CN204828787U - Vacuum switching -over valve - Google Patents
Vacuum switching -over valve Download PDFInfo
- Publication number
- CN204828787U CN204828787U CN201520549214.4U CN201520549214U CN204828787U CN 204828787 U CN204828787 U CN 204828787U CN 201520549214 U CN201520549214 U CN 201520549214U CN 204828787 U CN204828787 U CN 204828787U
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- valve
- valve body
- air outlet
- check valve
- breather check
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Abstract
The utility model relates to a vacuum switching -over valve, including a valve body, the valve body includes an inlet channel, 1 the 1st air outlet channel and 1 the 2nd air outlet channel, inlet channel is equipped with an air inlet, to this air inlet be equipped with the check valve that admits air in the valve body, admitting air, the effect has an elastomeric element on the check valve, in order to constitute the normally closed state of check valve admits air, an air outlet channel is equipped with a first gas outlet, to this first gas outlet be equipped with a first check valve of giving vent to anger in the valve body, the 2nd air outlet channel is equipped with a second gas outlet, to this second gas outlet be equipped with the second check valve of giving vent to anger in the valve body. The utility model discloses simple structure, low cost, and to commutate the switching of valve sensitive, and the reliability is high, stability is good to can effectively prevent the leakage of air inlet department.
Description
Technical field
The utility model relates to a kind of selector valve, is specifically related to a kind of vacuum reversal valve.
Background technique
So-called selector valve is the position control valve with two or more liquid form.It can realize gas, the communication of liquid medium, cut-out and commutation.
Existing vacuum reversal valve comprises valve body, spool and drives cylinder, valve body is provided with vacuum interface, is connected with variable-diameter interface below valve body, is also connected with mandrel connector in the middle of valve body and driving cylinder.In actual use, existing vacuum reversal valve complex structure, fabricating cost are high.Drive cylinder because needs connect, therefore its reliability can not effectively ensure, and existing vacuum reversal valve effectively can not prevent the Leakage Gas at its suction port place.
Therefore, a kind of vacuum reversal valve is provided to be technical barrier to be solved in the utility model.
Summary of the invention
The utility model provides a kind of vacuum reversal valve, its objective is the shortcoming existed to solve existing vacuum reversal valve, reduces the fabricating cost of vacuum reversal valve, improves the reliability of vacuum reversal valve, effectively prevent vacuum reversal valve suction port place from leaking.
For reaching the problems referred to above, the technical solution adopted in the utility model is: a kind of vacuum reversal valve, comprises a valve body, and described valve body comprises a gas-entered passageway, one first outlet passageway and one second outlet passageway; Described gas-entered passageway is provided with a suction port, for this suction port, is provided with a breather check valve in described valve body; On described breather check valve, effect has an elastic member, and this elastic member forces described breather check valve to be normally off; Described first outlet passageway is provided with one first air outlet, for this first air outlet, is provided with one first outgassing nonreturn valve in described valve body; Described second outlet passageway is provided with one second air outlet, for this second air outlet, is provided with one second outgassing nonreturn valve in described valve body.
Further, the cross section of described valve body is F shape.
Further, the first air outlet of described valve body and/or the second air outlet place are also connected with variable-diameter interface.
Further, the outer circumferential face of described variable-diameter interface is also provided with outside thread.
Further, described valve body also comprises a scaffold, this scaffold is fixedly connected on described valve body and fixes for the installation of described valve body.
Further, described elastic member one end connects the valve of described breather check valve, and the relatively described valve body of the other end is fixed, and forces described breather check valve to move to the direction of throttle down.
Further, described elastic member adopts spring.
Utility model works principle and the advantage had are: the valve body of vacuum reversal valve of the present utility model comprises gas-entered passageway, the first outlet passageway and the second outlet passageway, breather check valve is provided with in gas-entered passageway, first outlet passageway is provided with the first outgassing nonreturn valve, the second outgassing nonreturn valve is provided with in second outlet passageway, and effect has an elastic member on breather check valve, form the normally off of breather check valve.The utility model by three passages, will be given vent to anger and be divided into two-way, and utilize positive/negative-pressure to realize the automatic switchover of air-flow, and breather check valve acts on flexible parts, thus realize normally closed without under air-suction state of gas-entered passageway.The utility model structure is simple, with low cost, the switching of selector valve is sensitive, and reliability is high, good stability, and can effectively prevent suction port place from leaking.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing 1 is the stereogram of vacuum reversal valve in the present embodiment;
Accompanying drawing 2 is the structural representation of vacuum reversal valve in the present embodiment.
