Drainage pump for cleaning machine and cleaning machine

Abstract

The utility model relates to a drainage pump for a cleaning machine, which comprises a pump shell, an impeller and a motor, the pump shell is provided with a water inlet and a water outlet, the impeller is rotatably arranged in the pump shell, the motor is used for driving the impeller to rotate, the pump shell is disc-shaped and is vertically arranged along the axial direction, and the water inlet is communicated with the water outlet. The water inlet is formed in the side wall of the pump shell and close to the bottom wall of the pump shell, the water outlet is formed in the upper portion of the side wall of the pump shell, the motor is arranged at the top of the pump shell, and a motor shaft is connected with the top of the impeller. A pump shell, an impeller and a motor of the drainage pump are sequentially arranged in the vertical direction, on the basis that the water inlet is kept lower than a water outlet, the water inlet is made to be the lowest, when the drainage pump is vertically installed at the bottom of the cleaning machine, conditions are provided for lowering a transverse drainage opening corresponding to the bottom of a residue collecting basket, and after the transverse drainage opening of the cleaning machine is lowered, the water inlet is made to be the lowest. The depth and the size of the corresponding slag collecting basket can be large, and the slag collecting effect of the slag collecting basket can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, and specifically refers to a drainage pump for a cleaning machine for cleaning tableware and fruits and vegetables, and a cleaning machine. Background Art

[0002] Generally, a drainage pump is arranged at the bottom of a dishwasher for draining water in the dishwasher.

[0003] For example, ZL 202221537174.8 "A Cleaning Machine" discloses a structure, which includes a base, a drainage valve and a drainage pump. A drainage port is opened on the base. The drainage valve is installed under the base and has a first water inlet corresponding to the drainage port and a first water outlet for water to flow out. The drainage pump is connected to the first water outlet of the drainage valve. A first connecting pipe section extending along the water flow direction is formed at the first water outlet. The drainage pump has a second water inlet corresponding to the first water outlet, and a second connecting pipe section extending along the water flow direction is provided at the second water inlet. The first connecting pipe section and the second connecting pipe section are opposite and arranged at intervals, and the two are connected through a rubber hose.

[0004] The existing drainage pumps are usually horizontally arranged at the bottom of the inner tank as in ZL 202221537174.8. Affected by the assembly structure, the water inlet cannot be made low, and the drainage port at the slag collection basket at the bottom of the inner tank needs to be connected to the water inlet of the drainage pump, which results in that the height of the slag collection basket cannot be made large, and to a certain extent, the slag collection effect is affected. Summary of the Utility Model

[0005] The first technical problem to be solved by the utility model is to provide a drainage pump for a cleaning machine that can make the water inlet low so as to provide conditions for making the slag collection basket large and improve the slag collection effect according to the current situation of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide a cleaning machine applying the above drainage pump according to the current situation of the prior art.

[0007] The technical solution adopted by the utility model to solve at least one of the above technical problems is as follows:

[0008] A drainage pump for a cleaning machine includes a pump housing, an impeller and a motor. The pump housing is provided with a water inlet and a water outlet. The impeller is rotatably arranged in the pump housing. The motor is used to drive the impeller to rotate. The pump housing is in a disc shape and is vertically arranged along the axis. The water inlet is opened on the side wall of the pump housing and is arranged close to its bottom wall. The water outlet is opened at the upper part of the side wall of the pump housing. The motor is arranged on the top of the pump housing and the motor shaft is connected to the top of the impeller.

[0009] The pump housing, impeller, and motor of the drainage pump are arranged in sequence vertically. On the basis of keeping the water inlet lower than the water outlet, the water inlet is made as low as possible. When the drainage pump is vertically installed at the bottom of the cleaning machine, it provides conditions for making the horizontal drainage port corresponding to the bottom of the slag collection basket lower. After making the horizontal drainage port of the cleaning machine lower, the depth and volume of the corresponding slag collection basket can be increased, which is beneficial to improving the slag collection effect of the slag collection basket.

[0010] Preferably, the pump housing includes an upper cavity and a lower cavity in the shape of a disc. The inner diameter of the upper cavity is larger than that of the lower cavity. The water inlet is located at the side of the lower cavity, and the water outlet is located at the side of the upper cavity.

[0011] Preferably, the impeller includes a shaft at the center and blades extending axially along the outer circumference of the shaft. The upper part of the blades extends radially along the shaft to form centrifugal blades. The lower part of the impeller is spirally twisted circumferentially on the shaft to form axial flow blades. The axial flow blades are used to pump the water in the lower cavity to the upper cavity, and the centrifugal blades are used to pressurize the water in the upper cavity circumferentially and discharge it through the water outlet.

[0012] Preferably, the connection between the centrifugal blades and the axial flow blades is smoothly transitioned, and the height of the centrifugal blades is less than the height of the upper cavity so that the smoothly transitioned part is located in the upper cavity.

[0013] Preferably, the top of the upper cavity is arranged to be open to form a top opening. The motor is supported on the top of the pump housing through a mounting bracket. The lower end of the mounting bracket has a top plate that can cover the top opening of the upper cavity. A receiving cavity extending vertically upward is formed at the central part of the top plate, and the motor is arranged in the receiving cavity.

[0014] Preferably, the lower surface of the top plate is formed into a conical surface that gradually slopes upward from the edge to the middle part, and the lower edge of the conical surface is arranged corresponding to the upper edge of the water outlet.

[0015] Preferably, a fitting sleeve with a U-shaped cross-section arranged around the outer circumference of the shaft is provided at the upper end of the shaft. A bearing for the motor shaft to pass through and rotate in cooperation with it is provided at the receiving cavity near the lower port. A sealing sleeve extending downward close to the inner wall of the receiving cavity is provided below the bearing, and at least the upper part of the fitting sleeve is inserted into the sealing sleeve.

[0016] Preferably, a shaft hole for the motor shaft to insert is opened at the central part of the shaft, and the central part of the sealing sleeve extends downward into the fitting sleeve and is arranged close to the upper end of the shaft.

[0017] Preferably, a water inlet pipe horizontally extending outward from the water inlet is provided on the first side of the pump housing, a drain pipe extending outward from the water outlet is provided on the second side of the pump housing, a base for supporting the drainage pump is provided at the bottom of the drainage pump, a first notch is formed on the first side wall of the base, a second notch is formed on the second side, a support platform located between the first notch and the second notch is formed on the upper surface of the base, the corresponding bottom wall of the pump housing surrounding the upper cavity abuts against the support platform, an installation cavity is formed by extending the inner end of the first notch towards the support platform for the corresponding pump housing part of the lower cavity to extend into and be accommodated therein, the water inlet pipe extends out from the first notch, and the drain pipe extends out from the top of the second notch.

[0018] A cleaning machine includes an inner tank and a slag collection basket. A concave water return area is provided at the bottom of the inner tank. A concave slag collection area for accommodating the slag collection basket is provided at the bottom of the water return area near the edge. A laterally extending drainage pipe is connected to the bottom of the slag collection area, and a drainage port is formed at the end of the drainage pipe. The cleaning machine further includes the above-mentioned drainage pump. The drainage pump is vertically arranged beside the bottom of the inner tank and the slag collection area, and the water inlet of the drainage pump is arranged close to the kitchen floor.

[0019] Compared with the prior art, the advantages of the present utility model are as follows: In the present utility model, the pump housing, impeller and motor of the drainage pump are vertically arranged in sequence. On the basis of keeping the water inlet lower than the water outlet, the water inlet is made to be the lowest. When the drainage pump is vertically installed at the bottom of the cleaning machine, it provides conditions for making the horizontal drainage port corresponding to the bottom of the slag collection basket lower. After making the horizontal drainage port of the cleaning machine lower, the depth and volume of the corresponding slag collection basket can be increased, which is beneficial to improving the slag collection effect of the slag collection basket. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the drainage pump according to an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 exploded view of;

[0022] Figure 3 is Figure 1 partial cross-sectional view of;

[0023] Figure 4 is a mating diagram of the drainage pump and the base;

[0024] Figure 5 is Figure 4 structural schematic diagram of the base in;

[0025] Figure 6 is an assembly diagram of the drainage pump and the water cup of the cleaning machine according to an embodiment of the present utility model. Detailed Embodiments

[0026] The following further describes the present utility model in detail with reference to the embodiments accompanied by drawings.

