1853results about "Multi-cylinder pumps" patented technology

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

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

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

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

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

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

The present application discloses a coaxially integrated servo motor pump with integrated drive control functions, comprising a motor pump housing, a controller housing, and an electrical connector. The motor pump housing is provided with a blind hole, a first cavity for accommodating a plunger pump assembly, and a second cavity for accommodating a servo motor assembly, wherein the plunger pump assembly and the servo motor assembly are connected via a rotating shaft. The controller housing is connected to one end of the motor pump housing, and a drive controller is provided within the controller housing. The blind hole communicates with the second cavity, and the electrical connector is sealed and connected to the blind hole, and the electrical connector is electrically connected to the servo motor assembly and the drive controller. The distribution plate and the sealing assembly are respectively sealed with both ends of the motor pump housing. Cooling is achieved through a cooling oil channel, which connects from one end of the motor pump housing near the plunger pump assembly to the second cavity and then divides into two paths, one path passing through the center of the rotating shaft, and the other path connecting to the first cavity and passing through the distribution plate. The coaxial integration of the drive control functions is achieved, and the cooling effect is good.

A counterflow guide includes a body with a first end surface, a second end surface positioned opposite the first end surface, and a sidewall connecting the first end surface to the second end surface. The counterflow guide also includes a discharge passage configured to direct a fluid to discharge through the body, from a discharge inlet to a discharge outlet. The discharge inlet is formed in the sidewall and the discharge outlet is formed into the first end surface.

A fluid end includes a first sleeve associated with a plunger bore, a second sleeve assembly associated with a suction bore, and a packing sleeve retainer positioned at the plunger bore to axially retain a packing sleeve of the first sleeve assembly within the plunger bore, the packing sleeve retainer being coupled to a front face of the fluid end. The fluid end further includes a suction ring positioned at the suction bore to axially retain a suction sleeve of the second sleeve assembly within the suction bore, the suction ring being coupled to a rear face of the fluid end.

A fluid end having a reciprocating plunger installed within. The plunger may have a bore formed therein, and a valve assembly attached to one end of the plunger. The valve assembly may engage a valve seat situated within the plunger. The plunger may contain a sleeve which engages part of the valve assembly. The fluid end may be connected to an inlet manifold which is situated above the fluid end. The inlet manifold may be situated on a power end. The fluid end may be made of a static section and a plurality of dynamic sections threaded therein.

A fluid end assembly comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each section comprises a housing containing a reciprocating plunger. One and only one packing seal is installed within the housing and surrounds and engages an outer surface of the plunger. A retainer compresses and holds the packing seal within the housing. The retainer is secured to the housing using a clamp, such that no threads are formed in the housing of the fluid end section and no threads are formed in the retainer.

A fluid end made of a housing and a plunger reciprocating therein. The plunger has a hollow bore formed therein, and a valve assembly situated on one end of the plunger. The plunger may have a sleeve situated within the bore that aids in the installation of the valve assembly. The plunger may have a second bore extending perpendicularly from the hollow bore. The first bore may be connected to an attachment piece which connects to a conduit. The conduit may then be connected to a manifold which is configured to provide a fluid to the plunger's bore. The housing may be made of a static section and a plurality of dynamic sections. The dynamic sections may thread into the housing. The static section may be made of two pieces to aid with installation of a dynamic seal.

A fluid end for use with a power end. The fluid end comprises a plurality of fluid end sections positioned adjacent one another. Each section includes a single horizontally positioned bore. A plunger is installed within the bore and includes a fluid passageway. Low-pressure fluid enters the bore through the plunger and high-pressure fluid exits the fluid end through an outlet valve installed within the bore. The intake of low-pressure fluid within the fluid end section is regulated by an inlet valve installed within the plunger. Low-pressure fluid enters the plunger through an inlet component attached to both the plunger and an inlet manifold.

The present invention relates to the technical field of plunger pumps, and in particular, to a plunger assembly and a plunger pump. The plunger assembly comprises a cylinder unit, a plunger unit and a slipper unit. The plunger unit is slidably inserted in the cylinder unit; a plunger cavity is formed between the end of the plunger rod of the plunger unit away from the plunger ball head and the cylinder unit; a weight reduction cavity in the plunger rod passes through to the end of the plunger rod away from the plunger ball head; a partition in the weight reduction cavity divides the weight reduction cavity into a buffer cavity and a connecting cavity; the connecting cavity is connected to the plunger cavity; the oil through hole in the plunger ball head is connected to the connecting cavity; a first shock-absorbing hole formed at one end of the partition near the plunger cavity is respectively connected to the buffer cavity and the plunger cavity; a second shock-absorbing hole at one end of the partition near the plunger ball head is respectively connected to the buffer cavity and the oil through hole; the slipper unit is spherically hinged with the plunger ball head; one end of the oil through hole passes through to the surface where the plunger ball head and the slipper unit fit. In this way, the problem of how to reduce pressure pulsation in the plunger assembly is solved.

A pumping system, comprising: a pump fluid end comprising a plurality of pump chambers, each pump chamber comprising a bore having a reciprocatable plunger disposed therein, a suction valve, and a discharge valve; a prime mover mechanically coupled to the fluid end [by a drivetrain] and configured to reciprocate the plungers; and a controller communicatively coupled to the prime mover, the fluid end, or both and configured to alert a user re a pump malfunction, initiate corrective action of the pump malfunction, or both in response to: (a) an indication of torque reversal during operation of the pumping system, (b) an indication of negative flow rate from the pump during operation of the pumping system, (c) an indication of leakage of (i) a single discharge valve in a 3-plunger pump or (ii) discharge valves associated with two plungers in adjacent firing order, or (d) any combination of (a)-(c).

A mobile pump system for pumping water for extinguishing with an auxiliary agent, and a method therefor. The mobile pump system includes a frame for housing the pump system, a booster pump arranged in the frame, a metering pump arranged in the frame for the purpose of adding an auxiliary agent to a water flow, and a drive configured to drive the booster pump and the metering pump. The metering pump is provided with a displaceable metering pump frame and coupling means for connecting the metering pump to a container of the auxiliary agent.

A fluid end made of a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section is made of a housing having a discharge bore and an intake bore formed therein. A fluid routing plug is installed within each housing and is configured to route fluid throughout the housing and between the discharge and intake bores. The fluid routing plug carries seals that engage sealing surfaces formed within the housing. A number of features, including the location of seals within bore walls and carbide inserts within valve guides, aid in reducing or transferring wear within each housing.

The invention provides an ultrahigh-pressure vertical plunger pump. The ultrahigh-pressure vertical plunger pump comprises a plunger pump base, a plunger pump body and a plunger pump cover. A transmission structure is arranged on the inner side of the plunger pump base, a receding hole communicated with an inner cavity of the plunger pump base is formed in the upper end of the plunger pump base, and the output end of the transmission structure extends into the receding hole. A water inlet hole is formed in the side wall of the plunger pump body, a high-pressure cylinder is arranged on the inner side of the plunger pump body, a water passing hole is formed in the side wall of the upper end of the high-pressure cylinder, a sealing bush is arranged in the high-pressure cylinder, a plunger shaft is slidably arranged on the inner side of the sealing bush, and the lower end of the plunger shaft is connected with the power output end of the transmission structure. An annular lubricating gap is formed between the sealing bush and the plunger shaft; a drainage channel is arranged on the inner side of the plunger pump cover, and a one-way valve structure is arranged at the joint of a water inlet of the drainage channel and an inner cavity in the upper end of the high-pressure cylinder. Compared with a sealing ring, the sealing bush has higher strength and higher wear resistance, and is not easy to wear in the use process.

The invention discloses a digital hydraulic pump controlled by a high-speed switch valve bridge. The digital hydraulic pump comprises a motor, a swash plate type axial plunger pump, a variable adjusting unit, a pressure compensation unit, a closed-loop control unit, an unloading unit and a filter. The motor is connected with the swash plate type variable displacement piston pump; the variable adjusting unit is connected with the swash plate type variable plunger pump; the pressure compensation unit is connected with the variable adjusting unit to carry out differential pressure compensation on the variable adjusting unit; the closed-loop control unit is connected with the variable adjusting unit and controls the output flow of the variable adjusting unit according to a feedback signal; the high-speed switch valve is subjected to pressure difference compensation through the pressure difference compensator, so that the flow of the high-speed switch valve is not affected by load changes any more, and output pressure fluctuation of the swash plate type variable displacement piston pump is reduced; a high-speed switch valve bridge serves as a pilot level, and digital accurate control over the output pressure of the hydraulic pump is achieved through a closed-loop control unit; the high-speed switch valves are connected in parallel, multi-stage flow output and differential flow control are achieved, and the control precision and the response speed of the digital hydraulic pump are improved.

A power end frame of a reciprocating pump includes a first ring, a second ring, and a plurality of connections extending between the first ring and the second ring. The first ring, the second ring, and the plurality of connections are integral with one another, and the plurality of connections comprises a plurality of struts that form a plurality of open cells between the first ring and the second ring.

Hydrostatic radial piston rotation machine comprising: an internal element and an external element coaxial and mounted to rotate relative to each other about an axis of rotation, one of these elements being a rotor and the other of these elements being a stator; the internal element comprising a cylinder block (10); the external element comprising a cam track. The machine comprises a drainage circuit which comprises, for at least one cylinder (11), an injection duct (26) passing through the wall of the cylinder (11), the injection duct (26) opening at one of its ends into the cylinder (11) through a port (27), and opening at the other of its ends, from the cylinder block (10), into a drainage space supplied with hydraulic fluid. Figure for the abstract: Fig.2

A ball support arrangement for a piston shoe arrangement (1), wherein the piston shoe arrangement (1) is configured to be provided in an axial piston machine, wherein the piston shoe arrangement (1) includes a piston body (2) having a ball shaped end (3) and a piston shoe (4), wherein the ball shaped end (3) is provided in the piston shoe (4), wherein the ball support arrangement is arranged between the piston shoe (4) and the balls shaped end (3). The objective of the present invention is to provide a ball support arrangement, which is easy to replace and low on maintenance. This objective is solved by a ball support arrangement, which is separate and replaceable, wherein at least a ball portion (5) of the ball support arrangement is configured to accommodate at least part of the ball shaped end (3).

The utility model provides a scheme of a three-plunger digital displacement pump based on a dynamic coupling actuating valve, which comprises three groups of flow distribution units, and each group of flow distribution units comprises a reciprocating plunger and two high-speed switch valves. The plungers are connected to the crankshaft through the connecting rods, in the rotating process of the crankshaft, the 120-degree phase difference is kept between the plungers, electrical energy consumption and throttling loss in the control process can be reduced, and the multi-plunger digital displacement pump can be expanded in the crankshaft direction according to requirements. The valve element of the check cartridge valve structure is lighter, and the switch valve has higher rated flow. The topological structure of the coupling iron core can significantly improve the transient mechanical property of the dynamic coupling actuator, and significantly reduces the operation time of the switching valve. A dynamic sealing system is converted into a static sealing system through the thin film sealing structure, the situation that magnetorheological fluid leaks and pollutes a hydraulic oil way can be completely avoided, and the motion resistance of the system is reduced.

Hydraulic fluid release valve assemblies are described herein. The hydraulic fluid release valve assemblies may include a hydraulic unit base with a hydraulic fluid return channel and a hydraulic fluid release valve that is at least partially inserted in the hydraulic fluid return channel. The hydraulic fluid release valve assembly may further include a driving assembly to contact with the hydraulic fluid release valve to apply a pushing force on the hydraulic release valve to open the hydraulic fluid release valve, and an electrically powered driver connected to the driving assembly, the electrically powered driver, when actuated, causes the driving assembly to move to apply the pushing force to the hydraulic fluid release valve.

The invention relates to the technical field of mechanical hydraulic pressure, in particular to a low-pulsation plunger pump with a dynamic variable flow distribution pre-compression angle, the low-pulsation plunger pump with the dynamic variable flow distribution pre-compression angle comprises a plunger pump, a shell and an adjusting piece, the plunger pump is fixedly connected with the shell, an oil distribution cover is fixedly connected in the shell, the oil distribution cover is rotatably connected with a flow distribution plate, and the flow distribution plate is fixedly connected with the shell. A blocking piece is fixedly connected to the surface of the valve plate, a groove is formed in the surface of the oil distribution cover, a push rod is slidably connected into the groove, the blocking piece is connected with the push rod in an inserted mode, the push rod is elastically connected with a limiting plate, the limiting plate is in threaded connection with the adjusting piece through a screw rod, and an oil return opening is formed in the groove and communicated with the interior of the shell. The valve plate has the beneficial effects that in a dynamic balance state, the elastic force of the spring and the hydraulic force are balanced in real time, so that the pre-compression angle is automatically adjusted along with the pressure of the oil discharge kidney-shaped hole, and the pressure transition process is always in an optimal state, so that the valve plate can adapt to the working condition change, and the flow pulsation is effectively inhibited and optimized.

