Water pumping mechanism and cleaning machine

Abstract

The utility model relates to a water pumping mechanism which comprises a base, a cavity is formed in the base, and a water drawing opening used for drawing water outwards, a water return opening used for returning water into the cavity and a water drainage opening used for draining water outwards are formed in the base. An output shaft of the motor extends into the cavity of the base; and the impeller sleeves the output shaft of the motor and can move up and down along the output shaft of the motor based on forward and reverse rotation of the motor. The water pumping mechanism is simpler in structure and low in energy consumption, and water drawing and water draining functions can be achieved at the same time. The utility model further relates to a cleaning machine which comprises a box body and the water pumping mechanism, the base in the water pumping mechanism is fixedly arranged at the bottom of the box body, and the water drawing opening and the water return opening in the base are both communicated with the box body. The cleaning machine is convenient to install and low in cost.

Description

Technical Field

[0001] The utility model relates to a water pumping mechanism and also relates to a cleaning machine using the water pumping mechanism. Background Art

[0002] As people's living standards continue to improve, dishwashers, as a kitchen appliance, are increasingly entering households. Currently, dishwashers on the market are generally divided into three types: desktop, cabinet, and tank. Among them, desktop dishwashers are integrated independent structures and are generally placed on the table for use; cabinet dishwashers are also independent structures, but need to be embedded in kitchen cabinets for use; tank dishwashers are combined with sinks and are generally installed in kitchen cabinets for use.

[0003] The structure of the sink type cleaning machine currently on the market is mainly the structure mentioned in the applicant's prior application CN201310750968.1 "Sink Type Cleaning Machine", which includes a box body forming a washing space, the box body includes a sink body and a cover plate rotatably connected to the sink body, the bottom of the sink body has a concave drain area at least in the central part, a water pump is arranged in the drain area to pump water out of the drain area to the washing space above the drain area, the drain area is covered with a drain plate with drain holes, and a rotating spray arm connected to the water pump fluid and having a water outlet hole is arranged above the drain plate. In order to solve the integrated installation of functional components and meet the needs of water drawing and drainage at the same time, the applicant's prior application CN202020145122.0 "A cleaning machine" is based on the above structure, and the pump mechanism is arranged outside the water tank body, the upper end of the output shaft of the pump mechanism extends into the water tank body, and is used to pump the water in the drain area to the top of the drain plate, the pump mechanism includes an impeller assembly connected to the upper end of the output shaft, the bottom of the pump mechanism is provided with a water storage chamber, the lower end of the output shaft of the pump mechanism extends into the water storage chamber and is connected with a drainage impeller, the water storage chamber is connected to the water tank body and has a water outlet for water supply and discharge, and the outlet is provided with a one-way valve that only allows water to be discharged from the water storage chamber. That is, when the motor rotates, only one impeller plays a role, or realizes the water drawing function, or realizes the drainage function, but the motor needs to drive two sets of impellers to rotate at the same time, that is, the motor will do some useless work. Based on this, the requirements for motor selection are relatively high, which will increase the motor cost accordingly. At the same time, the energy consumption of the motor when working is also relatively high. Utility Model Content

[0004] The first technical problem to be solved by the utility model is to provide a water pump mechanism with a simpler structure, which can realize the functions of water drawing and drainage at the same time and has low energy consumption, with respect to the above-mentioned prior art.

[0005] The first technical problem to be solved by the utility model is to provide a cleaning machine with convenient installation and low cost in view of the above-mentioned prior art.

[0006] The utility model solves the above-mentioned first technical problem by adopting a technical solution: a water pump mechanism, characterized in that: it includes:

[0007] A base having a cavity inside, the base is provided with a water inlet for drawing water outward, a water return inlet for returning water into the cavity, and a water discharge inlet for discharging water outward;

[0008] A motor, the output shaft of which extends into the cavity of the base;

[0009] The impeller is sleeved on the motor output shaft and can move up and down along the motor output shaft based on the forward and reverse rotation of the motor.

[0010] Preferably, the water intake port is opened at the upper part of the side wall of the base and is connected to the cavity; the water return port is opened at the middle part of the side wall of the base and is connected to the cavity; the water discharge port is opened at the bottom of the base and is connected to the cavity.

[0011] In order to speed up the drainage, the drainage port is opened at the bottom of the side wall of the base.

[0012] The structure is simple, and the impeller is threadedly connected to the output shaft of the motor.

[0013] Preferably, the outer end portion of the motor output shaft is provided with a limiting member for limiting the moving range of the impeller.

[0014] In order to facilitate the integrated installation of the water pump mechanism, the motor is fixedly connected to the base.

[0015] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a cleaning machine, including a box body, characterized in that it also includes a water pumping mechanism as mentioned above, the base of the water pumping mechanism is fixedly arranged at the bottom of the box body, and the water intake port and water return port on the base are both connected to the box body.

[0016] Simply, the water inlet is connected to the box body through a water inlet pipe;

[0017] The water return port is connected with the box body through a water return pipe.

[0018] Simply, the drain port is connected to the box body through a drain pipe.

[0019] Preferably, a drain area is recessed at the bottom of the box body, and the water intake port and the water return port on the base are both connected to the drain area of ​​the box body.

[0020] Compared with the prior art, the advantages of the utility model are: the water pumping mechanism in the utility model is only provided with one impeller, and based on the movable setting mode of the impeller relative to the motor output shaft, when the motor is working based on different directions and rotations, the position of the impeller relative to the motor output shaft is different, and then the water pumping and drainage are realized by coordinating the positions and openings of the water inlet and the water outlet, that is, the water pumping and drainage can be realized simultaneously through one motor and one impeller, and the structure is simpler. When the cleaning machine using the water pumping mechanism is working, the motor only needs to drive one impeller to rotate, the energy consumption is low, and there are more corresponding motor models to choose from, which is conducive to reducing the cost of the motor. At the same time, based on the simplification of the impeller and the overall structure, the structural cost is lower. At the same time, the water pumping mechanism has a simple structure and is more convenient to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the water pumping mechanism in the embodiment of the utility model.

[0022] Figure 2 It is a three-dimensional exploded view of the water pumping mechanism in the embodiment of the utility model.

[0023] Figure 3 It is a three-dimensional diagram of a cleaning machine in an embodiment of the utility model.

[0024] Figure 4 It is a cross-sectional view of a cleaning machine in an embodiment of the utility model.

[0025] Figure 5 for Figure 4 A partial enlarged view of . DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] like Figure 1 and Figure 2 As shown, the water pumping mechanism in this embodiment includes a base 1, a motor 2 and an impeller 3.

[0028] The base 1 has a cavity 11 inside, and the cavity 11 is used to hold water. The base 1 is provided with a water intake port 12 for taking water out, a water return port 13 for returning water to the cavity 11, and a water discharge port 14 for discharging water out.

[0029] The output shaft 20 of the motor 2 extends into the cavity 11 of the base 1, and the impeller 3 is sleeved on the output shaft 20 of the motor 2 and can move up and down along the output shaft 20 of the motor 2 based on the forward and reverse rotation of the motor 2. The impeller 3 in this embodiment is connected to the output shaft 20 of the motor 2 by a threaded connection, that is, a thread is formed on the output shaft 20 of the motor 2, and a matching thread is also matched on the inner circumferential wall of the impeller 3. In this embodiment, the impeller 3 is connected to the output shaft 20 of the motor 2 by a positive thread, and this thread connection is a clearance fit with very small friction. Then, based on the forward and reverse rotation of the motor 2, the output shaft 20 of the motor 2 drives the impeller 3 to rotate to the upper end of the output shaft 20 of the motor 2, and can also rotate to the lower end of the output shaft 20 of the motor 2. Of course, the impeller 3 can also fall to the lower end of the output shaft 20 of the motor 2 under the action of its own gravity.

[0030] In order to limit the moving range of the impeller 3 on the output of the motor 2, a limiting member 21 is provided at the outer end of the output shaft 20 of the motor 2, which is provided with a limiting member 21 for limiting the moving range of the impeller 3. The limiting member 21 is specifically set as needed, such as a convex block convexly provided on the output shaft 20 of the motor 2. In this embodiment, the limiting member 21 is a plate body, and the specific connection position of the plate body on the outer end of the output shaft 20 of the motor 2 is set according to the specific moving range. In this embodiment, in order to make full use of the space and minimize the occupied space during installation, the limiting member 21 in this embodiment is set at the top end of the output shaft 20 of the motor 2.

[0031] In order to achieve both water intake and water discharge, the water intake port 12 and the water discharge port 14 are set at different heights, and the movement range of the corresponding impeller 3 on the output shaft 20 of the motor 2 is limited to the height difference between the water intake port 12 and the water discharge port 14. In this way, when the output shaft 20 of the motor 2 drives the impeller 3 to rotate to the water intake port 12, as the motor 2 drives the impeller 3 to rotate, the water in the cavity 11 of the base 1 can be drawn out through the water intake port 12. When the output shaft 20 of the motor 2 drives the impeller 3 to rotate to the water discharge port 14, as the motor 2 drives the impeller 3 to rotate, the water in the cavity 11 of the base 1 can be discharged out through the water discharge port 14.

[0032] Due to the dead weight of water, the drain port 14 is usually set below the water intake port 12 to facilitate drainage. Based on this, in this embodiment, the water intake port 12 is opened at the upper part of the side wall of the base 1 and is connected to the cavity 11, the water return port 13 is opened at the middle part of the side wall of the base 1 and is connected to the cavity 11, and the drain port 14 is opened at the bottom of the base 1 and is connected to the cavity 11. Since the impeller 3 is driven by the motor 2 to rotate, its force is radially outward. Therefore, in order to improve the drainage efficiency and speed up the drainage speed, the drain port 14 is opened at the bottom of the side wall of the base 1.

[0033] In addition, the motor 2 in this embodiment is fixedly connected to the base 1, so that the base 1, the motor 2, and the impeller 3 form an integrated component, thereby facilitating the integrated installation of the water pump mechanism on the application product, and the installation is easier.

[0034] The water pump mechanism in the utility model is only provided with one impeller 3. Based on the movable setting mode of the impeller 3 relative to the output shaft 20 of the motor 2, when the motor 2 rotates based on different directions, the position of the impeller 3 relative to the output shaft 20 of the motor 2 is different, and then the position and opening and closing of the water intake port 12 and the water discharge port 14 are coordinated to realize water intake and water discharge. That is, water intake and water discharge can be realized simultaneously through one motor 2 and one impeller 3, the structure is simpler, and the assembly is more convenient.

[0035] The water pumping mechanism can be applied to various application products that require water pumping and drainage. In this embodiment, the water pumping mechanism is arranged in a cleaning machine.

[0036] like Figures 3 to 5 As shown, the cleaning machine includes a housing 4 and a water pumping mechanism as described above. The bottom of the housing 4 is recessed with a drainage area 40, the base 1 in the water pumping mechanism is fixedly arranged at the bottom of the housing 4, and the motor 2 is fixedly connected to the lower surface of the base 1. The water intake port 12 and the water return port 13 on the base 1 are both connected to the drainage area 40 of the housing 4. Specifically, the water intake port 12 is connected to the housing 4 through a water intake pipe 41, the water return port 13 is connected to the housing 4 through a water return pipe 42, and the water discharge port 14 is connected to the housing 4 through a water discharge pipe 43. In this embodiment, the water intake port 12, the water return port 13, and the water discharge port 14 are respectively opened from top to bottom on the base 1. In order to avoid drainage when it is not necessary, the water discharge pipe 43 can be hung upward.

