CN104874099B - Check valve - Google Patents
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- CN104874099B CN104874099B CN201410072575.4A CN201410072575A CN104874099B CN 104874099 B CN104874099 B CN 104874099B CN 201410072575 A CN201410072575 A CN 201410072575A CN 104874099 B CN104874099 B CN 104874099B
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Abstract
The invention discloses a kind of check valves, comprising: valve body, spool and spring.Valve chamber is limited in valve body, valve body is equipped with the inlet channel and outlet passageway be connected with valve chamber.Spool is movably arranged in valve chamber with the direction one-way conduction valve chamber along inlet channel towards outlet passageway, and spool is medical silica-gel part.The both ends of spring are only against on spool and valve body respectively often to drive spool to close inlet channel.Check valve according to an embodiment of the present invention, by setting medical silica-gel part for spool, so that the bio-compatibility of check valve requires, so that check valve may be adapted to be applied in the air-channel system of medical instrument.Since the material is soft and lighter in weight for spool, the spring that spool can cooperate dynamics suitable is to avoid vibration is generated, to guarantee that noise will not be generated when check valve works normally in air-channel system.
Description
Technical field
The present invention relates to valve fields, more particularly, to a kind of check valve.
Background technique
Check valve disclosed in the relevant technologies is usually technical grade check valve, and the sealing material in technical grade check valve is usual
The bio-compatibility requirement of medical instrument is not met, and the noise of technical grade check valve is larger, therefore is unsuitable for applying and cure
It treats in instrument air-channel system.
Summary of the invention
The present invention is directed at least solve the technical problems existing in the prior art.For this purpose, the purpose of the present invention is to provide
A kind of check valve, the check valve may be adapted to be applied in medical instrument air-channel system, and noise is smaller when in use for the check valve.
Check valve according to an embodiment of the present invention, comprising: valve body limits valve chamber in the valve body, sets on the valve body
There is the inlet channel and outlet passageway be connected with the valve chamber；Spool, the spool are movably arranged in the valve chamber with edge
Valve chamber described in direction one-way conduction of the inlet channel towards the outlet passageway, the spool be medical silica-gel part；Bullet
Spring, the both ends of the spring are only against on the spool and the valve body logical often to drive the spool to close the air inlet respectively
Road.
Check valve according to an embodiment of the present invention, by setting medical silica-gel part for spool, so that check valve
Bio-compatibility requires, so that check valve may be adapted to be applied in the air-channel system of medical instrument.Due to the material of spool
Matter is softer and lighter in weight, therefore the spring that spool can cooperate dynamics suitable is to avoid vibration is generated, to guarantee that check valve exists
Noise will not be generated when working normally in air-channel system.
In addition, check valve according to the present invention can also have following additional technical feature:
In some embodiments of the invention, the end face towards the inlet channel of the spool is equipped with the close of annular
Platform is sealed, the sealing station is only against on the end face equipped with the inlet channel of the valve chamber.Sealing station can close air inlet as a result,
Channel.
Optionally, the cross-sectional area of the sealing station from the outlet passageway on the direction of the inlet channel gradually
Reduce.To under the premise of guaranteeing that valve core structure is simple, improve the one-way sealing of check valve, and then improve the work of check valve
Make reliability.
It specifically, is face contact between the sealing station and the end face of the valve chamber.Guaranteeing that check valve is close as a result,
Under the premise of sealing good, reliable operation, it may make the structure of valve body and spool simple, handling ease.
In some embodiments of the invention, the spool includes: ontology；First limiting stand, first limit
Platform extends outwardly from the periphery wall of the ontology；Second limiting stand, the direction of second limiting stand from the ontology are described out
The end face in gas channel extends along the direction towards the outlet passageway, and the spring overcoat is on second limiting stand and described
One end of spring stop be against first limiting stand towards on the end face of the outlet passageway.Spring can pass through first as a result,
Limiting stand and the second limiting stand are connect with spool, and spring is not easy to be detached from spool, thus guaranteeing that non-return valve operational is reliable
Under the premise of, so that the structure of check valve is simple, assembly is easy.Wherein, the setting of the second limiting stand limits the mobile position of spool
It sets.
Specifically, first limiting stand is the multiple boss for being spaced apart setting.
