19592results about "Positive displacement pump components" patented technology

An electrocardiogram device configured to transmit at least one signal responsive to a wearer's cardiac electrical activity can include a disposable portion and a reusable portion configured to mechanically and electrically mate with each other. The disposable portion can include a base having at least one mechanical connector portion, a plurality of cables and corresponding external ECG electrodes, and a first plurality of electrical connectors associated with the plurality of cables. The reusable portion can include a cover having at least one mechanical connector portion, a second plurality of electrical connectors configured to electrically connect with the first plurality of electrical connectors of the disposable portion, and an output connector port configured to transmit at least one signal responsive to one or more signals outputted by the external ECG electrodes of the disposable portion.

To provide a technique for suppressing influences caused by the presence of a space communicating in a radial direction in a protruding portion, which protrudes from a stator core, in a stator coil.SOLUTION: A compressor 100 comprises a compression mechanism part 120 and a motor 200 which are stored in a sealed container 110. A stator 300 of the motor 200 includes a stator coil 340 wound around a plurality of teeth of a stator core 310. The stator coil 340 includes a first protruding portion 340A and a second protruding portion 340B protruding from the stator core 310 to a first side and a second side in an axial direction. At least outside of the first protruding portion 340A, a first enclosure wall 350 is provided which extends without a gap in the axial direction and a circumferential direction.SELECTED DRAWING: Figure 1

A valve assembly includes an upper portion to be coupled to guide legs, a cavity being formed within one of the upper portion or the guide legs and a coupling member being associated with the other of the upper portion or the guide legs, wherein the upper portion is coupled to the guide legs via a single force application process.

A fluid end includes a housing having a bore extending toward a cavity and a wear sleeve positioned within the bore. The fluid end also includes a plunger positioned within a plunger bore extending through the wear sleeve, the plunger reciprocating within the plunger bore. The fluid end further includes a wear sleeve retainer coupled to the housing and positioned to block axial movement of the wear sleeve, the wear sleeve retainer having external threads along a body that engage internal threads formed in the housing. The fluid end also includes an anti-rotation system, coupled to the housing, the anti-rotation system engaging the wear sleeve retainer to block rotation of the wear sleeve retainer in at least one direction. The fluid end further includes a packing nut coupled to the wear sleeve retainer.

A pump comprising a fluid end comprising a bellows housing having an interior volume, a power end, a reciprocating element, a bellows disposed at least partially within the bellows housing and dividing the interior volume of the bellows housing into a first volume interior to the bellows and a second volume exterior to the bellows, suction valve(s) fluidly coupled to the second volume of the bellows housing. and discharge valve(s) fluidly coupled to the second volume of the bellows housing. The suction valve(s), the discharge valve(s), or both the suction valve(s) and the discharge valve(s) comprise a redundant valve including at least two of said valves, such that, during normal operation, one of the at least two said valves of the redundant valve is open / online while another of the at least two said valves of the redundant valve is closed / offline.

A packing assembly includes a packing sleeve having a first sleeve portion and a second sleeve portion, wherein a first sleeve portion outer diameter is larger than a second sleeve portion outer diameter and a first sleeve portion inner diameter is larger than a second sleeve portion inner diameter. The packing assembly also includes a groove formed in the second sleeve portion outer diameter. The packing assembly further includes a shoulder formed at a transition between the first sleeve portion and the second sleeve portion. The packing assembly includes a shelf formed at the transition between the first sleeve portion and the second sleeve portion. The packing assembly also includes a plurality of packing components arranged within the first sleeve portion inner diameter, at least a portion of the plurality of packing components engaging the shelf. The packing assembly further includes a seal positioned within the groove.

A connecting rod assembly includes a crosshead for coupling a connecting rod to a plunger, the crosshead having a hole extending through the crosshead. The connecting rod assembly also includes a knuckle cage positioned within the crosshead, the knuckle cage extending through the hole and including a cutout to provide access to a passage formed in the knuckle cage. The connecting rod assembly further includes a knuckle positioned within the passage of the knuckle cage, the knuckle having a mounting surface that is substantially planar, the mounting surface coupling to the connecting rod at a mating end with a substantially planar mating end surface.

A connecting rod assembly includes a crosshead for coupling a connecting rod to a plunger, the crosshead having a hole extending through the crosshead. The connecting rod assembly also includes a knuckle cage positioned within the crosshead, the knuckle cage extending through the hole and including a cutout to provide access to a passage formed in the knuckle cage. The connecting rod assembly further includes a knuckle positioned within the passage of the knuckle cage, the knuckle having a mounting surface that is substantially planar, the mounting surface coupling to the connecting rod at a mating end with a substantially planar mating end surface.

A fluid end, includes a plunger reciprocating within a first bore, the plunger increasing a pressure of a fluid within a pressure chamber. The fluid end also includes a second bore. The fluid end further includes a plug assembly associated with the second bore. The plug assembly includes a plug body positioned within the second bore. The plug assembly also includes a lock ring positioned, at least in part, within the second bore, the lock ring positioned to be driven radially outward responsive to a longitudinal force applied to the plug body.

A valve member for a spring-loaded valve assembly includes a top portion having a spring retaining recess, the spring retaining recess extending into the top portion to form a void space, the void space to receive at least one coil of a spring, the spring retaining recess having a recess diameter that is smaller than a top portion diameter, wherein the recess diameter is larger than a rest diameter of a spring base including the coil, the spring retaining recess blocking expansion of the at least one coil when the spring is compressed. The valve member also includes a bottom portion coupled to the top portion. The valve member further includes a sealing element positioned axially below a shoulder of the top portion and legs coupled to the bottom portion.

A packing assembly includes a packing sleeve having a first sleeve portion and a second sleeve portion, wherein a first sleeve portion outer diameter is larger than a second sleeve portion outer diameter and a first sleeve portion inner diameter is larger than a second sleeve portion inner diameter. The packing assembly also includes a groove formed in the second sleeve portion outer diameter. The packing assembly further includes a shoulder formed at a transition between the first sleeve portion and the second sleeve portion. The packing assembly includes a shelf formed at the transition between the first sleeve portion and the second sleeve portion. The packing assembly also includes a plurality of packing components arranged within the first sleeve portion inner diameter, at least a portion of the plurality of packing components engaging the shelf. The packing assembly further includes a seal positioned within the groove.

A compressor assembly may include a shell, a discharge fitting, a muffler, a compression mechanism, and a motor. The shell may have an opening therethrough with the discharge fitting generally extending therefrom. The muffler may be in communication with the discharge fitting and may be external to the shell. The muffler may have an inlet proximate the discharge fitting, an outlet distal from the discharge fitting, and a body portion extending therebetween. The muffler may include a valve assembly proximate the outlet. The compression mechanism may be contained within the shell and include a suction inlet and a discharge passageway. The discharge passageway may be connected to the opening in the shell for direct discharge of refrigerant from the compression mechanism to the discharge fitting. The motor may be contained within the shell and drivingly coupled to the compression mechanism.

A fluid end, includes a plunger reciprocating within a first bore, the plunger increasing a pressure of a fluid within a pressure chamber. The fluid end also includes a second bore. The fluid end further includes a plug assembly associated with the second bore. The plug assembly includes a plug body positioned within the second bore. The plug assembly also includes a lock ring positioned, at least in part, within the second bore, the lock ring positioned to be driven radially outward responsive to a longitudinal force applied to the plug body.

The invention relates to the technical field of water pump control, and provides a water supply and drainage pump set assembly and a digital control system, which realize self-adaptive control under a complex working condition by fusing multi-source data such as pressure, flow and temperature, break through the dependence of traditional control on a single parameter, and improve the response capability of the control system to water fluctuation and equipment state change. Based on a long-short-term memory network trained by historical multi-source data, a control system can predict a pressure set value in advance, the pressure set value is solved through a particle swarm algorithm, and weight fusion is performed according to the predicted pressure set value and the solved pressure set value to generate an adjustment instruction, so that the starting and stopping times of equipment and mechanical wear are reduced, and the service life of the equipment is prolonged. The maintenance cost is reduced, and water resource waste is avoided through accurate control; and meanwhile, through a redundancy design and a fault-tolerant mechanism, the control system can still operate stably under the scenes of sensor faults, equipment abnormity and the like.

A portable electric inflator includes: a core assembly including a motor and an air compressing mechanism, the motor configured to drive the air compressing mechanism to compress and discharge air; a housing defining a receiving space for accommodating the core assembly, and having an external surface that defines a display receiving hole and a number of through holes communicating with the receiving space; a cloth in full contact with and covering the external surface of the housing, the cloth defining an opening, an edge of the opening extending from a junction of the display receiving hole and the external surface of the housing into the housing, forming a side surface covering portion that is in contact with an inner side surface of the display receiving hole; and a display received in the display receiving hole, the display comprising a lateral surface abutting against the side surface covering portion.

The invention provides a heat dissipation method, device and equipment for a fuel cell air compressor. The method comprises the following steps: collecting a multi-dimensional heat data set of the fuel cell air compressor in a layered manner; performing feature extraction on the multi-dimensional heat data set, and inputting the extracted feature data set into a neural network model based on deep transfer learning to obtain a corresponding heat dissipation efficiency attenuation prediction model; establishing a multi-objective optimization equation of the air compressor based on the multi-dimensional heat data set and the heat dissipation efficiency attenuation prediction model, and solving the multi-objective optimization equation to obtain a heat dissipation control strategy set; and dynamically partitioning a heat dissipation system of the air compressor, and cooperatively adjusting the flow and the flow direction of cooling liquid in each dynamically partitioned region according to the heat dissipation control strategy set to realize heat dissipation of the air compressor. According to the invention, the problems of cooling efficiency attenuation and non-uniform resource distribution caused by cooling liquid quality change and integral control in the prior art are solved.

A fluid end includes a housing having a bore extending toward a cavity and a wear sleeve positioned within the bore. The fluid end also includes a plunger positioned within a plunger bore extending through the wear sleeve, the plunger reciprocating within the plunger bore. The fluid end further includes a wear sleeve retainer coupled to the housing and positioned to block axial movement of the wear sleeve, the wear sleeve retainer having external threads along a body that engage internal threads formed in the housing. The fluid end also includes an anti-rotation system, coupled to the housing, the anti-rotation system engaging the wear sleeve retainer to block rotation of the wear sleeve retainer in at least one direction. The fluid end further includes a packing nut coupled to the wear sleeve retainer.

Systems and methods disclosed herein include a portable air pump and inflator system comprising an electric air compressor, a compressor housing enclosing the electric air compressor, an air hose attached or attachable to an air outlet of the electric air compressor, and a housing base attached to the compressor housing. The housing base comprises a rigid base portion that is attached to the compressor housing and a plurality of flexible foot extensions that extend from the rigid base portion. The flexible foot extensions are configured to support the portable air pump and inflator system on a surface and dampen vibrations caused by the operation of the electric air compressor.

The invention discloses an immersed server operation control method and system, and relates to the technical field of immersed cooling, and the method comprises the steps: judging whether a liquid level is higher than a preset starting liquid level, and activating a cooling liquid circulation system to confirm liquid flow; the liquid inlet speed of the cooling liquid is optimized according to feedback of the flow velocity sensor, and the stable state of the liquid level in the server cabinet is monitored; whether cooling liquid leaks or not is judged based on liquid level acceleration and flow velocity deviation, when the liquid level is insufficient, an alarm is triggered, and the liquid level and circulation time are automatically adjusted. According to the method, the automation level and the operation safety of the system are improved, sufficient supply of the cooling liquid under the high-load condition of the server is ensured, the downtime caused by leakage of the cooling liquid is shortened, the long-term operation cost of the system is reduced through timely maintenance notification, and the service life of the system is prolonged by automatically adjusting the liquid level and the circulation time. And quick recovery of the system when leakage occurs is ensured, so that the reliability and the fault recovery capability of the system are improved.

The present invention provides a cryopump and a regeneration control method thereof. The cryopump includes a cryopump container, a cold shield unit, an adsorption array, a regeneration unit, and a refrigeration unit. The cold shield unit is installed inside the cryopump container, and the adsorption array is composed of an outer condensation shielding plate and an inner cryogenic adsorption plate, and the surface is electroplated and polished. The cooling structure adopts a combination connection method of a main cooling plate and an annular secondary cooling plate to realize the separate disassembly and assembly of the condensation shielding plate and the cryogenic adsorption plate. The regeneration control method monitors the pressure in the container in real time, calculates and processes the pumping speed data. When the pumping speed is lower than the set threshold, the system automatically starts the regeneration process and selects different regeneration strategies (primary, secondary, and complete regeneration) according to the environment and gas type. During the regeneration process, it is determined whether it is completed by temperature data. After the regeneration is completed, the system resumes normal operation and continues to evacuate. The overall process ensures the continued effectiveness and system stability of the cryopump.

To provide an ultrasonic transmission medium circulation system of an ultrasound treatment head, and a method therefor.SOLUTION: An ultrasonic transmission medium circulation system of an ultrasound treatment head and a method therefor are provided. In the system and the method therefor according to an embodiment, the supply, discharge and circulation of an ultrasonic transmission medium with respect to the ultrasound treatment head are all possible by means of a single pump. Further, a single system is driven by changing a passage through selective opening and closing of valves in the system according to a material of a membrane, so that there is no need to drive another system separated by the material of the membrane.SELECTED DRAWING: Figure 1

The invention discloses a water pump and water purification equipment, and relates to the technical field of water purification. The water pump comprises a valve seat, a pump cover and a sealing piece; the pump cover is mounted on the valve seat; according to the technical scheme, the sealing piece is arranged between the valve seat and the pump cover, the first separation barrel and the second separation barrel are additionally arranged, so that the sealing piece can be more tightly connected between the two separation barrels in an abutting mode, the turned-over edge is arranged between the first separation barrel and the second separation barrel, the turned-over edge wraps the periphery of the first separation barrel and / or the periphery of the second separation barrel, and therefore the sealing effect is improved. Through the design, the sealing performance of the water pump is improved, leakage of gas or liquid is avoided, and therefore the overall performance of the water pump is improved.

A valve assembly includes an upper portion to be coupled to guide legs, a cavity being formed within one of the upper portion or the guide legs and a coupling member being associated with the other of the upper portion or the guide legs, wherein the upper portion is coupled to the guide legs via a single force application process.

The invention discloses a deep fusion air pressure intelligent optimization control method and system. The method comprises the steps that the air load of a user side is obtained; calculating plan parameters of the air compressor by adopting a feed-forward intelligent control strategy based on the air load; calculating target parameters of the air compressor by adopting a PLC feedback control strategy based on the planned parameters of the air compressor and the real-time pressure of the system; the air compressor plan parameters comprise the opening number of the air compressors, the opening degree of an inlet adjusting valve, the closing degree of an emptying adjusting valve and the operation frequency; the target parameters of the air compressor comprise the opening number, the operation frequency and the opening degree of an inlet adjusting valve of the air compressor; accurate control and adjustment of the operation process of the air compression system are achieved, the problems that due to manual control, the output pressure fluctuation of the air compression system is large, stable operation of the system cannot be guaranteed, and the energy consumption and the air supply cost of the air compression system are high are solved, energy efficiency fluctuation is accurately analyzed, potential energy consumption problems are predicted, and the energy efficiency of the air compression system is improved. The overall operation efficiency is improved, and the optimal energy efficiency is achieved.

The utility model relates to the technical field of shock absorption, in particular to a rubber foot pad, which is applied to a compressor and comprises a supporting top seat, a supporting base, an anti-deviation structure and a rubber pad, the top of the supporting top seat is provided with a mounting part and a buffer area room, one end of the rubber pad is fixedly arranged at the bottom of the supporting top seat, and the top of the supporting base is fixedly connected with one end, far away from the supporting top seat, of the buffer area room. The mounting part is arranged at the bottom of the supporting base, and the mounting part, the supporting top seat, the buffer area room and the supporting base are all hollow, so that a polish rod at the bottom of a compressor can be inserted conveniently, and the damping effect of the rubber foot pad is improved by designing the buffer area room and changing rubber components, namely adjusting hardness and density; friction between the supporting base and a compressor chassis is increased, displacement caused by vibration is reduced, and therefore vibration and abnormal noise of an outdoor unit are reduced.

The invention provides a swing vibrator type piezoelectric micropump and a driving and manufacturing method thereof. The piezoelectric micropump comprises a supporting structure, a first through-flow layer, a second through-flow layer and an actuator, wherein the first through-flow layer and the second through-flow layer are arranged at the two ends of the supporting structure, and the actuator is arranged in the supporting structure. The actuator comprises two actuating units which are arranged in parallel. The actuation unit includes a substrate and a vibration element. The vibration element is fixed on the substrate; the two actuating units are of the parallel and opposite cantilever structures on the opposite sides, center stress similar to that of a conventional annular actuator structure cannot be generated in the swing gas pumping process of the two actuating units, and the service life of the piezoelectric micropump can be prolonged. Meanwhile, when different excitation signals are input into the two actuating units, the two actuating units can generate asynchronous vibration, so that reverse airflow with certain continuity is generated in the piezoelectric micropump, the effect of regularly self-cleaning the air inlet is achieved, and long-time continuous work of the piezoelectric micropump in a complex environment is achieved.

In order to improve the stability and reliability of the micro diaphragm pump, the invention provides the micro diaphragm pump with the columnar bubble and liquid monitoring function. The channel is formed in the pump cavity, the valve body is installed in the channel, the valve body is composed of the upper layer, the middle layer and the friction layer, the sensing part is arranged on the middle layer, the sensing area is formed through cooperation of the friction layer and the sensing part, and then columnar bubbles and liquid in the micro diaphragm pump are monitored. The device is small in size, high in energy density, high in controllability and capable of monitoring columnar bubbles and liquid.

The present invention provides a composite multi-compression mechanism vacuum pump with a high compression ratio and high pumping speed. The multi-compression mechanism includes three types: a turbine, a traction wheel, and a vortex blade array. The traction wheel is divided into a first-stage traction wheel and a second-stage traction wheel. A first-stage exhaust port and a second-stage exhaust port are respectively provided on the base, and a valve is provided on the first-stage exhaust port. In the first pumping stage, the valve is opened, and most of the gas flows through the turbine and the first-stage traction wheel and is discharged from the first-stage exhaust port. A small part of the gas flows through the turbine, the first-stage traction wheel, the second-stage traction wheel, and the vortex blade array in sequence and is discharged from the second-stage exhaust port. In the second pumping stage, the valve is closed, and the gas flows through the turbine, the first-stage traction wheel, the second-stage traction wheel, and the vortex blade array and is discharged from the second-stage exhaust port. The present invention solves the problem that high pumping speed and high vacuum cannot be achieved at the same time and that the molecular pump must be equipped with a pre-stage pump by using multiple compression mechanisms in series. The present invention can replace a traditional set of multiple vacuum pumps with a single vacuum pump, significantly reducing costs.

Systems and methods are provided for a portable air compressor comprising an electric battery, an electric motor, a piston, and an air hose. The electric motor is powered by the electric battery. The piston is coupled to and driven by the electric motor. The piston is configured to compress air within a piston cylinder. The air hose has a first end attachable to an air outlet of the piston cylinder and a second end attachable to an inflatable object. The portable air pump is configured to inflate the inflatable object to a target air pressure. When the target air pressure is below a predetermined pressure threshold, the portable air pump inflates the inflatable object at a first inflation rate. When the target air pressure is above the predetermined pressure threshold, the portable air pump inflates the inflatable object at a second inflation rate greater than the first inflation rate.

The utility model relates to the technical field of pumping unit horseheads, in particular to an automatic pin pulling and avoiding pumping unit horsehead device which comprises a horsehead body, a rope connector, a connecting rope, a beam hanger, a connecting pin and a driving mechanism. The horsehead body is reasonable and compact in structure, the end portion of the walking beam of the pumping unit can be conveniently arranged in the installation groove through the installation groove, then the connecting pin is made to move backwards through the driving mechanism and then is inserted into the inner side of the end portion of the walking beam of the pumping unit, and therefore the horsehead body and the end portion of the walking beam of the pumping unit can be installed together through the connecting pin in a hinged mode. Then, a positioning pin is mounted between the first mounting hole and the end part of the pumping unit walking beam, so that the horsehead body and the pumping unit walking beam can be fixedly mounted together, and when the pumping unit needs to be maintained, after the driving mechanism works, the connecting pin moves forwards to be separated from the pumping unit walking beam, so that the aim of avoiding the horsehead body is fulfilled; in this way, hoisting equipment is not needed, personnel do not need to climb, economic cost is saved, and personnel operation is safer.