CN216479087U - Backflow flushing valve - Google Patents
Backflow flushing valve Download PDFInfo
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- CN216479087U CN216479087U CN202123153967.8U CN202123153967U CN216479087U CN 216479087 U CN216479087 U CN 216479087U CN 202123153967 U CN202123153967 U CN 202123153967U CN 216479087 U CN216479087 U CN 216479087U
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Abstract
The utility model discloses a backflow flushing valve, which comprises a valve body, wherein the valve body at least comprises a main pipe and two water outlet pipes communicated with the main pipe, the two ends of the main pipe are provided with control valves which correspond to the water outlet pipes and are used for controlling the opening and closing of the water outlet pipes, and a winding water drainage channel group which is arranged at one end of the control valves and is separated from the water outlet pipes is arranged, and the water drainage channel group and the control valves can be opened and closed and are communicated; the water drainage channel is prolonged, so that the pressure of the water drainage channel group cannot influence the pressure at the pressure relief hole to cause that the control valve cannot be opened; the water storage cavity is arranged on the water drainage channel group to store water, so that the collision between the water discharged from the water outlet pipe and the water pressure of the water drainage channel group when the control valve is opened next time is avoided; and the water storage cavity is provided with a one-way valve, so that the water flow of the water outlet pipe cannot flow into the water storage cavity.
Description
Technical Field
The utility model relates to a bathroom product technical field especially relates to a backward flow flushometer.
Background
The closestool is the necessity of life, and along with the improvement of standard of living to and the continuous promotion of aesthetic requirement, people also are more and more high to requirements such as the outward appearance of closestool and convenience of use, in order to satisfy people's demand, intelligent closestool takes place.
In order to make the whole closestool more beautiful and concise, the closestool on the market is designed into a flat structure without a water storage tank, and because the water storage tank is not arranged, the closestool mostly adopts a water passing device to control a tap water supply pipeline to directly supply water for flushing. In the conventional toilet, a washing water channel for washing a bowl wall surface of a toilet seat and a spray water channel for spraying a bottom of a bowl of the toilet seat are provided in many cases, and therefore, a water passing device is generally used for controlling on/off of the washing water channel and the spray water channel at the same time.
At present, most of backflow flushing valves on the market are provided with a water inlet pipe and two water outlet pipes, wherein the water inlet pipe is communicated with a tap water pipeline, one water outlet pipe is communicated with a washing water channel of a closestool, and the other water outlet pipe is communicated with a spraying water channel of the closestool. However, the existing drainage channels communicated with the water outlet pipe on the market are basically directly communicated and drained from the top of the water outlet pipe, the stroke of the drainage channels is short, the pressure of the drainage hole at the top of the water outlet pipe influences the pressure of the pressure relief hole, the two pressures are balanced, and the control valve cannot be opened.
SUMMERY OF THE UTILITY MODEL
The utility model provides a reflux flushing valve for solving the problems.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a backward flow flushometer, includes the valve body, the valve body at least including be responsible for and with be responsible for two outlet pipes that link up mutually, be responsible for both ends be provided with the outlet pipe is corresponding and be used for control the control valve that the outlet pipe opened and close, with the outlet pipe is spaced each other and is kept away from the water drainage passageway group of the wraparound that control valve one end set up, water drainage passageway group with the control valve can be opened and close and link up the setting.
Preferably, one side of the water drainage channel group, which is far away from the control valve, is provided with a one-way valve; the valve body still includes the inlet tube, two the outlet pipe is including locating the first outlet pipe and the second outlet pipe of inlet tube both sides, the inlet tube first outlet pipe with the second outlet pipe is followed the axial interval that is responsible for is arranged connect in be responsible for on, the inlet tube is located set up on the lateral wall in the main pipe with be responsible for the communicating water hole of crossing of inner chamber.
Preferably, the first water outlet pipe and the second water outlet pipe are integrally formed with the main pipe or are assembled in a split manner.
Preferably, the axial of being responsible for is provided with and is located the first apopore and the second apopore of inlet tube both sides, first apopore with the second apopore is connected respectively first outlet pipe with the second outlet pipe.
Preferably, a first valve seat is formed at the first end of the main pipe, a second valve seat is formed at the second end of the main pipe, the first valve seat is provided with a first valve cavity communicated with the water inlet pipe, and the first valve cavity is communicated with the first water outlet pipe through a first valve port; the second valve seat is provided with a second valve cavity communicated with the water inlet pipe, the second valve cavity is communicated with the second water outlet pipe through a second valve port, and the two control valves are respectively arranged on the first valve seat and the second valve seat.
Preferably, the two control valves are respectively set as a first control valve and a second control valve, the first control valve and the second control valve are respectively provided with a pressure relief hole, the outer wall surface of the main pipe is further integrally formed with a first water drainage channel and a second water drainage channel, the first water drainage channel is communicated with the first water outlet pipe and/or the second water outlet pipe, and the second water drainage channel is communicated with the first water outlet pipe and/or the second water outlet pipe; when the first control valve is opened, the water flow discharged from the corresponding pressure relief hole flows into the first water drainage channel, and when the second control valve is opened, the water flow discharged from the corresponding pressure relief hole flows into the second water drainage channel.
Preferably, the first water drainage channel and the second water drainage channel are respectively communicated with the first water outlet pipe and the second water outlet pipe; the water storage device is characterized in that a first water storage tank is arranged on the first water outlet pipe, a second water storage tank is arranged on the second water outlet pipe, the first water storage tank is communicated with a water outlet channel of the first water outlet pipe through a first water outlet hole, and the second water storage tank is communicated with the water outlet channel of the second water outlet pipe through a second water outlet hole.
Preferably, a first water storage cavity and a second water storage cavity are arranged in parallel and are spaced from the first water outlet hole and the second water outlet hole respectively, the first water storage cavity and the second water storage cavity are arranged corresponding to the first water storage tank and the second water storage tank respectively, the first water storage cavity is communicated with the first water drainage channel through a first water drainage hole, and the second water storage cavity is communicated with the second water drainage channel through a second water drainage hole; the pressure relief hole corresponding to the first control valve, the first water drainage channel, the first water drainage hole, the first water storage cavity and the first water outlet hole form a first water drainage channel group, and the pressure relief hole corresponding to the second control valve, the second water drainage channel, the second water drainage hole, the second water storage cavity and the second water outlet hole form a second water drainage channel group.
Preferably, the first control valve and the second control valve respectively further include a valve cover, a water stop rubber mat and an electromagnetic mechanism, the valve cover is connected and fixed at the port of the main pipe and seals and clamps the periphery of the water stop rubber mat between the valve cover and the corresponding valve seat, the middle part of the water stop rubber mat is matched with the corresponding valve port in an opening and closing manner, a pressure chamber is formed between the valve cover and the water stop rubber mat, a through flow passage for communicating the pressure chamber with the water inlet pipe is arranged on the water stop rubber mat, and the electromagnetic mechanism is provided with an electromagnetic iron core for controlling the opening and closing of the pressure release hole; the pressure relief hole is arranged on the valve cover, the valve cover is further provided with a pressure relief joint communicated with the pressure relief hole, and the valve cover is fixedly connected with the port of the main pipe, and the pressure relief joint is communicated with the corresponding water drainage channel.
Preferably, still be equipped with the stagnant water cushion protective sheath of being made by the stereoplasm material on the stagnant water cushion, the middle part cover of stagnant water cushion is located stagnant water cushion protective sheath, be equipped with the flow tube that both ends link up on the stagnant water cushion protective sheath, the flow tube is worn to locate the through-flow way, the inlet tube with the pressure chamber passes through the flow tube is linked together, stagnant water cushion protective sheath with still bounce a second elastic component between the valve gap, connect one on the second elastic component and prevent stifled needle, prevent stifled needle and wear to locate the flow tube, and the cross-sectional dimension who prevents stifled needle is less than the cross-sectional dimension of flow tube, prevent stifled needle and be in it is relative under the drive of second elastic component the flow tube reciprocating motion.
