59results about How to "Easy to maintain" patented technology

A self-steering axle suspension system utilizing a rotary damper coaxially aligned with and acting directly about the king pin centerline on one side of the vehicle is disclosed. When used as such, the rotary damper constitutes a rotary stabilizer. The rotary stabilizer is used to control the steerability of the self-steering axle suspension system and has a self-centering axle mechanism incorporated therein.

The invention discloses a deep well pump fixing frame in the technical field of mining equipment. The deep well pump fixing frame comprises a base, five limiting rings and a supporting device; the five limiting rings are transversely welded to the top of the base at equal intervals; and the supporting device is welded to the top of the base, and the supporting device is located on the outer sidesof the five limiting rings. The deep well pump fixing frame is simple in structure, strong in practicability, small in occupied space convenient to place and take out; the deep well pump fixing framecan be placed at the appropriate position anytime and anywhere, and maintenance and replacement are facilitated; two longitudinal plates and a transverse plate are welded into the H-shaped base, the five limiting rings are transversely welded on the transverse plate at equal intervals, the bottom of a deep well pump is placed through the limiting rings, and it can be ensured that the deep well pump is stable and free of movement; fixed rings and movable rings are used for fixing the outer wall of the deep water pump and are connected through shaft pins, free opening and clamping can be achieved, and the maintained or to-be-repaired deep well pump can be placed and taken out of the fixing frame at any time.

The invention discloses a fiber grating wavelength demodulating device based on a saturable absorption fiber. The device comprises a pumping source, a gain fiber, the saturable absorption fiber, a circulator, an annular cavity or linear cavity fiber laser formed by a fiber grating to be measured and a photoelectric detection system used for measuring the repetition frequency of lasers. By measuring the repetition frequency of the lasers, wavelength changes of the fiber grating to be measured are obtained through calculation, and wavelength demodulation is achieved. The fiber grating wavelength demodulating device based on the saturable absorption fiber avoids using spectral analysis equipment and thus lowers the wavelength demodulation cost. Meanwhile, an all-fiber demodulating system is obtained, the demodulating system is made to be small in size, easy to maintain and easy and convenient to use.

The embodiment of the invention provides an assembly method and a mobile terminal, and relates to the technical field of communication. The assembly method is applied to the mobile terminal, and the mobile terminal includes an upper mainboard cover, a battery cover, an antenna, a socket and circuit boards, wherein the circuit boards includes a mainboard and a flexible circuit board; the assembly method includes the steps that the socket is fixed to a deputy circuit board of the flexible circuit board, the deputy circuit board of the flexible circuit board is packed into the battery cover, and therefore the positions of insertion openings of the socket correspond to the positions of insertion holes of the battery cover; the mainboard and the antenna are fixed to the upper mainboard cover; the mainboard and a main circuit board of the flexible circuit board are connected in a buckled mode, so that the battery cover and the upper mainboard upper form a shell of the mobile terminal. By the adoption of the assembly method and the mobile terminal, the problems can be solved that the assembly of the mobile terminal is complex and tedious and the device protection intensity is low.

The invention discloses an ice melting component, an ice melting device and an ice melting car for track beams. The ice melting component comprises: a fixing component and a heat generating component,wherein the fixing component comprises two fixing seats which are arranged in the width direction of a track beam at intervals; the heat generating component comprises a plurality of heat generatingtubes which are arranged at intervals; each heat generating tube is connected between the two fixing seats; and the heat generating tubes are infrared carbon fiber heat generating tubes. According tothe ice melting component for the track beams, which is disclosed by the embodiment of the invention, the heat generating tubes are fixed by the two fixing seats and are arranged along the extension direction of the track beam at intervals and when an ice melting operation is carried out on the track beam by the ice melting car, the ice melting component can effectively cover the track beam, so that the heat generated by the heat generating tubes can all act on the track beam and the energy utilization rate and the work efficiency can be improved; and meanwhile, compared with a technical solution that the heat generating tubes are pre-embedded in the track beam in the related art, the ice melting component has the advantages that the maintenance is more convenient and the practicability isstrong.

