CN114809215A - Anti-siphon flushing valve - Google Patents

Abstract

The invention provides an anti-siphon flush valve which comprises a valve body and a siphon membrane, wherein the valve body is provided with a water inlet channel, a water outlet channel and an air suction channel, the water inlet channel is communicated with the water outlet channel through a water passing port, the water outlet channel is communicated with the air suction channel through an air passing port, a water stopping structure is arranged on the water inlet channel, and the siphon membrane is arranged between the water passing port and the air passing port. Therefore, the water stopping structure at the front end can be effectively protected when water flow is cut off.

Description

Anti-siphon flushing valve

Technical Field

The invention relates to the field of flush valves, in particular to an anti-siphon flush valve.

Background

The flush valve is widely applied to the toilet bowl and used for controlling the flushing of the toilet bowl. The prior flush valve is generally provided with an anti-siphon structure to prevent sewage backflow caused by siphon. The existing anti-siphon structures are all independently arranged in the water outlet channel, and the plugging between the water inlet channel and the water outlet channel is realized only through a conventional water stopping structure (such as a water stopping assembly). The water stopping structure can not be effectively protected when the flushing water flow is stopped, and although the anti-siphon structure is additionally arranged, the possibility of impacting the water stopping structure still exists, so that the water stopping structure is easy to dislocate and even deform to lose the water stopping function.

Disclosure of Invention

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide an anti-siphon flush valve which can effectively protect a water stop structure at a front end when water flow is stopped.

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the utility model provides an anti-siphon's flashing valve, the valve body has inhalant canal, exhalant canal and suction channel, realize the intercommunication through crossing the mouth of a river between inhalant canal and the exhalant canal, realize the intercommunication through crossing the mouth of a river between exhalant canal and the suction channel, the last stagnant water structure that is provided with of inhalant canal, the siphon diaphragm sets up between crossing mouth of a river and crossing the mouth of a river.

Furthermore, the water inlet channel is located in the middle of the water inlet channel, the water outlet channel is located on the periphery of the water inlet channel, and the air suction channel is located on the periphery of the water outlet channel.

Furthermore, the valve body comprises a valve shell, a water inlet pipe fitting and an outer ring piece, the valve shell is provided with an installation cavity, a water inlet and a water outlet which are communicated with the installation cavity, the water inlet pipe fitting, the siphon diaphragm and the outer ring piece are all assembled in the installation cavity, the inner cavity of the water inlet pipe fitting is a water inlet channel and is communicated with the water inlet, the outer ring piece is sleeved outside the water inlet pipe fitting and is enclosed with the water inlet pipe fitting to form the water outlet channel, the water outlet channel is communicated with the water outlet, and the water passing port is arranged on the water inlet pipe fitting; the outer ring piece is assembled on the inner wall of the valve shell in a sealing mode and jointly encloses to form the air suction channel, the air passing opening is formed in the outer ring piece, the valve shell is provided with an air vent communicated with the air suction channel, and the siphon membrane is arranged between the water inlet pipe piece and the outer ring piece.

Furthermore, the siphon membrane is an annular membrane, and a plurality of water outlets are uniformly distributed on the outer peripheral wall of the water inlet pipe fitting; the air passing holes are also provided with a plurality of air passing holes and are uniformly distributed on the peripheral wall of the outer ring piece.

Furthermore, two installation cavities of the valve shell are arranged, and each installation cavity is provided with a water inlet channel, a water outlet channel and a gas suction channel; the valve shell is provided with a water inlet and two water outlets, the water inlet is simultaneously communicated with two water inlet channels, the two water outlet channels are communicated with different water outlets, and a one-inlet two-outlet water outlet structure is formed.

Furthermore, the bottoms of the two mounting cavities are respectively provided with a water passing opening communicated with the water inlet, a separating bulge for separating the water passing opening from the water outlet is arranged in each mounting cavity, the mounting cavities are also provided with a water dividing piece, each water dividing piece is provided with a central through hole and a supporting arm extending outwards in the radial direction, the water dividing pieces are in sealing fit with the separating bulges so as to enable the central through holes to be communicated with the water inlets, and the water inlet pipe fittings are assembled in the central through holes of the water dividing pieces in a sealing mode; the supporting arm of the water diversion piece is abutted against the inner wall of the mounting cavity; the water outlet channel is communicated with the water outlet through a gap between the water separating piece and the inner wall of the mounting cavity.

Furthermore, the two air suction channels are simultaneously communicated with one air vent.

Furthermore, the inner wall of the installation cavity is provided with a collision step, the upper end and the lower end of the outer ring piece are hermetically attached to the inner wall of the installation cavity, and the upper end of the outer ring piece abuts against the collision step to realize limiting; the upper end of the water inlet pipe fitting is in sealing butt joint with the outer ring piece, and the lower end of the water inlet pipe fitting is in sealing butt joint with the water dividing piece connected with the water inlet.

Further, the valve body still includes valve gap and relief valve, the valve gap lid fits on valve housing, stagnant water structure is the stagnant water subassembly, stagnant water subassembly is connected and is used for the shutoff between valve gap and the water pipe fitting intake passage, stagnant water subassembly and valve gap enclose to close and form the back pressure chamber, the pressure release passageway in intercommunication back pressure chamber is seted up to the valve gap, the relief valve assembles on the valve gap and controls the logical/disconnected of pressure release passageway.

Further, the pressure relief valve comprises an electric pressure relief valve and a manual pressure relief valve, the pressure relief channel is provided with a first pressure relief water path and a second pressure relief water path which are connected in parallel, the electric pressure relief valve controls the connection/disconnection of the first pressure relief water path, and the manual pressure relief valve controls the connection/disconnection of the second pressure relief water path.

Further, the manual pressure relief valve comprises a first part and a second part, the first part is assembled on a second pressure relief water path to block the second pressure relief water path, and the first part is provided with a first magnet; the second part can be movably arranged to be close to or far away from the first part, the second part is provided with a second magnet, and when the second part is close to the first part, the first magnet and the second magnet are attracted to drive the first part to move, so that the second pressure relief water path is opened.

Through the technical scheme provided by the invention, the method has the following beneficial effects:

when normally flushing, the rivers of inlet channel flow in outlet channel through the mouth of a river, realize flushing, and the in-process, the rivers impact siphon diaphragm that flow in through the mouth of a river, make siphon diaphragm deformation and butt on crossing the gas port to realize the shutoff and cross the gas port.

When stagnant water structure shutoff inhalant canal, rivers are by, and exhalant canal produces the negative pressure, and at this moment, inhalant canal's pressure is greater than exhalant canal to strike siphon diaphragm and warp and open the gas port, inhalant canal's air current flows into exhalant canal from the gas port, realizes pressurizeing to exhalant canal, thereby effectively realizes preventing the siphon effect. In-process, the air current strikes the siphon diaphragm and warp, can make siphon diaphragm butt on crossing the mouth of a river and the mouth of a river is crossed in the shutoff, so, can block out the water of water passageway and follow the mouth of a river backward flow and strike the stagnant water structure of front end, protection stagnant water structure that can be fine.

Drawings

FIG. 1 is a perspective view of an embodiment of an anti-siphon flush valve;

FIG. 2 is a cross-sectional view of an embodiment of an anti-siphon flush valve;

FIG. 3 is an enlarged schematic view of area A of FIG. 2;

FIG. 4 is a partially exploded view of an embodiment of the anti-siphon flush valve;

FIG. 5 is a sectional view showing the structure of a valve housing in the embodiment;

FIG. 6 is an exploded view of the mating structure of the inlet fitting, siphon membrane and outer ring of the embodiment;

FIG. 7 is a schematic structural view of a water inlet pipe in the embodiment;

FIG. 8 is a schematic structural view of a siphon membrane in an embodiment;

FIG. 9 is a schematic structural view of an outer ring member in the embodiment;

fig. 10 is a schematic structural view of the water diversion member in the embodiment.