More specifically, second limiting stand be formed as three be spaced apart setting convex blocks, one of each convex block
The middle part towards the end face of the ontology is divided to extend to be connected with convex block described in other two.As a result, when pressed gas pushes away
When movable valve plug movement is so that spool is rested on outlet end face, pressed gas can pass through between two adjacent convex blocks and be entered
Outlet passageway to ensure that the one-way conduction of check valve, while also ensuring the structural strength of the second limiting stand.
Optionally, the ontology is formed as cylindrical.The structure of ontology is simple as a result, handling ease.
In an example of the invention, the valve body includes connected the first sub- valve body and the second sub- valve body, it is described into
Gas channel is located on the described first sub- valve body, and the outlet passageway is located on the described second sub- valve body, the first sub- valve body and
The second sub- valve body cooperation is to limit the valve chamber.
Specifically, the end face towards the described first sub- valve body of the described second sub- valve body is opened wide, and the first sub- valve body is stretched
Enter into the described second sub- valve body to limit the valve chamber with the described second sub- valve body.The first sub- valve body protrudes into as a result,
One end end face of two sub- valve bodies may be configured to air inlet end face, so that spool can cooperate with air inlet end face to close air inlet and lead to
Road.Meanwhile spring and spool can enter valve chamber from the end face of the first sub- valve body of direction of the second sub- valve body, so that check valve
Assembling process it is extremely simple.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of check valve according to an embodiment of the present invention；
Fig. 2 is state diagram of the check valve according to an embodiment of the present invention in one-way conduction；
Fig. 3-Fig. 6 is structural schematic diagram of the spool according to an embodiment of the present invention under different perspectives；
Fig. 7 is in Fig. 6 along the cross-sectional view in the direction A-A.
Appended drawing reference:
Check valve 100,
Valve body 1, the first sub- valve body 11, the second sub- valve body 12, inlet channel 13, valve chamber 14, outlet passageway 15, air inlet end face
16, outlet end face 17, center line 18, spool 2, ontology 21, sealing station 22, the first limiting stand 23, boss 231, the second limiting stand
24, convex block 241, spring 3
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "inner", "outside", " axis
To ", " radial direction ", " circumferential direction ", the orientation or positional relationship of the instructions such as " radial direction " be to be based on the orientation or positional relationship shown in the drawings,
Be merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
In the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection " should do broad sense reason
Solution, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connection；It can be directly
It is connected, the connection inside two elements or the interaction of two elements can also be can be indirectly connected through an intermediary
Relationship.For the ordinary skill in the art, can be understood with concrete condition above-mentioned term in the present invention specifically contain
Justice.
Check valve 100 according to an embodiment of the present invention is described below with reference to Fig. 1-Fig. 7.
Check valve 100 according to an embodiment of the present invention, as depicted in figs. 1 and 2, comprising: valve body 1, spool 2 and spring 3.
Valve chamber 14 is limited in valve body 1, valve body 1 is equipped with the inlet channel 13 and outlet passageway 15 be connected with valve chamber 14,
Spool 2 is movably arranged in valve chamber 14 with the direction one-way conduction valve chamber 14 along inlet channel 13 towards outlet passageway 15,
The both ends of spring 3 are only against on spool 2 and valve body 1 respectively often to drive spool 2 to close inlet channel 13.Here, " normal " refers to
It is state when check valve 100 is not ventilated.
Specifically, spool 2 is located at valve chamber as shown in Figure 1, valve chamber 14 is located between inlet channel 13 and outlet passageway 15
In 14, therefore spool 2 is between inlet channel 13 and outlet passageway 15.Spring 3 is applied to the certain elastic force of spool 2, makes
Spool 2 is obtained only to be against on the end face equipped with inlet channel 13 of valve chamber 14, as a result, in the state that check valve 100 is not ventilated, valve
Core 2 closes inlet channel 13.For convenience of description, " end face equipped with inlet channel 13 of valve chamber 14 " letter in the following description
Referred to as " air inlet end face 16 ".
The course of work of the check valve 100 under aeration status is described in detail referring to Fig. 1 and Fig. 2.
Referring to Fig. 2, when pressed gas is inputted from inlet channel 13, the pressure of gas can overcome the elastic force of spring 3, make
Obtaining pressed gas pushes spool 2 mobile, and inlet channel 13 is opened as a result, and inlet channel 13 passes through valve chamber 14 and outlet passageway 15
Connection.At this point, pressed gas can be discharged by outlet passageway 15.