The invention belongs to the field of metal extrusion equipment, and in particular relates to an external mechanical fixed needle extrusion device and method, including a perforated piston rod, a limit sleeve, a main cylinder, a perforated cylinder, a perforated needle, an aluminum ingot and an extrusion die, the main The cylinder is fixed on the extruder frame, the main cylinder is equipped with a perforated cylinder, and a limit sleeve is installed at one end of the main cylinder, and an aluminum ingot and an extrusion die are installed inside the perforated cylinder along its axial direction; one end of the perforated piston rod is fixed The piercing needle is connected, and one end of the piercing piston rod installed with the piercing needle passes through the limit sleeve, the main cylinder and the piercing cylinder in sequence, and the other end of the piercing piston rod is set with a gear assembly. This external mechanical fixed needle extrusion method and device, It can be used for both small and medium-sized presses and large presses. The mechanical limit position of the perforating needle can be adjusted in real time according to the process needs. Since the perforating system is built-in and the mechanical positioning part is external, the length of the extruder frame is reduced. The rigidity of the frame is improved, the maintenance is convenient, and the equipment cost is also reduced.

The invention discloses a horizontal type wave force generating device which comprises a generating device, a driving device for driving the generating device to generate electricity and a fluctuation device for controlling the driving device to move. The fluctuation device comprises a counter weight base, at least one slideway parallel to the counter weight base and wave-collecting plates which are coaxially arranged on the slideways and can perform reciprocated sliding along a direction parallel to the slideways. The driving device comprises a hydraulic motor, a hydraulic cylinder and a piston rod, wherein the hydraulic cylinder is connected with the hydraulic motor through a hydraulic pipe. One end of the piston rod is connected with the fluctuation device, and the other end of the piston rod is inserted into the hydraulic cylinder and can be driven by the fluctuation device to reciprocate along the direction parallel to the slideways. The horizontal type wave force generating device is simple and novel in structure, difficult to damage, convenient to maintain and high in energy conversion rate and generating efficiency. For a tidal power generation technology, large-area coast reclamation damming is not needed, and the horizontal type wave force generating device is flexible in achievement mode and favorable for reduction of ocean power generation cost.

The invention provides a multi-channel air pressure acquisition device. The multi-channel air pressure acquisition device comprises an air path device and an acquisition device. The air path device comprises a device body, air path joints and sealing devices. The acquisition device comprises acquisition circuit boards and a control circuit board. Pressure sensitive devices are arranged on the acquisition circuit boards and a sensor chip is arranged the control circuit board. Air paths connecting the air path joints and the pressure sensitive devices, and air paths connecting the air path joints and the sensor chip are arranged in the device body. The sealing devices are arranged at inlets and outlets of the air paths. According to the invention, multiple independent pressure sensors are integrated into the circuit board, air pressure acquisition devices have independent air paths and all the air paths are integrated into the device body, so the mechanism of the multi-channel air pressure acquisition device is greatly simplified; hardware resources are saved; the size, the weight and the manufacturing cost of the device are reduced; and the multi-channel air pressure acquisition device is easy to disassemble and maintain and suitable for air pressure measurement in various kinds of environments.

The invention relates to a mechanical hand which comprises an air cylinder, a rotation arm, a motor, a grip installation plate and a grip, wherein the air cylinder is disposed on the top part of the rotation arm, the top end of a push-pull rod is fixed on a push-pull rod bearing base, the push-pull rod passes through inside a rotary output shaft, the grip is installed on the bottom end of the push-pull rod, the push-pull rod moves up and down along with up-down motions of a piston rod in the air cylinder, and thus the grip formed through connecting rod hinging is driven to realize actions of grasping and strutting; and meanwhile, a driven wheel is fixed on the rotary output shaft, the driven wheel is driven by a drive wheel in order to drive the rotary output shaft to rotate at 360 DEG around the axis of the rotary output shaft, the grip installation plate is fixed on the bottom end of the rotary output shaft at this time and the grip is installed on the grip installation plate, so that motion states of the grip installation plate and the grip are kept consistent with the motion states of the rotary output shaft. The invention also relates to a mechanical device with the mechanical hand.

The invention discloses a stably-fixed municipal administration street lamp which comprises a lamp pole. A fixing device is arranged at the lower end of the lamp pole, a lifting cavity is arranged inside the lamp pole, a vertical plate is arranged in the middle of the interior of the lifting cavity, a sliding rail is arranged on the right side of the vertical plate, a lifting base is arranged on the sliding rail, a steel wire rope is arranged on the upper side of the lifting base, a plurality of rotating wheels are arranged at the upper end of the interior of the lifting cavity, a rope reelingdevice is arranged on the left side of the vertical plate, the steel wire rope is reeled around the rotating wheels to be connected with the rope reeling device, a supporting rod is arranged on the right side of the lifting base, a lighting structure is arranged at the right end of the supporting rod and comprises a shell, an installing plate is arranged inside the shell, a lamp base is arrangedon the lower side of the installing plate, a plurality of LED lamps are arranged on the lower side of the lamp base, a plurality of heat conduction rods connected with the lamp base are arranged on the installing plate, the upper side of the installing plate is provided with a radiating plate connected with the heat conduction rods, and a plurality of insect repellent medical materials are placedon the radiating plate. The stably-fixed municipal administration street lamp is simple in structure, convenient to use and maintain and stable in fixation, and can dispel mosquitoes.

The invention discloses a tire carrying and destacking-stacking system, which comprises a support mechanism, a carrying mechanism and a power device, wherein the support mechanism comprises a first longitudinal beam and a second longitudinal beam which are arranged in parallel, and a support vertical column for supporting the first longitudinal beam and the second longitudinal beam; the carrying mechanism comprises a movable transverse beam and a carrying manipulator; the movable transverse beam stretches across the first longitudinal beam the second longitudinal beam, and is in slide fit with the first longitudinal beam and the second longitudinal beam along the longitudinal directions of the two longitudinal beams; the carrying manipulator is arranged on the movable transverse beam, and is in slide fit with the movable transverse beam along a transverse direction; the carrying manipulator comprises a grasping part used for grasping a tire, and a lifting assembly for controlling the grasping part to move vertically; the power device comprises a longitudinal power device used for driving the movable transverse beam to move along a longitudinal direction, and a transverse power device used for driving the carrying manipulator to move along a transverse direction. According to the tire carrying and destacking-stacking system, full automation of tire carrying and destacking-stacking is realized.

The invention discloses a lifting positioning device for new energy automobile maintenance, and belongs to the field of automobile maintenance, the lifting positioning device comprises two travelling frames arranged in parallel, the two travelling frames are jointly provided with two guide rails, the two guide rails are connected and fixed through a connecting frame, and the guide rails are provided with first adjusting mechanisms; the travelling cranes are slidably mounted on the guide rails through the first adjusting mechanisms, two hydraulic rods are symmetrically mounted in the middle of the travelling frames, second adjusting mechanisms are arranged in the travelling frames, the hydraulic rods are mounted on the second adjusting mechanisms, and storage grooves corresponding to the hydraulic rods are formed in the middles of the travelling frames; and the hydraulic rods are stored in the travelling frames through the storage grooves. By adjusting the distance between the travelling frames and the positions of the hydraulic rods, lifting of different automobile types can be achieved, after lifting, automobiles are placed stably, safety is high, and it is convenient for workers to carry out maintenance.

A method for plugging man well pipe hole of underground pipe includes setting blocking screen in pipe hole of man well, setting more than one irregular level ring buckles on blocking screen, setting a pulling handle ring at plane vertical to plane of level ring buckle and connecting said handle ring with said ring buckle, placing level ring buckle in man well pipe hole and placing partial pulling handle ring at external man well pipe hole, packing leaking stoppage cement between external end surface of man well pipe hole and level ring buckle.

