CN202023957U - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN202023957U CN202023957U CN2011201443371U CN201120144337U CN202023957U CN 202023957 U CN202023957 U CN 202023957U CN 2011201443371 U CN2011201443371 U CN 2011201443371U CN 201120144337 U CN201120144337 U CN 201120144337U CN 202023957 U CN202023957 U CN 202023957U
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- valve
- flap
- rod
- valve body
- valve rod
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Abstract
The utility model provides a check valve, which belongs to the technical field of valve manufacture and resolves the problems that the existing block valve is complex in structure and high in manufacture cost. The check valve comprises a valve body and a valve rod. An inlet and an outlet are communicated with each other and arranged in the valve body. The valve rod is positioned with the valve body in the axial direction. The outer end of the valve rod is fixedly connected with a handle. A valve clack arranged in the valve body is movably inserted on the valve rod. The end portion of the valve clack is a sealed face, and an elastic part is fixedly arranged between the valve clack and the valve rod. Two ends of the elastic part respectively act on the valve clack and the valve rod and enable the valve clack to have a trend of being away from the valve rod. The inner end of the inlet and the inner end of the outlet of the valve body are both provided with an inner sealed face matched with the sealed face of the valve clack. The check valve has the advantages of simple structure, low manufacture cost and the like.
Description
Technical field
The utility model belongs to technical field of valve manufacturing, relates to a kind of valve, particularly a kind of check valve.
Background technique
Valve in use generally only plays on-off function, and does not possess the non-return effect that prevents that medium flows backwards in the valve, like this in order to prevent that medium from flowing backwards, just need install a safety check again on the basis of original valve.Adopt common valve and safety check together to use the function that just can play break-make and non-return, but increased the valve quantity of whole pipeline, increased the manufacture cost of pipeline.
At the problem that exists, people have designed various valves with check function, and some has also applied for patent, and for example the Chinese patent literature data discloses a kind of ball check valve [application number: 200420025769.0; Notice of authorization number: CN2692439Y], it comprises valve body, and the spool of a sphere is arranged in valve body, and a through hole is arranged in the spool, a valve rod passes valve body, it is inner to be connected with spool, the outer end handle that is being connected, and the through hole internal fixation support, a pilot hole is arranged in the support, the movable flap of pegging graft has sealing surface in the front portion of flap in the pilot hole, and the inner sealing surface that matches with the flap sealing surface is arranged on spool.
Above-mentioned patent is by installing flap in spherical valve core, realized the function of ball valve break-make and non-return, but complex structure, particularly need be in spool part such as mounting bracket, flap, install inconvenient, it increases support on the basis of ordinary ball valve in addition, flap forms check function, and the manufacture cost of product is far above the manufacture cost of ordinary ball valve, and product is difficult for being adopted by the user when selling.
Summary of the invention
The purpose of this utility model is at the above-mentioned problems in the prior art, and a kind of check valve of simple in structure, low cost of manufacture is provided.
The purpose of this utility model can realize by following technical proposal: a kind of check valve, comprise valve body and valve rod, the import and the outlet that have mutual UNICOM in the described valve body, described valve rod and valve body axially locating, the outer end of valve rod is fixed with handle, it is characterized in that, the movable flap that is positioned at valve body that is plugged with on the described valve rod, the end of described flap is also to be fixed with elastic component between sealing surface and flap and the valve rod, the two ends of described elastic component act on flap and valve rod respectively makes flap have trend away from valve rod, and the inner of the import of described valve body and the inner of outlet all have the inner sealing surface that matches with the sealing surface of flap.
The handle of this check valve can be manual handle or the electric handle that is rotated by driven by motor.The end that pressure is bigger in the valve body is import, when the rotation of handle drive valve rod makes the sealing surface of flap contact at the inner sealing surface of import, medium enters the elastic force that overcomes elastic component from import, thereby back down flap and flow to outlet, if enter into the medium back flow in the valve body, flap can be closed under the effect of the elastic force of elastic component and backflow active force, and flap has played the non-return effect like this; When the rotation of handle drive valve rod made the sealing surface of flap contact at the inwall of valve body, medium directly entered from import and flows to outlet again, and this moment, flap played the conducting effect; When the rotation of handle drive valve rod makes the sealing surface of flap contact at the inner sealing surface of outlet, medium can enter in the valve body from import, but the elastic force of the impact force of medium and elastic component is consistent, make flap tightly contact at the inner sealing surface of outlet, port closing, this moment, flap played the effect of closing runner.In sum, this check valve has non-return and on-off function, and only realizes by flap and valve rod, and is simple in structure, removed the essential spool of valve in the past, reduced manufacture cost.
In above-mentioned a kind of check valve, the sectional shape of described flap is T-shaped, and described flap comprises diaphragm seal and be connected in the guide rod at diaphragm seal middle part that described guide rod is plugged on the valve rod.The end face of diaphragm seal is a sealing surface, and guide rod vertically is plugged on the valve rod, and guide rod can play leading role.
In above-mentioned a kind of check valve, described diaphragm seal is tile or trapezoid shaped.Sealing surface is an arc transition like this, when the inner sealing surface that the inner of sealing surface and import and the inner of outlet all have is conflicted, good sealing effect, and when medium promotes diaphragm seal by this ball check valve, medium can evenly smoothly be turned, be difficult for forming vortex stirring, the flow resistance of medium is little, and media flow is smooth and easy.
In above-mentioned a kind of check valve, described elastic component is a spring, and spring housing is located on the guide rod.
In above-mentioned a kind of check valve, described valve interior wall has positioning hole, and the inner of described valve rod is positioned at described positioning hole.Realized the location, the inner of valve rod like this, valve rod can not be offset or play when rotating, the good stability that valve rod rotates.
In above-mentioned a kind of check valve, described valve body has the valve gap that is connected mutually, and described valve rod passes the valve gap setting.Valve gap is connected on the valve body by screw, and being provided with of valve gap made things convenient for the installation of valve rod, flap.
In above-mentioned a kind of check valve, be fixed with seal ring between described valve gap and the valve body.Seal ring has guaranteed the sealing of valve gap and valve body.
Compared with prior art, a kind of check valve of providing of the utility model has the following advantages:
1, this check valve just can be finished non-return and on-off function by valve rod and flap, and simple in structure, exploitativeness is strong.
2, this check valve has been removed the required spool part of valve, has reduced manufacture cost, and the sales price of this sample check valve must be low, easily accepted by the Consumer.
3, the diaphragm seal in this check valve is tile or trapezoid shaped, sealing surface is an arc transition, when the inner sealing surface that the inner of sealing surface and import and the inner of outlet all have is conflicted, good sealing effect, and when medium promoted diaphragm seal by this ball check valve, medium can evenly smoothly be turned, and was difficult for forming vortex stirring, the flow resistance of medium is little, and media flow is smooth and easy.
Description of drawings
Fig. 1 is the structure sectional view of this check valve.
Fig. 2 is the structure front view of this check valve.
Fig. 3 is the structure sectional view of diaphragm seal in this check valve.
Among the figure, 1, valve body; 1a, import; 1b, outlet; 2, valve rod; 3, handle; 4, flap; 4a, diaphragm seal; 4b, guide rod; 5, elastic component; 6, sealing surface; 7, inner sealing surface; 8, valve gap; 9, seal ring.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, this check valve comprises valve body 1 and valve rod 2, the import 1a and the outlet 1b that have mutual UNICOM in the valve body 1, valve body 1 has the valve gap 8 that is fixed together by screw, be fixed with seal ring 9 between valve gap 8 and the valve body 1, seal ring 9 is fixed on the annular groove that valve gap 8 is positioned at valve body 1 inner end.Valve rod 2 is column, valve rod 2 passes between valve gap 8 and valve rod 2 and the valve gap 8 and is fixed with the twice O-ring seals, and valve body 1 inwall has positioning hole, and the inner of valve rod 2 is positioned at positioning hole, locate mutually with valve body 1 inwall the inner of valve rod 2 like this, valve rod 2 can not be offset or play when rotating, the good stability that valve rod 2 rotates, and valve rod 2 circumferentially has bulge loop, bulge loop is conflicted in valve gap 8 inboards, like this when valve gap 8 is connected on the valve body 1, valve rod 2 and valve body 1 axially locating, the outer end of valve rod 2 is fixed with handle 3.The movable flap 4 that is positioned at valve body 1 that is plugged with on the valve rod 2, the end of flap 4 is also to be fixed with elastic component 5 between sealing surface 6 and flap 4 and the valve rod 2, the two ends of elastic component 5 act on flap 4 and valve rod 2 respectively makes flap 4 have trend away from valve rod 2, and the inner of the inner of the import 1a of valve body 1 and outlet 1b all has the inner sealing surface 7 that matches with the sealing surface 6 of flap 4.
Specifically, the sectional shape of flap 4 is T-shaped, and flap 4 comprises diaphragm seal 4a and the guide rod 4b that is connected in diaphragm seal 4a middle part, and guide rod 4b vertically is plugged on the valve rod 2, and guide rod 4b can play leading role, and the end face of diaphragm seal 4a is sealing surface 6.In order to guarantee the fluency of sealing effect and medium, as shown in Figure 3, diaphragm seal 4a is tile, makes sealing surface 6 be arc transition.Elastic component 5 is a spring, and spring housing is located on the guide rod 4b.Fluency when guaranteeing that flap 4 rotates with valve rod 2, the inwall of the circulation passage of valve body 1 between import 1a and outlet 1b adopts the arc transition that cooperates with sealing surface 6.