The utility model has the advantages that:
the water drainage channel group is arranged at intervals with the water outlet pipe and is in winding connection with one end, far away from the control valve, of the water outlet pipe, so that the water drainage channel is prolonged, and the pressure of the water drainage channel group cannot influence the pressure at the pressure relief hole, so that the control valve cannot be opened; the water storage cavity is arranged on the water drainage channel group to store water, so that the collision between the water discharged from the water outlet pipe and the water pressure of the water drainage channel group when the control valve is opened next time is avoided; and the water storage cavity is provided with a one-way valve, so that the water flow of the water outlet pipe cannot flow into the water storage cavity.
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 an isometric view of a back-flow flush valve of the present invention.
Fig. 2 is an exploded view of a back-flow flush valve according to the present invention.
Fig. 3 is an exploded cross-sectional view of a back flow flush valve of the present invention.
Fig. 4 is a first axial sectional view of the back-flow flush valve of the present invention.
Fig. 5 is a second axial sectional view of the back-flow flushing valve of the present invention.
Reference numbers in the figures:
10-a valve body; 11-main tube; 111-a first weep hole; 112-a second weep hole; 113-a purge interface; 12-a water inlet pipe; 121-water through holes; 13-a first water outlet pipe; 131-a first valve port; 14-a second water outlet pipe; 141-a second valve port; 15-a first valve seat; 151-a first valve chamber; 16-a second valve seat; 161-a second valve chamber;
20-a first control valve; 21-valve cover; 211-relief vent; 212-pressure relief fitting; 22-water stop rubber mat; 23-water stop rubber mat protective sleeve; 24-a second elastic member; 25-anti-blocking needle; 26-an electromagnetic mechanism;
30-a second control valve; 31-valve cover; 311-pressure relief vent; 312-pressure relief fitting; 32-water stop rubber mat; 33-water stop rubber mat protective sleeve; 34-a second elastic member; 35-anti-blocking needle; 36-an electromagnetic mechanism;
41-a first drainage channel; 42-a second drainage channel;
50-anti-siphon structure; 51-an anti-siphon body; 511-suction inlet; 52-an air inlet; 53-anti-siphon plug.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention to be solved clearer and more obvious, the present invention is further explained in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1 to 5, a backflow flushing valve according to a preferred embodiment of the present invention includes a valve body 10, where the valve body 10 includes a main pipe 11, a water inlet pipe 12, a first water outlet pipe 13, and a second water outlet pipe 14. The inlet tube 12 the first outlet pipe 13 with the second outlet pipe 14 is followed the axial interval arrangement who is responsible for 11 connect in be responsible for on 11, just the inlet tube 12 is located first outlet pipe 13 with between the second outlet pipe 14, the inlet tube 12 is located be responsible for and seted up on the lateral wall in 11 with be responsible for the communicating water hole 121 that crosses of 11 inner chambers of being responsible for. The first water outlet pipe 13 and the second water outlet pipe 14 can be integrally formed with the main pipe 11 or can be assembled in a split manner; in this embodiment, the first water outlet pipe 13 and the second water outlet pipe 14 are separated from the main pipe 11, a first water outlet hole and a second water outlet hole are axially disposed on the main pipe 11 and located at two sides of the water inlet pipe 12, and the first water outlet hole and the second water outlet hole are respectively connected to the first water outlet pipe 13 and the second water outlet pipe 14. A first valve seat 15 is formed at a first end of the main pipe 11, a second valve seat 16 is formed at a second end of the main pipe 11, the first valve seat 15 is provided with a first valve cavity 151 communicated with the water inlet pipe 12, and the first valve cavity 151 is communicated with the first water outlet pipe 13 through a first valve port 131; the second valve seat 16 has a second valve chamber 161 communicating with the inlet pipe 12, and the second valve chamber 161 communicates with the second outlet pipe 14 through a second valve port 141. The back-flow flushing valve further comprises a first control valve 20 movably disposed on the first valve seat 15 to control the opening and closing of the first valve port 131, and a second control valve 30 movably disposed on the second valve seat 16 to control the opening and closing of the second valve port 141.
In this embodiment, the first control valve 20 and the second control valve 30 are respectively provided with pressure relief holes 211 and 311, the outer wall surface of the main pipe 11 is further integrally formed with a first drainage channel 41 and a second drainage channel 42, the first drainage channel 41 is communicated with the first water outlet pipe 13 and/or the second water outlet pipe 14, and the second drainage channel 42 is communicated with the first water outlet pipe 13 and/or the second water outlet pipe 14; when the first control valve 20 is opened, the water flow discharged from the corresponding pressure relief hole 211 flows into the first drain passage 41, and when the second control valve 30 is opened, the water flow discharged from the corresponding pressure relief hole 311 flows into the second drain passage 42. The first drainage channel 41 and the second drainage channel 42 are integrally formed with the main pipe 11, so that the structure is more compact and simpler, and the manufacturing efficiency is greatly improved. In this embodiment, the first drainage channel 41 and the second drainage channel 42 are respectively communicated with the first water outlet pipe 13 and the second water outlet pipe 14, so that when the first control valve 20 and the second control valve 30 are opened, the water flows discharged from the corresponding pressure release holes 211 and 311 are respectively discharged to the first water outlet pipe 13 and the second water outlet pipe 14 for discharging.
In this embodiment, with first apopore separates each other and parallel arrangement has first water storage chamber, with second apopore separates each other and parallel arrangement has the second water storage chamber, first water storage chamber through first outlet with first sluicing passageway 41 link up mutually, second water storage chamber through second outlet 112 with second sluicing passageway 42 link up mutually. The first water storage cavity and the second water storage cavity are far away from the first water drainage channel 41 and one side of the second water drainage channel 42 are respectively provided with a check valve (not shown), and the check valve enables water flowing to a water outlet pipe to be incapable of flowing back to the first water storage cavity and the second water storage cavity.
In this embodiment, a first water storage tank corresponding to the first water storage cavity is arranged on the first water outlet pipe 13, a second water storage tank corresponding to the second water storage cavity is arranged on the second water outlet pipe 14, the first water storage tank is communicated with a water outlet channel of the first water outlet pipe 13 through a first water outlet hole, and the second water storage tank is communicated with a water outlet channel of the second water outlet pipe 14 through a second water outlet hole; when the first control valve 20 and the second control valve 30 are opened to release the pressure, water flows out from the two pressure release holes 211 and 311, flows to the first water drainage channel 41 and the second water drainage channel 42, flows to the first water drainage hole 111 and the second water drainage hole 112, is stored in the first water storage cavity and the second water storage cavity, and flows to the first water outlet pipe 13 and the second water outlet pipe 14 from the first water outlet hole and the second water outlet hole to be discharged.
In this embodiment, still include anti-siphon structure 50, anti-siphon structure 50 includes hollow anti-siphon body 51, sets up on being responsible for 11 the roof and with the communicating air inlet 52 of inlet tube 12 and activity are located in anti-siphon body 51 and with air inlet 52 matched with anti-siphon stopper 53, be equipped with the communicating induction port 511 with the outside air on anti-siphon body 51, anti-siphon stopper 53 can open under the intake water hydraulic pressure effect of inlet tube 12 air inlet 52 so that induction port 511 with inlet tube 12 is linked together, when inlet tube 12 stopped water, anti-siphon stopper 53 closes under the effect of self gravity or the elastic force of first elastic component (not shown) air inlet 52. The anti-siphon structure 50 is skillfully arranged, so that the valve body 10 is simpler and more compact as a whole.