Referring to Fig.1, it when pressed gas is inputted from outlet passageway 15, is total in the pressure of the elastic force and gas of spring 3
Under same-action, spool 2 contacted with air inlet end face 16 it is even closer so that inlet channel 13 be connected to valve chamber 14 one end by spool 2
Sealing, at this point, inlet channel 13 does not have gas output, so that check valve 100 has the function of one-way sealing.
To sum up, check valve 100 has from inlet channel 13 to the function of 15 one-way conduction of outlet passageway.
In the example depicted in fig. 1, valve body 1 is formed as cylindrical body, and inlet channel 13, valve chamber 14 and outlet passageway 15 are distinguished
Be formed as the inner cavity of the revolution bodily form on valve body 1, and inlet channel 13, valve chamber 14, outlet passageway 15 are coaxially set with valve body 1 respectively
It sets.Specifically, valve chamber 14 is formed as cylindrical, and the diameter of valve chamber 14 is greater than the straight of one end of the neighbouring valve chamber 14 of inlet channel 13
Diameter can form air inlet end face 16 as a result, so that spool 2 can be only against on air inlet end face 16 to close inlet channel 13.Valve chamber 14
Diameter be greater than outlet passageway 15 neighbouring valve chamber 14 one end diameter, outlet end face 17 can be formed as a result, i.e. valve chamber 14
End face equipped with outlet passageway 15.
More specifically, spring 3 is located in valve chamber 14, one end of spring 3 is only against on spool 2, and the other end of spring 3 only supports
On outlet end face 17, and spring 3 is in compressive state, and spring 3 can be applied to the certain pressing force of spool 2 as a result, often to drive
Movable valve plug 2 closes inlet channel 13.
Since the material of medical silica-gel part meets the bio-compatibility requirement of medical instrument, spool 2 uses medical silicon
Glue part, so that check valve according to an embodiment of the present invention 100 is suitable for application in the air-channel system of medical instrument.Due to valve
Core 2 is medical silica-gel part, therefore the material is soft and lighter in weight for spool 2, while the spring 3 for cooperating dynamics suitable, be may make
Spool 2 is not likely to produce vibration when opening and closing inlet channel 13, to guarantee the normal work in air-channel system of check valve 100
Noise will not be generated when making.
Check valve 100 according to an embodiment of the present invention, by setting medical silica-gel part for spool 2, so that unidirectionally
The bio-compatibility of valve 100 requires, so that check valve 100 may be adapted to be applied in the air-channel system of medical instrument.By
In spool 2, the material is soft and lighter in weight, therefore the spring 3 that spool 2 can cooperate dynamics suitable vibrates to avoid generation, thus
Guarantee that noise will not be generated when check valve 100 works normally in air-channel system.
In some embodiments of the invention, as shown in Fig. 1, Fig. 3, Fig. 6 and Fig. 7, spool 2 towards inlet channel 13
End face is equipped with the sealing station 22 of annular, and sealing station 22 is only against on the end face equipped with inlet channel 13 of valve chamber 14, that is, seals
Platform 22 is only against on air inlet end face 16, and sealing station 22 can cooperate air inlet end face 16 to close inlet channel 13 as a result,.
It specifically, is face contact between sealing station 22 and the end face of valve chamber 14, wherein air inlet end face 16 is formed as plane,
The end face towards air inlet end face 16 of sealing station 22 is again formed as plane, is guaranteeing 100 good seal of check valve, work as a result,
Under the premise of reliable, it may make valve body 1 and the structure of spool 2 simple, handling ease.
It, will be from the nozzle center towards valve chamber 14 of inlet channel 13 to outlet passageway 15 towards valve chamber for convenience of description
The straight line at 14 nozzle center is limited to center line 18, and sealing station 22 is arranged around the center line 18, the cross section of sealing station 22
For the radial section perpendicular to the center line 18, i.e., as shown in Figure 1, Figure 2 and shown in Fig. 7.
In some examples of the invention, such as Fig. 1 and Fig. 7, the cross-sectional area of sealing station 22 from outlet passageway 15 into
It is gradually reduced on the direction in gas channel 13, such as in the example depicted in fig. 7, the axial cross section of sealing station 22 is formed as symmetrical
Two semicircles, wherein axial cross section is the plane for being parallel to the axis extending direction of spool 2.
Specifically, since the material is soft for spool 2, when spool 2 is acted in the pressure of elastic force and gas by spring 3
And when just being contacted with air inlet end face 16, the contact surface between sealing station 22 and air inlet end face 16 is smaller so that sealing station 22 with
Contact force between air inlet end face 16 is smaller, can not overcome elastic force and gas pressure.At this point, spool 2 continues to air inlet end face
16 is mobile so that sealing station 22 generates biggish deformation so that the contact surface between sealing station 22 and air inlet end face 16 by
It is cumulative big.Thus, it is ensured that come into full contact between sealing station 22 and air inlet end face 16, thus guaranteeing that 2 structure of spool is simple
Under the premise of, the one-way sealing of check valve 100 is improved, and then improve the functional reliability of check valve 100.
In some embodiments of the invention, as shown in Fig. 3-Fig. 7, spool 2 includes: ontology 21,23 and of the first limiting stand
Second limiting stand 24.
Wherein, as shown in figures 1 and 3, sealing station 22 be located at ontology 21 towards on the end face of inlet channel 13, it is optional
Ground, as shown in Fig. 3-Fig. 7, ontology 21 is formed as cylindrical body, and the structure of ontology 21 is simple as a result, handling ease.
Referring to Fig.1, the first limiting stand 23 extends outwardly from the periphery wall of ontology 21, court of second limiting stand 24 from ontology 21
Extend to the end face of outlet passageway 15 along the direction towards outlet passageway 15,3 housing of spring is on the second limiting stand 24 and spring 3
One end stop be against the first limiting stand 23 towards on the end face of outlet passageway 15.Spring 3 can pass through the first limiting stand 23 as a result,
It is connect with the second limiting stand 24 with spool 2, and spring 3 is not easy to be detached from spool 2, thus guaranteeing 100 reliable operation of check valve
Under the premise of, so that the structure of check valve 100 is simple, assembly is easy.
Wherein, when 13 input pressure gas of inlet channel, and when pressed gas pushes spool 2 mobile to outlet passageway 15,
Second limiting stand 24 can be only against on outlet end face 17, to limit the shift position of spool 2, while make spool 2 steady
Surely it rests on outlet end face 17.
Specifically, the first limiting stand 23 is the multiple boss 231 for being spaced apart setting, in Fig. 3, Fig. 5 and example shown in fig. 6
In, the first limiting stand 23 includes three boss 231, and three boss 231 are evenly spaced on along the circumferential direction of ontology 21.
More specifically, as shown in Figure 2 and Figure 4, the second limiting stand 24 is formed as the multiple convex blocks 241 for being spaced apart setting, by
This, when pressed gas pushes spool 2 mobile so that spool 2 rests on outlet end face 17, pressed gas can be from adjacent two
It is passed through between a convex block 241 and enters outlet passageway 15, to ensure that the one-way conduction of check valve 100.Optionally, as schemed
Shown in 4 and Fig. 5, the second limiting stand 24 is formed as three convex blocks 241 for being spaced apart setting, a part of direction of each convex block 241
The middle part of the end face of ontology 21 extends to be connected with other two convex block 241, to ensure that the structure of the second limiting stand 24 is strong
Degree.
In some embodiments of the invention, as depicted in figs. 1 and 2, valve body 1 includes connected the first sub- valve body 11 and the
Two sub- valve bodies 12, inlet channel 13 are located on the first sub- valve body 11, and outlet passageway 15 is located on the second sub- valve body 12, the first sub- valve
Body 11 and the second sub- cooperation of valve body 12 are to limit valve chamber 14.Specifically, the first sub- valve body 11 of direction of the second sub- valve body 12
End face is opened wide, and the first sub- valve body 11 is extend into the second sub- valve body 12 to limit valve chamber 14 with the second sub- valve body 12.As a result,
One end end face for protruding into the second sub- valve body 12 of one sub- valve body 11 may be configured to air inlet end face 16 so that spool 2 can with into
Gas end face 16 cooperates to close inlet channel 13.Meanwhile spring 3 and spool 2 can be from the first sub- valves of direction of the second sub- valve body 12
The end face of body 11 enters valve chamber 14, so that the assembling process of check valve 100 is extremely simple.
Optionally, to be threadedly engaged between the first sub- valve body 11 and the second sub- valve body 12, to improve the dress of check valve 100
The convenience matched and repaired.
