CN108612681A - A kind of hydraulic booster pump - Google Patents

A kind of hydraulic booster pump Download PDF

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Publication number
CN108612681A
CN108612681A CN201810479373.XA CN201810479373A CN108612681A CN 108612681 A CN108612681 A CN 108612681A CN 201810479373 A CN201810479373 A CN 201810479373A CN 108612681 A CN108612681 A CN 108612681A
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CN
China
Prior art keywords
hydraulic fluid
fluid port
cap
mouthfuls
valve
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CN201810479373.XA
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Chinese (zh)
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CN108612681B (en
Inventor
邵玉刚
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东莞海特帕沃液压科技有限公司
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Publication of CN108612681A publication Critical patent/CN108612681A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B3/00Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors

Abstract

The invention discloses a kind of hydraulic booster pumps, including internal slide to be connected with the pump housing of piston, and the left end of the pump housing is equipped with left end cap, and the right end of the pump housing is equipped with right end cap;The plunger being connected with the piston is slidably connected in left end cap;It is vertically equipped with valve opening in the right end cap, is equipped with the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port, the 4th hydraulic fluid port, the 5th hydraulic fluid port in right end cap successively from top to bottom, spool is slidably connected in the valve opening;It is equipped with plunger hole in right end cap, control plunger is slidably connected in plunger hole;The side of spool is equipped with first shoulder, the second shoulder and third shoulder;The upper end of valve opening is equipped with upper end cover, and upper control chamber is formed between the first shoulder and the upper end cover, controls and forms lower control chamber between the lower end of plunger and the lower end of the plunger hole;The spill valve for controlling spool up and down motion is additionally provided in right end cap;The booster pump is not only simple in structure, and is not necessarily to electric control.

Description

A kind of hydraulic booster pump
Technical field
The present invention relates to supercharging pump technical field, specially a kind of hydraulic boosters that reliably can be automatically continuously pressurized Pump.
Background technology
Hydraulic booster pump is different using piston both ends active area and the identical principle of stress size, and hydraulic pressure is put Low pressure can be increased to 200MPa or more by a kind of big ultrahigh-pressure hydraulic element, hydraulic booster pump.The country is adopted at present Conventional hydraulic booster pump is the continuous commutation by solenoid directional control valve, and control booster pump moves back and forth continuous output high pressure, Complicated, the displacement sensor and automatically controlled component, volume and weight for needing setting complicated are huge, it has not been convenient to carry, easy It is difficult to use in terms of combustion hazardous applications and portable mechanism, such as natural gas compressing substation, garbage compression station, oil mine, coal Perfusion etc. has a requirement of explosion proof, objective requirement hydraulic booster pump can meet be not necessarily to personnel's short distance intervention can voluntarily commutate and Also meets the needs of explosion-proof.
Invention content
(1) technical problems to be solved
It is an object of the invention to overcome the defect in the prior art, provide one kind simple in structure, easy to process, Er Qieneng Enough reliable hydraulic booster pumps being automatically continuously pressurized.
(2) technical solution
To achieve the above object, the present invention provides a kind of hydraulic booster pumps, including internal slide to be connected with the pump of piston The left end of body, the pump housing is equipped with left end cap, and the right end of the pump housing is equipped with right end cap;Along level side in the left end cap To equipped with the mounting hole being connected to the pump housing, the plunger being connected with the piston is slidably connected in the mounting hole;It is described Left piston control chamber is formed between the left end of piston and the left end cap, is formed between the right end of the piston and the right end cap Right piston control chamber forms high pressure chest between the left end of the mounting hole and the left end of the plunger;
It is vertically equipped with valve opening in the right end cap, is equipped with and the valve opening successively from top to bottom in the right end cap The first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port, the 4th hydraulic fluid port, the 5th hydraulic fluid port of connection, are slidably connected in the valve opening and are useful for controlling The spool of liquefaction mouth break-make;The plunger hole being connected to the valve opening is equipped in the right end cap in the lower end of the valve opening, it is described The control plunger coaxial with the spool is slidably connected in plunger hole;The cross-sectional area of the control plunger is less than the spool Cross-sectional area;Its axial direction of the side upper edge of the spool is equipped with first shoulder, the second shoulder and third platform successively from the top down Shoulder;The upper end of the valve opening is equipped with upper end cover, forms upper control chamber between the first shoulder and the upper end cover, and described the Oil back chamber is formed between three shoulders and the lower end of the valve opening, between the lower end and the lower end of the plunger hole of the control plunger Form lower control chamber;When the spool is located at raised state, the first hydraulic fluid port and the second hydraulic fluid port communicate, third hydraulic fluid port and the 4th oil Mouth communicates;When the spool is located at lower shifting state, the second hydraulic fluid port and third hydraulic fluid port communicate, the 4th hydraulic fluid port and the 5th hydraulic fluid port phase It is logical;
The hydraulic unloading valve module for controlling upper control chamber off-load is equipped in the right end cap;
The side of the pump housing is equipped with P mouthfuls and T mouthfuls;Described P mouthfuls by be arranged in the pump housing and right end cap One runner is communicated with the third hydraulic fluid port, the third hydraulic fluid port by the tenth runner that is arranged in the right end cap with it is described under Control chamber communicates;The described T mouthfuls second flow channel and the 5th hydraulic fluid port and oil return by being arranged in the pump housing and the right end cap Chamber communicates;The right piston control chamber is communicated by the way that the third flow channel in the pump housing is arranged with the 4th hydraulic fluid port;It is described First hydraulic fluid port is communicated by the 4th runner being arranged in the right end cap with the 5th hydraulic fluid port;Second hydraulic fluid port is by setting The 11st runner set in the right end cap is connected to the upper control chamber, and damper is equipped in the 11st runner, and The inlet and outlet of damper is communicated with the second hydraulic fluid port and upper control chamber respectively;
Described P mouthfuls is communicated by the in line check valve component being arranged in the left end cap with the high pressure chest, and described The oil inlet and oil outlet of in line check valve component are communicated with described P mouthfuls and the high pressure chest respectively;It is equipped in the left end cap H mouths for the high pressure cavity pressure oil to be discharged, the left end cap is interior to be equipped with oil outlet one-way valve at the H mouths, and The oil inlet and oil outlet of the oil outlet one-way valve are communicated with the high pressure chest and described H mouthfuls respectively;
The 5th runner for being connected to described T mouthfuls and the left piston control chamber is equipped in the pump housing;
The spill valve to move up and down for controlling the spool is additionally provided on the right end cap.
Through the above technical solutions, when the hydraulic booster pump work, piston-initial-position is located at Far Left, and spool is located at upper Shifting state, P mouthfuls are connected with low pressure oil way pressure oil, and T mouthfuls are connected directly with fuel tank, and H mouthfuls are booster pump output oil port, are led to when P mouthfuls After oil, P mouthfuls of fluid enters right piston control chamber through first flow, third hydraulic fluid port, the 4th hydraulic fluid port, third flow channel, while P mouthfuls Fluid enters lower control chamber by first flow, third hydraulic fluid port, the tenth runner so that spool keeps raised state;Due to piston Positioned at leftmost position, therefore P mouthfuls of pressure can gradually rise so that spill valve is opened, and P mouthfuls of fluid enters upper control Chamber, since the cross-sectional area of spool is more than the cross-sectional area of control plunger, spool starts to transport downwards under the action of resultant force It is dynamic, while the fluid in oil back chamber flows back to T hydraulic fluid ports through second flow channel;Spool moves down so that second hydraulic fluid port and third oil Mouth communicates, and the 4th hydraulic fluid port and the 5th hydraulic fluid port communicate, and such P mouthfuls of fluid enters high pressure chest through in line check valve component, acts on On plunger and then plunger is pushed to move right, the fluid in right piston control chamber passes through third flow channel, the 4th hydraulic fluid port, the 5th oil Mouthful, second flow channel flow to T mouthful, this process high pressure chest completes filling liquid, at the same P mouthfuls of fluid pass through first flow, third hydraulic fluid port, Second hydraulic fluid port, the 11st runner enter in upper control chamber so that spool keeps lower shifting state;After piston motion is to right end, P mouthfuls Pressure gradually rises so that and spill valve is opened, and spool moves upwardly so that first hydraulic fluid port and the second hydraulic fluid port communicate, the Three hydraulic fluid ports and the 4th hydraulic fluid port communicate, and such P mouthfuls of fluid enters the right side through first flow, third hydraulic fluid port, the 4th hydraulic fluid port, third flow channel In piston control chamber, since the diameter of piston is more than the diameter of plunger, piston pushes plunger to move downward the fluid of high pressure chest It is discharged by H mouthfuls of superchargings through oil outlet one-way valve, this process is pressurization, while P mouthfuls of fluid is oily by first flow, third Mouth, the tenth runner enter lower control chamber so that spool keeps raised state;When piston motion is to left end initial position, just open Begun above-mentioned cyclic process, as long as P mouthfuls have a fluid entrance, piston it is reciprocal carry out movement supercharging, be not necessarily to automatically controlled control;It should Hydraulic booster pump configuration is simple, easy to process, can be adapted for the operating mode for having requirement of explosion proof.