The invention discloses a crossbeam for an automobile dashboard, which comprises a crossbeam body. A left end plate and a right end plate are fixed to two ends of the crossbeam body respectively, a middle support is fixed to the middle of the crossbeam body, a lower middle support is connected to the end of the middle support, a lower right support is connected to the end of the right end plate, and the lower right support is connected with the lower middle support through a storage box support. A pipe column mounting support is further fixed onto the crossbeam body, and a meter mounting support is connected to one end of the pipe column mounting support. The crossbeam for the automobile dashboard is simple in structure, small in occupied space, firm and reliable in connection of parts, convenient in mounting and demounting, versatile and convenient in maintenance, and various devices can be mounted on the crossbeam.

The invention relates to the technical field of monitoring accessory devices, in particular to safe Internet of Things monitoring equipment. According to the equipment, a structure is simple, height of a camera is easy to adjust, a shooting angle of the camera is convenient to adjust, and use is more convenient. The safe Internet of Things monitoring equipment comprises a base, wherein four fixing holes are formed in edge areas of the base in a circumferential array mode, a cylindrical positioning column is fixed to the base, and a sleeve is coaxially and rotationally installed on the positioning column; and a first door-shaped plate is fixed to the top end of the sleeve, a first rotating shaft is rotationally installed on the door-shaped plate, and a second rotating shaft is fixed to the door-shaped plate. The equipment further comprises a second door-shaped plate, a first driving rod and a second driving rod, wherein a third rotating shaft and a fourth rotating shaft are fixedly installed on the second door-shaped plate, two ends of the first driving rod are rotationally connected with the second rotating shaft and the fourth rotating shaft respectively, one end of the second driving rod is fixedly connected with the first rotating shaft, and the other end of the second driving rod is rotationally connected with the third rotating shaft; and a swing arm is fixed to one end of the first rotating shaft, and a driving shaft is fixed to the other end of the swing arm.

The invention discloses an LED strip assembly for generating an extra wide beam light of greater than 180 degrees, comprising one linear support structure (typically of aluminum material), and at least two LED arrays. In addition, the support structure has an upper part, a lower part and two grooves in between. The said LED arrays are arranged on the upper part; the lower part is arc shaped and of 1 PI radians or less, having fins to dissipate heat to ambient environment.

A hydroforming machine characterized by a die 2 having an opening on the upper surface and a fluid tank 2a filled with fluid, a holder 3 being able to hold a periphery part between the die 2 and itself, a punch 4 being movable in a direction into or out for the fluid tank 2a, and a pressure controller 5 controlling the fluid pressure in the fluid tank 2a according to the position of the punch 4.

The invention discloses an FFT-based ionospheric scattered signal level test device, and relates to a digital signal processing device for high-sensitivity level testing and ionospheric signal receiving level data analysis in the communication field. The FFT-based ionospheric scatter signal level test device is composed of a GPS synchronous timer, a monitoring and control module, a signal transmitting module, a signal receiving module, an FFT-based signal detection module, a receiving signal data analysis module, a test report generation module, a data storage and playback module, a power supply and other components. An FFT spectrum analysis method is used to correct a received frequency value to obtain highly-purified narrow-band signal energy, the received frequency deviation caused by system frequency deviation and channel Doppler is eliminated, the performance loss caused by increasing a detection window is made up, and the purpose of high-sensitivity detection of ionospheric scattered signals is achieved. The FFT-based ionospheric scattered signal level test device provided by the invention further has the advantages of being simple in circuit structure, high in integration degree, stable and reliable in performance, good in transportability, low in cost and the like, and is particularly suitable for an ionospheric channel level test system.

The invention provides a fan component, an air conditioner and an assembly method of the air conditioner. The fan component comprises a motor, a motor mounting plate, a motor bracket and a fan blade, wherein the motor is provided with an output shaft; the motor mounting plate has a mounting structure matched with the motor; a first mounting through hole is formed in the motor bracket; one end of the output shaft penetrates through the first mounting through hole; the motor bracket is arranged between the motor and the motor mounting plate so as to tightly press the motor bracket on the motor mounting plate through the motor; and the fan blade is connected with the output shaft in a driving manner and arranged on the peripheries of the assembled motor bracket and the assembled motor in a sleeving manner. The fan component can solve the problem in the prior art about lower assembly efficiency of the air conditioner.

The present invention relates to a blind type curtain, and more specifically to a blind type curtain, obtained by forming several blind unit pieces formed on rear surface of the textile curtain at regular interval, such that the functions such as light beam regulation, sight-blocking, soundproofing, anti-cold, and anti-rat can be performed, and the function such as interior can be simultaneously performed, by which these functions are further magnified, of which the manufacture and handling is easy, used as a combined use of indoor and outdoor, and which provides no concern about noise and breakage. That is, a membrane shaped blind unit piece 2 is prepared by forming several blind unit pieces protrusively formed in a row direction at regular interval, preparing a connecting yarn on rear side of the blind unit piece, weaving the upper and lower end of the connecting yarn with the upper and lower end of a space of rear side of the blind unit piece to maintain the protrusion of the unit piece, and folding the lower end of the blind unit piece 2 forcibly.

The invention discloses a multi-system power source energy-saving combined air conditioner. The combined air conditioner comprises a compressor, a condenser, a liquid accumulator, a dry filter, an expansion valve, an evaporator, an overrun clutch, an alternating-current motor and an engine, wherein the compressor, the condenser, the liquid accumulator, the dry filter, the expansion valve and the evaporator are sequentially connected through a pipeline to form a refrigeration loop, and the overrun clutch is fixedly connected with an output shaft of the engine and is in transmission connection with the alternating-current motor and a clutch of the compressor. The combined air conditioner is simple in structure, convenient to use and maintain, low in manufacturing cost, convenient to maintain and high in reliability, and intelligent operation control over direct current supply/engine power take-off/alternating current supply of a power source of the air conditioner can be achieved.

The invention discloses an efficient hydraulic water pump. The efficient hydraulic water pump comprises a triangle support frame, a hydraulic motor and the water pump, takes a whole shape of a cylindrical boss with bigger upper part and smaller lower part, and is characterized in that the triangle support frame comprises a Samsung platform plate, supporting rods and pressure bearing plates; the hydraulic motor is mounted in the middle of the Samsung platform plate in an upside-down manner; two hydraulic pipes of a high-pressure oil line and a low-pressure oil line are arranged at the upper part of the hydraulic motor and connected to a hydraulic device; the lower part of the hydraulic motor is connected to an output shaft with an external spline; a water pump casing is arranged at the lower flange of the hydraulic motor; a pump body cover is arranged on a lower part boss of the water pump casing; an annular groove is formed in a center hole of the pump body cover by machining; a bearing is mounted in a hole below the annular groove; a water inlet pipe is mounted in a water inlet hole on the left side of the pump body cover; and an eccentric filter is sleeved with the lower half section of the water inlet pipe in a sliding manner. The efficient hydraulic water pump has the advantages of simple structure, easiness in manufacture, low cost, convenience in maintenance, high pumping efficiency, strong universality, safety, reliability and small labor intensity.

The invention relates to a power box structure and a lamp, in particular to a rotary power box structure and a lamp which can be quickly and fixedly connected and electrically connected and an electric connecting method for the rotary power box structure and the lamp. The rotary power box structure comprises a shell and a driving power board arranged in the shell, wherein the shell comprises a bottom box and an upper cover which is fixedly connected with the bottom box; a connecting groove is formed in the bottom box; and a conductive plate which is electrically connected with the driving power board is arranged in the connecting groove. The connecting groove is formed in the bottom box of the shell, the conductive plate is arranged in the connecting groove, so that an electric connecting surface and a fixed connecting surface between a driving power supply part and a light emitting assembly of the lamp are superposed, fixed connection and electric connection between the driving power supply part and the light emitting assembly are realized in a rotary fastening mode, and the lamp is mounted or dismounted quite conveniently and quickly.