In this embodiment, the first control valve 20 and the second control valve 30 further include valve covers 21 and 31 and water-stopping rubber pads 22 and 32, respectively, the valve covers 21 and 31 are fixed to the port of the main pipe 11 in a covering manner, and the peripheries of the water-stopping rubber pads 22 and 32 are fixed between the valve covers 21 and 31 and the corresponding valve seats in a sealing and clamping manner, the middle portions of the water-stopping rubber pads 22 and 32 are in open-close fit with the corresponding valve ports, pressure chambers are formed between the valve covers 21 and 31 and the water-stopping rubber pads 22 and 32, and the water-stopping rubber pads 22 and 32 are provided with through flow passages for communicating the pressure chambers with the water inlet pipe 12; the pressure relief hole 211, 311 is arranged on the valve cover 21, 31, the valve cover 21, 31 is further provided with a pressure relief joint 212, 312 communicated with the pressure relief hole 211, 311, the valve cover 21, 31 is covered and fixed at the port of the main pipe 11, the pressure relief joint 212, 312 is communicated with a corresponding drainage channel, thereby the structure of the valve cover 21, 31 is simple, and the assembly of the valve cover 21, 31 is simpler and faster.
In this embodiment, the first control valve 20 and the second control valve 30 further include electromagnetic mechanisms 26 and 36, respectively, and the electromagnetic mechanisms 26 and 36 are provided with electromagnetic cores for controlling the opening and closing of the pressure relief holes 211 and 311; the electromagnetic mechanisms 26 and 36 of the first control valve 20 and the second control valve 30 are electrically connected to a control main board (not shown).
In this embodiment, the water-stopping rubber pads 22 and 32 are further provided with water-stopping rubber pad protective sleeves 23 and 33 made of hard materials, the middle parts of the water-stopping rubber mats 22 and 32 are sleeved on the water-stopping rubber mat protective sleeves 23 and 33, the water-stopping rubber mat and the protective sleeves 23 and 33 are provided with a through flow pipe with two through ends, the through flow pipe is arranged in the through flow passage in a penetrating way, the water inlet pipe 12 is communicated with the pressure cavity through the through flow pipe, a second elastic part 24, 34 is also ejected between the water stop rubber mat protective sleeves 23, 33 and the valve covers 21, 31, the second elastic parts 24 and 34 are connected with anti-blocking needles 25 and 35, the anti-blocking needles 25 and 35 are arranged in the draft tube in a penetrating way, and the section size of the anti-blocking needles 25 and 35 is smaller than that of the through flow pipe, and the anti-blocking needles 25 and 35 are driven by the second elastic pieces 24 and 34 to move in a reciprocating mode relative to the through flow pipe. By arranging the water-stopping rubber pad protective sleeves 23 and 33, the second elastic pieces 24 and 34 and the anti-blocking needles 25 and 35, the water-stopping rubber pads 22 and 32 can control the opening and closing of the corresponding valve ports more reliably.
In this embodiment, the water inlet pipe 12, the first water outlet pipe 13 and the second water outlet pipe 14 are arranged in parallel along the axial direction of the main pipe 11, so that the three pipes are arranged in parallel, which is convenient to connect with an external water path, and the installation is very simple and convenient.
At this time, the electromagnetic mechanisms 26 and 36 of the first control valve 20 open the pressure relief hole 211, and water in the pressure chamber between the valve cover 21 and the water-stopping rubber pad 22 is discharged from the pressure relief hole 211, so that the water-stopping rubber pad 22 opens the first valve port 131 under the action of the water inlet pressure of the water inlet pipe 12, and water in the water inlet pipe 12 flows to the first water outlet pipe 13; meanwhile, the water discharged from the pressure relief hole 211 flows to the first water outlet pipe 13 through the first water discharge channel 41, the first water discharge hole 111, and the first water storage cavity, and is discharged together with the water in the first water outlet pipe 13.
