CN202001413U - Pilot valve mechanism of unloading valve - Google Patents
Pilot valve mechanism of unloading valve Download PDFInfo
- Publication number
- CN202001413U CN202001413U CN2011200222507U CN201120022250U CN202001413U CN 202001413 U CN202001413 U CN 202001413U CN 2011200222507 U CN2011200222507 U CN 2011200222507U CN 201120022250 U CN201120022250 U CN 201120022250U CN 202001413 U CN202001413 U CN 202001413U
- Authority
- CN
- China
- Prior art keywords
- valve
- pilot valve
- guide
- pilot
- unloading
- 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 - Lifetime
Links
Abstract
The utility model relates to a pilot valve mechanism of an unloading valve, which belongs to the technical field of engineering machinery and comprises a valve body, one-way valves and an unloading valve plug, wherein the one-way valves are arranged inside the valve body side by side in a matching way; a pilot valve body is arranged at the upper parts of the one-way valves and the unloading valve plug in a matching way; a pilot valve plug and a pilot valve seat are arranged from the left to the right inside the pilot valve in a matching way; the tip of a miter valve of the pilot valve plug is provided with a guide post in a matching way; the diameter of the guide post is less than that of a cavity of the pilot valve seat; and the guide post extends into the cavity of the pilot valve seat. With the adoption of the technology, the guide post is arranged at the tip of the miter valve of the pilot valve plug in a matching way and acts from the left to the right inside the cavity of the pilot valve seat all the time, so that after acting to the left, the pilot valve plug does not deviate so as to collide to cause screaming spillover and pressure wobble due to vibration and the like, thereby avoiding the defect that the single side of the miter valve is damaged so as to destroy the sealing property of the miter valve when the deviated miter valve returns to the original position; and the whole system has stable pressure, high safety and prolonged service life.
Description
Technical field
The utility model belongs to technical field of engineering machinery, is specifically related to a kind of unloading valve pilot valve mechanism.
Background technique
At present in known engineering machinery, as loader etc., its unloading valve is not because the cone valve place is provided with the front and back guiding device, after cone valve is opened, cone valve is in eccentric position easily, the impact of fluid causes overflow to utter long and high-pitched sounds and pressure shake pendulum, and eccentric simultaneously cone valve causes the sealing of the monolateral impaired destruction cone valve of base easily when return, influence whole system pressure.
The model utility content
At the above-mentioned problems in the prior art, the purpose of this utility model is to provide a kind of unloading valve pilot valve mechanism.
Described a kind of unloading valve pilot valve mechanism, comprise valve body, be equipped with the one-way valve that is set up in parallel, off-load spool in valve body, described one-way valve and off-load spool top are equipped with guide's valve body, described guide's valve inner from left to right is equipped with guide's spool and guide's valve seat, the cone valve termination that it is characterized in that described guide's spool is equipped with directional post, the diameter of described directional post is less than the diameter of guide's valve seat cavity, directional post stretches into into guide's valve seat cavity, and movable about formerly in the guide valve seat cavity.
Described a kind of unloading valve pilot valve mechanism is characterized in that described guide's spool and directional post are integrally formed.
Above-mentioned a kind of unloading valve pilot valve mechanism, comprise valve body, be equipped with the one-way valve that is set up in parallel, off-load spool in valve body, described one-way valve and off-load spool top are equipped with guide's valve body, described guide's valve inner from left to right is equipped with guide's spool and guide's valve seat, the cone valve termination of described guide's spool is equipped with directional post, the diameter of described directional post is less than the diameter of guide's valve seat cavity, directional post stretches into into guide's valve seat cavity, and movable about formerly in the guide valve seat cavity.The utility model is by adopting above-mentioned technology, formerly the cone valve termination of guide valve core is equipped with directional post, directional post is movable about all the time in guide valve seat cavity formerly, therefore formerly guide valve core behind left movement, after can not opening because of cone valve, owing to reasons such as vibrations take place eccentric, be rebuffed and cause overflow to utter long and high-pitched sounds and pressure shake pendulum, thereby avoided eccentric cone valve when return, to cause the shortcoming of sealing of the monolateral impaired destruction cone valve of base easily, make the pressure stability of whole system, the Safety performance height, and prolong its working life.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1-valve body, 2-one-way valve, 3-guide's valve seat, 4-guide's spool, 4a-directional post, 5-guide's valve body, 6-off-load spool.
Embodiment
The utility model will be further described below in conjunction with Figure of description:
As described in Figure 1, a kind of unloading valve pilot valve mechanism, comprise valve body 1, be equipped with the one-way valve that is set up in parallel 2 in valve body 1, off-load spool 6, described one-way valve 2 is equipped with guide's valve body 5 with off-load spool 6 tops, described guide's valve body 5 inside from left to right are equipped with guide's spool 4 and guide's valve seat 3, the cone valve termination of described guide's spool 4 is equipped with directional post 4a, the diameter of described directional post 4a is less than the diameter of guide's valve seat 3 cavitys, directional post 4a stretches into into guide's valve seat 3 cavitys, and it is movable about formerly in guide valve seat 3 cavitys, described directional post 4a length is greater than the ultimate range of guide's spool about 4 activities, can guarantee formerly in guide valve core 4 movement processes that directional post 4a is all the time formerly in guide valve seat 3 cavitys, therefore formerly guide valve core 4 behind left movement, after can not opening because of cone valve, owing to reasons such as vibrations take place eccentric, be rebuffed and cause overflow to utter long and high-pitched sounds and pressure shake pendulum, thereby avoided eccentric cone valve when return, to cause the shortcoming of sealing of the monolateral impaired destruction cone valve of base easily, make the pressure stability of whole system, the Safety performance height, and prolong its working life.
Claims (2)
1. unloading valve pilot valve mechanism, comprise valve body (1), be equipped with the one-way valve that is set up in parallel (2) in valve body (1), off-load spool (6), described one-way valve (2) is equipped with guide's valve body (5) with off-load spool (6) top, described guide's valve body (5) inside from left to right is equipped with guide's spool (4) and guide's valve seat (3), the cone valve termination that it is characterized in that described guide's spool (4) is equipped with directional post (4a), the diameter of described directional post (4a) is less than the diameter of guide's valve seat (3) cavity, directional post (4a) stretches into into guide's valve seat (3) cavity, and movable about formerly in guide valve seat (3) cavity.
2. a kind of unloading valve pilot valve according to claim 1 mechanism is characterized in that described guide's spool (4) and directional post (4a) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222507U CN202001413U (en) | 2011-01-24 | 2011-01-24 | Pilot valve mechanism of unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222507U CN202001413U (en) | 2011-01-24 | 2011-01-24 | Pilot valve mechanism of unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202001413U true CN202001413U (en) | 2011-10-05 |
Family
ID=44704156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200222507U Expired - Lifetime CN202001413U (en) | 2011-01-24 | 2011-01-24 | Pilot valve mechanism of unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202001413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782527A (en) * | 2016-04-01 | 2016-07-20 | 成都科盛石油科技有限公司 | Gas pressure relief valve with valve cores convenient to replace |
-
2011
- 2011-01-24 CN CN2011200222507U patent/CN202001413U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782527A (en) * | 2016-04-01 | 2016-07-20 | 成都科盛石油科技有限公司 | Gas pressure relief valve with valve cores convenient to replace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202001413U (en) | Pilot valve mechanism of unloading valve | |
| CN203880205U (en) | Automotive emergency cut-off valve | |
| CN102705299A (en) | Buffering device for air cylinder | |
| CN202732483U (en) | Water pump flow channel flow guide structure | |
| CN201844068U (en) | High-pressure hydraulic one-way valve | |
| CN202284625U (en) | Spring sheet for transmission chain joint | |
| CN102865386A (en) | Mechanical throttle valve | |
| CN202381735U (en) | On-line automatic-compensation sealing high-pressure ball valve | |
| CN105526409A (en) | Automatic exhaust valve of pried valve plug | |
| CN202301281U (en) | Novel positioning oil cylinder | |
| CN202992378U (en) | Slide rod of adjusting valve | |
| CN204327996U (en) | Pneumatic stopping valve | |
| CN203614489U (en) | Overflow valve | |
| CN103123004B (en) | Hydraulic valve with high pressure and large flow | |
| CN102434532A (en) | Mechanical throttle buffering structure for hydraulic cylinder | |
| CN203413181U (en) | Lift check valve | |
| CN202768715U (en) | Limiting device with oil locking function | |
| CN204828685U (en) | Prevent eccentric stop valve | |
| CN202438024U (en) | Fire monitor lifter capable of automatically starting and stopping | |
| CN201129166Y (en) | Shearing flashboard valve | |
| CN202719152U (en) | Gas cylinder valve sealing device | |
| CN205780899U (en) | A kind of practicality Manual pressure relief valve | |
| CN203146919U (en) | Inclined-clack check valve | |
| CN201795082U (en) | Structure for preventing push-out of valve rod of ball valve | |
| CN201884357U (en) | Hydraulic actuator of quick switching valve with circular groove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |