CN203614835U - Plate type overflow valve - Google Patents
Plate type overflow valve Download PDFInfo
- Publication number
- CN203614835U CN203614835U CN201320666866.7U CN201320666866U CN203614835U CN 203614835 U CN203614835 U CN 203614835U CN 201320666866 U CN201320666866 U CN 201320666866U CN 203614835 U CN203614835 U CN 203614835U
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- Prior art keywords
- valve
- pressure
- valve body
- pressure regulating
- board
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- Expired - Fee Related
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Abstract
The utility model discloses a plate type overflow valve, relates to the field of hydraulic control, and aims to solve the problems of complex structure, large size and difficulty in assembling and maintaining in the conventional overflow valve. The overflow valve comprises a valve body, a valve core and a pressure regulating device, wherein the valve body is sealed by adopting a front end cover and a back end cover; the valve core is arranged in the valve body; the pressure regulating device comprises a pressure regulating bolt passing through the front end cover, and a pressure regulating spring connected between the valve core and the pressure regulating bolt; the pressure regulating bolt is in threaded connection with the front end cover; a pressure regulating hand wheel is arranged at the tail end of the pressure regulating bolt; the back end cover is provided with an oil inlet; the valve body is provided with an oil overflow hole; the oil overflow hole is selectively communicated with the oil inlet through the valve core. When oil in the oil inlet generates hydraulic pressure for overcoming the pre-stress of the pressure-regulating spring, the valve core is opened, oil enters the valve cavity and flows out of an overflow port, and the system pressure is unloaded. The overflow valve is simple in structure, and convenient and rapid for assembling and maintaining. A pressure preset value can be adjusted in real time by rotating the pressure regulating hand wheel, high pressure can be borne inside the valve body, and the pressure can be controlled conveniently and flexibly.
Description
Technical field
The utility model relates to hydraulic control field, is specifically related to a kind of simple in structurely, assembles easy to maintenancely, and valve inner can bear the board-like relief valve of larger pressure.
Background technique
Relief valve is generally used in the hydraulic system automation control in the fields such as lathe, metallurgy, mine, molding machine; it is the critical elements in hydraulic system; can make hydraulic system maintain set up pressure and approach constant or prevent system pressure overloading, in hydraulic equipment, mainly play level pressure overflow, voltage stabilizing, system unloaded and safety protection effect.Its working principle is: in the time that system is normally worked, valve closing, only has Open valve in the time that system pressure exceedes set pressure; make hydraulic oil overflow; carry out overload protection, system pressure is no longer increased, relief valve set pressure can be adjusted by adjusting handle.Mostly there is complex structure in existing relief valve, assembling inconvenient maintenance, and valve inner can not bear the defect of larger pressure.
Model utility content
The defect existing in order to solve above-mentioned technology, it is a kind of simple in structure that the utility model provides, and assembles easy to maintenancely, and valve inner can bear the board-like relief valve of larger pressure.
The utility model is realized the technological scheme that above-mentioned technique effect adopts:
A kind of board-like relief valve, comprise the valve body that employing front cover, rear end cover seal and be located at spool and the regulator in described valve body, described regulator comprise run through the regulator bolts of described front cover and be connected to described spool and described regulator bolts between spring, described rear end cover is provided with the filler opening communicating with the inside cavity of described valve body, and the sidewall of described valve body is provided with oil spilling mouth.
The board-like relief valve of above-mentioned one, described spool is between described filler opening and described oil spilling mouth, and the front end of described spool and described filler opening fit tightly.
The board-like relief valve of above-mentioned one, the front end of described regulator bolts is provided with fixing rod, and described fixing rod stretches into the inside cavity of described valve body and interts in described spring, and the other end of described spring is socketed on the loop bar of described spool rear end.
The board-like relief valve of above-mentioned one, the length of described fixing rod be described spring length 2/5 to 3/5 between.
The board-like relief valve of above-mentioned one, described front cover embeds in described valve body, and forms a surface of subsidence at the front-end face of described valve body.
The board-like relief valve of above-mentioned one, described surface of subsidence is provided with the fastening base for fixing described regulator bolts.
The board-like relief valve of above-mentioned one, the end of described regulator bolts is provided with regulating hand wheel of pressure.
The beneficial effects of the utility model are: this structure of relief valve is simple, assemble easy to maintenance, can regulate in real time pressure predefined value by rotating regulating hand wheel of pressure, in addition, by the front cover design of sunk type, and on regulator bolts, install fastening base additional, and make valve inner can bear larger pressure, pressure control is convenient, flexible.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-valve body, 2-front cover, 3-rear end cover, 4-spool, 5-regulator bolts, 6-regulating hand wheel of pressure, 7-spring, 8-fastening base, 9-nut, 10-filler opening, 11-oil spilling mouth, 12-fixing rod, 13-loop bar.
Embodiment
For making that the utility model is had to further understanding, below with reference to Figure of description and specific embodiment, the utility model is described in further detail:
Shown in Fig. 1, a kind of board-like relief valve, comprise the valve body 1 that employing front cover 2, rear end cover 3 seal and be located at spool 4 and the regulator in valve body 1, regulator comprise run through the regulator bolts 5 of front cover 2 and be connected to spool 4 and regulator bolts 5 between spring 7, rear end cover 3 is provided with the filler opening 10 communicating with the inner cavity of valve body 1, and the sidewall of valve body 1 is provided with oil spilling mouth 11.