At this time, the electromagnetic mechanism 36 of the second control valve 30 opens the pressure relief hole 311, and water in the pressure chamber between the valve cover 31 and the water-stopping rubber pad 32 is discharged from the pressure relief hole 311, so that the water-stopping rubber pad 32 opens the second valve 141 under the action of the water inlet pressure of the water inlet pipe 12, and the water of the water inlet pipe 12 flows to the second water outlet pipe 14; meanwhile, the water discharged from the pressure relief hole 311 flows to the second water outlet pipe 14 through the second water discharge passage 42, the second water discharge hole 112, and the second water storage cavity, and is discharged from the second water outlet pipe 14.
In this embodiment, the main pipe 11 is further provided with a cleaning interface 113 communicated with a human body cleaning device on a toilet cover plate of the toilet, and the cleaning interface 113 is communicated with the water inlet pipe 12.
The utility model arranges the winding drainage channel group which is separated from the water outlet pipe and is far away from one end of the control valve, thereby prolonging the drainage channel, and preventing the pressure of the drainage channel group from influencing the pressure at the pressure relief hole to prevent the control valve from being opened; the water storage cavity is arranged on the water drainage channel group to store water, so that the collision between the water discharged from the water outlet pipe and the water pressure of the water drainage channel group when the control valve is opened next time is avoided; and the water storage cavity is provided with a one-way valve, so that the water flow of the water outlet pipe cannot flow into the water storage cavity.
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. The utility model provides a backward flow flushometer, includes the valve body, the valve body at least including be responsible for and with be responsible for two outlet pipes that link up mutually, be responsible for the both ends be provided with the outlet pipe is corresponding and be used for control the control valve that the outlet pipe opened and close, its characterized in that, with the outlet pipe is the interval each other and keeps away from the water escape passageway group of the wraparound that control valve one end set up, the water escape passageway group with the control valve can be opened and close and link up the setting.
2. The backwash valve as in claim 1, wherein a check valve is provided on a side of said set of drainage passages remote from said control valve; the valve body still includes the inlet tube, two the outlet pipe is including locating the first outlet pipe and the second outlet pipe of inlet tube both sides, the inlet tube first outlet pipe with the second outlet pipe is followed the axial interval that is responsible for is arranged connect in be responsible for on, the inlet tube is located set up on the lateral wall in the main pipe with be responsible for the communicating water hole of crossing of inner chamber.
3. The return flush valve of claim 2, wherein the first outlet pipe and the second outlet pipe are integrally formed with the main pipe or separately assembled.
4. The backflow flushing valve of claim 3, wherein the main pipe is axially provided with a first water outlet hole and a second water outlet hole which are located at two sides of the water inlet pipe, and the first water outlet hole and the second water outlet hole are respectively connected with the first water outlet pipe and the second water outlet pipe.
5. The backflow flush valve according to any one of claims 2 to 4, wherein a first end of said main pipe forms a first valve seat, a second end of said main pipe forms a second valve seat, said first valve seat having a first valve chamber communicating with said inlet pipe, said first valve chamber communicating with said first outlet pipe through a first valve port; the second valve seat is provided with a second valve cavity communicated with the water inlet pipe, the second valve cavity is communicated with the second water outlet pipe through a second valve port, and the two control valves are respectively arranged on the first valve seat and the second valve seat.
6. The backflow flushing valve according to claim 5, wherein the two control valves are respectively provided as a first control valve and a second control valve, the first control valve and the second control valve are respectively provided with a pressure relief hole, the outer wall surface of the main pipe is further integrally formed with a first water drainage channel and a second water drainage channel, the first water drainage channel is communicated with the first water outlet pipe and/or the second water outlet pipe, and the second water drainage channel is communicated with the first water outlet pipe and/or the second water outlet pipe; when the first control valve is opened, the water flow discharged from the corresponding pressure relief hole flows into the first water drainage channel, and when the second control valve is opened, the water flow discharged from the corresponding pressure relief hole flows into the second water drainage channel.
7. The backwash flush valve as in claim 6, wherein said first and second drainage channels are in communication with said first and second outlet pipes, respectively; the water storage device is characterized in that a first water storage tank is arranged on the first water outlet pipe, a second water storage tank is arranged on the second water outlet pipe, the first water storage tank is communicated with a water outlet channel of the first water outlet pipe through a first water outlet hole, and the second water storage tank is communicated with the water outlet channel of the second water outlet pipe through a second water outlet hole.
8. The backwash valve as defined in claim 7, wherein a first water storage chamber and a second water storage chamber are provided in parallel with and spaced from the first outlet hole and the second outlet hole, respectively, the first water storage chamber and the second water storage chamber are provided corresponding to the first water storage tank and the second water storage tank, respectively, the first water storage chamber is communicated with the first water escape passage through a first water escape hole, and the second water storage chamber is communicated with the second water escape passage through a second water escape hole; the pressure relief hole corresponding to the first control valve, the first water drainage channel, the first water drainage hole, the first water storage cavity and the first water outlet hole form a first water drainage channel group, and the pressure relief hole corresponding to the second control valve, the second water drainage channel, the second water drainage hole, the second water storage cavity and the second water outlet hole form a second water drainage channel group.
9. The back-flow flushing valve according to claim 8, wherein the first control valve and the second control valve each further comprise a valve cover, a water-stop rubber pad, and an electromagnetic mechanism, the valve cover is connected and fixed to the port of the main pipe and seals and clamps the periphery of the water-stop rubber pad between the valve cover and the corresponding valve seat, the middle of the water-stop rubber pad is in open-close fit with the corresponding valve port, a pressure chamber is formed between the valve cover and the water-stop rubber pad, a through flow passage communicating the pressure chamber with the water inlet pipe is provided on the water-stop rubber pad, and the electromagnetic mechanism is provided with an electromagnetic iron core controlling the opening and closing of the pressure relief hole; the pressure relief hole is arranged on the valve cover, the valve cover is further provided with a pressure relief joint communicated with the pressure relief hole, and the valve cover is fixedly connected with the port of the main pipe, and the pressure relief joint is communicated with the corresponding water drainage channel.
10. The backflow flushing valve according to claim 9, wherein a water stop rubber mat protective sleeve made of hard material is further arranged on the water stop rubber mat, the middle part of the water stop rubber mat is sleeved on the water stop rubber mat protective sleeve, a through flow pipe with two through ends is arranged on the water stop rubber mat protective sleeve, the through flow pipe is arranged in a through flow channel in a penetrating mode, the water inlet pipe is communicated with the pressure chamber through the through flow pipe, the water stop rubber mat protective sleeve is also propped against a second elastic piece between the valve cover, a blocking prevention needle is connected onto the second elastic piece, the blocking prevention needle is arranged in the through flow pipe in a penetrating mode, the cross section size of the blocking prevention needle is smaller than that of the through flow pipe, and the blocking prevention needle is driven by the second elastic piece to move in a reciprocating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123153967.8U CN216479087U (en) | 2021-12-15 | 2021-12-15 | Backflow flushing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123153967.8U CN216479087U (en) | 2021-12-15 | 2021-12-15 | Backflow flushing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216479087U true CN216479087U (en) | 2022-05-10 |
Family
ID=81424234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123153967.8U Active CN216479087U (en) | 2021-12-15 | 2021-12-15 | Backflow flushing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216479087U (en) |
-
2021
- 2021-12-15 CN CN202123153967.8U patent/CN216479087U/en active Active
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