CN108895053A - A kind of plug-in No leakage pressure reducing valve - Google Patents
A kind of plug-in No leakage pressure reducing valve Download PDFInfo
- Publication number
- CN108895053A CN108895053A CN201811080796.0A CN201811080796A CN108895053A CN 108895053 A CN108895053 A CN 108895053A CN 201811080796 A CN201811080796 A CN 201811080796A CN 108895053 A CN108895053 A CN 108895053A
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- CN
- China
- Prior art keywords
- spring
- valve
- relief
- groove
- mandril
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/025—Pressure reducing valves
Abstract
The invention discloses a kind of plug-in No leakage pressure reducing valves, including swivel nut, valve pocket, relief valve seat, relief pressure valve cartridge, mandril is slidably connected in the swivel nut, and moves downward spring mechanism for controlling the mandril, and the valve pocket is mounted on the lower end of the swivel nut；The upper end of the valve pocket is equipped with the first slide opening, and the bottom end of first slide opening is equipped with intercommunicating pore；The relief valve seat is slidably connected in first slide opening；It is axially arranged with mounting hole to the lower end edge of the valve pocket, is equipped with perforation in the valve pocket；The circumference side of the relief valve seat is equipped with annular flow slot, and the circumference side of the valve pocket is equipped with the T hydraulic fluid port being connected to the annular flow slot, and the A hydraulic fluid port being connected to the intercommunicating pore；The relief pressure valve cartridge includes the valve rod being arranged in perforation, and the upper end of the valve rod is equipped with tapered end, lower end is equipped with and stretches hemispherical end；The first spring is equipped in sliding slot；The plug-in No leakage structure of relief pressure valve is simple, at low cost.
Description
Technical field
The present invention relates to hydraulic valve technology, specially a kind of plug-in No leakage pressure reducing valve.
Background technique
Pressure reducing valve is one of indispensable critical elements in hydraulic system, existing two-way pressure reducing valve and three-way pressure reducing valve
Substantially slide valve form is used, in the case that decompression branch road needs pressure maintaining or load to increase, working hole pressure increases, and causes
There are drainings to drain tap or pressure oil port for pressure-reduction outlet, prevent working oil path is from pressure maintaining, it is necessary to use accumulator or double
Carry out pressure maintaining to the solenoid valve of cut-off, causes system structure complicated, cost improves.
Summary of the invention
(1) technical problems to be solved
It is an object of the invention to overcome the defect in the prior art, the plug-in that a kind of structure is simple, at low cost is provided
No leakage pressure reducing valve.
(2) technical solution
To achieve the above object, the present invention provides the following technical solutions：A kind of plug-in No leakage pressure reducing valve, including spiral shell
Set, valve pocket, relief valve seat, relief pressure valve cartridge slidably connect mandril in the swivel nut, and transport downwards for controlling the mandril
Dynamic spring mechanism, the valve pocket is along the lower end for being axially mounted to the swivel nut of swivel nut；Its axial direction of the upper end edge of the valve pocket is set
There is the first slide opening, the bottom end of first slide opening is axially arranged with intercommunicating pore along valve pocket；The relief valve seat is slidably connected at institute
State the bottom end that the first slide opening is pressed in the first slide opening and under the action of mandril；The lower end edge of the valve pocket its be axially arranged with installation
Hole, the interior perforation being equipped with for being connected to mounting hole and intercommunicating pore of the valve pocket；The circumference side of the relief valve seat is equipped with ring
Shape is through-flow slot, the circumference side of the valve pocket are equipped with the T hydraulic fluid port being connected to the annular flow slot, and with the intercommunicating pore
The A hydraulic fluid port of connection；
The lower end edge of the relief valve seat its be equipped with the first groove, the upper end edge overflow valve of first groove axially upwards
Seat is axially arranged with the second groove, is equipped in the relief valve seat for being connected to the second groove and the first of annular flow slot through-flow
Hole；Positioning sleeve is installed in the mounting hole, one end axially downwardly setting along mounting hole of mounting hole is protruded on the positioning sleeve
There is a sliding slot, the lower end of the positioning sleeve is equipped with the second through flow hole being connected to the mounting hole, wherein in its circumference lateral position
The third through flow hole being connected to the sliding slot is equipped at heart position；The relief pressure valve cartridge includes the valve rod being arranged in perforation, institute
The upper end for stating valve rod, which is equipped with, to be protruded into the first groove for controlling the first groove and on-off tapered end, the lower end of the second groove are equipped with
It protrudes into sliding slot for controlling the hemispherical end of mounting hole and on-off of perforating；Upper end and the hemispherical end are equipped in the sliding slot
Contact the first spring for forcing the relief pressure valve cartridge to move upwards.
