Drain pump for washing machine

Abstract

The present invention discloses a drainage pump for a washing machine, comprising a pump body, a stator core, an impeller cavity with an impeller therein, and a drainage port, wherein the stator core is nested on the pump body, a rotor is arranged in the pump body, the rotor is connected to the impeller, the pump body and the impeller cavity are installed together, a drainage port is arranged on the side of the impeller cavity, and a water storage box assembly is also included, wherein the water storage box assembly comprises a water storage box shell, a shell water inlet, a shell water outlet, a water storage box body, a retaining rib, a drawer, and a handle, an inner row pipe is fixedly connected to the shell water inlet, a drainage valve is connected to the inner row pipe, the shell water outlet is fixed and communicated with the impeller cavity, a water inlet is arranged at a position corresponding to the shell water inlet on the water storage box body, a water outlet is arranged at a position corresponding to the shell water outlet, the drawer is installed in the water storage box body, and the handle is arranged on the outer surface of the drawer. The present invention can effectively discharge residual water after washing.

Description

Technical field:

[0001] The invention relates to a drainage pump for a washing machine, and belongs to the technical field of household appliance manufacturing. Background technology:

[0002] At present, drum washing machines and most of the pulsator washing machines abroad use the wastewater discharge method of upper drainage, so a drainage pump is needed to extract the wastewater from the bottom of the washing machine and discharge it upward. However, the existing drainage pumps generally have the following problems: it is difficult for the drainage pump to discharge all the water in the final stage of drainage. This is because the impeller cavity of the drainage pump can no longer be filled with water in the final stage of drainage, and the residual water is mixed with a large amount of air, which makes it impossible for the impeller to push out the last section of water in the drain pipe. When the drainage pump stops working, the residual water in the drain pipe will flow back to the drainage pump, the drain valve and the overflow pipe. The residual wastewater in the above parts is very easy to breed bacteria and produce dirt, which will also affect the hygiene of the next laundry. In addition, for users in high latitudes, when the washing machine is below zero, the residual water will freeze and cause damage to the components of the washing machine, including the drain valve, drain pump, drain pipe and other components.

[0003] Therefore, it is necessary to improve the existing technology to solve the shortcomings of the existing technology. Summary of the invention:

[0004] The present invention aims to solve the problems existing in the prior art and provide a drainage pump for a washing machine, which can effectively drain the residual water after washing.

[0005] The technical solutions adopted by the present invention include: a drainage pump for a washing machine, comprising a pump body, a stator core, an impeller cavity with an impeller therein, and a drain outlet, wherein the stator core is nested on the pump body, a rotor is arranged in the pump body, the rotor is connected to the impeller, the pump body and the impeller cavity are installed together, a drain outlet is arranged on the side of the impeller cavity, and a water storage box assembly is also included, the water storage box assembly includes a water storage box shell, a shell water inlet, a shell water outlet, a water storage box body, a retaining rib, a drawer and a handle, an inner row pipe is fixedly connected to the shell water inlet, the inner row pipe is connected to a drain valve, the shell water outlet is fixed to and communicated with the impeller cavity, a water inlet is arranged on the water storage box body at a position corresponding to the shell water inlet, a water outlet is arranged at a position corresponding to the shell water outlet, the drawer is installed in the water storage box body, and the handle is arranged on the outer surface of the drawer.

[0006] Furthermore, a retaining rib is formed on the water storage box body in front of the water outlet, and the retaining rib is formed on the left side wall and the bottom wall of the water storage box body.

[0007] Furthermore, the water inlet of the shell is located on the upper wall of the water storage box shell, and the water outlet of the shell is located on the left side wall of the water storage box shell.

[0008] Furthermore, a filter column is arranged on the inner surface of the rear wall of the drawer.

[0009] Furthermore, a slide groove is provided on the water storage box shell for the water storage box body to be aligned and installed into.

[0010] Furthermore, waterproof rubber is provided on the edge of the drawer.

[0011] The present invention has the following beneficial effects: the drainage pump for the washing machine of the present invention can store the refluxed waste water in the water storage box, and can simply and conveniently drain the residual water in the washing machine when the user needs it, thereby avoiding the waste water from remaining in the drainage valve, the internal drainage pipe, and the drainage pump. The centralized treatment of waste water reduces the growth of bacteria and dirt in the drainage system of the washing machine, improves the health and hygiene of the washing machine, and also avoids the harm caused by the freezing of residual water for the use of washing machines in high latitudes. Description of the drawings:

[0012] Figure 1 It is a schematic diagram of a drainage pump for a washing machine of the present invention.

[0013] Figure 2 It is an exploded view of the water storage box assembly of the present invention.

[0014] Figure 3 This is the working state of the water storage box of the present invention.

[0015] Figure 4 This is the state when the water storage box of the present invention is taken out.

[0016] Figure 5 This is the filter structure of the drawer of the present invention. Specific implementation method:

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] The drainage pump for a washing machine of the present invention comprises a pump body 1, a stator core 2, an impeller chamber 3 with an impeller therein, a drainage port 4 and a water storage box assembly 5. The structure of the water storage box assembly 5 is exemplified herein as only one form of expression of the present invention, which is used to provide a further understanding of the present invention and does not constitute a limitation of the present invention.

[0019] The pump body 1, the stator core 2, the impeller cavity 3 with an impeller therein and the drain port 4 are all the basic structures of the drain pump for washing machines. The stator core 2 is nested on the pump body 1, and a rotor is arranged in the pump body 1, and the rotor is connected to the impeller. Then the pump body 1 and the impeller cavity 3 are installed together, and the drain port 4 is arranged on the side of the impeller cavity. After power is turned on, the rotor in the pump body 1 drives the impeller to rotate and discharges the waste water in the impeller cavity. It will not be described here.

[0020] The water storage box assembly 5 includes a water storage box shell 6, a shell water inlet 7, a shell water outlet 8, a water storage box body 9, a retaining rib 10, a drawer 11 and a handle 12. The shell water inlet 7 is fixedly connected to an inner drain pipe, and the inner drain pipe is connected to a drain valve. The shell water outlet 8 is fixed and communicated with the impeller chamber. The shell water inlet 7 is located on the upper wall of the water storage box shell 6, and the shell water outlet 8 is located on the left side wall of the water storage box shell 6.

[0021] A water inlet 14 is provided on the water storage box body 9 at a position corresponding to the water inlet 7 of the outer shell, and a water outlet 15 is provided at a position corresponding to the water outlet 8 of the outer shell. A retaining rib 10 is formed on the water storage box body 9 in front of the water outlet. The retaining rib 10 is formed on the left side wall and the bottom wall of the water storage box body 9. A drawer 11 is installed in the water storage box body 9, and its upper wall, bottom wall and left side wall are all hollow. A filter column 13 is provided on the inner surface of the rear wall of the drawer 11, and a handle 12 is provided on the outer surface of the front wall of the drawer 11.

[0022] The water storage box housing 6 is provided with a chute for the water storage box body 9 to be aligned and installed. After the wastewater treatment is completed, the water storage box body 9 is aligned with the chute of the water storage box housing 6 by holding the handle 12 to install the water storage box body 9 into the water storage box housing 6. Waterproof rubber is provided on the edge of the drawer 11 to ensure the sealing between the drawer 11 and the water storage box body 9.

