CN111140458A - Single-cylinder double-feeding hydraulic piston pump - Google Patents
Single-cylinder double-feeding hydraulic piston pump Download PDFInfo
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- CN111140458A CN111140458A CN201911372842.9A CN201911372842A CN111140458A CN 111140458 A CN111140458 A CN 111140458A CN 201911372842 A CN201911372842 A CN 201911372842A CN 111140458 A CN111140458 A CN 111140458A
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- sludge cylinder
- valve body
- way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1087—Valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
- F04B9/105—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Actuator (AREA)
Abstract
The invention provides a single-cylinder double-feeding hydraulic piston pump which comprises a double-acting hydraulic oil cylinder and a sludge cylinder, wherein the double-acting hydraulic oil cylinder is provided with a piston rod of the double-acting hydraulic oil cylinder, the sludge cylinder is provided with a sludge cylinder piston, the piston rod of the double-acting hydraulic oil cylinder drives the sludge cylinder piston of the sludge cylinder to move back and forth, an upper discharge port one-way valve and a lower feed port one-way valve of the sludge cylinder are opened and closed alternately to finish feeding and discharging, and the reciprocating motion is carried out to pump materials.
Description
Technical Field
The invention relates to the field of sludge pumps, in particular to an energy-saving and environment-friendly single-cylinder double-feeding hydraulic piston pump.
Background
The hydraulic piston type sludge pump sewage pump in the current market adopts a hydraulic oil cylinder as a power cylinder to drive a working cylinder piston to move, an inlet and an outlet adopt tee joints, and two one-way valves are respectively installed as an inlet one-way check valve and an outlet one-way check valve; the inlet and outlet one-way valves are in an angle general form, namely the inlet and the outlet of the one-way valve are 90 degrees, and materials are easy to generate turbulence in the transmission process; a charging barrel of the working cylinder is not provided with a cooling system, and heat generated in the operation of equipment cannot be conducted and dissipated in time, so that a sealing element of the piston of the working cylinder is aged and loses efficacy; when the hydraulic oil cylinder is used as a power cylinder and is used for reversing, the installation position of the reversing device is fixed, and the collision between a piston and two end covers is easily caused due to the motion inertia and the hysteresis of a reversing valve.
Disclosure of Invention
The invention aims to provide a single-cylinder double-feeding hydraulic piston pump which is energy-saving and environment-friendly, high in operation efficiency, small in power loss, extremely low in suction and discharge damping, compact in size and convenient to mount, maintain and maintain.
In order to realize at least one purpose of the invention, the invention provides a single-cylinder double-feeding hydraulic piston pump which comprises a double-acting hydraulic oil cylinder and a sludge cylinder, wherein the double-acting hydraulic oil cylinder is provided with a piston rod of the double-acting hydraulic oil cylinder, the sludge cylinder is provided with a sludge cylinder piston, the piston rod of the double-acting hydraulic oil cylinder performs a back-and-forth movement to drive the sludge cylinder piston of the sludge cylinder to move back and forth, an upper discharge port one-way valve and a lower feed port one-way valve of the sludge cylinder are opened and closed alternately to complete feeding and discharging, and the materials are pumped by the back and forth movement.
In some embodiments, the sludge cylinder comprises a sludge cylinder three-way low-damping double-acting check valve and a sludge cylinder four-way low-damping double-acting check valve, the sludge cylinder three-way low-damping double-acting check valve and the sludge cylinder four-way low-damping double-acting check valve are arranged at the end of the sludge cylinder, wherein the upper discharge port check valve and the lower discharge port check valve of the sludge cylinder three-way low-damping double-acting check valve and the sludge cylinder four-way low-damping double-acting check valve are opened and closed alternately to complete feeding and discharging.
In some embodiments, the sludge cylinder comprises a sludge cylinder three-way valve body and a sludge cylinder four-way valve body, wherein the sludge cylinder three-way valve body is an integrated three-way valve, the inside of the upper opening of the sludge cylinder three-way valve body is a straight-through discharge outlet one-way valve, the sludge cylinder four-way valve body is an integrated four-way valve, the inside of the lower opening of the sludge cylinder four-way valve body is a straight-through feed inlet one-way valve, and the sludge cylinder three-way valve body of the sludge cylinder, the straight-through discharge outlet one-way valve of the sludge cylinder four-way valve body of the sludge cylinder and the straight-through feed inlet one-way valve are alternately opened and closed to complete feeding.
In some embodiments, the single-cylinder dual-feed hydraulic piston pump further comprises a discharge manifold and a feed shunt tube, the upper and lower ports of the sludge cylinder three-way valve body are respectively connected with the discharge manifold and the feed shunt tube through flanges, and the upper and lower ports of the sludge cylinder four-way valve body are respectively connected with the discharge manifold and the feed shunt tube through flanges.
In some embodiments, the single cylinder dual feed hydraulic piston pump further comprises an outlet manifold mounted to the outlet of each of the sludge cylinders, and a feed manifold mounted to the inlet of each of the sludge cylinders.
In some embodiments, the discharge manifold is connected with the discharge port of the sludge cylinder through a flange, and the feeding shunt pipe is connected with the feeding port of the sludge cylinder through a flange.
In some embodiments, the two ends of the sludge cylinder are provided with a three-way low-damping double-acting one-way valve and a four-way low-damping double-acting one-way valve, the three-way low-damping double-acting one-way valve is of an integrated structure and has an upper discharging one-way non-return function and a lower feeding one-way non-return function, and the four-way low-damping double-acting one-way valve is of an integrated structure and has an upper discharging one-way non-return function and a lower feeding one-way non-return function.
In some embodiments, the single-cylinder dual-feed hydraulic piston pump further comprises a discharge manifold and a feed shunt pipe, the sludge cylinder further comprises a sludge cylinder working cylinder, the three-way low-damping dual-acting one-way valve comprises a sludge cylinder three-way valve body, an upper port and a lower port of the sludge cylinder three-way valve body are respectively connected with the discharge manifold and the feed shunt pipe through flanges, and a middle port is connected with the sludge cylinder working cylinder.
In some embodiments, the middle port of the three-way valve body of the three-way low-damping double-acting check valve is connected with the sludge cylinder working material cylinder and is used as a rodless cavity end cover of the sludge cylinder working material cylinder.