Through the above technical solutions, the opening of mounting hole and P hydraulic fluid port connect the plug-in No leakage pressure reducing valve when in use
Logical, oil liquid is entered by P hydraulic fluid port, when pressure of the A hydraulic fluid port pressure lower than spring mechanism setting, active force of the relief valve seat in mandril
Under move downward, drive the hemispherical end of relief pressure valve cartridge to move downward so that mounting hole with perforation be connected to, P hydraulic fluid port oil liquid passes through
The second through flow hole, mounting hole, perforation, intercommunicating pore on positioning sleeve enter A hydraulic fluid port, while pressure reducing valve under the action of the first spring
The tapered end of core is pressed on the opening of the second groove, to A hydraulic fluid port and T hydraulic fluid port be disconnected, when A hydraulic fluid port pressure rises to spring
When the pressure that mechanism is set up, A hydraulic fluid port pressure acts on the active force that the power generated on relief valve seat overcomes spring mechanism, pushes and overflows
Stream valve seat moves upwards, and relief pressure valve cartridge moves upwards under the action of the first spring and P hydraulic fluid port pressure, so that hemispherical end compresses
In the lower end of perforation, in this way, P hydraulic fluid port pressure will not flow into A hydraulic fluid port again, and because under the hemispherical end and perforation of relief pressure valve cartridge
End is linear sealing, the opening linear sealing of tapered end and the second groove, A hydraulic fluid port leak-free pressure；It is had been switched off in relief pressure valve cartridge
In the case of, if A hydraulic fluid port pressure because load variation, pressure rise be more than spring mechanism active force, at this moment relief valve seat after
Continuous move upwards opens the tapered end of relief pressure valve cartridge by the opening of the second groove, and the oil liquid of A hydraulic fluid port is through the first groove, second recessed
Slot, the first through flow hole, annular flow slot flow into T hydraulic fluid port, and such A hydraulic fluid port pressure can decline at once, then in the work of spring mechanism
It is pressed on the opening of the second groove again with the tapered end of lower relief pressure valve cartridge, maintains A hydraulic fluid port pressure；If A hydraulic fluid port pressure is low
After setting value, under the active force of spring mechanism, relief valve seat, which moves downward, wears the hemispherical end opening of relief pressure valve cartridge
The lower end in hole, P hydraulic fluid port pressure flow into A hydraulic fluid port again.The pressure after the decompression of A hydraulic fluid port can be set by spring mechanism.
In further technical solution, the spring mechanism includes second spring, screw plug, adjusting rod；The swivel nut it is upper
End is axially downwardly equipped with spring eye along it, and the upper end of the mandril is protruded into spring eye, and the screw plug is mounted on the upper of spring eye
At end opening；The second spring is arranged in spring eye and between screw plug and the upper end of mandril for forcing the mandril
It moves downward；Adjusting threaded hole is axially arranged with along it in the screw plug, and the adjusting rod is threaded in the adjusting threaded hole
The interior pretightning force for being used to adjust second spring.
In further technical solution, upper spring seat, institute are equipped between the upper end of the second spring and the adjusting rod
It states and is equipped with lower spring cup between the lower end of second spring and the upper end of the mandril.
(3) beneficial effect
Compared with prior art, technical solution of the present invention has the following advantages that：
It is designed for plug-in, it is volume compact, simple and reasonable, it is able to achieve No leakage decompression overflow effect.
Detailed description of the invention
Fig. 1 is structure chart of the invention；
Fig. 2 is the enlarged structure schematic diagram in Fig. 1 in dotted line frame.
Specific embodiment
It please refers to shown in Fig. 1-2, the present invention provides a kind of plug-in No leakage pressure reducing valve, including swivel nut 7, valve pocket 4, overflow
Valve seat 5, relief pressure valve cartridge 3 slidably connect mandril 6 in the swivel nut 7, and move downward spring for controlling the mandril 6
Mechanism, the valve pocket 4 is along the lower end for being axially mounted to the swivel nut 7 of swivel nut 7；The upper end edge of the valve pocket 4 its be axially arranged with
The bottom end of first slide opening 401, first slide opening 401 is axially arranged with intercommunicating pore 402 along valve pocket 4；The relief valve seat 5 slides
It is connected in first slide opening 401 and presses under the action of mandril 6 bottom end of first slide opening 401；The lower end of the valve pocket 4
Mounting hole 403 is axially arranged with along it, and the perforation 404 for being connected to mounting hole 403 and intercommunicating pore 402 is equipped in the valve pocket 4；Institute
The circumference side for stating relief valve seat 5 is equipped with annular flow slot 51, and the circumference side of the valve pocket 4 is equipped with logical with the annular
The T hydraulic fluid port 4a that chute 51 is connected to, and the A hydraulic fluid port 4b being connected to the intercommunicating pore 402.
The lower end edge of the relief valve seat 5 its be equipped with the first groove 54, the upper end edge of first groove 54 axially upwards
Relief valve seat 5 is axially arranged with the second groove 53, is equipped in the relief valve seat 5 for being connected to the second groove 53 and annular flow
First through flow hole 52 of slot 51；Positioning sleeve 1 is installed in the mounting hole 403, protrudes into mounting hole 403 on the positioning sleeve 1
One end is axially downwardly equipped with sliding slot 103 along mounting hole 403, and the lower end of the positioning sleeve 1 is equipped with and institute in its circumference lateral position
State that the second through flow hole 101 of the connection of mounting hole 403, to be equipped with the third being connected to the sliding slot 103 at position in its center through-flow
Hole 102；The relief pressure valve cartridge 3 includes the valve rod 301 being arranged in perforation 404 with gap, and the upper end of the valve rod 301, which is equipped with, stretches
Enter the on-off tapered end 302 for being used to control the first groove 54 and the second groove 53 in the first groove 54, lower end is equipped with and protrudes into sliding slot
For controlling the hemispherical end 303 of mounting hole 403 and 404 on-off of perforating in 103；Be equipped in the sliding slot 103 upper end with it is described
Hemispherical end 303 contacts the first spring 2a for forcing the relief pressure valve cartridge 3 to move upwards.
The spring mechanism includes second spring 2b, screw plug 9, adjusting rod 10；The upper end edge of the swivel nut 7 its axially downwardly
Equipped with spring eye 701, the upper end of the mandril 6 is protruded into spring eye 701, and the upper end that the screw plug 9 is mounted on spring eye 701 is opened
At mouthful；The second spring 2b is arranged in spring eye 701 and is used to force between screw plug 9 and the upper end of mandril 6 described
Mandril 6 moves downward；Adjusting threaded hole is axially arranged with along it in the screw plug 9, and the adjusting rod 10 is threaded in the tune
For adjusting the pretightning force of second spring 2b in section threaded hole.It is equipped between the upper end and the adjusting rod of the second spring 2b
Upper spring seat 8b is equipped with lower spring cup 8a between the lower end of the second spring 2b and the upper end of the mandril 6.
The opening of mounting hole 403 is connected to the plug-in No leakage pressure reducing valve with P hydraulic fluid port when in use, and oil liquid is by P hydraulic fluid port
Into when pressure of the A hydraulic fluid port 4b pressure lower than second spring 2b setting, relief valve seat 5 is transported downwards under the active force of mandril 6
It is dynamic, drive the hemispherical end 303 of relief pressure valve cartridge 3 to move downward, so that mounting hole 403 is connected to perforation 404, P hydraulic fluid port oil liquid is logical
The second through flow hole 101, mounting hole 403, perforation 404, the intercommunicating pore 402 crossed on positioning sleeve 1 enter A hydraulic fluid port 4b, while first
The tapered end 302 of relief pressure valve cartridge 3 is pressed on the opening of the second groove 53 under the action of spring 2a, thus by A hydraulic fluid port 4b and T oil
Mouth 4a is disconnected, and when A hydraulic fluid port 4b pressure rises to the pressure of second spring 2b setting, A hydraulic fluid port 4b pressure acts on relief valve seat 5
The power of upper generation overcomes the active force of second spring 2b, pushes relief valve seat 5 to move upwards, relief pressure valve cartridge 3 is in the first spring 2a
It is moved upwards under the action of P hydraulic fluid port pressure, so that the hemispherical end 303 of relief pressure valve cartridge 3 is pressed on the lower end of perforation 404, this
Sample P hydraulic fluid port pressure will not flow into A hydraulic fluid port 4b again, and because the hemispherical end 303 of relief pressure valve cartridge 3 and the lower end of perforation 404 are line
Sealing, the opening linear sealing of tapered end 302 and the second groove 53, A hydraulic fluid port 4b leak-free pressure；It is had been switched off in relief pressure valve cartridge 3
In the case where, if A hydraulic fluid port 4b pressure is because load variation, pressure rise is more than the active force of second spring 2b, at this moment overflow
Valve seat 5, which continues up, opens the tapered end of relief pressure valve cartridge 3 by the opening of the second groove 53, and the oil liquid of A hydraulic fluid port 4b is through the
One groove 54, the second groove 53, the first through flow hole 53, annular flow slot 51 flow into T hydraulic fluid port 4a, and such A hydraulic fluid port 4b pressure is at once
It can decline, then the tapered end of relief pressure valve cartridge 3 is pressed on the opening of the second groove 53 again under the action of second spring 2b
Place maintains A hydraulic fluid port 4b pressure；If A hydraulic fluid port 4b pressure is lower than after setting value, under the active force of second spring 2b, overflow valve
Seat 5 moves downward the lower end for making the hemispherical end 303 of relief pressure valve cartridge 3 open perforation 404, and P hydraulic fluid port pressure flows into A hydraulic fluid port 4b again.
The pressure after the decompression of A hydraulic fluid port 4b can be set by second spring 2b.
The above is only a preferred embodiment of the present invention, 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 (3)
1. a kind of plug-in No leakage pressure reducing valve, which is characterized in that described including swivel nut, valve pocket, relief valve seat, relief pressure valve cartridge
Mandril is slidably connected in swivel nut, and the spring mechanism moved downward for controlling the mandril, the valve pocket is along swivel nut
It is axially mounted to the lower end of the swivel nut；The upper end edge of the valve pocket its be axially arranged with the first slide opening, the bottom of first slide opening
End is axially arranged with intercommunicating pore along valve pocket；The relief valve seat is slidably connected in first slide opening and under the action of mandril
Press to the bottom end of the first slide opening；It is axially arranged with mounting hole to the lower end edge of the valve pocket, is equipped in the valve pocket for being connected to peace
Fill the perforation in hole and intercommunicating pore；The circumference side of the relief valve seat is equipped with annular flow slot, the circumference side of the valve pocket
It is equipped with the T hydraulic fluid port being connected to the annular flow slot, and the A hydraulic fluid port being connected to the intercommunicating pore；
It is equipped with the first groove to the lower end edge of the relief valve seat axially upwards, the upper end edge relief valve seat of first groove
It is axially arranged with the second groove, the first through flow hole for being connected to the second groove and annular flow slot is equipped in the relief valve seat；
Positioning sleeve is installed, one end that mounting hole is protruded on the positioning sleeve is slided along being axially downwardly equipped with for mounting hole in the mounting hole
The lower end of slot, the positioning sleeve is equipped with the second through flow hole being connected to the mounting hole, in its center position in its circumference lateral position
It sets place and is equipped with the third through flow hole being connected to the sliding slot；The relief pressure valve cartridge includes the valve rod being arranged in perforation, the valve
The upper end of bar is equipped with and protrudes into the first groove the on-off tapered end for being used to control the first groove and the second groove, lower end is equipped with and protrudes into
For controlling the hemispherical end of mounting hole and on-off of perforating in sliding slot；Upper end is equipped in the sliding slot to contact with the hemispherical end
The first spring for forcing the relief pressure valve cartridge to move upwards.