Check valve 100 according to an embodiment of the present invention, by using spool 2 made of medical silica-gel, so that unidirectionally
Valve 100 meets the bio-compatibility requirement of medical instrument, and the noise of check valve 100 is smaller, and then is suitable for application to Medical treatment device
In tool.It is by the way that sealing station 22 is arranged on spool 2, and between sealing station 22 and the end face equipped with inlet channel 13 of valve chamber 14
Face contact, so that 100 structure of check valve is simple, one-way sealing is good, reliable operation.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example
It is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are different
Surely identical embodiment or example is referred to.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in one or more embodiment or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (8)
1. a kind of check valve characterized by comprising
Valve body limits valve chamber in the valve body, and the valve body is equipped with inlet channel be connected with the valve chamber and outlet leads to
Road；
Spool, the spool be movably arranged in the valve chamber with along the inlet channel towards the side of the outlet passageway
To valve chamber described in one-way conduction, the spool is medical silica-gel part；
Spring, the both ends of the spring are only against on the spool and the valve body respectively often to drive described in the spool closing
Inlet channel；Wherein,
The spool includes:
Ontology；
First limiting stand, first limiting stand extend outwardly from the periphery wall of the ontology, and first limiting stand is interval
Open up the multiple boss set；
Second limiting stand, the end face of second limiting stand from the ontology towards the outlet passageway is along towards the outlet
The direction in channel extends, and the spring overcoat is on second limiting stand and one end of the spring is only against first limit
Position platform towards on the end face of the outlet passageway.
2. check valve according to claim 1, which is characterized in that the spool towards on the end face of the inlet channel
Sealing station equipped with annular, the sealing station are only against on the end face equipped with the inlet channel of the valve chamber.
3. check valve according to claim 2, which is characterized in that the cross-sectional area of the sealing station is logical from the outlet
It is gradually reduced on road to the direction of the inlet channel.
4. check valve according to claim 2, which is characterized in that between the sealing station and the end face of the valve chamber
For face contact.
5. check valve according to claim 1, which is characterized in that second limiting stand is formed as three and is spaced apart setting
Convex block, the middle part of a part of each convex block towards the end face of the ontology extend with it is convex described in other two
Block is connected.
6. check valve according to claim 1, which is characterized in that the ontology is formed as cylindrical.
7. check valve according to claim 1 to 6, which is characterized in that the valve body includes the first connected son
Valve body and the second sub- valve body, the inlet channel are located on the described first sub- valve body, and the outlet passageway is located at second son
On valve body, the first sub- valve body and the second sub- valve body cooperation are to limit the valve chamber.
8. check valve according to claim 7, which is characterized in that the second sub- valve body is towards the described first sub- valve body
End face is opened wide, and the first sub- valve body is extend into the described second sub- valve body to limit the valve with the described second sub- valve body
Chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072575.4A CN104874099B (en) | 2014-02-28 | 2014-02-28 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072575.4A CN104874099B (en) | 2014-02-28 | 2014-02-28 | Check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104874099A CN104874099A (en) | 2015-09-02 |
| CN104874099B true CN104874099B (en) | 2019-10-11 |
Family
ID=53941937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410072575.4A Active CN104874099B (en) | 2014-02-28 | 2014-02-28 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104874099B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107224342B (en) * | 2017-07-17 | 2023-09-08 | 赛克赛斯生物科技股份有限公司 | One-way valve, intragastric balloon weight losing device and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975327Y (en) * | 2006-08-03 | 2007-11-14 | 邱克敏 | One-way valve with boss spool |
| CN203322393U (en) * | 2013-05-29 | 2013-12-04 | 深圳迈瑞生物医疗电子股份有限公司 | One-way valve and anesthesia machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6524698A (en) * | 1997-03-29 | 1998-10-22 | Ji Hoon Park | Continuous injecting apparatus |
-
2014
- 2014-02-28 CN CN201410072575.4A patent/CN104874099B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975327Y (en) * | 2006-08-03 | 2007-11-14 | 邱克敏 | One-way valve with boss spool |
| CN203322393U (en) * | 2013-05-29 | 2013-12-04 | 深圳迈瑞生物医疗电子股份有限公司 | One-way valve and anesthesia machine |
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| Publication number | Publication date |
|---|---|
| CN104874099A (en) | 2015-09-02 |
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