Cleaning machine

Abstract

The utility model relates to a cleaning machine which comprises a box body and a water pumping assembly arranged in the box body, the water pumping assembly comprises an impeller and a motor used for driving the impeller to rotate, the impeller comprises an impeller shaft located in the center and a plurality of blades arranged on the periphery of the impeller shaft at intervals, and a motor shaft of the motor is matched with the impeller shaft in an inserted mode for limiting. The motor shaft is further provided with a limiting part which extends in the radial direction and is bent in the axial direction so that limiting can be formed between the limiting part and blades of the impeller. By the adoption of the structure, the motor shaft and the impeller shaft are limited in an inserted and matched mode, meanwhile, the limiting part which extends in the radial direction and is bent so as to limit impeller blades is arranged on the periphery of the motor shaft, and left-right circumferential limiting between the motor shaft and the impeller is achieved through the limiting part; therefore, the problem of limiting failure caused by assembly or long-term use in the prior art is avoided, and the connection reliability of the motor shaft and the impeller is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dish washer technical field, specifically point to a kind of for cleaning tableware, fruit and vegetable washing machine. BACKGROUND

[0002] Dishwasher has been widely used in home kitchen. The bottom of the dishwasher is generally provided with a water pump to provide power for the spray arm to form a jet water column. For example, the Chinese invention patent application "a cleaning machine and a cleaning method" (application number: CN202110871452.7) with the application publication number CN113616131A discloses a structure, which includes a box body, a spray arm, a water pumping impeller, a driving member, and a flow guide seat. The spray arm is rotatably arranged in the washing cavity. The water pumping impeller is used to pump water from the water pump at the bottom of the box body to the spray arm. The flow guide seat is arranged at the bottom of the box body, and the spray arm is constrained on the flow guide seat. The water pump used in the above-mentioned dishwasher is an open type water pump, i.e. part of the impeller is located in the spray arm and part is located in the water return area. The driving member (i.e. motor) is installed at the bottom of the dishwasher, and the motor shaft directly extends upward into the washing cavity and is connected with the impeller.

[0003] The existing impeller and motor shaft are usually connected by center D-shaped hole or waist-shaped hole limiting. The material of the impeller is relatively soft, and it is matched with the rigid stainless steel motor shaft. When the locking nut is tightened, the upper and lower positioning surfaces of the D-shaped impeller are easily deformed, which causes the impeller to move downward. During use, the motor shaft rotates at high speed, and the impeller agitates the water flow under pressure. The waist hole of the impeller is gradually aging and tends to be a circular hole, which eventually leads to the inability to limit the axial position.

[0004] Therefore, the connection structure of the motor shaft and the impeller in the existing dishwasher has poor reliability, and further improvement is needed. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem in the prior art, and provides a cleaning machine which can effectively improve the connection reliability of the motor shaft and the impeller.

[0006] The utility model adopts the following technical scheme to solve the above technical problem:

[0007] A cleaning machine includes a box body and a pump water assembly arranged in the box body. The pump water assembly includes an impeller and a motor for driving the impeller to rotate. The impeller includes a central impeller shaft and a plurality of blades arranged at intervals on the outer periphery of the impeller shaft. The motor shaft is inserted and limited with the impeller shaft. The motor shaft is also provided with a limiting portion extending radially and bending towards the axial direction, thereby forming a limiting position with the blades of the impeller.

[0008] The structure has the advantages that the motor shaft and the impeller shaft are limited in the radial direction and the circumferential direction, the motor shaft and the impeller are prevented from being disengaged, and the connection reliability of the motor shaft and the impeller is improved.

[0009] Preferably, the blades extend radially from the outer circumferential wall of the impeller shaft, and the limiting portion is limited by the side walls of the blades. The limiting portion is limited by the side walls of the blades, and the limiting effect is stable.