In some embodiments, the three-way low damping double-acting one-way valve further comprises a sludge cylinder three-way valve body discharge port valve core, a sludge cylinder three-way valve body discharge port valve core seat, a sludge cylinder three-way valve body discharge port valve core gasket, a sludge cylinder three-way valve body feed port valve core and a sludge cylinder three-way valve body feed port valve core gasket, wherein the sludge cylinder three-way valve body discharge port valve core seat is installed in an upper port inner hole of the sludge cylinder three-way valve body, the sludge cylinder three-way valve body discharge port valve core is installed in an inner hole of the sludge cylinder three-way valve body discharge port valve core seat in a sliding fit manner, the sludge cylinder three-way valve body discharge port valve core gasket is installed on an inner hole step of the sludge cylinder three-way valve body below the sludge cylinder three-way valve body discharge port valve core, wherein the, the sealing gasket of the feed port valve core of the sludge cylinder three-way valve body is arranged on the step of the inner hole of the sludge cylinder three-way valve body below the feed port valve core of the sludge cylinder three-way valve body.
In some embodiments, the single-cylinder dual-feed hydraulic piston pump further comprises a discharge collecting pipe and a feed dividing pipe, the sludge cylinder further comprises a sludge cylinder working material cylinder, the four-way low-damping dual-acting check valve comprises a sludge cylinder four-way valve body, an upper port and a lower port of the sludge cylinder four-way valve body are respectively connected with the discharge collecting pipe and the feed dividing pipe through flanges, a middle port is connected with the sludge cylinder working material cylinder, and the other middle port is fixedly connected with the dual-acting hydraulic oil cylinder through a flange.
In some embodiments, the middle opening of the sludge cylinder four-way valve body of the four-way low-damping double-acting one-way valve is connected with the sludge cylinder working material cylinder through a flange and serves as a rod cavity end cover of the sludge cylinder working material cylinder.
In some embodiments, the four-way low damping double-acting check valve further comprises a sludge cylinder four-way valve body discharge port valve core, a sludge cylinder four-way valve body discharge port valve core seat, a sludge cylinder four-way valve body discharge port valve core gasket, a sludge cylinder four-way valve body feed port valve core and a sludge cylinder four-way valve body feed port valve core gasket, wherein the sludge cylinder four-way valve body discharge port valve core seat is installed in an upper opening inner hole of the sludge cylinder four-way valve body, the sludge cylinder four-way valve body discharge port valve core is installed in an inner hole of the sludge cylinder four-way valve body discharge port valve core seat in a sliding fit manner, the sludge cylinder four-way valve body discharge port valve core gasket is installed on an inner hole step of the sludge cylinder four-way valve body below the sludge cylinder four-way valve body discharge port valve core, wherein the sludge cylinder four-, the sealing gasket of the sludge cylinder four-way valve body feed port valve core is arranged on the inner hole step of the sludge cylinder four-way valve body below the sludge cylinder four-way valve body feed port valve core.
In some embodiments, the sludge cylinder further comprises a sludge cylinder working material cylinder and a sludge cylinder outer protection cylinder, wherein the sludge cylinder working material cylinder is sleeved in the sludge cylinder outer protection cylinder.
In some embodiments, the two ends of the sludge cylinder outer protection barrel are provided with cooling ports, an annular cavity is formed between the sludge cylinder working material barrel and the sludge cylinder outer protection barrel, and the two ends of the sludge cylinder working material barrel and the outer protection barrel are provided with sealing parts for supporting and sealing in a clearance fit mode.
In some embodiments, the sludge cylinder piston is in sliding sealing fit in the inner hole of the sludge cylinder working material cylinder, the sludge cylinder outer protection cylinder is sleeved on the excircle of the sludge cylinder working material cylinder, and the annular cavity is formed between the excircle of the sludge cylinder working material cylinder and two ends of the inner hole of the sludge cylinder outer protection cylinder.
In some embodiments, the sludge cylinder further comprises a sludge cylinder outer protection cylinder, the sludge cylinder working material cylinder is sleeved in the sludge cylinder outer protection cylinder, cooling ports are arranged at two ends of the sludge cylinder outer protection cylinder, an annular cavity is arranged between the sludge cylinder working material cylinder and the sludge cylinder outer protection cylinder, and sealing members are arranged at two ends of the sludge cylinder working material cylinder and the outer protection cylinder in a clearance fit manner to support and seal.
In some embodiments, the outer circle positioning step at the end part of the sludge cylinder three-way valve body is provided with a sealing piece and is installed in an inner hole at the end part of the sludge cylinder working material barrel for static sealing, wherein the sludge cylinder three-way valve body is connected with the end part of the sludge cylinder outer protection barrel.
In some embodiments, the outer circle positioning step at one end of the sludge cylinder four-way valve body is provided with a sealing piece and is installed in an inner hole at the end part of the sludge cylinder working material cylinder for static sealing, the sludge cylinder four-way valve body is connected with the end part of the sludge cylinder outer protection cylinder, and the inner hole at the other end of the sludge cylinder four-way valve body is provided with a sealing device and is in sliding sealing with the piston rod of the double-acting hydraulic oil cylinder extending into the hole of the sludge cylinder four-way valve body.
In some embodiments, wherein the single cylinder dual feed hydraulic piston pump further comprises a stroke adjusting reversing device mounted between the sludge cylinder and the dual acting hydraulic ram.
In some embodiments, wherein the double acting hydraulic cylinder includes a cylinder rear end cap flange, the stroke adjustment reversing device is mounted between the sludge cylinder and the cylinder rear end cap flange of the double acting hydraulic cylinder.
In some embodiments, the double-acting hydraulic oil cylinder comprises a cylinder rear end cover, the stroke adjusting reversing device comprises a first sealing guide sleeve, a first position sensor, a reversing valve rod, a position detection sensor, a second position sensor and a second sealing guide sleeve, the first sealing guide sleeve and the position sensor are mounted at the end part of the sludge cylinder, the second sealing guide sleeve and the second position sensor are mounted on the cylinder rear end cover of the double-acting hydraulic oil cylinder, the reversing valve rod is mounted in a sealing guide sleeve hole of the first sealing guide sleeve and the second sealing guide sleeve, and the position detection sensor is mounted on the reversing valve rod.
In some embodiments, wherein the sludge cylinder piston of the sludge cylinder and the dual acting hydraulic cylinder piston rod of the dual acting hydraulic cylinder are axially and radially fixed by a snap key, a self-sealing nut axially locks and seals.
In some embodiments, the sludge cylinder further comprises a sludge cylinder self-locking nut and a sludge cylinder clamp key, wherein the sludge cylinder piston is assembled at the end of the piston rod of the double-acting hydraulic oil cylinder, the sludge cylinder clamp key is clamped in a clamp key groove at the end of the piston rod of the double-acting hydraulic oil cylinder, and the sludge cylinder self-locking nut is screwed on an external thread at the end of the piston rod of the double-acting hydraulic oil cylinder.
