CN202914871U - Anti-overshooting and anti-dismounting device for valve - Google Patents
Anti-overshooting and anti-dismounting device for valve Download PDFInfo
- Publication number
- CN202914871U CN202914871U CN201220488799.XU CN201220488799U CN202914871U CN 202914871 U CN202914871 U CN 202914871U CN 201220488799 U CN201220488799 U CN 201220488799U CN 202914871 U CN202914871 U CN 202914871U
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- China
- Prior art keywords
- pressure regulation
- connecting sleeve
- conical surface
- threaded connecting
- valve
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- Expired - Lifetime
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Abstract
The utility model provides an anti-overshooting and anti-dismounting device for a valve. The device is compact in structure and convenient to manufacture and assemble and comprises a threaded connection sleeve and a pressure adjusting rod sleeved in the threaded connection sleeve. An annular groove is opened at a position where the bottom of the pressure adjusting rod is connected with a limit platform. The threaded connection sleeve is in a two-step hollow tubular structure, an inner step contraction inner cone surface is arranged at a transition position of the two-step structure, the outside of an outer step contraction inner cone surface of the two-step structure is connected with an outer opening of the threaded connection sleeve, and simultaneously, a limit retaining ring is arranged in a groove of the outer opening; and a spring is arranged on the inside of the inner step contraction inner cone surface, and the upper portion of the spring abuts against a boss of the pressure adjusting rod. The anti-overshooting and anti-dismounting device is simple in process, convenient to machine, easy to assemble and widely applicable to threaded inserting pressure reducing valves.
Description
Technical field
The utility model relates to a kind of hydrovalve class component pressure limiting device field, is that a kind of valve is with preventing the overshoot anti-disassembling device specifically.
Background technique
Reduction valve is a kind of pressure controlled valve, the higher hydraulic coupling of the front pipeline of valve can be reduced to the required requirement of pipeline behind the valve, is widely used in the fields such as engineering mechanical device, metallurgy, lathe and industry equipment such as motor winch.Because the connecting thread of threaded connecting sleeve and valve pocket itself has the bearing capacity restriction, inner each related components also has the pressure regulation size restrictions, thereby, for not understanding the first pressure regulation in the relevant valve body parameter situation or in unwitting situation, operating this valve, easily directly damage the component in this valve even cause over pressure use security incident, so the anti-overshoot device of pressure seems especially important.
The model utility content
The technical problem that the utility model solves is to provide a kind of valve with preventing the overshoot anti-disassembling device, this anti-overshoot anti-disassembling device compact structure, be convenient to make assembling, be very suitable for the screw thread inserting type reduction valve and use, to solve the shortcoming in the above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
A kind of valve is with preventing the overshoot anti-disassembling device, comprise threaded connecting sleeve and be sleeved on the interior pressure regulation bar of threaded connecting sleeve, wherein, pressure regulation bar bottom has annular groove with the limiting platform joining place, and threaded connecting sleeve is the hollow tubular structure on two rank, and is provided with interior rank contraction inner conical surface at the crossover position place of two stage structures, and the outside that inner conical surface is shunk on the outer rank of its two stage structure is connected with outer the eating dishes without rice or wine of threaded connecting sleeve, also be provided with spacing back-up ring in the groove of eating dishes without rice or wine outside simultaneously; The inboard that inner conical surface is shunk on interior rank then is provided with spring, and spring top then withstands on the pressure regulation bar boss.
In the utility model, be connected precision and constant intensity for what guarantee pressure regulation bar and threaded connecting sleeve, also be provided with pre-load nut in the socket position of threaded connecting sleeve top and pressure regulation bar.
In the utility model, the conical surface of the contraction inner conical surface on described two stage structures is towards all downward, and process polishing transition processing on the conical surface.
In the utility model, described outer size of eating dishes without rice or wine is greater than the maximum outside diameter of spacing back-up ring, so that the once contraction of spacing back-up ring.
In the utility model, the tube wall joint place of described limiting platform and threaded connecting sleeve is provided with a square section Sealing and a circular section Sealing, and both suits that superpose are in order to improve its sealing effect.
The degree of depth is dark in the pipe of the threaded connecting sleeve that the utility model adopts, and the aperture is less, causes its gap less, and the centre also is provided with spring and runs through wherein, thereby the structure of screw-in cartridge valve is very compact.Simultaneously, being enclosed within owing to being threaded in the situation of the assembling that do not affect other component and operating mode has adopted secondary to shrink guide structure, and is furnished with the Special precision frock, at twice spacing back-up ring is packed into smoothly in the threaded connecting sleeve, and behind the spacing back-up ring of packing into, can not have any impact to other component, and can effectively limit the stroke of pressure regulation bar, and when the pressure regulation bar bore larger rotary torsion square, limit stoper still effectively can be not damaged.The structure of spacing interior ring recess can realize packing into smoothly of pressure regulation bar and not damage Sealing on the pressure regulation bar.
Beneficial effect: the utility model improves its internal structure and relative position on the basis of existing structure of relief pressure valve, make it under conventional state, remain non-dismountable state, avoid valve body and after installing, caused Sealing to damage because often be disassembled, effectively reduced the relevant cost that the valve body that causes because of breaking of Sealing is scrapped.
Description of drawings
Fig. 1 is the schematic diagram of the utility model preferred embodiment.
Fig. 2 is the detailed drawing of the spacing back-up ring position of the utility model preferred embodiment.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Use the schematic diagram of the preferred embodiment of anti-overshoot anti-disassembling device referring to a kind of valve of Fig. 1, in the present embodiment, threaded connecting sleeve 17 is designed with outer rank and shrinks inner conical surface 7 and interior rank contraction inner conical surface 8, and outer 6 the size of eating dishes without rice or wine that inner conical surface 7 is shunk on outer rank is convenient to the once contraction of spacing back-up ring 13 greater than the maximum outside diameter of spacing back-up ring 13.
In the detailed drawing of the spacing back-up ring position of preferred embodiment as shown in Figure 2, can see, because spacing back-up ring 13 grooves of threaded connecting sleeve 17 designs have thrust surface 14 and compression inner hole surface 15 and the guiding conical surface 16, moving ahead at pressure regulation bar 2 pushes it against thrust surface 14 when running into spacing back-up ring 13, and this moment, spacing back-up ring 13 was equilibrated at this position under the acting in conjunction on thrust surface 14, compression inner hole surface 15 and pressure regulation bar inclined-plane 12.
The thrust direction on pressure regulation bar inclined-plane 12 can be so that this structure can be born larger torsional moment when pressure regulation is subject to larger rotary torsion square in interior hexagonal 1, and can conquassation thrust surface 14 or release spacing back-up ring 13; The guiding conical surface 16 so that the circular section Sealing 4 on the limiting platform 18 and square section Sealing 10 can pack into smoothly by and do not cut bad; Pressure regulation bar boss 9 plays the effect of retaining spring 5, in case it causes normally pressure regulation or damage correlated parts because the limited back-up ring 13 of limit deflection blocks when pressure regulation.
When pressure regulation bar 2 was finished the precompressed of setting along screw thread 3, locking pre-load nut 11 can be finished pressure setting work.After all parts are finished assembling, under normal conditions, pressure regulation bar 2 and circular section Sealing 4 and square section Sealing 10 can't be opened, and effectively protect related components not damaged.
Above demonstration 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; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof
Claims (4)
1. a valve is with preventing the overshoot anti-disassembling device, it is characterized in that, comprise threaded connecting sleeve and be sleeved on the interior pressure regulation bar of threaded connecting sleeve, wherein, pressure regulation bar bottom has annular groove with the limiting platform joining place, and threaded connecting sleeve is the hollow tubular structure on two rank, and be provided with interior rank at the crossover position place of two stage structures and shrink inner conical surface, the outside that inner conical surface is shunk on the outer rank of its two stage structure is connected with outer the eating dishes without rice or wine of threaded connecting sleeve, simultaneously, also is provided with spacing back-up ring in the groove of eating dishes without rice or wine outside; The inboard that inner conical surface is shunk on interior rank then is provided with spring, and spring top then withstands on the pressure regulation bar boss.
2. a kind of valve according to claim 1 is characterized in that with anti-overshoot anti-disassembling device, and the socket position of described threaded connecting sleeve top and pressure regulation bar also is provided with pre-load nut.
3. a kind of valve according to claim 1 is characterized in that with anti-overshoot anti-disassembling device, and described outer size of eating dishes without rice or wine is greater than the maximum outside diameter of spacing back-up ring.
4. a kind of valve according to claim 1 is characterized in that with anti-overshoot anti-disassembling device, and the conical surface of the contraction inner conical surface on described two stage structures is towards all downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220488799.XU CN202914871U (en) | 2012-09-24 | 2012-09-24 | Anti-overshooting and anti-dismounting device for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220488799.XU CN202914871U (en) | 2012-09-24 | 2012-09-24 | Anti-overshooting and anti-dismounting device for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914871U true CN202914871U (en) | 2013-05-01 |
Family
ID=48163188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220488799.XU Expired - Lifetime CN202914871U (en) | 2012-09-24 | 2012-09-24 | Anti-overshooting and anti-dismounting device for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063322A (en) * | 2017-04-19 | 2017-08-18 | 摩瑞尔电器（昆山）有限公司 | Anti-dismounting structure and its installation and application method |
-
2012
- 2012-09-24 CN CN201220488799.XU patent/CN202914871U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063322A (en) * | 2017-04-19 | 2017-08-18 | 摩瑞尔电器（昆山）有限公司 | Anti-dismounting structure and its installation and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325000 No. 7 Xinxing Road, Three Creek Industrial Park, Ouhai District, Wenzhou, Zhejiang Patentee after: WENZHOU MERIC HYDRAULIC Co.,Ltd. Address before: 325000 No. 7 Xinxing Road, Three Creek Industrial Park, Ouhai District, Wenzhou, Zhejiang Patentee before: WENZHOU MERIC HYDRAULIC Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |
|
| CX01 | Expiry of patent term |