A water-gas switching valve

Abstract

The present invention provides a water-gas circuit conversion valve, which relates to the field of valve technology. The water-gas circuit conversion valve of the present invention includes a valve body, a first pressure plate, a second pressure plate, a first flexible valve and a second flexible valve. The water-gas circuit conversion valve provided by the present invention switches each air channel between a positive pressure state and a negative pressure state, thereby driving the first sealing part and the fourth sealing part to switch synchronously between an open state and a closed state, and driving the second sealing part and the third sealing part to switch synchronously between an open state and a closed state, thereby realizing the conversion of the water system's water inlet function and water outlet function through a water-gas circuit conversion valve. Since the water system does not need to set up multiple valves and multiple pipelines to realize the water inlet function and water outlet function, it not only simplifies the structure of the water system, but also reduces the cost of installation and maintenance of the water system, and also reduces the space occupied by the water system.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to a water-gas path switching valve. Background Art

[0002] In the prior art, a water system is required between the water tank and the water-using equipment to facilitate water circulation between the two devices. To achieve both water inlet and outlet functions, this water system typically requires multiple pumps, pipes, and valves. This multitude of pumps, pipes, and valves complicates the water system structure, increases installation and maintenance costs, and occupies a large space. Summary of the Invention

[0003] The present invention provides a water-gas circuit conversion valve to solve the defect in the prior art that the water system has a complex structure in order to realize the water inlet and water outlet functions, and to simplify the structure of the water system while having the water inlet and water outlet functions, thereby reducing the space occupied by the water system.

[0004] The present invention provides a water-gas path switching valve, comprising:

[0005] A valve body, a first cavity is formed on one side of the valve body, and a second cavity is formed on the other side of the valve body; a main liquid supply channel, a plurality of first channels and a plurality of second channels are formed inside the valve body, the first port of each first channel is communicated with the first cavity, and the second port of each first channel is communicated with the second cavity; the first port of each second channel is communicated with the first cavity, and the second port of each second channel is communicated with the second cavity, and the main liquid supply channel is communicated with each second channel; the valve body is provided with a plurality of liquid inlets, a plurality of liquid outlets and a plurality of water equipment connection ports, the liquid inlet is communicated with the first cavity; the liquid outlet is communicated with the second cavity, and the water equipment connection port is communicated with the corresponding first channel;

[0006] a first pressure plate disposed on one side of the valve body, wherein a first cavity and a second cavity are formed on a side of the first pressure plate facing the valve body, and a first air channel communicating with the first cavity and a second air channel communicating with the second cavity are formed inside the first pressure plate;

[0007] a second pressure plate, disposed on the other side of the valve body, wherein a third cavity and a fourth cavity are formed on a side of the second pressure plate facing the valve body, and a third air channel communicating with the third cavity and a fourth air channel communicating with the fourth cavity are formed inside the second pressure plate;

[0008] a first flexible valve, clamped between the first pressure plate and the valve body, and sealingly cooperating with the first cavity, the first cavity, and the second cavity; the first flexible valve is formed with a plurality of first sealing portions and a plurality of second sealing portions, each of the first sealing portions is located between the first cavity and the corresponding first port of the first flow channel, and each of the second sealing portions is located between the second cavity and the corresponding first port of the second flow channel;

[0009] The second flexible valve is clamped between the second pressure plate and the valve body, and is sealed with the second cavity, the third cavity and the fourth cavity; the second flexible valve is formed with multiple third sealing parts and multiple fourth sealing parts, each of the third sealing parts is located between the third cavity and the corresponding second port of the first flow channel, and each of the fourth sealing parts is located between the fourth cavity and the corresponding second port of the second flow channel.

[0010] According to the water-gas path switching valve provided by the present invention, a plurality of the first flow channels are arranged at intervals along the length direction of the valve body, and a plurality of the second flow channels are arranged at intervals along the length direction of the valve body.

[0011] According to the water-gas path switching valve provided by the present invention, the distance between two adjacent first flow channels is equal, and the distance between two adjacent second flow channels is equal.

[0012] According to a water-gas path switching valve provided by the present invention, the main liquid supply flow channel extends along the length direction of the valve body, and the inner diameter of the main liquid supply flow channel is larger than the inner diameter of the second flow channel.

[0013] According to a water-gas path switching valve provided by the present invention, the liquid inlet and the liquid outlet are located on the same side of the valve body, and the water equipment connection port and the liquid inlet are located on opposite sides of the valve body.

[0014] According to the water-gas path switching valve provided by the present invention, the inner diameter of the water-using equipment connection port is equal to the inner diameter of the first flow channel.

[0015] According to the water-gas path switching valve provided by the present invention, the valve body is detachably connected to the first pressure plate and the second pressure plate respectively.

[0016] According to a water-gas path conversion valve provided by the present invention, the first sealing part and the second sealing part are both cylindrical, and the first sealing part and the second sealing part are respectively connected to the first flexible valve through a first connecting part, and the thickness of the first connecting part is less than the thickness of the first flexible valve.

[0017] According to a water-gas path conversion valve provided by the present invention, the third sealing part and the fourth sealing part are both cylindrical, and the third sealing part and the fourth sealing part are respectively connected to the second flexible valve through a second connecting part, and the thickness of the second connecting part is less than the thickness of the second flexible valve.

[0018] According to the water-gas path switching valve provided by the present invention, the first flexible valve and the second flexible valve are both made of rubber.

[0019] The water-gas switching valve provided by the present invention switches each air channel between positive and negative pressure, thereby driving the first and fourth sealing portions to switch between open and closed states synchronously, and the second and third sealing portions to switch between open and closed states synchronously. This allows the water system to switch between water inlet and water outlet functions through a single water-gas switching valve. Because the water system does not require multiple valves and multiple pipelines to achieve water inlet and water outlet functions, the water system structure is simplified, the installation and maintenance costs of the water system are reduced, and the space occupied by the water system is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a side structural diagram of the water-gas path switching valve provided by the present invention;

[0022] Figure 2 yes Figure 1 Schematic diagram of the cross-section structure along the section line AA;

[0023] Figure 3 This is a schematic top view of the water-gas path switching valve provided by the present invention;

[0024] Figure 4 Schematic diagram of the cross-sectional structure of the water-gas path switching valve provided by the present invention in a water inlet working condition;

[0025] Figure 5 It is a schematic cross-sectional structural diagram of the water-gas path conversion valve provided by the present invention in a water outlet working condition.

[0026] Reference numerals:

[0027] 100. Valve body; 110. First cavity; 120. Second cavity; 130. Main liquid supply channel; 140. First channel; 150. Second channel; 160. Liquid inlet; 170. Liquid outlet; 180. Water equipment connection port; 200. First pressure plate; 210. First cavity; 220. Second cavity; 230. First air channel; 240. Second air channel; 250. First air path; 300. Second pressure plate; 310. Third cavity; 320. Fourth cavity; 330. Third air channel; 340. Fourth air channel; 350. Second air path; 400. First flexible valve; 410. First sealing part; 420. Second sealing part; 430. First connecting part; 500. Second flexible valve; 510. Third sealing part; 520. Fourth sealing part; 530. Second connecting part; 600. Water pump. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0029] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0031] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0033] The following combination Figure 1-Figure 5 The water-gas switching valve of the present invention is described.

[0034] Figure 1 The side view of the water-gas switching valve provided by the present invention is illustrated. Figure 2 Example Figure 1 The schematic diagram of the cross-section structure along the section line AA is shown in the figure. Figure 3 The schematic diagram of the top view of the water-gas switching valve provided by the present invention is shown as follows: Figures 1 to 3 As shown, the water-gas switching valve of the present invention includes a valve body 100, a first pressure plate 200, a second pressure plate 300, a first flexible valve 400 and a second flexible valve 500. One side of the valve body 100 ( Figure 2 The upper side of the valve body 100) is formed with a first cavity 110, and the other side of the valve body 100 ( Figure 2A second cavity 120 is formed on the lower side of the valve body 100. A main liquid supply channel 130, multiple first channels 140, and multiple second channels 150 are formed within the valve body 100. The first port of each first channel 140 communicates with the first cavity 110, and the second port of each first channel 140 communicates with the second cavity 120. The first port of each second channel 150 communicates with the first cavity 110, and the second port of each second channel 150 communicates with the second cavity 120. The main liquid supply channel 130 communicates with each second channel 150. The valve body 100 is provided with multiple liquid inlets 160, multiple liquid outlets 170, and multiple water-using equipment connection ports 180. The liquid inlets 160 communicate with the first cavity 110, the liquid outlets 170 communicate with the second cavity 120, and the water-using equipment connection ports 180 communicate with the corresponding first channel 140.

[0035] The first pressing plate 200 is provided on one side of the valve body 100. A first cavity 210 and a second cavity 220 are formed on the side of the first pressing plate 200 facing the valve body 100. The first cavity 210 and the second cavity 220 are formed along the length direction of the first pressing plate 200 ( Figure 2 The first pressure plate 200 extends in the front-to-back direction, and a first air passage 230 communicating with the first cavity 210 and a second air passage 240 communicating with the second cavity 220 are formed inside the first pressure plate 200.

[0036] The second pressing plate 300 is provided on the other side of the valve body 100. A third cavity 310 and a fourth cavity 320 are formed on the side of the second pressing plate 300 facing the valve body 100. The third cavity 310 and the fourth cavity 320 are formed along the length direction of the second pressing plate 300 ( Figure 2 The second pressure plate 300 extends in the front-to-back direction, and a third air passage 330 communicating with the third cavity 310 and a fourth air passage 340 communicating with the fourth cavity 320 are formed inside the second pressure plate 300.

[0037] The first flexible valve 400 is clamped between the first pressure plate 200 and the valve body 100. The first flexible valve 400 extends along the length of the valve body 100 and seals against the first cavity 110, the first cavity 210, and the second cavity 220. The first flexible valve 400 is formed with a plurality of first sealing portions 410 and a plurality of second sealing portions 420. Each first sealing portion 410 is located between the first cavity 210 and the first end of the corresponding first flow channel 140, and each second sealing portion 420 is located between the second cavity 220 and the first end of the corresponding second flow channel 150.

[0038] The second flexible valve 500 is clamped between the second pressure plate 300 and the valve body 100. The second flexible valve 500 extends along the length of the valve body 100 and seals against the second cavity 120, the third cavity 310, and the fourth cavity 320. The second flexible valve 500 is formed with a plurality of third sealing portions 510 and a plurality of fourth sealing portions 520. Each third sealing portion 510 is located between the third cavity 310 and the corresponding second port of the first flow channel 140, and each fourth sealing portion 520 is located between the fourth cavity 320 and the corresponding second port of the second flow channel 150.

[0039] The water-gas switching valve provided by the present invention switches each air channel between positive and negative pressure, thereby driving the first and fourth sealing portions to switch between open and closed states synchronously, and the second and third sealing portions to switch between open and closed states synchronously. This allows the water system to switch between water inlet and water outlet functions through a single water-gas switching valve. Because the water system does not require multiple valves and multiple pipelines to achieve water inlet and water outlet functions, the water system structure is simplified, the installation and maintenance costs of the water system are reduced, and the space occupied by the water system is also reduced.

[0040] In the embodiment of the present invention, for ease of control, the first air channel 230 and the fourth air channel 340 are connected to form a first air path 250, so that positive and negative pressures can be simultaneously applied to the first sealing portion 410 and the fourth sealing portion 520 via the first air channel 230 and the fourth air channel 340. The second air channel 240 and the third air channel 330 are connected to form a second air path 350, so that positive and negative pressures can be simultaneously applied to the second sealing portion 420 and the third sealing portion 510 via the second air channel 240 and the third air channel 330.