Compared with the prior art, the invention has the following beneficial effects: the single-cylinder double-feeding hydraulic piston pump provided by the invention is provided with a double-acting hydraulic oil cylinder, a left sludge cylinder arranged at the left end of the double-acting hydraulic oil cylinder, a stroke adjusting reversing device arranged between the sludge cylinder and a flange of a rear end cover of the oil cylinder, a discharging collecting pipe arranged on the left sludge cylinder, and a feeding flow dividing pipe arranged on the sludge cylinder. The three-way low-damping double-acting one-way valve has an integrated structure, has the functions of upper discharging one-way non-return and lower feeding one-way non-return and serves as a rod-free cavity sealing end cover of the working material cylinder, and has the functions of upper discharging one-way non-return and lower feeding one-way non-return and serves as a rod cavity sealing end cover of the working material cylinder, and has the functions of sliding sealing with a double-acting piston rod extending into a hole of the double-acting single-way valve and connecting with a middle double-acting. The upper discharge port one-way valve and the lower feed port one-way valve are both in a straight-through structure, materials directly enter the sludge cylinder working material barrel from the feed flow dividing pipe through the straight-through lower feed port one-way valve, the movement distance is short without passing through other pipelines and elbows in the middle, the flowing direction is not changed, turbulent flow resistance is not generated, and the operation efficiency is low; the material directly gets into ejection of compact collecting pipe from work feed cylinder through straight-through type upper discharge gate check valve, and the centre need not to pass through other pipelines and elbow movement distance short and do not change the flow direction and do not produce the little operating efficiency height of torrent resistance. The effective strokes at two ends of the double-acting hydraulic oil cylinder can be adjusted by adjusting the installation positions of the four-way low-damping double-acting one-way valve body arranged at the right end of the sludge cylinder and the position sensors arranged on the oil cylinder end cover flanges, so that the pistons cannot contact with guide sleeves at two ends when the double-acting hydraulic oil cylinder moves back and forth at a high speed, and cylinder collision caused by large movement inertia is avoided. The working material barrels made of different materials can be conveniently replaced according to different abrasion conditions or material properties of the working material barrels; cooling media are introduced into cooling ports arranged at two ends of the outer protection cylinder to enter the annular cavity, a large amount of heat energy generated by back-and-forth movement friction during working between the sludge cylinder working material cylinder and the sludge cylinder piston is taken away, aging failure of the sludge cylinder piston sealing element is effectively delayed, the working material cylinder suspends on the sludge cylinder piston, cylindricity errors and assembly coaxiality errors caused by working material cylinder processing can be effectively compensated, eccentric wear of an inner hole of the working material cylinder and the sludge cylinder piston cannot be caused, and the service lives of the working material cylinder, the piston and the piston sealing element are prolonged.
Drawings
FIG. 1 is a perspective view of a single cylinder dual feed hydraulic piston pump in accordance with a preferred embodiment of the present invention.
Fig. 2 is a perspective view of the single cylinder dual feed hydraulic piston pump according to the above preferred embodiment of the present invention.
Detailed Description
For the purpose of promoting an understanding of the invention, reference will now be made in detail to the embodiments illustrated in the drawings. The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are intended to be illustrative only and not limiting, and other obvious modifications will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention. Based on the understanding of the principle of the present invention, those skilled in the art can obtain other drawings and other embodiments without creative effort, and the scope of the present invention is covered by the claims.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
Fig. 1 to 2 show a single-cylinder dual-feed hydraulic piston pump according to a preferred embodiment of the present invention, which has high operating efficiency, low power loss, low suction and discharge damping, compact size, convenient installation, maintenance, energy saving and environmental protection.
The single-cylinder double-feeding hydraulic piston pump comprises a double-acting hydraulic oil cylinder 100 and a sludge cylinder 200, wherein the sludge cylinder 200 is arranged at the end part of the double-acting hydraulic oil cylinder 100. In this preferred embodiment of the invention, the sludge cylinder 200 is mounted at the left end of the double acting hydraulic ram 100. It will be appreciated by those skilled in the art that in other embodiments, the sludge cylinder 200 may be mounted at the right end of the double acting hydraulic cylinder 100, and the invention is not limited in this respect.
Specifically, the double-acting hydraulic oil cylinder 100 comprises a cylinder barrel 101, a cylinder barrel flange, a double-acting hydraulic oil cylinder piston rod 102, a buffer plunger, a guide sleeve 103, a cylinder rear end cover 111 and a cylinder rear end cover flange 107. Further, the piston rod 102 of the double-acting hydraulic oil cylinder and the buffer plunger are assembled in the cylinder barrel 101, the guide sleeve 103 is installed at the left end of the cylinder barrel 101, the flange 107 of the rear end cover of the oil cylinder is installed at the right end of the cylinder barrel 101, the piston of the piston rod 102 of the double-acting hydraulic oil cylinder is in sliding sealing fit with the inner hole of the cylinder barrel 101, and the piston rod of the piston rod 102 of the double-acting hydraulic oil cylinder is in sliding sealing fit with the inner hole of the guide sleeve 103.
Specifically, the single-cylinder dual-feed hydraulic piston pump further comprises a discharge manifold 400 and a feed shunt pipe 500, and the discharge manifold 400 and the feed shunt pipe 500 are installed on the sludge cylinder 200. Further, the discharge collecting pipe 400 is connected with the discharge hole of the sludge cylinder 200 through a flange, and the feeding shunt pipe 500 is connected with the feed hole of the sludge cylinder 200 through a flange.
Specifically, the sludge cylinder 200 comprises a sludge cylinder piston 201, a sludge cylinder three-way low-damping double-acting one-way valve 202, a sludge cylinder four-way low-damping double-acting one-way valve 203, a sludge cylinder working material cylinder 204, a sludge cylinder outer protection cylinder 205, a sludge cylinder self-locking nut 206 and a sludge cylinder clamp key 207.
The sludge cylinder three-way low-damping double-acting check valve 202 and the sludge cylinder four-way low-damping double-acting check valve 203 are arranged at the end of the sludge cylinder 200. Preferably, in this preferred embodiment of the present invention, the sludge cylinder three-way low damping double acting check valve 202 is disposed at the left end of the sludge cylinder 200, and the sludge cylinder four-way low damping double acting check valve 203 is disposed at the right end of the sludge cylinder 200. The piston rod 102 of the double-acting hydraulic oil cylinder returns to the left and the right to drive the piston 201 of the sludge cylinder at the left end to move back and forth, the upper discharge port one-way valve and the lower discharge port one-way valve of the three-way low-damping double-acting one-way valve 202 of the sludge cylinder and the four-way low-damping double-acting one-way valve 203 of the sludge cylinder are alternately opened and closed to finish feeding and discharging, and the reciprocating motion is carried out to achieve the purpose of pumping materials. It will be understood by those skilled in the art that the orientation of the three-way low damping double acting check valve 202 and the four-way low damping double acting check valve 203 are provided by way of example only, and the invention is not limited thereto.
