CN213836890U - Anti-siphon structure of water tank accessory - Google Patents
Anti-siphon structure of water tank accessory Download PDFInfo
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- CN213836890U CN213836890U CN202022854460.4U CN202022854460U CN213836890U CN 213836890 U CN213836890 U CN 213836890U CN 202022854460 U CN202022854460 U CN 202022854460U CN 213836890 U CN213836890 U CN 213836890U
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- siphon
- water
- air inlet
- seat
- inlet hole
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Abstract
The utility model discloses an anti-siphon structure of a water tank accessory, which comprises a valve body, a water inlet channel and a water outlet channel; the water stopping assembly is used for controlling the connection and disconnection between the water inlet channel and the water outlet channel; the anti-siphon unit comprises an air inlet hole and an anti-siphon seat used for opening or closing the air inlet hole, wherein the anti-siphon seat is provided with a buoyancy cavity, when water enters, the buoyancy of the buoyancy cavity overcomes the gravity of the anti-siphon seat to enable the anti-siphon seat to close the air inlet hole, when negative pressure is generated in the water inlet channel, the anti-siphon seat opens the air inlet hole and enables the water inlet channel to be communicated with the external atmosphere through the air inlet hole so as to eliminate the negative pressure in the water inlet channel, the anti-siphon seat is provided with the buoyancy cavity, and the buoyancy borne by the anti-siphon seat is greater than the dead weight, so that even if the water inlet pressure of the water inlet channel is low or even nearly zero, the anti-siphon seat can drive the anti-siphon seat to float and close under the action of the buoyancy, a sealing effect is achieved, the structure is simple, and the function is stable.
Description
Technical Field
The utility model relates to a water tank accessory prevent siphon structure.
Background
The existing anti-siphon structure generally comprises an air inlet, when the water inlet channel forms negative pressure, the water inlet channel is communicated with the outside atmosphere through the air inlet so as to eliminate the negative pressure in the water inlet channel and prevent water flow from being guided; in order to prevent normal water inflow, the water flow of the water inlet channel leaks from the air inlet hole, an anti-siphon seat for controlling the opening and closing of the air inlet hole is usually arranged, however, the existing anti-siphon seat drives the anti-siphon seat to close the air inlet hole under the action of the water inlet pressure of the water inlet channel, and when the water pressure of the water inlet channel is low, the water pressure of the water inlet channel cannot overcome the gravity of the anti-siphon seat, so that the air inlet hole cannot be closed, and the anti-siphon seat is caused to lose efficacy.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve foretell technical problem at least, provide a water tank accessory's anti-siphon structure, the anti-siphon seat of this scheme is equipped with the buoyancy chamber, and the buoyancy that the anti-siphon seat received is greater than the dead weight, even consequently even the inlet pressure of inlet channel is low or even when being nearly zero, and the anti-siphon seat also can drive self buoyancy under the buoyancy effect and close the inlet port, plays sealed effect, simple structure, and the function is stable.
In order to achieve the above object, the utility model adopts the following technical scheme:
an anti-siphon structure of a water tank fitting, comprising:
the valve body is provided with a water inlet channel and a water outlet channel;
the water stopping assembly is used for controlling the connection and disconnection between the water inlet channel and the water outlet channel;
the anti-siphon unit comprises an air inlet hole and an anti-siphon seat used for opening or closing the air inlet hole, wherein the anti-siphon seat is provided with a buoyancy cavity, when water enters, the buoyancy of the buoyancy cavity overcomes the gravity of the anti-siphon seat to enable the anti-siphon seat to close the air inlet hole, and when negative pressure is generated in the water inlet channel, the anti-siphon seat opens the air inlet hole and enables the water inlet channel to be communicated with the external atmosphere through the air inlet hole.
Preferably, the valve body is provided with an inner sleeve and an outer sleeve sleeved outside the inner sleeve, and the inner sleeve is communicated with the outer sleeve to form the water inlet channel.
Preferably, the anti-siphon seat is movably arranged at the upper end of the inner sleeve.
Preferably, the anti-siphon seat comprises a pipe body and a blocking piece arranged at the upper end of the pipe body, the buoyancy cavity is formed in the inner cavity of the pipe body, and the blocking piece is in abutting limit fit with the inner sleeve.
Preferably, the inner sleeve and/or the baffle plate are/is provided with a groove, and when the baffle plate abuts against the inner sleeve, outside air can enter the water inlet channel through the groove.
Preferably, the pipe body extends into the inner sleeve and forms a water passing gap with the inner wall of the inner sleeve.
Preferably, the outer wall of the tube body is provided with a guide rib which is matched with the inner sleeve in a guide way.
Preferably, a gland is arranged at the upper end of the valve body, and the air inlet is arranged on the gland.
Preferably, the lower end of the air inlet hole is provided with a convex ring, and the anti-siphon seat is abutted against the convex ring so as to seal the air inlet hole.
Preferably, a sealing element is further arranged on the anti-siphon seat, and the sealing element is in sealing fit with the air inlet hole.
The utility model has the advantages that:
1. the utility model relates to an anti-siphon structure of a water tank accessory, which comprises a valve body, a water inlet channel and a water outlet channel; the water stopping assembly is used for controlling the connection and disconnection between the water inlet channel and the water outlet channel; the anti-siphon unit comprises an air inlet hole and an anti-siphon seat for opening or closing the air inlet hole, wherein the anti-siphon seat is provided with a buoyancy cavity, when water enters, the buoyancy of the buoyancy cavity overcomes the gravity of the anti-siphon seat to enable the anti-siphon seat to close the air inlet hole, when negative pressure is generated in the water inlet channel, the anti-siphon seat opens the air inlet hole and enables the water inlet channel to be communicated with the external atmosphere through the air inlet hole so as to eliminate the negative pressure in the water inlet channel, the anti-siphon seat is provided with the buoyancy cavity, and the buoyancy borne by the anti-siphon seat is larger than the self weight, so that even if the water inlet pressure of the water inlet channel is low or even almost zero, the anti-siphon seat can drive the anti-siphon seat to float and close under the action of the buoyancy, a sealing effect is achieved, the air inlet hole is simple in structure, and the function is stable;
2. the siphon preventing device comprises an inner sleeve and/or a baffle, wherein the inner sleeve and/or the baffle are/is provided with a groove, when the baffle abuts against the inner sleeve, external air can enter the water inlet channel through the groove, the siphon preventing seat does not form a one-way valve effect, external air can be better sucked, the siphon preventing seat and the inner sleeve cannot be stuck together due to the fact that dirt in water is stuck on the siphon preventing seat or the inner sleeve, and the siphon preventing seat is easier to open when water enters;
3. the lower end of the air inlet hole is provided with a convex ring, the anti-siphon seat is abutted against the convex ring to seal the air inlet hole, and the anti-siphon seat and the air inlet hole are linearly sealed, so that the sealing effect is prevented from being influenced by the fact that a gap is formed between the anti-siphon seat and the air inlet hole due to the fact that the surface and the surface are in contact with each other in a concave-convex mode.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a perspective view of an anti-siphon structure of a water tank fitting of the present invention;
fig. 2 is an exploded view of an anti-siphon structure of a water tank fitting according to the present invention;
fig. 3 is a schematic view of the inner sleeve and the outer sleeve of the anti-siphon structure of the water tank accessory according to the present invention;
FIG. 4 is a cross-sectional view of an anti-siphon seat of an anti-siphon structure of a tank fitting according to the present invention;
fig. 5 is one of cross-sectional views of an anti-siphon structure of a water tank fitting according to the present invention;
fig. 6 is a second cross-sectional view of the anti-siphon structure of a water tank fitting according to the present invention;
fig. 7 is a third sectional view of an anti-siphon structure of a water tank fitting according to the present invention.
