Waterway switching device

Abstract

The utility model relates to the technical field of switching devices, in particular to a waterway switching device, and aims to solve the problem that an existing one-inlet and two-outlet valve is easy to break down. In order to achieve the purpose, the waterway switching device comprises a shell, a cavity is formed in the shell, and a first liquid outlet and a second liquid outlet which are communicated with the cavity are formed in the upper end and the lower end of the shell respectively; a floating component is arranged in the shell and can move in the shell to seal the first liquid outlet and the second liquid outlet; the shell is further provided with a liquid inlet, and when the floating component seals the second liquid outlet, the floating component is located below the liquid inlet. The first liquid outlet and the second liquid outlet are both sealed only through the floating component, the second liquid outlet can be opened only through floating of the floating component, no extra force is needed for opening the second liquid outlet, the situation that the second liquid outlet cannot be opened when external force is insufficient is avoided, the failure rate is reduced, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of switching devices, and specifically provides a waterway switching device. Background Art

[0002] A one-inlet, two-outlet valve has one inlet and two outlets. In the water supply circuit of household appliances, it is usually necessary for the inlet of the one-inlet, two-outlet valve to be connected to one of the other outlets.

[0003] Existing patent CN209294533U discloses a three-way water channel reversing mechanism for household appliances, including a vertically arranged tube body, which is divided into an upper chamber and a lower chamber. The upper chamber and the lower chamber are connected by a through hole. The upper chamber is connected to a first water outlet, and the lower chamber is connected to a second water outlet. A float is provided in the upper chamber, which can block the first water outlet or the through hole when the float moves up and down. A pressure reducing seat is provided in the lower chamber, which blocks the through hole. The pressure reducing seat requires a certain water pressure to open. When the water pressure is insufficient, a fault occurs, resulting in obstruction or complete blockage of the water channel connecting the second water outlet, affecting normal operation.

[0004] Accordingly, this field requires a new technical solution to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that the existing one-inlet two-outlet valve is prone to malfunction.

[0006] In a first aspect, the utility model provides a water path switching device, which includes a shell, a cavity formed in the shell, and a first liquid outlet and a second liquid outlet connected to the cavity are respectively provided at the upper and lower ends of the shell; a floating member is provided in the shell, and the floating member is configured to be able to move in the shell to close the first liquid outlet and the second liquid outlet; a liquid inlet is also provided on the shell, and when the floating member closes the second liquid outlet, the floating member is located below the liquid inlet.

[0007] In the preferred technical solution of the above-mentioned water channel switching device, the water channel switching device also includes a sealing member and a connecting member, the floating member and the sealing member are connected by the connecting member, and the sealing member is configured to close the second liquid outlet; when the floating member floats to the upper end of the shell to close the first liquid outlet, it drives the sealing member to move, so that the second liquid outlet is in an open state.

[0008] In a preferred technical solution of the above-mentioned water channel switching device, a first through hole is provided on the blocking member.

[0009] In the preferred technical solution of the above-mentioned water channel switching device, a limiting component is also provided in the cavity, a second through hole is provided on the limiting component, and the connecting component is connected to the sealing component through the second through hole; when the floating member closes the first liquid outlet, the sealing component abuts against the limiting component.

[0010] In a preferred technical solution of the above-mentioned water channel switching device, the limiting member is connected to the inner wall of the cavity, and a plurality of third through holes are provided on the limiting member.

[0011] In a preferred technical solution of the above-mentioned water channel switching device, a blocking member is provided at the second liquid outlet, and the blocking member can limit the downward movement of the blocking member.

[0012] In a preferred technical solution of the above-mentioned water channel switching device, a first guide portion is provided above the shell, and the first guide portion can guide the floating member to move to the first liquid outlet to close the first liquid outlet.

[0013] In a preferred technical solution of the above-mentioned water channel switching device, a second guide portion is provided below the shell, and the second guide portion can guide the floating member to move to the second liquid outlet to close the second liquid outlet.

[0014] In the preferred technical solution of the above-mentioned water channel switching device, the first liquid outlet is connected to the first water outlet pipe, and / or the second liquid outlet is connected to the second water outlet pipe; and / or the second liquid outlet is connected to the second water outlet pipe, and the middle part of the second water outlet pipe is connected to the third water outlet pipe.

[0015] In the preferred technical solution of the above-mentioned water channel switching device, the blocking member is a plate-shaped structure or a spherical structure.

