CN202833379U - Overlying type overflow valve - Google Patents
Overlying type overflow valve Download PDFInfo
- Publication number
- CN202833379U CN202833379U CN 201220412649 CN201220412649U CN202833379U CN 202833379 U CN202833379 U CN 202833379U CN 201220412649 CN201220412649 CN 201220412649 CN 201220412649 U CN201220412649 U CN 201220412649U CN 202833379 U CN202833379 U CN 202833379U
- Authority
- CN
- China
- Prior art keywords
- valve
- screw rod
- pressure
- adjusting screw
- valve 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
Links
Images
Abstract
The utility model relates to the technical field of hydraulic components, in particular to an overlying type overflow valve. The overlying type overflow valve comprises a valve seat, a pressure adjusting spring, a valve sleeve and an adjusting screw rod. A cavity is formed inside the valve seat and is communicated with an oil inlet of the valve seat, and the valve sleeve is connected on the valve seat in an inserted mode. The adjusting screw rod is connected with the valve sleeve in a screw joint manner and is abutted on the pressure adjusting spring. A circular groove is formed inside the cavity and is communicated with an oil outlet. A valve core which can be connected in a sliding mode is placed inside the cavity. The valve core is provided with a hydraulic pressure groove and is abutted on the pressure adjusting spring. The overlying type overflow valve is safe, reliable and stable in overflowing pressure, and the phenomenon of leakage dose not happen.
Description
Technical field
The utility model relates to technical field of hydraulic elements, relates in particular to a kind of Superimposed relief valve.
Background technique
Overlapping Hydraulic Relief Valve of the prior art is divided into direct-acting type and leading type from structural principle, and direct-acting type is comprised of valve body, taper or spherical valve core and pressure adjusting spring, and its pressure controling precision is low, usually uses as pilot valve; Another kind is by pilot valve and two-stage or three grades of pilot operated compound relief valves that concentric main valve forms, and this valve allows pressure is regulated minutely, and pressure controling precision is higher.But because the spool of pilot valve is taper or spherical, no matter be direct-acting type or leading type, generally all have certain leakage rate, and working pressure is also stable not.
Summary of the invention
The purpose of this utility model is to provide a kind of Superimposed relief valve for the deficiencies in the prior art, and is safe and reliable, and without leaking, oil pressure relief is stable.
For achieving the above object, a kind of Superimposed relief valve of the present utility model, comprise valve seat, pressure adjusting spring, valve pocket and adjusting screw rod, described valve seat inside is provided with cavity, described cavity is communicated with the oiler of valve seat, described valve pocket is plugged in described valve seat, described adjusting screw rod is bolted in described valve pocket, described adjusting screw rod is connected to described pressure adjusting spring, described cavity is provided with annular groove, and described annular groove is communicated in the oil outlet of described valve seat, and described cavity inside is provided with the spool that slidably connects, described spool is provided with the hydraulic pressure groove, and described spool is connected to described pressure adjusting spring.
As preferably, described valve pocket is provided with internal thread, and described adjusting screw rod is provided with the outside thread with described screw-internal thread fit, and described adjusting screw rod is bolted in described valve pocket.
As preferably, be provided with spring seat between described adjusting screw rod and the described pressure adjusting spring.
As preferably, described adjusting screw rod is connected with knob.
As preferably, described knob is bolted in described adjusting screw rod by screw.
The beneficial effects of the utility model: a kind of Superimposed relief valve, comprise valve seat, pressure adjusting spring, valve pocket and adjusting screw rod, described valve seat inside is provided with cavity, described cavity is communicated with the oiler of valve seat, described valve pocket is plugged in described valve seat, described adjusting screw rod is bolted in described valve pocket, described adjusting screw rod is connected to described pressure adjusting spring, described cavity is provided with annular groove, described annular groove is communicated in described oil outlet, described cavity inside is provided with the spool that slidably connects, and described spool is provided with the hydraulic pressure groove, and described spool is connected to described pressure adjusting spring; This Superimposed relief valve is safe and reliable, and without leaking, oil pressure relief is stable.
Description of drawings
Fig. 1 is cut-away illustration of the present utility model.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is exploded perspective view of the present utility model.
Reference character comprises:
1-valve seat, 11-cavity
12-oiler, 13-oil outlet
14-annular groove, 2-pressure adjusting spring
3-valve pocket, 4-adjusting screw rod
5-spool, 51-hydraulic pressure groove
6-spring seat, 7-knob.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
As shown in Figure 1 to Figure 3, Superimposed relief valve of the present utility model, comprise valve seat 1, pressure adjusting spring 2, valve pocket 3 and adjusting screw rod 4, described valve seat 1 inside is provided with cavity 11, described cavity 11 is communicated with the oiler 12 of valve seat 1, described valve pocket 3 is plugged in described valve seat 1, described adjusting screw rod 4 is bolted in described valve pocket 3, described adjusting screw rod 4 is connected to described pressure adjusting spring 2, described cavity 11 is provided with annular groove 14, and described annular groove 14 is communicated in the oil outlet 13 of described valve seat 1, and described cavity 11 inside are provided with the spool 5 that slidably connects, described spool 5 is provided with hydraulic pressure groove 51, and described spool 5 is connected to described pressure adjusting spring 2.
