22results about "Oscillating piston pumps" patented technology

A spherical puffing pump for an ice cream machine and an air inlet device thereof. The spherical puffing pump includes a spherical pump body, a clamping plate and an air inlet valve. A liquid feeding hole of the spherical pump body is connected to a milk slurry tank to feed milk slurry. The air inlet valve is connected to a channel of the liquid feeding hole to introduce air. A liquid discharging hole is connected to a liquid inlet of a refrigerating cylinder. A pump seat is fixed on the ice cream machine. An end portion of the pump seat protrudes from an inner wall of the tank. A cylinder of the spherical pump body is connected to the end portion through the clamping plate. A main shaft of the spherical pump body is connected to a motor shaft through a connecting shaft for power transmission. The puffing rate is adjusted according to the size of the air inlet hole and the rotating speed of the motor.

The invention relates to a rotary piston pump (1) comprising in a spherical inner chamber (3) of a pump housing (2) with suction and pressure sides, a pair of rotary pistons (4, 5) in the form of universal-joint forks (6, 7) and a cross (8), between said forks (6, 7). The forks (6, 7) of the rotary pistons (4, 5) mesh with the cross (8) between them and form four pump chambers of variable volume when the rotary pistons (4, 5) and the cross (8) between are rotated. Each rotary piston (4, 5) is attached centrally to a hollow support shaft (13, 13', 14, 14') through a conical joint (10) and is fixed in place with a bolt joint (16) extending through a cavity (15) of the support shaft, where said support shaft is equipped with bearings (11, 12) and sealed.

The utility model provides a variable displacement engine oil pump, which is characterized in that a structure with a shaft function and an eccentric ring are directly integrally formed, a rotating shaft boss is integrally formed on the outer peripheral wall of the eccentric ring structure, a rotating shaft groove matched with the rotating shaft boss in size is arranged at the corresponding position of the side wall of an inner cavity of a pump shell main body, and the groove bottom of the rotating shaft groove is in running fit with the rotating shaft boss. And a certain moving space is reserved between the opening side of the rotating shaft groove and the rotating shaft boss, so that the rotating shaft boss can swing in the rotating shaft groove within a certain range. By adopting the design, the rotating shaft and the eccentric ring are directly combined into an integral structure, so that tedious operation steps during mounting of the rotating shaft are avoided, the mounting position of the rotating shaft does not need to be manually debugged specially, the assembling procedures of the variable displacement engine oil pump are greatly reduced, and manual operation can be directly and automatically implemented in the assembling process to replace manual operation. The utility model further provides a vehicle comprising the variable displacement engine oil pump.

A magnetic driver generates a magnetic field that rotates about an axis and induces nutation in a disc with an array of magnets (wobble plate). The magnetic driver can be a drive disc with an array of magnets and rotated by a drive motor, or can be electromagnetic coils sequentially energized, to provide the rotating magnetic field. The wobble plate nutates about the axis of the rotating magnetic field but is constrained from rotating about the axis. The wobble plate can be enclosed in a pump housing where nutation of the wobble plate causes pumping of a fluid to occur, such as in an implanted Left Ventricular Assist Device (LVAD) or a Total Artificial Heart (TAH). Driven in reverse, an input pumping fluid may induce nutation of the wobble plate which in turn induces rotary motion of a drive disc that drives a generator or a motor / generator.