Reference numerals:
a valve body 10; a water inlet passage 11; a water outlet passage 12; an inner sleeve 13; an outer sleeve 14; a recess 15;
a water stop assembly 20;
a gland 30; an intake hole 31; a male ring 32;
an anti-siphon seat 40; a buoyancy chamber 41; a tube body 42; the guide ribs 421; a stopper piece 43; a seal 44;
a water passing gap 50.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1 to 7, an anti-siphon structure of a tank fitting includes:
a valve body 10 having a water inlet passage 11 and a water outlet passage 12;
the water stopping assembly 20 is used for controlling the connection and disconnection between the water inlet channel 11 and the water outlet channel 12;
an anti-siphon unit comprising an air inlet hole 31 and an anti-siphon seat 40 for opening or closing the air inlet hole 31, wherein the anti-siphon seat 40 has a buoyancy chamber 41, when water is supplied, the buoyancy of the buoyancy chamber 41 overcomes the gravity of the anti-siphon seat 40 to make the anti-siphon seat 40 close the air inlet hole 31, when a negative pressure is generated in the water inlet passage 11, the anti-siphon seat 40 opens the air inlet hole 31 and makes the water inlet passage 11 communicate with the external atmosphere through the air inlet hole 31.
The anti-siphon structure can also be used for any water tank fittings needing the anti-siphon function, such as a water inlet valve, a water discharge valve, a pressure bag and the like, and the water inlet valve is taken as an example for description in the embodiment;
in this embodiment, the valve body 10 is provided with an inner sleeve 13 and an outer sleeve 14 sleeved outside the inner sleeve 13, and the inner sleeve 13 is communicated with the outer sleeve 14 to form the water inlet channel 11.
In this embodiment, the anti-siphon seat 40 is movably disposed at the upper end of the inner sleeve 13.
In this embodiment, the anti-siphon seat 40 includes a tube 42 and a blocking plate 43 disposed at the upper end of the tube 42, the buoyancy chamber 41 is formed in the inner cavity of the tube 42, and the blocking plate 43 is abutted against the inner sleeve 13 for limiting and matching.
In this embodiment, the inner sleeve 13 and/or the blocking plate 43 are/is provided with the groove 15, and when the blocking plate 43 abuts against the inner sleeve 13, the external air can enter the water inlet channel 11 through the groove 15, specifically, the groove 15 is provided at the top of the inner sleeve 13, so that the anti-siphon seat 40 does not form a one-way valve effect, and can better absorb the external air, and the anti-siphon seat 40 and the inner sleeve 13 are not adhered together due to the dirt in water adhering to the anti-siphon seat 40 or the inner sleeve 13, and the siphon seat is easier to open when water enters.
In this embodiment, the tube 42 extends into the inner sleeve 13 and forms a water gap 50 with the inner wall of the inner sleeve 13.
In this embodiment, the outer wall of the tube 42 is provided with a guiding rib 421 which is in guiding fit with the inner sleeve 13.
In this embodiment, a gland 30 is disposed at the upper end of the valve body 10, and the air inlet 31 is disposed on the gland 30.
In this embodiment, the lower end of the air inlet hole 31 is provided with a convex ring 32, the anti-siphon seat 40 abuts against the convex ring 32 to seal the air inlet hole 31, and the anti-siphon seat 40 and the air inlet hole 31 are linearly sealed, so that the sealing effect is prevented from being affected by the fact that a gap is formed between the surface and the surface due to concave-convex contact.
In this embodiment, the anti-siphon seat 40 is further provided with a sealing member 44, and the sealing member 44 is in sealing fit with the air inlet hole 31.
The specific working process of this embodiment:
when water enters, the buoyancy of the buoyancy chamber 41 overcomes the gravity of the anti-siphon seat 40 to make the anti-siphon seat 40 close the air inlet hole 31, and the water flow of the inner sleeve 13 flows to the outer sleeve 14 through the water passing gap 50;
when negative pressure is generated in the water inlet channel 11, the anti-siphon seat 40 opens the air inlet hole 31, and makes the water inlet channel 11 communicate with the outside atmosphere through the air inlet hole 31, and outside air enters the inner sleeve 13 through the air inlet hole 31 and the groove 15 to eliminate the negative pressure in the water inlet channel 11.
The anti-siphon seat 40 of this scheme is equipped with buoyancy chamber 41, and the buoyancy that the anti-siphon seat 40 received is greater than the dead weight, therefore even the inlet pressure of inlet channel 11 is low or even when being nearly zero, anti-siphon seat 40 also can drive self buoyancy under the buoyancy and close inlet port 31, plays sealed effect, simple structure, and the function is stable.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (10)
1. An anti-siphon structure of a water tank fitting, comprising:
the valve body is provided with a water inlet channel and a water outlet channel;
the water stopping assembly is used for controlling the connection and disconnection between the water inlet channel and the water outlet channel;
the anti-siphon unit comprises an air inlet hole and an anti-siphon seat used for opening or closing the air inlet hole, wherein the anti-siphon seat is provided with a buoyancy cavity, when water enters, the buoyancy of the buoyancy cavity overcomes the gravity of the anti-siphon seat to enable the anti-siphon seat to close the air inlet hole, and when negative pressure is generated in the water inlet channel, the anti-siphon seat opens the air inlet hole and enables the water inlet channel to be communicated with the external atmosphere through the air inlet hole.
2. The anti-siphon structure of water tank fitting according to claim 1, wherein the valve body is provided with an inner sleeve and an outer sleeve sleeved outside the inner sleeve, and the inner sleeve is communicated with the outer sleeve to form the water inlet channel.
3. The anti-siphon structure of a cistern fitting as claimed in claim 2, wherein the anti-siphon seat is movably provided at the upper end of the inner sleeve.
4. The anti-siphon structure of the water tank accessory according to claim 2, characterized in that the anti-siphon seat comprises a tube body and a baffle plate arranged at the upper end of the tube body, the buoyancy chamber is formed in the inner cavity of the tube body, and the baffle plate is abutted and in limit fit with the inner sleeve.
5. The anti-siphon structure of the water tank fitting according to claim 4, characterized in that the inner sleeve and/or the blocking sheet are provided with grooves, and when the blocking sheet abuts against the inner sleeve, the external air can enter the water inlet channel through the grooves.
6. The anti-siphon structure of a water tank fitting according to claim 4, wherein the tube body extends into the inner sleeve and forms a water passing gap with the inner wall of the inner sleeve.
7. The anti-siphon structure of the water tank fitting according to claim 4, characterized in that the outer wall of the tube body is provided with a guide rib which is in guide fit with the inner sleeve.
8. The anti-siphon structure of a water tank fitting according to claim 1, wherein a press cover is provided on an upper end of the valve body, and the air intake hole is provided on the press cover.
9. The anti-siphon structure of a cistern fitting as claimed in claim 1, wherein the lower end of the air inlet hole is provided with a convex ring, and the anti-siphon seat abuts against the convex ring to seal the air inlet hole.
10. The anti-siphon structure of a cistern fitting as claimed in claim 1, wherein the anti-siphon seat is further provided with a sealing member, and the sealing member is in sealing engagement with the air inlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022854460.4U CN213836890U (en) | 2020-12-02 | 2020-12-02 | Anti-siphon structure of water tank accessory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022854460.4U CN213836890U (en) | 2020-12-02 | 2020-12-02 | Anti-siphon structure of water tank accessory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213836890U true CN213836890U (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022854460.4U Active CN213836890U (en) | 2020-12-02 | 2020-12-02 | Anti-siphon structure of water tank accessory |
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| Country | Link |
|---|---|
| CN (1) | CN213836890U (en) |
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2020
- 2020-12-02 CN CN202022854460.4U patent/CN213836890U/en active Active
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