[0037] When the cleaning machine is not running, the impeller 3 is at the bottom of the output shaft 20 of the motor 2 due to its own gravity. When the water is fully in the box 4, a part of the water will enter the cavity 11 of the base 1 through the return pipe 42 and the return port 13 due to its own weight, and enter the cavity 11 of the base 1, so that the cavity 11 of the base 1 is filled with water. When spray cleaning is required, the motor 2 is controlled to reverse. When the motor 2 reverses, since the output shaft 20 of the motor 2 and the impeller 3 are connected by a positive thread, the impeller 3 will quickly rise to the limiter 21 at the upper end of the output shaft 20 of the motor 2 and reach the same speed as the output shaft 20 of the motor 2. At this time, the water enters the box 4 through the water pipe 41 under the work of the impeller 3, and then the cleaning work is carried out. When the spray cleaning work is finished, it is necessary to drain water. At this time, the motor 2 is controlled to rotate forward, and the impeller 3 is quickly pulled down to the lower end of the output shaft 20 of the motor 2. Under the work of the impeller 3, the water is discharged from the cleaning machine through the drain port 14 and the drain pipe 43. That is, when the cleaning machine is working, the impeller 3 moves up and down by rotating the motor 2 forward and reversely, thereby realizing spraying, drawing water and draining water.

[0038] In the cleaning machine using the pump mechanism, when the motor 2 is working, it only needs to drive the impeller 3 to rotate, which has low energy consumption, and more corresponding motor 2 models can be selected, which is conducive to reducing the cost of the motor 2. At the same time, based on the simplification of the impeller 3 and the overall structure, the structural cost is lower. At the same time, the pump mechanism has a simple structure and is more convenient to assemble.

[0039] In the specification and claims of the present utility model, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A water pump mechanism, characterized in that: include A base (1) has a cavity (11) inside, and the base (1) is provided with a water intake port (12) for taking water out, a water return port (13) for returning water into the cavity (11), and a water discharge port (14) for discharging water out; A motor (2) having an output shaft (20) extending into a cavity (11) of the base (1); The impeller (3) is sleeved on the output shaft (20) of the motor (2) and can move up and down along the output shaft (20) of the motor (2) based on the forward and reverse rotation of the motor (2).

2. The water pump mechanism according to claim 1, characterized in that: The water intake port (12) is provided at the upper part of the side wall of the base (1) and is in communication with the cavity (11); the water return port (13) is provided at the middle part of the side wall of the base (1) and is in communication with the cavity (11); and the water discharge port (14) is provided at the bottom of the base (1) and is in communication with the cavity (11).

3. The water pump mechanism according to claim 2, characterized in that: The drainage port (14) is opened at the bottom of the side wall of the base (1).

4. The water pump mechanism according to any one of claims 1 to 3, characterized in that: The impeller (3) is threadedly connected to the output shaft (20) of the motor (2).

5. The water pump mechanism according to claim 4, characterized in that: The outer end of the output shaft (20) of the motor (2) is provided with a limiting member (21) which is provided with a position limiting the moving range of the impeller (3).

6. The water pump mechanism according to any one of claims 1 to 3, characterized in that: The motor (2) is fixedly connected to the base (1).

7. A cleaning machine, comprising a housing (4), characterized in that: It also includes a water pumping mechanism as described in any one of claims 1 to 6, wherein the base (1) in the water pumping mechanism is fixedly arranged at the bottom of the box body (4), and the water intake port (12) and the water return port (13) on the base (1) are both connected to the box body (4).

8. The cleaning machine according to claim 7, characterized in that: The water inlet (12) is connected to the box (4) through a water inlet pipe (41); The water return port (13) is connected to the box body (4) through a water return pipe (42).

9. The cleaning machine according to claim 8, characterized in that: The drainage port (14) is connected to the box body (4) via a drainage pipe (43).

10. The cleaning machine according to any one of claims 7 to 9, characterized in that: The bottom of the box body (4) is provided with a drain area (40) in a concave shape, and the water intake port (12) and the water return port (13) on the base (1) are both connected to the drain area (40) of the box body (4).

Images