In further technical solution, the spill valve includes the first overflow valve and the second overflow valve, and described first The oil inlet of overflow valve is communicated by the 6th runner being arranged in the right end cap with the 4th hydraulic fluid port, first overflow Valve oil outlet passes through the 7th runner that is arranged in the right end cap and the upper control chamber and the hydraulic unloading valve module Oil inlet communicates;The oil inlet of second overflow valve passes through the 8th runner being arranged in the right end cap and second oil Mouth communicates, and the second overflow valve oil outlet passes through the 9th runner being arranged in the right end cap and the hydraulic unloading valve group The control port of part communicates;The oil outlet of the hydraulic unloading valve module is communicated with T mouthfuls.
(3) advantageous effect
Compared with prior art, technical scheme of the present invention has the following advantages:
When the hydraulic booster pump work, piston-initial-position is located at Far Left, and spool is located at raised state, P mouthfuls and low pressure Oil circuit pressure oil phase connects, and T mouthfuls are connected directly with fuel tank, and H mouthfuls are booster pump output oil port, after P mouthfuls of logical oil, P mouthfuls of fluid warp First flow, third hydraulic fluid port, the 4th hydraulic fluid port, third flow channel enter right piston control chamber, while P mouthfuls of fluid is by first-class Road, third hydraulic fluid port, the tenth runner enter lower control chamber so that spool keeps raised state;Since piston is located at leftmost position, Therefore P mouthful pressure can gradually rise so that spill valve is opened, and P mouthfuls of fluid is transversal due to spool into upper control chamber Area is more than the cross-sectional area of control plunger, therefore spool starts to move downward under the action of resultant force, while in oil back chamber Fluid flows back to T hydraulic fluid ports through second flow channel;Spool moves down so that second hydraulic fluid port and third hydraulic fluid port communicate, the 4th hydraulic fluid port and 5th hydraulic fluid port communicates, and such P mouthfuls of fluid enters high pressure chest through in line check valve component, acts on plunger and then pushes plunger It moving right, the fluid in right piston control chamber flows to T mouthfuls by third flow channel, the 4th hydraulic fluid port, the 5th hydraulic fluid port, second flow channel, This process high pressure chest completes filling liquid, while P mouthfuls of fluid passes through first flow, third hydraulic fluid port, the second hydraulic fluid port, the 11st runner Into in upper control chamber so that spool keeps lower shifting state;After piston motion is to right end, P mouthfuls of pressure gradually rise so that overflow It flows valve module to open, spool moves upwardly so that first hydraulic fluid port and the second hydraulic fluid port communicate, third hydraulic fluid port and the 4th hydraulic fluid port phase Logical, such P mouthfuls of fluid enters through first flow, third hydraulic fluid port, the 4th hydraulic fluid port, third flow channel in right piston control chamber, due to The diameter of piston is more than the diameter of plunger, and piston pushes plunger to move downward the fluid of high pressure chest through oil outlet one-way valve by H mouthfuls Supercharging discharge, this process is pressurization, while P mouthfuls of fluid enters lower control by first flow, third hydraulic fluid port, the tenth runner Chamber processed so that spool keeps raised state;When piston motion is to left end initial position, above-mentioned cyclic process has been begun to, As long as P mouthfuls have a fluid entrance, piston it is reciprocal carry out movement supercharging, be not necessarily to automatically controlled control;The hydraulic booster pump configuration is simple, It is easy to process, it can be adapted for the operating mode for having requirement of explosion proof.
Description of the drawings
Fig. 1 is the structural schematic diagram that hydraulic booster pumps in the present embodiment;
Fig. 2 is the diagrammatic cross-section at B-B in Fig. 1;
Fig. 3 is the diagrammatic cross-section at C-C in Fig. 2.
Specific implementation mode
- 3 are please referred to Fig.1, the present invention provides a kind of hydraulic booster pump, including internal slide is connected with the pump housing 1 of piston 3, The left end of the pump housing 1 is equipped with left end cap 2, and the right end of the pump housing 1 is equipped with right end cap 4;Along level in the left end cap 2 Direction is equipped with the mounting hole 201 that is connected to the pump housing 1, slidably connects in the mounting hole 201 and is connected with the piston 3 Plunger 5;Left piston control chamber 1a, the right end of the piston 3 and institute are formed between the left end of the piston 3 and the left end cap 2 It states and forms right piston control chamber 1b between right end cap 4, formed between the left end of the mounting hole 201 and the left end of the plunger 5 High pressure chest 2a.
It is vertically equipped with valve opening 401 in the right end cap 4, is equipped with and institute successively from top to bottom in the right end cap 4 State the first hydraulic fluid port 4.1, the second hydraulic fluid port 4.2, third hydraulic fluid port 4.3, the 4th hydraulic fluid port 4.4, the 5th hydraulic fluid port 4.5 of the connection of valve opening 401, institute It states to be slidably connected in valve opening 401 and is useful for the spool 6 of control port break-make;In the lower end of the valve opening 401 in the right end cap 4 Equipped with the plunger hole 402 being connected to the valve opening 401, the control coaxial with the spool 6 is slidably connected in the plunger hole 402 Plunger 7 processed;The cross-sectional area of the control plunger 7 is less than the cross-sectional area of the spool 6;The side upper edge of the spool 6 its It is axial to be equipped with first shoulder 6.1, the second shoulder 6.2 and third shoulder 6.3 successively from the top down;Pacify the upper end of the valve opening 401 Upper control chamber 4a, 6.3 He of third shoulder are formed equipped with upper end cover 8, between the first shoulder 6.1 and the upper end cover 8 Form oil back chamber 4b between the lower end of the valve opening 401, the lower end of the control plunger 7 and the lower end of the plunger hole 402 it Between form lower control chamber 4c;When the spool 6 is located at raised state, the first hydraulic fluid port 4.1 and the second hydraulic fluid port 4.2 communicate, third Hydraulic fluid port 4.3 and the 4th hydraulic fluid port 4.4 communicate;When the spool 6 is located at lower shifting state, 4.3 phase of the second hydraulic fluid port 4.2 and third hydraulic fluid port Logical, the 4th hydraulic fluid port 4.4 and the 5th hydraulic fluid port 4.5 communicate.The hydraulic control for controlling upper control chamber 4a off-loads is equipped in the right end cap 4 Unloading valve component 9.
The side of the pump housing 1 is equipped with P mouthfuls and T mouthfuls;Described P mouthfuls by being arranged in the pump housing 1 and right end cap 4 First flow 1.1 is communicated with the third hydraulic fluid port 4.3, and the third hydraulic fluid port 4.3 is by being arranged the in the right end cap 4 the tenth Runner 1.10 is communicated with the lower control chamber 4c;Described T mouthfuls by being arranged second in the pump housing 1 and the right end cap 4 Runner 1.2 is communicated with the 5th hydraulic fluid port 4.5 and oil back chamber 4b;The right piston control chamber 1b is by being arranged in the pump housing 1 Third flow channel 1.3 is communicated with the 4th hydraulic fluid port 4.4;First hydraulic fluid port 4.1 is by being arranged the in the right end cap 4 the 4th Runner 1.4 is communicated with the 5th hydraulic fluid port 4.5;Second hydraulic fluid port 4.2 is first-class by the be arranged in the right end cap 4 the tenth Road 1.11 is connected to the upper control chamber 4a, and damper 10, and the import of damper 10 are equipped in the 11st runner 1.11 It is communicated respectively with the second hydraulic fluid port 4.2 and upper control chamber 4a with outlet.
Described P mouthfuls is communicated by the in line check valve component 11 being arranged in the left end cap 2 with the high pressure chest 2a, and The oil inlet and oil outlet of the in line check valve component 11 are communicated with described P mouthfuls and the high pressure chest 2a respectively;The left end It is equipped with the H mouths for pressure oil in the high pressure chest 2a to be discharged in lid 2, is equipped with out at the H mouths in the left end cap 2 Oily check valve 12, and the oil inlet of the oil outlet one-way valve 12 and oil outlet are communicated with the high pressure chest 2a and described H mouthfuls respectively. The 5th runner 1.5 for being connected to described T mouthfuls and the left piston control chamber 1a is equipped in the pump housing 1;On the right end cap 4 It is additionally provided with the spill valve for controlling the up and down motion of the spool 6.
The spill valve includes the first overflow valve 13 and the second overflow valve 14, the oil inlet of first overflow valve 13 It is communicated with the 4th hydraulic fluid port 4.4 by the 6th runner 1.6 being arranged in the right end cap 4, first overflow valve 13 goes out Hydraulic fluid port passes through the 7th runner 1.7 and the upper control chamber 4a and the hydraulic unloading valve module 9 that are arranged in the right end cap 4 Oil inlet communicate;The oil inlet of second overflow valve 14 passes through the 8th runner 1.8 and the institute that are arranged in the right end cap 4 It states the second hydraulic fluid port 4.2 to communicate, 14 oil outlet of the second overflow valve passes through the 9th runner 1.9 that is arranged in the right end cap 4 It is communicated with the control port of the hydraulic unloading valve module 9;The oil outlet of the hydraulic unloading valve module 9 is communicated with T mouthfuls.
Using when by the present invention P mouths be connected with low pressure oil way pressure oil, T mouthfuls are connected directly with fuel tank, H mouthfuls be booster pump Output oil port, 3 initial position of piston are located at the Far Left in Fig. 1, and spool 6 is located at raised state, after P mouthfuls of logical oil, P mouthfuls of oil Liquid enters right piston control chamber 1b, while P mouthfuls through first flow 1.1, third hydraulic fluid port 4.3, the 4th hydraulic fluid port 4.4, third flow channel 1.3 Fluid by first flow 1.1, third hydraulic fluid port 4.3, the tenth runner 1.10 enter lower control chamber 4c so that spool 6 keep on Shifting state;Since piston 3 is located at leftmost position, P mouthfuls of pressure can gradually rise so that the first overflow valve 13 is opened, P mouthfuls Fluid by first flow 1.1, third hydraulic fluid port 4.3, the 4th hydraulic fluid port 4.4, the 6th runner 1.6, the first overflow valve the 13, the 7th stream Road 1.7 enters upper control chamber 4a, since the cross-sectional area of spool 6 is more than the cross-sectional area of control plunger 7,
Therefore spool 6 starts to move downward under the action of resultant force, while the fluid in oil back chamber 4b is through second flow channel 1.2 Flow back to T hydraulic fluid ports;Spool 6 moves down so that second hydraulic fluid port 4.2 and third hydraulic fluid port 4.3 communicate, the 4th hydraulic fluid port 4.4 and the 5th Hydraulic fluid port 4.5 communicates, and such P mouthfuls of fluid enters high pressure chest 2a through in line check valve component 11, acts on plunger 5 and then pushes Plunger 5 moves right, the fluid in right piston control chamber 1b by third flow channel 1.3, the 4th hydraulic fluid port 4.4, the 5th hydraulic fluid port 4.5, Second flow channel 1.2 flows to T mouthfuls, this process high pressure chest 2a completes filling liquid, while P mouthfuls of fluid passes through first flow 1.1, third Hydraulic fluid port 4.3, the second hydraulic fluid port 4.2, the 11st runner 1.11 enter in upper control chamber 4a so that spool 6 keeps lower shifting state;Work as work After plug 3 moves to right end, P mouthfuls of pressure gradually rise so that the second overflow valve 14 is opened, and P mouthfuls of fluid passes through first flow 1.1, third hydraulic fluid port 4.3, the second hydraulic fluid port 4.2, the 8th runner 1.8, the second overflow valve 14, the 9th runner 1.9 enter hydraulic unloading The control port of valve module 9 so that hydraulic unloading valve module 9 is opened, and the pressure oil in upper control chamber 4a passes through the 7th runner 1.7, the oil inlet of hydraulic unloading valve module 9, hydraulic unloading valve module 9 oil outlet flow to T mouthfuls;At the same time P mouthfuls of fluid Enter lower control chamber 4c by first flow 1.1, third hydraulic fluid port 4.3, the tenth runner 1.10, and then spool 6 is pushed to move up So that first hydraulic fluid port, 4.1 and second hydraulic fluid port 4.2 communicates, third hydraulic fluid port 4.3 and the 4th hydraulic fluid port 4.4 communicate, such P mouthfuls of oil Liquid enters through first flow 1.1, third hydraulic fluid port 4.3, the 4th hydraulic fluid port 4.4, third flow channel 1.3 in right piston control chamber 1b, due to The diameter of piston 3 is more than the diameter of plunger 5, and piston 3 pushes plunger 5 to move downward the fluid by high pressure chest 2a through oil outlet one-way valve 12 are discharged by H mouthfuls of superchargings, this process is pressurization, while P mouthful of fluid passes through first flow 1.1, third hydraulic fluid port 4.3, the Ten runners 1.10 enter lower control chamber 4c so that spool 6 keeps raised state;When piston 3 moves to left end initial position, just Started above-mentioned cyclic process, as long as P mouthfuls have a fluid entrance, piston 3 it is reciprocal carry out movement supercharging, be not necessarily to automatically controlled control System;The hydraulic booster pump configuration is simple, easy to process, can be adapted for the operating mode for having requirement of explosion proof.
Only it is the preferred embodiment of the present invention described in top, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications Also it should be regarded as protection scope of the present invention.

Claims (2)

1. a kind of hydraulic booster pump, which is characterized in that be connected with the pump housing of piston, the left end peace of the pump housing including internal slide Equipped with left end cap, the right end of the pump housing is equipped with right end cap;It is equipped in the left end cap and connects with the pump housing in the horizontal direction Logical mounting hole slidably connects the plunger being connected with the piston in the mounting hole;The left end of the piston and the left side Left piston control chamber is formed between end cap, and right piston control chamber is formed between the right end of the piston and the right end cap, it is described High pressure chest is formed between the left end of mounting hole and the left end of the plunger;
It is vertically equipped with valve opening in the right end cap, is equipped in the right end cap and is connected to the valve opening successively from top to bottom The first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port, the 4th hydraulic fluid port, the 5th hydraulic fluid port, be slidably connected in the valve opening and be useful for control oil The spool of mouth break-make;The plunger hole being connected to the valve opening, the plunger are equipped in the right end cap in the lower end of the valve opening The control plunger coaxial with the spool is slidably connected in hole;The cross-sectional area of the control plunger is less than the cross of the spool Sectional area;Its axial direction of the side upper edge of the spool is equipped with first shoulder, the second shoulder and third shoulder successively from the top down;Institute The upper end for stating valve opening is equipped with upper end cover, and upper control chamber, the third platform are formed between the first shoulder and the upper end cover Oil back chamber is formed between shoulder and the lower end of the valve opening, is formed between the lower end and the lower end of the plunger hole of the control plunger Lower control chamber;When the spool is located at raised state, the first hydraulic fluid port and the second hydraulic fluid port communicate, third hydraulic fluid port and the 4th hydraulic fluid port phase It is logical;When the spool is located at lower shifting state, the second hydraulic fluid port and third hydraulic fluid port communicate, and the 4th hydraulic fluid port and the 5th hydraulic fluid port communicate;
The hydraulic unloading valve module for controlling upper control chamber off-load is equipped in the right end cap;
The side of the pump housing is equipped with P mouthfuls and T mouthfuls;Described P mouthfuls first-class in the pump housing and right end cap by being arranged Road is communicated with the third hydraulic fluid port, and the third hydraulic fluid port passes through the tenth runner being arranged in the right end cap and the lower control Chamber communicates;Described T mouthfuls by being arranged the second flow channel in the pump housing and the right end cap and the 5th hydraulic fluid port and oil back chamber phase It is logical;The right piston control chamber is communicated by the way that the third flow channel in the pump housing is arranged with the 4th hydraulic fluid port;Described first Hydraulic fluid port is communicated by the 4th runner being arranged in the right end cap with the 5th hydraulic fluid port;Second hydraulic fluid port is existed by setting The 11st runner in the right end cap is connected to the upper control chamber, damper is equipped in the 11st runner, and damp The inlet and outlet of device is communicated with the second hydraulic fluid port and upper control chamber respectively;
Described P mouthfuls is communicated by the in line check valve component being arranged in the left end cap with the high pressure chest, and the oil inlet The oil inlet and oil outlet of check valve assembly are communicated with described P mouthfuls and the high pressure chest respectively;It is equipped with and is used in the left end cap The H mouths that the high pressure cavity pressure oil is discharged, the left end cap is interior to be equipped with oil outlet one-way valve at the H mouths, and described The oil inlet and oil outlet of oil outlet one-way valve are communicated with the high pressure chest and described H mouthfuls respectively;
The 5th runner for being connected to described T mouthfuls and the left piston control chamber is equipped in the pump housing;
The spill valve to move up and down for controlling the spool is additionally provided on the right end cap.
2. hydraulic booster according to claim 1 pump, which is characterized in that the spill valve include the first overflow valve and The oil inlet of second overflow valve, first overflow valve passes through the 6th runner being arranged in the right end cap and the 4th oil Mouth communicates, and the first overflow valve oil outlet passes through the 7th runner being arranged in the right end cap and the upper control chamber and institute The oil inlet for stating hydraulic unloading valve module communicates;The oil inlet of second overflow valve by be arranged in the right end cap Eight runners are communicated with second hydraulic fluid port, and the second overflow valve oil outlet passes through the 9th runner that is arranged in the right end cap It is communicated with the control port of the hydraulic unloading valve module;The oil outlet of the hydraulic unloading valve module is communicated with T mouthfuls.
CN201810479373.XA 2018-05-18 2018-05-18 Hydraulic booster pump Active CN108612681B (en)

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CN108612681B CN108612681B (en) 2019-12-20

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CN109611305A (en) * 2018-12-01 2019-04-12 李军 A kind of booster water pump

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CN201057181Y (en) * 2007-10-27 2008-05-07 常德信诚液压有限公司 Balancing brake valve
JP2011064166A (en) * 2009-09-18 2011-03-31 Advics Co Ltd Piston pump
CN205806047U (en) * 2016-06-16 2016-12-14 宁波汉商液压有限公司 A kind of single-acting automatic reciprocating type supercharger

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Publication number Priority date Publication date Assignee Title
CN1117118A (en) * 1994-08-23 1996-02-21 刘恩兆 Hydraulic automatically-controlled reciprocating pump
CN201057181Y (en) * 2007-10-27 2008-05-07 常德信诚液压有限公司 Balancing brake valve
JP2011064166A (en) * 2009-09-18 2011-03-31 Advics Co Ltd Piston pump
CN205806047U (en) * 2016-06-16 2016-12-14 宁波汉商液压有限公司 A kind of single-acting automatic reciprocating type supercharger

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109611305A (en) * 2018-12-01 2019-04-12 李军 A kind of booster water pump

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