82results about "Pump installations" patented technology

A capacity control algorithm for a multiple compressor liquid chiller system is provided wherein the speed and number of compressors in operation are controlled in order to obtain a leaving liquid temperature setpoint. In response to an increase in the load in the chiller system, the algorithm determines if a compressor should be started and adjusts the operating speed of all operating compressors when an additional compressor is started. In response to a decrease in the load in the chiller system with multiple compressors operating, the algorithm determines if a compressor should be de-energized and adjusts the operating speed of all remaining operating compressors when a compressor is de-energized.

A motor. The motor includes a stator, a rotor, a top magnetic structure, and a bottom magnetic structure. The stator is disposed in a frame. The rotor is also disposed in the frame, corresponding to the stator. The rotor comprises a shaft, extended axially from the rotor. The shaft does not contact the stator or the frame. The bottom magnetic structure is at the bottom of the frame. The top magnetic structure is on the top of the frame. The top and bottom magnetic structures are opposite to each other in an axial direction. Magnetic attraction generated between the first magnetic structure and the second magnetic structure attracts and positions the shaft therebetween such that the first magnetic structure, the second magnetic structure, and the shaft are coaxially aligned.

A motor includes a base, a stator, a bearing, a positioning member and a rotor. The base includes a shaft tube. The stator is mounted around the shaft tube. The bearing is received in the shaft tube. The positioning member is fixed to an end of the shaft tube and has a pressing portion to prevent movement of the bearing in the shaft tube. A plurality of retaining plates is formed on the positioning member. Each retaining plate has a retaining end. The rotor includes a shaft having an annular groove formed in an outer periphery thereof. The retaining ends of the retaining plates are in the annular groove to avoid departure of the rotor from the base. Consequently, by a single-component design of the positioning member, departures of the rotor and the bearing are both avoided.

An apparatus for controlling an operation of compressors includes a single microcomputer for calculating stroke estimate values of multiple compressors based on voltage and current values applied to the multiple compressors, and generating a plurality of switching control signals for independently controlling a voltage applied to the multiple compressors based on the calculated stroke estimate values and pre-set stroke reference values; and switching devices each installed in the multiple compressors, for independently controlling the voltage applied to the multiple compressors according to the plurality of switching control signals. Since the reciprocating compressors are controlled by a single apparatus, costs and power consumption can be reduced.

Mechanisms, devices, apparatus, systems and methods of installing ceiling fan motor housings to ceiling mounted plates without using loose fasteners such as screws, and the like. A plate having a plurality of slots about the perimeter can be pre-mounted to a ceiling. A motor housing having clips on interior perimeter edges of the base can be positioned so that the clips are inserted into the slots. Next, the motor housing can be twisted clockwise until the clips lock to the slots allowing the ceiling fan motor to be hung without any loose fasteners. The twist-lock eliminates unsightly fasteners, such as screws underneath the housing, quickens installation time, and is easier and safer than traditional ceiling fan installation techniques.

The invention provides a pneumatic type cushion body device. The pneumatic type cushion body device comprises a controller and at least one fluctuating unit group, wherein the surface of the at leastone fluctuating unit group can form the overlapped fluctuating state; the at least one fluctuating unit group comprises at least one first air bag, at least one second air bag, a first air pump and asecond air pump; the controller is used for controlling the first air pump and the second air pump to work alternately; when the first air pump works, air can be extracted from the inflated second airbag for inflating the first air bag under the to-be-inflated state, so that the first air bag and the second air bag form the first fluctuating state within the work time of the first air pump; whenthe second air pump works, air can be extracted from the inflated first air bag for inflating the second air bag under the to-be-inflated state, so that the first air bag and the second air bag form the second fluctuating state within the work time of the second air pump; the alternating work of the first air pump and the second air pump enables the first air bag and the second air bag to performalternating fluctuating, so that the surface of the fluctuating unit group forms the overlapped fluctuating state.

