111 results about "Pump chamber" patented technology

The present invention relates to an automotive pendulum-slider pump (10, 10') for providing pressurized lubricant. The automotive pendulum-slider pump (10, 10') includes a non-rotatable rotor housing (12); a rotatable rotor ring (20, 20') that rotates within the rotor housing (12) and surrounds a pumping chamber (25) having an intake opening (18) and an exhaust opening (19); a rotatable rotor hub (35) that is rotatably connected to the rotor ring (20, 20'); and a plurality of pendulum blades (30) arranged at equal angles on the circumference of the rotor ring (20, 20') and each blade (30) is pivotally hinged by a separate pendulum hinge (32) at the rotor ring (20, 20'). The vanes (30) divide the fluid in the pumping chamber (25) into multiple pumping compartments (40), wherein the pumping chamber (25) is equipped with an automatically switching pressure matching valve (50, 50') for pre-opening the fluid connection between at least one pre-openable pumping compartment (40B) and the discharge opening (19) just before the pumping compartment (40B) has reached the discharge opening (19). The pre-opening fluid connection provides pressure matching between the pre-openable pumping compartment (40B) and the discharge pressure to reduce noise emissions caused by pressure pulsations resulting from sudden pressure equalization that occurs when the pumping compartment (40) reaches the discharge opening (19).

The present invention provides a pump device that can prevent the air venting passage from being blocked by the thrust bearing. [Solution] The pump device 1 has a thrust bearing 13 positioned opposite the second radial bearing 12 at one end L1 in the axial direction of the rotor member 51. The rotor member 51 is provided with a through-hole 7 extending axially between the magnet 52 and the rotating shaft 10. The through-hole 7 communicates with the pump chamber 30 via a one-sided opening 73 that opens at the end face of one side L1 in the axial direction of the rotor member 51. The one-sided opening 73 comprises an inner circumferential portion 73A of the opening that is closed by the thrust bearing 13, and an outer circumferential portion 73B of the opening that opens on the outer side of the outer edge of the thrust bearing 13.

This application provides a triboelectric self-sensing piezoelectric pump for drug delivery, a flow monitoring device, and a method, relating to the field of fluid transport and flow monitoring. A first friction part of a triboelectric sensor is disposed on an actuating component, and a second friction part is disposed on the inner wall of the pump body. When the actuating component vibrates to control the change in pump chamber volume, driving liquid to flow out through the inlet channel and pump chamber from the outlet channel, the first friction part passively follows the actuating component in synchronous vibration, synchronously changing the gap between the first and second friction parts. An electrical signal corresponding to the vibration of the actuating component is output from the second friction part, and this electrical signal can be calibrated as the corresponding liquid flow rate. This enables long-term, continuous, and accurate flow monitoring of wearable piezoelectric pumps, thereby improving the drug delivery safety and control accuracy of wearable piezoelectric pumps used in medical applications.

This utility model discloses a flow guiding structure and a washing machine including the same, comprising a pump housing, a cover, and a flow guide plate. The cover is screwed onto the outlet of the pump housing, and the flow guide plate is movably connected to the outer surface of the pump housing, and the flow guide plate can be flipped over to cover the cover. When the flow guide plate is on the outside of the cover, it is locked and fixed to the pump housing; when the flow guide plate is flipped open, one end of the flow guide plate abuts against the outer surface of the pump housing. This utility model connects the flow guide plate to the pump housing in a flip-over manner, so that the flow guide plate is normally blocked outside the cover. Before unscrewing the cover, the flow guide plate must be opened first, and then the cover can be unscrewed. This prevents residual water in the pump chamber from flowing directly to the ground and causing the ground to become damp when the cover is unscrewed.

This invention relates to the field of pump body sealing technology, and more particularly to a method for sealing the high-speed drive shaft end of a gas-blocking vacuum pump. The technical solution is based on a sealing device comprising a pump chamber and a rotor. The rotor is driven by a drive motor via an input shaft and is located within the pump chamber. A bearing housing supports the input shaft. A main chamber tritium concentration monitoring gauge is located inside the pump chamber, and a side chamber tritium concentration monitoring gauge is located outside the bearing housing. A purge port connects to the shaft end sealing gap. A gas cylinder is connected to the purge port via a control valve. An AI controller is connected to the main chamber tritium concentration monitoring gauge, the side chamber tritium concentration monitoring gauge, the drive motor, the control valve, and each sensing element. This invention utilizes AI-driven closed-loop adaptive control to dynamically match operating conditions and adjust the blowing parameters, effectively blocking tritium diffusion and improving the accuracy and stability of leakage control in extreme environments.

