30results about How to "Easy to install and use" patented technology

The invention discloses a self-locking and climbable cable trench cover plate, and relates to the technical field of power equipment. The self-locking and climbable cable trench cover plate consists of a cable trench, a cover plate, stand columns, a bracket and a ladder, wherein the cover plate is arranged on the cable trench; the cover plate is provided with the stand columns and the bracket; a rotary shaft is arranged in each stand column; a pulling wire is arranged on the rotary shaft; an opening is formed in the wall of each stand column; a fixed clamp is arranged on one side of the opening; the bracket is connected with the ladder; one end of the bracket is arranged on the cover plate; one end of the bracket is connected with the ladder; one end of the ladder is connected with the bracket; and the other end of the ladder is fixed at the bottom of the cable trench. The self-locking and climbable cable trench cover plate is high in practicability, quite simple to install and use, and capable of reducing tool carrying amount of an electric power staff, effectively isolating and warning around the cable trench when the electric power staff is in operation in the trench, and improving operating safety and convenience.

The invention discloses a ceiling air purifier for an education system. The ceiling air purifier comprises a frame body and is characterized in that a purification component and a control component are arranged in the frame body; two parallel fans are arranged on one side of the purification component, and the two fans are close to an air outlet; the purification component comprises a high-efficiency HEPA filter screen, an activated carbon module component and a 1DCATA foamed ceramic module component, which are arranged in order; a germicidal ultraviolet lamp is arranged on one side of the 1DCATA foamed ceramic module component. The ceiling air purifier satisfies the air purification of a teaching classroom, removes PM2.5, degrades organic matters such as formaldehyde, benzene, etc. and kills bacteria, thereby giving students a pollution-free learning environment with clean air in class, and greatly reducing cross infection caused by the air problem in a classroom. In addition, the ceiling air purifier is also convenient to install and use, avoids the potential safety hazard caused by conveniently touching the traditional table type air purifier, ensures the safety of teachers and students, and meets the installation of existing classrooms.

The invention discloses a tree digging device convenient to mount and use in a vehicle. The device comprises a vehicle-mounted lifting apparatus, an excavating apparatus and an auxiliary connecting apparatus; the vehicle-mounted lifting apparatus comprises a mounting base, a vehicle-mounted hydraulic apparatus and a vehicle-mounted support frame; the vehicle-mounted support frame is arranged at the upper end of the mounting base and rotatably connected with the mounting base, and the vehicle-mounted hydraulic apparatus is arranged between the mounting base and the vehicle-mounted support frame. According to the provided tree digging device convenient to mount and use in the vehicle, mounting and use in different vehicles are facilitated, a user only needs to control a plurality of hydraulic cylinders, then the whole tree digging process can be completed, and the operation is simple and convenient; through digging of the device, the size of a tree pit is fixed, the sealing structure of a digging claw provides convenience for the vehicle during long-distance transplantation, the shape of the digging claw provides conveniece for well and easily cutting roots of trees in soil through sawing, and the demand of digging the trees can be easily met.

The invention discloses a clean water composite exhaust valve, which comprises a cylindrical valve body. A valve cover is fixedly arranged at the upper end of the valve body, and is provided with an air outlet; a valve cap is fixedly arranged above the air outlet; the periphery of the valve cap is provided with a vent hole and a dustproof cover; the lower end of the vent hole is provided with an annular sealing gasket; a valve rod capable of moving up and down is arranged in the air outlet; a chock plug is fixedly arranged on the middle part of the valve rod; a stainless steel floating ball is arranged below the valve cover through a connecting rod and a guide rod; the bottom of the valve body is provided with an inflow port joint; the end part of the inflow port joint is provided with an internal thread and screwed with a filter plug; and a stainless steel filter screen is fixedly arranged on the middle part of the filter plug. The clean water composite exhaust valve has a simple structure, is convenient to install and use, prevents sundries outside the valve and sundries in the water in a pipeline from entering the valve body, blocks the motion of the floating ball or the normal venting work of the air outlet, and is widely applicable in pipelines of clean water and sewage.

The invention discloses an automatic production line of a solar sectional material. The automatic production line mainly comprises a charging bracket part, a charging conveying part, an adhesive tape pasting part, a blanking part, a bending part and a control cabinet body, wherein the charging bracket part and the charging conveying part are connected in parallel; the outlet of the charging bracket part is connected with the inlet of the adhesive tape pasting part; the outlet of the adhesive tape pasting part is connected with the inlet of the blanking part; the outlet of the blanking part isconnected with the inlet of the bending part; and the control cabinet body is connected with the whole production line by virtue of lines. By adopting the automatic production line, the problems of uneven products, high production cost, low production efficiency and low profit rate caused by excessive manual procedures in the current industry are solved. By adopting the mechanical automatic production line mode, the problem of staff redundancy is fundamentally solved, and machines with precise control are utilized to ensure the unification of the specification of produced products.

The invention discloses a roll-free variable-stiffness vibration damping bearing. The roll-free variable-stiffness vibration damping bearing comprises a lower basin, a rubber plate body, a liner plate body and a backing plate body, wherein the rubber plate body is arranged in at bottom of the inner side of the lower basin; the lower surface of the liner plate body is in contact connection with the upper surface of the rubber plate body; the upper surface of the liner plate body is in contact connection with the lower surface of the backing plate body. Grooves are respectively formed in the upper surface or / and the lower surface of the rubber plate body of the roll-free variable-stiffness vibration damping bearing disclosed by the invention, so that the grooves can provide space for the compression deformation of the rubber plate body; the area proportion of the different grooves is adjusted, the rubber plate body with different elastic properties can be obtained; the rubber plate body is relatively closed in the inner space by the lower basin of the roll-free variable-stiffness vibration damping bearing; the conditions that the rubber plate body is exposed in air and directly radiated the ultraviolet rays, and is directly eroded by poor weather conditions are avoided; the service life of the vibration damping bearing disclosed by the invention is prolonged.

The invention discloses a pedal. The pedal comprises a pedal main body, wherein the pedal main body comprises a cross plate and side plates arranged on the front side and the rear side of the cross plate; hooks are arranged at the left end and the right end of the cross plate; grooves adopting semicircular structures and penetrating the cross plate in the length direction are formed in the cross plate; and the side plates adopt concave structures. The pedal has a simple structure and is easy to implement; as the grooves adopting the semicircular structures and penetrating the cross plate in the length direction are formed in the cross plate and the side plates adopt concave structures, the inertia moment of section is greatly increased, and the bending resistance and the bearing capacity of the pedal are enhanced; as the pedal main body is formed by cold-bending of a steel plate, the material is greatly saved, and the weight of the pedal is reduced; the hooks arranged at the left and right ends of the cross plate ensure more convenient and rapid installation; and besides, as anti-skid convex holes are formed on the surface of the cross plate, not only is the material saved, but also an antiskid role is played and the pedal is safe and reliable.

The invention relates to a thread sleeve type mounting bracket for a balcony wall-mounted type solar water heater heat collection plate as well as a mounting method and application thereof. The mounting bracket comprises a supporting rod, a driving rod and a connection rod, wherein the tail end of the supporting rod is fixedly arranged on the outer side of a balcony wall; the front end of the supporting rod is hinged with a heat collection plate; the front end of the driving rod is hinged with the tail end of the connection rod; the front end of the connection rod is hinged with the heat collection plate. The mounting bracket can be used for adjusting the inclined angle of the heat collection plate according to the changes of different latitudes and sunlight perpendicular incidence angles of different seasons, so that the heat collection plate can receive solar heat to the greatest extent, and the heat absorption effect of the heat collection plate is greatly enhanced. Compared with a traditional fixed bracket, the mounting bracket has a more scientific and reasonable design, is convenient to mount and use and is low in production and manufacturing cost; electric driving control also can be realized, the function is obvious and the effect is remarkable; the thread sleeve type mounting bracket has good economic benefits and social benefits and is worthy of being popularized and applied.

The invention belongs to the field of cutting mechanical devices, and specifically discloses a cutter which comprises a cutter body, a first bracket and a second bracket, wherein a control box is arranged on the first bracket; a switch is arranged in the control box; the switch is in series connected with the cutter body; a paraffin plate is arranged between the first bracket and the second bracket; a cavity is formed in the second bracket; one end of the paraffin plate extends into the cavity; the other end of the paraffin plate is equipped with a metal sleeve; the metal sleeve is rotatably connected with a rotary cover; the rotary cover is rotatably connected with a hollow shaft sleeve; the hollow shaft sleeve is fixedly connected on the control box; a through hole is formed in the paraffin plate; the metal plate sleeve, the rotary cover and the hollow shaft sleeve penetrate through the through hole; an insulated wire is arranged in the through hole; one end of the insulated wire is fixedly connected on the second bracket; and the other end of the insulated wire is connected with the switch. According to the scheme adopted by the invention, the invention provides the cutter which has a safe function, and does not affect normal use of workpieces.

The invention relates to an automatic loading machine for pipes. The machine comprises an automatic feeding system and a material receiving system, wherein the automatic feeding system is provided with a steel structure bottom frame which is arranged on one side of a material inlet end of a pipe cutting machine; the bottom frame is coaxially connected with a swing frame through a bolt component; an adjustable bracket is provided with a screw and a nut and is connected with the swing frame through the screw and the nut; a blocking roller is a rotatable roller with four baffle plates; a synchronous execution mechanism consists of an electric push rod serving as a power source, the blocking roller and a steel wire rope; the material receiving system is divided into two parts, one part is that material receiving frames are arranged on trolleys of the pipe cutting machine, and the other part is that a group of material receiving trolleys is arranged at one end of a material inlet of the pipe cutting machine to be combined with the material receiving frames; the material receiving trolleys and the trolleys of the pipe cutting machine run along the same track and are respectively arranged at the two ends of a pipe to be processed; and adjusting discs capable of adjusting the height of the material receiving frames are arranged below the material receiving frames on two trolleys. The automatic loading machine for the pipes has the advantages of simple structure, reliable performance, simple and convenient operation and obvious effect.

The invention relates to a multifunctional light, and belongs to the field of lighting devices. The multifunctional light comprises a threaded joint (1), a housing (2), a switch (3), LED lights (4), a light core (5), a cover (6), a main circuit board (7), a storage battery (8), LED light boards (9) and an infrared receiver (10). The threaded joint (1) is arranged above the housing (2) provided with the switch (3). The switch (3) is connected with the main circuit board (7) in the housing (2) through a guide wire, and the main circuit board (7) is connected with the storage battery (8) and the light core (5) through guide wires respectively. The LED light boards (9) are all arranged in the light core (5). The top end and bottom end of the light core (5) are provided with a plurality of the LED lights (4), the infrared receiver (10) is arranged at the center at the bottom end of the light core (5), the light core (5) is located below the housing (2), and the cover (6) is arranged outside of the light core (5). The multifunctional light has both lighting and emergency functions, and has the advantages of simple structure, convenience in mounting and using, small size, light weight, low cost and the like.

The invention relates to a multifunctional twisting guide wheel which comprises a twisting guide wheel body and a guide. The guide is mounted on an outlet side of each of an eight-stand tandem mill and a ten-stand tandem mill, the twisting guide wheel body is mounted on the guide and comprises an upper guide wheel body and a lower guide wheel body, and a certain distance is reserved between the upper guide wheel body and the lower guide wheel body. The guide wheel is mounted on the guide on the outlet side of each of the eight-stand tandem mill and the ten-stand tandem mill to twist a section by 90 degrees, and the multifunctional twisting guide wheel is applicable to multiple passes, simple in structure and convenient to mount and use, fault due to mistaken mounting is avoided, and guide wheel storage amount is decreased.

The invention provides an internal pressurizing one-way telescopic flexible driver which comprises a fixed supporting end, a movable end, an inflating pipe nozzle, a sealing cavity and a fiber reinforced net. The fixed supporting end is of a circular ring structure and used for supporting or fixing the flexible driver; the movable end is of a circular ring structure corresponding to the fixed supporting end; a connecting hole connected with a driven structure is formed in the end; one end of the sealing cavity and one end of the fiber reinforced net are fixedly connected with one end face of the fixed supporting end annular structure; the other end of the sealing cavity and the other end of the fiber reinforced net are fixedly connected with one end face of the movable end annular structure; the connecting positions keep airtight and do not deform; and the inflating pipe nozzle is led out from the side wall of a circular ring at the fixed supporting end and extends into the sealing cavity so as to inflate and deflate the sealing cavity. The internal pressurizing one-way telescopic flexible driver provided by the invention is simple in structure, light in weight, convenient to install and use and large in driving stroke.

The invention discloses a high-efficiency durable-type stirrer. The high-efficiency durable-type stirrer comprises a stirring tank, wherein a mounting seat is arranged at the top end of the stirring tank; a charging opening is formed in the side wall of the upper end of the stirring tank; a discharging opening is formed in the bottom of the stirring tank; a first driving motor and a second driving motor which reversely rotate are symmetrically arranged on the mounting seat along the axis of the stirring tank; the output ends of the first driving motor and the second driving motor are in respective transmission connection with a first rotary shaft and a second rotary shaft which extend into the stirring tank; a plurality of stirring rods are distributed on each of the first rotary shaft and the second rotary shaft at equal intervals; the stirring rods on the first rotary shaft are staggered with the stirring rods on the second rotary shaft. The high-efficiency durable-type stirrer is simple and reasonable in structure and convenient to mount and use; materials can be quickly and fully stirred by virtue of a group of stirring rods staggered with one another, so that the crushing capacity for blocky materials is improved, the phenomenon of blocking is not easily caused, the using safety of the driving motors is guaranteed, and the stirring quality and the production and processing efficiency are improved.

The invention provides a device for cleaning ceramic plates. The device comprises a cleaning tank, a nitric acid preparation tank and a nitric acid cleaning liquid pump; the device is characterized in that the bottom of the cleaning tank is connected with an air pipe which is provided with a connector and connected with an air cabinet, the nitric acid preparation tank is connected with the nitric acid cleaning liquid pump, and the nitric acid cleaning liquid pump is connected with the cleaning tank. When the device is in use, ceramic plates to be soaked and cleaned are vertically arranged inside the cleaning tank by use of the connector on the air pipe, the nitric acid cleaning liquid pump is turned on to feed the nitric acid cleaning liquid into the cleaning tank, and then a valve on the air pipe is switched on so that air can be introduced into the ceramic plates to bubble; as a result, the ceramic plates are cleaned continuously under the actions of soaking in the nitric acid cleaning liquid and air bubbling. The device for cleaning the ceramic plates is simple in structure, low in manufacturing cost, convenient to mount and capable of solving the regeneration problem of the ceramic plates. The device for cleaning the ceramic plates is applicable to the field of cleaning ceramic filters.

The invention relates to a leisure chair surface processing and production process. The processing and production process comprises the following steps of S1, preparing materials: preparing textilenemesh cloth and a support; S2, performing edge heating, wherein the side edges of the textilene mesh cloth are turned over, the turned-over side edges are fixed to the surface of the textilene mesh cloth through heating and heat sealing, and a channel allowing the support to penetrate through is formed between the turned-over side edges and the surface of the textilene mesh cloth; and S3, performing mounting: penetrating the textilene mesh cloth into the channel through the support, and mounting the textilene mesh cloth on the support for fixing. Compared with the prior art, the production process is simplified, machining and production are facilitated, the production cost is reduced, meanwhile, the structure is stressed evenly, and the service life is long.

The invention discloses a graphite heat conduction high-powder flat plane light source encapsulation method. The method comprises the following steps that a reverse trapezoidal solid crystal reflecting cup reflecting cavity (2) is drilled or cut on an aluminum PCB (printed circuit board) (1); single or multiple LED (light emitting diode) chips (3) are transplanted into the reflecting cavity (2), a functional PCB circuit (4) is drawn around the reflecting cavity (2); an electrode lead wire (5) of the LED chip (3) is bonded onto the functional circuit (4) of the aluminum PCB (1), and the circuit is conducted; annular surrounding grids (6) are made on the periphery of the single or a plurality of LED reflecting cavities (2) through cutting or punching or through adopting other modes; forming silicon rubber (7) or YAG(yttrium aluminum garne)-containing fluorescent lamps or any powder capable of realizing the color change through being stimulated is uniformly coated in the surrounding grids; the ductility of the aluminum material is utilized for transplanting heat conduction graphite sheets (8) into the integral aluminum base plate; and the integral LED flat plane light source is formed. According to the method provided by the invention, the graphite is creatively utilized to be used as heat conduction materials, and the heat transmission capability is enhanced.

The invention provides an aluminum alloy in-opening window. An in-opening fan is arranged in an edge frame. The in-opening fan includes an in-opening fan frame, in-opening fan glass and an in-openingfan pressing line. The in-opening fan glass is of a three layers of glass structure. The edge frame and the in-opening fan frame are each of a divided structure. An edge frame heat insulation bridge and an in-opening fan frame insulation bridge are formed in the middle of the section of each of the edge frame and the in-opening fan frame through a heat insulating element in sequence correspondingly. The edge frame heat insulation bridge and the in-opening fan frame insulation bridge are located between inner glass and outer glass of the in-opening fan glass to form an isothermal layer. The outdoor side bottom edges of the in-opening fan frame and the edge frame are on the same horizontal plane. The edge frame includes an edge frame outdoor side aluminum profile, an edge frame heat insulation bridge and an edge frame indoor side aluminum profile. A frame corner connector is arranged in a cavity of the edge frame outdoor side aluminum profile. The two sides of the frame corner connectorare each provided with a guide plate which is matched with the frame corner connector. According to the aluminum alloy in-opening window, the heat insulation performance and the sealing performance ofthe aluminum alloy in-opening window are improved, materials are saved, the profiles are high in generality, and installing and using are convenient.

The invention discloses a repeater and an information transmission method thereof. The repeater comprises a terminal and a communication module mounted on the terminal, and the repeater further comprises a data conversion unit and a remote unit. The communication module which is originally mounted on the terminal is mounted on the remote unit, and the remote unit is provided with an antenna which can be connected with the communication module for wireless communication; the data conversion unit used for analog of the communication module is mounted on the terminal and connected with the terminal through a remote communication module interface; the data conversion unit is in wired connection with the remote unit. The repeater and the information transmission method thereof have the advantages that cross-standard, cross-manufacturer and cross-product compatibility is realized; the communication module can be mounted at positions excellent in signal service, communication distance between a terminal and the communication module is effectively increased, and communication effects are excellent; in addition, normality in operation can be realized only by getting power from the terminal instead of an external power source, so that convenience in mounting and utilization is achieved.

The invention discloses a heat-insulation window-gauze integrated double-outwards-opened window. The heat-insulation window-gauze integrated double-outwards-opened window comprises three parts of an upper fixed window body, a left-opened window body and a right-opened window body. The upper fixed window body is connected with the left-opened window body and the right-opened window body through transverse mullions, and the left-opened window body and the right-opened window body are connected through a first longitudinal mullion. The upper fixed window body comprises an upper left fixing windowmain body and an upper right fixing window main body, and the upper left fixing window main body and the upper right fixing window main body are connected through a second longitudinal mullion. According to the heat-insulation window-gauze integrated double-outwards-opened window, glass window outwards-opened and gauze window inwards-opened modes are adopted, meanwhile the mode of two double-opened sashes is adopted, thus the opening area of the window is large, the indoor area is saved, a gauze window is convenient to maintain, mounting and using are easy, and the service life is long; and the casement window further comprises a window handle, a traditional window-gauze integrated casement window is provided with two handles, the heat-insulation window-gauze integrated double-outwards-opened window is only provided with one handle, one handle simultaneously controls the two sashes to enable the two sashes to simultaneously opened outwards, and thus the heat-insulation window-gauze integrated double-out-opened window has the advantages that using is easy and convenient, the space is saved, and the cost is low.