Further, the sludge cylinder piston 201 is installed at the left end of the double-acting hydraulic oil cylinder piston rod 102, the sludge cylinder piston 201 and the double-acting hydraulic oil cylinder piston rod 102 are axially and radially fixed through a clamping key, and a self-sealing nut is axially locked and sealed. The sludge cylinder piston 201 is in sliding sealing fit in an inner hole of the sludge cylinder working barrel 204. Preferably, in the preferred embodiment of the present invention, the sludge cylinder locking key 207 is locked in the left end locking key groove of the piston rod 102 of the double acting hydraulic cylinder, and the sludge cylinder self-locking nut 206 is screwed on the left end external thread of the piston rod 102 of the double acting hydraulic cylinder.
Preferably, in this preferred embodiment of the present invention, the sludge cylinder piston 201 is sleeved on the positioning steps of the double-acting hydraulic cylinder piston rod 102 of the double-acting hydraulic cylinder 100, and is in clearance fit, and a sealing member is arranged in the middle for supporting and sealing, and a certain coaxiality deviation compensation is allowed. The sludge cylinder clamping key 207 fixes the sludge cylinder piston 201 at the positioning step of the double-acting hydraulic oil cylinder piston rod 102 in an axial and radial direction. The inner hole of the sludge cylinder self-locking nut 206 is designed as a step blind hole, the sludge cylinder clamping key 207 is fixed on the excircle of the sludge cylinder clamping key 207 in a step sleeved mode, the inner hole is an internal thread and is screwed with an external thread of the double-acting hydraulic oil cylinder piston rod 102 to further fix the sludge cylinder piston 201, a sealing ring seal is arranged on the annular surface, attached to the sludge cylinder self-locking nut 206 and the sludge cylinder piston 201, of the sludge cylinder self-locking nut 206, materials in a charging barrel cannot permeate into the joint of the sludge cylinder piston 201 and the double-acting hydraulic oil cylinder piston rod 102 to cause pollution and corrosion.
Specifically, the sludge cylinder three-way low-damping double-acting check valve 202 of the sludge cylinder 200 comprises a sludge cylinder three-way valve body 208, a sludge cylinder three-way valve body discharge port valve core 209, a sludge cylinder three-way valve body discharge port valve core seat 210, a sludge cylinder three-way valve body discharge port valve core sealing gasket 211, a sludge cylinder three-way valve body feed port valve core 212 and a sludge cylinder three-way valve body feed port valve core sealing gasket 213.
Further, the upper and lower ports of the three-way valve body 208 of the sludge cylinder are respectively connected to the discharge manifold 400 and the feeding shunt tube 500 through flanges, and the middle port is connected to the outer protection cylinder 205 of the sludge cylinder at one end of the rodless cavity of the working material cylinder 204 of the sludge cylinder through a screw, and serves as a rodless cavity end cover of the working material cylinder 204 of the sludge cylinder.
Preferably, in this preferred embodiment of the present invention, the sludge cylinder three-way valve body 208 of the left sludge three-way low-damping double-acting check valve 202 of the sludge cylinder 200 is an integrated three-way valve, the middle port is fixedly connected to the sludge cylinder outer protection cylinder 205 at one end of the rodless cavity of the sludge cylinder working cylinder 204, the outer circle positioning step is provided with a sealing device and an inner hole static seal of the sludge cylinder working cylinder 204 sleeved on the outer circle thereof, and the rodless cavity of the sludge cylinder 200 is sealed to serve as a sealing end cover of the rodless cavity of the sludge pump of the present invention. The inside of the upper opening of the sludge cylinder three-way valve body 208 is a straight-through type discharge port one-way valve, the upper opening is connected with the discharge collecting pipe 400, the inside of the lower opening of the sludge cylinder three-way valve body 208 is a straight-through type feed port one-way valve, and the lower opening is connected with the feed dividing pipe 500.
Specifically, the sludge cylinder four-way low-damping double-acting one-way valve 203 comprises a sludge cylinder four-way valve body 288, a sludge cylinder four-way valve body discharge port valve core 299, a sludge cylinder four-way valve body discharge port valve core seat 21010, a sludge cylinder four-way valve body discharge port valve core sealing gasket 21111, a sludge cylinder four-way valve body feed port valve core 21212 and a sludge cylinder four-way valve body feed port valve core sealing gasket 21313.
Further, the upper and lower ports of the four-way valve 288 of the sludge cylinder are respectively connected with the discharge collecting pipe 400 and the feeding flow dividing pipe 500 through flanges, the middle port is connected with the outer protecting cylinder 205 of the sludge cylinder at one end of the working material cylinder 204 with a rod cavity through a flange, and is used as an end cover of the working material cylinder 204 with the rod cavity, and the other middle port is connected and fixed with the double-acting hydraulic oil cylinder 100 through a flange.
Preferably, in the preferred embodiment of the present invention, the sludge cylinder four-way valve body 288 of the sludge four-way low damping double-acting check valve 203 is an integrated four-way valve. A straight-through discharge port one-way valve is arranged inside the upper opening of the sludge cylinder four-way valve body 288, and the upper opening is connected with the discharge collecting pipe 400; a straight-through type feed inlet one-way valve is arranged in the lower opening of the sludge cylinder four-way valve body 288, and the lower opening is connected with the feeding shunt pipe 500; the middle opening is fixedly connected with the sludge cylinder outer protection cylinder 205 at one end of the rod cavity of the sludge cylinder working material cylinder 204, the outer circle positioning step is provided with a sealing device and an inner hole of the sludge cylinder working material cylinder 204 sleeved on the outer circle of the sealing device for static sealing, and the rod cavity of the sludge cylinder 200 is sealed to be used as a sealing end cover of the rod cavity of the sludge pump; the other inner hole in the middle is provided with a sealing device and a piston rod 102 of the double-acting hydraulic oil cylinder extending into the inner hole in a sliding sealing way, so that a rod cavity of the sludge cylinder 200 is sealed; the piston rod 102 of the double-acting hydraulic oil cylinder extends into the sludge cylinder 200 and is connected with the piston 201 of the sludge cylinder. The sludge cylinder three-way valve body 208 of the sludge four-way low-damping double-acting check valve 203 is fixedly connected with the cylinder flange of the double-acting hydraulic oil cylinder 100 through screws.
The right-hand member excircle positioning step of mud jar three-way valve body 208 is provided with the sealing member, the right-hand member excircle positioning step of mud jar three-way valve body 208 is installed static seal in the left end hole of mud jar work feed cylinder 204, mud jar three-way valve body 208 pass through the screw with the left end of mud jar outer protection section of thick bamboo 205 is connected. The sludge cylinder three-way valve body discharge hole valve core seat 210 is installed in an upper opening inner hole of the sludge cylinder three-way valve body 208, the sludge cylinder three-way valve body discharge hole valve core 209 is installed in the inner hole of the sludge cylinder three-way valve body discharge hole valve core seat 210 in a sliding fit mode, the sludge cylinder three-way valve body discharge hole valve core sealing gasket 211 is installed below the sludge cylinder three-way valve body discharge hole valve core 209 on an inner hole step of the sludge cylinder three-way valve body 208, the sludge cylinder three-way valve body feed hole valve core 212 is installed in a valve core seat inner hole in the upper portion of the sludge cylinder three-way valve body feed hole 208 in a sliding fit mode, and the sludge cylinder three-way valve body feed hole valve core sealing gasket 213 is installed below the sludge cylinder three-way valve.
In the preferred embodiment of the present invention, the outer circle positioning step at the left end of the sludge cylinder four-way valve body 288 is provided with a sealing member, the outer circle positioning step at the left end of the sludge cylinder four-way valve body 288 is installed in the inner hole at the right end of the sludge cylinder working barrel 204, and the sludge cylinder four-way valve body 288 is connected with the right end of the sludge cylinder outer protection barrel 205 through a screw for static sealing. The right end inner hole of the sludge cylinder four-way valve body 288 is provided with a sealing device and is in sliding seal with the double-acting hydraulic oil cylinder piston rod 102 extending into the hole, and the right end of the sludge cylinder four-way valve body 288 is fixedly connected with the left end flange of the cylinder barrel 101 through a screw. The valve core seat 21010 of the discharge port of the sludge cylinder four-way valve body is arranged in an upper opening inner hole of the sludge cylinder four-way valve body 288, the valve core 299 of the discharge port of the sludge cylinder four-way valve body is arranged in the inner hole of the valve core seat 21010 of the discharge port of the sludge cylinder four-way valve body in a sliding fit manner, and the valve core sealing gasket 21111 of the discharge port of the sludge cylinder four-way valve body is arranged on an inner hole step of the sludge cylinder four-way valve body 288 below the valve core 299 of the discharge port of. The sludge cylinder four-way valve body feed inlet valve core 21212 is arranged in the inner hole of the valve core seat at the upper part of the feed inlet of the sludge cylinder four-way valve body 288 in a sliding fit manner. The sealing gasket 21313 of the sludge cylinder four-way valve body feed inlet valve core is arranged on the inner hole step of the sludge cylinder four-way valve body 288 below the sludge cylinder four-way valve body feed inlet valve core 21212.
It will be appreciated by those skilled in the art that the foregoing screw connection is merely exemplary in this preferred embodiment of the present invention, and that other connection methods, such as welding, are also possible, and the present invention is not limited in this respect.
It is worth mentioning that the sludge cylinder three-way type low-damping double-acting one-way valve 202 is an integrated structure, has the functions of upper discharging one-way non-return and lower feeding one-way non-return, and is used as a rodless cavity sealing end cover of the sludge cylinder working material cylinder 204. The sludge cylinder four-way type low-damping double-acting one-way valve 203 is an integrated structure, has the functions of upper discharging one-way check and lower feeding one-way check, and serves as a rod cavity sealing end cover of the sludge cylinder working material cylinder 204, and has the functions of sliding sealing with the piston rod 102 of the double-acting hydraulic oil cylinder extending into the hole of the double-acting hydraulic oil cylinder and connecting with the middle double-acting hydraulic oil cylinder 100. The upper discharge port one-way valve is in a straight-through structure and is directly connected with the discharge collecting pipe 400, the lower feed port one-way valve is in a straight-through structure and is directly connected with the feed dividing pipe 500, materials directly enter the sludge cylinder working material barrel 204 from the feed dividing pipe 500 through the straight-through lower feed port one-way valve, the movement distance is short without other pipelines and elbows in the middle, the flowing direction is not changed, turbulent flow resistance is not generated, and the operation efficiency is high; the materials directly enter the discharge collecting pipe 400 from the sludge cylinder working material barrel 204 through a straight-through type upper discharge hole one-way valve, and the operation efficiency is high without other pipelines and elbows, the movement distance is short, the flowing direction is not changed, and turbulence resistance is not generated.
In the preferred embodiment of the present invention, the right chamber of the double-acting hydraulic cylinder 100 is supplied with oil, the piston rod 102 of the double-acting hydraulic cylinder pushes the piston 201 of the sludge cylinder leftward to move leftward, the valve core 212 of the sludge cylinder three-way low damping double-acting check valve 202 at the left end of the sludge cylinder 200 moves downward to press the valve core gasket 213 at the sludge cylinder three-way valve body feed inlet so as to close the feed inlet, the valve core 209 of the sludge cylinder three-way low damping double-acting check valve 202 at the left end of the sludge cylinder 200 moves upward to separate from the valve core gasket 211 at the sludge cylinder three-way valve body feed outlet so as to open the feed outlet, and the material in the rodless chamber at the left side of the piston 201 of the sludge cylinder is discharged to the discharge manifold 400 installed on the sludge cylinder 200. Meanwhile, the sludge cylinder four-way type low damping double-acting check valve 203 at the right end of the sludge cylinder 200 has the sludge cylinder four-way type low damping double-acting check valve 203, the sludge cylinder four-way valve body discharge port valve core 299 moves downwards to press the sludge cylinder four-way valve body discharge port valve core sealing gasket 21111 to close the discharge port, the sludge cylinder four-way type low damping double-acting check valve 203 at the right end of the sludge cylinder 200 has the sludge cylinder four-way valve body feed port valve core 21212 moves upwards to separate from the sludge cylinder four-way valve body feed port valve core sealing gasket 21313 to open the feed port, and the rod cavity at the right side of the sludge cylinder piston 201 sucks the material in the feeding shunt pipe.