Provided is a multi-stage double-shaft rotary pump and a multi-stage claw pump that can efficiently cool a multi-stage pump chamber and a rotor by air cooling or water cooling. The pump chamber is provided in multiple stages, has two rotary shafts (20A, 20B) and two rotors (21A, 21B, 22A, 22B) disposed in each stage of the pump chamber (11, 12), and has, in an inter-stage portion (30) disposed between a front-stage pump chamber (11) having a front-stage pump exhaust-side end wall (11a) provided with an exhaust port (11b) and a rear-stage pump chamber (12) having a rear-stage pump intake-side end wall (12a) provided with an intake port (12b), an inter-stage communication chamber (33) that communicates the exhaust port (11b) and the intake port (12b) at a middle in a left-right direction, a one-side inter-stage liquid cooling flow path (31) that enables cooling air or a coolant to flow from a lower side to an upper side on one side of the left-right direction, and a other-side inter-stage liquid cooling flow path (32) that enables cooling air or a coolant to flow from a lower side to an upper side on the other side of the left-right direction.

This invention discloses a centrifugal pump impeller structure for preventing clogging of chemical media containing solid particles, relating to the technical field of centrifugal pump impeller structures. It includes a centrifugal pump body with a pump chamber and an inlet and outlet chamber communicating with it. Adjustment chambers communicating with the outlet chamber are provided on both outer walls of the centrifugal pump body. A rotating shaft is rotatably mounted on the centrifugal pump body along the axis of the adjustment chamber. A double-suction impeller located within the pump chamber is detachably mounted on the rotating shaft. The double-suction impeller has multiple spirally arranged blades, with inlet channels for media passage formed between adjacent blades. By providing cylindrical protrusions on both sides of the double-suction impeller, and using a first air nozzle corresponding to the inlet channel and a second air nozzle corresponding to the outlet channel, along with a purging component to deliver high-pressure gas, active purging of the inlet and outlet channels is achieved. This allows for real-time cleaning of solid particle deposits on the blade surface, inlet and outlet channels, and in the gaps, preventing impeller clogging.

A wave-powered pump 100 is operable in a condition untethered from the seabed. The wave-powered pump 100 comprises an upper float assembly 110, a lower weight assembly 150 and a pump chamber 130 dispo

Pump for a washing machine, comprising a pump chamber with an inflow, an outflow and a pump chamber bottom, an impeller for guiding water in the pump chamber and optionally a plurality of guide vanes radially outside the impeller, which vanes are stationary and extend helically towards the pump chamber bottom. The pump is designed in the form of a centrifugal pump. According to the invention, at least one curved or bent guide vane is arranged on at least one guide vane or on a support ring below the impeller.

A liquid pump, comprising a housing (110). Provided inside the housing (110) are: a pump chamber (110a), provided with a liquid inlet (110a1) and a liquid outlet (110a2); a motor chamber (110b), provided on one side of the pump chamber (110a); a heat dissipation chamber (110c), provided on the outer peripheral side of the motor chamber (110b) and used for dissipating heat from the motor chamber (110b); and a liquid channel (110c11), provided between the pump chamber (110a) and the heat dissipation chamber (110c), the heat dissipation chamber (110c) being communicated with the pump chamber (110a) by means of the liquid channel (110c11), wherein heat dissipation fins are provided in the heat dissipation chamber (110c) and / or the motor chamber (110b). During operation of the liquid pump, under the action of a pressure difference, liquid in the pump chamber can flow into the heat dissipation chamber through the liquid channel for heat exchange, and the heat-exchanged liquid flows back from the heat dissipation chamber to the pump chamber through the liquid channel, so that the liquid circulates in a manner from high pressure to low pressure, thereby carrying away heat of the heat dissipation chamber.

This invention relates to the field of fireboat water pump installation technology, specifically to a method for installing a water-spraying propelled fireboat's water pump. The method includes: S1. Initially positioning the water inlet channel on the hull plate, allowing the outlet flange of the water inlet channel to extend into the pump chamber; S2. Placing a dummy pump fixture in the pump chamber, the dummy pump fixture including a dummy pump body, with dummy pump feet at the bottom of the dummy pump body. The dummy pump feet are first anchored to the outlet flange of the water inlet channel using locating pins, and then fixed with bolts; a dummy pump shaft, which is a round tube, is installed on the top of the dummy pump body; S3. Butt-welding the water inlet channel to the hull plate, monitoring the relative position changes of the dummy pump shaft and the steel wire in real time; S4. After welding the water inlet channel, marking the center line of the dummy pump shaft, disassembling the fixture from the outlet flange of the water inlet channel, replacing the fixture with the actual pump, and completing the water pump installation. This installation method avoids inaccurate positioning due to welding deformation of the water inlet channel causing the center line of the water inlet channel to shift, which in turn leads to the shift of the pump shaft center line, thus improving the positioning and alignment accuracy.

The embodiment of the application discloses a kind of water inlet valve automatic regulating pump house, the utility model discloses a pump room ground and bottom flow pipe, bottom flow pipe is installed in the upper end of pump room ground, the surface on pump room ground is equipped with support column, the front of support column is equipped with three groups of grooves, three groups of groove inside support column are equipped with the adjusting mechanism of the control three groups of bottom flow pipe water inflow, three groups of groove inside support column are equipped with the positioning mechanism of positioning adjusting mechanism, the upper surface of support column is equipped with protection mechanism, the water inflow end of bottom flow pipe is closed by the water flow of rising in pump house and triggers adjusting mechanism, to avoid subsequent pump house internal water level rising and cause subsequent pump house internal equipment to produce damage as far as possible, so improve the stability of subsequent pump house in the process of use;By elastic potential, the equipment of adjusting mechanism is positioned in the groove inside support column, to avoid subsequent adjusting mechanism internal equipment in the process of use and produce damage as far as possible.

The utility model relates to air compressor technical field discloses a low noise air compressor, including compressor body, the top of compressor body is provided with compression pump chamber, and the top of compression pump chamber is connected with air inlet pipe and air outlet pipe, make the air form spiral guide flow before entering compression pump chamber through setting up spiral air deflector and the structure of closed column, relieve the screeching noise caused by the sudden inrush airflow, through setting up the combination structure of expansion chamber, gather together chamber and perforated pipe in the air outlet end in proper order, form the exhaust path of " expansion - contraction - expansion", effectively slow down the sound wave impact in the high pressure air sudden release process, simultaneously, the flexible bellows and perforated plate cooperation sound absorbing material are embedded in the exhaust passage, realize multistage noise reduction, the rubber sheet is clamped for buffering connection vibration in the air filter chamber and air inlet pipe junction, sets up the rubber connecting seat in the bottom, further absorbs the structural vibration in the compressor operation.

This invention discloses a variable frequency energy-saving screw vacuum pump, relating to the field of screw vacuum pump technology. It includes an energy-saving device, a pumping chamber, an air inlet, an exhaust port, and a drive component. The drive component drives the male and female screws within the pumping chamber to rotate. The pumping chamber compresses and discharges air, gradually evacuating the working space into a vacuum. It can work in conjunction with a frequency converter. During the operation of the screw vacuum pump, the compression ratio and bypass channel opening can be dynamically adjusted according to the changing pumping requirements at different process stages, allowing it to operate within a more ideal working range. During the vacuum pump start-up and shutdown transition phase, the bypass channel is opened and the compression ratio is reduced to minimize wasted work. During the pumping phase, the bypass channel is closed, and a lower compression ratio reduces energy loss, thus achieving energy savings. During the stable operation phase, the compression ratio is increased to ensure pumping efficiency, thereby achieving adaptive matching for different operating conditions.

A double diaphragm slurry pump (7080) comprises: a pump body (8200) defining a vertical longitudinal axis (LA) and first (8201) and second (8202) pumping chambers; an inlet flow manifold (8203) and an outlet flow manifold (8204) coupled to the pump body; a first pump head (8230a) coupled to the body adjacent the first pumping chamber, the first pump head comprising a longitudinal flow bore (8231) separate from the first pumping chamber and fluidly coupled to the inlet and outlet flow manifolds, an upper air vent bore (8232), and a lower slurry exchange bore (8233), the upper air vent bore and lower slurry exchange bore each fluidly coupling the longitudinal flow bore in turn to the first pumping chamber; and an operating shaft (8240) coupled to a resiliently deformable diaphragm (8241) disposed in the first pumping chamber; wherein the shaft is moveable in a pump stroke to pump a fluid through the longitudinal bore of the first pump head and the first pumping chamber from the inlet flow manifold to the outlet flow manifold; and wherein the upper air vent bore (8232) is smaller in diameter than the lower slurry exchange bore (8233) such that air is preferentially ejected from the first pumping chamber rather than slurry during the pump stroke.

The invention relates to a device for dispensing a liquid from a container, comprising: - an inlet channel configured to be brought in fluid communication with the container; - a pump in fluid communication with the inlet channel, the pump including a pump chamber and a piston reciprocally movable in the pump chamber; - an inlet valve arranged between the inlet channel and the pump; - a buffer facing the pump and in fluid communication therewith; - a nozzle for dispensing the liquid, the nozzle in fluid communication with the pump and / or the buffer; and - an outlet valve arranged between the pump and / or buffer and the nozzle; wherein the buffer comprises an elastic buffer bag defining an expansible volume and extending at least substantially in alignment with the pump chamber. The invention further relates to a system for dispensing a liquid, comprising a container and a liquid dispensing device as described above connected thereto.

The present disclosure relates to a rotary vane pump (1) comprising a pump housing (2), a stator (14), a rotor (5), a plurality of vanes (12) housed in the rotor (5) so as to be displaceable in a radial direction, thereby delimiting a plurality of pump chambers (30) between the vanes themselves and the stator (14) and the rotor (5), wherein a radially inner cam surface (16) is provided on which the vanes (12) rest, wherein secondary chambers (32) are delimited between the cam surface (16) and the rotor (5) in the radial direction and between the vanes (12) in a circumferential direction, wherein the secondary chambers are assigned a suction inlet (36) and a pressure outlet (38).

A metering pump for integration into a container includes a pump housing having a pump chamber, a pump inlet, and a pump outlet. The pump chamber is defined by a pump chamber base and an elastically deformable pump dome. The pump housing is composed of at least a first pump housing portion and a second pump housing portion. The pump dome is a part of the first pump housing portion and the pump chamber base is a part of the second pump housing portion. In one example, a container includes the metering pump and an associated product dispenser.

This invention relates to the field of fluid machinery operation control, and discloses an intelligent control method and system for a high-wear-resistant amphibious self-priming mining pump. The method includes collecting time-series data of the drive motor current and pump chamber pressure, constructing a function mapping relationship; calculating the phase difference and time delay between the current change rate and the pressure change rate; tracking the change process of the synchronization discrimination index around the response mismatch trigger point to determine the duration and magnitude of the synchronization deviation; when the synchronization deviation simultaneously meets preset duration and magnitude conditions, it is determined to be a water inlet interruption state; after determining the water inlet interruption state, the current response recovery time and pressure response recovery time are extracted respectively, the recovery time difference between the two is calculated, and based on the synchronization discrimination index, a drive speed adjustment function is constructed, and the drive speed adjustment function is adjusted in stages to generate a target speed command. This invention has the advantage of improving the accurate identification capability of transient air suction states.

The present invention provides a diaphragm pump that can increase the flow path cross-sectional area of ​​the suction and discharge through-holes while preventing damage to the valve body. [Solution] The system comprises a diaphragm having a pump section, a pump chamber, an intake passage, a discharge passage, a drive mechanism that converts the rotation of a motor into reciprocating motion to deform the pump section, an intake valve 31, and a discharge valve 41. The discharge passage includes a discharge through-hole 33 that penetrates the valve holder 8. The discharge valve 41 has a valve body 44 that closes the discharge through-hole 33. The valve body 44 has a sealing surface 48 that is in close contact with the outer wall surface 8a of the valve holder 8. A recess 49 is formed in the portion of the sealing surface 48 that corresponds to the discharge through-hole 33.

This invention provides a gas ballast valve with automatic adjustment function, including an adjusting seat, valve stem, valve core, valve plate, base support, valve body, and spring. The adjusting seat is threadedly installed at the end opening of the valve body. The spring, valve core, and valve plate are located inside the valve body and sequentially pass through the valve stem. The two ends of the valve stem are threadedly connected to the adjusting seat and the base support, respectively. The valve core has multiple vent holes evenly distributed along its circumference. The two ends of the spring abut against the adjusting seat and the valve core, respectively. The spring force causes the valve core to contact the valve plate, and the valve plate to contact the base support. The bottom of the valve body is connected to the pump chamber, and an air inlet is provided on the side of the valve body. When the pressure difference between the upper and lower sides of the valve core is greater than the spring force, the valve core will move upward under the high pressure of the pump chamber, and the spring will be compressed. In this gas ballast valve with automatic adjustment function, the valve core moves upward under the high pressure of the pump chamber, reducing the valve plate preload and increasing the valve plate reset distance, thereby increasing the single opening time of the gas ballast valve and automatically increasing the gas ballast charging volume.

This utility model discloses an emulsion bottle and its press pump. The press pump includes a pump housing, a valve body, a connecting rod, a piston, a locking cap, a locking pin, a head cap, and an elastic element. The valve body is installed in the pump chamber of the pump housing and can open and close the bottom channel of the pump housing. The connecting rod includes a piston seat and an upwardly extending rod. The piston is movably fitted into the rod and the pump chamber. The inner wall of the locking cap has a locking protrusion. The locking cap is fixedly fitted into the top of the rod and its bottom can abut against the top of the piston. The outer wall of the locking pin has a spirally extending track groove and a bottom positioning groove and a top positioning groove located at the bottom and top of the track groove, respectively. The bottom of the locking pin is movably installed in the rod channel of the rod. The locking pin channel and the rod channel of the locking pin are connected. The locking protrusion of the locking cap protrudes into the track groove and can slide to the bottom positioning groove and the top positioning groove. The head cap is installed on the top of the locking pin. The head cap channel and the locking pin channel of the head cap are connected. The opposite ends of the elastic element abut against the pump housing and the piston seat, respectively.

Examples of devices, systems, and techniques for delivering liquid medicaments are disclosed. An example delivery pump device can include a chamber body defining a pump chamber, an inlet valve to receive a liquid medicament, and a hard stop. A plunger is configured with a plunger channel. A sliding fluidic member includes a needle coupling, a flow orifice, a face seal, and an anchored portion that can move within the pump chamber. A pump mechanism can be coupled to the anchored portion and operable to pull the anchored portion and the plunger toward the hard stop. Techniques can include determining a time to output a liquid medicament from a delivery pump device, generating a control signal to actuate the delivery pump device, applying the control signal to the pump mechanism, determining that the control signal is to be removed from the pump mechanism, and delivering the liquid medicament.

The disclosure relates to a handheld device for manual dispensing of food product, e.g. sauce, mayonnaise, ketchup, mustard, topping, etc., in fluid form. The device comprises a container made of food-grade material configured to be filled with food product to airtight contain food product and to enable food product to be discharged and to be refilled with food product when emptied of food product; an inner piston detachably arranged and slidable inside the container, an elongated housing configured to be securely held in one hand and be detachably attached with a first end to the container; a discharge valve nozzle; a handle; pressure means; a pump chamber, and a first check valve.

The invention relates to an electric centrifugal fluid pump (10) having a pump wheel (20) rotating about a vertical rotation axis (R), an electric drive motor (30) driving the pump wheel (20), and a pump housing (100) accommodating the pump wheel (20) and the electric drive motor (30), wherein the pump housing (100) comprises a pump chamber housing (110) having a pump chamber wall (110') defining a pump chamber (119), wherein the pump wheel (20) rotates in the pump chamber (119), a radial-axial fluid inlet passage (120) having a pump inlet opening flange (122) surrounding a pump inlet opening (12), and a tangential-radial outlet passage (130) having a pump outlet opening flange (132) surrounding a pump outlet opening (14), while the pump inlet opening flange (122) and the pump outlet opening flange (132) have a single linear fluid mounting axis (M), wherein the fluid mounting axis (M) is inclined with respect to the horizontal plane (xy) by a mounting axis angle (a) of at least 4°, and wherein the tangential-radial outlet passage (130) is located in a horizontal plane (xy) perpendicular with respect to the rotation axis (R).

A positive displacement pump system can include a fluid end block, which can be configured to provide a pumping chamber and control a flow of a fluid through the positive displacement pump system. The fluid end block can include a first cylindrical wall defining a plunger bore extending partially through the fluid end block and a second cylindrical wall defining a fluid conveying cross bore that intersects the plunger bore defining a bore intersection rim. A portion of the first bore intersection rim can include a first toroidal surface.

The subject of the invention is a rotary pump (10) for conveying a fluid, having a pump housing (16) forming a pump chamber (14), an impeller (18) arranged in the pump chamber (14) for conveying the fluid, a suction opening (26) arranged in the pump housing (16) for sucking the fluid into the pump chamber (14) by means of the impeller (18), and a non-return valve (52) arranged behind the impeller (18) in the pump housing (16) relative to the suction opening (26), which closes as a result of the fluid entering into the pump chamber and / or as a result of the prevailing air pressure in the pump chamber (14) and which, when open, enables air to escape from the pump chamber (14).