CN111140459B - Double-cylinder single-feeding hydraulic piston pump - Google Patents

Double-cylinder single-feeding hydraulic piston pump Download PDF

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Publication number
CN111140459B
CN111140459B CN201911374620.0A CN201911374620A CN111140459B CN 111140459 B CN111140459 B CN 111140459B CN 201911374620 A CN201911374620 A CN 201911374620A CN 111140459 B CN111140459 B CN 111140459B
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Prior art keywords
cylinder
sludge
double
sludge cylinder
rod
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CN111140459A (en
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钱言
钱小刚
张菊香
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Jiangsu Wanchuan Hydraulic Machinery Equipment Co ltd
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Jiangsu Wanchuan Hydraulic Machinery Equipment Co ltd
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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
    • 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
    • F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • 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
    • 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
    • F04B9/109—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 plural pumping chambers
    • F04B9/111—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 plural pumping chambers with two mechanically connected pumping members
    • F04B9/113—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 plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting liquid motor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

A double-cylinder single-feeding hydraulic piston pump comprises a double-rod double-acting hydraulic oil cylinder and two sludge cylinders, wherein the two sludge cylinders are respectively arranged at two ends of the double-rod double-acting hydraulic oil cylinder, the double-rod double-acting hydraulic oil cylinder is provided with a double-rod double-acting hydraulic oil cylinder piston rod, both the two sludge cylinders are provided with sludge cylinder pistons, the sludge cylinder pistons of the two sludge cylinders are respectively arranged at two ends of the double-rod double-acting hydraulic oil cylinder piston rod, one end of each sludge cylinder is provided with a three-way low-damping double-acting one-way valve, the other end of each sludge cylinder is provided with a sludge cylinder connecting end cover, the double-rod double-acting hydraulic oil cylinder piston rod returns to drive the sludge cylinder pistons of the two sludge cylinders at two ends to move back and forth, and an upper discharge port one-way valve and a lower feed port one-way valve of the three-way low-damping double-acting one-, the reciprocating motion realizes the pumping of materials.

Description

Double-cylinder single-feeding hydraulic piston pump
Technical Field
The invention relates to the field of sludge pumps, in particular to an energy-saving and environment-friendly double-cylinder single-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 double-cylinder single-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 install, maintain and maintain.
In order to achieve at least one of the above objects, the present invention provides a double-cylinder single-feed hydraulic piston pump, comprising a double-rod double-acting hydraulic cylinder and two sludge cylinders, wherein the two sludge cylinders are respectively installed at two ends of the double-rod double-acting hydraulic cylinder, wherein the double-rod double-acting hydraulic cylinder is provided with a double-rod double-acting hydraulic cylinder piston rod, both the two sludge cylinders are provided with sludge cylinder pistons, each sludge cylinder piston of the two sludge cylinders is respectively installed at two ends of the double-rod double-acting hydraulic cylinder piston rod, wherein one end of each sludge cylinder is provided with a three-way low-damping double-acting check valve, and the other end is provided with a sludge cylinder connecting end cap, wherein the double-rod double-acting hydraulic cylinder piston rod is used for transporting work back to push the sludge cylinder pistons of the two sludge cylinders at two ends to move back and forth, and the upper discharge port one-way valve and the lower feed port one-way valve of the three-way low-damping double-acting one-way valve of each sludge cylinder are opened and closed alternately to finish feeding and discharging, and the sludge cylinders reciprocate in this way to pump materials.
In some embodiments, the three-way low damping double-acting one-way valve is an integrated structure and has the functions of upper discharging one-way check and lower feeding one-way check.
In some embodiments, the sludge cylinder piston of each sludge cylinder and the dual-out rod dual-acting hydraulic cylinder piston rod of the dual-out rod dual-acting hydraulic cylinder are axially and radially fixed by a snap key, and a self-sealing nut axially locks and seals the piston.
In some embodiments, the piston rod of the double-rod double-acting hydraulic oil cylinder extends into each sludge cylinder connecting end cover to be connected with each sludge cylinder piston.
In some embodiments, each of the sludge cylinders further comprises a sludge cylinder self-locking nut and a sludge cylinder clamp key, wherein the sludge cylinder clamp key is clamped in a clamp key groove at the end of the piston rod of the double-rod double-acting hydraulic oil cylinder, and the sludge cylinder self-locking nut is screwed on the external thread at the end of the piston rod of the double-rod double-acting hydraulic oil cylinder.
In some embodiments, the two-cylinder single-feed hydraulic piston pump further comprises a discharge manifold connected to the discharge port of each of the sludge cylinders, and a feed bypass pipe connected to the feed port of each of the sludge cylinders.
In some embodiments, the discharge collecting pipe is connected with the discharge port of each sludge cylinder through a flange, and the feeding shunt pipe is connected with the feeding port of each sludge cylinder through a flange.
In some embodiments, each sludge cylinder is further provided with a sludge cylinder working material cylinder, one end of the sludge cylinder connecting end cover is connected with the sludge cylinder working material cylinder to serve as a rod cavity end cover of the sludge cylinder working material cylinder, and the other end of the sludge cylinder connecting end cover is fixedly connected with the double-rod double-acting hydraulic oil cylinder through a flange.
In some embodiments, the sludge cylinder three-way low-damping double-acting one-way valve comprises a sludge cylinder three-way valve body, and the middle opening of the sludge cylinder three-way valve body is connected with the sludge cylinder working material cylinder and serves as a rodless cavity end cover of the sludge cylinder working material cylinder.
In some embodiments, the sludge cylinder 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, wherein the sludge, the sealing gasket of the feed port valve core of the sludge cylinder three-way valve body is arranged in a step hole at the lower part of the feed port valve core of the sludge cylinder three-way valve body.
In some embodiments, each of the sludge cylinders further includes a sludge cylinder outer protection cylinder, wherein the sludge cylinder working material cylinder is sleeved in the sludge cylinder outer protection cylinder, and a middle opening of the sludge cylinder three-way valve body is connected to the sludge cylinder outer protection cylinder at one end of the rodless cavity of the sludge cylinder working material cylinder and serves as a rodless cavity end cover of the sludge cylinder working material cylinder.
In some embodiments, each sludge cylinder is further provided with a sludge cylinder working material cylinder, the sludge cylinder three-way low-damping double-acting one-way valve comprises a sludge cylinder 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 and connected with the discharge collecting pipe, a straight-through feed port one-way valve is arranged inside a lower opening of the sludge cylinder three-way valve body and connected with the feeding flow dividing pipe, and a middle opening of the sludge cylinder three-way valve body is connected with the sludge cylinder working material cylinder.
In some embodiments, each of the sludge cylinders 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 three-way low-damping double-acting one-way valve comprises a sludge cylinder three-way valve body, the middle opening of the sludge cylinder three-way valve body is connected with the sludge cylinder working material cylinder, an outer circle positioning step of the middle opening of the sludge cylinder three-way valve body is provided with a sealing piece and is installed in an inner hole of the end part of the sludge cylinder working material cylinder for static sealing, and the end part of the sludge cylinder three-way valve body is connected with the end part of the sludge cylinder outer protection cylinder.
In some embodiments, the two-cylinder single-feed hydraulic piston pump further comprises a stroke-adjusting reversing device, which is installed between the two sludge cylinders.
In some embodiments, the stroke adjustment and reversing device includes 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, wherein the first sealing guide sleeve and the first position sensor are mounted at an end of one of the sludge cylinders, the second position sensor and the second sealing guide sleeve are mounted at an end of the other sludge cylinder, the reversing valve rod is mounted in the sealing guide sleeve holes 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, the stroke adjustment and reversing device includes 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, wherein the first sealing guide sleeve and the first position sensor are mounted on the sludge cylinder connecting end cover of one of the sludge cylinders, the second position sensor and the second sealing guide sleeve are mounted on the sludge cylinder connecting end cover of the other of the sludge cylinders, 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, the double-rod-out double-acting hydraulic cylinder further comprises a cylinder, a buffer plunger, a first guide sleeve and a second guide sleeve, wherein the double-rod-out double-acting hydraulic cylinder piston rod and the buffer plunger are assembled in the cylinder, the first guide sleeve is installed at one end of the cylinder, the second guide sleeve is installed at the other end of the cylinder, a piston of the double-rod-out double-acting hydraulic cylinder piston rod is in sliding sealing fit with an inner hole of the cylinder, and a piston rod of the double-rod-out double-acting hydraulic cylinder piston rod is in sliding sealing fit with the inner holes of the first guide sleeve and the second guide sleeve.
Compared with the prior art, the invention has the following beneficial effects: the double-cylinder single-feeding hydraulic piston pump provided by the invention is provided with a double-outlet-rod double-acting hydraulic oil cylinder, a left sludge cylinder arranged at the left end of the double-outlet-rod double-acting hydraulic oil cylinder, a right sludge cylinder arranged at the right end of the double-outlet-rod double-acting hydraulic oil cylinder, a stroke adjusting reversing device arranged between the left sludge cylinder and the right sludge cylinder, discharging collecting pipes arranged on the left sludge cylinder and the right sludge cylinder, and feeding flow dividing pipes arranged on the left sludge cylinder and the right sludge cylinder. The three-way low-damping double-acting one-way valve has an integrated structure, has the functions of one-way non-return of upper discharging and one-way non-return of lower feeding, serves as a rodless cavity sealing end cover of the working material cylinder, serves as a rod cavity sealing end cover of the connecting end cover, and has the functions of sliding sealing with a double-acting piston rod extending into a hole of the connecting end cover and connecting with a middle double-rod double-acting hydraulic oil cylinder. 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 the two ends of the double-output-rod double-acting hydraulic oil cylinder can be adjusted by adjusting the mounting positions of the position sensors mounted on the two-end connecting end covers, so that the pistons cannot contact with guide sleeves at the left and right ends of the double-output-rod double-acting hydraulic oil cylinder when the double-output-rod double-acting hydraulic oil cylinder moves back and forth at a high speed, and cylinder collision caused by large movement inertia is avoided. The sludge cylinder working material cylinder and the sludge cylinder piston are sliding sealing pairs, and working material cylinders made of different materials can be conveniently replaced according to different abrasion conditions or material properties of the working material cylinders; the sludge cylinder working material cylinder and the sludge cylinder piston generate a large amount of heat energy through back and forth movement friction during working, the accelerated aging failure of the sludge cylinder piston sealing element is realized, cooling ports are arranged at two ends of the outer protection cylinder, cooling media are introduced into the annular cavity through the cooling ports, a large amount of heat energy generated through back and forth movement friction during working between the sludge cylinder working material cylinder and the sludge cylinder piston is taken away, and the aging failure of the sludge cylinder piston sealing element is effectively delayed. Meanwhile, the two ends of the working material cylinder and the outer protection cylinder are in clearance fit, and the sealing piece is arranged for supporting and sealing, so that the working material cylinder is suspended on the sludge cylinder piston, the cylindricity error and the assembly coaxiality error caused by the working material cylinder processing can be effectively compensated, the eccentric wear phenomenon of the inner hole of the working material cylinder and the sludge cylinder piston can not be caused, and the service lives of the working material cylinder, the piston and the piston sealing piece are prolonged.
Drawings
Fig. 1 is a perspective view of a dual cylinder single feed hydraulic piston pump in accordance with a preferred embodiment of the present invention.
Fig. 2 is a perspective view schematically illustrating the double cylinder single 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 double-cylinder single-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 double-cylinder single-feeding hydraulic piston pump comprises a double-outlet-rod double-acting hydraulic oil cylinder 100, a left sludge cylinder 200 and a right sludge cylinder 300, wherein the left sludge cylinder 200 is installed at the left end of the double-outlet-rod double-acting hydraulic oil cylinder 100, and the right sludge cylinder is installed at the right end of the double-outlet-rod double-acting hydraulic oil cylinder 100.
Specifically, the double-rod and double-acting hydraulic oil cylinder 100 comprises a cylinder 101, a cylinder flange, a piston rod 102 of the double-rod and double-acting hydraulic oil cylinder, a buffer plunger, a first guide sleeve 103 and a second guide sleeve 107. Further, the piston rod 102 of the double-rod-out double-acting hydraulic oil cylinder and the buffer plunger are assembled in the cylinder 101, the first guide sleeve 103 is installed at the left end of the cylinder 101, the second guide sleeve 107 is installed at the right end of the cylinder 101, the piston of the piston rod 102 of the double-rod-out double-acting hydraulic oil cylinder is in sliding sealing fit with the inner hole of the cylinder 101, and the piston rod of the piston rod 102 of the double-rod-out double-acting hydraulic oil cylinder is in sliding sealing fit with the inner holes of the first guide sleeve 103 and the second guide sleeve 107.
Specifically, the double-cylinder single-feed hydraulic piston pump further comprises a discharge manifold 400 and a feed dividing pipe 500, wherein the discharge manifold 400 and the feed dividing pipe 500 are installed on the left sludge cylinder 200 and the right sludge cylinder 300. Further, the discharging manifold 400 installed on the left sludge cylinder 200 and the right sludge cylinder 300 is connected to the discharging ports of the left sludge cylinder 200 and the right sludge cylinder 300 through flanges, and the feeding shunt tubes 500 installed on the left sludge cylinder 200 and the right sludge cylinder 300 are connected to the feeding ports of the left sludge cylinder 200 and the right sludge cylinder 300 through flanges, respectively.
Specifically, the left sludge cylinder 200 comprises a left sludge cylinder piston 201, a left sludge cylinder three-way low-damping double-acting one-way valve 202, a left sludge cylinder connecting end cover 203, a left sludge cylinder working material cylinder 204, a left sludge cylinder external protection cylinder 205, a left sludge cylinder self-locking nut 206 and a left sludge cylinder clamp key 207.
Specifically, the left sludge cylinder three-way low-damping double-acting check valve 202 of the left sludge cylinder 200 comprises a left sludge cylinder three-way valve body 208, a left sludge cylinder three-way valve body discharge port valve core 209, a left sludge cylinder three-way valve body discharge port valve core seat 210, a left sludge cylinder three-way valve body discharge port valve core sealing gasket 211, a left sludge cylinder three-way valve body feed port valve core 212 and a left sludge cylinder three-way valve body feed port valve core sealing gasket 213. The upper and lower ports of the left sludge cylinder three-way valve body 208 are respectively connected with the discharging collecting pipe 400 and the feeding shunt pipe 500 through flanges, and the middle port is connected with the left sludge cylinder outer protection cylinder 205 at one end of the rodless cavity of the left sludge cylinder working material cylinder 204 through a flange and is used as a rodless cavity end cover of the left sludge cylinder working material cylinder 204.
Specifically, one end of the left sludge cylinder connecting end cover 203 is connected with the left sludge cylinder working material cylinder 204, and serves as a rod cavity end cover of the left sludge cylinder working material cylinder 204, and the other end of the left sludge cylinder connecting end cover is fixedly connected with the double-rod double-acting hydraulic oil cylinder 100 through a flange.
Further, the left sludge cylinder piston 201 is assembled at the left end of the double-outlet-rod double-acting hydraulic cylinder piston rod 102, the left sludge cylinder clamping key 207 is clamped in a left-end clamping key groove of the double-outlet-rod double-acting hydraulic cylinder piston rod 102, the left sludge cylinder self-locking nut 206 is screwed on a left-end external thread of the double-outlet-rod double-acting hydraulic cylinder piston rod 102, and the left sludge cylinder piston 201 is in sliding sealing fit in an inner hole of the left sludge cylinder working material cylinder 204; the left sludge cylinder outer protection barrel 205 is sleeved on the excircle of the left sludge cylinder working material barrel 204, an annular cavity is arranged between the excircle of the left sludge cylinder working material barrel 204 and two ends of an inner hole of the left sludge cylinder outer protection barrel 205, and sealing parts are arranged at two ends of the left sludge cylinder working material barrel 204 and the left sludge cylinder outer protection barrel 205 in a clearance fit manner to support and seal the clearance; the left sludge cylinder three-way low-damping double-acting one-way valve 202 is characterized in that a sealing element is arranged on a right end excircle positioning step of a left sludge cylinder three-way valve body 208, the right end excircle positioning step of the left sludge cylinder three-way valve body 208 is installed in a left end inner hole of a left sludge cylinder working material cylinder 204 in a static sealing mode, and the left sludge cylinder three-way valve body 208 is connected with the left end of a left sludge cylinder outer protection cylinder 205 through a screw. The outer circle positioning step at the left end of the left sludge cylinder connecting end cover 203 is provided with a sealing element, the outer circle positioning step at the left end of the left sludge cylinder connecting end cover 203 is installed in the inner hole at the right end of the left sludge cylinder working charging barrel 204 and is in static sealing, and the left sludge cylinder connecting end cover 203 is connected with the right end of the left sludge cylinder outer protection barrel 205 through a screw; the right end inner hole of the left sludge cylinder connecting end cover 203 is provided with a sealing device and is in sliding seal with the double-rod double-acting hydraulic oil cylinder piston rod 102 extending into the hole, and the right end of the left sludge cylinder connecting end cover 203 is fixedly connected with the cylinder barrel 101 through a bolt in a flange connection mode. The left sludge cylinder three-way valve body discharge port valve core seat 210 is installed in an upper port inner hole of the left sludge cylinder three-way valve body 208, the left sludge cylinder three-way valve body discharge port valve core 209 is installed in the inner hole of the left sludge cylinder three-way valve body discharge port valve core seat 210 in a sliding fit mode, and the left sludge cylinder three-way valve body feed port valve core sealing gasket 213 is installed on an inner hole step of the left sludge cylinder three-way valve body 208 below the left sludge cylinder three-way valve body discharge port valve core 209. The left sludge cylinder three-way valve body feed inlet valve core 212 is installed in an inner hole of a valve core seat at the upper part of the feed inlet of the left sludge cylinder three-way valve body 208 in a sliding fit mode, and the left sludge cylinder three-way valve body feed inlet valve core sealing gasket 213 is installed in a stepped hole at the lower part of the feed inlet of the left sludge cylinder three-way valve body 208. 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.
Preferably, in this preferred embodiment of the present invention, the left sludge cylinder three-way valve body 208 of the left sludge three-way low damping double-acting check valve 202 of the left sludge cylinder 200 is an integrated three-way, the middle port is fixedly connected to the left sludge cylinder outer protection barrel 205 at one end of the rodless cavity of the left sludge cylinder working barrel 204, the outer circle positioning step is provided with a sealing device and an inner hole static seal of the left sludge cylinder working barrel 204 sleeved on the outer circle thereof, and the rodless cavity of the left sludge cylinder 200 is sealed to serve as a sealing end cover of the rodless cavity of the sludge pump of the present invention; a straight-through discharge port one-way valve is arranged inside the upper opening of the left sludge cylinder three-way valve body 208, and the upper opening is connected with the discharge collecting pipe 400; the lower opening of the left sludge cylinder three-way valve body 208 is internally provided with a straight-through type feed inlet one-way valve, and the lower opening is connected with the feed shunt pipe 500.
