Automatic switching valve

Abstract

The utility model provides an automatic switching valve which comprises a switching valve body and a floating switching piece. The switching valve body is provided with a water inlet channel, a switching cavity, a first water outlet channel and a second water outlet channel. The water inlet channel, the first water outlet channel and the second water outlet channel communicate with the switching cavity through the water inlet, the first water outlet and the second water outlet correspondingly, and the first water outlet is located in the upper portion of the switching cavity. The floating switching piece is vertically and movably installed in the switching cavity, a first blocking part is arranged on the upper portion of the floating switching piece, a second blocking part is arranged on the lower portion of the floating switching piece, and a locking structure is arranged between the floating switching piece and the switching cavity. According to the automatic switching valve provided by the utility model, the floating switching piece with the two plugging parts is provided, the switching action of opening the water outlet is formed between two times of water inlet by comprehensively utilizing water inlet, water cut-off, buoyancy and hydraulic power, the pure mechanical automatic switching valve is formed, and the automatic switching valve has the advantages of being ingenious in structure, small in size and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of switching valve technology, and in particular to an automatic switching valve. Background Technology

[0002] Switching valves have numerous applications, such as in bathrooms and kitchens. Currently, a wide variety of switching valves are available on the market, sufficient to handle various usage scenarios. However, with improvements in some water-using devices, corresponding switching valves also need improvement, such as the toilet flushing switching valve. When a toilet flushes, the first stage involves water flowing from the brush rim, and the second stage involves the main flush; that is, the toilet has two stages of water output. To simplify the water circuit structure, these two water outputs are combined into a single water circuit using a switching valve. However, existing switching valves often employ electronic control to achieve two stages of water output, but this control method often results in complex circuitry and structure, high cost, and large size. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model proposes a mechanical automatic switching valve structure.

[0004] An automatic switching valve includes a switching valve body and a floating switching element.

[0005] The switching valve body is provided with an inlet channel, a switching chamber, a first outlet channel, and a second outlet channel. The inlet channel, the first outlet channel, and the second outlet channel are connected to the switching chamber through an inlet, a first outlet, and a second outlet, respectively, and the first outlet is located at the upper part of the switching chamber.

[0006] The floating switching component is installed vertically within the switching cavity, and has a first sealing part at the top and a second sealing part at the bottom. A locking structure is provided inside the floating switching component or between the floating switching component and the switching cavity.

[0007] The floating switching component is away from the first outlet when there is no water in the switching chamber. The first outlet and the inlet are connected. The second sealing part faces the second outlet and is in a state of blocking or about to block the second outlet.

[0008] When the switching chamber is filled with water for the first time, the locking structure forms a locked state by the push of water force, and restricts the upward movement of the floating switching component. At the same time, the second sealing part also blocks the second outlet under the action of water force. At this time, water flows out of the first outlet.

[0009] When the switching chamber is shut off for the first time, the floating switching component floats up due to the water stored in the switching chamber, which unlocks the locking structure. At the same time, the second sealing part opens the second water outlet, while the first sealing part blocks the first water outlet, switching the connection between the second water outlet and the water inlet.

[0010] The second outlet discharges water during the second water inlet state of the switching chamber.

[0011] When the water level in the switching chamber drops during the second water outage, the floating switching component connects the first outlet and the inlet, and the second sealing part faces the second outlet. At this time, the water will switch back to the first outlet during the next water outage.

[0012] The automatic switching valve provided by this utility model provides a floating switching component with two sealing parts, which can comprehensively utilize water inlet, water stop, buoyancy and hydraulic force to form a switching action of opening the outlet between two water inlets, forming a purely mechanical automatic switching valve with the advantages of ingenious structure, small size and low cost.