The invention concerns a rotary machine with a spherical piston, comprising a housing (1) whose walls delimit a chamber having a spherical surface (1.1) in its central part. The chamber, delimited by the spherical surface (1.1), contains two rotors (2, 3) with spherical outer surfaces, each mounted rotatably around its own axis (L1, L2), which intersect and form an obtuse angle (α) between them, at the symmetry plane of the housing. The chamber, delimited by the spherical surface (1.1), between the rotors (2, 3), contains a piston composed of two parts (4, 5). The first piston part (4) is connected to the first rotor (2) by means of support arms (16, 17) attached to the first rotor (2) and by means of bearings of the first piston part (12, 13) located at the ends of the support arms (16, 17) and mounted in the first piston part (4), wherein the rotation axis of the bearings coincides with the axis of the rotating surface (L3) of the first piston part (4), and the second piston part (5) is connected to the second rotor (3) by means of support arms (18, 19) attached to the second rotor (3) and by means of bearings of the second piston part (14, 15) located at the ends of the support arms (18, 19) and mounted in the second piston part (5), wherein the rotation axis of the bearings coincides with the axis of the rotating surface (L4) of the second piston part (5). Additionally, the piston parts (4, 5) are connected by a piston part coupling (20), wherein the piston part coupling (20) for the piston parts (4, 5) ensures mutual rotary motion of the piston parts (4) and (5) around an axis being perpendicular to axes (L3) and (L4) of the rotating surfaces (4.1), (5.1) of the piston parts (4, 5) within a small angle. In one embodiment, the first chamber surface (2.2) of the first rotor (2), the second chamber surface (2.3) of the first rotor (2), the first chamber surface (3.2) of the second rotor (3), and the second chamber surface (3.3) of the second rotor (3) are provided with cooling elements (21) that improve heat exchange between the compressed gas and the rotor parts (2) and (3). In one embodiment, the contact surface (4.2) of the first piston part (4) and the contact surface (5.2) of the second piston part (5) are provided, in the area located further from the centre of the spherical surface (1.1) of the housing (1), with cooling elements for the piston parts (22), which improve heat exchange between the compressed gas and the piston parts (2, 3). The chamber, delimited by the spherical surface (1.1) of the housing (1), is divided into separable chambers (V1, V2, V3, V4), of which the first half (V1, V3) is delimited by the first chamber surface (2.2) and second chamber surface (2.3) of the first rotor (2), the spherical surface (1.1) of the housing (1), the rotating surface (4.1) of the first piston part (4), and the surface (5.2) of the second piston part (5). The second half of the chambers (V2, V4) is delimited by the first chamber surface (3.2) and second chamber surface (3.3) of the second rotor (3), the spherical surface (1.1) of the housing (1), the rotating surface (5.1) of the second piston part (5), and the contact surface (4.2) of the first piston part (4), and the rotors (2, 3) are coupled to each other via a gear transmission.

A hydraulic pump system comprises a high-pressure line (10), a low-pressure line (12), and at least two pump units (200a, 200b, 200c). Each pump unit comprises a cylinder space (14a, 14b, 14c), a piston (16a, 16b, 16c) arranged in the cylinder space, and a chamber (18a, 18b, 18c) contained within the cylinder space and having a volume limited by the piston. Further, the piston can be brought to recurring reciprocating motion with respect to the cylinder space so that the volume of the chamber simultaneously decreases for producing volume flow, and increases for receiving volume flow, respectively. The valve arrangement (22a, 22b, 22c) controls the fluid communications so that in a first state, the chamber is, in turn, in fluid communication with the high-pressure line (10) when the volume of the respective chamber is simultaneously decreasing, and in a second state, the chamber is in fluid communication with the low-pressure line (12) when the volume of the respective chamber is simultaneously increasing. This system enables efficient control of the flow and pressure of hydraulic fluid in various applications.

The application belongs to the field of pump equipment, and relates to a wear-resistant swing rotor pump. The swing rotor pump comprises a pump body, a main shaft accommodated in the pump body, a front rotor cavity and a rear rotor cavity arranged in the pump body, swing rotor parts arranged in the front and rear rotor cavities and connected with the main shaft. In the use process, most of the impurity particles are taken away with the medium in the crescent-shaped working cavity. Even if the rotor ring or the cylinder is scratched, the damage at a certain position only affects the sealing performance of the angle, and does not affect the sealing of the next angle. The wear resistance of the pump body is improved. Meanwhile, the left-right symmetrical double-cylinder four-cavity structure is adopted, the volume is expanded, the axial forces acting on the rotor ring are offset, the gap between the cylinder and the rotor ring and the gap between the rotor ring and the center cylinder are all 0.02mm-0.04mm, the friction between the cylinder and the rotor ring is avoided, and the long-term use effect of the pump is ensured.

A swing pump for hot melt adhesive, relating to the field of pump technology, includes a pump body, a swing component, a drive source, and a heating unit. The pump body has a swing chamber and a medium flow channel communicating with the swing chamber. The swing component is swingably disposed within the swing chamber. The power output end of the drive source is connected to the swing component for driving the swing component to swing back and forth within the swing chamber, thereby pushing the medium to flow in the medium flow channel. The heating unit is used to heat the medium flowing to the swing chamber. By using swing motion instead of linear motion to push the medium, the pump avoids the defects of linear motion sealing, such as the large stroke, large contact area, and strong adhesive adhesion, which easily lead to sealing failure. This effectively reduces the risk of adhesive leakage and achieves continuous adhesive dispensing.

A moving wall multiphase compressor-pump-expander system utilizes the relative rotation of a ring, a central body, and a housing with respect to each other, where the ring is concentrically positioned in a channel between the central body and the housing. The ring has a series of vanes passing through it and pivotally attached on each side to the walls of the channel in the housing to compress a fluid. The channel has low friction walls on either side to reduce the friction between the vanes the walls. The system is able to compress and expand fluids and as such can function as a pump.

A magnetic driver generates a magnetic field that rotates about an axis and induces nutation in a disc with an array of magnets (wobble plate). The magnetic driver can be a drive disc with an array of magnets and rotated by a drive motor, or can be electromagnetic coils sequentially energized, to provide the rotating magnetic field. The wobble plate nutates about the axis of the rotating magnetic field but is constrained from rotating about the axis. The wobble plate can be enclosed in a pump housing where nutation of the wobble plate causes pumping of a fluid to occur, such as in an implanted Left Ventricular Assist Device (LVAD) or a Total Artificial Heart (TAH). Driven in reverse, an input pumping fluid may induce nutation of the wobble plate which in turn induces rotary motion of a drive disc that drives a generator or a motor / generator.

The utility model discloses a small -size compressor, including front end cover, back end cover and cylinder body. The middle of cylinder body forms a air chamber, is equipped with rotor in the air chamber, and the outer wall of rotor is connected with the inner wall of cylinder body through an movable blade, and the cross section of blade both ends is circular and sets up, and keeps blade both ends gradually concave to the middle, and the width keeps gradually contractive narrow setting. This small -size compressor sets up the eccentric block and the rotating shaft of separable, realizes the eccentric swing of rotor, and realizes the position restriction of rotor with the articulated blade. Through setting up the blade structure of two ends bigger middle narrower, can realize the gas of blade both sides not to be connected, guarantees the sealing of air chamber, improves the compression efficiency of gas in compressor. Simultaneously cooperates the structure of blade, can improve the connecting strength between rotor and cylinder body, improves the stability of whole compressor compression gas process.

The invention relates to a method for reducing friction during the start-up of a refrigerant compressor (2), in particular a thermal machine (1) or a thermal system (1) for household, transport or industry, wherein the refrigerant compressor (2) has a compression piston (20) that is linearly movable back and forth in a compressor cylinder (10) for drawing in, compressing and expelling a refrigerant (5), and the compression piston (20) is mounted in the compressor cylinder (10) by means of a gas pressure sliding guide (30), characterized in that the gas pressure sliding guide (30) is supplied with pressurized refrigerant (5) essentially immediately before the start-up of the refrigerant compressor (2).

The invention discloses a pneumatic swing piece type metering pump which comprises a metering pump body, a swing air cylinder and an angle adjusting metering device. A partition block is arranged in a cylinder body of the metering pump, a swing shaft is arranged in the center of the cylinder body, and blades are arranged on the swing shaft. A swing cylinder is arranged at the upper part of the metering pump; a rotating shaft of the swing cylinder is connected with the swing shaft; an angle adjusting and metering device is arranged between the metering pump and the oscillating cylinder, and the angle adjusting and metering device controls the output flow of the metering pump by controlling the oscillating angle of the oscillating cylinder, so that accurate metering work is realized. The explosion-proof metering device is simple in structure, easy to operate, accurate in metering and excellent in explosion-proof performance, and the market requirements are met to the maximum extent.

Orbital piston compressor (1) comprising a cylinder (3) defined by a cylinder inner wall (2), a movable orbital piston (4) arranged within the cylinder (3), and an eccentric shaft (15) driving the orbital piston (4), wherein a gap (6) between the outer surface (5) of the orbital piston (4) and the cylinder inner wall (2) is adjustable in discrete positions by means of an eccentric, wherein the eccentric has a compensating eccentric (9) with an outer part (10) within which an inner part (11) connected to the eccentric shaft (15) is arranged, wherein the outer part (10) has an inner coupling surface (12) designed as an internal toothing and the inner part (11) has an outer coupling surface (13) designed as an external toothing, so that the outer part (10) engages positively in the inner part (11) via the toothing (14), and wherein the rotational movement of the eccentric shaft (15) is transferred to the compensating eccentric (9).

The patent discloses a micro spherical pump, a cylinder (5) has a hemispherical surface and a lower end of the hemispherical surface extends to form an inner cylindrical surface (501), a rotating sleeve hole (503) is connected to the inner spherical surface (502) of the cylinder (5), a piston pin seat (303) and a rotating disc pin seat (603) are matched to form a cylindrical hinge; an axis of the cylindrical hinge is arranged on an upper end surface of a rotating disc body and passes through the center of the upper end surface; a liquid inlet and outlet channel (604) is arranged on the rotating disc body; a distribution disc (7) is fixed to the lower end of the cylinder (5); a driving rotating disc shaft (601) is rotated, first and second working chambers (100 and 200) with alternating volumes are formed between the upper end surface of the rotating disc (6), the two side surfaces of the piston pin seat (303) and the inner spherical surface (502); the micro spherical pump has the advantages that the structure is simplified, the number of spherical matching pairs is reduced, and the processing and manufacturing are convenient; and the planar distribution structure is realized in the spherical pump.

According to the swing rotor compressor and the design method thereof, the swing rotor compressor comprises an air cylinder and a swing rotor, a circular cavity is formed in the air cylinder, the swing rotor is arranged in the circular cavity, the main body contour of the swing rotor is circular, and the main body contour is connected with a rotor tail swing extending out; a tail swing groove extending out is formed in the position, corresponding to a rotor tail swing of the swing rotor, of a circular cavity of the air cylinder, a crescent cavity between the swing rotor and the air cylinder is a working cavity, and an air inlet and an air outlet are formed in the positions, on the two sides of the tail swing groove, of the air cylinder respectively. An eccentric shaft is arranged in a body of the swing rotor, under driving of the eccentric shaft, one point of the outline of the body of the swing rotor makes contact with the inner wall face of the circular cavity of the air cylinder all the time, and the molded surface of the tail swing groove is matched with or meshed with the molded surface of the rotor tail swing. According to the swing rotor compressor, the leakage of the rotor compressor through the slip sheet and the abrasion between the slip sheet and the rotor can be reduced, and the reliability and the use efficiency of the rotor compressor are improved.

A hydraulic pump system comprises a high-pressure line (10), a low-pressure line (12), and at least two pump units (200a, 200b, 200c). Each pump unit comprises a cylinder space (14a, 14b, 14c), a piston (16a, 16b, 16c) arranged in the cylinder space, and a chamber (18a, 18b, 18c) contained within the cylinder space and having a volume limited by the piston. Further, the piston can be brought to recurring reciprocating motion with respect to the cylinder space so that the volume of the chamber simultaneously decreases for producing volume flow, and increases for receiving volume flow, respectively. The valve arrangement (22a, 22b, 22c) controls the fluid communications so that in a first state, the chamber is, in turn, in fluid communication with the high-pressure line (10) when the volume of the respective chamber is simultaneously decreasing, and in a second state, the chamber is in fluid communication with the low-pressure line (12) when the volume of the respective chamber is simultaneously increasing. This system enables efficient control of the flow and pressure of hydraulic fluid in various applications.

A double-suction double-discharge positive displacement rotor pump comprises pump bodies, a main shaft and a rotor, the two pump bodies are arranged in a bilateral symmetry mode and connected with each other, each pump body is composed of a main body and a pump cover, and a water inlet hole and a water outlet hole are symmetrically formed in the upper portion of each pump body. A C-shaped working cavity is formed in a main body of each pump body, the two ends of each C-shaped working cavity are communicated with a water inlet hole and a water outlet hole respectively, rotors are eccentrically installed on the main shaft through eccentric sleeves and bearings respectively, the eccentric directions of the rotors are opposite, and C-shaped sleeves on the rotors are inserted into the working cavities respectively. The outer ends of the rotors are respectively connected with rotor glands; quincunx inner teeth are arranged on the inner edge of a limiting sleeve fixed in the pump cover, quincunx outer teeth are arranged on a limiting disc fixed on the outer edge of the rotor, and the quincunx outer teeth are eccentrically meshed with the inner teeth; sealing rubber discs are arranged between the two ends of each pump body and the rotor and the rotor gland respectively, and a plurality of circles of rubber sealing ribs are arranged on the sealing rubber discs. The pump has the advantages of being good in sealing effect, high in working efficiency, long in service life, capable of eliminating pulsation and good in pressurizing effect.

The present invention relates to a method for evacuating at least two external vacuum chambers i and j (20, 20′) with a vacuum pump (10), in particular a rotary vane vacuum pump (10), whereby the vacuum chamber i (20) is evacuated from the initial pressure p02(i) to a final pressure p12(i) via the second inlet (2) during an evacuation time tp2(i) and at the same time the vacuum chamber j (20) is evacuated via the first inlet (1) from the initial pressure p01(j) to a final pressure p11(j) during an evacuation time tp1(j).A rotary vane vacuum pump (10) designed for this purpose is characterized in that it has two inlets (1, 2) and one outlet (3), the two inlets (1, 2) being arranged offset at an angle to one another, and is also subject matter of the present invention, as is its use in the method according to the invention and a vacuum packaging machine which comprises a rotary vane vacuum pump (10) designed in this way.

The magnetic driver generates a magnetic field that rotates about an axis and causes nutation in a disk (wobble plate) having an array of magnets. The magnetic driver may be a drive disc having an array of magnets and rotated by the drive motor, or may be an electromagnetic coil sequentially energized to provide a rotating magnetic field. The wobble plate nutates about the axis of the rotating magnetic field, but is constrained from rotating about the axis. The wobble plate may be enclosed in a pump housing where nutation of the wobble plate causes pumping of fluid, such as in an implanted left ventricular assist device (LVAD) or total artificial heart (TAH). The reversely driven input pumping fluid may cause nutation of the wobble plate, which in turn causes rotational movement of the drive disk that drives the generator or motor / generator.