[0016] When adopting the above technical solution, the waterway switching device of the present invention includes a housing, a cavity formed therein, and a first liquid outlet and a second liquid outlet respectively disposed at the upper and lower ends of the housing, each of which is in communication with the cavity; a floating member disposed within the housing, the floating member being configured to move within the housing to close the first liquid outlet and the second liquid outlet; and a liquid inlet disposed on the housing. When the floating member closes the second liquid outlet, the floating member is positioned below the liquid inlet. The first and second liquid outlets of the present invention are both closed solely by the floating member. Compared to the prior art, the present invention eliminates the need for a member to block the second liquid outlet. The second liquid outlet can be opened solely by the floating of the floating member, eliminating the need for additional force to open the second liquid outlet. This prevents the second liquid outlet from being unable to open due to insufficient external force, thereby reducing both failure rates and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a structural schematic diagram of the first preferred embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a second preferred embodiment of the present utility model;

[0020] Figure 3 It is a structural schematic diagram of the third preferred embodiment of the utility model;

[0021] Figure 4 yes Figure 3 A magnified view of the structure at point A;

[0022] Figure 5 1 is a schematic structural diagram of the second liquid outlet in a closed state;

[0023] Reference numerals:

[0024] 11. Shell; 110. Cavity; 111. First liquid outlet; 112. Second liquid outlet; 113. Liquid inlet; 114. First guide portion; 115. Second guide portion; 12. Floating member; 13. Water inlet pipe; 14. First pipe fitting; 15. Second pipe fitting; 16. Third pipe fitting; 17. Fourth pipe fitting; 18. Connecting member; 19. Sealing member; 191. First through hole; 20. Limiting member; 201. Second through hole; 202. Third through hole; 21. Blocking member. DETAILED DESCRIPTION

[0025] The following describes preferred embodiments of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely intended to illustrate the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art may adjust these embodiments as needed to suit specific applications.

[0026] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," and "right" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance.

[0027] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "connected," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] See first Figure 1 ,like Figure 1 As shown, the water channel switching device of the first preferred embodiment of the present invention includes a shell 11, a cavity 110 is formed in the shell 11, and a first liquid outlet 111 and a second liquid outlet 112 connected to the cavity 110 are respectively provided at the upper and lower ends of the shell 11; a floating member 12 is provided in the shell 11, and the floating member 12 is configured to be able to move in the shell 11 to close the first liquid outlet 111 and the second liquid outlet 112; a liquid inlet 113 is also provided on the shell 11, and when the floating member 12 closes the second liquid outlet 112, the floating member 12 is located below the liquid inlet 113.

[0029] Specifically, the floating member 12 is preferably a float with a density less than that of water. In the initial state, that is, when there is no water in the cavity 110, the floating member 12 is located at the bottom of the cavity 110 and can close the second liquid outlet 112. When water is continuously passed through the liquid inlet 113, since the floating member 12 is located below the liquid inlet 113 and the water is continuously passed through, the water will press the floating member 12, making it impossible for the floating member 12 to float upward. At this time, the liquid inlet 113 is connected to the first liquid outlet 111. When the liquid inlet 113 stops taking in water, the cavity 110 is filled with water, and the water inlet stops, thereby stopping the continuous downward pressure on the floating member 12. The water in the cavity 110 is still, and the floating member 12 will float upward under the action of buoyancy. When the lowest point of the floating member 12 floats to a point above the highest point of the liquid inlet 113 or floats to a position that closes the first liquid outlet 111, water is immediately passed, and the liquid inlet 113 is connected to the second liquid outlet 112. Water enters from the liquid inlet 113 and flows out from the second liquid outlet 112.

[0030] The first liquid outlet 111 and the second liquid outlet 112 of the present invention are both closed only by the floating member 12. Compared with the prior art, the present invention eliminates the need for a member to block the second liquid outlet 112. The second liquid outlet 112 can be opened only by the floating of the floating member 12. No additional force is required to open the second liquid outlet 112, thereby preventing the second liquid outlet 112 from being unable to be opened when the external force (water pressure) is insufficient. This reduces the failure rate and saves costs.

[0031] Continue reading Figure 1A first guide portion 114 is provided above the shell 11. The first guide portion 114 is trumpet-shaped, and its inner diameter gradually increases from top to bottom. It can guide the floating member 12 to move to the first liquid outlet 111 to close the first liquid outlet 111. That is, when the floating member 12 rises to abut against the inner wall of the first guide portion 114 and cannot move upward, the first liquid outlet 111 is closed, and the liquid inlet 113 and the first liquid outlet 111 are disconnected.

[0032] Furthermore, a second guide portion 115 is provided under the shell 11. The second guide portion 115 is trumpet-shaped, and its inner diameter gradually decreases from top to bottom. It can guide the floating member 12 to move to the second liquid outlet 112 to close the second liquid outlet 112. That is, when the floating member 12 descends to abut against the inner wall of the second guide portion 115 and is unable to move downward, the second liquid outlet 112 is closed, and the liquid inlet 113 and the second liquid outlet 112 are disconnected.