The left cavity of the double-acting hydraulic oil cylinder 100 is supplied with oil, the piston rod 102 of the double-acting hydraulic oil cylinder pulls the piston 201 of the sludge cylinder to move rightwards, the valve core 212 of the sludge cylinder three-way low-damping double-acting check valve 202 at the left end of the sludge cylinder 200 moves upwards to separate from the valve core sealing pad 213 of the sludge cylinder three-way valve body feeding port so as to open the feeding port, the valve core 209 of the sludge cylinder three-way low-damping double-acting check valve 202 at the left end of the sludge cylinder 200 moves downwards to press the valve core sealing pad 211 of the sludge cylinder three-way valve body feeding port so as to close the feeding port, and the rodless cavity at the left side of the sludge cylinder piston 201 sucks the materials in the feeding shunt pipe 500 installed on the sludge cylinder 200 to finish storing. Meanwhile, the sludge cylinder four-way type low damping double-acting check valve 203 at the right end of the sludge cylinder 200 has the sludge cylinder four-way type low damping double-acting check valve 203, the sludge cylinder four-way valve body discharge port valve spool 299 moves upwards to separate from the sludge cylinder four-way valve body discharge port valve spool gasket 21111 so as to open the discharge port, the sludge cylinder four-way type low damping double-acting check valve 203 at the right end of the sludge cylinder 200 has the sludge cylinder four-way valve body feed port valve spool 21212 moves downwards to press the sludge cylinder four-way valve body feed port valve spool gasket 21313 so as to close the feed port, and the material with the rod cavity at the right side of the sludge cylinder piston 201 is discharged to the.
Further, the sludge cylinder working material cylinder 204 is sleeved with the sludge cylinder outer protection cylinder 205. Preferably, in this preferred embodiment of the present invention, the sludge cylinder outer protecting cylinder 205 is fitted over the outer circumference of the sludge cylinder working cylinder 204. The both ends of a mud jar external protection section of thick bamboo 205 are provided with the cooling hole, mud jar work feed cylinder 204 with there is an annular cavity between the mud jar external protection section of thick bamboo 205, mud jar work feed cylinder 204 with the both ends of a mud jar external protection section of thick bamboo 205 are provided with the sealing member for clearance fit and support and sealed. Preferably, in this preferred embodiment of the present invention, the annular cavity is formed between the outer circumference of the sludge cylinder working cylinder 204 and both ends of the inner hole of the sludge cylinder outer protecting cylinder 205.
It should be noted that, preferably, in the preferred embodiment of the present invention, the sludge cylinder working barrel 204 and the sludge cylinder piston 201 are in clearance fit, so that the sludge cylinder working barrel 204 made of different materials can be conveniently replaced according to the wear condition or material property of the sludge cylinder working barrel 204. Sludge cylinder work feed cylinder 204 with during operation back and forth movement friction produces a large amount of heat energy between the sludge cylinder piston 201 the cooling hole that the both ends of sludge cylinder outer protection section of thick bamboo 205 set up lets in cooling medium gets into annular cavity takes away sludge cylinder work feed cylinder 204 with a large amount of heat energy that the during operation back and forth movement friction produced between the sludge cylinder piston 201 effectively delays the ageing inefficacy of the sealing member of sludge cylinder piston 201. Meanwhile, the two ends of the sludge cylinder working material cylinder 204 and the sludge cylinder outer protection cylinder 205 are in clearance fit, and a sealing member is arranged to support and seal, so that the sludge cylinder working material cylinder 204 is suspended on the sludge cylinder piston 201. Mud jar work feed cylinder 204 suspends in on the mud jar piston 201, can effectual compensation the cylindricity error that mud jar work feed cylinder 204 processing caused and the axiality error of assembly can not cause the hole of mud jar work feed cylinder 204 with the eccentric wear phenomenon of mud jar piston 201 prolongs mud jar work feed cylinder 204 and mud jar piston 201 with the life of the sealing member of mud jar piston 201.
It is worth mentioning that the single-cylinder dual-feed hydraulic piston pump further comprises a stroke adjustment reversing device, and the stroke adjustment reversing device is installed between the sludge cylinder 200 and the cylinder rear end cover flange 107 of the dual-acting hydraulic cylinder 100. Specifically, the stroke adjustment and reversing device comprises a first sealing guide sleeve 104, a first position sensor 105, a reversing valve rod 106, a position detection sensor 108, a second position sensor 109 and a second sealing guide sleeve 110. More specifically, the first sealing guide sleeve 104 and the position sensor 105 are installed on the sludge cylinder four-way low damping double-acting check valve 203 at the right end of the sludge cylinder 200, the second sealing guide sleeve 110 and the second position sensor 109 are installed on the cylinder rear end cover 111 of the double-acting hydraulic cylinder 100, the reversing valve rod 106 is installed in the sealing guide sleeve hole of the first sealing guide sleeve 104 and the second sealing guide sleeve 110, the position detection sensor 108 is installed on the reversing valve rod 106, and the reversing valve rod 106 is installed in a sludge cylinder piston clamping groove.
It should be noted that the effective strokes at the two ends of the double-acting hydraulic cylinder 100 can be adjusted by adjusting the installation positions of the first position sensor 105 and the second position sensor 109, so that when the double-acting hydraulic cylinder 100 moves back and forth at a high speed, the piston 201 of the sludge cylinder cannot contact the sealing end covers at the two ends of the sludge cylinder, and the cylinder collision caused by large movement inertia is avoided.
More specifically, in this preferred embodiment of the present invention, the effective stroke of the left end of the double acting hydraulic ram 100 is adjusted by adjusting the mounting position of the first position sensor 105 mounted on the sludge cylinder four-way low damping double acting check valve body 288. The effective stroke of the right end of the double-acting hydraulic oil cylinder 100 is adjusted by adjusting the mounting position of the second position sensor 109 mounted on the oil cylinder rear end cover flange 107, so that when the double-acting hydraulic oil cylinder 100 moves back and forth at a high speed, the piston of the double-acting hydraulic oil cylinder piston rod 102 cannot contact the guide sleeve 103 and the oil cylinder rear end cover 111, and cylinder collision caused by large movement inertia is avoided.
In the preferred embodiment of the present invention, the right chamber of the double-acting hydraulic oil cylinder 100 is supplied with oil, the piston rod 102 of the double-acting hydraulic oil cylinder pushes the piston 201 of the sludge cylinder leftwards to move, the reversing valve rod 106 installed in the holes of the first sealing guide sleeve 104 and the second sealing guide sleeve 110 is pulled to move leftwards, when the position detection sensor 108 installed on the reversing valve rod 106 approaches the first position sensor 105 installed on the sludge cylinder four-way type low damping double-acting check valve body 288, the first position sensor 105 sends a signal to a hydraulic system to reverse the reversing valve, and the left chamber of the double-acting hydraulic oil cylinder 100 is supplied with oil; the piston rod 102 of the double-acting hydraulic oil cylinder pulls the piston 201 of the left sludge cylinder to move rightwards, the piston 201 of the left sludge cylinder pushes the reversing valve rod 106 arranged in the holes of the first sealing guide sleeve 104 and the second sealing guide sleeve 110 to move rightwards, when the position detection inductor 108 arranged on the reversing valve rod 106 is close to the second position inductor 109 arranged on the flange 107 of the rear end cover of the oil cylinder, the second position inductor 109 sends a signal to a hydraulic system to reverse the reversing valve, oil is supplied to the right cavity of the double-acting hydraulic oil cylinder 100, and the cycle is repeated.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (24)
1. The utility model provides a two feeding hydraulic piston pumps of single cylinder, its characterized in that, includes two effect hydraulic cylinder and a mud jar, wherein two effect hydraulic cylinder are provided with two effect hydraulic cylinder piston rods, the mud jar is provided with mud jar piston, wherein two effect hydraulic cylinder piston rods come the back motion work, drive the mud jar piston back and forth movement, thereby the upper discharge gate check valve and the lower feed inlet check valve of mud jar are opened in turn and are closed and accomplish feeding and arrange the material, and so reciprocating motion realizes the pump sending material.
2. A single cylinder dual feed hydraulic piston pump as in claim 1, wherein the sludge cylinder comprises a sludge cylinder three-way low damping double acting check valve and a sludge cylinder four-way low damping double acting check valve, the sludge cylinder three-way low damping double acting check valve and the sludge cylinder four-way low damping double acting check valve are disposed at an end of the sludge cylinder, wherein an upper discharge port check valve and a lower discharge port check valve of the sludge cylinder three-way low damping double acting check valve and the sludge cylinder four-way low damping double acting check valve are alternately opened and closed to complete feeding and discharging.
3. The single-cylinder dual-feed hydraulic piston pump of claim 1, wherein the sludge cylinder comprises a sludge cylinder three-way valve body and a sludge cylinder four-way valve body, wherein the sludge cylinder three-way valve body is an integrated three-way valve body, a straight-through discharge port one-way valve is arranged inside an upper opening of the sludge cylinder three-way valve body, the sludge cylinder four-way valve body is an integrated four-way valve body, a straight-through feed port one-way valve is arranged inside a lower opening of the sludge cylinder four-way valve body, and the sludge cylinder three-way valve body of the sludge cylinder, the straight-through discharge port one-way valve of the sludge cylinder four-way valve body of the sludge cylinder and the straight-through feed port one-way valve are opened and closed alternately to.
4. The single cylinder dual feed hydraulic piston pump of claim 1, wherein the sludge cylinder comprises a sludge cylinder three-way valve body and a sludge cylinder four-way valve body, the single cylinder dual feed hydraulic piston pump further comprises a discharge manifold and a feed shunt tube, the upper and lower ports of the sludge cylinder three-way valve body are respectively connected with the discharge manifold and the feed shunt tube through flanges, and the upper and lower ports of the sludge cylinder four-way valve body are respectively connected with the discharge manifold and the feed shunt tube through flanges.
5. The single cylinder dual-feed hydraulic piston pump of claim 1, further comprising an outlet manifold mounted to an outlet port of each of the sludge cylinders, and a feed manifold mounted to an inlet port of each of the sludge cylinders.
6. A single cylinder dual feed hydraulic piston pump as in claim 5, wherein said discharge manifold is connected to the discharge port of said sludge cylinder by a flange and said feed manifold is connected to the feed port of said sludge cylinder by a flange.
7. A single cylinder dual feed hydraulic piston pump as in claim 1, wherein a three way low damping double acting check valve and a four way low damping double acting check valve are provided at both ends of the sludge cylinder, the three way low damping double acting check valve is an integrated structure having an upper discharge one way check function and a lower feed one way check function, wherein the four way low damping double acting check valve is an integrated structure having an upper discharge one way check function and a lower feed one way check function.
8. The single cylinder dual feed hydraulic piston pump of claim 7, further comprising a discharge manifold and a feed manifold, the sludge cylinder further comprising a sludge cylinder working cylinder, wherein the three-way low damping double acting check valve comprises a sludge cylinder three-way valve body, the upper and lower ports of the sludge cylinder three-way valve body are respectively connected with the discharge manifold and the feed manifold through flanges, and the middle port is connected with the sludge cylinder working cylinder.
9. A single cylinder dual feed hydraulic piston pump as in claim 8, wherein the middle port of said three way valve body of said three way low damping double acting check valve is connected to said sludge cylinder working cylinder as a rodless chamber end cap of said sludge cylinder working cylinder.
10. The single-cylinder dual-feed hydraulic piston pump of claim 8, wherein the three-way low-damping double-acting check valve further comprises a sludge cylinder three-way valve body discharge port valve core, a sludge cylinder three-way valve body discharge port valve core seat, a sludge cylinder three-way valve body discharge port valve core gasket, a sludge cylinder three-way valve body feed port valve core and a sludge cylinder three-way valve body feed port valve core gasket, wherein the sludge cylinder three-way valve body discharge port valve core seat is installed in an upper port inner hole of the sludge cylinder three-way valve body, the sludge cylinder three-way valve body discharge port valve core is installed in an inner hole of the sludge cylinder three-way valve body discharge port valve core seat in a sliding fit manner, the sludge cylinder three-way valve body discharge port valve core gasket is installed on an inner hole step of the sludge cylinder three-way valve body below the sludge cylinder three-way valve body discharge port valve core seat, the sealing gasket of the feed port valve core of the sludge cylinder three-way valve body is arranged on the step of the inner hole of the sludge cylinder three-way valve body below the feed port valve core of the sludge cylinder three-way valve body.
11. The single cylinder dual feed hydraulic piston pump of claim 7, further comprising a discharge manifold and a feed manifold, and wherein the sludge cylinder further comprises a sludge cylinder working cylinder, wherein the four-way low damping double acting check valve comprises a sludge cylinder four-way valve body, two upper and lower ports of the sludge cylinder four-way valve body are respectively connected with the discharge manifold and the feed manifold through flanges, an intermediate port is connected with the sludge cylinder working cylinder, and the other intermediate port is fixedly connected with the double acting hydraulic cylinder through a flange.