[0041] When the first gas path 250 is under negative pressure, due to the presence of the first cavity 210 and the fourth cavity 320, the first sealing portion 410 can move upward, away from the first port of the first flow channel 140, and the first sealing portion 410 is in an open state. The fourth sealing portion 520 can simultaneously move downward, away from the second port of the second flow channel 150, and the fourth sealing portion 520 is in an open state. At the same time, when the second gas path 350 is under positive pressure, due to the presence of the second cavity 220 and the third cavity 310, the third sealing portion 510 can move upward, abutting the second port of the first flow channel 140, and the third sealing portion 510 is in a closed state. The second sealing portion 420 can simultaneously move downward, abutting the first port of the second flow channel 150, and the second sealing portion 420 is in a closed state. By connecting the first air duct 230 and the fourth air duct 340, and connecting the second air duct 240 and the third air duct 330, it is possible to achieve the simultaneous upward movement of the first sealing part 410 and the third sealing part 510, and the simultaneous downward movement of the second sealing part 420 and the fourth sealing part 520, so that the first sealing part 410 and the fourth sealing part 520 are opened, and the second sealing part 420 and the third sealing part 510 are closed.

[0042] When the first gas path 250 is under positive pressure, due to the presence of the first cavity 210 and the fourth cavity 320, the first sealing portion 410 can move downward, abutting the first port of the first flow channel 140, and the first sealing portion 410 is in a closed state. The fourth sealing portion 520 can simultaneously move upward, abutting the second port of the second flow channel 150, and the fourth sealing portion 520 is in a closed state. At the same time, the second gas path 350 is under negative pressure. Due to the presence of the second cavity 220 and the third cavity 310, the third sealing portion 510 can move downward, away from the second port of the first flow channel 140, and the third sealing portion 510 is in an open state. The second sealing portion 420 can simultaneously move upward, away from the first port of the second flow channel 150, and the second sealing portion 420 is in an open state. By the first sealing part 410 and the third sealing part 510 moving downward at the same time, and the second sealing part 420 and the fourth sealing part 520 moving upward at the same time, the first sealing part 410 and the fourth sealing part 520 are closed, and the second sealing part 420 and the third sealing part 510 are opened.

[0043] In an embodiment of the present invention, the liquid inlet 160 is connected to the water outlet of the water pump 600, and the liquid outlet 170 is connected to the water inlet of the water pump 600, so that the water pump 600 can cooperate with the water-gas circuit conversion valve to provide power for realizing the water inlet and water outlet functions of the water system.

[0044] In the embodiment of the present invention, a plurality of first flow channels 140 are arranged at intervals along the length direction of the valve body 100. Figure 2 The second flow channels 150 extend in the thickness direction of the valve body 100, and the second flow channels 150 are arranged at intervals along the length direction of the valve body 100 ( Figure 2 The valve body 100 extends in the thickness direction (in the vertical direction). Multiple first sealing portions 410 and multiple second sealing portions 420 are spaced apart along the length of the valve body 100 and are respectively provided corresponding to the first port of the first flow channel 140 and the first port of the second flow channel 150. Multiple third sealing portions 510 and multiple fourth sealing portions 520 are also spaced apart along the length of the valve body 100, with the third sealing portion 510 corresponding to the second port of the first flow channel 140 and the fourth sealing portion 520 corresponding to the second port of the second flow channel 150. The number of first sealing portions 410, the number of second sealing portions 420, the number of third sealing portions 510, the number of fourth sealing portions 520, and the number of second flow channels 150 are all equal to the number of first flow channels 140, so that a single water-gas path switching valve can achieve water inlet and outlet functions for multiple water-using devices.

[0045] In the embodiment of the present invention, the distance between two adjacent first flow channels 140 is equal, and the distance between two adjacent second flow channels 150 is equal.

