CN207378210U - The adjustable check valve of pressure difference - Google Patents
The adjustable check valve of pressure difference Download PDFInfo
- Publication number
- CN207378210U CN207378210U CN201721319778.4U CN201721319778U CN207378210U CN 207378210 U CN207378210 U CN 207378210U CN 201721319778 U CN201721319778 U CN 201721319778U CN 207378210 U CN207378210 U CN 207378210U
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- CN
- China
- Prior art keywords
- spool
- upper shell
- lower housing
- support plate
- inner cavity
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Abstract
The utility model discloses a kind of adjustable check valves of pressure difference, including upper shell, spool, spring, lower housing and support plate, the inner cavity of upper shell and lower housing is formed through shaft orientation flowing channel vertically, step is both provided in the inner cavity of upper shell and lower housing, the inner cavity that upper shell is fixedly connected with lower housing between rear two step forms spool installation room, spool is arranged in spool installation room, spring is arranged in spool and lower end is acted in support plate, support plate is positioned on the in vivo step of lower casing, and perforation in the middle part of support plate, the upper end of spool is equipped with the conical surface, the conical surface is adjacent to closing shaft orientation flowing channel with the step of upper shell under the action of the spring.The utility model can realize the switch to being fluidly connected under different pressure differences.
Description
Technical field
The utility model is related to a kind of valvings, particularly a kind of check valve of adjustable pressure difference, belong to mechanical engineering
Technical field.
Background technology
Check valve is a kind of only to allow fluid in one direction by and the direction valve that counter fluid is then ended.It is logical
The outlet of pump is often mounted on, on the one hand the compression shock of anti-locking system influences the normal work of pump, on the other hand in air pump inoperative
When anti-locking system reverse flow of fluids.Check valve is also used to separate oil circuit to prevent from disturbing, it is desirable that its positive fluid by pressure
Power loss is small, and good seal performance when reversely ending.When the fluid path mounted on system makes fluid have certain back pressure or installation
When the relief circuit of pump makes pump maintain certain control pressure, it is necessary to often adjust the rigidity of spring.When adjusting spring compression
During degree, existing one-way valve structures are generally realized by replacing spring, thereby result in larger manpower and materials needs.Therefore, such as
What design one kind can adjust initial tension of spring by self structure and be become so as to fulfill the adjustable check valve of different pressure differences as knot
The key points and difficulties of structure innovation.
The content of the invention
The purpose of the utility model is to overcome the above problems existing in the prior art, and it is adjustable unidirectional to provide a kind of pressure difference
Valve, the utility model can realize the switch to being fluidly connected under different pressure differences.
To achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of adjustable check valve of pressure difference, it is characterised in that：Including upper shell, spool, spring, lower housing and support plate,
The inner cavity of upper shell and lower housing is formed through shaft orientation flowing channel vertically, and platform is both provided in the inner cavity of upper shell and lower housing
Rank, the inner cavity that upper shell is fixedly connected with lower housing between rear two step form spool installation room, and spool is arranged on spool installation
In room, spring is arranged in spool and lower end is acted in support plate, and support plate is positioned on the in vivo step of lower casing, and supports
Perforation in the middle part of plate, the upper end of spool are equipped with the conical surface, and the conical surface is adjacent to closing shaft orientation flowing channel with the step of upper shell under the action of the spring.
The upper side of the spool is provided with radial flow path, and valve core cavity is connected by radial flow path with shaft orientation flowing channel, valve
The perforation of in-core chamber lower end is connected with shaft orientation flowing channel.
The upper shell is screwed with lower housing to be connected.
The spool cylindrical form.
Using the utility model has the advantage of：
1st, using the utility model, when the mesh volume for adjusting the upper shell and lower housing so as to changing the pretightning force of spring
When, opening and closing of the check valve under different pressure differences is adjusted.
2nd, the utility model is by adjusting screwing degree and can realizing to check valve under different pressure differences for upper shell and lower housing
Opening and closing, realize the switch to being fluidly connected under different pressure differences, simple in structure, easy to operate, installation and disassembling section are easy.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the diagrammatic cross-section of A-A in Fig. 1；
Fig. 3 is the diagrammatic cross-section of B-B in Fig. 1；
In figure mark for：1. upper shell, 2. spools, 3. springs, 4. lower housings, 5. support plates, 6, radial flow path.
Specific embodiment
Embodiment 1
A kind of adjustable check valve of pressure difference, including upper shell 1, spool 2, spring 3, lower housing 4 and support plate 5, upper shell 1
Shaft orientation flowing channel is formed through vertically with the inner cavity of lower housing 2, and step is both provided in the inner cavity of upper shell 1 and lower housing 2,
The inner cavity that upper shell 1 is fixedly connected with lower housing 2 between rear two step forms spool installation room, and spool 2 is arranged on spool installation
In room, spring 3 is arranged in spool 2 and lower end is acted in support plate 5, and support plate 5 is positioned on the step in lower housing 4,
And 5 middle part perforation of support plate, the upper end of spool 2 are equipped with the conical surface, the conical surface is adjacent to envelope under the effect of spring 3 with the step of upper shell 1
Close shaft orientation flowing channel.
In the present embodiment, the upper side of the spool 2 is provided with radial flow path 6,2 inner cavity of spool by radial flow path 6 with
Shaft orientation flowing channel connects, and the perforation of 2 inner cavity lower end of spool is connected with shaft orientation flowing channel.
In the present embodiment, the upper shell 1 is screwed with lower housing 4 to be connected.
In the present embodiment, 2 cylindrical form of spool.
Embodiment 2
The present embodiment combination attached drawing is described further the structure and operation principle of the utility model.
As shown in Figure 1, Figure 2 and Figure 3, the adjustable check valve of a kind of pressure difference, mainly by upper shell 1, spool 2, spring 3, under
Housing 4 and support plate 5 form, and the upper shell 1 is connected by screw thread with lower housing 4, and spool 2 is installed on upper shell 1 and lower casing
In the inner cavity that body 4 is formed；The spring 3 is installed in 2 cylinder of spool, and the lower end of spring 3 is acted in support plate 5；It is described
Support plate 5 is positioned on the step in lower housing 4；The spool 2 is cylindrical shape, and the upper end of spool 2 is equipped with the conical surface, it is described on
Housing 1 is internally provided with step, and the step of the conical surface of 2 upper end of spool with upper shell 1 under the effect of 3 pressure of spring is adjacent to.
When adjusting the mesh volume of the upper shell 1 and lower housing 4 so as to change the pretightning force of spring 3, it is adjusted described
Opening and closing of the check valve under different pressure differences.
The upper side of spool 2 is provided with multiple tracks radial flow path 6, when fluid pressure difference effect bottom spool 2 move downward when, valve
Step of the conical surface of 2 upper end of core no longer with upper shell 1 is adjacent to, and fluid is entered the inner cavity of spool 2 by the radial flow path.
When the pressure bigger of the check valve lower end, since the pretightning force effect and Fluid pressure effect of spring 3 make
The step for obtaining the conical surface and upper shell 1 of 2 upper end of spool is adjacent to, and the fluid of check valve lower end is made to flow to upper end without normal direction.
Claims (4)
1. a kind of adjustable check valve of pressure difference, it is characterised in that：Including upper shell（1）, spool（2）, spring（3）, lower housing（4）
And support plate（5）, upper shell（1）And lower housing（4）Inner cavity be formed through shaft orientation flowing channel, upper shell vertically（1）With under
Housing（4）Inner cavity in be both provided with step, upper shell（1）With lower housing（4）The inner cavity shape being fixedly connected between rear two step
Room, spool are installed into spool（2）It is arranged in spool installation room, spring（3）It is arranged on spool（2）Interior and lower end acts on support
Plate（5）On, support plate（5）It is positioned over lower housing（4）On interior step, and support plate（5）Middle part penetrates through, spool（2）Upper end
Equipped with the conical surface, the conical surface is in spring（3）Act on lower and upper shell（1）Step be adjacent to closing shaft orientation flowing channel.
2. the adjustable check valve of pressure difference according to claim 1, it is characterised in that：The spool（2）Upper side open
There is radial flow path（6）, spool（2）Inner cavity passes through radial flow path（6）It is connected with shaft orientation flowing channel, spool（2）Inner cavity lower end penetrate through with
Shaft orientation flowing channel connects.
3. the adjustable check valve of pressure difference according to claim 1 or 2, it is characterised in that：The upper shell（1）With lower housing
（4）Be screwed connection.
4. the adjustable check valve of pressure difference according to claim 3, it is characterised in that：The spool（2）Cylindrical form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721319778.4U CN207378210U (en) | 2017-10-13 | 2017-10-13 | The adjustable check valve of pressure difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721319778.4U CN207378210U (en) | 2017-10-13 | 2017-10-13 | The adjustable check valve of pressure difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207378210U true CN207378210U (en) | 2018-05-18 |
Family
ID=62339331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721319778.4U Active CN207378210U (en) | 2017-10-13 | 2017-10-13 | The adjustable check valve of pressure difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207378210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508613A (en) * | 2022-01-10 | 2022-05-17 | 青岛澳柯玛生活电器有限公司 | Zero cold water one-way valve of gas water heater |
-
2017
- 2017-10-13 CN CN201721319778.4U patent/CN207378210U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508613A (en) * | 2022-01-10 | 2022-05-17 | 青岛澳柯玛生活电器有限公司 | Zero cold water one-way valve of gas water heater |
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200924 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: The 1 section of No. 3 company Chuanqing Drilling Technology Information Office Chenghua District Green Road 610051 Chengdu City, Sichuan Province Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. Patentee before: SICHUAN KETE TEST TECHNOLOGY Co.,Ltd. |