The invention relates to a frequency-conversion high-speed permanent magnet shield pump integrating a frequency converter, a permanent magnet shield electric machine and a pump and puts forward that a frequency-conversion technology is applied to a permanent magnet shield pump for the first time so as to realize high-speed running of the permanent magnet shield pump and realize that the frequency-conversion high-speed permanent magnet shield pump has wider speed adjustable range. For constant-power speed regulation load, the voltage U remains unchanged, and the frequency f is changed on the basis of fundamental frequency; stator and rotor slot shapes, a winding type and the like are regulated so as to enable the stator and rotor slot shapes, the winding type and the like to adapt to a condition of frequency-conversion power supply. The frequency-conversion permanent magnet shield pump not only can ensure the big-load capability at high speed, but also can keep high-torque output at low frequency. The invention employs the design that a permanent magnet rotor magnetic path is arranged in the permanent magnet shield electric machine and has the most obvious characteristic that the inner surface of a stator and the outer surface of a rotor are respectively provided with a layer of shield cover protection. The asynchronous starting and the synchronous working of the frequency-conversion permanent magnet shield pump are realized; the pump can run at high speed with convertible frequency and no leakage.

A press-fit thrust bearing system and apparatus. A press-fit thrust bearing for an electric submersible pump includes a protruding band extending around a midsection of a bushing, the protruding band extending inward towards a drive shaft, outward towards a diffuser, or both. When extending outwardly, the band is press-fit into the diffuser to prevent dislodgment of the bushing. A non-rotating guide sleeve extends around the bushing above the protruding band, the guide sleeve interlocking with the protruding band to prevent rotation of the bushing. The guide sleeve includes a projection, the protruding band has a channel and the projection mates with the channel to form the interlock. A pair of flanged, rotatable bearing sleeves extend inwards of the single bushing and are keyed to the drive shaft. The top and bottom faces of the bushing serve as thrust handling surfaces.

A system for controlling solids within a wellbore of a well includes a pump positioned within a substantially horizontal portion of the wellbore. A first tubing string is operatively connected between the pump and a surface of the well for removing liquid from the wellbore that is pumped by the pump. A second tubing string may also be operatively connected to the pump and extends downhole of the pump. Either or both of the first and second tubing string includes a longitudinal axis that is offset from an axis of rotation about which the second tubing string is capable of being rotated.

A low-noise horizontal chemical shielding pump comprises a base, a pump body and a shielding motor, wherein the pump body and the shielding motor are transversely integrally mounted on the base. The front end and the rear end of a rotor shaft are respectively connected with a shaft sleeve and a bearing bush. A plurality of vertical grooves are arranged on the inner wall of the bearing bush, spiral grooves are connected among the vertical grooves, a plurality of radial through grooves arranged on one end face of the bearing bush are communicated with the vertical grooves, and a nickel-based alloy layer is arranged on the outer surface of the shaft sleeve. A medium generating pressure through the electric pump is filtered by a filter screen from an output of the pump body and then flows into the motor to be cooled through a circulating pipe, and noise is reduced effectively. The spiral grooves and the straight grooves are designed on the inner surface of the bearing bush, the nickel-based alloy layer is welded on the contact surface between the shaft sleeve and a thrust plate and the bearing bush in a sprayed manner and is matched with the bearing bush to be sufficiently lubricated and cooled by the medium, and correspondingly, the service lives of the shaft sleeve, the bearing bush and the thrust plate are prolonged.

A vapor compression cooling system includes a centrifugal compressor(s) for compressing a primary fluid in a cycle including at least two compressions, and a control module for controlling the centrifugal compressor dependent upon at least a condition of a secondary fluid. The module controls a power of the centrifugal compressor by adjusting a speed of the motor driving the compressor and/or an opening of guide vanes associated with at least one impeller. The module may also control a pressure drop of a primary fluid moving through at least one expansion device. The at least two compressions may be made in parallel or in series. A related method includes compressing a primary fluid in a first and a second compression cycle and adjusting a parameter of the compressor dependent upon a calculated desired power of the compressor.