[0010] Preferably, the limiting portion comprises a first part extending radially outward from the outer surface of the motor shaft and a second part bent axially from the outer end of the first part, the first part is supported on the lower surface of the impeller, and the second part is inserted between the adjacent two blades and abuts against the opposite side walls of the two blades. The structure has the advantages that the first part is supported by the end surface of the bottom of the impeller, the second part extends into the gap between the adjacent blades to limit the circumferential direction, and the impeller and the motor shaft are reliably limited.

[0011] Preferably, the first part is in a Y-shaped structure, the lower end of the Y-shaped structure is connected to the motor shaft, the two upper ends of the Y-shaped structure are bent axially and extended to form a first limiting column and a second limiting column, the first limiting column abuts against the side wall of one blade, and the second limiting column abuts against the side wall of another blade. The structure has the advantages that the Y-shaped structure itself can guide the water flow, and the water flow is stable.

[0012] Preferably, the first part is located below the impeller, the second part is bent upward from the outer end of the first part, and the upper end of the second part is formed with a guide portion which is smoothly transitioned from bottom to top and gradually narrows outward. During assembly, the impeller is above and the motor shaft is below, the impeller is assembled from top to bottom, and the structure facilitates the guidance during assembly.

[0013] Preferably, the impeller shaft is provided with a shaft hole which is a D-shaped hole or a waist-shaped hole, the part of the motor shaft above the first part is formed into a limiting structure matched with the shaft hole, and the top of the impeller shaft is provided with a nut which is threadedly connected to the upper end of the first part penetrating through the impeller shaft.

[0014] Preferably, the impeller further comprises an upper cover plate and a lower cover plate, the impeller is located between the upper cover plate and the lower cover plate, the lower cover plate is formed into a ring structure, the ring structure and the motor shaft form a water suction port of the impeller, and the second part penetrates through the water suction port to limit the adjacent blades thereon.

[0015] Preferably, the pump water assembly further comprises a pump shell, the bottom of the box is provided with a concave backwater area, the pump shell is arranged in the backwater area and is provided with a water inlet at the bottom and a water outlet at the side, the impeller is rotatably arranged in the pump shell, and the motor is arranged at the outer bottom of the box and the motor shaft penetrates through the bottom wall of the box and extends into the pump shell through the water outlet and is connected with the impeller shaft.

[0016] Preferably, the box is provided with a spray arm connected with the water outlet of the pump shell.

[0017] Compared with the prior art, the utility model has the advantages that: the utility model discloses the limit part of the motor shaft outer periphery is arranged along the radial direction and is bent, and the impeller blade limit is reserved, the motor shaft and the impeller shaft are inserted and arranged, convenient assembly, the rotation concentricity of the motor shaft and the impeller is kept, the limit part realizes the circumferential limit between the motor shaft and the impeller, thereby avoiding the limit failure problem caused by assembly or long-term use in the prior art, thereby effectively improve the connection reliability of the motor shaft and the impeller. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a part structure schematic view of the utility model embodiment;

[0019] Figure 2 It is the assembly drawing of the motor and the impeller in the utility model embodiment;

[0020] Figure 3 It is Figure 2 the sectional view;

[0021] Figure 4 It is Figure 3 the local enlarged view;

[0022] Figure 5 It is the structure schematic view of the motor shaft in the utility model embodiment;

[0023] Figure 6 It is Figure 5 the plan view. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from the description herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments.

[0025] In the description of the utility model, it is understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0026] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0027] In the utility model, unless otherwise specifically defined and limited, if the terms "mounting", "connection", "connection", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the utility model, unless otherwise specifically defined and limited, if the first feature appears "on" or "under" the second feature and the like, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this invention are for illustrative purposes only and do not represent the only possible implementation.

[0030] like Figures 1-6 As shown, the cleaning machine of this embodiment includes a housing 1 and a water pump assembly 2 disposed in the housing 1. The water pump assembly 2 includes an impeller 21 and a motor 22 for driving the impeller 21 to rotate. The impeller 21 includes an impeller shaft 211 located in the center and a plurality of blades 212 arranged at intervals on the outer periphery of the impeller shaft 211. The motor shaft 221 of the motor 22 is inserted and limited to the impeller shaft 211. The motor shaft 221 is also provided with a limiting part 20 that extends radially and bends axially to form a limiting part with the blades 212 of the impeller 21.

[0031] By adopting the above structure, while retaining the insertion and limiting of the motor shaft 221 and the impeller shaft 211, a limiting part 20 is provided on the outer periphery of the motor shaft 221, which extends radially and bends to limit the blades 212 of the impeller 21. The limiting part 20 realizes the circumferential limiting of the motor shaft 221 and the impeller 21 in the left and right directions, thereby avoiding the limiting failure problem caused by assembly or long-term use in the prior art, and thus effectively improving the connection reliability of the motor shaft 221 and the impeller 21.

[0032] In this embodiment, the blade 212 extends radially from the outer peripheral wall of the impeller shaft 211, and the limiting part 20 cooperates with the side wall of the blade 212 for limiting. The limiting part 20 limits the blade 212 with the side wall, and the limiting effect is stable.

[0033] The limiting part 20 of this embodiment includes a first part 201 extending radially outward from the outer surface of the motor shaft 221 and a second part 202 bent axially from the outer end of the first part 201. The first part 201 is supported on the lower surface of the impeller 21, and the second part 202 is inserted between two adjacent blades 212 and abuts against the opposite sidewalls of the two blades 212 respectively. With the above structure, the first part 201 is supported and engaged with the bottom end face of the impeller 21, and the second part 202 extends into the gap between adjacent blades 212 of the impeller 21 to achieve lateral circumferential limiting, so as to achieve reliable limiting of the impeller 21 and the motor shaft 221.

[0034] The first part 201 of the embodiment is in a Y-shaped structure, the lower end of the Y-shaped structure is connected with the motor shaft 221, the two upper ends of the Y-shaped structure are respectively bent along the axial direction and extend to form the first limiting column 01 and the second limiting column 02, and the first limiting column 01 and the second limiting column 02 jointly constitute the second part 202. The first limiting column 01 abuts against the side wall of one blade 212, and the second limiting column 02 abuts against the side wall of another blade 212. By adopting the above structure, the Y-shaped structure itself can also guide the water flow, and has the effects of flow guiding and flow stabilizing.

[0035] The first part 201 is located below the impeller 21, the second part 202 is bent upward from the outer end of the first part 201, and the upper end of the second part 202 is formed with a guide portion 03 which is smoothly transitioned from bottom to top and gradually narrows outward. When assembling, the impeller 21 is above and the motor shaft 221 is below, the impeller 21 is assembled from top to bottom, and the above structure is adopted to facilitate the guidance during the assembly process and facilitate the assembly.

[0036] The impeller shaft 211 is provided with an axial hole 212 which is a D-shaped hole or a waist-shaped hole and is through the upper and lower portions, the portion of the motor shaft 221 above the first part 201 is formed into a limiting structure 222 matched with the axial hole 212, and the top of the impeller shaft 211 is provided with a nut 3 which can be threadedly connected with the first part 201 of the impeller shaft 211 above the upper end.

[0037] The impeller 21 further comprises an upper cover plate 213 and a lower cover plate 214, the impeller 21 is located between the upper cover plate 213 and the lower cover plate 214, the lower cover plate 214 is formed into a ring-shaped structure, the ring-shaped structure and the motor shaft 221 form a water suction port 215 of the impeller 21, and the second part 202 passes through the water suction port 215 and is limited by the adjacent blade 212 thereon.

[0038] The water pumping assembly 2 further comprises a pump shell 23, the bottom of the box body 1 is provided with a lower concave backwater area 11, the pump shell 23 is arranged in the backwater area 11 and is provided with a water inlet at the bottom and a water outlet at the side, the impeller 21 is rotatably arranged in the pump shell 23, and the motor 22 is arranged at the outer bottom of the box body 1, the motor shaft 221 passes through the bottom wall of the box body 1 and extends into the pump shell 23 through the water outlet and is connected with the impeller shaft 211.

[0039] The box body 1 is provided with a spray arm 4 connected with the water outlet of the pump shell 23.

