CN203321916U - Hydraulic pilot control valve - Google Patents
Hydraulic pilot control valve Download PDFInfo
- Publication number
- CN203321916U CN203321916U CN2013201351805U CN201320135180U CN203321916U CN 203321916 U CN203321916 U CN 203321916U CN 2013201351805 U CN2013201351805 U CN 2013201351805U CN 201320135180 U CN201320135180 U CN 201320135180U CN 203321916 U CN203321916 U CN 203321916U
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- CN
- China
- Prior art keywords
- valve body
- plunger
- valve
- spring
- seat
- 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.)
- Expired - Fee Related
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- Mechanically-Actuated Valves (AREA)
- Servomotors (AREA)
Abstract
A hydraulic pilot control valve comprises an upper valve body, a lower valve body, a dirt-proof boot, a handle component and hexagon socket head cap screws, wherein the upper valve body and the lower valve body are connected together through the hexagon socket head cap screws; an oil inlet P, an oil return opening T, a working port a and a working port b are formed in the lower valve body; a plunger in the lower valve body can slide in a plunger sleeve; a spring seat, a valve element, a pressure spring and a reset spring are mounted below the plunger; when the plunger slides, the valve element can move in a valve seat. The hydraulic pilot control valve, disclosed by the utility model, is a double-linkage pilot valve with one handle and has the characteristics of gradual change of the output pressure, sensitive control and accuracy without backlash; the softer pressure spring is selected, so that the acting force for operation is reduced; the rust-proof plunger is used to improve the reliability of a product.
Description
Technical field:
The utility model relates to a kind of hydrovalve, particularly a kind of Hydraulic guide control valve moved for controlling the multi-way valve spool.
Background technique:
The Hydraulic guide control valve is the element moved for controlling the multi-way valve spool, for valve core of main valve can accurately be moved in stroke, scope according to valve core of main valve mobile required pressure in stroke, set suitable stroke and Compress Spring rigidity to pilot-actuated valve, make the pilot-actuated valve delivery pressure can in required pressure range, have good control characteristic, thereby realize the accurate control to valve core of main valve, by changing lever operated angle, just can facilitate sensitive this function that realizes.
The model utility content:
The purpose of this utility model is for the deficiencies in the prior art part, and a kind of Hydraulic guide control valve accurately moved for controlling valve core of main valve is provided.
Technology solution of the present utility model is as follows:
A kind of Hydraulic guide control valve, comprise upper valve body, lower valve body, dirt-proof boot, Handleset and hexagon socket cap head screw; Described upper valve body and lower valve body link together by hexagon socket cap head screw, described Handleset is comprised of handle set and Joystick, described Handleset is connected by latch with upper valve body, is connected with interior hexagonal pointless screw on Handleset, and adopts nut to fix.
As preferably, described lower valve body is provided with oil inlet P, oil return inlet T and actuator port a, actuator port b, be provided with two valve openings in described lower valve body, described valve opening top is equipped with plunger bushing, the plunger that can be free to slide is arranged in plunger bushing, the C1 seal ring is installed between described plunger and plunger bushing, described plunger is provided with the "O"-ring groove, lay first "O"-ring in described "O"-ring groove, under described plunger, spring seat is installed, a Returnning spring is installed under described spring seat, also be connected with valve seat in described valve opening, also leave to lay the "O"-ring groove of the second "O"-ring on described valve seat, described Returnning spring one end is pressed on spring seat, the other end is pressed on valve seat, in described spring seat, spool is installed, described spool is positioned at the through hole in the middle of valve seat, compress a Compress Spring between described spool and spring seat.
As preferably, be provided with elastic cylindrical pin between described handle set and Joystick, and described handle set and Joystick are combined through elastic cylindrical pin.
The utility model beneficial effect is:
This hydraulic pilot valve has the gradual variation of delivery pressure, controls sensitively, and accurate zero-lash characteristic, selected softer Returnning spring, reduced and operated required active force, and used antirust plunger, promoted the reliability of product.
The accompanying drawing explanation:
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is control valve hydraulic schematic diagram of the present utility model;
Fig. 2 is structural representation of the present utility model.
Embodiment:
Embodiment, be shown in accompanying drawing 1,2, and a kind of Hydraulic guide control valve comprises upper valve body 3, lower valve body 1, dirt-proof boot 4, Handleset and hexagon socket cap head screw 2; Described upper valve body 3 and lower valve body 1 link together by hexagon socket cap head screw 2, described Handleset is comprised of handle set 7 and Joystick 5, described Handleset is connected by latch with upper valve body 3, is connected with interior hexagonal pointless screw 8 on Handleset, and adopts nut 9 fixing.
Wherein, described lower valve body 1 is provided with oil inlet P, oil return inlet T and actuator port a, actuator port b, be provided with two valve openings in described lower valve body 1, described valve opening top is equipped with plunger bushing 11, the plunger 10 that can be free to slide is arranged in plunger bushing 11, 11 of described plunger 10 and plunger bushings are equipped with C1 seal ring 12, described plunger 10 is provided with the "O"-ring groove, lay first "O"-ring 13 in described "O"-ring groove, described plunger is equipped with spring seat 10 times, a Returnning spring 14 is installed under described spring seat, also be connected with valve seat 16 in described valve opening, also leave to lay the "O"-ring groove of the second "O"-ring 17 on described valve seat 16, described Returnning spring 14 1 ends are pressed on spring seat, the other end is pressed on valve seat 16, spool 15 is installed in described spring seat, described spool 15 is positioned at the through hole in the middle of valve seat 16, compress a Compress Spring between described spool 15 and spring seat, be provided with elastic cylindrical pin 6 between described handle set 7 and Joystick 5, and described handle set 7 and Joystick 5 are combined through elastic cylindrical pin 6.
Working principle: when operating grip swings several angle, plunger is depressed corresponding displacement by handle, compresses Compress Spring between spool and spring seat and the Returnning spring under spring seat simultaneously, and now spool is compressed spring force and moves down.Radial hole on spool is when P mouth on lower valve body communicates, fluid can flow to corresponding working hole, and now working hole is by build-up pressure, and this pressure can produce feedback to spool, when feedback force is less than spring force, spool can continue to move down, and valve port increases, the working hole pressure rise, when feedback force is greater than spring force, spool is upwards pushed up back, and valve port reduces, the working hole pressure drop.Therefore, working hole pressure and the plunger stroke of pilot valve are proportional, also proportional with lever operated angle.
When release handle, handle returns to initial position under the effect of Returnning spring.
Claims (3)
1. a Hydraulic guide control valve, comprise upper valve body (3), lower valve body (1), dirt-proof boot (4), Handleset and hexagon socket cap head screw (2); It is characterized in that: the lower valve body (1) of described upper valve body (3) links together by hexagon socket cap head screw (2), described Handleset is comprised of handle set (7) and Joystick (5), described Handleset is connected by latch with upper valve body (3), be connected with interior hexagonal pointless screw (8) on Handleset, and adopt nut (9) fixing.
2. a kind of Hydraulic guide control valve according to claim 1, it is characterized in that: described lower valve body is provided with oil inlet P, oil return inlet T and actuator port a, actuator port b, be provided with two valve openings in described lower valve body, described valve opening top is equipped with plunger bushing (11), the plunger (10) that can be free to slide is arranged in plunger bushing (11), between described plunger (10) and plunger bushing (11), C1 seal ring (12) is installed, described plunger (10) is provided with the "O"-ring groove, lay first "O"-ring (13) in described "O"-ring groove, described plunger is equipped with spring seat under (10), a Returnning spring (14) is installed under described spring seat, also be connected with valve seat (16) in described valve opening, also leave to lay the "O"-ring groove of the second "O"-ring (17) on described valve seat (16), described Returnning spring (14) one ends are pressed on spring seat, the other end is pressed on valve seat (16), spool (15) is installed in described spring seat, described spool (15) is positioned at the through hole in the middle of valve seat (16), compress a Compress Spring between described spool (15) and spring seat.
3. a kind of Hydraulic guide control valve according to claim 1, it is characterized in that: be provided with elastic cylindrical pin (6) between described handle set (7) and Joystick (5), and described handle set (7) and Joystick (5) are combined through elastic cylindrical pin (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201351805U CN203321916U (en) | 2013-03-25 | 2013-03-25 | Hydraulic pilot control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201351805U CN203321916U (en) | 2013-03-25 | 2013-03-25 | Hydraulic pilot control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203321916U true CN203321916U (en) | 2013-12-04 |
Family
ID=49661271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201351805U Expired - Fee Related CN203321916U (en) | 2013-03-25 | 2013-03-25 | Hydraulic pilot control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203321916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405714A (en) * | 2014-12-01 | 2015-03-11 | 上海立新液压有限公司 | Pilot control valve |
-
2013
- 2013-03-25 CN CN2013201351805U patent/CN203321916U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405714A (en) * | 2014-12-01 | 2015-03-11 | 上海立新液压有限公司 | Pilot control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20170325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |