CN219491191U - Backflow-preventing air spacing structure of water inlet valve - Google Patents
Backflow-preventing air spacing structure of water inlet valve Download PDFInfo
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- CN219491191U CN219491191U CN202320041847.9U CN202320041847U CN219491191U CN 219491191 U CN219491191 U CN 219491191U CN 202320041847 U CN202320041847 U CN 202320041847U CN 219491191 U CN219491191 U CN 219491191U
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Abstract
The utility model discloses a backflow-preventing air interval structure of a water inlet valve, which comprises a water inlet valve body and a water inlet guide pipe of a water supply tank; the water inlet valve body is fixed above the honeycomb duct, the lower part of the water inlet valve body is provided with a water passing pipeline, the left side of the upper part is provided with a water outlet pipeline, the right side of the upper part is provided with a support column, the right side of the water passing pipeline is provided with a water inlet, the left side is communicated with the water outlet pipeline, the top end of the water outlet pipeline transversely extends to cross over the upper part of the honeycomb duct and is connected with the support column, the transverse extension part of the water outlet pipeline is provided with a water outlet right above the honeycomb duct, and an air interval is arranged between the water outlet and the top end of the honeycomb duct. The utility model can effectively prevent the water backflow of the water tank, has stable structure, is not easy to damage, and does not cause the water flow splashing due to the vibration of the water outlet pipeline.
Description
Technical Field
The utility model belongs to the technical field of water inlet valves, and particularly relates to a backflow-preventing air spacing structure of a water inlet valve.
Background
The water inlet valve of the toilet bowl is a device for controlling the automatic water inlet of the toilet bowl water tank, when the water level of the water tank is lower than a certain water level, the water inlet valve enters water and flows into the water tank until the water in the water tank rises to a certain water level, and the water inlet valve stops water. The water inlet channel and the water outlet channel of the traditional water inlet valve are directly connected, so that the water outlet is directly contacted with the water of the water tank, the risk of water backflow exists, and the water of the water pipe is polluted.
Chinese patent publication No. CN212375964U discloses a backflow-preventing side water inlet valve, which sets the water outlet of the water inlet valve above the water replenishing channel with a space therebetween, so as to keep the water outlet from directly contacting the highest water surface, so that the water in the water tank does not flow back into the pipeline, and thus the water source is not polluted. But this patent will be alone a water outlet pipe way tensile to the upper end of moisturizing pipeline and make water outlet channel take the shape of falling U, set up like this and can make water outlet pipe way receive the influence of rivers impulsive force for a long time and lead to focus offset, the structure is not firm enough, damages easily, and the water intaking valve still can vibrate when the feed-water tank moisturizing, leads to rivers to splash outward.
Disclosure of Invention
The utility model aims to provide a backflow-preventing air interval structure of a water inlet valve, which can effectively prevent water backflow of a water tank, is stable in structure and not easy to damage, and a water outlet pipeline cannot vibrate to cause water flow splashing.
To achieve the above object, the solution of the present utility model is: an anti-backflow air interval structure of a water inlet valve comprises a water inlet valve body and a water inlet pipe of a water supply tank; the water inlet valve body is fixed above the honeycomb duct, the lower part of the water inlet valve body is provided with a water passing pipeline, the left side of the upper part is provided with a water outlet pipeline, the right side of the upper part is provided with a support column, the right side of the water passing pipeline is provided with a water inlet, the left side is communicated with the water outlet pipeline, the top end of the water outlet pipeline transversely extends to cross over the upper part of the honeycomb duct and is connected with the support column, the transverse extension part of the water outlet pipeline is provided with a water outlet right above the honeycomb duct, and an air interval is arranged between the water outlet and the top end of the honeycomb duct.
Further, the top end of the water outlet pipeline transversely extends to cross over the upper part of the flow guide pipe and is connected with the top end of the supporting column to form an inverted U-shaped pipe body, a water outlet cavity protruding forwards is formed in the top of the inverted U-shaped pipe body, the water outlet cavity is communicated with the water outlet pipeline, and a water outlet is formed in the bottom wall of the water outlet cavity.
Further, an anti-siphon plug is arranged at the communication part of the water outlet cavity and the water outlet pipeline.
Further, the top of water outlet cavity is equipped with the opening, the top cap has been put to the opening upper cover, the evagination is equipped with the buckle on the lateral wall of top cap, be equipped with the bayonet socket on the lateral wall of water outlet cavity, top cap and water outlet cavity pass through buckle and bayonet socket lock joint to be fixed.
Further, the water inlet valve body is also provided with a pipe joint, the pipe joint is positioned under the water outlet, the outer side wall of the pipe joint is provided with a clamping buckle, the top end of the flow guide pipe is a water inlet end, the side wall of the water inlet end is provided with a clamping connector or a clamping groove, and the pipe joint is in clamping connection with the flow guide pipe through the clamping buckle and the clamping connector or the clamping groove.
Further, the water inlet end of the flow guide pipe is arranged to be an outer expansion section, the pipe joint is inserted into the outer expansion section to be buckled with the flow guide pipe, and a splash-proof net is arranged between the bottom end of the outer expansion section and the pipe joint.
Further, a back pressure valve is arranged at the communication part of the water passing pipeline and the water outlet pipeline, a float bowl is sleeved on the flow guide pipe, and the back pressure valve is connected with the float bowl.
Further, the backpressure valve includes stagnant water lid, stagnant water cushion, lifts the pole, stagnant water cushion sets up the intercommunication department at water pipeline and outlet conduit, stagnant water lid is put in the stagnant water cushion outside and is formed the backpressure chamber with between the stagnant water cushion, stagnant water is covered and is equipped with the pressure release hole, the one end of lifting the pole is equipped with the backpressure pad that is used for shutoff pressure release hole, the one end of lifting the pole rotates and sets up and cover at the stagnant water, and the other end is connected with the flotation pontoon.
Further, the water inlet on the right side of the water passing pipeline is externally connected with a water inlet pipeline.
After the scheme is adopted, the beneficial effects of the utility model are as follows:
the water outlet pipeline is arranged above the water passing pipeline, the support column is further arranged above the water outlet pipeline, the top end of the water outlet pipeline transversely extends to cross over the upper part of the guide pipe and is connected with the support column, the water outlet is arranged at the transversely extending part of the water outlet pipeline, the water outlet is positioned above the front side of the water passing pipeline and right above the guide pipe, the water outlet pipeline is respectively communicated with the water passing pipeline and the water outlet, water flows into the water outlet pipeline from the water inlet port in a roundabout way, an air interval communicated with external air is arranged between the water outlet and the water inlet end of the guide pipe, water in the water inlet valve body flows into the water tank through the guide pipe after flowing out of the water outlet, the water outlet is positioned at the highest position of the water inlet valve and is higher than the highest water level in the water tank, so that the water outlet is not contacted with the water in the water tank, and is directly contacted with the external air, the water outlet is separated from the water tank by the air, when a certain negative pressure phenomenon occurs, the water outlet is directly sucked into the air from the outside, the negative pressure is counteracted to the water in the water tank, and the water in the water tank is effective in the water tank, and the water backflow of the water tank is prevented; in addition, the water outlet is positioned between the water outlet pipeline and the support column, the water outlet pipeline and the support column have symmetrical supporting functions on two sides of the water outlet respectively for the two support parts, the structure is stable, when the water outlet is used for discharging water, the phenomenon of gravity center offset and vibration of the water outlet pipeline can not occur, water flow splashing can not be caused, and the water outlet pipeline is not easy to damage and long in service life.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic diagram of a second perspective structure of the present utility model;
FIG. 3 is a front view of the present utility model;
FIG. 4 is a cross-sectional view of the present utility model;
fig. 5 is an exploded view of the present utility model.
Description of the reference numerals:
1. a water inlet valve body; 11. a water passing pipe; 12. a water outlet pipe; 13. a support column; 14. a water outlet; 15. a water outlet cavity; 151. an anti-siphon plug; 152. a top cover; 16. a water inlet; 17. a pipe joint; 171. a clamping buckle; 18. a nut; 2. a flow guiding pipe; 21. a card interface; 22. an outer expansion section; 3. a back pressure valve; 31. a water stop cover; 311. a pressure relief hole; 32. a water stop rubber cushion; 33. lifting a rod; 34. a back pressure pad; 4. a pontoon; 41. a screw; 42. screw rod buckle; 5. a splash-proof net; 6. a water inlet joint; 61. and (3) a filter screen.
Detailed Description
The utility model will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a backflow-preventing air interval structure of a water inlet valve, which is shown in figure 1 and comprises a water inlet valve body 1 and a flow guide pipe 2 for feeding water into a water tank.
As shown in fig. 1 to 3, the water inlet valve body 1 is fixed above the flow guide pipe 2, the lower part of the water inlet valve body 1 is transversely provided with a water passing pipeline 11, the left side of the upper part is vertically provided with a water outlet pipeline 12, the right side of the upper part is vertically provided with a support column 13, the right side of the water passing pipeline 11 is provided with a water inlet 16, the left side is communicated with the water outlet pipeline 12, the top end of the water outlet pipeline 12 transversely extends across the upper part of the flow guide pipe 2 and is connected with the top end of the support column 13 to form an inverted U-shaped pipe body, namely, the transversely extending part of the water outlet pipeline 12 is provided with a water outlet 14, the water outlet 14 is positioned at the front side of the water passing pipeline 11 and right above the flow guide pipe 2, two ends of the water outlet pipeline 12 are respectively communicated with the water passing pipeline 11 and the water outlet 14, and no water flow channel is arranged in the support column 13 and is not communicated with the water passing pipeline 11 and the water outlet 14, and is only used as a support piece.
As shown in fig. 4, water flows into the water passing pipeline 11 from the water inlet 16 leftwards, flows into the water outlet pipeline 12 rightwards in a detouring way, flows upwards to the upper part of the flow guiding pipe 2 along the water outlet pipeline 12 and flows out from the water outlet 14, an air interval with the length of D is formed between the water outlet 14 and the water inlet end of the flow guiding pipe 2, the air interval is communicated with the outside air, water in the water inlet valve body 1 flows into the water tank through the flow guiding pipe 2 after flowing out from the water outlet 14 and flows into the water tank in a suspended flowing state when flowing through the air interval; the water outlet 14 is positioned at the highest position of the water inlet valve and is higher than the highest water level in the water tank, so that the water outlet 14 is not contacted with water in the water tank, the water outlet 14 is directly contacted with the outside air, the water outlet 14 is separated from the water in the water tank by the air, when a certain negative pressure phenomenon occurs in the water outlet pipeline 12, the water outlet 12 directly sucks the air from the outside, and the suction force of the negative pressure on the water in the water tank is counteracted, so that an anti-siphon effect is achieved; in addition, the water outlet 14 is positioned between the water outlet pipeline 12 and the supporting columns 13, the water outlet pipeline 12 and the supporting columns 13 are two supporting pieces which respectively play a symmetrical supporting role at two sides of the water outlet 14, the structure is stable, when the water outlet 14 is used for discharging water, the phenomenon that the gravity center of the water outlet pipeline 12 is offset and vibrates can not occur, water flow splashing can not be caused, the water outlet pipeline 12 is not easy to damage, and the service life is long.
As shown in fig. 4 and 5, the top of the inverted U-shaped pipe body, that is, the transversely extending part of the water outlet pipe 12, is provided with a water outlet cavity 15 protruding forward, the water outlet cavity 15 is communicated with the water outlet pipe 12, the bottom wall of the water outlet cavity 15 is provided with a water outlet 14, so that the water outlet 14 is positioned at the front side of the water outlet pipe 11, the flow guide pipe 2 is correspondingly arranged at the front side of the water outlet pipe 11, so that the air space between the water outlet 14 and the flow guide pipe 2 is staggered with the water outlet pipe 11, the water does not contact with the water outlet pipe 11 when flowing through the air space, the structural design is ingenious, the space layout is reasonably utilized, the water outlet pipe 12 is arranged above the water outlet pipe 11, meanwhile, a support column 13 is arranged at one side of the water outlet pipe 12, and a water outlet 14 staggered with the water outlet pipe 11 is arranged between the support column 13, so that the water outlet 14 is lifted and the flow guide pipe 2 is formed at the front and back, the purpose of air space is achieved, and the water outlet pipe 12 can be prevented from flowing back, and the water outlet pipe 12 can be reinforced.
As shown in fig. 4 and 5, an anti-siphon plug 151 is disposed at the connection position between the water outlet chamber 15 and the water outlet pipe, so as to prevent water in the water outlet chamber 15 from flowing back into the water outlet pipe 12. For convenience in replacing the anti-siphon plug 151, an opening can be formed in the top of the water outlet cavity 15, a top cover 152 is covered on the opening, a buckle is arranged on the side wall of the top cover 152, a bayonet is arranged on the side wall of the water outlet cavity 15, and when the top cover 152 is covered on the water outlet cavity 15, the top cover is fastened and fixed with the water outlet cavity 15 through the buckle and the bayonet, so that the anti-siphon plug 151 is fast and convenient to assemble and disassemble, and the water outlet pipeline 12 is convenient to maintain and the anti-siphon plug 151 is replaced.
As shown in fig. 5, the water inlet valve body 1 is further provided with a pipe joint 17, the pipe joint 17 is located under the water outlet 14, a clamping buckle 171 is arranged on the outer side wall of the pipe joint 17, the top end of the flow guiding pipe 2 is a water inlet end, a clamping port 21 or a clamping groove is formed in the side wall of the water inlet end, and the pipe joint 17 is buckled with the flow guiding pipe 2 through the clamping buckle 171 and the clamping port 21 or the clamping groove. In this embodiment, the card interface 21 is preferable, and the connection is more secure. In order to facilitate the buckling connection of the pipe joint 17 and the flow guide pipe 2, a foolproof structure can be further arranged on the pipe joint 17 and the flow guide pipe 2, namely, a positioning convex rib is convexly arranged on the outer side wall of the pipe joint 17, a positioning notch matched with the positioning convex rib is arranged at the top end of the flow guide pipe 2, and after the positioning notch on the flow guide pipe 2 is aligned with the positioning convex rib on the pipe joint 17, the clamping buckle 171 can be aligned with the clamping interface 21, so that the connection is convenient and quick.
As a preferred embodiment, the water inlet end of the flow guiding pipe 2 is arranged as an outer expansion section 22, the pipe joint 17 is inserted into the outer expansion section 22 to be fastened with the flow guiding pipe 2, a splash-proof net 5 can be arranged in the outer expansion section 22 to prevent water from impacting on the water surface at a high speed at a high water level to cause water flow to surge or splash everywhere, and the splash-proof net 5 can be arranged between the bottom end of the outer expansion section 22 and the pipe joint 17 to be clamped and fixed by the pipe joint 17 and the bottom end of the outer expansion section 22.
As the preferred embodiment, the water inlet 16 at one side of the water passing pipe 11 is connected with a water inlet joint 6 through a nut 18, the water inlet joint 6 can be externally connected with a water inlet pipe, and the water inlet joint 6 is provided with a thread section, so that the connection is convenient and quick. In addition, a filter screen 61 may be provided in the water inlet joint 6 to filter impurities in water, and a restrictor may be provided in the water inlet joint 6 to limit the water flow rate.
As shown in fig. 2 and fig. 4, the back pressure valve 3 is disposed at the connection position between the water passing pipe 11 and the water outlet pipe 12, the back pressure valve 3 includes a water stopping cover 31, a water stopping rubber pad 32, and a lifting rod 33, the water stopping rubber pad 32 is disposed at the connection position between the water passing pipe 11 and the water outlet pipe 12, the water stopping cover 31 is disposed on the outer side of the water stopping rubber pad 32 and forms a back pressure cavity with the water stopping rubber pad 32, a pressure release hole 311 is disposed on the water stopping cover 31, a back pressure pad 34 for blocking the pressure release hole 311 is disposed at one end of the lifting rod 33, and one end of the lifting rod 33 is rotatably disposed on the water stopping cover 31. The float bowl 4 capable of sliding up and down along the guide pipe 2 is sleeved on the guide pipe 2, a screw 41 is arranged on the float bowl 4, a screw buckle 42 is arranged on the screw 41, the other end of the lifting rod 33 is buckled with the screw buckle 42, and the float bowl 4 moves up and down to drive one end of the lifting rod 33 to rotate so that the back pressure pad 34 is blocked and the pressure relief hole 311 is opened.
The specific implementation process of the utility model is as follows: when the water stop rubber cushion 32 does not block the pressure relief hole 311 to enable the pressure relief hole 311 to be in an open state, a back pressure cavity between the water stop rubber cushion 32 and the water stop cover 31 cannot maintain high pressure, the water stop rubber cushion 32 is acted by water flow impulse to open a communication part between the water flow pipeline 11 and the water outlet pipeline 12, water flows into the water outlet pipeline 12 from the water flow pipeline 11 in a roundabout way manner, flows into the water outlet cavity 15 upwards, flows out from the water outlet 14, flows into the guide pipe 2 under the action of self gravitational potential energy, flows into a water tank along the guide pipe 2, and is fed into a water tank; when the water level in the water tank is increased to enable the water level to rise, the pontoon 4 floats and drives the lifting rod 33 to lift upwards through the screw 41, the other end of the lifting rod 33 rotates towards the water stopping cover 31 to enable the water stopping rubber cushion 32 to seal the pressure relief hole 311, the pressure in the back pressure cavity can be rapidly increased, the water stopping rubber cushion 32 is pushed by pressure to seal the communicating position between the water passing pipeline 11 and the water outlet pipeline 12, and the water inlet valve stops water inlet.