[0040] The embodiment retains the plug-in limit of the motor shaft 221 and the impeller shaft 211, sets the limit part 20 extending radially and bending outside the motor shaft 221 to limit the impeller 21 blade 212, retains the plug-in limit of the motor shaft 221 and the impeller shaft 211, facilitates assembly, maintains the rotational concentricity of the motor shaft 221 and the impeller 21, and realizes the left and right circumferential limit between the motor shaft 221 and the impeller 21, thereby avoiding the limit failure problem caused by assembly or long-term use in the prior art, and effectively improving the connection reliability of the motor shaft 221 and the impeller 21.

[0041] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0042] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A cleaning machine comprising a tank (1) and a pump water assembly (2) arranged in the tank (1), the pump water assembly (2) comprising an impeller (21) and a motor (22) for driving the impeller (21) in rotation, characterized in that: The impeller (21) comprises a central impeller shaft (211) and a plurality of blades (212) arranged at intervals on the outer periphery of the impeller shaft (211), and the motor shaft (221) of the motor (22) is inserted into the impeller shaft (211) and is limited, and the motor shaft (221) is further provided with a limiting portion (20) extending radially and bent axially to form a limit with the blades (212) of the impeller (21).

2. The cleaning machine of claim 1, wherein: The blades (212) extend radially from the outer peripheral wall of the impeller shaft (211), and the limiting portion (20) cooperates with the side wall of the blade (212) to limit.

3. The cleaning machine of claim 2, wherein: The limiting portion (20) comprises a first portion (201) extending radially outward from the outer surface of the motor shaft (221) and a second portion (202) axially bent from the outer end of the first portion (201), the first portion (201) is supported on the lower surface of the impeller (21), and the second portion (202) is inserted between two adjacent blades (212) and abuts against the opposite side walls of the two blades (212) respectively.

4. The cleaning machine of claim 3, wherein: The first portion (201) is in Y-shaped structure, the lower end of the Y-shaped structure is connected with the motor shaft (221), and the two upper ends of the Y-shaped structure are respectively bent axially and extended to form a first limiting column and a second limiting column, the first limiting column abuts against the side wall of one blade (212), and the second limiting column abuts against the side wall of another blade (212).

5. The cleaning machine of claim 3, wherein: The first portion (201) is located below the impeller (21), the second portion (202) is bent upward from the outer end of the first portion (201), and the upper end of the second portion (202) is formed with a guide portion which is smoothly transitioned from bottom to top and gradually narrows outward.

6. The cleaning machine of claim 3, wherein: The impeller shaft (211) is provided with a shaft hole extending through the top and bottom, the shaft hole is a D-shaped hole or a waist-shaped hole, the portion of the motor shaft (221) above the first portion (201) is formed as a limiting structure matched with the shaft hole, and the top of the impeller shaft (211) is provided with a nut threadedly connected with the upper end of the first portion (201) penetrating through the impeller shaft (211).

7. The cleaning machine of claim 3, wherein: The impeller (21) further comprises an upper cover plate (213) and a lower cover plate (214), the impeller (21) is located between the upper cover plate (213) and the lower cover plate (214), the lower cover plate (214) is formed as an annular structure, the annular structure and the motor shaft (221) form a water suction port of the impeller (21), and the second portion (202) penetrates through the water suction port to limit the adjacent blade (212) thereon.

8. The cleaning machine according to any one of claims 1 to 7, characterized in that: The pump water assembly (2) further comprises a pump shell (23), the bottom of the box body (1) is provided with a concave backwater area, the pump shell (23) is arranged in the backwater area and is provided with a water inlet at the bottom and a water outlet at the side, the impeller (21) is rotatably arranged in the pump shell (23), and the motor (22) is arranged at the outer bottom of the box body (1) and the motor shaft (221) penetrates through the bottom wall of the box body (1) and extends into the pump shell (23) to be connected with the impeller shaft (211).

9. The cleaning machine of claim 8, wherein: The box body (1) is provided with a spray arm (4) connected with the water outlet of the pump shell (23).

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