CN203348640U - Valve element of micro flow control valve - Google Patents
Valve element of micro flow control valve Download PDFInfo
- Publication number
- CN203348640U CN203348640U CN 201320350396 CN201320350396U CN203348640U CN 203348640 U CN203348640 U CN 203348640U CN 201320350396 CN201320350396 CN 201320350396 CN 201320350396 U CN201320350396 U CN 201320350396U CN 203348640 U CN203348640 U CN 203348640U
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- China
- Prior art keywords
- valve element
- spool
- head
- media
- valve
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Abstract
The utility model provides a valve element of a micro flow control valve. One end of the valve element is provided with the head of the valve element, the head of the valve element is a circular truncated cone, the diameters of the cross sections of the circular truncated cone are gradually reduced in the direction of the head of the valve element, and a thread-shaped flowing passage is formed in the head of the valve element. According to the valve element of the micro flow control valve, impurities and dirty objects which enter the flowing passage can be effectively cut and decomposed, and the good self-cleaning pollution-discharge function in the opening-closing process is guaranteed. The valve element has the good flow guiding effect on media, the flowing states of the media are more stable, and the ideal control effect is achieved. In the medium flowing guiding process, the valve element can generate the good step-by-step depressurization effect, the kinetic energy of the media can be gradually consumed when the media pass through the thread-shaped flowing passage, accordingly, the flowing speed of the media is effectively controlled, and the eroding problem caused by the high pressure difference is solved.
Description
Technical field
The utility model relates to modulating valve, particularly a kind of micro-flow regulating valve spool.
Background technique
Micro-flow regulating valve be mainly be applied to those to control accuracy have relatively high expectations, may be impure in medium and pollution etc., operating pressure differential is larger, velocity ratio operating mode faster, the minimum of duty parameter requirement can be controlled the Cv value normally 0.01.
Owing to being that tiny flow quantity is regulated, so the runner of valve is very tiny, once contain impurity and pollution etc. in medium, the situation that runner stops up very easily appears, this is a kind of contradiction of very difficult mediation.The micro-flow regulating valve of prior art is all much to solve the problems referred to above with needle type valve, although can solve like this problem that runner stops up, but because the needle type valve spool is very little, if also wanting the highi degree of accuracy reached for tiny flow quantity controls, can very high requirement be proposed to the processing of spool, simultaneously under operating mode, the situation that loss is even ruptured also easily occurs in the needle type valve spool faster for, flow velocity large at operating pressure differential.
The model utility content
The technical problems to be solved in the utility model is to solve the defects such as the existing processing request of problem that runner stops up is high, spool is fragile in order to overcome the available technology adopting needle type valve, and a kind of micro-flow regulating valve spool is provided.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of micro-flow regulating valve spool, its characteristics are, and an end of described spool is the spool head, and described spool head is a round platform, and the diameter of the cross section of described round platform reduces gradually towards the spool cephalad direction, and described spool head is provided with the thread-shaped runner.
Preferably, the degree of depth of described thread-shaped runner shoals gradually towards the spool cephalad direction.Can be better controlled flow like this, and be more conducive to processing.
Preferably, the tapering of described round platform is 1 to 100.
Preferably, the screw thread of described thread-shaped runner is 60 ° of screw threads.
Positive progressive effect of the present utility model is:
1, the micro-flow regulating valve spool that the utility model provides can effectively cut and decompose the impurity, the pollution that enter runner, has guaranteed that spool has good certainly clear dirt eliminating function in switching process.
2, spool of the present utility model has good guide functions to medium, can make the flowing state of medium more steady, reaches and more preferably controls effect.
3, spool of the present utility model, in the water conservancy diversion process of medium, can produce good step pressure reducing effect, makes the kinetic energy of medium consume gradually when flowing through the thread-shaped runner, thereby the flow velocity of control media effectively solves the problem of washing away that High Pressure Difference causes.
The accompanying drawing explanation
The sectional view of the micro-flow regulating valve that Fig. 1 is the utility model preferred embodiment.
The local enlarged diagram that Fig. 2 is P section in Fig. 1.
Embodiment
Below lift a preferred embodiment, and carry out by reference to the accompanying drawings the clearer the utility model that intactly illustrates.
The sectional view that Fig. 1 is a micro-flow regulating valve 1, wherein, A represents the import of modulating valve, B represents the outlet of modulating valve.In conjunction with Fig. 2, can find out, valve seat 2 is embedded in adjusting sleeve 3, and micro-flow regulating valve spool 4 is through the center hole of valve seat 2, and the inclined-plane on spool and valve seat 2 lean, the state when now being modulating valve and closing.
Spool is spool head 5 near an end of modulating valve import, and the spool head is a round platform, and the diameter of the cross section of round platform reduces gradually towards spool cephalad direction (towards the importer of modulating valve to).In addition, also be provided with thread-shaped runner 6 on spool head 5.When modulating valve is opened gradually, spool moves on gradually, the outlet that medium can flow through thread-shaped runner 6 and enter modulating valve, and the impurity in some media and pollution can be compared sharp keen screw thread cutting, decompose when flowing through thread-shaped runner 6, can realize certain certainly clear dirt eliminating function.In addition, round platform design due to spool head 5, produce increasing orifice size in the process that makes spool move on gradually, can pass through smoothly with the impurity and the pollution that allow those fail to be cut fully, decompose, this has just further strengthened the function from clear blowdown.In addition, just because of the design of thread-shaped runner 6, in MEDIA FLOW, in the process of thread-shaped runner 6, the kinetic energy of medium can reduce gradually, and so just the flow velocity of control media effectively, solve the problem of washing away that High Pressure Difference causes.
In addition, the degree of depth of thread-shaped runner 6 shoals gradually towards the spool cephalad direction, at valve, just open like this, when the pressure reduction between the namely import of modulating valve and outlet is also large, rely on darker screw thread can produce better step pressure reducing effect, and open gradually at valve, after pressure reduction diminishes gradually, utilize more shallow screw thread can produce good antihypertensive effect, so Design of Screw Thread so from deep to shallow can be better controlled flow, on the other hand, it is convenient that such Design of Screw Thread makes processing.
In the present embodiment, the tapering of round platform is 1 to 100, and the screw thread of thread-shaped runner 6 is 60 ° of screw threads.Certainly, it will be appreciated by those skilled in the art that this just scheme preferably, also can select to adopt the round platform of other taperings and the screw thread of other angles according to different operating modes.
In prior art, use needle type valve as micro-flow regulating valve, because the shape and structure of needle type valve spool body has determined rating curve, and the needle type valve spool is very little, so easily deform man-hour adding, required precision to processing is very high, and rating curve corresponding to micro-flow regulating valve spool of the present utility model depends on the processing of spool upper runner, and because the volume of spool itself is not little, so processing flow channel is relatively easy on spool, requirement on machining accuracy is not high.So spool of the present utility model can meet the requirement that tiny flow quantity is controlled better.And spool of the present utility model is owing to being not only by the spool body, but also reach the accurate control of flow by the thread-shaped runner on spool, so can be as the needle type valve spool, the situation that loss is even ruptured under operating mode, easily occurs in, flow velocity faster large at operating pressure differential.
Although more than described embodiment of the present utility model, it will be understood by those of skill in the art that this only illustrates, protection domain of the present utility model is limited by appended claims.Those skilled in the art, under the prerequisite that does not deviate from principle of the present utility model and essence, can make various changes or modifications to these mode of executions, but these changes and modification all fall into protection domain of the present utility model.
Claims (4)
1. a micro-flow regulating valve spool, is characterized in that, an end of described spool is the spool head, and described spool head is a round platform, and the diameter of the cross section of described round platform reduces gradually towards the spool cephalad direction, and described spool head is provided with the thread-shaped runner.
2. micro-flow regulating valve spool as claimed in claim 1, is characterized in that, the degree of depth of described thread-shaped runner shoals gradually towards the spool cephalad direction.
3. micro-flow regulating valve spool as claimed in claim 1, is characterized in that, the tapering of described round platform is 1 to 100.
4. micro-flow regulating valve spool as claimed in claim 1, is characterized in that, the screw thread of described thread-shaped runner is 60 ° of screw threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320350396 CN203348640U (en) | 2013-06-18 | 2013-06-18 | Valve element of micro flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320350396 CN203348640U (en) | 2013-06-18 | 2013-06-18 | Valve element of micro flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203348640U true CN203348640U (en) | 2013-12-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320350396 Expired - Fee Related CN203348640U (en) | 2013-06-18 | 2013-06-18 | Valve element of micro flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203348640U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358885A (en) * | 2014-11-04 | 2015-02-18 | 无锡市亚迪流体控制技术有限公司 | High-pressure difference and high-flow rate adjustable ratio control valve |
| CN105134984A (en) * | 2015-10-16 | 2015-12-09 | 吴忠仪表有限责任公司 | Low-flow-rate high-differential-pressure double-helix pressure reduction control valve |
-
2013
- 2013-06-18 CN CN 201320350396 patent/CN203348640U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358885A (en) * | 2014-11-04 | 2015-02-18 | 无锡市亚迪流体控制技术有限公司 | High-pressure difference and high-flow rate adjustable ratio control valve |
| CN105134984A (en) * | 2015-10-16 | 2015-12-09 | 吴忠仪表有限责任公司 | Low-flow-rate high-differential-pressure double-helix pressure reduction control 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 |
Granted publication date: 20131218 Termination date: 20170618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |