CN210288565U

CN210288565U - Anti-siphon device

Info

Publication number: CN210288565U
Application number: CN201920892272.5U
Authority: CN
Inventors: 陈辉程; 彭海松; 陈小娟
Original assignee: Xiamen Jiapule Electronic Technology Co ltd
Current assignee: Xiamen Jiapule Electronic Technology Co ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-04-10
Anticipated expiration: 2029-06-14

Abstract

An object of the utility model is to overcome the above-mentioned shortcoming of current vacuum breaker, provide a water normal anti-siphon device. The anti-siphon device comprises a shell and a sealing gasket, wherein a water inlet, a first water outlet and a second water outlet are sequentially arranged on the shell according to the water flow direction, an air inlet is further formed in the shell, the sealing gasket is movably arranged between the first water outlet and the air inlet, and at least one notch is formed in the edge of the first water outlet. When intaking, rivers pass through water inlet, first delivery port, sealed lower surface, the second delivery port in proper order, even first delivery port edge and sealed lower surface of packing do not use for a long time after leading to water and produce the incrustation scale and adhesion, the breach at first delivery port edge does not take place the adhesion because do not contact with sealed the pad, rivers can follow thereby the breach flows out to break sealed the pad, makes the water normal.

Description

Anti-siphon device

Technical Field

The utility model belongs to the bathroom field, concretely relates to prevent siphon device.

Background

In a bathroom product, a tap water supply network is frequently cut off water, a high-rise water pipe can generate negative pressure to form siphon to cause sewage backflow, and in order to avoid the situation, the invention discloses CN108869812A to provide a vacuum breaker for preventing negative pressure siphon, which comprises an inner cavity formed by enclosing an upper cover and a lower cover, an air inlet, a water inlet and a water outlet communicated with the inner cavity, wherein the inner cavity is provided with a sealing plug, a flow guide pipe and a normally closed duckbill valve.

However, the above vacuum breaker has a problem: the sealing plug and the flow guide pipe are both made of elastic materials with good sealing performance, water is generally required to be introduced for function test after the vacuum breaker is manufactured, the sealing plug falls on the flow guide pipe under the action of gravity, and in the long-time transportation and storage processes, water remained after the vacuum breaker is tested can form scale between the sealing plug and the flow guide pipe to adhere the sealing plug and the flow guide pipe, so that the normal water passing performance of the vacuum breaker is influenced.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned shortcoming of current vacuum breaker, provide a water normal anti-siphon device.

The utility model discloses the technical scheme who adopts is an anti-siphon device, including shell and sealed pad, be equipped with water inlet, first delivery port and second delivery port in proper order according to the rivers direction on the shell, still be equipped with the air inlet on the shell, sealed movably setting in first delivery port top of pad, first delivery port edge is equipped with at least one breach.

When intaking, rivers pass through water inlet, first delivery port, sealed lower surface, the second delivery port in proper order, even first delivery port edge and sealed lower surface of packing do not use for a long time after leading to water and produce the incrustation scale and adhesion, the breach at first delivery port edge does not take place the adhesion because do not contact with sealed the pad, rivers can follow thereby the breach flows out to break sealed the pad, makes the water normal.

Preferably, the lower surface of the gasket is a roughened sparking surface. After the anti-siphon device is filled with water, the contact area between the sealing gasket and the edge of the first water outlet can be reduced by the rough spark surface, the formation of water scale is reduced, and the sealing gasket can be flushed away by only smaller water pressure at the water inlet end.

Preferably, the water inlet is provided with a check valve, and when the water inlet end generates negative pressure, water at the water using terminal can be effectively prevented from generating reverse flow to enter the water supply pipeline.

Preferably, the check valve be the duckbilled valve, the duckbilled valve has one-way check effect, when intaking and holding the production negative pressure, the duckbilled end collapses because the negative pressure effect is out of shape, the duckbilled valve is stopped up, has reduced the air input of the balanced negative pressure of air inlet greatly, can make overall structure smaller and more exquisite.

Preferably, the housing is composed of a body and an upper cover, and a sealing ring is arranged between the body and the upper cover.

The utility model discloses set up at least one breach at first delivery port edge, the rivers of being convenient for are washed open sealed the pad, prevent to influence and prevent the normal water function of siphon device. The lower surface of the sealing gasket is designed into a rough spark surface, so that the formation amount of water scale is reduced, and the sealing gasket can be flushed by smaller water pressure.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an explosion diagram of the present invention.

Fig. 3 is a perspective view of the body.

Fig. 4 is a schematic view of the water inlet state of the present invention.

Fig. 5 is a schematic view of the anti-siphon state of the present invention.

Wherein: the device comprises a body 1, a water inlet 11, a first water outlet 12, a gap 121, a first water passing cavity 13, a second water passing cavity 14, a water inlet channel 15, an upper cover 2, a gas inlet 21, a gas inlet channel 22, a second water outlet 23, a water outlet channel 24, a sealing gasket 3, a groove 31, a sealing ring 4 and a duckbill valve 5.

Detailed Description

The embodiments illustrated herein will enable those skilled in the art to more fully understand the present invention, without limiting it in any way, when the present invention is described in detail below with reference to the accompanying drawings.

As shown in figures 1 to 5, the anti-siphon device comprises a shell and a sealing gasket 3, wherein the shell is composed of a body 1 and an upper cover 2, the sealing gasket 3 is arranged between the body 1 and the upper cover 2, and a circular sealing ring 4 is arranged between the body 1 and the upper cover 2 to prevent water flow from overflowing from a seam between the body 1 and the upper cover. A water inlet 11 and a first water outlet 12 are arranged on the body 1, a first water passing cavity 13 is arranged between the water inlet 11 and the first water outlet 12, and a second water passing cavity 14 is formed by the first water outlet 12 and the cover body 2. The upper cover 2 is provided with an air inlet 21, an air inlet channel 22, a second water outlet 23 and a water outlet channel 24, the air inlet channel 22 is connected with the air inlet 21 and the second water passing cavity 14, and the water outlet channel 24 is connected with the second water passing cavity 14 and the second water outlet 23. The sealing gasket 3 is arranged in the second water passing cavity 14, the upper part of the sealing gasket extends into the air inlet channel 22, and under the action of gravity and water pressure, the sealing gasket 3 can move up and down in the second water passing cavity 14 and the air inlet channel 22 and switch between plugging and opening the first water outlet 12. When the water inlet end generates negative pressure, the sealing gasket 3 falls under the action of gravity to block the first water outlet 12, the air inlet 21 and the air inlet channel 22 suck air, the negative pressure is balanced, and siphon is prevented from being formed on the water using end.

A non-return valve is also arranged in the water inlet channel 15 between the water inlet 11 and the first water passing cavity 13, and the specific structure of the non-return valve is not limited, and as a preferred option, the non-return valve can be a duck bill valve 5 in particular. Duckbill valve 5 has one-way check effect, and when intaking and holding production negative pressure, the duckbill end collapses because negative pressure effect warp, and duckbill valve 5 is plugged up, has reduced the air input of the balanced negative pressure of air inlet greatly, can make overall structure smaller and more exquisite.

The lower surface of the sealing gasket 3 is provided with a circular groove 31, the surface of the groove 31 is a rough spark surface, the contact area between the edge of the first water outlet 12 and the sealing gasket 3 is reduced, and the scale formed between the edge of the first water outlet 12 and the sealing gasket 3 after the anti-siphon device is filled with water is reduced.

As shown in fig. 3, at least one notch 121 is formed on the edge of the first water outlet 12, even if the edge of the first water outlet 12 and the lower surface of the gasket 3 are adhered due to scale produced after water is supplied for a long time, the notch 121 on the edge of the first water outlet 12 is not adhered due to non-contact with the gasket 3, and water can flow out from the notch 121 to flush the gasket 3, so that the water is normally supplied. The number of said notches 121 is at least one, the depth, width and number of which are such that there is sufficient clearance between the gasket 3 and the first outlet edge to prevent adhesion of scale, and that the flow of water can flush the gasket 3 through said clearance.

Anti-siphon principle: as shown in fig. 4, when the water pressure of the tap water pipe at the front end of the water inlet 11 is normal, water flows in from the water inlet 11, flows through the duckbill valve 5, flows out from the first water outlet 12 below the rubber gasket 3, and the water pressure acts on the rubber gasket 3, so that the rubber gasket 3 moves upwards to block the air inlet 21, and then flows out from the second water outlet 23. As shown in fig. 5, when negative pressure is generated at the front end of the water inlet 11, the rubber pad 3 falls, the first water outlet 12 is not completely sealed by the rubber pad 3 at this time, the air inlet 21 is opened, so that the pressure of the second water passing cavity 14 and the rear end thereof is equal to the atmospheric pressure, and meanwhile, due to the existence of the notch 121, the air sucked by the air inlet 21 balances the negative pressure at the front end of the first water outlet 12 to a certain extent, so as to prevent the second water outlet 23 from sucking water from the rear end.

Above embodiment only is for explaining the utility model discloses a technical thought can not be injectd with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any improvement of doing on technical scheme basis and equal replacement all fall into within the protection scope of the utility model.

Claims

1. The utility model provides an anti-siphon device, includes that shell and sealed pad are equipped with water inlet, first delivery port and second delivery port in proper order according to the rivers direction on the shell, still are equipped with the air inlet on the shell, and sealed movably setting of pad is between first delivery port and air inlet, its characterized in that: the edge of the first water outlet is provided with at least one notch.

2. An anti-siphon device, according to claim 1, characterized in that: the lower surface of the gasket is a rough sparking surface.

3. An anti-siphon device, according to claim 1, characterized in that: and a check valve is arranged at the water inlet.

4. An anti-siphon device, according to claim 3, characterized in that: the check valve is a duckbill valve.

5. An anti-siphon device, according to claim 1, characterized in that: the shell consists of a body and an upper cover, and a sealing ring is arranged between the body and the upper cover.