This check valve has non-return and on-off function, the end that pressure is bigger in the valve body 1 is import 1a, in the use, when 2 rotations of handle 3 drive valve rods make the sealing surface 6 of flap 4 contact at the inner sealing surface 7 of import 1a, medium enters the elastic force that overcomes elastic component 5 from import 1a, flows to outlet 1b thereby back down flap 4, if enter into the medium back flow in the valve body 1, flap 4 can be closed under the effect of the elastic force of elastic component 5 and backflow active force, and flap 4 has played the non-return effect like this; When 2 rotations of handle 3 drive valve rods made the sealing surface 6 of flap 4 contact at the inwall of valve body 1, medium directly entered from import 1a and flows to outlet 1b again, and this moment, flap 4 played the conducting effect; When 2 rotations of handle 3 drive valve rods make the sealing surface 6 of flap 4 contact at the inner sealing surface 7 of outlet 1b, medium can enter in the valve body 1 from import 1a, but the impact force of medium is consistent with the elastic force of elastic component 5, make flap 4 tightly contact at the inner sealing surface 7 of outlet 1b, outlet 1b closes, and this moment, flap 4 played the effect of closing runner.This check valve only realizes non-return and on-off function by flap 4 and valve rod 2, and is simple in structure, low cost of manufacture.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as valve body 1, import 1a, outlet 1b, valve rod 2, handle 3, flap 4, diaphragm seal 4a, guide rod 4b, elastic component 5, sealing surface 6, inner sealing surface 7, valve gap 8, seal ring 9 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (7)
1. check valve, comprise valve body (1) and valve rod (2), the import (1a) and the outlet (1b) that have mutual UNICOM in the described valve body (1), described valve rod (2) and valve body (1) axially locating, the outer end of valve rod (2) is fixed with handle (3), it is characterized in that, described valve rod (2) is gone up activity and is plugged with the flap (4) that is positioned at valve body (1), the end of described flap (4) is also to be fixed with elastic component (5) between sealing surface (6) and flap (4) and the valve rod (2), the two ends of described elastic component (5) act on flap (4) and valve rod (2) respectively makes flap (4) have trend away from valve rod (2), and the inner of the import (1a) of described valve body (1) and the inner of outlet (1b) all have the inner sealing surface (7) that matches with the sealing surface (6) of flap (4).
2. a kind of check valve according to claim 1, it is characterized in that, the sectional shape of described flap (4) is T-shaped, and described flap (4) comprises diaphragm seal (4a) and be connected in the guide rod (4b) at diaphragm seal (4a) middle part that described guide rod (4b) is plugged on the valve rod (2).
3. a kind of check valve according to claim 2 is characterized in that, described diaphragm seal (4a) is tile or trapezoid shaped.
4. according to claim 1 or 2 or 3 described a kind of check valve, it is characterized in that described elastic component (5) is a spring, spring housing is located on the guide rod (4b).
5. a kind of check valve according to claim 4 is characterized in that, described valve body (1) inwall has positioning hole, and the inner of described valve rod (2) is positioned at described positioning hole.
6. according to claim 1 or 2 or 3 described a kind of check valve, it is characterized in that described valve body (1) has the valve gap (8) that is connected mutually, described valve rod (2) passes valve gap (8) setting.
7. a kind of check valve according to claim 6 is characterized in that, is fixed with seal ring (9) between described valve gap (8) and the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201443371U CN202023957U (en) | 2011-05-06 | 2011-05-06 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201443371U CN202023957U (en) | 2011-05-06 | 2011-05-06 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202023957U true CN202023957U (en) | 2011-11-02 |
Family
ID=44848907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201443371U Expired - Lifetime CN202023957U (en) | 2011-05-06 | 2011-05-06 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202023957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352859A (en) * | 2011-11-15 | 2012-02-15 | 宜兴市迪凡特机械制造有限公司 | Multifunctional mini-resistance integrated protection device used for fan outlet side |
-
2011
- 2011-05-06 CN CN2011201443371U patent/CN202023957U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352859A (en) * | 2011-11-15 | 2012-02-15 | 宜兴市迪凡特机械制造有限公司 | Multifunctional mini-resistance integrated protection device used for fan outlet side |
| CN102352859B (en) * | 2011-11-15 | 2013-01-23 | 宜兴市迪凡特机械制造有限公司 | Multifunctional mini-resistance integrated protection device used for fan outlet side |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111102 |
|
| CX01 | Expiry of patent term |