In above accompanying drawing: 1, valve body; 2, gas-entered passageway; 20, breather check valve; 21, spring; 3, the first outlet passageway; 30, the first outgassing nonreturn valve; 4, the second outlet passageway; 40, the second outgassing nonreturn valve; 5, variable-diameter interface; 50, outside thread; 6, scaffold.
Embodiment
Embodiment: a kind of vacuum reversal valve
See accompanying drawing 1,2, a kind of vacuum reversal valve, comprises valve body 1, and the cross section of valve body 1 is F shape.Valve body 1 comprises a gas-entered passageway 2, first outlet passageway 3 and second outlet passageway 4.
Wherein, in gas-entered passageway 2, be provided with a suction port, for this suction port, in valve body 1, be provided with a breather check valve 20.On breather check valve 20, effect has an elastic member, elastic member adopts spring 21, one end of this spring 21 connects the valve of breather check valve 20, the relative valve body 1 of the other end is fixed, breather check valve 20 is forced (generally to refer to the state of suction port without air inlet) when not being subject to other external force except gravity, moving in direction to throttle down, makes this breather check valve 20 be in normally off.
First outlet passageway 3 is provided with the first air outlet, for this first air outlet, is provided with one first outgassing nonreturn valve 30 in valve body 1.Second outlet passageway 4 is provided with one second air outlet, for this second air outlet, is provided with one second outgassing nonreturn valve 40 in described valve body 1.
In order to make this vacuum reversal valve be connected with the effective sealing of other parts, be also connected to a variable-diameter interface 5 in the first air outlet of valve body 1 and the second air outlet place, the outer circumferential face of this variable-diameter interface 5 is provided with outside thread 50.Realize vacuum reversal valve and extraneous expanding channels by the outside thread 50 of this variable-diameter interface 5 and outer surface thereof, and guarantee that filling jointing without gas leaks.
Wherein, described valve body 1 also comprises a scaffold 6, this scaffold 6 is fixedly connected on valve body 1, and this scaffold 6 is provided with attachment hole, is fixed by this vacuum reversal valve by scaffold 6.
Introduce the working principle of this device below further:
In the present embodiment, valve body 1 comprises a gas-entered passageway 2, first outlet passageway 3 and second outlet passageway 4, breather check valve 20 is provided with in gas-entered passageway 2, the first outgassing nonreturn valve 30 is provided with in first outlet passageway 3, be provided with the second outgassing nonreturn valve 40 in second outlet passageway 4, and on breather check valve 20, effect there is an elastic member.In working order, gas enters gas-entered passageway 2 from breather check valve 20, and when without air inlet, this elastic member forces breather check valve 20 to be closed, and prevents air-flow from leaking from this suction port.When the external world of connection first outlet passageway 3 is negative pressure, because gas can flow in the environment of low-pressure (low density) from the environment of high pressure (high concentration), therefore, gas just flows out from the first outlet passageway 3; In like manner, when the external world of connection second outlet passageway 4 is negative pressure, gas just flows out from the second outlet passageway 4, thus realizes the automatic switchover direction of gas, realizes the commutation flowing of gas.Vacuum reversal valve of the present utility model is given vent to anger and is divided into two-way, utilizes positive/negative-pressure to realize the automatic switchover of air-flow.Vacuum reversal valve structure of the present utility model is simple, with low cost and the switching of selector valve is sensitive, and reliability is high, good stability, and can effectively prevent suction port place from leaking.
For above-described embodiment, the issuable change of the utility model is described below:
1, in above-described embodiment, the cross section of described vacuum reversal valve can also be other shapes such as E shape, as long as can provide a gas-entered passageway 2, first outlet passageway 3 and the second outlet passageway 4.
2, in above-described embodiment, the first air outlet and/or the second air outlet place of described valve body 1 are also connected with variable-diameter interface 5, wherein, can connect variable-diameter interface 5, a second air outlet connection generic interface in the first air outlet place; Or an air outlet connects generic interface, the second air outlet place connects variable-diameter interface 5; Or the first air outlet is all connected variable-diameter interface 5 with the second air outlet place, and user can select connection interface according to actual conditions.
3, in above-described embodiment, described variable-diameter interface 5 outer circumferential face is also provided with outside thread 50, and being achieved a fixed connection by outside thread is sealed.Certainly, this structure can also be fixedly connected with a seal ring and seal by a generic interface.
4, in above-described embodiment, breather check valve 20 acts on flexible parts, this elastic member adopts spring 21, one end of spring 21 connects the valve of breather check valve 20, the relative valve body 1 of the other end is fixed, forcing the direction of breather check valve 20 when not being subject to other external force except gravity to throttle down to be moved, making this breather check valve 20 be in normally off.In fact an extension spring can also be adopted to realize, this extension spring one end is fixed on valve body 1, the other end connects the valve of this breather check valve 20, when this breather check valve 20 is not subject to other external force except gravity, extension spring pulls the valve of this breather check valve 20, force its direction to throttle down to be moved, this breather check valve 20 can be made equally to be in normally off.
5, in above-described embodiment, in fact can also comprise the 3rd outlet passageway, the 4th outlet passageway, the 3rd outlet passageway is provided with the 3rd air outlet, for the 3rd air outlet, is provided with one the 3rd outgassing nonreturn valve in valve body 1.In like manner, the 4th outlet passageway is provided with the 4th air outlet, for the 4th air outlet, is provided with one the 4th outgassing nonreturn valve in valve body 1.Although do not provide embodiment, those of ordinary skill in the art, under the inspiration of above-described embodiment, easily draw the result that the outlet passageway of the 3rd, the 4th outlet passageway or more than four articles also can be implemented.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (7)
1. a vacuum reversal valve, comprises a valve body (1), it is characterized in that: described valve body (1) comprises a gas-entered passageway (2), one first outlet passageway (3) and one second outlet passageway (4);
Described gas-entered passageway (2) is provided with a suction port, for this suction port, is provided with a breather check valve (20) in described valve body (1); The upper effect of described breather check valve (20) has an elastic member, and this elastic member forces described breather check valve (20) in normally off;
Described first outlet passageway (3) is provided with one first air outlet, for this first air outlet, is provided with one first outgassing nonreturn valve (30) in described valve body (1);
Described second outlet passageway (4) is provided with one second air outlet, for this second air outlet, is provided with one second outgassing nonreturn valve (40) in described valve body (1).
2. vacuum reversal valve according to claim 1, is characterized in that: the cross section of described valve body (1) is F shape.
3. vacuum reversal valve according to claim 1 and 2, is characterized in that: the first air outlet and/or the second air outlet place of described valve body (1) are also connected with variable-diameter interface (5).
4. vacuum reversal valve according to claim 3, is characterized in that: the outer circumferential face of described variable-diameter interface (5) is also provided with outside thread (50).
5. vacuum reversal valve according to claim 1 and 2, is characterized in that: described valve body (1) also comprises a scaffold (6), and this scaffold (6) is fixedly connected on described valve body (1) and fixes for the installation of described valve body (1).
6. vacuum reversal valve according to claim 1, it is characterized in that: described elastic member one end connects the valve of described breather check valve (20), the relatively described valve body (1) of the other end is fixed, and forces described breather check valve (20) to move to the direction of throttle down.
7. the vacuum reversal valve according to claim 1 or 6, is characterized in that: described elastic member adopts spring (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520549214.4U CN204828787U (en) | 2015-07-27 | 2015-07-27 | Vacuum switching -over valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520549214.4U CN204828787U (en) | 2015-07-27 | 2015-07-27 | Vacuum switching -over valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828787U true CN204828787U (en) | 2015-12-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520549214.4U Active CN204828787U (en) | 2015-07-27 | 2015-07-27 | Vacuum switching -over valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204828787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020253071A1 (en) * | 2019-06-18 | 2020-12-24 | 苏州思维医疗科技有限公司 | Rotary control valve |
-
2015
- 2015-07-27 CN CN201520549214.4U patent/CN204828787U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020253071A1 (en) * | 2019-06-18 | 2020-12-24 | 苏州思维医疗科技有限公司 | Rotary control valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |