111 results about "Positive displacement pump" patented technology

The invention discloses a planetary structure type flexible gear ring diaphragm pump, and belongs to the technical field of pumps, the planetary structure type flexible gear ring diaphragm pump comprises a pump body, a motor assembly is arranged in the pump body, an output shaft of the motor assembly is connected with a sun gear, a plurality of planetary gears are rotatably connected in the pump body, a flexible gear ring is arranged in the pump body, and the planetary gears are meshed and matched with the sun gear and the flexible gear ring. A fluid chamber seat is fixed at the end part of the pump body, a three-dimensional diaphragm is fixed in the fluid chamber seat, a plurality of flexible diaphragm chambers are arranged in the three-dimensional diaphragm along the outer circumferential direction of the flexible gear ring, and one-way valve groups are arranged on the flexible diaphragm chambers; planetary transmission and the positive displacement pump principle are combined, controllable deformation of a flexible component is used for replacing a traditional rigid connecting rod or eccentric wheel mechanism, and a brand-new internally-balanced driving mode is provided for fluid conveying; compared with a traditional eccentric wheel driving diaphragm pump, stress of the planet wheels on the two sides is always in internal balance, the running stability and reliability are greatly improved, and the motor cost is optimized.

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 invention relates to a positive displacement pump, in particular a vane pump, for pumping a fluid for a consumer of a steering system, with a suction side and a pressure side. The positive displacement pump has at least one cam ring (2), a rotor (3), a drive shaft (4) with an axis of rotation (x), a plurality of vanes (5), a control plate (6a), an end plate (6b), and / or a cover (11). A cylindrical surface of the rotor (3) has slots extending at least approximately radially across the width of the cylindrical surface, in which the vanes (5) are slidably arranged, the vanes (5) being guided along the inner contour of the cam ring (2) when the rotor (3) rotates. The control plate (6a), the end plate (6b), and / or the cover (11) includes a rear vane channel (9) which interacts with rear vane spaces to press the vanes (5) against the cam ring (2). The control plate (6a) and the front plate (6b) respectively.The cover (11) encloses the cam ring (2) and the rotor (3) axially between them. A sealing surface (10) is defined by the contact surface of one of the end faces of the rotor (3) with the control plate (6a) and with the end plate (6b) or the cover (11), wherein the sealing surface (10) extends radially over a sealing section (10a), in particular between the drive shaft (4) and the rear wing channel (9). According to the invention, the sealing section (10a) of at least one of the sealing surfaces (10) increases in the direction from the suction side to the pressure side, such that the sealing surface (10) is narrower in the radial direction at the transition from the pressure side to the suction side than at the transition from the suction side to the pressure side.

A material calculator for a truck to deliver a predetermined quantity of brine per mile driven by the truck for a known route of miles independent of and proportional to truck speed, wherein the truck carries a known number of gallons of brine and a known number of pounds of salt. The material calculator has a processor accepting entry values of route miles to be driven, number of times the route of miles is to be driven, number of gallons of brine carried by the truck, and the number of pounds of salt carried by the truck. The processor has software for calculating dispensing of the brine and salt so that each is exhausted when the route is completed. A hydraulic pump pumps hydraulic fluid to a variable flow positive displacement pump to implement the calculated number of gallons of brine per mile to be dispensed for the known route.

To provide a thermal decomposition device that separates gas in either a thermal decomposition part or a residue discharging part which discharges residue from the thermal decomposition part more securely, by which a gas volume coexisting with residue can be reduced on a post-stage of the residue discharging part.SOLUTION: A thermal decomposition device 1 comprises: a thermal decomposition part 20 which receives and thermally decomposes raw resin; a thermally decomposed gas separation part A which separates thermally decomposed gas generated by thermal decomposition in the thermal decomposition part 20; a gas treatment part 100 which treats thermally decomposed gas sent through the thermally decomposed gas separation part A; and a residue discharging part 30 which discharges undecomposed residue generated in the thermal decomposition part 20. The residue discharging part 30 includes a gear pump (positive displacement pump) 60 which absorbs and ejects undecomposed residue from an outlet part 23f of the thermal decomposition part 20.SELECTED DRAWING: Figure 2

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.

An electric propulsion machine for propelling a boat. The electric propulsion machine includes a motor provided in an upper portion of the electric propulsion machine, a propeller shaft provided in a lower portion of the electric propulsion machine, a propeller provided in the propeller shaft, a drive shaft extending in an upper-lower direction and configured to transmit rotation of the motor to the propeller shaft, and a first non-positive displacement pump provided in the propeller shaft and configured to supply cooling water to the motor, the cooling water cooling the motor.

The utility model relates to a double-channel fluid adjustable fixed flow ratio device which comprises two unpowered rotary displacement pumps, one of the two rotary displacement pumps takes first fluid as pushing power, and the other rotary displacement pump takes second fluid as pushing power. The output shafts of the two rotary displacement pumps are connected through a common speed change device, so that the two rotary displacement pumps operate at a determined rotation speed ratio, and the two fluids are conveyed at a determined flow ratio; the rotary positive displacement pump is provided with two sets of rotating parts, each set of rotating part comprises a waist wheel, a waist wheel shaft and a synchronous gear, and the waist wheel shaft and the synchronous gear are coaxially arranged. The two mutually connected rotary positive displacement pumps run at a set rotating speed ratio and fixed inlet and outlet pressure, so that the constant flow ratio of two fluids is ensured, additional power input is not needed, pure mechanical matching is adopted in the whole process, a complex automatic control system is not needed, the operation process is simplified, and the cost is reduced.

The present application relates to an American Society of Mechanical Engineers (ASME) Bioprocessing Equipment (BPE) compliant continuous stirred tank reactor (CSTR) array designed for continuous chemical, pharmaceutical, and biotechnological applications. Each array features two to five CSTRs incorporating a comprehensive recirculation and output flow system with a positive displacement pump, a three-way recirculation diverter valve, and control valves for precise management of output and waste allowing handling of solutions, suspensions, and mixtures of fluids, solids, and gases. Additional features support easy maintenance and real-time process monitoring, enhancing operational flexibility and control. This CSTR system is tailored to meet stringent industry standards and improve process efficiency.

Tinting machine (1) for metering, dispensing and mixing tinting pastes to prepare a paint of a desired colour or quality. The tinting machine comprises a plurality of dispense units (8), each dispense unit comprising a container (4) for holding a tinting paste and a pump (9). The dispense units are selectively movable to a dispense position. The tinting machine further comprises an actuator (20) engaging a selected one of the dispense units when it is in the dispense position. The actuator comprises a main gripper (40) for engaging the pump for fast dispensing, and a secondary gripper (50) for engaging the pump for accurate dispensing.

Described herein are embodiments of a drive head for use with positive displacement pumps. In one embodiment, a drive head for use with a pump comprises a central shaft having a first end and a second end; first and second drive rod connection points coupled to the central shaft proximate the first and second ends, the first and second drive rod connection points being located radially outside of a centerline of the central shaft; first and second drive rods coupled to the first and second drive rod connection points; and a central support member coupled to the central shaft between the first and second drive rod connection points.

To provide a non-positive displacement pump capable of reducing slide resistance between a pump case and an impeller and improving pump performance.SOLUTION: An impeller 40 has a plurality of blade parts 62 and a plurality of through-flow paths 63 formed in a circumferential row radially inward of an outer peripheral surface 40a. A pump case 41 has a bracket 45, an inlet 42, a suction port 53 formed in the inlet 42, and a discharge port 48 formed in the bracket 45. An outside recess part 73 having an annular shape when viewed from a rotational axis direction is formed on a second slide contact surface of the inlet 42 radially outward of the blades parts 62 and the through-flow paths 63 and at a position overlapping with the outer peripheral surface 40a of the impeller 40 in the rotational axis direction.SELECTED DRAWING: Figure 4

This invention, entitled "An Built-in Power Device, a Dexterous Finger, and Its Applications," belongs to the field of robotic dexterous hand technology. The technical problems it aims to solve are: existing robotic dexterous fingers suffer from problems such as external power devices, complex structures, large size, low power density and slow response due to the need for reducers in motor drives, poor stiffness and easy wear of tendon-wire transmissions, large return gaps, unstable positioning and grasping, and difficulty in directly and effectively driving joint rotation through the micro-displacement of piezoelectric ceramics. The key technical solution is: a built-in power device consisting of a piezoelectric ceramic power system and a hydraulic transmission system. The piezoelectric ceramic utilizes its inverse effect to achieve direct electro-mechanical conversion, providing mechanical power to the hydraulic transmission system. The hydraulic pump in the hydraulic transmission system is a reciprocating positive displacement pump, which provides pressurized oil to the hydraulic circuit through the periodic change of the working chamber volume.

Embodiments of the present disclosure relate to techniques, processes, devices or systems for pump devices. In one approach, a wearable drug delivery device may include a reservoir configured to store a liquid drug, the reservoir including a housing including an outer wall defining an interior chamber, a sealing member, and a slit through the housing, wherein the sealing member is configured to seal the slit. The wearable drug delivery device may further include a delivery pump device including a drive mechanism coupled to the reservoir for driving the liquid drug out of the reservoir, the drive mechanism including a piston head disposed within the interior chamber of the housing, and a lead screw coupled to a drive nut, wherein the drive nut comprises a blade adjacent the piston head, and wherein the blade is positionable through the slit of the housing.

The positive displacement pump comprises a shell, two partition pieces, a main shaft, a pump set and a motor assembly, and the shell is provided with a liquid inlet and a liquid outlet; the two partition pieces are oppositely arranged, a mounting chamber is formed between the two partition pieces, the first partition piece and the shell form a liquid inlet cavity communicated with the liquid inlet, and the second partition piece and the shell form a liquid outlet cavity communicated with the liquid outlet; the main shaft is fixedly arranged between the two partition pieces, the pump set comprises an inner gear rotationally arranged on the periphery of the main shaft in a sleeving mode and an outer gear meshed with the inner gear, the inner gear and the outer gear are eccentrically arranged, the first partition piece is provided with a liquid inlet channel, and the second partition piece is provided with a liquid outlet channel. The liquid inlet, the liquid inlet cavity, the liquid inlet channel, the pump set, the liquid outlet channel, the liquid outlet cavity and the liquid outlet form a first fluid path; the motor assembly is arranged in the mounting chamber and comprises a rotor and a stator fixedly arranged in the mounting chamber, the rotor is arranged on the periphery of the outer gear and fixedly connected with the outer gear, and the structure of the pump is more compact.

Embodiments of a high-pressure, high power, reciprocating positive displacement fluid pumping system and methods are included. The system may include a high-pressure, high power, reciprocating positive displacement pump including a pump plunger, a fluid end block assembly, and a fluid cover. The fluid end block assembly may include a fluid end block body, a suction port, a discharge port, a pump bore positioned in and extending through the fluid end block body, and a fluid chamber positioned in the fluid end block body and in fluid communication with each of the suction port, the discharge port, and the pump bore. The fluid chamber has an open end portion, and the pump plunger may be positioned to move in the pump bore to pressurize one or more fluids in the fluid chamber. The fluid cover includes a monolithic body having a first portion and a second portion, the first portion being received in the open end portion and sealably engaged with the fluid end block body, the second portion being mechanically connected to the fluid end block body.

1. The name of this design product: retaining component. 2. Purpose of this design product: Used to fix components in holes at the fluid end of, for example, a positive displacement pump. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

Systems and methods for measuring stress in a rock mass using sleeve fracturing are provided. A system for measuring stress in the rock mass includes an expandable sleeve insertable into a borehole formed in the rock mass and operable to apply a radially outward force against a wall of the borehole by expansion of the sleeve. A positive displacement pump is operatively connected to the sleeve and is operable to deliver a liquid to the sleeve at a constant flow rate to cause expansion of the sleeve. A pressure sensor is operable to measure a pressure of the liquid. A pressure recorder is operatively connected to the pressure sensor for recording the pressure of the liquid.

To provide a washing machine capable of simply and efficiently washing powder and granular material such as nickel powder or slurry thereof with a small work load.SOLUTION: A filtering and washing machine for powder and granular material represented by nickel powder suitably having a mean particle size of 200nm or less produced by a liquid phase method or a slurry thereof includes a Buchner funnel 1, a positive displacement pump 4 suitably including a reciprocating pump such as a diaphragm pump connected to an extraction nozzle of the Buchner funnel 1 via a pipe 3, and a flexible hose 5 represented by a blade hose connected to a discharge side of the positive displacement pump 4, and is preferably mounted on a truck 6.SELECTED DRAWING: Figure 1

The present application relates to an American Society of Mechanical Engineers (ASME) Bioprocessing Equipment (BPE) compliant continuous stirred tank reactor (CSTR) array designed for continuous chemical, pharmaceutical, and biotechnological applications. Each array features two to five CSTRs incorporating a comprehensive recirculation and output flow system with a positive displacement pump, a three-way recirculation diverter valve, and control valves for precise management of output and waste allowing handling of solutions, suspensions, and mixtures of fluids, solids, and gases. Additional features support easy maintenance and real-time process monitoring, enhancing operational flexibility and control. This CSTR system is tailored to meet stringent industry standards and improve process efficiency.

This rotary compressor is provided with a casing (11), cylinders (41, 42) disposed inside the casing, pistons (61, 62) that rotate eccentrically inside the respective cylinders, a shaft (81) connected to the pistons (61, 62), and having a cavity (81a) inside, a pipe (85, 185, 285, 385) disposed inside the cavity (81a) and spaced from a wall of the cavity (81a), an upper bearing (32) disposed above the corresponding cylinder and pivotally supporting the shaft, a lower bearing (31) disposed below the corresponding cylinder and pivotally supporting the shaft, a rear muffler (34) disposed below the lower bearing, and a positive displacement pump (50) attached to the rear muffler to discharge oil between the pipe and the wall.

A tubing assembly is provided that can comprise a plurality of tubes or lumens that can be disposed within a head of a peristaltic pump. The tubing assembly can provide a flow rate or volume capacity that is generally equal to or greater than that achieved with a comparable prior art tube while operating at higher pressures than that possible using the prior art tube. Further, in accordance with some embodiments, the tubing assembly can achieve a longer working life than a comparable prior art tube, and the load on the pump motor can be reduced such that the pump life is increased and / or a larger pump motor is not required to achieve such advantageous results.

Systems are provided for an engine fuel delivery system for vehicles under test. In one example, a fuel delivery system includes a bulk fuel storage tank to house bulk fuel at low pressure and an on-board fuel tank to house smaller quantities of pressurized fuel to be fed to a vehicle propulsion system. The fuel delivery system further includes a positive displacement pump to pressurize fuel from the bulk fuel storage tank and feed fuel to the on-board fuel tank. A plurality of valves and sensors are further included with an arrangement of fuel lines to monitor and direct fuel flowing in the fuel delivery system.

Plug removal and installation tools and methods of operating such to remove suction port plugs and discharge port plugs from a fluid end on a pump (e.g., hydraulic fracturing positive displacement pump) and to insert new plugs are disclosed. The plug removal tool includes a reaction bar assembly, a drive assembly, and a threaded rod assembly. The plug removal tool may be operated by rotating the drive assembly using a high torque, powered impact tool to reduce the time, labor, and fatigue associated with manually removing plugs from a pump using a traditional manually operated plug removal tool. The drive assembly is rotatable independently of the threaded rod assembly and reaction bar assembly. Rotation of the drive assembly results in linear movement of the threaded rod assembly to extend and retract the threaded rod assembly relative to the drive assembly and reaction bar assembly.

A pump assembly for a dental cleaning appliance includes a positive displacement pump including a fluid chamber and a fluid displacement member which is moveable in a linear direction relative to the fluid chamber, and a drive for actuating the pump to draw fluid into the fluid chamber through a fluid inlet. An energy storage device converts kinetic energy generated during actuation of the pump by the drive into potential energy, and stores the potential energy. A cam is connected to the drive for rotation relative to the fluid displacement member. The cam has a ramp extending about the fluid displacement member which is engaged by a cam follower connected to the fluid displacement member. As the cam moves relative to the fluid displacement member, the cam follower moves along the ramp to actuate the pump to draw fluid into the fluid chamber, and beyond the end of the ramp to enable the energy storage device to use the stored potential energy to actuate the pump to urge fluid from the fluid chamber.

Method for operating a device (1) for providing a liquid additive, comprising at least one suction point (17) for extracting liquid additive from a tank (2), a valveless delivery line (6) extending from the suction point (17) to a delivery unit (3), and a valveless positive displacement pump (4), wherein the positive displacement pump (4) is configured to pump the liquid additive from the tank (2) via the suction point (17) along the delivery line (6) to the delivery unit (3), wherein the positive displacement pump (4) has at least one seal (19) of the delivery line (6) which can be moved along the delivery line (6) for pumping the liquid additive, comprising at least the following steps: a. Determining an operational stop of the device (1); b. Determining the position (45) of the seal (19) within the positive displacement pump (4); and c. Changing the position (45) of the seal (19) if the position (45) of the seal does not correspond to a designated parking position (44), wherein the positive displacement pump (4) has a rotary drive (8) and a movable pump element (9), wherein the movable pump element (9) is moved for conveying in accordance with a rotary motion (32), characterized in that barbs (40) are provided on the movable pump element (9) which can interlock when the movable pump element (9) is moved with a rotary motion (32) against the conveying direction (5) and the barbs (40) are locked in the park position (44) after step c).

The invention relates to the field of rotor displacement pumps, and discloses a rotor displacement pump with a single-channel air inlet and outlet structure, which comprises a rotor displacement pump main body, a plurality of air outlets are formed in the rotor displacement pump main body, a plurality of air inlets are formed in the rotor displacement pump main body, and air outlet single-channel assemblies are arranged on the outer sides of the air outlets. An air inlet single-channel assembly is arranged on the outer side of the air inlet, the air outlet single-channel assembly comprises an air outlet shell, and a plurality of first bolts are arranged in the air outlet. According to the invention, through the mutual cooperation of the second piston, the second spring, the second through hole, the first piston, the first spring, the first through hole, the first connecting cavity and other structures, the air inlet and outlet process can be automatically adjusted according to the pressure change in the pump and in the pipe, the device can adapt to different pressure working conditions, can normally work in a high-pressure or low-pressure environment, and is high in universality and adaptability; the pump can be kept stable under different working conditions, and faults and damage caused by pressure fluctuation are reduced.

Systems and methods described herein provide composite slug-bearings to support rotating shafts and provide for adaptable pump configurations in a positive-displacement pump. A main bearing surface is configured to make direct contact with the rotating shaft and may be in the form of a rolling element bearing, plain journal bearing, or flanged journal bearing. A slug houses the main bearing surface and serves to occupy volume within the pump housing. The slugs are also used to locate and / or position the bearing within the housing, which will position the shafts. Multiple composite slug-bearings may be interchangeably located within the gear chamber of a pump for proper shaft placement. The composite slug-bearings also affect the volumetric displacement of the pump. The size of the slug is selected to allow relatively smaller gears to operate within a relatively larger housing while still maintaining the minimal clearances that are required for positive-displacement machines.

The disclosed apparatus, systems and methods relate to fluid distribution systems. The fluid distribution systems being made up of a plurality of positive displacement pumps disposed on a fluid distribution manifold and proximate to the tank and the point of product discharge. The system optionally has a valve system for precision control of fluid discharge.

The disclosed embodiments relate to techniques, processes, devices, or systems for pump devices. In one approach, a wearable drug delivery device includes a reservoir configured to contain a fluid, the reservoir including a housing, the housing including an outer wall defining an interior chamber, and a drive mechanism for expelling the fluid from the reservoir. The drive mechanism includes a plunger received within the interior chamber of the reservoir, a lead screw extending from the plunger, and a clutch mechanism in threaded engagement with the lead screw. The clutch mechanism is configured to allow the lead screw to pass through the clutch mechanism when disengaged, and configured to grip the lead screw and rotate the clutch mechanism to advance the lead screw and the plunger into the reservoir when engaged.