When enforcement, spool 4 is between filler opening 10 and oil spilling mouth 11, and the front end of spool 4 and filler opening 10 fit tightly.The front end of regulator bolts 5 is provided with fixing rod 12, fixing rod 12 stretches into the inner cavity of valve body 1 and interts in spring 7, the length of fixing rod 10 be spring 7 length 2/5 to 3/5 between, the design of this ratio, on the one hand, pre compressed magnitude that can restraining spring 7, avoid the preset pressure value of valve body 1 inside to exceed the maximum load of valve, on the other hand, fixing rod 10 can play leading role, and spring 7 can be stretched vertically along fixing rod 10.Meanwhile, the other end of spring 7 is socketed on the loop bar 13 of spool 4 rear ends.In order to increase the pressure load in valve body 1, board-like relief valve described in the utility model adopts the front cover 2 of sunk type, and front cover 2 sinks in valve body 1, and forms a surface of subsidence at the front-end face of valve body 1.This surface of subsidence is provided with the fastening base 8 for fixing regulator bolts 5, and fastening base 8 is provided with nut 9, between regulator bolts 5 and front cover 2, fastening base 8, nut 9 for being threaded.The end of regulator bolts 5 is provided with regulating hand wheel of pressure 6.Clockwise rotating regulating hand wheel of pressure 6 can drive regulator bolts 5 to move to the cavity in valve body 1, increase the pre compressed magnitude of spring 7, the pressure predefined value of relief valve is increased, rotating counterclockwise regulating hand wheel of pressure 6 can drive regulator bolts 5 to the outer movement of valve body 1, reduce the pre compressed magnitude of spring 7, the pressure predefined value of relief valve is reduced.
The working principle of this relief valve is: when original state, spool 4 is closely fitted in filler opening 10 places under the prestressing force of spring 7, filler opening 10 and the cavity in valve body 1 are cut off mutually, when the oil liquid pressure at filler opening 10 places is greater than the maximum prestress of spring 7, while being the maximum set pressure value of relief valve, spring 7 is compressed, spool 4 is opened, cavity conducting in filler opening 10 and valve body 1, fluid enters the cavity in valve body 1 and gushes from oil spilling mouth 11, hydraulic system is carried out to discharge degree, in the time that the oil liquid pressure at filler opening 10 places is less than the maximum prestress of spring 7, spring 7 recovers deformation, promote spool 4 and be fitted in filler opening 10 places, filler opening 10 and the cavity in valve body 1 are cut off mutually, relief valve restPoses.By repeatedly opening and closing automatically of spool 4, hydraulic system is carried out to level pressure overflow and system unloaded, guarantee the normal automatically working of hydraulic system.This structure of relief valve is simple, assemble easy to maintenance, by rotate regulating hand wheel of pressure can regulate in real time pressure predefined value, in addition, by the front cover design of sunk type, and on regulator bolts, install fastening base additional, make valve inner can bear larger pressure, pressure control is convenient, flexible.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications; these changes and improvements all fall in claimed scope of the present utility model, and the protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (7)
1. a board-like relief valve, it is characterized in that, comprise the valve body that employing front cover, rear end cover seal and be located at spool and the regulator in described valve body, described regulator comprise run through the regulator bolts of described front cover and be connected to described spool and described regulator bolts between spring, described rear end cover is provided with the filler opening communicating with the inside cavity of described valve body, and the sidewall of described valve body is provided with oil spilling mouth.
2. the board-like relief valve of one according to claim 1, is characterized in that, described spool is between described filler opening and described oil spilling mouth, and the front end of described spool and described filler opening fit tightly.
3. the board-like relief valve of one according to claim 1, it is characterized in that, the front end of described regulator bolts is provided with fixing rod, and described fixing rod stretches into the inside cavity of described valve body and interts in described spring, and the other end of described spring is socketed on the loop bar of described spool rear end.
4. the board-like relief valve of one according to claim 3, is characterized in that, the length of described fixing rod be described spring length 2/5 to 3/5 between.
5. the board-like relief valve of one according to claim 1, is characterized in that, described front cover embeds in described valve body, and forms a surface of subsidence at the front-end face of described valve body.
6. the board-like relief valve of one according to claim 5, is characterized in that, described surface of subsidence is provided with the fastening base for fixing described regulator bolts.
7. according to the board-like relief valve of the one described in claim 1 or 3, it is characterized in that, the end of described regulator bolts is provided with regulating hand wheel of pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320666866.7U CN203614835U (en) | 2013-10-25 | 2013-10-25 | Plate type overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320666866.7U CN203614835U (en) | 2013-10-25 | 2013-10-25 | Plate type overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614835U true CN203614835U (en) | 2014-05-28 |
Family
ID=50767482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320666866.7U Expired - Fee Related CN203614835U (en) | 2013-10-25 | 2013-10-25 | Plate type overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614835U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654437A (en) * | 2017-11-23 | 2018-02-02 | 王雅莲 | A kind of adjustable overflow valve calibrated automatically |
| CN116972205A (en) * | 2023-09-04 | 2023-10-31 | 杜商精机（嘉兴）有限公司 | High-safety overflow valve with buffering function |
-
2013
- 2013-10-25 CN CN201320666866.7U patent/CN203614835U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654437A (en) * | 2017-11-23 | 2018-02-02 | 王雅莲 | A kind of adjustable overflow valve calibrated automatically |
| CN116972205A (en) * | 2023-09-04 | 2023-10-31 | 杜商精机（嘉兴）有限公司 | High-safety overflow valve with buffering function |
| CN116972205B (en) * | 2023-09-04 | 2023-12-29 | 杜商精机（嘉兴）有限公司 | High-safety overflow valve with buffering function |
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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: 20140528 Termination date: 20151025 |
|
| EXPY | Termination of patent right or utility model |