The invention provides a driven disc for an automobile variable-displacement compressor. The driven disc comprises a driven disc body, an installation part on one side of the driven disc body and a withstanding part on the other side of the driven disc body, wherein an installation through hole is formed in the driven disc body, the installation part and the withstanding part protrude the upper end face of the driven disc body, a boss is arranged on the inner wall of the installation through hole, and an outer thread is arranged on the surface of the driven disc body in the circumferential direction. The driven disc sleeves a transmission shaft through the installation through hole, the installation part is used for being connected with a driving disc, a spring is arranged between the driving disc and the driven disc for the automobile variable-displacement compressor, and one end of the spring is blocked by a boss, so that the spring is limited. The driven disc for the automobile variable-displacement compressor is simple in structure and convenient to install and use.

The invention discloses an automobile tail door lock catch structure. The automobile tail door lock catch structure comprises a main plate, a mounting plate is fixedly mounted on one side of the surface of the main plate, a pressure-resistant box is fixedly mounted on one side of the surface of the mounting plate, a lock catch assembly is arranged on the surface of the pressure-resistant box, and an anti-impact assembly is arranged at the bottom of the lock catch assembly. Movable mounting assemblies are arranged on the two sides of the pressure-resistant box, and a side plate is movably arranged on one side of the main plate. In the daily use process, firstly, an anti-impact spring is installed at the bottom of a lock catch, so that the impact force is buffered when the lock catch and a lock hook are hooked and collided, meanwhile, a rebound assembly is fixedly installed at the bottom of the main plate, the main plate is prevented from being collided and damaged when the lock catch is hooked, the main plate can slide along with a sliding plate on one side when being collided, the main plate can be reset through the rebound assembly at the bottom, and deformation and damage caused when the lock catch is hooked with the lock hook are avoided.

The present invention relates to an open deluge sprinkler. It includes sprinkler body and joint, the sprinkler body and joint are screw-connected, between the sprinkler body and joint also can be set a retaining pin, the internal cavity of said sprinkler body can be separated into two layers by means of joint screw-connected with it, the spherical external surface of the sprinkler body is uniformly equipped with two rings of spraying holes whose position is correspondent to the position of upper and lower two layers of sprinkler body, and every spraying hole can make an included angle less than 90 deg. with axial direction. Said invention can be used in automatic fire-sprinkling system.

The invention discloses a simple feeding device and a construction method thereof. An outer side template of the device is arranged above a pouring opening of a to-be-poured structure, a plurality of notches capable of exposing the pouring opening are formed in the outer side template, a first feeding plate and a second feeding plate are installed on the to-be-poured structure corresponding to the two ends of the notches, a third feeding plate is connected with the first feeding plate and the second feeding plate, the first feeding plate, the second feeding plate and the third feeding plate form a funnel shape with the to-be-poured structure, and the bottom of the funnel shape is opened at the pouring opening exposed by the notches in the outer side template. The method comprises the steps that S1, the outer side template, the first feeding plate, the second feeding plate and the third feeding plate are sequentially installed; S2, concrete is added from the upper end of the funnel shape formed by the first feeding plate, the second feeding plate and the third feeding plate with the to-be-poured structure; and S3, the concrete enters the to-be-poured structure along the pouring opening in the bottom of the funnel shape. The simple feeding device and the construction method thereof are convenient and efficient in pouring.

The multifunctional high-voltage test wire hanging device comprises an insulating rod and a wire clamp, the wire clamp comprises a clamping support, and the clamping support is provided with a movable clamping jaw which is matched with the clamping support to clamp or loosen a tested product; the movable clamping jaw is connected with the power transmission part and is driven by the power transmission part to act; and a controller and a battery are arranged on the insulating rod. The working efficiency of testers is improved, the safety coefficient is improved, and the test efficiency is improved. And the voltage withstanding time is greatly shortened, so that the power transmission time, the project progress and the maintenance time are accelerated. The device is light, simple, easy to install and use and convenient to popularize and use, the movable clamping jaw is driven by the motor to quickly act, hanging wires or tested products of various sizes can be firmly clamped, and the application range is wide. The device can adapt to a complex test environment, is flexible, and is generally convenient to carry, disassemble and assemble.