Detailed Description

To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 10, this embodiment provides an anti-siphon flush valve, including valve body and siphon diaphragm 20, the valve body has inhalant canal 101, exhalant canal 102 and inspiratory channel 103, realize the intercommunication through crossing water gap 121 between inhalant canal 101 and the exhalant canal 102, realize the intercommunication through crossing gas port 131 between exhalant canal 102 and the inspiratory channel 103, be provided with water stopping structure 15 on the inhalant canal 101, come the shutoff or open the flowing water of inhalant canal 101 through water stopping structure 15, siphon diaphragm 20 sets up between crossing water gap 121 and gas port 131.

When stagnant water structure 15 opened inhalant canal 101, inhalant canal 101's rivers flow into exhalant canal 102 through mouth of a river 121, realize washing by water, and in-process, the rivers that flow in through mouth of a river 121 impact siphon diaphragm 20, make siphon diaphragm 20 warp and butt on air-passing opening 131 to realize the shutoff air-passing opening 131.

When the water stopping structure 15 blocks the water inlet channel 101, the water flow is stopped, the water outlet channel 102 generates negative pressure, at this time, the pressure of the air suction channel 103 is greater than that of the water outlet channel 102, the air flow in the air suction channel 103 impacts the siphon membrane 20 to deform and open the air passing hole 131, the air flow of the air suction channel 103 flows into the water outlet channel 102 from the air passing hole 131, the water outlet channel 102 is pressurized, and therefore the anti-siphon effect is effectively achieved. In the process, the airflow impacts the siphon membrane 20 to deform, so that the siphon membrane 20 is abutted against the water passing port 121 to close the water passing port 121, thus water in the water outlet channel 102 can be prevented from flowing back from the water passing port 121 to impact the water stopping structure 15 at the front end, and the water stopping structure 15 can be well protected.

Further, in this embodiment, the water inlet channel 101 is located at the middle position, the water outlet channel 102 is located at the periphery of the water inlet channel 101, and the air suction channel 103 is located at the periphery of the water outlet channel 102. So set up, can be with inhalant canal 101, exhalant canal 102 and intake passage 103 overall arrangement in same cavity, compare in the structure of inhalant canal 101 and exhalant canal 102 overall arrangement in the pipeline intracavity of difference among the prior art, the structure of the flashing valve of this application is more compact, the volume that can very big reduction this flashing valve.

Specifically, one preferable specific structure for realizing the layout is as follows: the valve body comprises a valve shell 11, a water inlet pipe fitting 12 and an outer ring piece 13, wherein the valve shell 11 is provided with a mounting cavity 111 and a water inlet 112 and a water outlet 113 which are communicated with the mounting cavity 111, the water inlet pipe fitting 12, the siphon membrane 20 and the outer ring piece 13 are all assembled in the mounting cavity 111, and an inner cavity of the water inlet pipe fitting 12 is a water inlet channel 101 and is communicated with the water inlet 112. The outer ring member 13 is sleeved outside the water inlet pipe member 12 and forms the water outlet passage 102 by enclosing with the water inlet pipe member 12, the water outlet passage 102 is communicated with the water outlet 113, and the water outlet 121 is opened on the water inlet pipe member 12. The outer ring member 13 is hermetically assembled on the inner wall of the valve housing 11 and jointly encloses to form the air suction channel 103, the air vent 131 is opened on the outer ring member 13, the valve housing 11 is opened with an air vent 114 communicated with the air suction channel 103, and the siphon membrane 20 is arranged between the water inlet pipe member 12 and the outer ring member 13. Thus, the layout of the water inlet channel 101, the water outlet channel 102 and the air suction channel 103 is realized through the matching of the water inlet pipe fitting 12 and the outer ring fitting 13, and the structure is simple.