Preferably, in this preferred embodiment of the present invention, the outer circle positioning step at one end of the left sludge cylinder connecting end cover 203 is provided with a sealing device and an inner hole static seal of the left sludge cylinder working material cylinder 204 sleeved on the outer circle thereof, so as to seal the rod cavity of the left sludge cylinder 200, and serve as the sealing end cover of the rod cavity of the sludge pump; the inner hole at the other end is provided with a sealing device and a piston rod 102 of the double-rod double-acting hydraulic oil cylinder extending into the inner hole for sliding sealing, and the rod cavity of the left sludge cylinder 200 is sealed; the piston rod 102 of the double-rod double-acting hydraulic oil cylinder extends into the left sludge cylinder 200 to be connected with the left sludge cylinder piston 201, and is fixedly connected with the cylinder barrel flange of the double-rod double-acting hydraulic oil cylinder 100 through a flange.
It is worth mentioning that the left 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 check and lower feeding one-way check, and is used as a rodless cavity sealing end cover of the left sludge cylinder working material cylinder 204. The left sludge cylinder connecting end cover 203 is used as a rod cavity sealing end cover of the left sludge cylinder working material cylinder 204, and has the functions of sliding sealing with the piston rod 102 of the double-rod double-acting hydraulic oil cylinder extending into the hole of the left sludge cylinder connecting end cover and connecting with the middle double-rod 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 left 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 low; the materials directly enter the discharging collecting pipe 400 from the left sludge cylinder working material cylinder 204 through the straight-through type upper discharging port one-way valve, and the middle part of the discharging collecting pipe does not need to pass through other pipelines and bends, has short movement distance, does not change the flowing direction, does not generate turbulent flow resistance, and has small operation efficiency.
Specifically, the right sludge cylinder 300 comprises a right sludge cylinder piston 301, a right sludge cylinder connecting end cover 302, a right sludge cylinder three-way low-damping double-acting one-way valve 303, a right sludge cylinder working material cylinder 304, a right sludge cylinder external protection cylinder 305, a right sludge cylinder self-locking nut 306 and a right sludge cylinder clamp key 307.
Specifically, the right sludge cylinder three-way low-damping double-acting check valve 303 comprises a right sludge cylinder three-way valve body 388, a right sludge cylinder three-way valve body discharge port valve core 399, a right sludge cylinder three-way valve body discharge port valve core seat 31010, a right sludge cylinder three-way valve body discharge port valve core sealing gasket 31111, a right sludge cylinder three-way valve body feed port valve core 31212 and a right sludge cylinder three-way valve body feed port valve core sealing gasket 31313. The upper and lower ports of the right sludge cylinder three-way valve body 388 are respectively connected with the discharging collecting pipe 400 and the feeding flow dividing pipe 500 through flanges, and the middle port is connected with the right sludge cylinder outer protection cylinder 305 at one end of the rodless cavity of the right sludge cylinder working material cylinder 304 through a flange and serves as a rodless cavity end cover of the right sludge cylinder working material cylinder 304. Specifically, one end of the right sludge cylinder connecting end cover 302 is connected with the right sludge cylinder working material cylinder 304 and serves as a rod cavity end cover of the right sludge cylinder working material cylinder 304, and the other end of the right sludge cylinder connecting end cover is fixedly connected with the double-rod double-acting hydraulic oil cylinder 100 through a flange.
Further, the right sludge cylinder piston 301 is assembled at the right end of the double-outlet-rod double-acting hydraulic cylinder piston rod 102, the right sludge cylinder clamping key 307 is clamped in a right-end clamping key groove of the double-outlet-rod double-acting hydraulic cylinder piston rod 102, the right sludge cylinder self-locking nut 306 is screwed on a right-end external thread of the double-outlet-rod double-acting hydraulic cylinder piston rod 102, and the right sludge cylinder piston 301 is in sliding sealing fit in an inner hole of the right sludge cylinder working material barrel 304. The outer protection section of thick bamboo 305 of right side mud jar is in on the excircle of right side mud jar work feed cylinder 304, the excircle of right side mud jar work feed cylinder 304 with there is an annular cavity between the hole both ends of the outer protection section of thick bamboo 305 of right side mud jar, right side mud jar work feed cylinder 304 with the outer protection section of thick bamboo 305 both ends clearance fit of right side mud jar is provided with the sealing member and supports and seal. A sealing piece is arranged on a positioning step of the right end excircle of the right sludge cylinder connecting end cover 302 of the right sludge cylinder three-way valve body 388 and is installed in an inner hole at the left end of the right sludge cylinder working material cylinder 304 for static sealing, and the sealing piece is connected with the left end of the right sludge cylinder outer protection cylinder 305 sleeved outside the right sludge cylinder working material cylinder 304 through a screw; the left end inner hole of the right sludge cylinder connecting end cover 302 is provided with a sealing device and the piston rod 102 of the double-rod double-acting hydraulic oil cylinder extending into the hole of the sealing device in a sliding sealing mode, and the left end of the right sludge cylinder connecting end cover 302 is fixedly connected with the right end flange of the cylinder barrel 101 through a screw. The right sludge cylinder three-way low-damping double-acting one-way valve 303 is characterized in that a sealing piece is arranged on a positioning step of the excircle of the left end of a right sludge cylinder three-way valve body 388 of the right sludge cylinder three-way low-damping double-acting one-way valve 303, the right sludge cylinder three-way valve body 388 is installed in a right end inner hole of a right sludge cylinder working material cylinder 304 in a static sealing mode, and the right end of a right sludge cylinder outer protection cylinder 305, which is sleeved outside the right sludge cylinder working material cylinder 304. The right sludge cylinder three-way valve body discharge port valve core seat 31010 is installed in an upper port inner hole of the right sludge cylinder three-way valve body 388, the right sludge cylinder three-way valve body discharge port valve core 399 is installed in the right sludge cylinder three-way valve body discharge port valve core seat 31010 in a sliding fit manner, the right sludge cylinder three-way valve body discharge port valve core sealing gasket 31111 is installed on a right sludge cylinder three-way valve body 388 inner hole step below the right sludge cylinder three-way valve body discharge port valve core 399, and the right sludge cylinder three-way valve body feed port valve core 31212 is installed in a valve core seat inner hole on the upper portion of the right sludge cylinder three-way valve. The right sludge cylinder three-way valve body feed inlet spool sealing gasket 31313 is installed on the inner hole step of the right sludge cylinder three-way valve body 388 below the right sludge cylinder three-way valve body feed inlet spool 31212. 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.
Preferably, in this preferred embodiment of the present invention, the right sludge cylinder three-way valve body 388 of the right sludge cylinder three-way low damping double-acting check valve 303 of the right sludge cylinder 300 is an integrated three-way valve, a middle port is fixedly connected to the right sludge cylinder outer protective cylinder 305 at one end of the rodless cavity of the right sludge cylinder working cylinder 304, an outer circle positioning step of the middle port of the right sludge cylinder three-way valve body 388 is provided with a sealing device and an inner hole static seal of the right sludge cylinder working cylinder 304 sleeved on the outer circle thereof, and the rodless cavity of the right sludge cylinder 300 is sealed to serve as a sealing end cover of the rodless cavity of the sludge pump of the present invention. The upper opening of the right sludge cylinder three-way valve body 388 is internally provided with a straight-through discharge port one-way valve, and the upper opening is connected with the discharge collecting pipe 400. The lower opening of the right sludge cylinder three-way valve body 388 is internally provided with a straight-through type feed inlet one-way valve, and the lower opening is connected with the feeding shunt pipe 500.
Preferably, in this preferred embodiment of the present invention, the outer circle positioning step at one end of the right sludge cylinder connecting end cover 302 is provided with a sealing device and an inner hole static seal of the right sludge cylinder working material cylinder 304 sleeved on the outer circle thereof, so as to seal the rod cavity of the right sludge cylinder 300 and serve as a sealing end cover of the rod cavity of the sludge pump. And a sealing device and a piston rod 102 of the double-rod double-acting hydraulic oil cylinder extending into the hole are arranged in the inner hole at the other end of the piston rod for sliding sealing, and the piston rod cavity of the right sludge cylinder 300 is sealed. The piston rod 102 of the double-rod double-acting hydraulic oil cylinder extends into the right sludge cylinder 300 to be connected with the right sludge cylinder piston 301, and is fixedly connected with the cylinder barrel flange of the double-rod double-acting hydraulic oil cylinder 100 through a flange.
It is worth mentioning that the right sludge cylinder three-way type low-damping double-acting one-way valve 303 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 right sludge cylinder working material cylinder 304. The right sludge cylinder connecting end cover 302 is used as a rod cavity sealing end cover of the right sludge cylinder working material cylinder 304, and has the functions of sliding sealing with the piston rod 102 of the double-rod double-acting hydraulic oil cylinder extending into the hole of the right sludge cylinder connecting end cover and connecting with the middle double-rod 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 right sludge cylinder working material barrel 304 from the feed dividing pipe 500 through the straight-through lower feed port one-way valve, the middle part does not need to pass through other pipelines and an elbow, the movement distance is short, the flowing direction is not changed, turbulent flow resistance is not generated, and the operation efficiency is low; the materials directly enter the discharging collecting pipe from the right sludge cylinder working material cylinder 304 through the straight-through type upper discharging port one-way valve, and the middle part of the discharging collecting pipe does not need to pass through other pipelines and bends, has short movement distance, does not change the flowing direction, does not generate turbulent flow resistance, and has small operation efficiency.
Specifically, the left sludge cylinder three-way low-damping double-acting check valve 202 and the left sludge cylinder connecting end cover 203 are disposed at both ends of the left sludge cylinder 200. The right sludge cylinder connecting end cover 302 and the right sludge cylinder three-way type low-damping double-acting one-way valve 303 are installed at two ends of the right sludge cylinder 300. Preferably, in this preferred embodiment of the present invention, as shown in fig. 1, the left sludge cylinder three-way low damping double acting check valve 202 is installed at the left end of the left sludge cylinder 200, and the left sludge cylinder connecting end cover 203 is installed at the right end of the left sludge cylinder 200. The right sludge cylinder connecting end cover 302 and the right sludge cylinder three-way type low-damping double-acting one-way valve 303 are installed at the left end and the right end of the right sludge cylinder 300. The piston rod 102 of the double-rod double-acting hydraulic oil cylinder returns back and forth left and right to drive the left sludge cylinder piston 201 and the right sludge cylinder piston 301 at the two ends to move back and forth, and then the upper discharge port one-way valve and the lower feed port one-way valve of the three-way low-damping double-acting one-way valve at the two ends of the left sludge cylinder 200 and the right sludge cylinder 300 are opened and closed alternately to complete feeding and discharging, so that materials are pumped by the reciprocating motion.
The right cavity of the double-outlet-rod double-acting hydraulic oil cylinder 100 is supplied with oil, the piston rod 102 of the double-outlet-rod double-acting hydraulic oil cylinder pushes the piston 201 of the left sludge cylinder to move leftwards, the left sludge cylinder three-way low-damping double-acting check valve 202 at the left end of the left sludge cylinder 200 has the left sludge cylinder three-way valve body feed port valve core 212 moving downwards to press the left sludge cylinder three-way valve body feed port valve core sealing gasket 213 tightly so as to close the feed port, the left sludge cylinder three-way low-damping double-acting one-way valve 202 at the left end of the left sludge cylinder 200 has the left sludge cylinder three-way valve body discharge port valve core 209 moving upwards to separate from the left sludge cylinder three-way valve body discharge port valve core sealing gasket 211 so as to open the discharge port, the material of the rodless cavity on the left side of the left sludge cylinder piston 201 is discharged to the discharge manifold 400 installed on the left sludge cylinder 200 and the right sludge cylinder 300. Meanwhile, the rod cavity on the right side of the left sludge cylinder piston 201 sucks external cooling medium.
And oil is supplied to the right cavity of the double-rod double-acting hydraulic oil cylinder 100, the piston rod 102 of the double-rod double-acting hydraulic oil cylinder pulls the right sludge cylinder piston 301 leftwards to move, and the rod cavity on the left side of the right sludge cylinder piston 301 of the right sludge cylinder 300 discharges cooling medium. Meanwhile, the right sludge cylinder three-way low-damping double-acting check valve 303 at the right end of the right sludge cylinder 300 has the right sludge cylinder three-way low-damping double-acting valve body discharge port valve core 399 moving downwards to press the right sludge cylinder three-way valve body discharge port valve core sealing gasket 31111 so as to close the discharge port, the right sludge cylinder 300 has the right sludge cylinder three-way low-damping double-acting check valve 303 has the right sludge cylinder three-way valve body feed port valve core 31212 moving upwards to separate from the right sludge cylinder three-way valve body feed port valve core sealing gasket 31313 so as to open the feed port, and the rodless cavity at the right side of the right sludge cylinder piston 301 is sucked into the materials in the feeding flow dividing pipe 500 arranged on the left sludge cylinder 200 and the right.
The left cavity of the double-outlet-rod double-acting hydraulic oil cylinder 100 is supplied with oil, the piston rod 102 of the double-outlet-rod double-acting hydraulic oil cylinder pulls the piston 201 of the left sludge cylinder to move rightwards, the left sludge cylinder three-way low-damping double-acting check valve 202 at the left end of the left sludge cylinder 200 has the left sludge cylinder three-way valve body feed inlet valve core 212 moving upwards to separate from the left sludge cylinder three-way valve body feed inlet valve core sealing gasket 213 to open the feed inlet, the left sludge cylinder three-way low-damping double-acting one-way valve 202 at the left end of the left sludge cylinder 200 has the left sludge cylinder three-way valve body discharge port valve core 209 moving downwards to press the left sludge cylinder three-way valve body discharge port valve core sealing gasket 211 tightly so as to close the discharge port, the rodless cavity on the left side of the left sludge cylinder piston 201 sucks materials in the feeding shunt pipe 500 arranged on the left sludge cylinder 200 and the right sludge cylinder 300 to finish storing. Meanwhile, the rod cavity on the right side of the left sludge cylinder piston 201 discharges the cooling medium.
And supplying oil to the left cavity of the double-outlet-rod double-acting hydraulic oil cylinder 100, pushing the right sludge cylinder piston 301 to move rightwards by the piston rod 102 of the double-outlet-rod double-acting hydraulic oil cylinder, and sucking an external cooling medium into the rod cavity on the left side of the right sludge cylinder piston 301. Meanwhile, the right sludge cylinder three-way low-damping double-acting check valve 303 at the right end of the right sludge cylinder 300 has the right sludge cylinder three-way valve body discharge port valve core 399 moving upwards to be separated from the right sludge cylinder three-way valve body discharge port valve core gasket 31111 to open the discharge port, the right sludge cylinder three-way low-damping double-acting check valve 303 at the right end of the right sludge cylinder 300 has the right sludge cylinder three-way valve body feed port valve core 31212 moving downwards to press the right sludge cylinder three-way valve body feed port valve core gasket 31313 to close the feed port, and the material in the rodless cavity at the right side of the right sludge cylinder piston 301 is discharged to the discharge collecting pipe 400 installed on the left sludge cylinder 200 and the right sludge cylinder 300 to finish discharging.
Further, the left sludge cylinder piston 201 is installed at the left end of the double-rod double-acting hydraulic cylinder piston rod 102, and the right sludge cylinder piston 301 is installed at the right end of the double-rod double-acting hydraulic cylinder piston rod 102. Preferably, the left sludge cylinder piston 201 and the right sludge cylinder piston 301 are axially and radially fixed to the double-rod double-acting hydraulic cylinder piston rod 102 of the double-rod double-acting hydraulic cylinder 100 through the left sludge cylinder clamp key 207, and the left sludge cylinder self-locking nut 206 is axially locked and sealed. The right sludge cylinder piston 301 is axially and radially fixed on the double-rod double-acting hydraulic cylinder piston rod 102 of the double-rod double-acting hydraulic cylinder 100 through the right sludge cylinder clamp key 307, and the right sludge cylinder self-locking nut 306 is axially locked and sealed.
Preferably, in this preferred embodiment of the present invention, the left sludge cylinder piston 201 is sleeved on the positioning steps of the double-rod double-acting hydraulic cylinder piston rod 102 of the double-rod 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 left sludge cylinder clamping key 207 fixes the left sludge cylinder piston 201 at the positioning step of the double-rod double-acting hydraulic oil cylinder piston rod 102 in the axial and radial directions; the inner hole of the left sludge cylinder self-locking nut 206 is designed as a step blind hole, the inner hole step is sleeved on the excircle of the left sludge cylinder clamping key 207 to fix the left sludge cylinder clamping key 207, the inner hole is an internal thread and is screwed with an external thread of the double-rod double-acting hydraulic cylinder piston rod 102 to further fix the left sludge cylinder piston 201, and a sealing ring seal is arranged on the annular surface of the left sludge cylinder self-locking nut 206 and the left sludge cylinder piston 201, so that materials in a material cylinder cannot permeate into the joint of the left sludge cylinder piston 201 and the double-rod double-acting hydraulic cylinder piston rod 102 to pollute and corrode.
Preferably, in this preferred embodiment of the present invention, the right sludge cylinder piston 301 is sleeved on the positioning steps of the double-rod double-acting hydraulic cylinder piston rod 102 of the double-rod 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 right sludge cylinder clamping key 307 fixes the right sludge cylinder piston 301 at the positioning step of the double-rod double-acting hydraulic oil cylinder piston rod 102 in the axial and radial directions; the inner hole of the right sludge cylinder self-locking nut 306 is designed as a step blind hole, the inner hole step is sleeved on the excircle of the right sludge cylinder clamping key 307 to fix the right sludge cylinder clamping key 307, the inner hole is an internal thread and is further fixed by screwing the external thread of the double-rod double-acting hydraulic cylinder piston rod 102, the right sludge cylinder self-locking nut 306 and the annular surface attached to the right sludge cylinder piston 301 are provided with sealing rings for sealing, so that materials in a charging barrel cannot permeate into the joint of the right sludge cylinder piston 301 and the double-rod double-acting hydraulic cylinder piston rod 102 to pollute and corrode.
Further, a left side mud jar work feed cylinder 204 cover has a left side mud jar outer protection section of thick bamboo 205, the both ends of a left side mud jar outer protection section of thick bamboo 205 are provided with the cooling opening, a left side mud jar work feed cylinder 204 with there is an annular cavity between a left side mud jar outer protection section of thick bamboo 205, a left side mud jar work feed cylinder 204 with the both ends of a left side mud jar outer protection section of thick bamboo 205 are provided with the sealing member for clearance fit and support and seal.