[0046] In an embodiment of the present invention, the main liquid supply channel 130 extends along the length of the valve body 100. The inner diameter of the main liquid supply channel 130 is larger than the inner diameter of the secondary flow channel 150, and the main liquid supply channel 130 is perpendicular to the secondary flow channel 150. Because the inner diameter of the main liquid supply channel 130 is larger than the inner diameter of the secondary flow channel 150, the flow rate in the main liquid supply channel 130 is greater than or equal to the flow rate of all the secondary flow channels 150. This allows the main liquid supply channel 130 to supply water to multiple secondary flow channels 150, thereby meeting the water needs of multiple water-consuming devices.

[0047] In an embodiment of the present invention, the liquid inlet 160 and the liquid outlet 170 are located on the same side of the valve body 100, and the water equipment connection port 180 is located on opposite sides of the valve body 100 from the liquid inlet 160. The location of the liquid inlet 160 and the liquid outlet 170 on the same side of the valve body 100 not only facilitates communication between the water pump 600 and the liquid inlet 160 and the liquid outlet 170, but also simplifies the connecting pipes between the water pump 600 and the liquid inlet 160 and the liquid outlet 170.

[0048] In an embodiment of the present invention, the inner diameter of the water-using equipment connection port 180 is equal to the inner diameter of the first flow channel 140, so that the water flow velocity in the first flow channel 140 is the same as the water flow velocity in the water-using equipment connection port 180, ensuring the stability of the water flow in the water-using equipment.

[0049] In an embodiment of the present invention, the outer diameters of the water-using equipment connection port 180, the liquid inlet 160, and the liquid outlet 170 increase continuously toward the valve body. When hoses are connected to the water-using equipment connection port 180, the liquid inlet 160, and the liquid outlet 170, respectively, hoses of different inner diameters can communicate with the water-using equipment connection port 180, the liquid inlet 160, and the liquid outlet 170. Furthermore, the hoses can deform to increase their inner diameter, allowing them to fit tightly with the water-using equipment connection port 180, the liquid inlet 160, and the liquid outlet 170, thereby preventing water leakage from the water-using equipment connection port 180, the liquid inlet 160, and the liquid outlet 170.

[0050] In an embodiment of the present invention, the valve body 100 is detachably connected to the first and second pressure plates 200 and 300, respectively. As the water-gas switching valve continues to operate, impurities in the water accumulate in the first and second cavities 110 and 120, clogging them. Removing the first and second pressure plates 200 and 300 facilitates repair and replacement of the first and second flexible valves 400 and 500, and also allows for cleaning of impurities in the first and second cavities 110 and 120, ensuring continued operation of the water-gas switching valve.

[0051] In an embodiment of the present invention, the first sealing portion 410 and the second sealing portion 420 are both cylindrical, and the first sealing portion 410 and the second sealing portion 420 are respectively connected to the first flexible valve 400 via the first connecting portion 430, and the thickness of the first connecting portion 430 is less than the thickness of the first flexible valve 400. Of course, the first sealing portion 410 and the second sealing portion 420 can also be rectangular or cubed. The smaller the thickness of the first connecting portion 430, the smaller the interaction force between the first sealing portion 410 and the second sealing portion 420. Figure 2 As shown, when the thickness of the first connection portion 430 is smaller, the resistance encountered by the first sealing portion 410 and the second sealing portion 420 when they move up and down in order to switch between the open and closed states is smaller.

[0052] In the embodiment of the present invention, the area of ​​the first flexible valve 400 is larger than the area of ​​the opening of the first cavity 110. Due to the flexibility of the first flexible valve 400, by squeezing the first flexible valve 400, the first flexible valve 400 is tightly fitted to the edge of the first cavity 110, achieving a sealing effect.