During flushing, water flows into the water inlet pipe 12 from the water inlet 112, and then flows out to the water outlet channel 102 from the water passing opening 121 of the water inlet pipe 12, and in the process of flowing out from the water passing opening 121, the water flow impacts the siphon membrane 20 outwards, so that the siphon membrane 20 deforms outwards to block the air passing opening 131 on the outer side. When the water flow is stopped, the air flow in the air suction channel 103 impacts the siphon membrane 20 inwards, so that the siphon membrane 20 deforms inwards to close the water passing opening 121, and the air flow flows into the water outlet channel 102 from the air passing opening 131.

More specifically, the plurality of water outlets 121 are uniformly distributed on the outer circumferential wall of the water inlet pipe 12; the air vents 131 are also provided with a plurality of air vents and are uniformly distributed on the outer circumferential wall of the outer ring member 13, and the siphon membrane 20 is an annular membrane. Thus, when the water is flushed, the water flowing out from the water inlet channel 101 is more uniform, and the water passing area is increased to the maximum extent, so that the water flow is increased. Similarly, the air passing areas of the air passing holes 131 are increased, so that more air flows can enter the water outlet channel 102 instantly, the air flows are more sufficient, and the anti-siphon effect is better.

In this embodiment, two installation cavities 111 of the valve housing 11 are provided, and each installation cavity 111 is provided with a water inlet channel 101, a water outlet channel 102 and a suction channel 103; the valve housing 11 is provided with a water inlet 112 and two water outlets 113, the water inlet 112 is simultaneously communicated with the two water inlet channels 101, and the two water outlet channels 102 are communicated with different water outlets 113, so as to form a one-inlet two-outlet water outlet structure. So set up, valve housing 11 only needs two installation cavities 111 can realize the play water structure of one income two plays, compares in adopting the structure of two play water chambeies of a intake antrum intercommunication among the prior art, can reduce a cavity structures, has obviously reduced whole volume. Furthermore, the two air suction channels 103 are simultaneously communicated with one air vent 114, so that the air flow injection of the two water outlet channels 102 can be realized by adopting one air vent 114, and the structure is simple.

Specifically, the bottoms of the two mounting cavities 111 are both provided with a water passing opening 117 communicated with the water inlet 112, a separating protrusion 116 for separating the water passing opening 117 and the water outlet 113 is arranged in the mounting cavity 111, specifically, the separating protrusion 116 is in a cylindrical structure, so that the water passing opening 117 is enclosed, and the water outlet 113 is located outside the separating protrusion 116. The mounting cavity 111 is further provided with a water diversion member 14, the water diversion member 14 is provided with a central through hole 141 and a supporting arm 142 extending radially outwards, the water diversion member 14 is in sealing fit with the separation bulge 116, so that the central through hole 141 is communicated with the water inlet 112, and the water inlet pipe fitting 12 is in sealing fit with the central through hole 141 of the water diversion member 14; thus, the water inlet channels 101 are communicated with the water inlet 112, that is, two water inlet channels 101 are simultaneously communicated with one water inlet 112. The supporting arm 142 of the water diversion piece 14 abuts against the inner wall of the installation cavity 111; the water outlet channel 102 is communicated with the water outlet 113 through a gap between the water dividing member 14 and the inner wall of the mounting cavity 111. So set up, realize the concrete layout structure of one income two exports through above-mentioned structure, simple structure, design benefit.

Further, in order to facilitate assembly, in this embodiment, an abutting step 115 is disposed on an inner wall of the mounting cavity 111, an upper end and a lower end of the outer ring member 13 are hermetically attached to the inner wall of the mounting cavity 111, and the upper end of the outer ring member 13 abuts against the abutting step 115 to achieve limiting; the upper end of the water inlet pipe fitting 12 is in sealing contact with the outer ring member 13, and the lower end thereof is in sealing contact with the water diversion member 14 connected with the water inlet 112.