[0033] See next Figure 2 ,like Figure 2 As shown, the waterway switching device of the second preferred embodiment of the present invention further includes a sealing member 19 and a connecting member 18 based on the first preferred embodiment. The floating member 12 and the sealing member 19 are connected by the connecting member 18. The sealing member 19 is configured to close the second liquid outlet 112. When the floating member 12 floats to the upper end of the housing 11 and closes the first liquid outlet 111, it drives the sealing member 19 to move, so that the second liquid outlet 112 is opened. This configuration is designed to prevent the floating member 12 from floating when the inlet 113 stops flowing into the water. If the second liquid outlet 112 is not blocked, in special circumstances, after the water stops flowing, the floating member 12 may float up, which may cause most of the water in the cavity 110 to flow out of the second liquid outlet 112, causing the water level to be lower than the liquid inlet 113. As a result, even if the floating member 12 floats to the water surface, it is still located below the liquid inlet 113. At this time, if water enters again, it will still press the floating member 12 downward, making it unable to close the first liquid outlet. 111, and after the connecting member 18 and the blocking member 19 are provided, the second liquid outlet 112 is blocked by the blocking member 19. After the floating member 12 floats up, the blocking member 19 will not move. Only when the floating member 12 floats up to close the first liquid outlet 111, the blocking member 19 will move upward to open the second liquid outlet 112, thereby avoiding the problem that the floating member 12 has not floated up to the point where water leaks, causing subsequent water inflow and making the liquid inlet 113 and the second liquid outlet 112 unable to communicate.

[0034] Although the second preferred embodiment is intended to solve the problem that water leakage in the water chamber prevents the second floating member from floating to the right position, this does not mean that the first preferred embodiment will necessarily have this problem. It is only in special circumstances, such as when the buoyancy of the floating member 12 is weakened over a long period of use or other special circumstances; in the first preferred embodiment, the diameter of the second liquid outlet 112 can also be set to be smaller to ensure that even if water leaks, the floating member 12 is located above the liquid inlet 113 when it floats to the water surface. At this time, water can be immediately passed through, and the liquid inlet 113 and the second liquid outlet 112 can still be connected.

[0035] The sealing member 19 enters and engages with the second liquid outlet 112, thereby blocking the second liquid outlet 112. The floating member 12 abuts the inner wall of the second guide portion 115 above the sealing member 19, completely isolating the liquid inlet 113 from the second liquid outlet 112. When the floating member 12 is at its lowest position, a certain distance exists between the sealing member 19 and the floating member 12 to accommodate the connecting member 18, which is a flexible connecting rope, such as a nylon rope, cotton rope, or braided rope, but may also be other types of flexible ropes.

[0036] See next Figures 3 to 5 The water channel switching device of the third preferred embodiment of the present invention further includes a limiting member 20 on the basis of the second preferred embodiment. The limiting member 20 is arranged in the cavity 110 and is provided with a second through hole 201. The connecting member 18 passes through the second through hole 201 and is connected to the blocking member 19. When the floating member 12 closes the first liquid outlet 111, the blocking member 19 abuts against the limiting member 20 (as shown in FIG. Figure 3 and 4 As shown in FIG, after the floating member 12 moves downward, the blocking member 19 moves downward to block the second liquid outlet 112.

[0037] Furthermore, the limiting member 20 is connected to the inner wall of the cavity 110, and a plurality of third through holes 202 are provided on the limiting member 20. When the blocking member 19 floats up to contact with the limiting member 20 (eg Figure 3 As shown), water can enter the cavity 110 from the liquid inlet 113 and flow to the second liquid outlet 112 through the third through hole 202.

[0038] The limiting member 20 can be a plate-like structure, a U-shaped plate, or a barrel structure, and those skilled in the art can set it according to actual conditions.

[0039] The limiting member 20 can not only limit the position of the blocking member 19 to prevent the blocking member 19 from moving around when moving up and down, but also protect the blocking member 19 so that the blocking member 19 will not be moved by water.

[0040] After the liquid inlet 113 and the second liquid outlet 112 are connected, if you want to connect the liquid inlet 113 with the first liquid outlet 111 again, you need to stop the liquid inlet 113 from flowing in, then drain the liquid in the cavity 110, so that the floating member 12 moves downward to below the liquid inlet 113. Since the blocking member 19 closes the second liquid outlet 112 after the floating member 12 moves downward for a distance, if the floating member 12 is still above the liquid inlet 113 at this time, liquid will not flow in when water is passed through again. The port 113 is connected to the second liquid outlet 112. To avoid this situation, in the second preferred embodiment and the third preferred embodiment, a first through hole 191 can be provided on the blocking member 19. The diameter of the first through hole 191 is much smaller than the diameter of the second liquid outlet 112. For example, the diameter of the second liquid outlet 112 is a preset multiple of the first through hole 191, and the preset multiple can be 2 times, 3 times, 4 times or 5 times. This can achieve the goal of draining the water in the cavity 110 without causing rapid leakage of water.