[0053] In the embodiment of the present invention, the third sealing portion 510 and the fourth sealing portion 520 are both cylindrical, and the third sealing portion 510 and the fourth sealing portion 520 are respectively connected to the second flexible valve 500 via the second connecting portion 530, and the thickness of the second connecting portion 530 is less than the thickness of the second flexible valve 500. Of course, the third sealing portion 510 and the fourth sealing portion 520 can also be rectangular or cube-shaped. The smaller the thickness of the second connecting portion 530, the smaller the interaction force between the third sealing portion 510 and the fourth sealing portion 520. Figure 2 As shown, when the thickness of the second connection portion 530 is smaller, the resistance to the up and down movement of the third sealing portion 510 and the fourth sealing portion 520 in order to switch between the open and closed states is smaller.

[0054] In the embodiment of the present invention, the area of ​​the second flexible valve 500 is larger than the area of ​​the opening of the second cavity 120. Since the second flexible valve 500 is flexible, by squeezing the second flexible valve 500, the second flexible valve 500 is tightly fitted to the edge of the second cavity 120, achieving a sealing effect.

[0055] In this embodiment of the present invention, both the first flexible valve 400 and the second flexible valve 500 are made of rubber. The first sealing portion 410, the second sealing portion 420, the first connecting portion 430, and the first flexible valve 400 are integrally formed, simplifying the structure of the water-gas switching valve. The third sealing portion 510, the fourth sealing portion 520, the second connecting portion 530, and the second flexible valve 500 are also integrally formed, further simplifying the structure of the water-gas switching valve.

[0056] The working principle of the water-gas switching valve of the present invention is as follows:

[0057] Figure 4 The cross-sectional structure diagram of the water-gas switching valve provided by the present invention in the water inlet working condition is illustrated as follows: Figure 4 As shown, water flows from the water tank into the water-using equipment:

[0058] The first gas path 250 is under negative pressure, while the second gas path 350 is under positive pressure. Under the action of the gas pressure, the first sealing portion 410 and the third sealing portion 510 move upward simultaneously, with the first sealing portion 410 moving away from the first port of the first flow channel 140 and being in an open state. The third sealing portion 510 abuts the second port of the first flow channel 140 and is in a closed state. At the same time, the second sealing portion 420 and the fourth sealing portion 520 move downward simultaneously, with the second sealing portion 420 abutting the first port of the second flow channel 150 and being in a closed state. The fourth sealing portion 520 moves away from the second port of the second flow channel 150 and is in an open state.

[0059] After the water pump 600 is turned on, water flows from the water tank through the main liquid supply channel 130, the second channel 150, the second cavity 120, the liquid outlet 170, the water inlet of the water pump 600, the water outlet of the water pump 600, the liquid inlet 160, the first cavity 110, the first channel 140 and the water equipment connection port 180 into the water equipment.

[0060] Figure 5 The cross-sectional structure diagram of the water-gas switching valve provided by the present invention in the water outlet working condition is illustrated as follows: Figure 5 As shown, water flows from the water-using equipment back to the water storage tank:

[0061] The first gas path 250 is under positive pressure, and the second gas path 350 is under negative pressure. Under the action of the gas pressure, when the second sealing portion 420 and the fourth sealing portion 520 move upward simultaneously, the second sealing portion 420 moves away from the first port of the second flow channel 150, and the second sealing portion 420 is in an open state, and the fourth sealing portion 520 abuts the second port of the second flow channel 150, and the fourth sealing portion 520 is in a closed state. At the same time, the first sealing portion 410 and the third sealing portion 510 move downward simultaneously, the first sealing portion 410 abuts the first port of the first flow channel 140, and the first sealing portion 410 is in a closed state, and the third sealing portion 510 moves away from the second port of the first flow channel 140, and the third sealing portion 510 is in an open state.

