CN208595108U - A kind of pilot operated compound relief valve structure - Google Patents
A kind of pilot operated compound relief valve structure Download PDFInfo
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- CN208595108U CN208595108U CN201821297763.7U CN201821297763U CN208595108U CN 208595108 U CN208595108 U CN 208595108U CN 201821297763 U CN201821297763 U CN 201821297763U CN 208595108 U CN208595108 U CN 208595108U
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Abstract
The utility model announces a kind of pilot operated compound relief valve structure, belongs to hydraulic valve technology.Main valve plug and main spool spring are installed in main valve housing, oil leak hole a is provided on main valve housing；Pilot valve and pressure spring are installed in guide valve blocks, oil leak hole b is provided on guide valve blocks；Main valve plug axle center is provided with damping hole I；Main valve housing is built in multi-way valve body；Pilot valve installed in front has guide's valve seat, and guide's valve seat axle center is provided with damping hole II；Pilot valve front end is the bullet cooperated with guide's valve seat, and the front end of bullet is arc-shaped surface.Pilot valve selects conical surface seal in the utility model, and conical surface tip design is arc structure, increases effective active area, eliminates vibration and the noise of overflow valve；Main valve is built in multi-way valve body, reduces volume, reduces pressure oscillation, guarantees that operating mechanism is not interfered；Compact overall structure is reasonable, and processing effect is high, at low cost, and installation is easy to operate, and through-current capability is strong.
Description
Technical field
The utility model relates to hydraulic valve technology, specifically a kind of pilot operated compound relief valve structure.
Background technique
Pilot operated compound relief valve mostly uses cone valve type structure, theoretically, poppet valve core and valve seat type linear sealing and centering, along valve seat
The flow velocity of mouthful circumference everywhere be it is identical, transient force radially even circumferential distribution will not influence the job stability of spool,
But during actual processing, valve seat and the spool conical surface there are circularity form error, the end face of spring and axis out of plumb, part
The factors such as guiding deviation can all influence the stability of spool work, to generate vibration, noise.
Summary of the invention
In order to solve the above technical problems, the utility model provides a kind of pilot operated compound relief valve structure.
The utility model is achieved through the following technical solutions: a kind of pilot operated compound relief valve structure, including main valve housing, pilot valve
Body is provided with the spool mounting hole being connected in main valve housing, guide valve blocks；Main valve is installed in the spool mounting hole of the main valve housing
Core and main spool spring are provided with the oil leak hole a controlled by main valve plug on main valve housing；It is installed in the spool mounting hole of the guide valve blocks
There are pilot valve and pressure spring, the oil leak hole b controlled by pilot valve is provided on guide valve blocks；The main valve plug axle center is provided with
Damping hole I；The main valve housing is built in multi-way valve body；The pilot valve installed in front has guide's valve seat, guide's valve seat
Axle center is provided with damping hole II；The pilot valve front end is the bullet cooperated with guide's valve seat, and the front end of bullet is circular arc
Shape face.
It is further: the lower end of the spool mounting hole of the guide valve blocks is equipped with connector；In the connector internal channel
Check valve is installed.
Check valve in the connector internal channel connects system unloaded solenoid valve.
The upper end of the spool mounting hole of the guide valve blocks, which is connected through a screw thread, is equipped with guide's valve pocket, guide's valve pocket axle center
It is provided with mounting hole；Be set with adjusting screw in the mounting hole of guide's valve pocket, adjust screw be connected through a screw thread and
Guide's valve pocket is fixed, and is adjusted screw inner end and is connect with pressure spring, is adjusted screw outer end and is stretched out guide's valve pocket；In the adjusting spiral shell
Nail outer end is equipped with locking blind nut, adjusts screw outer end face and is provided with interior hexagonal counterbore.
The main valve housing is in cylinder barrel shaped, and main valve housing is sleeved in the mounting hole in multi-way valve body, main valve housing periphery
It is upper to be provided with sealing device between multi-way valve body mounting hole；The oil leak hole a, oil leak hole b are connected to multi-way valve body
In hydraulic fluid port T.
The main valve housing outer end is set between main valve housing outer end and guide valve blocks deep gouge in the deep gouge of guide valve blocks side
It is equipped with sealing device.
Compared with prior art, the utility model has the beneficial effects that pilot valve selects conical surface seal, conical surface tip is set
It is calculated as arc structure, increases effective active area, eliminates vibration and the noise of overflow valve；Main valve is built in multi-way valve body, subtracts
Small size reduces pressure oscillation, guarantees that operating mechanism is not interfered；Compact overall structure is reasonable, and processing effect is high, at low cost,
Install easy to operate, through-current capability is strong.
Detailed description of the invention
Fig. 1 is the utility model structure diagram；
In figure: main valve housing 1, main valve plug 2, main spool spring 3, guide valve blocks 4, guide's valve seat 5, pilot valve 6, pressure spring
7, screw 8 is adjusted, guide's valve pocket 9 locks blind nut 10, connector 11, damping hole I 12, damping hole II 13.
Specific embodiment
It is a specific embodiment of the utility model below, the utility model is described further now in conjunction with attached drawing.
As shown in Figure 1, a kind of pilot operated compound relief valve structure, including main valve housing 1, guide valve blocks 4, main valve housing 1, guide valve blocks
The spool mounting hole being connected is provided in 4.Main valve housing 1 is in cylinder barrel shaped, and main valve housing 1 is sleeved on the mounting hole in multi-way valve body
In, sealing device is provided between multi-way valve body mounting hole on 1 periphery of main valve housing.1 outer end of main valve housing is embedded in pilot valve
In the deep gouge of 4 side of body, sealing device is provided between 4 deep gouge of 1 outer end of main valve housing and guide valve blocks.
Main valve plug 2 and main spool spring 3 are installed in the spool mounting hole of main valve housing 1, are provided on main valve housing 1 by main valve plug 2
The oil leak hole a of control, oil leak hole a are connected to the hydraulic fluid port T in multi-way valve body.Main valve plug 2 is cylindrical drum closed at one end, main
2 axle center of spool is provided with damping hole I 12.
Pilot valve 6 and pressure spring 7 are installed, 6 installed in front of pilot valve has in the spool mounting hole of guide valve blocks 4
Guide's valve seat 5,5 axle center of guide's valve seat are provided with damping hole II 13；6 front end of pilot valve is the bullet cooperated with guide's valve seat 5,
The front end and bullet root and 6 front end junction of pilot valve of bullet are arc-shaped surfaces.Be provided on guide valve blocks 4 by
The oil leak hole b that pilot valve 6 controls, oil leak hole b are connected to the hydraulic fluid port T in multi-way valve body.
The lower end of the spool mounting hole of guide valve blocks 4 is equipped with connector 11；Check valve is installed in 11 internal channel of connector.It connects
Check valve in first 11 internal channel connects system unloaded solenoid valve.
The upper end of the spool mounting hole of guide valve blocks 4, which is connected through a screw thread, is equipped with guide's valve pocket 9,9 axle center of guide's valve pocket
It is provided with mounting hole；It adjusts screw 8 and is connected through a screw thread, adjusting screw 8 inner end and pressure spring 7 fixed with guide's valve pocket 9
Connection adjusts 8 outer end of screw and stretches out guide's valve pocket 9；Locking blind nut 10 is installed adjusting 8 outer end of screw, adjusts 8 outer end of screw
Face is provided with interior hexagonal counterbore.
The course of work:
Main valve housing 1, main valve plug 2, main spool spring 3 constitute main valve；Guide's valve seat 5, pressure spring 7, is adjusted pilot valve 6
Screw 8, guide's valve seat 9, locking blind nut 10 are integrated in guide valve blocks 4, constitute pilot valve；Pressure oil acts directly on main valve plug
Outside 2 cavity of resorption active area A, by the damping hole I 12 on main valve plug 2, the damping hole II 13 on guide's valve seat 5, until pilot valve
The front end of core 6；
Input pressure P increases, and the hydraulic coupling acted in pilot valve 6 also increases with it, when hydraulic coupling is greater than pressure regulation bullet
The spring force of spring 7, pilot valve valve port are opened, and hydraulic oil passes through the damping hole I 12 on main valve plug 2, the damping hole on guide's valve seat 9
II 13, the oil leak hole b oil return inlet T of pilot valve valve port, guide valve blocks 4；
When liquid stream passes through damping hole I 12, pressure difference is generated at both ends, cavity pressure before pilot valve is made to be lower than main valve input pressure,
When the hydraulic power that pressure difference is formed overcomes the spring force of main spool spring 3, oil leak hole a oil return opening of the input pressure oil through main valve housing 1
T；
Have check valve inside connector 11, connect system unloaded solenoid valve, when solenoid valve obtains it is electric after, hydraulic oil passes through connector 11
Oil return box.
This pilot operated compound relief valve structure is made of main valve and pilot valve two parts, and main valve uses two section concentric structures, built-in
In in valve body, pilot valve is cone valve seat design, is arc structure by the big spring of selection rigidity and by cone valve tip design,
Slow down the frequency and amplitude of disc vibration, eliminate spool axial direction and radial motion, is easily vibrated with this eliminating overflow valve and noise
Big disadvantage.
Claims (6)
1. a kind of pilot operated compound relief valve structure, including main valve housing (1), guide valve blocks (4), in main valve housing (1), guide valve blocks (4)
It is provided with the spool mounting hole being connected；Main valve plug (2) and main spool spring are installed in the spool mounting hole of the main valve housing (1)
(3), the oil leak hole a controlled by main valve plug (2) is provided on main valve housing (1)；It is installed in the spool mounting hole of the guide valve blocks (4)
There are pilot valve (6) and pressure spring (7), the oil leak hole b controlled by pilot valve (6) is provided on guide valve blocks (4)；
It is characterized by:
Main valve plug (2) axle center is provided with damping hole I (12)；The main valve housing (1) is built in multi-way valve body；
Pilot valve (6) installed in front has guide's valve seat (5), and guide's valve seat (5) axle center is provided with damping hole II (13)；It is described
Pilot valve (6) front end is the bullet cooperated with guide's valve seat (5), and the front end of bullet is arc-shaped surface.
2. a kind of pilot operated compound relief valve structure according to claim 1, it is characterised in that: the valve of the guide valve blocks (4)
The lower end of core mounting hole is equipped with connector (11)；Check valve is installed in connector (11) internal channel.
3. a kind of pilot operated compound relief valve structure according to claim 2, it is characterised in that: in connector (11) internal channel
Check valve connect system unloaded solenoid valve.
4. a kind of pilot operated compound relief valve structure according to claim 1, it is characterised in that: the valve of the guide valve blocks (4)
The upper end of core mounting hole, which is connected through a screw thread, to be equipped with guide's valve pocket (9), and guide's valve pocket (9) axle center is provided with mounting hole；Described
It is set in the mounting hole of guide's valve pocket (9) and adjusts screw (8), adjusted screw (8) and be connected through a screw thread and guide's valve pocket
(9) fixed, it adjusts screw (8) inner end and is connect with pressure spring (7), adjust screw (8) outer end and stretch out guide's valve pocket (9)；Institute
It states adjusting screw (8) outer end and locking blind nut (10) is installed, adjust screw (8) outer end face and be provided with interior hexagonal counterbore.
5. a kind of pilot operated compound relief valve structure according to claim 1, it is characterised in that: the main valve housing (1) is in cylinder
Tubular, main valve housing (1) are sleeved in the mounting hole in multi-way valve body, are installed on main valve housing (1) periphery with multi-way valve body
Sealing device is provided between hole；The oil leak hole a, oil leak hole b are connected to the hydraulic fluid port T in multi-way valve body.
6. a kind of pilot operated compound relief valve structure according to claim 5, it is characterised in that: main valve housing (1) outer end is embedding
In the deep gouge of guide valve blocks (4) side, sealing device is provided between main valve housing (1) outer end and guide valve blocks (4) deep gouge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821297763.7U CN208595108U (en) | 2018-08-13 | 2018-08-13 | A kind of pilot operated compound relief valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821297763.7U CN208595108U (en) | 2018-08-13 | 2018-08-13 | A kind of pilot operated compound relief valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208595108U true CN208595108U (en) | 2019-03-12 |
Family
ID=65604739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821297763.7U Active CN208595108U (en) | 2018-08-13 | 2018-08-13 | A kind of pilot operated compound relief valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208595108U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425190A (en) * | 2019-08-08 | 2019-11-08 | 广州龙渊液压机械有限公司 | A kind of big-flow high-pressure overflow valve |
| CN111059330A (en) * | 2019-12-31 | 2020-04-24 | 江苏高中压阀门有限公司 | Hydraulic pressure control overflow valve |
| CN112682378A (en) * | 2020-12-23 | 2021-04-20 | 南岳电控（衡阳）工业技术股份有限公司 | But pressure boost screw thread cartridge formula guide overflow valve |
-
2018
- 2018-08-13 CN CN201821297763.7U patent/CN208595108U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425190A (en) * | 2019-08-08 | 2019-11-08 | 广州龙渊液压机械有限公司 | A kind of big-flow high-pressure overflow valve |
| CN111059330A (en) * | 2019-12-31 | 2020-04-24 | 江苏高中压阀门有限公司 | Hydraulic pressure control overflow valve |
| CN112682378A (en) * | 2020-12-23 | 2021-04-20 | 南岳电控（衡阳）工业技术股份有限公司 | But pressure boost screw thread cartridge formula guide overflow valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210508 Address after: 221004 No.18 Taoshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Amakai Hydraulic Technology Co.,Ltd. Address before: 221004 No.18, Taoshan Road, Jinshanqiao Development Zone, Xuzhou City, Jiangsu Province Patentee before: XCMG XUZHOU XUGONG HYDRAULIC PARTS Co.,Ltd. |