The invention relates to a small centrifugal water pump with an impeller directly driven by an internal rotor motor, comprising the motor and a pump structure, wherein the motor comprises a rotor, a stator core surrounding the rotor and a winding installed on the stator core; the pump structure comprises the impeller rotatably coupled with the rotor on the same axis and a scroll surrounding the impeller and also comprises a metal body which is in tight contact with the stator core and is provided with an inner cavity; the end face at the side of the metal body, facing the scroll, is vertical to the axis and is provided with at least 2 interfaces penetrating through the inner cavity; the end face at the side of the scroll, facing the motor, is vertical to the axis and is provided with openings penetrating through the inner cavity of the scroll; the number of the openings is same as that of the interfaces; the end face at the side of the metal body, facing the scroll, is in butt joint with the end face at the side of the scroll, facing the motor; and the interfaces and the openings are connected one to one. Due to the design, conduit connection in the traditional technology is eliminated, the complexity of the structure and processing and mounting is reduced, the problem of water leakage caused by conduit ageing and joint loosening can be eliminated, and the reliability is improved.

A dispensing apparatus is proposed for a fluid having a supply tank (2) for the fluid which has an outlet (4) which can be connected to a pressure line (5) for the fluid (F), and having a rotary pump (3) which has a rotor (31) for conveying the fluid (F) into the pressure line, with the rotor (31) for the mixing of the fluid being arranged directly in the outlet (4) of the supply tank (2).

The invention relates to agricultural water conservancy equipment, in particular to agricultural hydrodynamic driven water spray equipment for a water conservancy project, and aims at achieving the technical purpose of providing the agricultural hydrodynamic driven water spray equipment for the water conservancy project adopting clean energy without needing frequent fuel supplying to improve the working efficiency. In order to achieving the above technical purpose, the invention provides the agricultural hydrodynamic driven water spray equipment for the water conservancy project, the equipmentcomprises an installation plate, supporting frames, a placement plate, a water tank, a first piston cylinder, a first piston block, a first push rod, a first sliding rail, a first sliding block, a first one-way valve and the like; the supporting frames are connected with the lower left and right sides of the installation plate, the placement plate is connected between the inner middles of the supporting frames, the water tank is placed on the placement plate, and the first piston cylinder is connected with the upper left side of the installation plate. By means of the equipment, the effect that the clean energy is adopted without needing frequent fuel supplying to improve the working efficiency is achieved.

A pump-priming device configured to fit within the pump inlet circuit formed in the valve body of an automatic transmission is disclosed. The present pump priming device comprises a fluid-conducting structure having a fluid inlet and a fluid outlet, which is fabricated from sheet metal or flexible tubing and is designed to be installed within the original equipment manufacture valve body as a drop-in-place component. The present pump priming device diverts the flow of automatic transmission fluid (i.e. regulator exhaust fluid) released by the pressure regulator valve, which under normal operating conditions would flow from the pressure regulator valve back to the sump, and to redirect such flow of regulator exhaust fluid back to the pump inlet. Such redirection of regulator exhaust fluid pressurizes the pump inlet circuit and raises the output of the pump to provide adequate transmission fluid flow within the hydraulic system at low engine speeds.

The invention relates to the technical field of electric curtains. The invention discloses a curtain device with an automatic adjusting function and a warning function. The curtain device includes a wall and a supporting rod, a thick curtain is connected to the lower ends of hanging rings, the lower end of a second moving block is connected with a thin curtain, first fan blades are arranged at theright end of the second threaded lead screw, a photoresistor is connected to the upper end of the wall and the upper side of the supporting rod, second fan blades are arranged on the outer side of arotating shaft, a control device is arranged in the wall, an air bag is connected between fixing supports, and a variable resistor corresponding to metal balls is arranged on the upper side in the wall. The photoresistor is irradiated by sunlight, the control device controls a first driving device to drive a first threaded lead screw to rotate, wind power generated by rotation of the second fan blades pushes the first fan blades to rotate slowly, the first fan blades drive the second threaded lead screw to rotate, the second moving block drives the thin curtain to move leftwards, and the structure solves the problem that an existing electric curtain cannot be adjusted according to the illumination angle.

The invention relates to an automobile electronic water pump with a side-mounted controller and attached with a cooling flow channel and an automobile. The water pump comprises a pump shell, a motor,an impeller and a controller, wherein the pump shell is formed with a pump cavity, the motor is connected with the pump shell through a pump shaft and is arranged in the pump cavity, the impeller is connected with the pump shaft, and the controller is connected with the motor and arranged outside the pump shell; and the water pump further comprises a heat dissipation cover plate and a notch, wherein the heat dissipation cover plate is arranged near the controller and used for dissipating heat, the notch is arranged near the impeller, a cooling cavity for allowing cooling liquid to circulate isarranged in one side of the heat dissipation cover plate, a first flow channel is formed between the cooling cavity and a pump cavity close to one side of the impeller, a second flow channel is formed between the cooling cavity and the notch, and the cooling liquid flows into the cooling cavity from the pump cavity through the first flow channel, and then flows into the pump cavity from the cooling cavity through the second flow channel so as to cool the controller. The water pump has the advantages of being simple in structure, convenient in operation, and capable of reducing the heat quantity of the controller and avoiding the clamping stagnation.

The invention discloses a hydro-power generation type competitive spinning system. The hydro-power generation type competitive spinning system comprises a spinning mechanism, a spiral lifting mechanism, a hydro-power circulating mechanism, a floating ball circulating mechanism, an electronic counting display mechanism and the like. The two ends of a central rotating shaft of the spiral lifting mechanism are installed in the center of the two ends of a cylindrical barrel through bearings respectively; continuous spiral blades are distributed on the outer side of the central rotating shaft; thecylindrical barrel is obliquely arranged, the bottom of the cylindrical barrel is provided with a water inlet, and the top of the cylindrical barrel is provided with a water outlet; the central rotating shaft is led out from the lower end of the cylindrical barrel and then is provided with a straight gear; and the straight gear is meshed with helical teeth on the side face of the vehicle. In addition to the exercise effect in the traditional sense, the spinning can convert mechanical energy generated when people use the spinning into water potential energy through mechanical devices such as Archimedes spiral and the like, thereby meeting the requirements of green energy, being used as a competitive product of fitness exercise equipment and public places, having great development space by virtue of visual energy storage characteristics, and being suitable for popularization and application.

The invention relates to an oilless air compressor, in particular to an external heat dissipation portable oilless air compressor. The invention provides an external heat dissipation portable oil-free air compressor which is relatively simple in structure, relatively low in manufacturing cost of the oil-free air compressor and relatively high in heat dissipation effect. An external heat dissipation portable oilless air compressor comprises two supporting frames, an air compressor body, a filter element and the like, the air compressor body is installed between the tops of the two supporting frames, and the front side of the air compressor body is connected with the filter element in a clamped mode. The air purifier has the beneficial effects that dust in air can be filtered under the filtering action of the filter element, and the air compressor can compress the filtered air into the air tank to be stored; a worker can pull the grip to swing by hand, so that the driving plate can drive the first sliding frame and the piston to slide, the water tank can be pressurized, cooling liquid in the water tank can be sprayed on the surface of the oilless air compressor through the nozzle, and the purpose of cooling and heat dissipation of the oilless air compressor is achieved.

An air compressor having a pressure gauge, the pressure gauge contains: a hollow tube, a drive element, an anti-leak spring, a resilient element, and a cap. The hollow tube includes an accommodation chamber, a connector having a conduit, and a display unit. The drive element includes a protection unit, a first open segment, a second distal segment, a receiving portion, a hollow extension, and a protrusion. An anti-leak spring is received in the hollow extension of the drive element and abuts against the protrusion and the protection unit. The resilient element is received in the receiving portion. The cap includes a seat, a push bolt, and multiple passages. The accommodation chamber has a first fixing section and a second fixing section, a diameter of which is different from that of the first fixing section. The hollow tube further includes a tilted surround section and at least one discharge orifice.

The invention discloses an automobile electronic water pump. The two sides of a pump cover are inwards concaved, and the outer wall of the pump cover is wrapped by an arc-shaped sponge layer. One endof the pump cover is connected with a water inlet, and the side, penetrating through the arc-shaped sponge layer, of the pump cover is connected with a Y-shaped water outlet. One side of the water outlet is connected with a guide pipe, and the other end of the guide pipe is connected with an arc-shaped transferring water tank. The top of the arc-shaped transferring water tank is provided with an electronic control panel, and the bottom is attached to the outer wall of a motor. The motor center is provided with a rotating shaft. The left end of the rotating shaft is sequentially and fixedly provided with a first impeller and a second impeller, and the right end of the rotating shaft is fixedly provided with a third impeller. The first impeller and the second impeller are arranged in the pump cover. The third impeller is arranged in a water absorbing tank, and the water absorbing tank is connected with the arc-shaped transferring water tank and the pump cover through the guide pipe. Thebottom of the water pump is provided with a base. The base comprises a first supporting plate, a spring layer, a second supporting plate and a sponge layer. The bottom of the first supporting plate isconnected with one end of the spring layer, and the other end of the spring layer is connected with the second supporting plate. Gaps between the first supporting plate and the second supporting plate are filled with sponge, and a whole sponge layer is formed.

A pump device includes a casing, an impeller, a base, and a motor. The casing includes a pump chamber, and an inlet and an outlet. The impeller is accommodated in the pump chamber. The motor is connected to the casing for driving the impeller to rotate and includes a rotor chamber for receiving a rotor. The base is disposed between the impeller and the motor and includes an accommodating groove having an inlet port in communication with the rotor chamber to allow fluid in the pump chamber to enter into the rotor chamber. In the pump device, precipitation has been performed to fluid in the accommodating groove before the fluid enters into the rotor chamber, thus the impurity particles can be prevented from entering into the rotor chamber, thereby prolonging the service life of the pump device.

The invention discloses a butterfly door regulating device with a self-adaption regulating function. The butterfly door regulating device comprises a supporting frame, a left butterfly door, a right butterfly door and a wind collection barrel. Supports are arranged at the upper end and the lower end of the supporting frame correspondingly. A cushion plate is fixed to each support. The left butterfly door and the right butterfly door are symmetrically arranged between the cushion plates. The left butterfly door and the right butterfly door are connected through a spring and the supporting frame. The wind collection barrel fixed to the supporting frame is arranged on the outer circle of the left butterfly door and the outer circle of the right butterfly door. A nylon rope is arranged between the left butterfly door and the right butterfly door. One end of the nylon rope is fixed to the cushion plate at the upper end, and the other end of the nylon rope penetrates a through hole located in the lower end of the wind collection barrel, extends to the exterior of the wind collection barrel and is pressed through a rope pressing buckle. The butterfly door regulating device is simple in structure, low in production cost and convenient to maintain and clean in the later period; the butterfly doors which are symmetrically arranged are regulated through the nylon rope, and therefore the air volume can be controlled; the plug-in type design is adopted for the wind collection barrel, and cleaning and maintaining in the later period are facilitated.

The invention discloses a water cooling heat dissipation fan which comprises a shell; universal wheels are arranged at the bottom of the shell; a drainage plug is arranged at the bottom in the shell;an air inlet is formed in the right side wall of the shell; an air outlet is formed in the left side wall of the shell; a micro pump is installed at the bottom in the shell; a fan body is installed ina positioning ring and comprises a motor and fan leaves at the output end of the motor; a buoyancy ball switch is installed at the position, close to the bottom of the shell, on inner side wall of the shell; and a buzzer is installed on one side of the top of the shell. For the water cooling heat dissipation fan provided by the invention, the micro pump is utilized to continuously provide water to a wet cloth curtain, so that the wet cloth curtain keeps wet; when the fan body works, external air passes through the air inlet, then passes through the wet cloth curtain and finally flows toward the air outlet through an air outlet pipe, and the air after being wetted and cooled is sprayed out through the air outlet, so that the effect of water cooling is realized, the movability is greatly improved, the water shortage phenomenon is avoided, and the water cooling heat dissipation fan has very high practicability.