CN203348659U - Flow adjusting valve - Google Patents
Flow adjusting valve Download PDFInfo
- Publication number
- CN203348659U CN203348659U CN 201320350941 CN201320350941U CN203348659U CN 203348659 U CN203348659 U CN 203348659U CN 201320350941 CN201320350941 CN 201320350941 CN 201320350941 U CN201320350941 U CN 201320350941U CN 203348659 U CN203348659 U CN 203348659U
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- China
- Prior art keywords
- valve
- valve seat
- seat
- elastic
- flow control
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Abstract
The utility model provides a flow adjusting valve which comprises a valve body, a main valve seat and a valve element. The main valve seat is inlaid inside a valve seat hole of the valve body, and the valve element is arranged inside the main valve seat in a penetrating mode. The flow adjusting valve further comprises an elastic valve seat, the elastic valve seat is arranged on the valve element in a surrounding mode, the elastic valve seat abuts against the main valve seat through a slope, and the elastic valve seat and the main valve seat are close to one side, where a fluid inlet is formed, of the flow adjusting valve, and the slope enables the main valve seat to exert radial inward force on the elastic valve seat. The flow adjusting valve has the good sealing effect, can effectively prevent leakage, has the certain self-compensation function, avoids the frequent replacement of the valve seats, further guarantees accurate control over the throttling area and achieves high-accuracy control over the flow.
Description
Technical field
The utility model is particularly related to a kind of flow control valve.
Background technique
There are the problems such as sealing is poor in existing flow control valve, and, for micro-flow regulating valve, because its requirement that high-precision flow is controlled is very high, it is especially crucial that its sealing problem becomes.
Micro-flow regulating valve is mainly used in control accuracy is required to high operating mode, and the minimum controllable flow rate coefficient value that duty parameter requires is normally at 0.001m
3/ h.The characteristics of micro-flow regulating valve are compact structures, and volume is little, lightweight, convenient for installation and maintenance, and the Flow characteristics had under the highi degree of accuracy occasion is controlled characteristics.
Fig. 1 has shown a kind of traditional micro-flow regulating valve, and it comprises a valve body 11, a valve seat 12 and a spool 13, and valve seat 12 is embedded in the valve seat orifice of valve body 11, and spool 13 is arranged in described valve seat 12.What such micro-flow regulating valve adopted is single valve seat, and what usually adopt is the potted line sealing, so its sealing effect is poor, easily leaks.And, because fluid washes away for a long time to valve seat, can cause valve seat to wear and tear, so just need to change continually valve seat, not only bother very much, and also unfavorable to the highi degree of accuracy control of flow.In addition, also just because of the valve base sealing weak effect, easily wear and tear and need often to change, caused micro-flow regulating valve to be difficult to reach the purpose that high-precision flow is controlled.
The model utility content
The technical problems to be solved in the utility model is in order to overcome flow control valve of the prior art, especially micro-flow regulating valve, and sealing effect is poor, need frequently more slide valve seat, be difficult to realize the defect such as high-precision flow control, and a kind of flow control valve is provided.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of flow control valve, it comprises a valve body, a main valve seat and a spool, described main valve seat is embedded in the valve seat orifice of described valve body, described spool is arranged in described main valve seat, its characteristics are, described flow control valve also comprises an elastic seat, described elastic seat is located on described spool, described elastic seat and described main valve seat by an inclined-plane mutually against and near a side of the fluid inlet of described flow control valve, described inclined-plane makes described main valve seat to apply a radially inner power to described elastic seat.
Preferably, described elastic seat and described spool interference fit.Adopt interference fit to make elastic seat tightr with coordinating of spool, realize better sealing effect.
Preferably, described elastic seat has a groove near a side of described fluid inlet.When this groove being set making main valve seat apply certain power to elastic seat, groove part branch struts, thereby abuts in more closely around spool, strengthens sealing effect.
Preferably, also be provided with an elastic component between the ladder surface of described elastic seat and described valve body.Elastic component can be realized certain self-compensating function, and, when wearing and tearing occur elastic seat, elastic component discharges its pretightening force when assembling, is resisted against the below of elastic seat, makes up the wearing and tearing that elastic seat occurs.
Preferably, described elastic component is a dishful of spring.
Preferably, also be provided with a packing ring between described elastic seat and described dish spring.Packing ring can be so that the dish spring be unlikely to be embedded in the groove of elastic seat, and the power that elastic seat is applied is more even.
Positive progressive effect of the present utility model is: the flow control valve that the utility model provides has good sealing effect, the effectively generation of Leakage prevention, and there is certain self-compensating function, avoided the frequent replacing to valve seat, also guaranteed the accurate control of orifice size, realized that the highi degree of accuracy of flow is controlled.
The accompanying drawing explanation
The sectional view that Fig. 1 is micro-flow regulating valve of the prior art.
The sectional view of the micro-flow regulating valve that Fig. 2 is the utility model preferred embodiment.
The partial enlarged drawing that Fig. 3 is P section in Fig. 2.
Embodiment
Below lift a preferred embodiment, and carry out by reference to the accompanying drawings the clearer the utility model that intactly illustrates.
Fig. 2, Fig. 3 have shown the flow control valve that the utility model provides, except the existing valve body 21 of prior art, main valve seat 22 and spool 23, it also comprises an elastic seat 24, this elastic seat 24 is located on spool 23, elastic seat 24 and main valve seat 22 by an inclined-plane 25 mutually against and near a side of the fluid inlet 26 of flow control valve, this inclined-plane 25 makes main valve seat 22 to apply a radially inner power to elastic seat 24.When valve open, the fluid that flows through valve can apply certain downward power to main valve seat 22, and this active force equally also can pass to the elastic seat 24 that is positioned at main valve seat 22 belows, due to elastic seat 24 and main valve seat 22 be by an inclined-plane 25 mutually against, so main valve seat 22 will apply a component radially to elastic seat 24, thereby makes elastic seat 24 closely abut on spool 23.
Certainly, in order to guarantee good sealing, can arrange littlely than the diameter of spool 23 by the internal diameter of elastic seat 24, that is to say, elastic seat 24 and spool 23 interference fit.
On the other hand, be in order to guarantee good sealing equally, can also one " V " connected in star 27 be set in a side of elastic seat 24 close fluid inlets 26.Like this, when elastic seat 24 is under pressure, being somebody's turn to do " V " connected in star 27 will be softened, also just can abut in more closely on spool 23, has reached good selfsealings effect.Certainly, the groove of other shapes also is fine.
In addition, between the ladder surface of elastic seat 24 and valve body 21, also be provided with an elastic component, this elastic component is a dishful of spring 28.Because elastic seat 24 can constantly wear and tear in long using process, for fear of this elastic seat 24 of frequent replacing, therefore this dish spring 28 is set.This dish spring 28 has just been compressed by pretightening force when assembling, and along with the wearing and tearing of elastic seat 24, the pretightening force of dish spring 28 is by slow release subsequently, but it abuts against elastic seat 24 all the time, thereby has played good compensating action.Certainly, it will be appreciated by those skilled in the art that dish spring 28 herein is a kind of giving an example, also can adopt other elastic components instead.
, can not embed in its " V " connected in star 27 against elastic seat 24 time for fear of dish spring 28, so be preferably between elastic seat 24 and dish spring 28, a packing ring 29 is set, the pretightening force that makes dish spring 28 discharge can put on elastic seat 24 equably.
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 (6)
1. a flow control valve, it comprises a valve body, a main valve seat and a spool, described main valve seat is embedded in the valve seat orifice of described valve body, described spool is arranged in described main valve seat, it is characterized in that, described flow control valve also comprises an elastic seat, described elastic seat is located on described spool, described elastic seat and described main valve seat by an inclined-plane mutually against and near a side of the fluid inlet of described flow control valve, described inclined-plane makes described main valve seat to apply a radially inner power to described elastic seat.
2. flow control valve as claimed in claim 1, is characterized in that, described elastic seat and described spool interference fit.
3. flow control valve as claimed in claim 1, is characterized in that, described elastic seat has a groove near a side of described fluid inlet.
4. flow control valve as claimed in claim 1, is characterized in that, also is provided with an elastic component between the ladder surface of described elastic seat and described valve body.
5. flow control valve as claimed in claim 4, is characterized in that, described elastic component is a dishful of spring.
6. flow control valve as claimed in claim 5, is characterized in that, between described elastic seat and described dish spring, also is provided with a packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320350941 CN203348659U (en) | 2013-06-18 | 2013-06-18 | Flow adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320350941 CN203348659U (en) | 2013-06-18 | 2013-06-18 | Flow adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203348659U true CN203348659U (en) | 2013-12-18 |
Family
ID=49748562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320350941 Expired - Fee Related CN203348659U (en) | 2013-06-18 | 2013-06-18 | Flow adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203348659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179989A (en) * | 2014-07-30 | 2014-12-03 | 苏州德兰能源科技股份有限公司 | Clearance type high-pressure-difference micro flow regulating valve |
-
2013
- 2013-06-18 CN CN 201320350941 patent/CN203348659U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179989A (en) * | 2014-07-30 | 2014-12-03 | 苏州德兰能源科技股份有限公司 | Clearance type high-pressure-difference micro flow regulating 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 |