Flow switcher capable of automatically draining water

Abstract

The utility model discloses a self-drainage flow switcher which comprises valves, an upper cover and a shell, the switcher is specially provided with a drainage station, the drainage station is provided with two valves, a drainage branch pipe where one valve is located is used for drainage, and an air inlet branch pipe where the other valve is located is used for air inlet. And the phenomenon of icing in the device can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of delivery devices, in particular to the technical field of flow switchers. Background Art

[0002] A dispenser is a device used in electrical washing equipment such as washing machines or dishwashers to automatically dispense detergents, softeners or bactericides, such as a detergent dispenser assembly disclosed in the invention with publication number CN110924080A and a liquid detergent dispenser disclosed in the invention with publication number CN102031675B. For the dispenser, the user needs to store the additives to be dispensed in a designated container in advance, and the electrical washing equipment then flushes them into the washing drum through water or other mechanical methods according to the washing process.

[0003] The delivery device is generally equipped with a flow switch with multiple water inlet channels. When this type of delivery device is used as a whole, water may accumulate inside the device because the external water level is higher than the shell. At this time, if the ambient temperature is low (when stored or not used for a long time), the inside of the device may freeze, causing the power mechanism to fail to operate (i.e., malfunction). Summary of the invention

[0004] The purpose of the utility model is to solve the problems in the prior art and to provide a self-draining flow switcher, which can effectively prevent ice from forming inside the device.

[0005] To achieve the above-mentioned purpose, the utility model proposes a self-draining flow switcher, including a valve, an upper cover and a shell. The switcher is specially provided with a drainage station, and the drainage station has two valves, wherein the drainage branch pipe where one of the valves is located is used for drainage, and the intake branch pipe where the other valve is located is used for intake.

[0006] Preferably, the back-pipe opening of the valve for draining water is lower than the back-pipe opening of the valve for inletting air.

[0007] Preferably, the valve includes a spring and a driving mechanism, and branch valve seats are respectively provided in the intake branch pipe and the drainage branch pipe. The driving mechanism is located between the spring and the branch valve seat and includes a crankshaft and a piston. The piston sleeve is arranged outside the crankshaft and a convex wall structure is provided between adjacent surfaces. The crankshaft can drive the piston to slide linearly along the intake branch pipe or the drainage branch pipe through the convex wall structure during rotation.

[0008] Preferably, the crankshaft passes through the piston along the plug hole and a shaft protrusion is provided on the shaft wall, and the inner wall of the plug hole is provided with a plug protrusion that can support the shaft protrusion, and the shaft protrusion and the plug protrusion together constitute a convex wall structure.

[0009] Preferably, the surface of the shaft protrusion is also provided with a pit into which the plug protrusion can sink.

[0010] Preferably, a convex column for the spring to be sleeved is provided on the side of the piston facing the spring.

[0011] Preferably, a slot for inserting the spring is provided on the side of the piston facing the spring.

[0012] Preferably, the valve further comprises a plug body sealing ring, and the plug body sealing ring is arranged on a side of the piston facing the branch valve seat.

[0013] Preferably, a positioning column is provided on the side of the piston facing the branch valve seat, a column ring groove is provided outside the positioning column, and the plug body sealing ring is installed in the column ring groove and can be elastically pressed against the branch valve seat.

[0014] Beneficial effects of the utility model:

[0015] 1) By installing a drainage station connected to the water inlet flow channel and equipped with two valves on the upper cover, when the air inlet branch pipe and the drainage branch pipe of the drainage station are opened simultaneously by using the two valves, the accumulated water inside the device can be drained through the drainage station for the next use, thereby effectively avoiding the phenomenon of ice formation inside the device, and thus fundamentally preventing the problem of power mechanism failure;

[0016] 2) By providing a shaft convex portion with a pit on the shaft wall of the crankshaft and cooperating with a plug convex portion on the inner wall of the plug hole, the shaft convex portion and the plug convex portion together form a convex wall structure, so that the plug convex portion can be used to support different parts of the shaft convex portion so that the piston can stably slide along the intake branch pipe and the drainage branch pipe to the designated position in a straight line, thereby ensuring the smooth opening and closing of the intake branch pipe or the drainage branch pipe;

[0017] 3) By setting a boss and a slot at one end of the piston, the spring can be effectively prevented from falling off the piston, ensuring normal linkage between the spring and the piston. A positioning column with a plug body sealing ring is installed at the other end of the piston, so that the plug body sealing ring can be used to ensure effective sealing of the intake branch pipe and the drainage branch pipe, preventing the drainage station from affecting the normal operation of the water inlet flow channel.

[0018] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a working schematic diagram of the self-draining flow switch of the utility model;

[0020] Figure 2 yes Figure 1 An enlarged schematic diagram of P;

[0021] Figure 3 It is a structural schematic diagram of a self-draining flow switcher of the utility model from one perspective;

[0022] Figure 4 yes Figure 3 AA section view;

[0023] Figure 5 It is a structural schematic diagram of the self-draining flow switch of the utility model from another perspective;

[0024] Figure 6 yes Figure 5 BB section view;

[0025] In the figure: 1-spring, 2-driving mechanism, 21-crankshaft, 211-shaft protrusion, 2111-pit, 22-piston, 221-plug protrusion, 222-protruding column, 223-slot, 224-positioning column, 3-upper cover, 4-housing, 5-plug body sealing ring. DETAILED DESCRIPTION

[0026] See also Figure 1 and Figure 2 The utility model is a self-draining flow switcher, comprising a valve, an upper cover 3 and a housing 4. The switcher is specially provided with a drainage station, and the drainage station has two valves, wherein a drainage branch pipe where one of the valves is located is used for drainage, and an intake branch pipe where the other valve is located is used for intake. In addition, a water inlet channel is provided between the upper cover 3 and the housing 4, and the drainage station is connected to the water inlet channel.

[0027] The back-pipe opening of the valve for draining water is lower than the back-pipe opening of the valve for inlet air.

[0028] The valve includes a spring 1 and a driving mechanism 2. Branch valve seats are respectively provided in the intake branch pipe and the drainage branch pipe. The driving mechanism 2 is located between the spring 1 and the branch valve seat and includes a crankshaft 21 and a piston 22. The piston 22 is sleeved outside the crankshaft 21 and a convex wall structure is provided between adjacent surfaces. The crankshaft 21 can drive the piston 22 to slide linearly along the intake branch pipe or the drainage branch pipe through the convex wall structure during rotation.

[0029] The crankshaft 21 passes through the piston 22 along the plug hole and a shaft protrusion 211 is provided on the shaft wall. The inner wall of the plug hole is provided with a plug protrusion 221 that can support the shaft protrusion 211. The shaft protrusion 211 and the plug protrusion 221 together constitute a convex wall structure.

[0030] The surface of the shaft protrusion 211 is also provided with a recess 2111 into which the plug protrusion 221 can sink.

[0031] The piston 22 is provided with a protruding column 222 on the side facing the spring 1 for the spring 1 to be sleeved.

[0032] The piston 22 is further provided with a slot 223 on the side facing the spring 1 for the spring 1 to be inserted into.

[0033] The valve further comprises a plug body sealing ring 5, and the plug body sealing ring 5 is arranged on a side of the piston 22 facing the branch pipe valve seat.

[0034] A positioning column 224 is provided on the side of the piston 22 facing the branch valve seat, and a column ring groove is provided outside the positioning column 224. The plug body sealing ring 5 is installed in the column ring groove and can be elastically pressed against the branch valve seat.

[0035] Working process of this utility model:

[0036] When the whole machine is in use, the water level is usually higher than the housing 4 (the water level line is as follows Figure 1 ), resulting in water accumulation inside the device. At this time, once the ambient temperature is low (when storing or not used for a long time), the inside of the housing 4 may freeze, which may cause the power mechanism such as the crankshaft 21 to be unable to operate (i.e., function failure).

[0037] To this end, the present application chooses to add a drainage station, so that the user can rotate the crankshaft 51 to cooperate with the spring 1 to control the height of the piston 52, so that the plug body sealing ring 5 is away from or close to the branch valve seat, and finally the air intake branch and the drainage branch are opened or closed. Among them, when the air intake branch and the drainage branch are opened, on the one hand, the gas can enter smoothly to ensure the air pressure balance, and on the other hand, the accumulated water can be discharged smoothly. In addition, for the driving mechanism, the crankshaft 21 can be rotated so that the part of the shaft protrusion 211 with or without the pit 2111 is opposite to the plug protrusion 221. In addition, if Figures 3 to 6 As shown, gas can enter along the direction of arrow M, and water can flow out along the direction of arrow N.

[0038] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A self-draining flow switch, characterized by: It comprises a valve, an upper cover (3) and a shell (4), wherein the switch is specially provided with a drainage station, wherein the drainage station has two valves, wherein a drainage branch pipe where one of the valves is located is used for drainage, and an intake branch pipe where the other valve is located is used for intake.

2. The self-draining flow switch according to claim 1, characterized in that: The back-pipe opening of the valve for draining water is lower than the back-pipe opening of the valve for inlet air.

3. The self-draining flow switcher according to claim 1, characterized in that: The valve comprises a spring (1) and a driving mechanism (2); a branch pipe valve seat is provided in each of the intake branch pipe and the drainage branch pipe; the driving mechanism (2) is located between the spring (1) and the branch pipe valve seat and comprises a crankshaft (21) and a piston (22); the piston (22) is sleeved outside the crankshaft (21) and a convex wall structure is provided between adjacent surfaces; the crankshaft (21) can drive the piston (22) to slide linearly along the intake branch pipe or the drainage branch pipe through the convex wall structure during rotation.

4. The self-draining flow switcher according to claim 3, characterized in that: The crankshaft (21) passes through the piston (22) along the plug hole and a shaft protrusion (211) is provided on the shaft wall, and a plug protrusion (221) that can be supported by the shaft protrusion (211) is provided on the inner wall of the plug hole, and the shaft protrusion (211) and the plug protrusion (221) together constitute a convex wall structure.

5. The self-draining flow switcher according to claim 4, characterized in that: The surface of the shaft protrusion (211) is also provided with a recess (2111) into which the plug protrusion (221) can sink.

6. The self-draining flow switcher according to claim 3, characterized in that: The piston (22) is provided with a protruding column (222) on the side facing the spring (1) for the spring (1) to be sleeved.

7. The self-draining flow switcher according to claim 6, characterized in that: A slot (223) into which the spring (1) can be inserted is also provided on the side of the piston (22) facing the spring (1).

8. The self-draining flow switcher according to claim 3, characterized in that: The valve further comprises a plug body sealing ring (5), wherein the plug body sealing ring (5) is arranged on a side of the piston (22) facing the branch pipe valve seat.

9. The self-draining flow switcher according to claim 8, characterized in that: A positioning column (224) is provided on the side of the piston (22) facing the branch pipe valve seat, a column ring groove is provided outside the positioning column (224), and the plug body sealing ring (5) is installed in the column ring groove and can be elastically pressed against the branch pipe valve seat.

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