CN204153250U - A kind of auto-compensation needle-valve - Google Patents
A kind of auto-compensation needle-valve Download PDFInfo
- Publication number
- CN204153250U CN204153250U CN201420622019.5U CN201420622019U CN204153250U CN 204153250 U CN204153250 U CN 204153250U CN 201420622019 U CN201420622019 U CN 201420622019U CN 204153250 U CN204153250 U CN 204153250U
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- valve
- ring
- seal ring
- seal
- valve shaft
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Abstract
The utility model discloses a kind of auto-compensation needle-valve, comprise valve body and valve shaft, the two side ends of valve body is provided with fluid inlet and fluid output, also be provided with for the reciprocating movable chamber of valve shaft in valve body, the front end of valve shaft to be stretched in movable chamber and is provided with spool, valve interior wall in spool and movable chamber forms sealing surface, the top in movable chamber is provided with Seal cage, valve shaft is successively through the nut be tightened on body top, elastic member, pressure ring, movable chamber is stretched into after being positioned at the seal ring group of Seal cage, pressure ring is in the tight seal group of the pressure of elastic member, Seal cage seals by seal ring group generation deformation.The pressure of elastic member of the present utility model passes to seal ring group by pressure ring, make seal ring group generation deformation, to adapt to wear and tear the gap of bringing due to valve shaft long-term motion, ensure that valve body has good sealing, anti-fluid is emerged from the tip-leakage of valve body.
Description
Technical field
The utility model relates to needle-valve field, particularly a kind of auto-compensation needle-valve.
Background technique
Needle-valve is arranged on fluid-transporting tubing for regulating the flow of fluid.Current needle valve structure generally comprises valve body, the two side ends of valve body is respectively arranged with fluid output and fluid inlet, the valve shaft stretching out valve body top is provided with in valve body, the sealed end of valve shaft is taper valve core, the sealing pair matched is provided with between taper valve core and the spool chamber in valve body, the aperture of sealing pair is changed, to reach the object regulating fluid flow by the motion controlling valve shaft.Prior art, mainly by being provided with the seal ring or stuffing box packing that coordinate with valve shaft in spool chamber top inner wall, is emerged in case fluid is leaked from the top of valve body.But valve shaft causes wearing and tearing to seal ring or stuffing box packing in long-term movement process, affects valve seal, shorten the working life of needle-valve, easily cause fluid to leak from the top of valve body and emerge.Moreover the fluid output of current needle-valve and fluid inlet and conveyance conduit are all adopt flange, clamping, welding, weld etc. mode is assembled, and efficiency of assembling is lower.
Model utility content
The purpose of this utility model is deficiency for existing needle-valve and defect, provides a kind of auto-compensation needle-valve, and this auto-compensation needle-valve has good airproof performance and the advantage such as to increase the service life, to solve the problem.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of auto-compensation needle-valve, comprise valve body and valve shaft, the two side ends of described valve body is provided with fluid inlet and fluid output, also be provided with for the reciprocating movable chamber of described valve shaft in described valve body, the front end of described valve shaft to be stretched in described movable chamber and is provided with spool, valve interior wall in described spool and described movable chamber forms sealing surface, it is characterized in that, the top in described movable chamber is provided with Seal cage, described valve shaft is successively through the nut be tightened on body top, elastic member, pressure ring, described movable chamber is stretched into after being positioned at the seal ring group of described Seal cage, described pressure ring is in the tight described seal ring group of the pressure of described elastic member, Seal cage seals by described seal ring group generation deformation.
In a preferred embodiment of the present utility model, described seal ring group comprises the first seal ring and the second seal ring that are axially superimposed along valve shaft, described first seal ring interior edge face is inner concave conical face, and described second seal ring exterior edge face is the evagination conical surface coordinated with described inner concave conical face.
In a preferred embodiment of the present utility model, external diameter and the described Seal cage internal diameter of described first seal ring and the second seal ring are suitable, and internal diameter and the described valve shaft external diameter of described first seal ring and the second seal ring are suitable.
In a preferred embodiment of the present utility model, the inwall in described movable chamber is provided with internal thread, and the bottom outer wall of described valve shaft is provided with the outside thread with described screw-internal thread fit.
