CN201406738Y - Anti-siphon non-return valve - Google Patents
Anti-siphon non-return valve Download PDFInfo
- Publication number
- CN201406738Y CN201406738Y CN2009203029222U CN200920302922U CN201406738Y CN 201406738 Y CN201406738 Y CN 201406738Y CN 2009203029222 U CN2009203029222 U CN 2009203029222U CN 200920302922 U CN200920302922 U CN 200920302922U CN 201406738 Y CN201406738 Y CN 201406738Y
- Authority
- CN
- China
- Prior art keywords
- nut
- rubber bushing
- carriage
- return
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000011010 flushing procedure Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model relates to an anti-siphon non-return valve, which comprises an adapter nut installed with a water outlet part of a flushing valve in a matched manner and a locking nut used for fixing a sewer pipe, wherein a bracket and a rubber bushing are arranged in an inner cavity of the adapter nut in sequence, flangings are respectively arranged at the top parts of the bracket and the rubber bushing, and are clamped between the water outlet part of the flushing valve and the adapter nut, a through hole is formed on the side wall of the adapter nut, an opening communicated with the through hole is formed on the side wall of the bracket, the rubber bushing takes a horn shape with an upper opening with the diameter greater than that of a lower opening, and the bracket is provided withan inner surface adaptable to the shape of the rubber bushing. The anti-siphon non-return valve has the advantages of reasonable design structure, convenient mounting and high reliability; and since the flow passage of the non-return valve adopts a normally-open structure, the influence to water flow is little, the instantaneous flow during flushing is high, and the flushing effect is good.
Description
Technical field
The utility model relates to a kind of anti-siphon check (non-return) valve that is used for closet.
Background technology
The closet in many places all disposes flushing valve, the position of flushing valve generally is provided with the position of being convenient to user's operation, the bottom utilizes sewer pipe to be connected on the closet, and the entrance side of flushing valve connects municipal water pipe, in water-rinsing process, when flushing valve cuts out, therefore water in the pipeline section between flushing valve delivery port and the closet can cause the inner chamber on this pipeline section top to produce negative pressure still toward current downflow, siphonage occurs, with coming on the sewage suck-back, pollute municipal water supply easily.For head it off, people are equipped with unidirectional check (non-return) valve in the outlet of flushing valve, its structure is to be provided with the elasticity limit diaphragm in valve body, this diaphragm under normal conditions (when promptly not washing by water) with pipe sealing, when opening flushing valve, diaphragm is backed down under hydraulic action, and current pour in the urinal after by diaphragm, after having dashed water, hydraulic pressure disappears, diaphragm resets under elastic force and suction function, pipe sealing is got up, thereby avoid sewage to be sucted, but this check (non-return) valve is owing to adopted normally closed structure, the runner design is unreasonable, and the instantaneous delivery of water is less in water-rinsing process, has a strong impact on developing result.
The utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of rational in infrastructure, flow passage resistance force of waterproof is little, instantaneous delivery is big anti-siphon check (non-return) valve.
The technical scheme that the utility model adopted is:
A kind of anti-siphon check (non-return) valve, comprise switching nut that cooperates installation with the flushing valve outlet part and the locking nut that is used for fixing sewer pipe, described switching nut intracavity is provided with carriage and rubber bushing successively, the top of carriage and rubber bushing respectively is provided with flanging, this flanging is clamped between flushing valve outlet part and the switching nut, the sidewall of switching nut is provided with through hole, the sidewall of carriage is provided with the opening that is communicated with through hole, what described rubber bushing was the upper shed diameter greater than the under shed diameter is horn-like, and carriage has the inner surface that adapts with the rubber bushing shape.
The beneficial effects of the utility model are: because the carriage in the rubber bushing outside and switching nut sidewall are provided with opening and through hole, be in communication with the outside, when negative pressure appears in the pipeline after having dashed water, rubber bushing produces distortion under this negative pressure is used, outside air is entered in the pipe from through hole, opening, thereby eliminate the negative pressure in the flushing valve outlet conduit, prevent that sewage from being drunk up, the design is rational in infrastructure, the reliability height, and the runner of check (non-return) valve is normal opening structure, little to the influence of current, instantaneous delivery during bath is big, and developing result is good.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a cut-away structure chart of the present utility model.
The specific embodiment
With reference to Fig. 1, shown in Figure 2, a kind of anti-siphon check (non-return) valve, comprise switching nut 1 that cooperates installation with flushing valve 7 outlet parts and the locking nut 2 that is used for fixing sewer pipe 8, switching nut 1 inner chamber is provided with carriage 3 and rubber bushing 4 successively, the top of carriage 3 and rubber bushing 4 respectively is provided with flanging 31,41, this flanging 31,41 are clamped between flushing valve outlet part and the switching nut 1, the sidewall of switching nut 1 is provided with through hole 11, the sidewall of carriage 3 is provided with the opening 32 that is communicated with through hole 11, rubber bushing 4 is the horn shape of upper shed diameter greater than the under shed diameter, and carriage 3 has the inner surface that adapts with rubber bushing 4 shapes.