It should be noted that, preferably, in this preferred embodiment of the present invention, the left sludge cylinder working cylinder 204 and the left sludge cylinder piston 201 are in clearance fit, so that the left sludge cylinder working cylinder 204 made of different materials can be conveniently replaced according to different wear conditions or different material properties of the left sludge cylinder working cylinder 204. Cooling ports are formed in two ends of the left sludge cylinder outer protection cylinder 205, cooling media are introduced into the annular cavity, a large amount of heat energy generated by back-and-forth movement friction during working between the left sludge cylinder working cylinder 204 and the left sludge cylinder piston 201 is taken away, and aging failure of a sealing element of the left sludge cylinder piston 201 is effectively delayed. Meanwhile, the two ends of the left sludge cylinder working material cylinder 204 and the left sludge cylinder outer protection cylinder 205 are in clearance fit, and a sealing piece is arranged for supporting and sealing, so that the left sludge cylinder working material cylinder 204 is suspended on the left sludge cylinder piston 201. Left side mud jar work feed cylinder 204 suspend in on the piston 201 of left mud jar, can effectual compensation cylindricity error that processing of left side mud jar work feed cylinder 204 caused and the axiality error of assembly can not cause the hole of left side mud jar work feed cylinder 204 with the eccentric wear phenomenon of left side mud jar piston 201 prolongs left side mud jar work feed cylinder 204 and left side mud jar piston 201 with the life of the sealing member of left side mud jar piston 201.
Further, right mud jar work feed cylinder 304 cover has right mud jar external protection section of thick bamboo 305, the both ends of right mud jar external protection section of thick bamboo 305 are provided with the cooling opening, right mud jar work feed cylinder 304 with there is an annular cavity between the right mud jar external protection section of thick bamboo 305, right mud jar work feed cylinder 304 with the both ends of right mud jar external protection section of thick bamboo 305 are provided with the sealing member for clearance fit and support and seal.
It should be noted that, preferably, in the preferred embodiment of the present invention, the right sludge cylinder working cylinder 304 and the right sludge cylinder piston 301 are in clearance fit, and the right sludge cylinder working cylinder 304 made of different materials can be conveniently replaced according to different wear conditions or different material properties of the right sludge cylinder working cylinder 304. Cooling ports are formed in two ends of the right sludge cylinder outer protection cylinder 305, cooling media are introduced into the cooling ports, a large amount of heat energy generated by back-and-forth movement friction during working between the right sludge cylinder working material cylinder 304 and the right sludge cylinder piston 301 is taken away, and aging failure of a sealing element of the right sludge cylinder piston 301 is effectively delayed. Meanwhile, the two ends of the right sludge cylinder working material cylinder 304 and the right sludge cylinder outer protection cylinder 305 are in clearance fit, and are provided with sealing parts for supporting and sealing, so that the right sludge cylinder working material cylinder 304 is suspended on the right sludge cylinder piston 301. Right side mud jar work feed cylinder 304 suspends in on the piston 301 of right side mud jar, can effectual compensation cylindricity error that the processing of right side mud jar work feed cylinder 304 caused and the axiality error of assembly can not cause the hole of right side mud jar work feed cylinder 304 with the eccentric wear phenomenon of right side mud jar piston 301 prolongs right side mud jar work feed cylinder 304 and right side mud jar piston 301 with the life of right side mud jar piston 301's sealing member.
It is worth mentioning that the double-cylinder single-feed hydraulic piston pump further comprises a stroke adjustment reversing device, and the stroke adjustment reversing device is installed between the left sludge cylinder 200 and the right sludge cylinder 300. 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 104 and the position sensor 105 are installed on the left sludge cylinder connection end cover 203 at the right end of the left sludge cylinder 200, the second sealing guide 110 and the second position sensor 109 are installed on the right sludge cylinder connection end cover 302 at the left end of the right sludge cylinder 300, the direction change valve rod 106 is installed in the sealing guide holes of the first sealing guide 104 and the second sealing guide 110, and the position detection sensor 108 is installed on the direction change valve rod 106.
It should be noted that the effective strokes at the two ends of the double-rod 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-rod double-acting hydraulic cylinder 100 moves back and forth at a high speed, the left sludge cylinder piston 201 and the right sludge cylinder piston 301 cannot contact the sealing end covers at the two ends of the sludge cylinder, and 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-out rod, double-acting hydraulic ram 100 is adjusted by adjusting the mounting position of the first position sensor 105 mounted on the left sludge cylinder connecting end cap 203. The effective stroke of the right end of the double-rod double-acting hydraulic oil cylinder 100 is adjusted by adjusting the mounting position of the second position sensor 109 mounted on the right sludge cylinder connecting end cover 302, so that when the double-rod double-acting hydraulic oil cylinder 100 moves back and forth at a high speed, the piston of the piston rod 102 of the double-rod double-acting hydraulic oil cylinder cannot contact the first guide sleeve 103 and the second guide sleeve 107, and cylinder collision caused by large movement inertia is avoided.