Superimposed relief valve of the present utility model, the oiler 12 of valve seat 1 and A road logical (also can make with the B road logical), the oil outlet 13 of valve seat 1 is logical with the T road.A road pressure is through the oiler 12 of valve seat 1.When A road pressure is lower than the set pressure of pressure adjusting spring 2, namely do not arrive safe oil pressure relief, pressure adjusting spring 2 is pressed on spool 5 on the valve seat 1.When A road pressure is higher than the set pressure of pressure adjusting spring 2, because when spool 5 presses valve seat 1, hydraulic pressure groove 51 just is communicated in oiler 12, so hydraulic oil is introduced into the hydraulic pressure groove 51 of spool 5, spool 5 begins to compress pressure adjusting spring 2 under the thrust of oil pressure, when the front end of spool 5 is lifted off a seat 1 the time, this moment, hydraulic oil entered in the cavity 11 fully, promote spool 5 compression pressure adjusting springs 2, when the front end of spool 5 is pushed into connection oil outlet 13, hydraulic oil can flow out from oil outlet 13, finishes the action of overflow.
When A road pressure was lower than the set pressure of pressure adjusting spring 2, spool 5 pressed on valve seat 1 resetting under the effect of pressure adjusting spring 2, and A road hydraulic oil is blocked.
Described valve pocket 3 is provided with internal thread, and described adjusting screw rod 4 is provided with the outside thread with described screw-internal thread fit, and described adjusting screw rod 4 is bolted in described valve pocket 3.
Be provided with spring seat 6 between described adjusting screw rod 4 and the described pressure adjusting spring 2, spring seat 6 makes adjusting screw rod 4 and pressure adjusting spring 2 butts more firm.
Described adjusting screw rod 4 is connected with knob 7, and described knob 7 is bolted in described adjusting screw rod 4 by screw, and described knob 7 is user-friendly for the setting of relief valve pressure.
Superimposed relief valve of the present utility model is safe and reliable, and without leaking, oil pressure relief is stable.
Above content only is preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (5)
1. Superimposed relief valve, comprise valve seat, pressure adjusting spring, valve pocket and adjusting screw rod, described valve seat inside is provided with cavity, described cavity is communicated with the oiler of valve seat, described valve pocket is plugged in described valve seat, described adjusting screw rod is bolted in described valve pocket, described adjusting screw rod is connected to described pressure adjusting spring, it is characterized in that: described cavity is provided with annular groove, described annular groove is communicated in the oil outlet of described valve seat, described cavity inside is provided with the spool that slidably connects, and described spool is provided with the hydraulic pressure groove, and described spool is connected to described pressure adjusting spring.
2. Superimposed relief valve according to claim 1, it is characterized in that: described valve pocket is provided with internal thread, and described adjusting screw rod is provided with the outside thread with described screw-internal thread fit, and described adjusting screw rod is bolted in described valve pocket.
3. Superimposed relief valve according to claim 1 is characterized in that: be provided with spring seat between described adjusting screw rod and the described pressure adjusting spring.
4. Superimposed relief valve according to claim 1, it is characterized in that: described adjusting screw rod is connected with knob.
5. Superimposed relief valve according to claim 4, it is characterized in that: described knob is bolted in described adjusting screw rod by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220412649 CN202833379U (en) | 2012-08-20 | 2012-08-20 | Overlying type overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220412649 CN202833379U (en) | 2012-08-20 | 2012-08-20 | Overlying type overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833379U true CN202833379U (en) | 2013-03-27 |
Family
ID=47945094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220412649 Expired - Fee Related CN202833379U (en) | 2012-08-20 | 2012-08-20 | Overlying type overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704286A (en) * | 2017-02-28 | 2017-05-24 | 中冶华天南京工程技术有限公司 | Two-stage pressure switching overflow valve |
-
2012
- 2012-08-20 CN CN 201220412649 patent/CN202833379U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704286A (en) * | 2017-02-28 | 2017-05-24 | 中冶华天南京工程技术有限公司 | Two-stage pressure switching overflow valve |
| CN106704286B (en) * | 2017-02-28 | 2018-05-18 | 中冶华天南京工程技术有限公司 | The overflow valve of two stage pressures switching |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204345010U (en) | Guide's overflow-type reduction valve | |
| CN201982396U (en) | Super-pressure hydraulic control check valve | |
| MX2012003879A (en) | Hydraulic damper spool valve. | |
| CN201753790U (en) | Safety valve for multi-way valve | |
| CN104214156A (en) | High-flow ultrahigh-pressure directly operated type proportional overflow valve | |
| CN203584781U (en) | Cartridge pilot relief valve with one-way valve | |
| CN201420717Y (en) | Overflow valve | |
| CN201723803U (en) | Direct-type proportion overflow valve | |
| CN202833379U (en) | Overlying type overflow valve | |
| CN202545395U (en) | Pilot electrohydraulic proportional overflow valve | |
| CN203023554U (en) | Multipurpose one-way overflow valve | |
| CN202510447U (en) | Flow regulating valve | |
| CN201972916U (en) | Constant-pressure control valve for axial plunger piston pump | |
| CN201513402U (en) | Pilot-operated type proportional relief valve | |
| CN202659905U (en) | Throttling valve | |
| CN204201202U (en) | A kind of Depressure valve | |
| CN203718065U (en) | Pressure release valve | |
| WO2016067102A3 (en) | Pilot hydraulic system for operating control valve | |
| CN205190406U (en) | Stack one -way throttle valve | |
| CN204533020U (en) | A kind of integrated multifunction hydraulic element | |
| CN203770756U (en) | One-way throttle valve | |
| CN104895857B (en) | Low noise cone valve | |
| CN202767943U (en) | Screw pump oil well safe pressure relief device | |
| CN202510814U (en) | Stacked proportional electromagnetic flow valve | |
| CN202788748U (en) | High pressure oil-water well sleeve pressure relief device |
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: 20130327 Termination date: 20140820 |
|
| EXPY | Termination of patent right or utility model |