[0027] As Figures 1 to 6 shown, the drainage pump for a washing machine in this embodiment includes a pump housing 1, an impeller 2 and a motor 3. The pump housing 1 is provided with a water inlet 11 and a water outlet 12. The impeller 2 is rotatably arranged in the pump housing 1. The motor 3 is used to drive the impeller 2 to rotate. The pump housing 1 is in a disc shape and is arranged vertically along the axis. The water inlet 11 is opened on the side wall of the pump housing 1 and is arranged close to its bottom wall. The water outlet 12 is opened at the upper part of the side wall of the pump housing 1. The motor 3 is arranged on the top of the pump housing 1 and the motor shaft 31 is connected to the top of the impeller 2.

[0028] The pump housing 1, the impeller 2 and the motor 3 of the drainage pump are arranged in sequence vertically. On the basis of keeping the water inlet 11 lower than the water outlet 12, the water inlet 11 is made to be the lowest. When the drainage pump is vertically installed at the bottom of the washing machine, it provides conditions for making the corresponding horizontal drainage port at the bottom of the slag collection basket lower. After making the horizontal drainage port of the washing machine lower, the depth and volume of the corresponding slag collection basket can be made larger, which is beneficial to improving the slag collection effect of the slag collection basket.

[0029] The pump housing 1 includes an upper cavity 101 in a disc shape and a lower cavity 102. The inner diameter of the upper cavity 101 is larger than that of the lower cavity 102. The water inlet 11 is located at the side of the lower cavity 102, and the water outlet 12 is located at the side of the upper cavity 101. With the above structure, it meets the requirements of lower water inlet and upper water outlet.

[0030] The impeller 2 includes a shaft 21 at the center and blades 22 extending along the shaft 21 on the outer periphery of the shaft 21. The upper part of the blade 22 extends radially along the shaft 21 to form a centrifugal blade 221. The lower part of the impeller 2 is helically twisted in the circumferential direction of the shaft 21 to form an axial flow blade 222. The axial flow blade 222 is used to pump the water in the lower cavity 102 to the upper cavity 101, and the centrifugal blade 221 is used to pressurize the water in the upper cavity 101 circumferentially and discharge it through the water outlet 12. With the above structure, the water in the lower cavity 102 is sucked into the upper cavity 101 and discharged to avoid water accumulation in the lower cavity 102.

[0031] The centrifugal blade 221 and the axial flow blade 222 are smoothly transitionally connected, and the height of the centrifugal blade 221 is less than the height of the upper cavity 101 so that the smooth transition part is located in the upper cavity 101. This structure is beneficial to improving the water pumping effect upwards to avoid water accumulation in the lower cavity.

[0032] The top of the upper cavity 101 is arranged to be open, forming a top opening. The motor 3 is supported on the top of the pump housing 1 through the mounting bracket 4. The lower end of the mounting bracket 4 has a top plate 41 that can cover the top opening of the upper cavity 101. A receiving cavity 42 extending vertically upward is formed at the central part of the top plate 41, and the motor 3 is arranged in the receiving cavity 42. With the above structure, it is convenient to vertically install the motor 3 on the pump housing 1, and the installation is compact and space-saving.

[0033] The lower surface of the top plate 41 is formed into a conical surface 411 that gradually slopes upward from the edge to the middle part, and the lower edge of the conical surface 411 is arranged corresponding to the upper edge of the water outlet 12. This structure can play a role in water gathering and guiding to improve the drainage effect.

[0034] At the upper end of the shaft 21, a mounting sleeve 211 arranged around the outer periphery of the shaft 21 and having a U-shaped cross-section is provided. The receiving cavity 42 is provided with a bearing 421 at a position close to the lower port for the motor shaft 31 to pass through and rotate in cooperation with it. Below the bearing 421, a sealing sleeve 422 extending downward close to the inner wall of the receiving cavity 42 is provided, and at least the upper part of the mounting sleeve 211 is inserted into the sealing sleeve 422. The above structure is beneficial to improving the installation sealing performance between the motor 3 and the pump cavity.