The specific assembly is as follows: firstly, the water diversion piece 14 is arranged in, and then the water diversion piece is arranged in the outer ring piece 13, so that the upper end of the outer ring piece 13 is abutted against the abutting step 115 to realize limiting; then a siphon membrane 20 is arranged; and finally, the water inlet pipe fitting 12 is installed, when the water inlet pipe fitting 12 is installed, the lower end of the water inlet pipe fitting 12 is hermetically installed in the central through hole 141 of the water diversion member 14, and the upper end of the water inlet pipe fitting 12 is hermetically abutted against the outer ring member 13, specifically, the siphon diaphragm 20 is limited between the water inlet pipe fitting 12 and the outer ring member 13, so that the siphon diaphragm 20 is fixed on one hand, and on the other hand, the siphon diaphragm 20 can be hermetically filled in a gap between the water inlet pipe fitting 12 and the outer ring member 13, so that the water inlet pipe fitting 12 and the outer ring member 13 are hermetically matched. Therefore, the device has the characteristics of simple structure and convenience in operation.

Further, the valve body still includes valve gap 16 and relief valve, valve gap 16 covers on valve housing 11, stagnant water structure 15 is the stagnant water subassembly, stagnant water subassembly is connected and is used for the shutoff between valve gap 16 and the water inlet pipe fitting 12 inhalant canal 101, stagnant water subassembly and valve gap 16 enclose to close and form back pressure chamber 151, valve gap 16 has seted up the pressure release passageway (not shown) that communicate back pressure chamber 151, the relief valve assembles on valve gap 16 and controls the logical/disconnected of pressure release passageway. The water in the water inlet channel 101 can flow into the back pressure cavity 151, so that the water stopping assembly is pushed to move towards the water inlet pipe fitting 12, the water inlet pipe fitting 12 is plugged, stopping of water flow is achieved, when the pressure relief valve opens the pressure relief channel, the water in the back pressure cavity 151 flows out from the pressure relief channel, and the water stopping assembly is pushed by the water flow in the water inlet channel 101, so that a water path is opened.

Specifically, the pressure release valve includes an electric pressure release valve 17 and a manual pressure release valve, the pressure release channel has a first pressure release water path and a second pressure release water path which are connected in parallel, the electric pressure release valve 17 controls the on/off of the first pressure release water path, and the manual pressure release valve controls the on/off of the second pressure release water path. So set up, can realize electronic and manual control, can't use when preventing the outage.

More specifically, the manual pressure relief valve comprises a first part and a second part, the first part is assembled on a second pressure relief water path to block the second pressure relief water path, and the first part is provided with a first magnet; the second part can be movably arranged to be close to or far away from the first part, the second part is provided with a second magnet, and when the second part is close to the first part, the first magnet and the second magnet are attracted to drive the first part to move, so that the second pressure relief water path is opened. According to the arrangement, the flushing is started by utilizing the magnetic attraction effect of the first magnet of the first part and the second magnet of the second part; the operator only needs to bring the movable second part close to the position of the first part; the driving force can be greatly reduced; the applicable crowd is wider.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. An anti-siphon flush valve, characterized in that: including valve body and siphon diaphragm, the valve body has inhalant canal, exhalant canal and inspiratory channel, realize the intercommunication through crossing the mouth of a river between inhalant canal and the exhalant canal, realize the intercommunication through crossing the mouth of a river between exhalant canal and the inspiratory channel, be provided with stagnant water structure on the inhalant canal, the siphon diaphragm sets up between crossing the mouth of a river and crossing the mouth of a river.

2. The anti-siphon flush valve according to claim 1, characterized in that: the water inlet channel is located in the middle, the water outlet channel is located on the periphery of the water inlet channel, and the air suction channel is located on the periphery of the water outlet channel.

3. The anti-siphon flush valve according to claim 2, characterized in that: the valve body comprises a valve shell, a water inlet pipe fitting and an outer ring piece, the valve shell is provided with an installation cavity, and a water inlet and a water outlet which are communicated with the installation cavity, the water inlet pipe fitting, the siphon diaphragm and the outer ring piece are all assembled in the installation cavity, the inner cavity of the water inlet pipe fitting is a water inlet channel and is communicated with the water inlet, the outer ring piece is sleeved outside the water inlet pipe fitting and is enclosed with the water inlet pipe fitting to form the water outlet channel, the water outlet channel is communicated with the water outlet, and the water outlet is formed in the water inlet pipe fitting; the outer ring piece is assembled on the inner wall of the valve shell in a sealing mode and jointly encloses to form the air suction channel, the air passing opening is formed in the outer ring piece, the valve shell is provided with an air vent communicated with the air suction channel, and the siphon membrane is arranged between the water inlet pipe piece and the outer ring piece.

4. An anti-siphon flush valve according to claim 3, characterized in that: a plurality of water passing openings are formed and are uniformly distributed on the outer peripheral wall of the water inlet pipe fitting; the air passing holes are also provided with a plurality of air passing holes which are uniformly distributed on the peripheral wall of the outer ring piece, and the siphon diaphragms are annular diaphragms.

5. An anti-siphon flush valve according to claim 3, characterized in that: two mounting cavities of the valve shell are arranged, and each mounting cavity is provided with a water inlet channel, a water outlet channel and an air suction channel; the valve shell is provided with a water inlet and two water outlets, the water inlet is simultaneously communicated with two water inlet channels, the two water outlet channels are communicated with different water outlets, and a one-inlet two-outlet water outlet structure is formed.

6. The anti-siphon flush valve according to claim 5, characterized in that: the bottom parts of the two mounting cavities are respectively provided with a water passing opening communicated with the water inlet, a separating bulge for separating the water passing opening and the water outlet is arranged in each mounting cavity, the mounting cavities are also provided with a water dividing piece, each water dividing piece is provided with a central through hole and a supporting arm extending outwards in the radial direction, the water dividing pieces are in sealing fit with the separating bulges so as to enable the central through holes to be communicated with the water inlets, and the water inlet pipe fittings are assembled in the central through holes of the water dividing pieces in a sealing mode; the supporting arm of the water diversion piece is abutted against the inner wall of the mounting cavity; the water outlet channel is communicated with the water outlet through a gap between the water separating piece and the inner wall of the mounting cavity.

7. An anti-siphon flush valve according to claim 3 or 5, characterized in that: the inner wall of the mounting cavity is provided with a collision step, the upper end and the lower end of the outer ring piece are hermetically attached to the inner wall of the mounting cavity, and the upper end of the outer ring piece abuts against the collision step to realize limiting; the upper end of the water inlet pipe fitting is in sealing butt joint with the outer ring piece, and the lower end of the water inlet pipe fitting is in sealing butt joint with the water dividing piece connected with the water inlet.

8. An anti-siphon flush valve according to claim 3, characterized in that: the valve body further comprises a valve cover and a pressure release valve, the valve cover covers the valve shell, the water stopping structure is a water stopping assembly, the water stopping assembly is connected between the valve cover and the water inlet pipe fitting and used for plugging the water inlet channel, the water stopping assembly and the valve cover are enclosed to form a back pressure cavity, the valve cover is provided with a pressure release channel communicated with the back pressure cavity, and the pressure release valve is assembled on the valve cover and controls the connection/disconnection of the pressure release channel.

9. The anti-siphon flush valve according to claim 8, characterized in that: the pressure relief valve comprises an electric pressure relief valve and a manual pressure relief valve, the pressure relief channel is provided with a first pressure relief water path and a second pressure relief water path which are connected in parallel, the electric pressure relief valve controls the connection/disconnection of the first pressure relief water path, and the manual pressure relief valve controls the connection/disconnection of the second pressure relief water path.

10. The anti-siphon flush valve of claim 9, wherein: the manual pressure relief valve comprises a first part and a second part, the first part is assembled on a second pressure relief water path to seal the second pressure relief water path, and the first part is provided with a first magnet; the second part can be movably arranged to be close to or far away from the first part, the second part is provided with a second magnet, when the second part is close to the first part, the first magnet and the second magnet are attracted to drive the first part to move, and then the second pressure relief waterway is opened.

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