A new anti-siphon device for flushing valve

Abstract

The present invention proposes a novel anti-siphon device for a flushing valve, which has a water inlet, a water outlet, and a vent connected to the outside air, and also includes a water inlet passage connected to the water inlet, a water outlet passage with two ends connected to the water inlet passage and the water outlet, and a vent valve, the vent valve is arranged between the water inlet passage and the water outlet passage, and is perpendicular to the water inlet passage, and the vent valve has a sealing surface for connecting or sealing the vent and the water outlet passage. The anti-siphon device can achieve the purpose of anti-siphon, and can avoid the problem of external leakage when the vent valve leaks.

Description

[Technical field]

[0001] The invention relates to the technical field of flush valves, in particular to a novel anti-siphon device for flush valves. [Background technology]

[0002] In the prior art, the vacuum breaking structures of toilet flush valves to prevent siphonage are generally independent of each other and are parallel to the water inlet passage. Figure 1 , there is an independent vacuum breaking device in each water outlet passage of the flushing valve, and the vacuum breaking is parallel to the water inlet passage. There are sealing diaphragms in front and behind the valve core a, and there is a valve seat corresponding to the sealing diaphragm on the valve body. The sealing diaphragm b1 in front of the valve core and the valve seat c1 in front of the valve body form a one-way check function, and the sealing diaphragm b2 behind the valve core and the valve seat c2 behind the valve body form an external seal, which can seal or connect the external air; in order to prevent single vacuum breaking failure and water leakage, the previous technology uses a small water tank to connect the two air permeable passages, and the water self-weight overflows to prevent external leakage. This will increase the volume on the CL line (the CL line is the lower water level line of the water inlet device at the beginning or end of the siphon); in the previous technology, in order to prevent abnormal vacuum breaking and water leakage, a small water tank is often installed on the two vacuum breaking air inlets to prevent water leakage to the outside through overflow, which further increases the volume above CL. The previous structure will result in a large spatial structure and the anti-siphon CL line is too low, which will increase the space above the toilet surface. In addition, since a small water tank is used for overflow, it can only rely on the water's own weight for overflow, and the overflow ability is poor. As long as the leakage is large, it will not have time to overflow and leak to the outside. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose a novel anti-siphon device for a flushing valve, which can achieve the purpose of anti-siphon and avoid the problem of external leakage when the air valve leaks.

[0004] To achieve the above-mentioned purpose, the present invention proposes a new anti-siphon device for a flush valve, which has a water inlet, a water outlet, and a vent connected to the outside air. It also includes a water inlet passage connected to the water inlet, a water outlet passage with two ends respectively connected to the water inlet passage and the water outlet, and a vent valve. The vent valve is arranged between the water inlet passage and the water outlet passage and is perpendicular to the water inlet passage. The vent valve has a sealing surface for connecting or sealing the vent and the water outlet passage.

[0005] Preferably, a one-way valve is installed at the water inlet.

[0006] The present invention also proposes a new anti-siphon device for a flush valve, the flush valve having a water inlet, a first water outlet, a second water outlet, and an air vent connected to the outside air, the flush valve also comprising two water inlet passages and two water outlet passages, the two water inlet passages comprising a first water inlet passage and a second water inlet passage arranged side by side, the two water outlet passages comprising a first water outlet passage whose two ends are connected to the first water inlet passage and the first water outlet, and a second water outlet passage whose two ends are connected to the second water inlet passage and the second water outlet, a breathable valve perpendicular to the water inlet passage is arranged between the first water inlet passage and the second water inlet passage, the breathable valve having two sealing surfaces for opening or sealing the air vent and the two water outlet passages respectively.

[0007] Preferably, an air passage is provided between the first water inlet passage and the second water inlet passage, the air valve is installed in the air passage, the air passage comprises a first air passage provided between the first water inlet passage and the air port, and a second air passage provided between the second water inlet passage and the air port, one side of the valve core of the air valve has a sealing surface A for opening or sealing the first air passage, and the other side has a sealing surface B for opening or sealing the second air passage.

[0008] Preferably, a valve seat A is provided on the side of the first air permeable passage facing the sealing surface A, a valve seat B is provided on the side of the second air permeable passage facing the sealing surface B, and sealing rubbers are provided on the side of the sealing surface A facing the valve seat A and on the side of the sealing surface B facing the valve seat B. The sealing surface A and the sealing surface B are fixedly connected or softly connected so as to be movable relative to each other.

[0009] Preferably, the inlet of the water inlet passage is connected with the water inlet, and the outlet end of the water inlet passage is connected with the inlet end of the water outlet passage. The first water outlet passage and the second water outlet passage are respectively installed with an electromagnetic valve A and an electromagnetic valve B. The electromagnetic valve A is used to control the connection between the first water inlet passage and the first water outlet passage, and the electromagnetic valve B is used to control the connection between the second water inlet passage and the second water outlet passage.