[0035] A shaft hole 212 for the motor shaft 31 to insert is opened at the central part of the shaft 21, and the central part of the sealing sleeve 422 extends downward into the mounting sleeve 211 and is arranged close to the upper end of the shaft 21. This structure is beneficial to further improving the installation sealing performance between the motor 3 and the pump cavity.

[0036] On the first side of the pump housing 1, a water inlet pipe 111 extending horizontally outward from the water inlet 11 is provided. On the second side of the pump housing 1, a drain pipe 121 extending outward from the water outlet 12 is provided. A base 5 for supporting the drainage pump is provided at the bottom of the drainage pump. A first notch 51 is opened on the first side wall of the base 5, and a second notch 52 is opened on the second side. A support platform 53 is formed on the upper surface of the base 5 between the first notch 51 and the second notch 52. The bottom wall of the pump housing 1 corresponding to the periphery of the upper cavity 101 abuts against the support platform 53. The inner end of the first notch 51 extends towards the support platform 53 to form an installation bin 54 for the corresponding part of the pump housing 1 of the lower cavity 102 to penetrate into and be received therein. The water inlet pipe 111 extends out from the first notch 51, and the drain pipe 121 extends out from the top of the second notch 52. An arc-shaped ring 55 for positioning the outer periphery of the pump housing corresponding to the upper cavity is further provided on the upper surface of the support platform 53. The thickness of the above base 5 is very thin and is placed on the ground, and it can stably support the drainage pump on the ground.

[0037] The cleaning machine of this embodiment includes an inner tank and a slag collection basket 7. A water cup 6 is provided at the bottom of the inner tank. The water cup 6 has a sunken water return area 61. At the bottom of the water return area 61, a sunken slag collection area 62 for accommodating the slag collection basket 7 is provided near the edge. A laterally extending drainage pipe 63 is connected to the bottom of the slag collection area 62. The end of the drainage pipe 63 forms a drainage port 631. It also includes the above-mentioned drainage pump. The drainage pump is vertically arranged beside the slag collection area 62 of the water cup 6 at the bottom of the inner tank. The water inlet pipe 111 of the drainage pump is connected to the drainage port 631. The water inlet 11 and the water inlet pipe 111 of the drainage pump are arranged close to the kitchen floor.

[0038] In the present utility model, the pump housing 1, the impeller 2 and the motor 3 of the drainage pump are arranged in sequence vertically. On the basis of keeping the water inlet 11 lower than the water outlet 12, the water inlet 11 is made to be the lowest. When the drainage pump is vertically installed at the bottom of the cleaning machine, it provides a condition for making the lateral drainage port 631 corresponding to the bottom of the slag collection basket 7 lower. After making the lateral drainage port 631 of the cleaning machine lower, the depth and volume of the corresponding slag collection basket 7 can be increased, which is beneficial to improving the slag collection effect of the slag collection basket.

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

Claims

1. A drainage pump for a cleaning machine, comprising a pump housing (1), an impeller (2) and a motor (3), wherein the pump housing (1) is provided with a water inlet (11) and a water outlet (12), the impeller (2) is rotatably arranged in the pump housing (1), and the motor (3) is used to drive the impeller (2) to rotate, and is characterized in that: The pump casing (1) is disc-shaped and arranged vertically along the axial direction; the water inlet (11) is opened on the side wall of the pump casing (1) and arranged close to the bottom wall thereof; the water outlet (12) is opened on the upper part of the side wall of the pump casing (1); the motor (3) is arranged on the top of the pump casing (1) and the shaft of the motor (3) is connected to the top of the impeller (2).

2. The drainage pump for a cleaning machine according to claim 1, characterized in that: The pump housing (1) comprises a disc-shaped upper cavity (101) and a lower cavity (102); the inner diameter of the upper cavity (101) is larger than the inner diameter of the lower cavity (102); the water inlet (11) is located on the side of the lower cavity (102); and the water outlet (12) is located on the side of the upper cavity (101).

3. The drainage pump for a cleaning machine according to claim 2, characterized in that: The impeller (2) comprises a shaft (21) located at the center and blades (22) extending axially on the outer periphery of the shaft (21); the upper portion of the blades (22) extends radially along the shaft to form centrifugal blades (221); the lower portion of the impeller (2) is spirally twisted in the circumferential direction of the shaft to form axial flow blades (222); the axial flow blades (222) are used to pump water in the lower cavity (102) into the upper cavity (101); and the centrifugal blades (221) are used to pressurize the water in the upper cavity (101) in the circumferential direction and discharge it through the water outlet (12).

4. The drainage pump for a cleaning machine according to claim 3, characterized in that: The centrifugal blades (221) are connected to the axial flow blades (222) by a smooth transition, and the height of the centrifugal blades (221) is less than the height of the upper cavity (101) so that the smooth transition portion is located in the upper cavity (101).

5. The drainage pump for a cleaning machine according to claim 3, characterized in that: The top of the upper cavity (101) is openly arranged to form a top opening, and the motor (3) is supported on the top of the pump housing (1) through a mounting frame (4). The lower end of the mounting frame (4) has a top plate (41) that can cover the top opening of the upper cavity (101), and a receiving cavity (42) extending vertically upward is formed in the central part of the top plate (41), and the motor (3) is arranged in the receiving cavity (42).

6. The drainage pump for a cleaning machine according to claim 5, characterized in that: The lower surface of the top plate (41) is formed into a conical surface that gradually slopes upward from the edge to the middle part, and the lower edge of the conical surface is arranged corresponding to the upper edge of the water outlet (12).

7. The drainage pump for a cleaning machine according to claim 5, characterized in that: The upper end of the shaft is provided with an assembly sleeve which is arranged around the outer circumference of the shaft and has a U-shaped cross-section. The accommodating chamber (42) is provided with a bearing near the lower end thereof through which the shaft of the power supply machine (3) passes and which is rotatably matched. A sealing sleeve is provided below the bearing and extends downwardly close to the inner wall of the accommodating chamber (42). At least the upper portion of the assembly sleeve is inserted into the sealing sleeve.

8. The drainage pump for a cleaning machine according to claim 7, characterized in that: The central part of the shaft is provided with a shaft hole for inserting the shaft of the power supply machine (3), and the central part of the sealing sleeve extends downward into the assembly sleeve and is arranged close to the upper end of the shaft.

9. The drainage pump for a cleaning machine according to any one of claims 2 to 8, characterized in that: A water inlet pipe (111) extending horizontally outward from the water inlet (11) is arranged on the first side of the pump housing (1), and a drain pipe (121) extending outward from the water outlet (12) is arranged on the second side of the pump housing (1). A base (5) for supporting the drain pump is arranged at the bottom of the drain pump. The first side wall of the base (5) is provided with a first notch (51), and the second side is provided with a second notch (52). A support platform (53) located between the first notch (51) and the second notch (52) is formed on the upper surface of the base (5). The bottom wall of the pump housing (1) corresponding to the outer periphery of the upper cavity (101) abuts against the support platform (53). The inner end of the first notch (51) extends toward the support platform (53) to form an installation compartment for the pump housing (1) corresponding to the lower cavity (102) to be inserted into and accommodated therein. The water inlet pipe (111) extends out from the first notch (51), and the drain pipe extends out from the top of the second notch (52).

10. A cleaning machine, comprising an inner tank and a slag collecting basket (7), wherein a concave water return area is provided at the bottom of the inner tank, a concave slag collecting area for accommodating the slag collecting basket (7) is provided at the bottom of the water return area near the edge, a drainage pipe extending laterally is connected to the bottom of the slag collecting area, and a drainage port is formed at the end of the drainage pipe, characterized in that: It also comprises a drainage pump as claimed in any one of claims 1 to 9, wherein the drainage pump is vertically arranged at the bottom of the inner tank and beside the slag collection area, and the water inlet (11) of the drainage pump is arranged close to the kitchen floor.

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