The invention relates to a seal structure for sleeve connection of a pod body and an antenna housing of an onboard electronic pod. The seal structure comprises an onboard electronic pod antenna housing and an onboard electronic pod body end frame and is characterized in that an opening frame is arranged at the opening end of the housing body of the onboard electronic pod antenna housing, an annular groove is formed in the outer side of the embedding section where the opening frame is connected with the housing body, and the annular groove is bonded to the housing body through epoxy resin. An annular boss is arranged on the inner side of the opening frame, an installation groove is formed in the end face of the annular boss, and an O-shaped sealing ring is bonded to the inside of the installation groove. An annular boss is arranged on the inner side of a port of the onboard electronic pod body end frame, and the end face of the annular boss and the outer end face of the pod body end frame are coplanar. The pod body end frame is sleeved in the opening frame, and the end face of the annular boss and the annular boss end face of the pod body end frame are bonded by means of screw fastening. The seal structure for sleeve connection of the pod body and the antenna housing of the onboard electronic pod can be applied to the fields of military and civil products which are free of flange connection in appearance, can only be in sleeve connection and are good in sealing and waterproof effects.

The invention discloses a submersible water impeller for sewage stirring. The submersible water impeller for sewage stirring comprises a support column, a first motor and a support rod; one end of the support rod is rotatably connected with the support column, the support rod is provided with N impelling units, each impelling unit comprises a second motor and first blades, the first motor is in transmission connection with the support rod, and the second motors are in transmission connection with the first blades. According to the submersible water impeller for sewage stirring, an area where sedimentation is serious can be flexibly selected to be stirred according to the sewage sedimentation condition, and therefore the stirring effect is improved; maintenance is convenient, selection can be performed according to the actual condition of sewage, and therefore the flexibility is good; the overall device is simple in structure and convenient to use.

The invention provides a controllable color-changing window, which comprises a window frame. Outer-layer glass is fixed to the position, close to the outdoor side, in the window frame, and a sliding inner frame is arranged at the position, close to the indoor side, in the window frame and can move in the normal direction of the outer-layer glass under the external force effect; inner-layer glass close to the outer-layer glass and photochromic glass close to the indoor side are fixed into the sliding inner frame; ultraviolet-proof films with interstitial areas being evenly distributed on the surfaces are manufactured on the outer-layer glass and the inner-layer glass correspondingly, and the surface interstitial areas of the ultraviolet-proof films on the outer-layer glass and the inner-layer glass are staggered mutually, so that after the outer-layer glass and the inner-layer glass are attached, the interstitial areas on either of the ultraviolet-proof films are covered with non-interstitial areas on the other ultraviolet-proof film; when the sliding inner frame slides to the limit towards the outer-layer glass, the inner-layer glass and the outer-layer glass are attached; and whenthe sliding inner frame slides to the limited position towards the indoor side, the outer-layer glass and the inner-layer glass are completely separated. The controllable color-changing window is lowin cost and easy to maintain while having a controllable color-changing function.

The invention discloses a rocket and antiaircraft gun operation control and safety monitoring system and an operation monitoring method. The system comprises a plurality of operation point acquisition and control units 1 and an artificially-influenced weather operation central management platform, namely an upper computer 2, wherein data is transmitted between the upper computer 2 and the operation point acquisition and control units 1 through mobile communication and the Internet. The operation monitoring method comprises the following steps of: controlling the launching of a rocket or an antiaircraft gun; automatically acquiring operation information such as a launching pitch angle, a launching azimuth angle, rocket or antiaircraft gun launching information, longitude and latitude coordinates of operation points, operation time, operation ammunition using amount, operation channel numbers, ignition circuit resistance and the like; and uploading the operation information to a management center to monitor operation safety in a unified mode. By the system and the method, the problem of inaccurate information caused by manually recording and transmitting the operation information through personnel in the prior art is solved, and an effective tool is provided for a manager to accurately and timely master the information and scientifically perform artificially-influenced weather command and management.