[0041] In the third preferred embodiment, when the blocking member 19 blocks the second liquid outlet 112 (e.g. Figure 5 As shown), the blocking member 19 is partially or entirely located below the third through hole 202 so that the water in the cavity 110 can be drained and the floating member 12 is restored to its initial state, that is, the floating member 12 is located below the liquid inlet 113.

[0042] Continue reading Figure 4 and 5 The second liquid outlet 112 is provided with a blocking member 21, which can limit the downward movement of the blocking member 19. Specifically, the blocking member 21 is a raised block structure provided on the left and right sides of the second liquid outlet 112, which can limit and support the blocking member 19.

[0043] In other embodiments, the blocking member 21 may also be an annular protrusion circumferentially arranged around the inner wall of the second liquid outlet 112 .

[0044] In other embodiments, the blocking member 21 may not be provided, and the diameter of the blocking member 19 may be directly set to be larger than the diameter of the second liquid outlet 112 .

[0045] See next Figure 1In the present invention, the first liquid outlet 111 is connected to the first water outlet pipeline, the second liquid outlet 112 is connected to the second water outlet pipeline; the second liquid outlet 112 is connected to the second water outlet pipeline, and the middle portion of the second water outlet pipeline is connected to the third water outlet pipeline. Specifically, the first liquid outlet 111 is connected to the first pipe 14, which serves as the first water outlet pipeline; the second liquid outlet 112 is connected to the second pipe 15, which is connected to the third pipe 16 and the fourth pipe 17. The second pipe 15 and the third pipe 16 constitute the second water outlet pipeline, and the second pipe 15 and the fourth pipe 17 constitute the third water outlet pipeline.

[0046] The liquid inlet 113 is connected to the water inlet pipe 13, which is connected to the water inlet source. The water inlet source can stop the water inlet or supply water to the cavity 110 through the water inlet pipe 13. A valve can be set at the source of the water inlet to control the water inlet or stop the water inlet, or a valve can be set in the water inlet pipe 13 to control the water inlet or stop the water inlet.

[0047] It should be noted that the present invention does not impose any limitation on the specific structure of the blocking member 19 . The blocking member 19 may be a plate-shaped structure, a spherical structure, or other types of blocking structures.

[0048] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A waterway switching device, characterized in that: The water channel switching device includes a shell, a cavity is formed in the shell, and a first liquid outlet and a second liquid outlet connected to the cavity are respectively provided at the upper and lower ends of the shell; A floating member is provided in the housing, and the floating member is configured to be movable in the housing to close the first liquid outlet and the second liquid outlet; The housing is further provided with a liquid inlet. When the floating member closes the second liquid outlet, the floating member is located below the liquid inlet.

2. The waterway switching device according to claim 1, characterized in that: The waterway switching device further includes a blocking component and a connecting component. The floating member and the blocking member are connected via the connecting member, and the blocking member is configured to close the second liquid outlet; When the floating member floats up to the upper end of the shell to close the first liquid outlet, it drives the blocking member to move, so that the second liquid outlet is in an open state.

3. The waterway switching device according to claim 2, characterized in that: The blocking component is provided with a first through hole.

4. The waterway switching device according to claim 2, characterized in that: A limiting member is further provided in the cavity, the limiting member is provided with a second through hole, and the connecting member passes through the second through hole and is connected to the blocking member; When the floating member closes the first liquid outlet, the blocking member abuts against the limiting member.

5. The waterway switching device according to claim 4, characterized in that: The limiting member is connected to the inner wall of the cavity, and a plurality of third through holes are provided on the limiting member.

6. The waterway switching device according to claim 2, characterized in that: A blocking member is provided at the second liquid outlet, and the blocking member can limit the blocking member from moving downward.

7. The waterway switching device according to any one of claims 1 to 6, characterized in that: A first guide portion is provided above the housing, and the first guide portion can guide the floating member to move to the first liquid outlet to close the first liquid outlet.

8. The waterway switching device according to any one of claims 1 to 6, characterized in that: A second guide portion is provided below the housing, and the second guide portion can guide the floating member to move to the second liquid outlet to close the second liquid outlet.

9. The waterway switching device according to any one of claims 1 to 6, characterized in that: The first liquid outlet is connected to a first water outlet pipeline, And / or, the second liquid outlet is connected to a second water outlet pipeline; And / or, the second liquid outlet is connected to a second water outlet pipeline, and the middle portion of the second water outlet pipeline is connected to a third water outlet pipeline.

10. The waterway switching device according to claim 2, characterized in that: The blocking component is a plate-shaped structure or a spherical structure.

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