[0010] Preferably, a one-way valve is installed at the water inlet.

[0011] Preferably, the one-way valve includes a base and a non-return sealing rubber member, the base is installed on the water inlet, the outer ring of the base is provided with a sealing ring that tightly fits the inner wall of the water inlet, a plurality of water holes are opened in the base, one end of the non-return sealing rubber member is fixed at the center of the base, and the other end has an umbrella-shaped cover, the outer edge of the umbrella-shaped cover is pressed against the base to close or open the water holes.

[0012] Beneficial effects of the present invention:

[0013] 1. When the air valve leaks, the water will directly spray to the other side. The anti-leakage power adopts the water pressure in the pipeline, which has strong anti-leakage ability.

[0014] 2. The two valve core front sealing diaphragms and valve body valve seat structures in the original technology are combined into an independent one-way valve, which has a simple structure and small space.

[0015] 3. When the anti-siphon device leaks, the water overflow occurs between the two water outlets, saving the space of the small water tank in the previous vacuum destruction structure, which is equivalent to reducing the space on the CL line.

[0016] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of an anti-siphon device of a flush valve in the prior art;

[0018] Figure 2 It is a structural schematic diagram of a second embodiment of a novel anti-siphon device for a flush valve of the present invention;

[0019] Figure 3 yes Figure 2 A top view schematic diagram of

[0020] Figure 4 yes Figure 3 AA section structure schematic diagram;

[0021] Figure 5 yes Figure 4 An enlarged schematic diagram of point D; [Specific implementation method]

[0022] Example 1

[0023] The present invention discloses a novel anti-siphon device for a flushing valve. The flushing valve has a water inlet 100, a water outlet, and a vent 500 communicating with the outside air. The flushing valve also includes a water inlet passage communicating with the water inlet 100, a water outlet passage communicating with the water inlet passage and the water outlet at both ends, and a vent valve 2. The vent valve 2 is arranged between the water inlet passage and the water outlet passage and is perpendicular to the water inlet passage. The vent valve 2 has a sealing surface for connecting or sealing the vent 500 and the water outlet passage. When the vent valve leaks, water will be directly ejected into the water outlet passage on the other side. The anti-leakage power adopts the water pressure in the pipeline itself, and has a strong anti-leakage capability.

[0024] Furthermore, the water inlet passage is connected to the water inlet 100, the outlet end of the water inlet passage is connected to the inlet end of the water outlet passage, and a solenoid valve A4011 is installed in the water outlet passage to control the connection between the water inlet passage and the water outlet passage.

[0025] Furthermore, a one-way valve 4 is installed at the water inlet 100, and the one-way valve 4 can play a reverse check function. Figure 4 The one-way valve 4 includes a base 41 and a non-return sealing rubber member 42. The base 41 is installed on the water inlet 100. The outer ring of the base 41 is provided with a sealing ring 411 that closely matches the inner wall of the water inlet 100. A plurality of water holes are opened in the base 41. One end of the non-return sealing rubber member 42 is fixed at the center of the base 41, and the other end is provided with an umbrella-shaped cover 421. The outer edge of the umbrella-shaped cover 421 is pressed against the base 41. When water flows into the water inlet 100, the water holes are opened, and vice versa, the water holes are closed to achieve reverse non-return.

[0026] Example 2

[0027] See also Figures 2 to 5 The present invention discloses a novel anti-siphon device for a flush valve, wherein the flush valve has a water inlet 100, a first water outlet 201, a second water outlet 202, and an air vent 500 communicating with the outside air, and is characterized in that: the flush valve also includes two water inlet passages and two water outlet passages, the two water inlet passages include a first water inlet passage 301 and a second water inlet passage 302 arranged side by side, the two water outlet passages include a first water outlet passage 401 communicating with the first water inlet passage 301 and the first water outlet 201 at both ends, and a second water outlet passage 402 communicating with the second water inlet passage 302 and the second water outlet 202 at both ends, a breathable valve 2 perpendicular to the water inlet passage is arranged between the first water inlet passage 301 and the second water inlet passage 302, and the breathable valve 2 has two sealing surfaces for opening or sealing the air vent 500 and the two water outlet passages respectively. When the air-permeable valve leaks, the water will be directly ejected into the water inlet passage on the other side. The anti-leakage power adopts the water pressure in the pipeline itself, and has a strong anti-leakage ability.

[0028] Furthermore, the inlet of the water inlet passage is connected with the water inlet 100, and the outlet end of the water inlet passage is connected with the inlet end of the water outlet passage. The first water outlet passage 401 and the second water outlet passage 402 are respectively installed with an electromagnetic valve A4011 and an electromagnetic valve B4021. The electromagnetic valve A4011 is used to control the connection between the first water inlet passage 301 and the first water outlet passage 401, and the electromagnetic valve B4021 is used to control the connection between the second water inlet passage 302 and the second water outlet passage 402.