The above embodiments are only preferred embodiments of the present utility model, and are not limited to the present utility model, and all equivalent changes made according to the design key of the present utility model fall within the protection scope of the present utility model.
Claims (9)
1. An anti-backflow air spacing structure of a water inlet valve is characterized in that: the diversion pipe comprises a water inlet valve body and a water inlet of a water supply tank; the water inlet valve body is fixed above the honeycomb duct, the lower part of the water inlet valve body is provided with a water passing pipeline, the left side of the upper part is provided with a water outlet pipeline, the right side of the upper part is provided with a support column, the right side of the water passing pipeline is provided with a water inlet, the left side is communicated with the water outlet pipeline, the top end of the water outlet pipeline transversely extends to cross over the upper part of the honeycomb duct and is connected with the support column, the transverse extension part of the water outlet pipeline is provided with a water outlet right above the honeycomb duct, and an air interval is arranged between the water outlet and the top end of the honeycomb duct.
2. The backflow prevention air spacer structure of a water inlet valve as set forth in claim 1, wherein: the top of the water outlet pipeline transversely extends to cross over the upper part of the flow guide pipe and is connected with the top of the supporting column to form an inverted U-shaped pipe body, a water outlet cavity protruding forwards is formed in the top of the inverted U-shaped pipe body, the water outlet cavity is communicated with the water outlet pipeline, and a water outlet is formed in the bottom wall of the water outlet cavity.
3. The backflow prevention air spacing structure of a water inlet valve as set forth in claim 2, wherein: and an anti-siphon plug is arranged at the communication part of the water outlet cavity and the water outlet pipeline.
4. A backflow prevention air spacing structure for a water inlet valve as set forth in claim 2 or 3, wherein: the top of play water chamber is equipped with the opening, the top cap has been put to the opening upper cover, the evagination is equipped with the buckle on the lateral wall of top cap, be equipped with the bayonet socket on the lateral wall of play water chamber, the top cap passes through buckle and bayonet socket lock joint with play water chamber and is fixed.
5. The backflow prevention air spacer structure of a water inlet valve as set forth in claim 1, wherein: the water inlet valve is characterized in that the water inlet valve body is also provided with a pipe joint, the pipe joint is positioned right below the water outlet, the outer side wall of the pipe joint is provided with a clamping buckle, the top end of the flow guide pipe is a water inlet end, the side wall of the water inlet end is provided with a clamping connector or a clamping groove, and the pipe joint is in buckling connection with the flow guide pipe through the clamping buckle and the clamping connector or the clamping groove.
6. The backflow prevention air spacing structure of a water inlet valve as recited in claim 5, wherein: the water inlet end of the flow guide pipe is arranged to be an outer expansion section, the pipe joint is inserted into the outer expansion section to be buckled with the flow guide pipe, and a splash-proof net is arranged between the bottom end of the outer expansion section and the pipe joint.
7. The backflow prevention air spacer structure of a water inlet valve as set forth in claim 1, wherein: the back pressure valve is arranged at the communication part of the water passing pipeline and the water outlet pipeline, the float bowl is sleeved on the flow guide pipe, and the back pressure valve is connected with the float bowl.
8. The backflow prevention air spacing structure of a fill valve as set forth in claim 7, wherein: the back pressure valve comprises a water stopping cover, a water stopping rubber cushion and a lifting rod, wherein the water stopping rubber cushion is arranged at the communicating part of a water passing pipeline and a water outlet pipeline, a back pressure cavity is formed between the water stopping cover and the water stopping rubber cushion outside the water stopping rubber cushion, a pressure relief hole is formed in the water stopping cover, a back pressure pad for blocking the pressure relief hole is arranged at one end of the lifting rod, the water stopping cover is arranged at one end of the lifting rod in a rotating mode, and the other end of the lifting rod is connected with a floating barrel.
9. The backflow prevention air spacer structure of a water inlet valve as set forth in claim 1, wherein: the water inlet on the right side of the water passing pipeline is externally connected with a water inlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320041847.9U CN219491191U (en) | 2023-01-06 | 2023-01-06 | Backflow-preventing air spacing structure of water inlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320041847.9U CN219491191U (en) | 2023-01-06 | 2023-01-06 | Backflow-preventing air spacing structure of water inlet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219491191U true CN219491191U (en) | 2023-08-08 |
Family
ID=87505638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320041847.9U Active CN219491191U (en) | 2023-01-06 | 2023-01-06 | Backflow-preventing air spacing structure of water inlet valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219491191U (en) |
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2023
- 2023-01-06 CN CN202320041847.9U patent/CN219491191U/en active Active
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