12. A single cylinder dual feed hydraulic piston pump as in claim 11, wherein said middle port of said four-way valve body of said four-way low damping double acting check valve is flanged to said sludge cylinder working cylinder as a rod cavity end cap of said sludge cylinder working cylinder.
13. The single-cylinder dual-feed hydraulic piston pump as claimed in claim 11, wherein the four-way low-damping dual-action check valve further comprises a sludge cylinder four-way valve body discharge port valve core, a sludge cylinder four-way valve body discharge port valve core seat, a sludge cylinder four-way valve body discharge port valve core sealing gasket, a sludge cylinder four-way valve body feed port valve core and a sludge cylinder four-way valve body feed port valve core sealing gasket, wherein the sludge cylinder four-way valve body discharge port valve core seat is installed in an upper opening inner hole of the sludge cylinder four-way valve body, the sludge cylinder four-way valve body discharge port valve core is installed in a sliding fit manner in an inner hole of the sludge cylinder four-way valve body discharge port valve core seat, the sludge cylinder four-way valve body discharge port valve core sealing gasket is installed on an inner hole step of the sludge cylinder four-way valve body discharge port valve body below the sludge cylinder four- In the device, a sealing gasket of a feed port valve core of the sludge cylinder four-way valve body is arranged on an inner hole step of the sludge cylinder four-way valve body below the feed port valve core of the sludge cylinder four-way valve body.
14. The single cylinder dual feed hydraulic piston pump of any one of claims 1 to 7, wherein the sludge cylinder further comprises a sludge cylinder working cylinder and a sludge cylinder outer protecting cylinder, wherein the sludge cylinder working cylinder is sleeved in the sludge cylinder outer protecting cylinder.
15. The single cylinder dual feed hydraulic piston pump of claim 14, wherein the sludge cylinder outer protecting cylinder is provided with cooling ports at both ends thereof, an annular cavity is provided between the sludge cylinder working cylinder and the sludge cylinder outer protecting cylinder, and both ends of the sludge cylinder working cylinder and the outer protecting cylinder are supported and sealed by sealing members in a clearance fit.
16. The single cylinder dual feed hydraulic piston pump of claim 15, wherein the sludge cylinder piston is a sliding seal fit in the inner bore of the sludge cylinder working cylinder, the sludge cylinder outer protecting cylinder is sleeved on the outer circle of the sludge cylinder working cylinder, and the annular cavity is formed between the outer circle of the sludge cylinder working cylinder and two ends of the inner bore of the sludge cylinder outer protecting cylinder.
17. The single-cylinder dual-feed hydraulic piston pump as claimed in any one of claims 8 to 13, wherein the sludge cylinder further comprises a sludge cylinder outer protecting cylinder, the sludge cylinder working material cylinder is sleeved in the sludge cylinder outer protecting cylinder, cooling ports are arranged at two ends of the sludge cylinder outer protecting cylinder, an annular cavity is arranged between the sludge cylinder working material cylinder and the sludge cylinder outer protecting cylinder, and sealing members are arranged at two ends of the sludge cylinder working material cylinder and the outer protecting cylinder in a clearance fit manner for supporting and sealing.
18. The single cylinder dual feed hydraulic piston pump of claim 17, wherein the outer circular positioning step of the end of the sludge cylinder three-way valve body is provided with a sealing member and is mounted in the inner hole of the end of the sludge cylinder working cylinder for static sealing, wherein the sludge cylinder three-way valve body is connected with the end of the sludge cylinder outer protective cylinder.
19. A single cylinder dual feed hydraulic piston pump as in claim 17 wherein the outer circular positioning step at one end of said sludge cylinder four-way valve body is provided with a sealing member and is mounted in the inner bore of the end of said sludge cylinder working cylinder for static sealing, said sludge cylinder four-way valve body is connected with the end of said sludge cylinder outer protecting cylinder, wherein the inner bore at the other end of said sludge cylinder four-way valve body is provided with a sealing means and is in sliding sealing with the piston rod of said double acting hydraulic cylinder extending into the bore thereof.
20. The single cylinder dual feed hydraulic piston pump of any one of claims 1 to 13, further comprising a stroke adjustment reversing device mounted between the sludge cylinder and the dual acting hydraulic ram.
21. A single cylinder dual feed hydraulic piston pump as in claim 20 wherein said dual acting hydraulic ram includes a ram rear end cap flange, said stroke adjustment reversing device being mounted between said sludge cylinder and said ram rear end cap flange of said dual acting hydraulic ram.
22. A single cylinder dual feed hydraulic piston pump as in claim 20 wherein the dual acting hydraulic cylinder includes a cylinder rear end cap, the stroke adjusting reversing device includes a first seal guide, a first position sensor, a reversing valve stem, a position sensing sensor, a second position sensor and a second seal guide, the first seal guide and the position sensor are mounted on the ends of the sludge cylinder, the second seal guide and the second position sensor are mounted on the cylinder rear end cap of the dual acting hydraulic cylinder, the reversing valve stem is mounted in a seal guide hole of the first seal guide and the second seal guide, the position sensing sensor is mounted on the reversing valve stem.
23. A single cylinder dual feed hydraulic piston pump as in any one of claims 1 to 13 wherein the sludge cylinder piston of the sludge cylinder and the dual acting hydraulic cylinder piston rod of the dual acting hydraulic cylinder are axially and radially fixed by a snap key and a self sealing nut axially locks the seal.
24. The single cylinder dual feed hydraulic piston pump of any one of claims 1 to 13, wherein the sludge cylinder further comprises a sludge cylinder self-locking nut and a sludge cylinder snap key, wherein the sludge cylinder piston is mounted on the end of the piston rod of the dual acting hydraulic cylinder, the sludge cylinder snap key is snapped into a snap key slot on the end of the piston rod of the dual acting hydraulic cylinder, and the sludge cylinder self-locking nut is screwed onto an external thread on the end of the piston rod of the dual acting hydraulic cylinder.
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| CN201911372842.9A CN111140458A (en) | 2019-12-27 | 2019-12-27 | Single-cylinder double-feeding hydraulic piston pump |
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| CN112392677A (en) * | 2020-11-13 | 2021-02-23 | 德润液压科技（常州）有限公司 | Sludge plunger pump |
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|---|---|---|---|---|
| CN112392677A (en) * | 2020-11-13 | 2021-02-23 | 德润液压科技（常州）有限公司 | Sludge plunger pump |
| CN112392677B (en) * | 2020-11-13 | 2022-05-17 | 德润液压科技（常州）有限公司 | Sludge plunger pump |
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Application publication date: 20200512 |
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| RJ01 | Rejection of invention patent application after publication |