[0029] Further, a vent passage 3 is provided between the first water inlet passage 301 and the second water inlet passage 302, the vent valve 2 is installed in the vent passage 3, the vent passage 3 includes a first vent passage 31 provided between the first water inlet passage 301 and the vent port 500, and a second vent passage 32 provided between the second water inlet passage 302 and the vent port 500, one side of the valve core of the vent valve 2 has a sealing surface A21 for opening or sealing the first vent passage 31, and the other side has a sealing surface B22 for opening or sealing the second vent passage 32. Specifically, in this embodiment, a valve seat A311 is provided on the side of the first vent passage 31 facing the sealing surface A21, a valve seat B321 is provided on the side of the second vent passage 32 facing the sealing surface B22, and sealing rubbers are provided on the side of the sealing surface A21 facing the valve seat A311, and on the side of the sealing surface B22 facing the valve seat B321. The sealing surface A21 and the sealing surface B22 are fixedly connected or softly connected so as to be movable relative to each other.

[0030] Furthermore, the water inlet 100 is provided with a one-way valve 4, which can play a reverse check function. Figure 4 The one-way valve 4 includes a base 41 and a non-return sealing rubber member 42. The base 41 is installed on the water inlet 100. The outer ring of the base 41 is provided with a sealing ring 411 that closely matches the inner wall of the water inlet 100. A plurality of water holes are opened in the base 41. One end of the non-return sealing rubber member 42 is fixed at the center of the base 41, and the other end is provided with an umbrella-shaped cover 421. The outer edge of the umbrella-shaped cover 421 is pressed against the base 41. When water flows into the water inlet 100, the water holes are opened, and vice versa, the water holes are closed to achieve reverse non-return.

[0031] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A novel anti-siphon device for a flush valve, the flush valve having a water inlet (100), a first water outlet (201), a second water outlet (202), and a vent (500) communicating with the outside air, characterized in that: The flush valve further comprises two water inlet passages and two water outlet passages, the two water inlet passages comprising a first water inlet passage (301) and a second water inlet passage (302) arranged side by side, the two water outlet passages comprising a first water outlet passage (401) whose two ends are in communication with the first water inlet passage (301) and a first water outlet (201), and a second water outlet passage (402) whose two ends are in communication with the second water inlet passage (302) and a second water outlet (202), a breathable valve (2) perpendicular to the water inlet passage is arranged between the first water inlet passage (301) and the second water inlet passage (302), the breathable valve (2) having two sealing surfaces for respectively opening or sealing the breathable opening (500) and the two water outlet passages; A vent passage (3) is provided between the first water inlet passage (301) and the second water inlet passage (302); the vent valve (2) is installed in the vent passage (3); the vent passage (3) comprises a first vent passage (31) provided between the first water inlet passage (301) and the vent port (500); and a second vent passage (32) provided between the second water inlet passage (302) and the vent port (500); one side of the valve core of the vent valve (2) comprises a sealing surface A (21) for opening or sealing the first vent passage (31); and the other side comprises a sealing surface B (22) for opening or sealing the second vent passage (32); The inlet of the water inlet passage is connected to the water inlet (100), and the outlet end of the water inlet passage is connected to the inlet end of the water outlet passage. The first water outlet passage (401) and the second water outlet passage (402) are respectively installed with a solenoid valve A (4011) and a solenoid valve B (4021). The solenoid valve A (4011) is used to control the connection and disconnection between the first water inlet passage (301) and the first water outlet passage (401), and the solenoid valve B (4021) is used to control the connection and disconnection between the second water inlet passage (302) and the second water outlet passage (402).

2. A novel anti-siphon device for a flush valve as claimed in claim 1, characterized in that: A valve seat A (311) is provided on the side of the first air permeable passage (31) facing the sealing surface A (21), a valve seat B (321) is provided on the side of the second air permeable passage (32) facing the sealing surface B (22), and sealing rubber is provided on the side of the sealing surface A (21) facing the valve seat A (311) and on the side of the sealing surface B (22) facing the valve seat B (321), respectively.

3. A novel anti-siphon device for a flush valve as claimed in claim 1 or 2, characterized in that: A one-way valve (4) is installed at the water inlet (100).

4. A novel anti-siphon device for a flush valve as claimed in claim 3, characterized in that: The one-way valve (4) comprises a base (41) and a non-return sealing rubber member (42); the base (41) is mounted on the water inlet (100); the outer ring of the base (41) is provided with a sealing ring (411) that is tightly matched with the inner wall of the water inlet (100); a plurality of water permeable holes are provided in the base (41); one end of the non-return sealing rubber member (42) is fixed at the center of the base (41); the other end of the non-return sealing rubber member (42) is provided with an umbrella-shaped cover (421); the outer edge of the umbrella-shaped cover (421) is pressed against the base (41) to close or open the water permeable holes.

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