[0013] Preferably, the main body of the second sealing part is L-shaped, with one end swinging and mounted on the bottom of the floating switching member, and the other end extending downward to form a baffle. One side of the baffle faces the second outlet, and the other side faces the inlet. The inlet and the second outlet are opposite each other and located at the bottom of the switching chamber, so that when water enters through the inlet, the water can rush towards and push against the baffle, allowing the second sealing member to seal the second outlet by hydraulic force.

[0014] Alternatively, the second sealing part can be a flap, with its top end swinging and installed on the top of the second outlet, and its middle part facing away from the second outlet swinging and installed on the bottom of the floating switching component via a connecting rod. This can also achieve the same effect of sealing the second outlet before the floating switching component floats up, and opening the second outlet after the floating switching component floats up.

[0015] Preferably, the locking structure is oscillatingly mounted on the floating switching component, with one side facing the water inlet and the other side facing the wall of the switching cavity and having a limiting protrusion. The switching cavity has a limiting groove at the initial position of the limiting protrusion. The locking structure forms a locked state by engaging the limiting protrusion with the limiting groove. The structure is simple and easy to form.

[0016] Preferably, for a simplified structure, the locking structure is disposed between the second sealing part and the second water outlet, and the limiting protrusion is provided on the side of the baffle facing the second water outlet, thereby reducing one swinging component, and the second water outlet serves as the limiting groove, thereby reducing the need for one groove.

[0017] Preferably, the floating switching component further includes a guide sleeve, which is fitted around the outer periphery of the main body of the floating switching component. The guide sleeve restricts the horizontal movement flexibility of the floating switching component and provides guidance for the vertical movement of the floating switching component, thus avoiding a situation where the seal is not tight.

[0018] Preferably, the floating switching component is connected to the second sealing part via a vertical connecting rod. The guide sleeve has a density greater than water and slides vertically on the connecting rod. The bottom end of the guide sleeve extends downward and has an unlocking end protruding towards the limiting position. When the main body of the switching floating component floats in the water, due to its high density, the guide sleeve will not immediately float up as well. Therefore, the guide sleeve slides downward relative to the connecting rod and pushes the limiting protrusion downward through the unlocking end. The limiting protrusion pushes out of the limiting groove and unlocks, avoiding the situation where the pulling force of the floating switching component's main body alone cannot drive the limiting protrusion to unlock. This ensures that the locking structure can unlock during the first water outage of the switching chamber.

[0019] Preferably, the second sealing part has a limiting baffle plate at the top of the baffle that bends toward the swing installation position, so that when the second sealing part swings and opens the second outlet to a certain extent, it can press against the side wall of the second outlet or the installation position, thereby limiting the maximum cross angle between the second sealing part and the second outlet.

[0020] Preferably, during the third water inlet state of the switching chamber, the locking structure forms a locked state through hydraulic force, restricting the upward movement of the floating switching component. The second sealing part blocks the second water outlet under hydraulic action, while water flows out of the first water outlet. During the third water outage state of the switching chamber, the floating switching component first floats up and then falls back to its initial state.

[0021] Preferably, to improve the sealing performance of the plug, the first outlet is located at the top of the switching chamber, and the first plug is a plug located at the top of the floating switching component.

[0022] Preferably, the automatic switching valve further includes a water inlet pipe. To prevent active pumping of water from the inlet end of the water inlet pipe due to siphoning during water outages, the water inlet pipe includes an outer pipe and an inner pipe. The top of the outer pipe is closed, and the bottom end has an installation port. An outlet connector connecting to the water inlet channel is provided on the outer periphery of the bottom end. The outlet end of the inner pipe is inserted into the outer pipe through the installation port and connects to the outlet connector through the gap between the outer and inner pipes. The outlet end of the inner pipe is higher than the first water outlet channel of the switching valve body. The inlet end of the inner pipe extends from the installation port of the outer pipe, forming the inlet connector of the water inlet pipe.

[0023] As can be seen from the above description of this utility model, this utility model has the following beneficial effects:

[0024] The automatic switching valve provided by this utility model provides a floating switching component with two sealing parts, which can comprehensively utilize water inlet, water stop, buoyancy and hydraulic force to form a switching action of opening the outlet between two water inlets, forming a purely mechanical automatic switching valve with the advantages of ingenious structure, small size and low cost.

[0025] The main body of the second sealing part is L-shaped, with one end swinging. On the one hand, the structure is simple and can use the push of water to seal the second outlet. On the other hand, it forms an eccentric installation method. When the floating switching component floats, the second sealing part is lifted and driven away from the second outlet by an automatic effect, thereby realizing the automatic unlocking of the locking structure, allowing the floating switching component to continue to float and realize the switching of the outlet.

[0026] The locking structure is located between the second sealing part and the second water outlet, which can simplify the structure and reduce the difficulty of molding and the complexity of assembly.

[0027] The guide sleeve serves two purposes: firstly, it guides the up-and-down movement of the floating switching component, preventing incomplete sealing; secondly, when the floating switching component floats, it actively pushes the limiting protrusion, preventing the limiting protrusion from being unable to be unlocked by the pulling force of the floating switching component's main body floating up. This ensures that the locking structure can be unlocked in the first water-stopped state of the switching chamber.

[0028] The automatic switching valve provided by this utility model can achieve the effect of sequential water output from the first and second water outlets in a two-outlet scenario, and can achieve the effect of water output from the first water outlet twice in a three-outlet scenario. When applied to a toilet flushing system, the third water output can be used as supplementary water for the water seal on the toilet bowl after flushing. Attached Figure Description

[0029] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0030] in:

[0031] Figure 1 This is an axonometric view of an automatic switching valve;

[0032] Figure 2 This is an exploded view of an automatic switching valve;

[0033] Figure 3 A cross-section of an automatic switching valve Figure 1 (Switch to a waterless state inside the cavity)

[0034] Figure 4 A cross-section of an automatic switching valve Figure 2 (Switching to the initial water inlet state in the chamber, water flows out from the first outlet)

[0035] Figure 5 A cross-section of an automatic switching valve Figure 3(Switch to the first water outage state inside the cavity, unlocking the locking structure)

[0036] Figure 6 A cross-section of an automatic switching valve Figure 4 (When the water supply in the switching chamber is interrupted for the first time, the floating switching element rises completely, and the first outlet is blocked.)

[0037] Figure 7 A cross-section of an automatic switching valve Figure 5 (Switch to the second water inlet state in the chamber, water flows out from the second outlet)

[0038] Figure 8 A cross-section of an automatic switching valve Figure 6 (The second water outage state in the switching chamber causes the floating switching element to move downwards.)

[0039] Figure 9 A cross-section of an automatic switching valve Figure 7 (Switch to the second water outage state inside the chamber, and open the first water outlet)

[0040] Figure 10 A cross-section of an automatic switching valve Figure 8 (Switching to the third water inlet state in the chamber, water flows out from the first outlet)

[0041] Figure 11 This is a cross-sectional view of another embodiment; (the second sealing part adopts a flap structure, and the second outlet is in the open state).

[0042] Figures 1 to 11 The markings are as follows: switching valve body 1, water inlet channel 11, switching chamber 12, water inlet 121, first water outlet 122, second water outlet 123, first water outlet channel 13, second water outlet channel 14, floating switching component 2, first sealing part 21, second sealing part 22, baffle 221, limiting baffle 222, limiting protrusion 23, guide sleeve 24, unlocking end 241, water inlet pipe 3, outer pipe 31 and inner pipe 32. Detailed Implementation

[0043] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0044] Please see Figures 1 to 10 An automatic switching valve includes a switching valve body 1 and a floating switching element 2.

[0045] The switching valve body 1 is provided with an inlet channel 11, a switching chamber 12, a first outlet channel 13, and a second outlet channel 14. The inlet channel 11, the first outlet channel 13, and the second outlet channel 14 are respectively connected to the switching chamber 12 through an inlet 121, a first outlet 122, and a second outlet 123, and the first outlet 122 is located at the upper part of the switching chamber 12.

[0046] The floating switching component 2 is movably installed in the switching cavity 12, and has a first sealing part 21 at the top and a second sealing part 22 at the bottom. A locking structure is provided between the floating switching component 2 and the switching cavity 12.

[0047] In one embodiment, to improve the sealing performance of the plug, the first outlet 122 is located at the top of the switching chamber 12, and the first plug 21 is a plug located at the top of the floating switching member 2.

[0048] In one embodiment, the main body of the second sealing part 22 is L-shaped, with one end swinging and mounted at the bottom of the floating switching member 2, and the other end extending downward to form a baffle 221. One side of the baffle 221 faces the second outlet 123, and the other side faces the inlet 121. The inlet 121 and the second outlet 123 are opposite each other and located at the bottom of the switching cavity 12, so that when water enters the inlet 121, the water can rush towards and push the baffle 221, allowing the second sealing member to seal the second outlet 123 by water force. In addition, the second sealing part 22 has a limiting baffle 222 at the top of the baffle 221 that bends towards the swing mounting position, so that when the second sealing part 22 swings and opens the second outlet 123 to a certain extent, it can press against the second outlet 123 or the side wall of the mounting position, thereby limiting the maximum overlap angle between the second sealing part 22 and the second outlet 123.

[0049] Alternatively, please see Figure 11 In other embodiments, the second sealing part 22 is a flap, with its top end swinging and installed on the top of the second outlet 123. The middle part of the side facing away from the second outlet 123 is swinging and installed on the bottom of the floating switching member 2 via a connecting rod. This also allows the second outlet 123 to be blocked before the floating switching member 2 floats up, and the second outlet 123 to be opened after the floating switching member 2 floats up. It should be noted that when the flap blocks the second outlet 123, the pulling force of the connecting rod on the flap acts on the middle part of the flap and is obliquely upward, while the thrust of the water force on the flap acts on the entire flap and is vertical. At this time, the effect of the water force holding the flap is much greater than the effect of the connecting rod on opening the flap. The flap forms a locked state under the action of the water force and is tightly attached to the second outlet.

[0050] In one embodiment, the locking structure is oscillatingly mounted on the floating switching member 2, with one side facing the water inlet 121 and the other side facing the wall of the switching cavity 12 and having a limiting protrusion 23. The switching cavity 12 has a limiting groove at the initial position of the limiting protrusion 23. The locking structure is locked by the limiting protrusion 23 being engaged in the limiting groove. The structure is simple and easy to form.

[0051] Based on the above embodiments, in order to simplify the structure, the locking structure is set between the second sealing part 22 and the second water outlet 123. The baffle 221 is provided with the limiting protrusion 23 on the side facing the second water outlet 123, thereby reducing one swinging part. The second water outlet 123 serves as the limiting groove, thereby reducing the need for setting one groove.

[0052] In other embodiments, the floating switching component 2 further includes a guide sleeve 24, which is fitted around the outer periphery of the main body of the floating switching component 2. The guide sleeve 24 restricts the horizontal movement flexibility of the floating switching component 2 and provides guidance for its vertical movement, preventing incomplete sealing. Preferably, the floating switching component 2 is equipped with a second sealing part 22 via a vertical connecting rod. The guide sleeve 24 has a density greater than water and slides vertically on the connecting rod. The bottom end of the guide sleeve 24 extends downward and has an unlocking end 241 facing the limiting protrusion 23. When the main body of the switching floating component floats in the water, due to its high density, the guide sleeve 24 will not immediately float up as well. As a result, the guide sleeve 24 slides downward relative to the connecting rod and pushes the limiting protrusion 23 downward through the unlocking end 241. The limiting protrusion 23 is pushed out of the limiting groove and unlocked. This avoids the situation where the pulling force of the floating switching component 2 body cannot drive the limiting protrusion 23 to unlock, thus ensuring that the locking structure can be unlocked in the first water stop state of the switching chamber 12.