The invention discloses a push rod device for preparing a quartz glass preform rod by using a sintered loose body. The push rod device comprises a push rod main body, a fixed body and a connecting head, wherein a water inlet passage and a water outlet passage are arranged on the push rod main body, and the water inlet passage is isolated from the water outlet passage; a water inlet and a water outlet are formed in the fixed body, the water inlet is communicated with the water inlet passage, and the water outlet is communicated with the water outlet passage; the push rod main body is rotatably connected with the fixed body; the interior of the lower part of the push rod main body has a cavity structure which is separated into two semi-cylindrical spaces by a clapboard in the same direction as the axial direction of the push rod main body, the lower parts of the two semi-cylindrical spaces are communicated with each other, and the upper parts of the two semi-cylindrical spaces are respectively communicated with the water inlet passage and the water outlet passage; and the connecting head for connecting the sintered loose body is arranged at the lower end of the push rod main body. The push rod device disclosed by the invention is low in processing difficulty, high in processing precision and low in damage rate, overcomes the defect of high maintenance cost of a conventional quartz glass push rod, and improves the reliability and economical efficiency of a sintered loose body device.

The invention discloses a fully-automatic horizontal-type hot-air boiler, which is characterized in that: a fireproofing boiler wall at the front side is provided with a cold air inlet and an automatic coal feeding hole, wherein the cold air inlet is arranged at the upper part of the automatic coal feeding hole; an automatic chain fire grate is arranged in the boiler body at the lower part of the automatic coal feeding hole; a fireproofing boiler wall at the rear side is provided with a hot-air header and outlet and a blast nozzle; a slag outlet is arranged at the bottom of the boiler body at the tail end of the automatic chain fire grate; an upper boiler arch is arranged in the boiler body; the boiler body is divided into a combustion region at the lower part and a cold air exchange region at the upper part by the upper boiler arch; the combustion region is communicated with the cold air heat exchange region through a smoke inlet of a heat exchange tank; a rear arch is arranged between the upper boiler arch and the automatic chain fire grate; 3-7 smoke boxes which are communicated are arranged in the cold air heat exchange region; smoke box clapboards which are staggered up and down are arranged among the smoke boxes; a heat transfer pipe and a smoke box channel are arranged in each smoke box; the fireproofing boiler wall at the top of the smoke box at the tail end is provided with a smoke outlet; and the fireproofing boiler wall on the lateral wall of each smoke box is provided with an ash-removing inspection hole. The fully-automatic horizontal-type hot-air boiler disclosed by the invention has the advantages of high heat efficiency and convenience for maintenance.

The invention discloses a flue gas heat recovery device for chemical production. The flue gas heat recovery device comprises a box body, wherein a water inlet pipe and a water outlet pipe are welded on the outer side wall of the box body correspondingly, the water inlet pipe and the water outlet pipe are located on the two sides of the box body correspondingly, the water inlet pipe is located above the water outlet pipe, a smoke outlet pipe is arranged at the top end of the box body, a smoke inlet pipe is arranged at the bottom end of the box body, an inner cavity of the box body is provided with a flue gas waste heat collecting device, the flue gas waste heat collecting device comprises heat collecting boxes, heat collecting pipe sets and smoke guiding pipes, wherein the adjacent heat collecting boxes are connected through the smoke guiding pipes, the heat collecting pipe sets are arranged in inner cavities of the heat collecting boxes, the smoke guiding pipes arranged on one sides ofthe heat collecting boxes are connected with the smoke inlet pipe, one sides, away from the smoke inlet pipe, of the heat collecting boxes are connected with the smoke outlet pipe through the smoke guiding pipes. According to the flue gas heat recovery device for chemical production, the flue gas waste heat collecting device composed of the heat collecting boxes, the heat collecting pipe sets, the smoke guiding pipes and the like is arranged to be capable of collecting the waste heat in the flue gas with the high collecting efficiency.