CN208967126U - A kind of mute check valve - Google Patents
A kind of mute check valve Download PDFInfo
- Publication number
- CN208967126U CN208967126U CN201821786434.9U CN201821786434U CN208967126U CN 208967126 U CN208967126 U CN 208967126U CN 201821786434 U CN201821786434 U CN 201821786434U CN 208967126 U CN208967126 U CN 208967126U
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- valve
- guide surface
- positioning surface
- valve body
- spool
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Abstract
The utility model provides a kind of mute check valve, belongs to technical field of valve manufacturing.It solves the problems, such as that existing check valve noise is big.This mute check valve includes valve body, guide holder, spool, valve rod, sealing ring and spring, there is the first guide surface and the second guide surface in valve seat, first guide surface is connected with the second guide surface, first guide surface is arranged along the axial direction of valve body, there is angle at an acute angle between second guide surface and the axial direction of valve body, there is the first positioning surface and the second positioning surface on the lateral wall of spool, first positioning surface and the second positioning surface are connected, first positioning surface matches with the first guide surface, and first positioning surface along valve body axial direction be arranged, second positioning surface matches with the second guide surface, and second has angle at an acute angle between positioning surface and the axial direction of valve body.This mute check valve has the advantages that noise is low.
Description
Technical field
The utility model belongs to technical field of valve manufacturing, is related to a kind of mute check valve.
Background technique
Check valve is that fluid can only be flowed along water inlet, and water outlet medium can not but flow back, check valve be also known as check-valves or
Non-return valve.Check valve is used to prevent oil stream reverse flow in hydraulic system, or for preventing compressed air inverse in pneumatic system
To flowing.
Existing check valve, such as anti-flutter check valve disclosed in Chinese patent literature data [application number:
201711238315.X；Application publication number CN 108180297A] comprising shell, spool are wherein provided on shell unidirectional
The entrance and exit of valve, for spool for opening and closing the flow path between entrance and outlet, check valve further includes being mounted on shell
Interior sleeve is provided with arcuate socket between sleeve and shell, arcuate socket is configured to the channel of gas circulation, also, arcuate socket is total
Circulation area be greater than check valve inside nominal diameter；Sleeve is provided with damping hole close to one-way valved outlet position.
The anti-flutter check valve of this kind of structure, reduce check valve gas replenishment process in flutter the problem of；But this kind of structure
Anti- flutter check valve, the edge of spool front end is tapered, and the intracorporal valve seat with positioning spool of valve, the middle of valve seat is
Through-hole, the tapered surface of spool are resisted against the side wall edge of through-hole, contact for line, and the stability of contact is poor, when this kind of structure
When anti-flutter check valve is mounted in pneumatic system, high-frequency vibration can occur for the spool of check valve, which can issue ear-piercing
Cry, and the vibration will affect the performance of check valve and substantially reduce service life.
Summary of the invention
The purpose of this utility model is to provide a kind of mute check valve for the above-mentioned problems in the prior art,
The technical issues of solution is the noise for how reducing check valve, and improves check valve service life.
The purpose of this utility model can be realized by the following technical scheme: a kind of mute check valve, including valve body, guiding
Seat, spool, valve rod, sealing ring and spring have valve seat in the valve body, and the guide holder is connected in valve body, the valve rod
One end be fixedly connected with spool, the other end of the valve rod is threaded through in guide holder, and the sealing ring and spring are covered in valve rod
Outside, the spring one end, which acts on sealing ring, sticks on sealing ring on spool, and the other end of the spring acts on guiding
On seat, under the effect of spring force, the spool and sealing ring can be resisted against on valve seat, which is characterized in that the valve seat
In there is the first guide surface and the second guide surface, first guide surface is connected with the second guide surface, first guide surface edge
The axial setting of valve body, has angle at an acute angle, the outside of the spool between second guide surface and the axial direction of valve body
There is the first positioning surface and the second positioning surface, first positioning surface and the second positioning surface are connected, first positioning surface on wall
Match with the first guide surface, and first positioning surface is arranged along the axial direction of valve body, second positioning surface and the second guiding
Face matches, and has angle at an acute angle between second positioning surface and the axial direction of valve body.
When closed check valve, spool is partially embedded into valve seat, and the first positioning surface sticks on the first guide surface, and second
Positioning surface sticks on the second guide surface, and the concentricity of spool, valve rod and valve body is good, and sealing ring sticks on the second guide surface,
Uniformly, sealing effect is good, is not susceptible to leak for fitting；It is opened in check valve, when spool and valve rod move, valve rod and spool can be sent out
Raw deflection, end of first positioning surface far from the second positioning surface can be resisted against on the second guide surface, and sealing ring is avoided to be moved through
Cheng Zhongyu valve body rubs, and reduces frictional resistance, therefore can use the spring of small elastic force instead, reduces cracking pressure, avoids making a whistling sound
It is probability of happening, noise is reduced, realizes muting function, improve service life.
In a kind of above-mentioned mute check valve, the angle between second guide surface and the axial direction of valve body is in 30-60
Between degree.The stability of fitting is good, and design is reasonable.
In a kind of above-mentioned mute check valve, the angle between second positioning surface and the axial direction of valve body is in 30-60
Between degree.The stability of fitting is good, and design is reasonable.
In a kind of above-mentioned mute check valve, the spool and valve rod are an integral structure.Integral structure, secured journey
Degree is high, and stability is good.
In a kind of above-mentioned mute check valve, the spring is column spring.
Compared with prior art, mute check valve provided by the utility model in valve seat by being arranged the first of straight section formula
Guide surface, by spool be arranged straight section formula the first positioning surface, by the fitting of the first guide surface and the first positioning surface come
The concentricity of spool, valve rod and valve body is improved, leakproofness is improved；And when check valve is opened, the first positioning surface is fixed far from second
The end of plane can be resisted against on the second guide surface, and sealing ring is avoided to rub during the motion with valve body, reduce friction
Resistance reduces noise, realizes muting function.
Detailed description of the invention
Fig. 1 is the partial structure sectional view of this mute check valve.
The state diagram of spool when Fig. 2 is this mute closed check valve.
Fig. 3 is the state diagram of spool when this mute check valve is opened.
In figure, 1, valve body；11, valve seat；2, guide holder；3, spool；4, valve rod；5, sealing ring；6, spring；7, the first guiding
Face；8, the second guide surface；9, the first positioning surface；10, the second positioning surface.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, this mute check valve includes valve body 1, guide holder 2, spool 3, valve rod 4, sealing ring 5 and spring 6.
There is valve seat 11, guide holder 2 is connected in valve body 1, and one end and the spool 3 of valve rod 4 are fixedly connected with, spool 3 in valve body 1
It being an integral structure with valve rod 4, the other end of valve rod 4 is threaded through in guide holder 2, and sealing ring 5 and spring 6 cover outside valve rod 4,
Spring 6 is column spring 6, and 6 one end of spring, which acts on sealing ring 5, sticks on sealing ring 5 on spool 3, the other end of spring 6
It acts on guide holder 2, under the action of 6 elastic force of spring, spool 3 and sealing ring 5 can be resisted against on valve seat 11.
There is the first guide surface 7 and the second guide surface 8 in valve seat 11, the first guide surface 7 is connected with the second guide surface 8, the
One guide surface 7 has angle at an acute angle, this reality along the axial direction setting of valve body 1 between second guide surface 8 and the axial direction of valve body 1
It applies in example, the angle between the second guide surface 8 and the axial direction of valve body 1 is 45 degree, and in actual production, which can be 30 degree
Or 60 degree.There is the first positioning surface 9 and the second positioning surface 10, the first positioning surface 9 and the second positioning surface on the lateral wall of spool 3
10 are connected, and the first positioning surface 9 matches with the first guide surface 7, and the first positioning surface 9 is along the axial direction setting of valve body 1, the second positioning
Face 10 matches with the second guide surface 8, and has angle at an acute angle, this reality between the second positioning surface 10 and the axial direction of valve body 1
It applies in example, the angle between the second positioning surface 10 and the axial direction of valve body 1 is 45 degree, and in actual production, which can be 30
Degree or 60 degree.
