314 results about "Piston pump" patented technology

Apparatus and associated methods relate to using an electro-hydraulic solenoid valve to provide regulation of fluid displacement of a variable-displacement hydraulic pump. A mechanical control mechanism is configured to control displacement of hydraulic fluid pumped from a hydraulic input port to a hydraulic output port. The electro-hydraulic solenoid valve regulates fluid conductivity between a hydraulic output port of the variable-displacement hydraulic pump and a hydraulic control cylinder, which operates a hydraulic control piston coupled to the mechanical control mechanism controlling fluid displacement. An electronic control unit is configured to generate and transmit an electrical control signal to the electro-hydraulic solenoid valve in response to a metric of the variable-displacement hydraulic pump as measured by a transducer. The electronic control unit generates the electrical control signal so as to control the metric measured to within a predetermined control band about a target value.

The present invention relates to a method for coating a lumen of a tube using fluid displacement techniques. A coating solution is introduced into the lumen by positive or negative displacement, excess solution is removed to form a thin film, and the film is subsequently cured. The displacement system may include a piston pump, a peristaltic pump, or a syringe. The method may further allow for multiple coating layers, coating of both inner and outer surfaces, and simultaneous coating of multiple tubes using a manifold.

This application relates to the field of rotary piston pump technology, specifically to a rotary piston pump volume adjustment device, a piston pump, and a piston pump injection system. The volume adjustment device includes a frame, a fixed sleeve, a rotating shaft base, and a drive assembly. The fixed sleeve has a connecting structure for engaging with the rotary piston pump head. The rotating shaft base is mounted in a sliding groove on the fixed sleeve. The drive assembly drives the rotating shaft base to reciprocate. In this application, the drive assembly drives the rotating shaft base to reciprocate, causing the fixed sleeve and the pump head on the fixed sleeve to swing back and forth relative to the frame and pump body, thereby changing the tilt angle of the pump head relative to the pump body. This precise mechanical transmission method can accurately control the swing angle of the pump head, thus achieving precise adjustment of the rotary piston pump volume.

The utility model relates to a dust explosion protection system for a chemical workshop. The dust explosion protection system comprises a dust removal assembly and a spraying assembly, the dust removal assembly comprises a dust removal box, an air inlet pipe and an air outlet pipe are connected to the dust removal box, a filter cloth frame and a screen plate are installed on the inner wall of the dust removal box, a plurality of pieces of filter cloth are connected between the filter cloth frame and the screen plate, an exhaust fan is installed in the dust removal box, a transmission rod penetrates through the center of the exhaust fan, and a driving motor is installed on the outer side of the dust removal box; a worm is in butt joint with the driving motor, a turbine is meshed with the worm, and the turbine is in butt joint with the transmission rod; the spraying assembly comprises a piston pump, a water inlet pipe and a water outlet pipe are in butt joint with the piston pump, the piston pump comprises a pump shell, a rotary disc is installed in the pump shell, a connecting rod is hinged to the rotary disc, a piston is hinged to the connecting rod, a rotary shaft penetrates through the center of the rotary disc, a first gear is in butt joint with the rotary shaft, a second gear is meshed with the first gear, and the second gear is in butt joint with a worm. And the driving motor can drive the piston pump to operate while driving the draft fan to operate.

This utility model belongs to the technical field of automotive air suspension systems, specifically relating to an air circuit system for air suspension, which helps to reduce the number of solenoid valves. The air inlet is connected to the piston pump inlet via air passage a, the piston pump outlet is connected to the dryer tank inlet via air passage b, air passage c is provided at the dryer tank outlet, air passage d is connected to the quick-connect fitting of the air tank, air passage d is connected to air passage a via air passage e, air passage d is connected to air passage c via air passage f, air passage g is connected to the quick-connect fitting of the air spring, air passage g is connected to air passage a via air passage h, air passage g is connected to air passage c via air passage i, and air passage c is connected to the exhaust port via air passage j. A solenoid valve I is installed on the valve block to control the switching of air passage h and air passage i with air passage g, respectively; a solenoid valve VI is installed on the valve block to control the switching of air passage e and air passage f with air passage d, respectively; and a solenoid valve VII is installed on the valve block to control the opening and closing of air passage j.

The invention discloses a piston pump, a brake system and a vehicle. The piston pump comprises a guide structure, a piston body and an anti-torsion structure. The piston body is arranged in the guide structure, and the piston body can move in the axial direction of the piston body relative to the guide structure; the anti-torsion structure is arranged between the piston body and the guide structure, the anti-torsion structure comprises an anti-torsion guide column and an anti-torsion guide groove, and the anti-torsion guide column is arranged on one of the piston body and the guide structure; the anti-torsion guide groove is formed in the other one of the piston body and the guide structure, and the anti-torsion guide column is arranged in the anti-torsion guide groove in a guiding fit mode so as to limit rotation of the piston body in the circumferential direction. And the gap between the anti-torsion guide column and the anti-torsion guide groove in the circumferential direction of the piston body is L, wherein L is larger than 0 and smaller than or equal to R + 0.2 * (N-1). Therefore, the piston body can be prevented from rotating in the circumferential direction, the transmission efficiency and the transmission precision of the piston body are improved, the transmission loss is reduced, the reliability and the stability of the piston pump are improved, and the service life of the anti-torsion structure is prolonged.

The invention relates to a cartridge-type electromagnetically actuated double-acting reciprocating piston pump (1), the reciprocating piston pump (1) having a pump axis (10), a pump inlet (5), and a pump outlet (6) and comprising the following: a mounting system (31) which accommodates two coil assemblies (25) of the same design in a stationary manner opposite one another in the axial direction, the first coil assembly (25') having a first annular coil (12') and a first fixed armature (13'), and the second coil assembly (25'') having a second annular coil (12'') and a second fixed armature (13''); a pump piston (19) which integrates the function of an armature and of a delivery piston and is mounted for movement along the pump axis (10) and is arranged radially inside coaxially to the first and second coil assemblies (25', 25''); a first and a second displacement chamber (24', 24''), the volume of which changes when the pump piston (19) in the form of an armature is moved under the effect of the coil assemblies (25); two inlet valves of the same design, specifically a first inlet valve (20') and a second inlet valve (20''); two outlet valves of the same design, specifically a first outlet valve (21') and a second outlet valve (21'').

The application discloses a coal gangue slurry preparation and conveying system and method for goaf filling, which comprises a material crushing system including a storage bin, a vibrating feeder, a multi-stage crushing system, a vibrating screen and a buffer bin; the vibrating feeder is provided with the storage bin in front and the multi-stage crushing system in back; the multi-stage crushing system comprises a plurality of crushing device systems; after being processed by a first set of crushing device systems, the material enters the vibrating screen for screening; the qualified coal gangue powder enters the buffer bin, and the unqualified material enters a second set of crushing device systems for crushing again; a stirring and slurry preparation system is used for stirring and slurry preparation of the material in the buffer bin and then feeding into a pipeline conveying system; the pipeline conveying system is provided with at least two piston pumps, which are aggregated by a shunt valve to a grouting conveying pipeline and then conveyed to a grouting area. Through the integration of the coal gangue slurry preparation and conveying, the underground filling of the goaf and the accumulation of coal-based solid waste are solved.

The utility model discloses veterinary drug liquid preparation filling equipment easy to clean, relates to the technical field of veterinary drug filling equipment, and solves the problems that in the prior art, cleaning of a filling head is time-consuming and labor-consuming, and the utilization rate of the equipment is reduced. Comprising a filling mechanism, the filling mechanism comprises a machine body, filling heads and a piston pump, the piston pump is connected to the upper end of the machine body, the filling heads are connected with a liquid outlet pipe of the piston pump through liquid conveying pipes, a liquid inlet pipe of the piston pump is connected with a cleaning pipe through a three-way valve, and the cleaning pipe communicates with a cleaning agent storage box; the cleaning agent storage box is connected to the upper end of the machine body; a cleaning tank is arranged at the lower end of the filling head, a conveying mechanism is arranged at the lower end of the cleaning tank, and the conveying mechanism corresponds to the filling head. The cleaning device has the beneficial effects that the piston pump and a connecting pipeline of the piston pump can be cleaned, residual liquid medicine in the filling head can be thoroughly cleaned, and the residual liquid medicine is prevented from breeding bacteria.

The invention discloses a piston pump and a clothes processing device, the piston pump comprises a pump body, a piston and a driving assembly, the pump body is of an integrated structure, and the pump body is provided with a piston cavity; the piston is arranged in the piston cavity in a reciprocating sliding mode in the axial direction of the piston cavity. The driving assembly is connected to the pump body, and part of the driving assembly extends into the piston cavity so as to drive the piston to slide in a reciprocating mode. The pump head is connected to the pump body and provided with a liquid outlet and a liquid inlet which are both communicated with the piston cavity. The pump body is of the integrated structure and is provided with the piston cavity, connecting points can be reduced, and therefore possible leakage points and fault points are reduced, the pump body can bear longer-time use, and the stability and reliability of the whole structure of the piston pump are improved. And one part of the pump body is used as a mounting part of the driving assembly, so that the number of parts of the piston pump is reduced, and the assembly process is simplified.

The invention discloses an agricultural plunger pump, and relates to the technical field of agricultural plunger pumps, the agricultural plunger pump realizes self-cleaning of a filter screen II through ball valve switching, has no complex electrical control, is suitable for agricultural environment use, can prevent the filter screen II from being blocked through regular back flushing, and improves long-term working efficiency, and multiple layers of filter screen plates are arranged in a filter screen cylinder and are arranged in a stepped manner, so that the filter screen cylinder is convenient to clean. Meshes are reduced layer by layer, large-particle impurities are blocked by the first-layer filter screen, fine particles are intercepted by the subsequent filter screens, and the problems that the load of a single filter screen is too large, water flow pressure disappears after flushing is completed, a compressed spring pushes a movable column to rebound, a baffle rapidly closes an inlet groove, physical sealing is formed, and a filter screen cylinder can be detached and cleaned at regular intervals are solved. And the auxiliary cylinder can be synchronously cleaned through thread disassembly, the overall service life is prolonged, smooth water inlet is ensured through the clean filter screen II, continuous flow and pressure output can be realized, and the irrigation efficiency is ensured.

A piston pump for a high pressure cleaning device is provided, having a pump housing, which includes a first housing part and a second housing part. The first housing part forms a suction conduit and a pressure conduit, and the second housing part forms a plurality of pump chambers each in flow connection with the suction conduit by an inlet channel and with the pressure conduit by way of an outlet channel. The first insert part includes an inlet valve seat and a guide member arranged offset from said inlet valve seat. The inlet closing body includes an inlet valve stem that adjoins the inlet valve plate and is displaceably mounted on the guide member. The first insert part includes an annular inlet valve seat body that points toward the pump chamber and forms the inlet valve seat, wherein the guide member is arranged upstream of the inlet valve seat.

The invention provides a functional liquid quantitative adding device, and belongs to the technical field of smart home. The functional liquid quantitative adding device comprises a liquid storage container, a one-way valve system and a water tank, the liquid storage container is of a double-layer vacuum structure, and a vacuum inner bag is arranged in the liquid storage container. The upper port of the liquid storage container is connected with a piston pump through a detachable structure, and the extraction end of the piston pump extends to the vacuum inner bag; the first one-way valve is arranged at the extraction end of the piston pump, and the second one-way valve is installed at the liquid discharging end of the piston pump. A tank cover is clamped to an opening of the water tank in a sealed mode, the piston pump is installed in the tank cover, and a stirrer is installed at the bottom of the water tank. By means of the comprehensive design of accurate quantification, convenient operation, sealed preservation and universal adaptation, the problems that a traditional adding mode is tedious in operation and inaccurate in proportion are perfectly solved, and an efficient and reliable cleaning solution adding solution is provided for household cleaning equipment.

1. The name of the design product: hydraulic piston pump (three columns). 2. The use of the design product: is used in the core components of the hydraulic system for the car. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

This invention discloses a pressure regulation and alarm method for a dual-piston pump type medical water jet, relating to the field of control technology, which can solve the problem of existing water jets having difficulty in automatic pressure regulation. The embodiments of this invention disclose a pressure regulation method for a dual-piston pump type medical water jet, including the following steps: adjusting the motor speed to a preset speed V0, obtaining the effective current value I of the motor; obtaining the target current I0 corresponding to the preset speed V0 based on several sets of relationships f(V, I); calculating the difference between the target current I0 and the effective current value I, and comparing it with a preset threshold; if the absolute value of the difference is less than the preset threshold, maintaining the motor speed; if the absolute value of the difference exceeds the preset threshold, and I is greater than I0, reducing the motor speed; if the absolute value of the difference exceeds the preset threshold, and I is less than I0, increasing the motor speed; using the changed motor speed as the new preset speed V0, repeating steps S1 to S3 until the difference between the target current I0 and the effective current value I is less than the preset threshold.

The utility model discloses a multi-path piston pump automatic putting system which comprises a main valve body, a pump cover assembly is arranged on the main valve body, and a plurality of flow channels are arranged on the pump cover assembly. A piston driving assembly is arranged in the main valve body, an electromagnet control assembly and a bidirectional motor assembly are further arranged in the main valve body, and the electromagnet control assembly comprises a double-row switching gear set body; the piston driving assembly comprises a double-layer middle partition plate, and transmission gear assemblies are arranged on the two sides of the double-layer middle partition plate. Each transmission gear assembly comprises a driving gear, first vertical racks arranged in pairs are arranged on the double-row switching gear set body, and second vertical racks are arranged on the driving gears; the bidirectional motor assembly drives the double-row switching gear set body to rotate when working, and the electromagnet control assembly controls the double-row switching gear set body to move when working. According to the utility model, the piston driving assembly can be driven to work through a single motor, so that a function of putting multiple paths of wash supplies is realized; and the main valve body has a flushing function, so that each chamber is convenient to clean.

This invention discloses a self-lubricating mechanism for a two-dimensional piston pump spatial cam, comprising a pump body and a cam assembly. The pump body includes a piston shaft and a pump housing, with an end cap containing an oil chamber at one end of the pump housing. The piston shaft has a first flow channel communicating with the oil chamber of the end cap. The cam assembly includes a sleeve and a cam and a roller shaft disposed within the sleeve. The roller shaft has a second flow channel communicating with the first flow channel and a third flow channel communicating with the second flow channel. The third flow channel radially penetrates the annular end face of the roller shaft. The pump housing also has a fourth flow channel communicating with the inner cavity of the sleeve, and the other end of the fourth flow channel is connected to an outlet pipe connected to the end cap. Oil is input through the inlet pipe of the end cap, flows through the first, second, and third flow channels, and then enters the friction pair between the bearing and the cam for lubrication. The lubricated oil is discharged from the outlet pipe through the fourth flow channel, forming a complete self-lubricating mechanism. The self-lubricating process of this application does not require additional oil supply power to achieve the self-lubricating effect of the spatial cam.

This utility model relates to the field of plunger pump technology, providing a springless valve body assembly for a reciprocating plunger pump, including a valve body and a valve core. The valve core consists of two sets of repulsive magnetic components and guide bolts, with the magnetic components slidably fitted onto the guide bolts. This springless design effectively reduces wear, significantly improving pump stability and service life. It also reduces installation and disassembly frequency, making it more convenient to use. The magnetic components are reusable, reducing maintenance costs and extending service life. The second magnetic component uses a planar assembly method with the valve plate, effectively reducing the risk of high-temperature deformation of the valve plate, thereby greatly improving sealing performance. Made of high-strength materials, it possesses excellent pressure resistance and corrosion resistance.

The utility model provides a homogenizer with double plunger pumps, which comprises a first plunger pump, a second plunger pump, a material conveying pipeline and a homogenizing cavity group, and the material conveying pipeline comprises a feeding pipe, a three-way pipe, a first high-pressure three-way valve, a second high-pressure three-way valve and a third high-pressure three-way valve. The three-way pipe is connected to the feeding pipe, the first high-pressure three-way valve and the second high-pressure three-way valve The first high-pressure three-way valve is connected to the output end of the first plunger pump, and the second high-pressure three-way valve is connected to the output end of the second plunger pump. The first high-pressure three-way valve and the second high-pressure valve are respectively connected to a third high-pressure three-way valve, and the third high-pressure three-way valve is connected to the homogenizing cavity group through a pipeline. The two plunger pumps and the material conveying pipelines corresponding to the plunger pumps are arranged, and the corresponding high-pressure valves and the corresponding one-way valves are arranged on the material conveying pipelines, so that the overall flow of the homogenizer is increased, and meanwhile, the stability and the controllability during material conveying are also improved.

The invention relates to a hydraulic control circuit (11) for an orienting actuator (14) for orienting fan blades of a turbojet engine, the circuit (11) comprising an oil reservoir (17) and an axial piston pump (18) comprising a tiltable plate (23), as well as a control chamber (24) and a compensation chamber (27) for increasing the tilt of the plate (23) when the pressure inside these chambers increases, the pump (18) being supplied by the reservoir (17) and having its outlet configured so as to be able to be connected by a supply line (19) to one of the chambers (12, 13) of the orienting actuator (14), the other chamber of the orienting actuator (14) being connected to the reservoir (17), this control circuit comprising a valve (42) controlled by a computer (FADEC), which valve (42) allows the outlet of the pump (18) to be connected to the reservoir (17) in order to deactivate this pump (18).

This utility model relates to the field of piston assembly technology, and more particularly to an assembly auxiliary device for a motorcycle piston upper pump. It includes an assembly table, a cylinder, and a pressure plate. The cylinder is mounted on the assembly table, and the pressure plate is mounted on the cylinder's telescopic rod. The device also includes a pressure detector and two warning devices. The pressure detector and two warning devices are electrically connected to the pressure detector. The pressure detector monitors the cylinder's pressing force in real time. When the pressure exceeds or falls below a set threshold, the control module within the pressure detector triggers the warning devices, causing them to illuminate and sound an alarm. This alerts the operator to adjust the pressure and check the assembly status, ensuring assembly quality and preventing cylinder damage due to overload.

The invention relates to the technical field of aluminum alloy for aerospace, and discloses an aluminum alloy punching machine for aerospace, which is characterized in that liquid outlet structures are respectively arranged on the inner wall of a female die and the outer wall of a male die, the bottom of a piston pump is communicated with two one-way valves, one one-way valve is used for controlling liquid discharge, the one-way valve is horizontally arranged, and the other one-way valve is used for controlling liquid discharge. According to the device, the piston pump drives the fluorine coating containing the nano ceramic particles to be directly sprayed to an aluminum alloy forming part from liquid outlets in the female die and the male die, so that the aluminum alloy forming part can be formed, and the aluminum alloy forming part can be formed through the liquid outlets in the female die and the male die; and the fluorine coating is more uniformly covered, so that waste and covering dead angles of external spraying are avoided, meanwhile, the process of spraying the aluminum alloy from the outside is omitted, the machining process of the aluminum alloy is further simplified, and the stamping efficiency is improved.

The invention relates to a piston pump (1) for liquefied gases, such as hydrogen, comprising a degassing gas separation device (4) arranged between the suction chamber (2) and the degassing chamber (3), the separation device (4) comprising a main body (40) comprising at least one through-passage (41) connecting the suction chamber (2) and the degassing chamber (3), and a closing means (42) for closing the passage, the closing means (42) being configured to: - in a closed position (P0), close the passage when the degassing pressure is higher than the suction pressure; - in an open position (P1), open the through-passage (41) when the degassing pressure is lower than or equal to the suction pressure.