The invention provides a quick wing surface unfolding mechanism of a folding wing unmanned aerial vehicle, which comprises a base, a gas actuating cylinder, a rack and a gear, and a guide groove is formed in the base in the axial direction of an aircraft; the actuating cylinder is mounted on the base, and the output end of the actuating cylinder is fixedly connected with the rack to push the rack to move along the guide groove; rotating shaft seats are symmetrically arranged on the two sides of the rack, the gear is connected to the rotating shaft seats in a sleeving mode and axially limits a rotating shaft entering the gear through a pressing beam, an arc-shaped guide groove is formed in the bottom of the gear, and a pin hole is formed in the end of the guide groove; the gears are fixedly connected with the wing surfaces and meshed with the racks, and the racks move along the guide grooves under the thrust action of the actuator cylinder to push the wing surfaces on the two sides to be unfolded synchronously; and a spring pin is arranged on the rotating shaft seat, is ejected into the arc-shaped guide groove of the gear under the action of a spring, and extends into the pin hole of the gear to lock the gear after the wing surface is unfolded in place. The mass and the size of an existing folding mechanism can be reduced, the structure is simplified, cost is reduced, and operation is easy.

The invention relates to a plum tube, and in particular provides the plum tube. The plum tube comprises a number of sub-tubes made of a PVC material. A number of sub-tubes are connected end to end toform an accommodation space with a regular hexagon with an opening in the middle. A lubricating layer is sprayed on the inner edges of the sub-tubes and the accommodation space. Due to the fact that the plum tube is made of the PVC material, the plum tube has better resistance to deformation. The plum tube is not easy to deform and soften under high temperature weather, and is convenient for construction. At the same time, the accommodation space is set as a regular hexagon, and the lubricating layer is sprayed on the inner wall edges of the sub-tubes and the accommodation space. When threading is carried out, dead angles are prevented. The threading rate is improved.

The invention discloses an electronic igniter of gas equipment. The electronic igniter comprises a first switch, a second switch, a third switch, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a discharge tube, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first NAND gate, a second NAND gate, a third NAND gate, a fourth NAND gate, a relay and a thyristor. The electronic igniter is simple in structure and circuit and convenient to mount and use, has the characteristics of high ignition energy, low manufacturing cost and the like, can be used for starting ignition during fuel oil combustion or gas combustion in the industrial field, and is a product worthy of popularization.

A solar carbon dioxide energy accumulator for carbon dioxide cyclic power generation mainly comprises a light gathering CO2 energy storage device and a lens energy gathering device. An outlet of the light gathering CO2 energy storage device communicates with an inlet of the lens energy gathering device through a pipeline. The light gathering CO2 energy storage device mainly comprises a support I, an intermediate temperature energy storage mechanism and a reflection mechanism. The reflection mechanism is arranged on the periphery of the support I and gathers sunlight energy to the light gathering face of the intermediate temperature energy storage mechanism. The lens energy gathering device mainly comprises a support III, a high-temperature energy storage mechanism and a convex lens mechanism. The convex lens mechanism is arranged on the periphery of the support III, and the convex lens mechanism gathers the sunlight energy to the light gathering face of the high-temperature energy storage mechanism. According to the solar carbon dioxide energy accumulator, solar energy changing along with longitude and latitude natural terrain and season time in vast countries is conveniently utilized as energy, the occupied land is small, the solar carbon dioxide energy accumulator can be conveniently arranged along with landform changes, investment is small, and the high-temperature energy condition needed for supercritical CO2 cyclic power generation can be met.

A VLF ground wave telephone equipment in VLF band (20-300 KHz) is composed of user extensions, switch, ground wave telephone power amplifier-transmitter, ground coupled transmitting network and power supply. Said user extensions consist of emitter, receiver and dialing circuit. Said ground coupled transmitting network is composed of feed back line, impedance converter, transmitting antennas, high-voltage (10KV) power transmission line, and grounding electrode networks. Its advantages are developing new frequency resource, high anti-interference power, stable and reliable signals, no blind region in transmission, low cost and high security and compatibility.