[0053] When using:

[0054] The floating switching component 2 is away from the first outlet 122 in the initial state when there is no water in the switching chamber 12. The first outlet 122 is connected to the inlet 121. The second sealing part 22 is facing the second outlet 123 and is in a state of blocking or about to block the second outlet 123.

[0055] When the switching chamber 12 is filled with water for the first time, the locking structure forms a locking state by the push of water force, and restricts the floating switching member 2 from moving upward. The second sealing part 22 also blocks the second outlet 123 under the action of water force. At this time, water flows out of the first outlet 122.

[0056] When the switching chamber 12 is in the first water outage state, the floating switching component 2 floats up through the water stored in the switching chamber 12 and drives the locking structure to unlock. At the same time, the second sealing part 22 opens the second water outlet 123, while the first sealing part 21 blocks the first water outlet 122, switching the second water outlet 123 and the water inlet 121 to be connected.

[0057] The second water outlet 123 discharges water during the second water inlet state of the switching chamber 12.

[0058] When the water level in the switching chamber 12 drops during the second water outage, the floating switching component 2 connects the first outlet 122 and the inlet 121, and the second sealing part 22 faces the second outlet 123. At this time, the water will switch back to the first outlet 122 for the next water outage.

[0059] In one embodiment, it can also be applied to scenarios with three water inlets, such as toilet flushing. The first water inlet is for brushing the rim, the second is for main flushing, and the third is for replenishing water. Specifically, when the switching chamber 12 is in the third water inlet state, the locking structure forms a locked state through hydraulic force, restricting the upward movement of the floating switching member 2. The second sealing part 22 blocks the second water outlet 123 under the action of hydraulic force, and water flows out of the first water outlet 122. When the switching chamber 12 is in the third water outlet state, the floating switching member 2 first floats up and then falls back to its initial state.

[0060] Based on the above embodiments, the automatic switching valve further includes a water inlet pipe 3. To prevent active water pumping at the inlet end of the water inlet pipe 3 due to siphoning during water outages, the water inlet pipe 3 includes an outer pipe 31 and an inner pipe 32. The top of the outer pipe 31 is closed, and the bottom end has an installation port. An outlet connector connecting to the water inlet channel 11 is provided on the outer periphery of the bottom end. The outlet end of the inner pipe is inserted into the outer pipe 31 through the installation port and connects to the outlet connector through the gap between the outer pipe 31 and the inner pipe 32. The outlet end of the inner pipe is higher than the first outlet channel 13 of the switching valve body 1. The inlet end of the inner pipe extends from the installation port of the outer pipe 31, forming the inlet connector of the water inlet pipe.

[0061] The automatic switching valve provided by this utility model provides a floating switching component 2 with two sealing parts, which can comprehensively utilize water inlet, water stop, buoyancy and hydraulic force to form a switching action of opening the outlet between two water inlets, forming a purely mechanical automatic switching valve with the advantages of ingenious structure, small size and low cost.

[0062] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. An automatic switching valve, characterized in that, Includes the switching valve body and the floating switching element; The switching valve body is provided with an inlet channel, a switching chamber, a first outlet channel and a second outlet channel; the inlet channel, the first outlet channel and the second outlet channel are respectively connected to the switching chamber through an inlet, a first outlet and a second outlet, and the first outlet is located at the upper part of the switching chamber; The floating switching component is installed vertically within the switching cavity, and has a first sealing part at the top and a second sealing part at the bottom. A locking structure is provided inside the floating switching component or between the floating switching component and the switching cavity. The floating switching component is away from the first outlet when there is no water in the switching chamber. The first outlet and the inlet are connected, and the second sealing part faces the second outlet. The locking structure forms a locked state by hydraulic force when the switching chamber is filled with water for the first time, and restricts the floating switching component from moving upward. The second sealing part blocks the second outlet under the action of hydraulic force, and water flows out of the first outlet. When the switching chamber is shut off for the first time, the floating switching component floats up through the water stored in the switching chamber and drives the locking structure to unlock. The second sealing part opens the second water outlet, the first sealing part blocks the first water outlet, and the second water outlet is connected to the water inlet. The second outlet discharges water during the second water inlet state of the switching chamber; When the water level in the switching chamber drops during the second water outage, the floating switching component connects the first outlet and the inlet, and the second sealing part faces the second outlet.