In a preferred embodiment of the present utility model, described spool is taper valve core, and the valve interior wall sealing surface in described movable chamber is the conical seal (contact) face cooperatively interacted with described taper valve core.
In a preferred embodiment of the present utility model, be also provided with one between described second seal ring and described outside thread and be set in limited ring on described valve shaft, the internal diameter of described limited ring and the external diameter of described valve shaft suitable.
In a preferred embodiment of the present utility model, the tail end of described valve shaft also removably connects with a knob holding part.
In a preferred embodiment of the present utility model, described elastic member comprises at least one spring video disc.
In a preferred embodiment of the present utility model, also comprise first, second interface module coordinated with described fluid inlet and fluid output respectively, the outer end inner wall of described fluid inlet and fluid output is respectively arranged with first, second taper connection face,
Described first interface assembly comprises the first tightening nut and the first pipeline retaining ring that are screwed in described fluid inlet outer end, one end face of described first pipeline retaining ring is set to the first taper anchor ring abutted with described first taper connection face, the tap web angle of described first taper anchor ring is less than the tap web angle in described first taper connection face
Described second interface module comprises the second tightening nut and second pipe retaining ring that are screwed in described fluid output outer end, one end face of described second pipe retaining ring is set to the second taper anchor ring abutted with described second taper connection face, and the tap web angle of described second taper anchor ring is less than the tap web angle in described second taper connection face.
In a preferred embodiment of the present utility model, between described first tightening nut and the first pipeline retaining ring, be also provided with the first centering ring, between described second tightening nut and second pipe retaining ring, be also provided with the second centering ring.
Owing to have employed technological scheme as above, the pressure of elastic member of the present utility model passes to seal ring group by pressure ring, make seal ring group generation deformation, to adapt to wear and tear the gap of bringing due to valve shaft long-term motion, ensure that valve body has good sealing, anti-fluid is emerged from the tip-leakage of valve body.Moreover the utility model also realizes, with the assembling of pipeline, substantially increasing efficiency of assembling by interface module fast.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of a kind of embodiment of Fig. 1 the utility model.
Fig. 2 is the structural blast figure of Fig. 1.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, setting forth the utility model further below.
See a kind of auto-compensation needle-valve shown in Fig. 1 and Fig. 2, comprise valve body 100 and valve shaft 200, the two side ends of valve body 100 is provided with fluid inlet 101 and fluid output 102, the middle part of valve body 100 is vertically provided with movable chamber 110, the front end of valve shaft 200 is stretched in movable chamber 110, and valve shaft 200 can pump in movable chamber 110.In the present embodiment, the manner controlling valve shaft 200 is rotary valve shaft, so the inwall in movable chamber 110 is provided with internal thread 112, the bottom outer wall of valve shaft 200 is provided with the outside thread 201 coordinated with internal thread 112, the tail end of valve shaft 200 also removably connects with a knob holding part 220, the tail end of valve shaft 200 inserts knob holding part 220 inner chamber 221, and the mounting hole 202 of the tail end of valve shaft 200 is connected with the side direction fixed block through side direction fixed hole 222.
There is spool the front end of valve shaft 200, and in order to improve sealing effect, in the present embodiment, spool is taper valve core 210, and the valve interior wall sealing surface in movable chamber 110 is the conical seal (contact) face 111 cooperatively interacted with the conical surface 211 of taper valve core 210.Taper valve core 210 can unload replacing from valve shaft 200 front end.
The top in movable chamber 110 is provided with Seal cage 120, and the internal diameter of Seal cage 120 is larger than movable chamber 110 internal diameter.The outer wall of Seal cage 120 is provided with outside thread 103, outside thread 103 is rotary with a nut 104, the convenient location to valve body 100.The front end of valve shaft 200 is successively through stretching in movable chamber 110 after the nut 350 be tightened on valve body 100 top, elastic member 310, pressure ring 320, seal ring group 330, limited ring 340, the internal diameter of limited ring 340 and the external diameter of valve shaft 200 suitable, prevent the parts such as elastic member 310, pressure ring 320, seal ring group 330 from skidding off the front end of valve shaft 200.
The present embodiment is when assembling valve shaft 200, first the tail end of valve shaft 200 is connected with knob holding part 220 through after limited ring 340, seal ring group 330, pressure ring 320, elastic member 310 and nut 350 successively, then screw in insertion activity chamber, valve shaft 200 front end 110, tightening nut 350 again, the inner 351 of nut 350 can be pressed on valve body 100 top, and limited ring 340, seal ring group 330, pressure ring 320, elastic member 310 is limited in Seal cage 120.
Seal ring group 330 in the present embodiment comprises the first seal ring 331 and the second seal ring 332 be axially superimposed along valve shaft 200, first seal ring 331 interior edge face is inner concave conical face 331a, and the second seal ring 332 exterior edge face is the evagination conical surface 332a coordinated with inner concave conical face 331a.External diameter and Seal cage 120 internal diameter of the first seal ring 331 and the second seal ring 332 are suitable, and internal diameter and valve shaft 200 external diameter of the first seal ring 331 and the second seal ring 332 are suitable.Elastic member 310 comprises the spring video disc 311 arranged in opposite directions for a pair.
After valve shaft 200 assembles, limited ring 340, first seal ring 331 and the second seal ring 332, pressure ring 320, a pair spring video disc 311 are limited in Seal cage 120 by nut 350, pressure ring 320 is at tight first seal ring 331 and the second seal ring 332 of the pressure of a pair spring video disc 311, now, the deformation that the outer end of the inner concave conical face 331a of the first seal ring 331 can expand outwardly under pressure, fills up the gap between Seal cage 120 inwall and the first seal ring 331; And the deformation of inwardly contraction can occur under pressure in the inner of the evagination conical surface 332a of the second seal ring 332, fill up the gap between the second seal ring 332 and valve shaft 200.Even if the long-term work due to valve shaft 200 causes the change of seal clearance, the first seal ring 331 and the second seal ring 332 pairs of seal clearances are made to reach the effect of auto-compensation by the pressure of a pair spring video disc 311, and pass through the double sealing effect of the first seal ring 331 and the second seal ring 332, ensure that valve body 200 has good sealing, anti-fluid is emerged from the tip-leakage of valve body 200.
In order to make, the utility model is convenient to be connected fast with pipeline, the outer end inner wall of fluid inlet 101 and fluid output 102 is respectively arranged with first, second taper connection face 101a, 102a, fluid inlet 101 and fluid output 102 are respectively also with first, second interface module 400a, 400b is connected, due to the Placement of fluid inlet 101 and first interface assembly 400a and principle all with fluid output 102 and and the Placement of interface module 400b is the same with principle, the present embodiment is only described with regard to the Placement of fluid inlet 101 and first interface assembly 400a and principle.
First interface assembly 400a comprises and is screwed in the first tightening nut 410a, the first centering ring 430a on the outside thread 101b of fluid inlet 101 outer end and the first pipeline retaining ring 420a, one end face of the first pipeline retaining ring 421a is set to the first taper anchor ring 421a abutted with the first taper connection face 101a, and the tap web angle of the first taper anchor ring 421a is less than the tap web angle of the first taper connection face 101a.One end of first centering ring 430a is provided with the first centering step 431a, and other one end of the first pipeline retaining ring 421a first feeling relieved anchor ring 422 of being provided with that the step 431a that to feel relieved with first coordinates, the other end of the first centering ring 430a is connected on the interior edge face 411a of the first tightening nut 410a.
When pipeline is connected with fluid inlet 101, first pipeline is passed tightening nut 410a successively, first centering ring 430a, insert in fluid inlet 101 after first pipeline retaining ring 421a, now tightening nut 410a is tightened on the outside thread 101b of fluid inlet 101, because the first taper anchor ring 421a and the first taper connection face 101a mode extrude, and the tap web angle of the first taper anchor ring 421a is less than the tap web angle of the first taper connection face 101a, so the front inner wall of the first taper anchor ring 421a can inwardly be shunk, the front inner wall of the first taper anchor ring 421a and pipeline outer wall are sealed and matched, reach sealing fixed effect, substantially increase efficiency of assembling.
More than show and describe basic principle of the present utility model and 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 describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (10)
1. an auto-compensation needle-valve, comprise valve body and valve shaft, the two side ends of described valve body is provided with fluid inlet and fluid output, also be provided with for the reciprocating movable chamber of described valve shaft in described valve body, the front end of described valve shaft to be stretched in described movable chamber and is provided with spool, valve interior wall in described spool and described movable chamber forms sealing surface, it is characterized in that, the top in described movable chamber is provided with Seal cage, described valve shaft is successively through the nut be tightened on body top, elastic member, pressure ring, described movable chamber is stretched into after being positioned at the seal ring group of described Seal cage, described pressure ring is in the tight described seal ring group of the pressure of described elastic member, Seal cage seals by described seal ring group generation deformation.
2. a kind of auto-compensation needle-valve as claimed in claim 1, it is characterized in that, described seal ring group comprises the first seal ring and the second seal ring that are axially superimposed along valve shaft, described first seal ring interior edge face is inner concave conical face, and described second seal ring exterior edge face is the evagination conical surface coordinated with described inner concave conical face.
3. a kind of auto-compensation needle-valve as claimed in claim 2, is characterized in that, external diameter and the described Seal cage internal diameter of described first seal ring and the second seal ring are suitable, and internal diameter and the described valve shaft external diameter of described first seal ring and the second seal ring are suitable.
4. a kind of auto-compensation needle-valve as claimed in claim 3, is characterized in that, the inwall in described movable chamber is provided with internal thread, and the bottom outer wall of described valve shaft is provided with the outside thread with described screw-internal thread fit.
5. a kind of auto-compensation needle-valve as claimed in claim 4, is characterized in that, described spool is taper valve core, and the valve interior wall sealing surface in described movable chamber is the conical seal (contact) face cooperatively interacted with described taper valve core.
6. a kind of auto-compensation needle-valve as claimed in claim 4, is characterized in that, is also provided with one and is set in limited ring on described valve shaft between described second seal ring and described outside thread, the internal diameter of described limited ring and the external diameter of described valve shaft suitable.
7. a kind of auto-compensation needle-valve as claimed in claim 1, is characterized in that, the tail end of described valve shaft also removably connects with a knob holding part.
8. a kind of auto-compensation needle-valve as claimed in claim 1, is characterized in that, described elastic member comprises at least one spring video disc.
9. a kind of auto-compensation needle-valve as claimed in claim 4, it is characterized in that, also comprise first, second interface module coordinated with described fluid inlet and fluid output respectively, the outer end inner wall of described fluid inlet and fluid output is respectively arranged with first, second taper connection face
Described first interface assembly comprises the first tightening nut and the first pipeline retaining ring that are screwed in described fluid inlet outer end, one end face of described first pipeline retaining ring is set to the first taper anchor ring abutted with described first taper connection face, the tap web angle of described first taper anchor ring is less than the tap web angle in described first taper connection face
Described second interface module comprises the second tightening nut and second pipe retaining ring that are screwed in described fluid output outer end, one end face of described second pipe retaining ring is set to the second taper anchor ring abutted with described second taper connection face, and the tap web angle of described second taper anchor ring is less than the tap web angle in described second taper connection face.
10. a kind of auto-compensation needle-valve as claimed in claim 9, is characterized in that, is also provided with the first centering ring between described first tightening nut and the first pipeline retaining ring, is also provided with the second centering ring between described second tightening nut and second pipe retaining ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420622019.5U CN204153250U (en) | 2014-10-24 | 2014-10-24 | A kind of auto-compensation needle-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420622019.5U CN204153250U (en) | 2014-10-24 | 2014-10-24 | A kind of auto-compensation needle-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204153250U true CN204153250U (en) | 2015-02-11 |
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ID=52511366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420622019.5U Expired - Fee Related CN204153250U (en) | 2014-10-24 | 2014-10-24 | A kind of auto-compensation needle-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204153250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219995A (en) * | 2019-07-11 | 2019-09-10 | 沅亨流体科技（昆山）有限公司 | A kind of high leakproofness high pressure needle valve |
-
2014
- 2014-10-24 CN CN201420622019.5U patent/CN204153250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219995A (en) * | 2019-07-11 | 2019-09-10 | 沅亨流体科技（昆山）有限公司 | A kind of high leakproofness high pressure needle valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20201024 |