When opening flushing valve and wash by water, water flows downward, because the water stream channel of rubber bushing 4 is horn-like, under water flow pressure, the external surface of rubber bushing 4 is close to the inner surface of carriage 3, and carriage 3 openings 32 are blocked, and makes water can not flow out extraneous from opening 32.
After having dashed water, flushing valve cuts out, produce negative pressure in the pipeline of flushing valve water outlet side, rubber bushing is blocked part rubber past internal strain under the effect of inside and outside pressure reduction at bracket openings place, outside air is entered in the pipe from through hole 11, opening 32, thereby eliminate the negative pressure in the flushing valve outlet conduit, prevent that sewage from being drunk up.
The design's check (non-return) valve cross section of fluid channel is long-pending big, and is always normally open, and therefore the instantaneous delivery when bath is big, and developing result is good.And it is simple in structure, easy for installation.
In addition, in order to make more reasonable structure, switching nut 1 through hole 11 is symmetrically arranged with four; The opening 32 of carriage 3 is a long trough, and is symmetrically arranged with two, and this design makes product not need to adjust especially the level of through hole 11 and opening 32 when mounted towards also being in communication with the outside.
The design is arranged with sealing ring 5 in the installation position of sewer pipe 8, sealing ring 5 has the hypotenuse that can be compressed by switching nut 1 lower end, under the effect of switching nut 1 and locking nut 2, utilize sealing ring 5 that the external surface of sewer pipe 8 is fixed, make that reliability is higher when sewer pipe is installed.Further, carriage 3 bottom arranged outside have annular groove 33, and annular groove 33 is equipped with joint ring 6.
The above be the utility model preferred embodiment, it does not constitute the restriction to the utility model protection domain, so long as realize that with essentially identical means the purpose of this utility model all should belong to protection domain of the present utility model.
Claims (7)
1. anti-siphon check (non-return) valve, it is characterized in that: comprise switching nut (1) that cooperates installation with the flushing valve outlet part and the locking nut (2) that is used for fixing sewer pipe, described switching nut (1) inner chamber is provided with carriage (3) and rubber bushing (4) successively, the top of carriage (3) and rubber bushing (4) respectively is provided with flanging (31,41), this flanging (31,41) be clamped between flushing valve outlet part and the switching nut (1), the sidewall of switching nut (1) is provided with through hole (11), the sidewall of carriage (3) is provided with the opening (32) that is communicated with through hole (11), described rubber bushing (4) is upper shed diameter horn-like greater than the under shed diameter, and carriage (3) has the inner surface that adapts with rubber bushing (4) shape.
2. a kind of anti-siphon check (non-return) valve according to claim 1 is characterized in that: the through hole (11) of described switching nut (1) is symmetrically arranged with four.
3. according to claim 1 or 2 described a kind of anti-siphon check (non-return) valves, it is characterized in that: the opening (32) of described carriage (3) is a long trough, and is symmetrically arranged with two.
4. according to claim 1 or 2 described a kind of anti-siphon check (non-return) valves, it is characterized in that: be provided with sealing ring (5) between switching nut (1) and the locking nut (2), sealing ring (5) has the hypotenuse (51) that can be compressed by nut (1) lower end of transferring.
5. a kind of anti-siphon check (non-return) valve according to claim 3 is characterized in that: be provided with sealing ring (5) between switching nut (1) and the locking nut (2), sealing ring (5) has the hypotenuse (51) that can be compressed by nut (1) lower end of transferring.
6. according to claim 1 or 2 described a kind of anti-siphon check (non-return) valves, it is characterized in that: carriage (3) bottom arranged outside has annular groove (33), and annular groove (33) is equipped with joint ring (6).
7.
A kind of anti-siphon check (non-return) valve according to claim 4 is characterized in that: carriage (3) bottom arranged outside has annular groove (33), and annular groove (33) is equipped with joint ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203029222U CN201406738Y (en) | 2009-05-07 | 2009-05-07 | Anti-siphon non-return valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203029222U CN201406738Y (en) | 2009-05-07 | 2009-05-07 | Anti-siphon non-return valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201406738Y true CN201406738Y (en) | 2010-02-17 |
Family
ID=41677669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203029222U Expired - Lifetime CN201406738Y (en) | 2009-05-07 | 2009-05-07 | Anti-siphon non-return valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201406738Y (en) |
-
2009
- 2009-05-07 CN CN2009203029222U patent/CN201406738Y/en not_active Expired - Lifetime
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100217 |