The invention relates to the technical field of dyeing machines, in particular to a novel fancy yarn ultra-low energy consumption dyeing machine which comprises a cylinder body and a dye liquor supply system. The driving device is used for driving a main shaft to rotate in the cylinder body; the yarn carrying rotary disc and the main shaft rotate synchronously, a plurality of yarn carrying shafts capable of rotating around the axis of the yarn carrying rotary disc are arranged on the yarn carrying rotary disc, and dye liquor flow channels which are communicated with one another are formed in the main shaft and the yarn carrying shafts. A dynamic centrifugal force field is combined with an inside-to-outside pulsating jetting technology, so that the cheese generates centrifugal force in the compound motion of revolution and rotation, and dyeing liquid is further thrown to fiber gaps in the outer layer of the yarn under the action of the centrifugal force while being jetted outwards from the inside of the yarn by a piston pump, so that the dyeing effect of the cheese is improved. A continuous acceleration field is overlapped in the spraying direction, air and old dye liquor in the yarn can be replaced more thoroughly, and new dye liquor is forced to complete permeation.

The utility model discloses a long-acting large-displacement oil lubrication plunger pump, and belongs to the technical field of plunger pump design and manufacturing. The long-acting large-displacement oil lubrication plunger pump further comprises a pair of electric cylinders fixedly connected to the left end face of the first right partition plate. The inner side end faces of the pair of second partition plates are fixedly connected with a pair of oil storage blocks correspondingly. The inner sides of the pair of second partition plates at the same height are slidably connected with sliding rods. A liquid channel is formed in the inner side of each sliding rod; each sliding rod is fixedly connected with the output end of the adjacent electric cylinder; a pair of second one-way valves is embedded in the two ends of the inner side of each liquid channel. A first one-way valve is embedded in the position, corresponding to the oil storage block, of each second partition plate. Two pairs of first one-way valves, two pairs of second one-way valves and two electric cylinders are arranged, so that two sliding rods move oppositely, hydraulic oil is continuously input into a pump outlet, long-acting large-displacement oil pumping is achieved, and meanwhile residual hydraulic oil on the inner side of an oil storage block can be used for oil lubrication.

The utility model discloses a horizontal piston pump which comprises a machine frame, a connecting frame, a first cylinder body, a first piston rod, a first piston block, an oil cylinder, a second piston rod, a connecting sleeve, a feeding pipe, a connecting pipe, a feeding one-way valve, a discharging one-way valve and a discharging pipe. A first piston block matched with the first cylinder body is arranged in the first cylinder body, and the first piston block is connected with a first piston rod; the first cylinder body is connected with the two connecting pipes, and the connecting pipes are connected with the feeding pipe and the discharging pipe through the feeding one-way valve and the discharging one-way valve respectively, so that when the first piston block moves, a medium is pumped into the first cylinder body all the time, and meanwhile, the medium is pumped out of the first cylinder body all the time; according to the device, a medium is pumped out all the time in the operation process, the stability and continuity of medium output are guaranteed, meanwhile, the medium pumping-out speed is increased, and the efficiency is improved.

The application discloses a method for producing polypeptide amino acids by high-temperature and high-pressure cracking of protein materials and a production device thereof. The method comprises the following steps: loading the protein materials into a sealed cooking pot; outputting 180-300 DEG C and 18-30 kg of treatment steam through combined regulation of a steam boiler, heat-conducting oil and a piston pump; and cracking the protein into polypeptides through pressure-keeping cooking and instantaneous pressure relief flash explosion. Different temperature and pressure parameters are adopted for bone, meat and plant materials. The treatment steam contains small droplets, which can prevent the material from being carbonized at high temperature. The polypeptide production time is shortened to 30-60 minutes, enzyme preparation is not needed, the raw material adaptability is high, waste heat recovery is realized, waste gas emission is reduced, and the method has the advantages of high efficiency, low cost and environmental protection.

The utility model provides a kind of efficiency performance test equipment of general EHB hydraulic ram pump, comprising: ram pump, the input end of the ram pump is connected with the output end of filter by normal pressure pipeline, the output end of the ram pump is connected with the input end of pressure sensor by high pressure oil circuit, the side of the ram pump is connected with shaft coupling by normal pressure pipeline, the side of the shaft coupling with the ram pump is connected with servo motor by normal pressure pipeline;This efficiency performance test equipment of hydraulic ram pump, low investment cost, manufacture is relatively simple, and general performance is strong.