[0062] After the water pump 600 is turned on, water flows back to the water tank from the water-using equipment through the water-using equipment connection port 180, the first flow channel 140, the second cavity 120, the liquid outlet 170, the water inlet of the water pump 600, the water outlet of the water pump 600, the liquid inlet 160, the first cavity 110, the first flow channel 140 and the main liquid supply channel 130.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A water-gas switching valve, characterized in that: include: A valve body, a first cavity is formed on one side of the valve body, and a second cavity is formed on the other side of the valve body; a main liquid supply channel, a plurality of first channels and a plurality of second channels are formed inside the valve body, the first port of each first channel is communicated with the first cavity, and the second port of each first channel is communicated with the second cavity; the first port of each second channel is communicated with the first cavity, and the second port of each second channel is communicated with the second cavity, and the main liquid supply channel is communicated with each second channel; the valve body is provided with a plurality of liquid inlets, a plurality of liquid outlets and a plurality of water equipment connection ports, the liquid inlet is communicated with the first cavity; the liquid outlet is communicated with the second cavity, and the water equipment connection port is communicated with the corresponding first channel; a first pressure plate disposed on one side of the valve body, wherein a first cavity and a second cavity are formed on a side of the first pressure plate facing the valve body, and a first air channel communicating with the first cavity and a second air channel communicating with the second cavity are formed inside the first pressure plate; a second pressure plate, disposed on the other side of the valve body, wherein a third cavity and a fourth cavity are formed on a side of the second pressure plate facing the valve body, and a third air channel communicating with the third cavity and a fourth air channel communicating with the fourth cavity are formed inside the second pressure plate; a first flexible valve, clamped between the first pressure plate and the valve body, and sealingly cooperating with the first cavity, the first cavity, and the second cavity; the first flexible valve is formed with a plurality of first sealing portions and a plurality of second sealing portions, each of the first sealing portions is located between the first cavity and the corresponding first port of the first flow channel, and each of the second sealing portions is located between the second cavity and the corresponding first port of the second flow channel; The second flexible valve is clamped between the second pressure plate and the valve body, and is sealed with the second cavity, the third cavity and the fourth cavity; the second flexible valve is formed with multiple third sealing parts and multiple fourth sealing parts, each of the third sealing parts is located between the third cavity and the corresponding second port of the first flow channel, and each of the fourth sealing parts is located between the fourth cavity and the corresponding second port of the second flow channel.

2. The water-gas switching valve according to claim 1, characterized in that: A plurality of the first flow channels are arranged at intervals along the length direction of the valve body, and a plurality of the second flow channels are arranged at intervals along the length direction of the valve body.

3. The water-gas switching valve according to claim 1, characterized in that: The distance between two adjacent first flow channels is equal, and the distance between two adjacent second flow channels is equal.

4. The water-gas switching valve according to any one of claims 1 to 3, characterized in that: The main liquid supply flow channel extends along the length direction of the valve body, and the inner diameter of the main liquid supply flow channel is larger than the inner diameter of the second flow channel.

5. The water-gas switching valve according to any one of claims 1 to 3, characterized in that: The liquid inlet and the liquid outlet are located on the same side of the valve body, and the water equipment connection port and the liquid inlet are located on opposite sides of the valve body.

6. The water-gas switching valve according to claim 5, characterized in that: The inner diameter of the water-using equipment connection port is equal to the inner diameter of the first flow channel.

7. The water-gas switching valve according to any one of claims 1 to 3, characterized in that: The valve body is detachably connected to the first pressing plate and the second pressing plate respectively.

8. The water-gas switching valve according to any one of claims 1 to 3, characterized in that: The first sealing portion and the second sealing portion are both cylindrical. The first sealing portion and the second sealing portion are respectively connected to the first flexible valve through a first connecting portion. The thickness of the first connecting portion is smaller than the thickness of the first flexible valve.

9. The water-gas switching valve according to claim 8, characterized in that: The third sealing portion and the fourth sealing portion are both cylindrical. The third sealing portion and the fourth sealing portion are respectively connected to the second flexible valve via a second connecting portion. The thickness of the second connecting portion is smaller than that of the second flexible valve.

10. The water-gas switching valve according to claim 9, characterized in that: The first flexible valve and the second flexible valve are both made of rubber.

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