[0023] When the washing machine is draining, the drain valve opens, and the waste water enters the water storage box 9 through the water inlet 7 of the shell. At this time, the state of the water storage box is as follows: Figure 3 . Since the water inlet, water outlet and the inside of the water storage box are in the same space, the waste water flows into the water storage box, is filtered, and then flows out from the water outlet 8 of the outer shell, enters the impeller chamber, and is then pumped out by the pump body and discharged through the drain port 4. When the drainage is completed, the drainage pump no longer works, and the last section of waste water cannot be discharged. It flows back to the water storage box assembly 5 under the action of gravity. When it is necessary to clean the waste water, pull the handle 12 forward by hand. At this time, the state of the water storage box is as follows: Figure 4 As the back wall of the drawer 11 moves to the front of the water outlet, the interior of the water storage box body becomes a closed space, which is isolated from the water inlet and the water outlet. At the same time, due to the effect of the retaining rib 10, the water storage box body 9 can be pulled out as a whole by continuing to pull the handle, pouring out the waste water and cleaning the hair. After the waste water is treated, hold the handle 12 and align the water storage box body 9 with the slide groove of the water storage box shell 6, and push it to the bottom to reset it. At this time, the water storage box is reset to Figure 3 status, and then you can use it normally.

[0024] A filter column 13 is provided on the rear wall of the drawer 11 to filter clothing hair in the waste water to prevent the hair from accumulating into the impeller cavity and clogging the drainage pump.

[0025] Through the drainage pump for washing machines of the present invention, the refluxed waste water will be stored in the water storage box, and the residual water in the washing machine can be simply and conveniently drained when the user needs it, thereby avoiding the waste water from remaining in the drainage valve, the internal drainage pipe, and the drainage pump. The centralized treatment of waste water reduces the growth of bacteria and dirt in the drainage system of the washing machine, improves the health and hygiene of the washing machine, and also avoids the harm caused by the freezing of residual water for the use of washing machines in high latitudes.

[0026] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A drainage pump for a washing machine, comprising a pump body (1), a stator core (2), an impeller chamber (3) in which an impeller is arranged, and a drainage port (4), wherein the stator core (2) is nested in the pump body (1), a rotor is arranged in the pump body (1), the rotor is connected to the impeller, the pump body (1) and the impeller chamber (3) are mounted together, and a drainage port (4) is arranged on the side of the impeller chamber (3), characterized in that: The water storage box assembly (5) is also included, the water storage box assembly (5) comprising a water storage box shell (6), a shell water inlet (7), a shell water outlet (8), a water storage box body (9), a retaining rib (10), a drawer (11) and a handle (12), the shell water inlet (7) is fixedly connected to an inner drainage pipe, the inner drainage pipe is connected to a drainage valve, the shell water outlet (8) is fixed to and communicates with the impeller chamber, a water inlet (14) is provided on the water storage box body (9) at a position corresponding to the shell water inlet (7), and an outlet (15) is provided at a position corresponding to the shell water outlet (8). The water outlet (15) is a drawer (11) installed in the water storage box body (9), and the handle (12) is arranged on the outer surface of the drawer (11). Waste water flows back to the water storage box assembly (5) under the action of gravity. When it is necessary to clean the waste water, the handle (12) is pulled forward by hand, and the rear wall of the drawer (11) moves to the front of the water outlet. At this time, the interior of the water storage box body becomes a closed space, which is isolated from the water inlet and the water outlet. At the same time, due to the effect of the retaining rib (10), the handle can be pulled continuously, and the water storage box body (9) can be pulled out as a whole, and the waste water can be poured out and the hair debris can be cleaned.

2. The drain pump for a washing machine according to claim 1, characterized in that: A retaining rib (10) is formed on the water storage box body (9) at a position in front of the water outlet, and the retaining rib (10) is formed on the left side wall and the bottom wall of the water storage box body (9).

3. The drain pump for a washing machine according to claim 2, characterized in that: The shell water inlet (7) is located on the upper wall of the water storage box shell (6), and the shell water outlet (8) is located on the left side wall of the water storage box shell (6).

4. The drain pump for a washing machine according to claim 3, characterized in that: A filter column (13) is arranged on the inner surface of the rear wall of the drawer (11).

5. The drain pump for a washing machine according to claim 4, characterized in that: The water storage box housing (6) is provided with a slide groove for the water storage box body (9) to be aligned and installed into.

6. The drain pump for a washing machine according to claim 5, characterized in that: Waterproof rubber is provided on the edge of the drawer (11).

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