As shown in Fig. 2, closed check valve, the first positioning surface 9 is fitted on the first guide surface 7 at this time, the second positioning surface 10
It is fitted on the second guide surface 8, sealing ring 5 is fitted on the second guide surface 8；As shown in figure 3, check valve is opened, spool 3 and valve
Bar 4 deflects, and the first positioning surface 9 can be resisted against on the second guide surface 8 far from the end of the second positioning surface 10.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although valve body 1, guide holder 2, spool 3, valve rod 4, sealing ring 5, spring 6, first is used more herein to be oriented to
The terms such as face 7, the second guide surface 8, the first positioning surface 9, the second positioning surface 10, but the possibility using other terms is not precluded
Property.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；It is construed as any
The additional limitation of one kind is all contrary to the spirit of the present invention.
Claims (5)
1. a kind of mute check valve, including valve body (1), guide holder (2), spool (3), valve rod (4), sealing ring (5) and spring
(6), there are valve seat (11) in the valve body (1), the guide holder (2) is connected in valve body (1), one end of the valve rod (4)
It is fixedly connected with spool (3), the other end of the valve rod (4) is threaded through in guide holder (2), and the sealing ring (5) and spring (6) are equal
Cover valve rod (4) outside, described spring (6) one end, which acts on sealing ring (5), sticks on sealing ring (5) on spool (3), described
The other end of spring (6) acts on guide holder (2), under the action of spring (6) elastic force, the spool (3) and sealing ring (5)
It can be resisted against on valve seat (11), which is characterized in that there is the first guide surface (7) and the second guide surface in the valve seat (11)
(8), first guide surface (7) is connected with the second guide surface (8), and first guide surface (7) sets along the axial direction of valve body (1)
It sets, there is angle at an acute angle, on the lateral wall of the spool (3) between second guide surface (8) and the axial direction of valve body (1)
With the first positioning surface (9) and the second positioning surface (10), first positioning surface (9) is connected with the second positioning surface (10), described
First positioning surface (9) matches with the first guide surface (7), and first positioning surface (9) is along the axial direction setting of valve body (1), institute
It states the second positioning surface (10) to match with the second guide surface (8), and between second positioning surface (10) and the axial direction of valve body (1)
With angle at an acute angle.
2. a kind of mute check valve according to claim 1, which is characterized in that second guide surface (8) and valve body (1)
Axial direction between angle between 30-60 degree.
3. a kind of mute check valve according to claim 1, which is characterized in that second positioning surface (10) and valve body
(1) the angle between axial direction is between 30-60 degree.
4. a kind of mute check valve according to claim 1 or 2 or 3, which is characterized in that the spool (3) and valve rod (4)
It is an integral structure.
5. a kind of mute check valve according to claim 1 or 2 or 3, which is characterized in that the spring (6) is column bullet
Spring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786434.9U CN208967126U (en) | 2018-10-31 | 2018-10-31 | A kind of mute check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786434.9U CN208967126U (en) | 2018-10-31 | 2018-10-31 | A kind of mute check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208967126U true CN208967126U (en) | 2019-06-11 |
Family
ID=66760816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821786434.9U Active CN208967126U (en) | 2018-10-31 | 2018-10-31 | A kind of mute check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208967126U (en) |
-
2018
- 2018-10-31 CN CN201821786434.9U patent/CN208967126U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" |
Address after: No.468 Shengtang Road, Jiaxing, Zhejiang Patentee after: Eger fluid technology (Zhejiang) Co., Ltd Address before: No.468 Shengtang Road, Jiaxing City, Zhejiang Province Patentee before: EAGLE FLUID TECHNOLOGY (JIAXING) Co.,Ltd. |
|
| CP03 | "change of name, title or address" |