A hydrostatic rotary machine includes (i) an inner element and an outer element which are coaxial and mounted with the ability to rotate one with respect to the other about an axis of rotation, one of these elements being a rotor and the other of these elements being a stator, (ii) a brake counter-disc which is mounted on the distribution hub, which extends radially around the distribution hub, and which is rotationally coupled to the outer element, (iii) a passive-braking piston designed to activate a brake under the effect of an elastic element and which is mounted with axial mobility with respect to the brake counter-disc, and (iv) a hydraulic brake-release chamber positioned between the brake counter-disc and the passive-braking piston.

The invention provides a hydraulic control pilot two-stage flow distribution static balance radial plunger hydraulic device and a working method, and relates to the technical field of radial plunger hydraulic devices. According to the scheme, the radial plunger hydraulic device is balanced through hydraulic control pilot two-stage flow distribution static force, flow distribution is controlled through external control pilot pressure, bidirectional rotation of a hydraulic pump motor and self-compensation after a valve plate is abraded are achieved by arranging an external control pilot oil way, and the service life is prolonged. In addition, by arranging the regular polygon driving type structure, regular polygon parts are additionally arranged between the crankshaft and the plunger, the transmission performance of the radial plunger pump is optimized, and friction force is reduced. By arranging the guide sleeve, the rubber cavity assembly and the return spring, the movement centering performance of the plunger can be effectively improved, leakage at the position of the plunger unit is reduced, and the complexity of the motor return device is simplified.

The invention relates to a high-concentration material pump (10) having two delivery cylinders (16, 18), the delivery pistons (34, 36) of which are rigidly connected via a common piston rod (30, 32) to the drive pistons (38, 40) of the associated drive cylinders (26, 28), a delivery operating mode being provided in which the delivery cylinders (16, 18) are driven in a push-pull manner, the conveying cylinders (16, 18) are arranged in order to convey high-concentration substances (58) from the hopper (14) into the conveying line (56) (50) via pipe adapters (24) which alternately connect the conveying cylinders (16, 18), and a cleaning operating mode is provided in which the conveying cylinders (16, 18) are arranged in the conveying line (56) (50). The conveying cylinders (16, 18) together occupy a hopper-side end position and the tubular adapter (24) is alternately connected between the two conveying cylinders (16, 18).

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 into each of which a reciprocally movable piston dips and which are each in flow connection with the suction conduit by way of an inlet channel and with the pressure conduit by way of an outlet channel. The inlet channel can be closed by an inlet valve and the outlet channel can be closed by an outlet valve. The second housing part includes a valve receptacle, and that the piston pump includes an outlet valve assembly, wherein the outlet valve assembly comprises an outlet part, which is inserted into the valve receptacle and forms all outlet valve seats.

The invention belongs to the related technical field of plunger pumps, and discloses a leakage-free oil-water separation type plunger pump which comprises a cylinder body, a lining, a large plunger, a small plunger and an elastic sealing piece. A third groove is formed in one end of the cylinder body, a first through hole is formed in the bottom face of the third groove in a penetrating mode, and the first through hole is used for containing the large plunger; one end of the bushing is arranged in the third groove; the small plunger is step-shaped, and a first step surface is formed on the small plunger; one end of the small plunger is positioned in the bushing, and the other end of the small plunger penetrates through the elastic sealing element and then is connected to one end of the large plunger positioned in the cylinder body; the first step face and the large plunger press the middle of the elastic sealing piece to form inner-layer sealing, the lining and the bottom face of the third groove press the outer edge of the elastic sealing piece to form outer-layer sealing, and the inner-layer sealing and the outer-layer sealing are jointly used for isolating a working medium and a lubricating medium which are located on the two opposite sides of the elastic sealing piece respectively. And oil-water mutual seepage is prevented.