2. plug-in No leakage pressure reducing valve according to claim 1, which is characterized in that the spring mechanism includes the second bullet
Spring, screw plug, adjusting rod；It is axially downwardly equipped with spring eye to the upper end edge of the swivel nut, and spring eye is protruded into the upper end of the mandril
Interior, the screw plug is mounted at the upper end opening of spring eye；The second spring is arranged in spring eye and is located at screw plug and top
For forcing the mandril to move downward between the upper end of bar；Adjusting threaded hole, the tune are axially arranged with along it in the screw plug
Pole is threaded in the adjusting threaded hole for adjusting the pretightning force of second spring.
3. plug-in No leakage pressure reducing valve according to claim 2, which is characterized in that the upper end of the second spring with it is described
It is equipped with upper spring seat between adjusting rod, lower spring cup is equipped between the lower end of the second spring and the upper end of the mandril.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080796.0A CN108895053A (en) | 2018-09-17 | 2018-09-17 | A kind of plug-in No leakage pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080796.0A CN108895053A (en) | 2018-09-17 | 2018-09-17 | A kind of plug-in No leakage pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108895053A true CN108895053A (en) | 2018-11-27 |
Family
ID=64359906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811080796.0A Withdrawn CN108895053A (en) | 2018-09-17 | 2018-09-17 | A kind of plug-in No leakage pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108895053A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217497A (en) * | 2021-05-24 | 2021-08-06 | 西安航天远征流体控制股份有限公司 | Plug-in type energy storage overflow valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202812354U (en) * | 2012-09-24 | 2013-03-20 | 温州美瑞克液压有限公司 | Thread plug-in type pressure-reducing valve |
| CN103644342A (en) * | 2013-11-25 | 2014-03-19 | 大连元利流体技术有限公司 | Pneumatic-control pollution-resistant zero-leakage cartridge pressure reducing valve |
| CN203584781U (en) * | 2013-12-16 | 2014-05-07 | 宁波赛维思机械有限公司 | Cartridge pilot relief valve with one-way valve |
| CN204284055U (en) * | 2014-11-19 | 2015-04-22 | 上海立新液压有限公司 | Plug-in type three-way type proportional pressure-reducing valve |
| US20180039291A1 (en) * | 2015-06-11 | 2018-02-08 | Hydac Fluidtechnik Gmbh | Pressure-regulating valve |
-
2018
- 2018-09-17 CN CN201811080796.0A patent/CN108895053A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202812354U (en) * | 2012-09-24 | 2013-03-20 | 温州美瑞克液压有限公司 | Thread plug-in type pressure-reducing valve |
| CN103644342A (en) * | 2013-11-25 | 2014-03-19 | 大连元利流体技术有限公司 | Pneumatic-control pollution-resistant zero-leakage cartridge pressure reducing valve |
| CN203584781U (en) * | 2013-12-16 | 2014-05-07 | 宁波赛维思机械有限公司 | Cartridge pilot relief valve with one-way valve |
| CN204284055U (en) * | 2014-11-19 | 2015-04-22 | 上海立新液压有限公司 | Plug-in type three-way type proportional pressure-reducing valve |
| US20180039291A1 (en) * | 2015-06-11 | 2018-02-08 | Hydac Fluidtechnik Gmbh | Pressure-regulating valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217497A (en) * | 2021-05-24 | 2021-08-06 | 西安航天远征流体控制股份有限公司 | Plug-in type energy storage overflow valve |
| CN113217497B (en) * | 2021-05-24 | 2023-11-21 | 西安航天远征流体控制股份有限公司 | Plug-in type energy storage overflow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181127 |
|
| WW01 | Invention patent application withdrawn after publication |