2. The automatic switching valve according to claim 1, characterized in that, The main body of the second sealing part is L-shaped, with one end swinging and installed at the bottom of the floating switching member, and the other end extending downward to form a baffle. One side of the baffle faces the second water outlet, and the other side faces the water inlet. The water inlet and the second water outlet are opposite each other and located at the bottom of the switching chamber. Alternatively, the second sealing part is a flap, with its top end swinging and installed at the top of the second water outlet, and the middle part of the side facing away from the second water outlet swinging and installed at the bottom of the floating switching member via a connecting rod.

3. An automatic switching valve according to claim 2, characterized in that, The locking structure is oscillatingly mounted on the floating switching component, with one side facing the water inlet and the other side facing the wall of the switching cavity and having a limiting protrusion. The switching cavity has a limiting groove at the initial position of the limiting protrusion, and the locking structure forms a locked state by engaging the limiting protrusion into the limiting groove.

4. An automatic switching valve according to claim 3, characterized in that, The locking structure is disposed between the second sealing part and the second water outlet, and the limiting protrusion is provided on the side of the baffle facing the second water outlet, with the second water outlet serving as the limiting groove.

5. An automatic switching valve according to claim 4, characterized in that, The floating switching component also includes a guide sleeve, which is fitted around the outer periphery of the main body of the floating switching component. The guide sleeve restricts the horizontal movement flexibility of the floating switching component.

6. An automatic switching valve according to claim 5, characterized in that, The floating switching component is installed with a second sealing part via a vertical connecting rod; the guide sleeve has a density greater than water and slides up and down on the connecting rod. The bottom end of the guide sleeve extends downward and has an unlocking end that protrudes towards the limiting position. The guide sleeve slides downward relative to the connecting rod and pushes the limiting protrusion downward through the unlocking end. The limiting protrusion is pushed out from the limiting groove and unlocked.

7. An automatic switching valve according to claim 2, characterized in that, The second sealing part has a limiting baffle plate at the top of the baffle plate that bends toward the swing installation position. The second sealing part limits the maximum cross angle with the second outlet through the limiting baffle plate.

8. An automatic switching valve according to claim 2, characterized in that, The locking structure forms a locked state through hydraulic force during the third water inlet state of the switching chamber, and restricts the upward movement of the floating switching component. The second sealing part blocks the second water outlet under the action of hydraulic force, and water flows out of the first water outlet. During the third water outage state of the switching chamber, the floating switching component first floats up and then falls down and returns to its initial state.

9. An automatic switching valve according to claim 1, characterized in that, The first outlet is located at the top of the switching chamber, and the first sealing part is a plug located at the top of the floating switching component.

10. An automatic switching valve according to claim 1, characterized in that, The automatic switching valve also includes a water inlet pipe, which includes an outer pipe and an inner pipe. The top of the outer pipe is closed, and the bottom has an installation port. The outer periphery of the bottom has a water outlet connector that connects to the water inlet channel. The water outlet of the inner pipe is inserted into the outer pipe through the installation port and connects to the water outlet connector through the gap between the outer and inner pipes. The water outlet of the inner pipe is higher than the first water outlet channel of the switching valve body. The water inlet of the inner pipe extends from the installation port of the outer pipe to form the water inlet connector of the water inlet pipe.

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