And oil is supplied to the right cavity of the double-rod double-acting hydraulic oil cylinder 100, the piston rod 102 of the double-rod double-acting hydraulic oil cylinder pulls the right sludge cylinder piston 301 leftwards to move, and the right sludge cylinder piston 301 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 leftwards. When the position detection sensor 108 mounted on the reversing valve rod 106 is close to the first position sensor 105 mounted on the left sludge cylinder connecting end cover 203, the first position sensor 105 sends a signal to a hydraulic system to reverse the reversing valve, so as to supply oil to the left cavity of the double-rod double-acting hydraulic oil cylinder 100. The piston rod 102 of the double-rod double-acting hydraulic oil cylinder pulls the left sludge cylinder piston 201 rightwards to move, and the left sludge cylinder piston 201 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 sensor 108 mounted on the reversing valve rod 106 is close to the second position sensor 109 mounted on the right sludge cylinder connecting end cover 302, the second position sensor 109 sends a signal to a hydraulic system to reverse the reversing valve, so as to supply oil to the right cavity of the double-rod 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 (10)

1. A double-cylinder single-feeding hydraulic piston pump is characterized by comprising a double-rod double-acting hydraulic oil cylinder and two sludge cylinders, wherein the two sludge cylinders are respectively installed at two ends of the double-rod double-acting hydraulic oil cylinder, the double-rod double-acting hydraulic oil cylinder is provided with a double-rod double-acting hydraulic oil cylinder piston rod, the two sludge cylinders are respectively provided with a sludge cylinder piston, each sludge cylinder piston of the two sludge cylinders is respectively installed at two ends of the double-rod double-acting hydraulic oil cylinder piston rod, a three-way low-damping double-acting check valve is installed at one end of each sludge cylinder, a sludge cylinder connecting end cover is installed at the other end of each sludge cylinder, the double-rod double-acting hydraulic oil cylinder piston rod is used for conveying back work to push the sludge cylinder pistons of the two sludge cylinders at two ends to move back and forth, and an upper discharge port check valve and a lower feed port check valve of the three-way low-damping double-acting check valve of each sludge The switch is closed to complete feeding and discharging, and the reciprocating motion is adopted to pump materials;
each sludge cylinder is also provided with a sludge cylinder working material cylinder and a sludge cylinder external protection cylinder, wherein the sludge cylinder working material cylinder is sleeved in the sludge cylinder external protection cylinder; the double-cylinder single-feeding hydraulic piston pump also comprises a discharging collecting pipe and a feeding flow dividing pipe; the sludge cylinder three-way type low-damping double-acting one-way valve comprises a sludge cylinder 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 and connected with the discharge collecting pipe, and a straight-through feed port one-way valve is arranged inside a lower opening of the sludge cylinder three-way valve body and connected with the feed dividing pipe; the outer circle positioning step of the middle opening of the three-way valve body is provided with a sealing device and is installed in an inner hole at the end part of the sludge cylinder working material cylinder for static sealing, the middle opening of the sludge cylinder three-way valve body is connected with a rodless cavity of the sludge cylinder working material cylinder and the sludge cylinder outer protection cylinder through a flange and used as a rodless cavity end cover of the sludge cylinder working material cylinder, and a flange at the inner side of the flange is positioned in an annular cavity formed by the sludge cylinder working material cylinder and the sludge cylinder outer protection cylinder;
wherein the sludge cylinder 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 sealing gasket, a sludge cylinder three-way valve body feed port valve core and a sludge cylinder three-way valve body feed port valve core sealing gasket, wherein the sludge cylinder three-way valve body discharge port valve core seat is installed in an upper opening 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 sealing 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, the sealing gasket of the valve core of the feed port of the three-way valve body of the sludge cylinder is arranged in a step hole at the lower part of the valve core of the feed port of the three-way valve body of the sludge cylinder;
the double-cylinder single-feeding hydraulic piston pump further comprises a stroke adjusting reversing device, and the stroke adjusting reversing device is arranged between the two sludge cylinders; the stroke adjusting and 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, wherein the first sealing guide sleeve and the first position sensor are mounted at one end of one of the sludge cylinders, the second position sensor and the second sealing guide sleeve are mounted at the other end of the other sludge 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.
2. The dual-cylinder single-feed hydraulic piston pump of claim 1, wherein the three-way low-damping double-acting check valve is an integrated structure with upper discharge one-way check and lower feed one-way check functions.
3. The dual cylinder single feed hydraulic piston pump of claim 1, wherein the sludge cylinder piston of each sludge cylinder and the dual out rod dual acting hydraulic cylinder piston rod of the dual out rod dual acting hydraulic cylinder are axially and radially fixed by a snap key, a self-sealing nut axially locks and seals.
4. The dual cylinder single feed hydraulic piston pump of claim 1, wherein the dual out-rod, dual acting hydraulic ram piston rods extend into each of the sludge cylinder connecting end caps to connect each of the sludge cylinder pistons.
5. The dual-cylinder single-feed hydraulic piston pump of claim 1, wherein each of the sludge cylinders further comprises a sludge cylinder self-locking nut and a sludge cylinder snap-key, wherein the sludge cylinder snap-key is snapped into a snap-key slot at an end of a piston rod of the dual-rod dual-acting hydraulic cylinder, and the sludge cylinder self-locking nut is screwed onto an external thread at an end of a piston rod of the dual-rod dual-acting hydraulic cylinder.
6. The two-cylinder single-feed hydraulic piston pump as claimed in claim 1, wherein the discharge manifold is connected to the discharge ports of the respective sludge cylinders through a flange, and the feed manifold is connected to the feed ports of the respective sludge cylinders through a flange.
7. The double-cylinder single-feed hydraulic piston pump as claimed in claim 1, wherein cooling ports are provided at both ends of the sludge cylinder outer protecting cylinder, 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 clearance fit.
8. The double-cylinder single-feed hydraulic piston pump as claimed in claim 7, wherein the sludge cylinder piston is fitted in the inner bore of the sludge cylinder working cylinder in a sliding and sealing manner, the sludge cylinder outer protecting cylinder is sleeved on the excircle of the sludge cylinder working cylinder, and the annular cavity is formed between the excircle of the sludge cylinder working cylinder and two ends of the inner bore of the sludge cylinder outer protecting cylinder.
9. The double-cylinder single-feed hydraulic piston pump as claimed in claim 1, wherein the sludge cylinder three-way type low-damping double-acting check valve comprises a sludge cylinder three-way valve body, the middle port of the sludge cylinder three-way valve body is connected with the sludge cylinder working material cylinder, an outer circle positioning step of the middle port of the sludge cylinder three-way valve body is provided with a sealing member and is installed in an inner hole of the end part of the sludge cylinder working material cylinder for static sealing, and the sludge cylinder three-way valve body is connected with the end part of the sludge cylinder outer protection cylinder.
10. The dual cylinder single feed hydraulic piston pump of claim 1, wherein the dual-out rod dual acting hydraulic cylinder further comprises a cylinder, a bumper plunger, a first guide sleeve and a second guide sleeve, wherein the dual-out rod dual acting hydraulic cylinder piston rod and the bumper plunger are assembled within the cylinder, the first guide sleeve is installed at one end of the cylinder, the second guide sleeve is installed at the other end of the cylinder, a piston of the dual-out rod dual acting hydraulic cylinder piston rod is in sliding sealing fit with an inner bore of the cylinder, and a piston rod of the dual-out rod dual acting hydraulic cylinder piston rod is in sliding sealing fit with inner bores of the first guide sleeve and the second guide sleeve.
CN201911374620.0A 2019-12-27 2019-12-27 Double-cylinder single-feeding hydraulic piston pump Active CN111140459B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911374620.0A CN111140459B (en) 2019-12-27 2019-12-27 Double-cylinder single-feeding hydraulic piston pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911374620.0A CN111140459B (en) 2019-12-27 2019-12-27 Double-cylinder single-feeding hydraulic piston pump

Publications (2)

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