A cleaning machine

Abstract

The present invention relates to a cleaning machine, comprising a sink body with a washing chamber, the top of the sink body having a shelf that can be placed on a cabinet countertop, a metal assembly frame and a sealing ring, the sink body is made of plastic, the shelf of the sink body is supported on the cabinet countertop by the metal assembly frame, and the sealing ring is arranged around the open edge and clamped between the shelf and the metal assembly frame. The present invention makes the sink body of plastic, which has strong plasticity, is convenient for deepening the depth of the sink body as needed, and also greatly reduces the production cost; the present invention uses a metal assembly frame to install the sink body on the cabinet countertop, solves the problem of small bearing capacity of the shelf of the plastic sink body, and improves the stability of the installation of the sink body; at the same time, the present invention also arranges a sealing ring between the metal assembly frame and the open edge of the plastic sink body, solves the sealing problem between the metal assembly frame and the plastic sink body, and improves the overall sealing of the sink cleaning machine.

Description

Technical Field

[0001] The invention relates to a kitchen appliance, in particular to a washing machine for washing dishes, vegetables or fruits. Background Art

[0002] As people's living standards continue to improve, dishwashers, as a kitchen appliance, are increasingly entering households. Dishwashers on the market are generally divided into three types: tabletop, cabinet, and tank. Among them, tabletop 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] At present, the structure of the relatively mature water tank type cleaning machine on the market is mainly as described in the Chinese patent "Water Tank Type Cleaning Machine" (application number: CN201310750968.1) with the authorization announcement number CN104224074B, that is, it includes a box body forming a washing space, the box body includes a water tank body and a cover plate rotatably connected to the water tank body, the bottom of the water tank body has a concave drain area at least in the central part, and the drain area is provided with a water pump that pumps the water in the drain area out 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. By setting a drain area covered with a drain plate and setting the water pump in the drain area, the water pump is isolated from the washing area, so that the water flowing back into the water pump is first filtered by the drain plate.

[0004] The sink body of the above-mentioned existing sink-type cleaning machine is made of stainless steel material, and the processing methods are mainly welding and drawing. Among them, for the welding process, due to the large welding deformation of stainless steel materials, it is difficult to control the dimensional accuracy of the sink, which limits the overall shape of the sink body, resulting in a single structure of the sink body, which in turn restricts the development of more functional structures of the sink-type cleaning machine. In addition, the welding process has extremely high requirements for the welding mold, low welding efficiency and high cost; for the drawing process, the deformation limit of the stainless steel material directly limits the drawing depth of the sink. The sink drawn by the drawing process generally has a depth less than the opening width of the sink. At present, it is difficult for the processes around the world to achieve a drawing depth greater than the opening width of the sink body, which causes the sink to occupy a larger installation space in the kitchen during installation and greatly limits the washing space of the sink. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a cleaning machine which adopts a tank body combining plastic and metal so as to deepen the tank body and reduce the production cost in view of the current status of the prior art.

[0006] Another technical problem to be solved by the present invention is to provide a cleaning machine capable of improving the sealing performance of a plastic tank body in view of the current status of the prior art.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a cleaning machine, including a sink body with a washing chamber, the top of the sink body has an opening connected to the washing chamber, the edge of the opening extends outward to form a shelf that can be placed on the cabinet countertop, characterized in that: it also includes a metal assembly frame and a sealing ring, the sink body is made of plastic, the shelf of the sink body is supported on the cabinet countertop by the metal assembly frame, and the sealing ring is arranged around the edge of the opening and clamped between the shelf and the metal assembly frame.

[0008] In the above scheme, the cleaning machine also includes a metal support member that can lift the bottom of the sink body and connect it to the metal assembly frame. Preferably, the metal support member has a U-shaped body and support plates extending outward from both ends of the U-shaped body, the U-shaped body surrounds the outer periphery of the sink body, the two ends of the U-shaped body are arranged near the lower edge of the shelf, and the support plate is connected to the metal assembly frame and supported on the cabinet countertop. The load-bearing capacity of the plastic sink body is an important problem that needs to be solved, because the cleaning process of the cleaning machine requires alternating hot and cold water for cleaning, which will accelerate the aging of the sink body. If the weight is completely supported on the shelf, there will be a greater risk of cracking after long-term use. By adopting the above structure, the weight of the sink is transferred to the metal support member, which solves the load-bearing problem of the sink body and improves the safety and stability of the cleaning machine; at the same time, the U-shaped body surrounding the outer periphery of the sink body can also prevent the sink body from being deformed by cold and hot water, control the deformation direction of the sink body, and reduce vibration.

[0009] Preferably, the portion of the metal assembly frame near the shelf is sunken to form a support plate for supporting the shelf, and the sealing ring is clamped between the lower wall surface of the shelf and the upper wall surface of the support plate. When the assembly is completed, the support plate is located between the lower wall surface of the sealing ring and the cabinet countertop. Since there is inevitably a gap between the plastic sink body and the metal assembly frame, the provision of the sealing ring solves the problem of sealing between the plastic sink body and the metal assembly frame.

[0010] Preferably, the outer edge of the metal assembly frame is formed into an inverted first U-shaped structure, and in the assembled state, the upper wall surface of the first U-shaped structure is higher than the upper wall surface of the shelf to form a space for installing the door body of the cleaning machine. This structure is conducive to improving the sealing effect of the door body.

[0011] Preferably, the support plate is supported on the lower wall of the support plate, and the shelf, sealing ring, support plate and support plate are provided with corresponding mounting holes for screws to pass through and lock. This structure is not only convenient to install, but also has good reliability and stability after installation.

[0012] Preferably, the metal assembly frame includes a frame body and a connecting plate, the frame body is arranged around the outer periphery of the opening of the water tank body, the connecting plate is connected to the middle part of the frame body and extends downward, the connecting plate has a horizontally bent folding plate, the folding plate abuts against the support plate and is connected to the support plate by screws, and the folding plate and the support plate are correspondingly provided with mounting holes for the screws to pass through. The part of the metal assembly frame close to the shelf is sunken to form a mounting plate for mounting the door body of the washing machine, the outer edge of the metal assembly frame is formed into an inverted second U-shaped structure, the upper end of the connecting plate is connected to the inner wall of the second U-shaped structure close to the opening, and the outer edge of the support plate is bent upward to form a fixing plate that can be connected to the inner wall of the second U-shaped structure away from the opening. This structure reasonably connects the metal support and the metal assembly frame together, thereby improving the installation convenience and stability of the water tank body.

[0013] Preferably, the sealing ring has a gasket clamped between the lower wall of the mounting plate and the upper wall of the shelf, the outer edge of the gasket is formed with a U-shaped groove that can surround the edge of the shelf, and the inner edge of the gasket is formed with a retaining ring that can prevent water from flowing up. Since there is an inevitable gap between the plastic water tank body and the metal assembly frame, the provision of the sealing ring can not only solve the problem of sealing between the plastic water tank body and the metal assembly frame to prevent water overflow during the use of the cleaning machine, but the provision of the retaining ring can also weaken the upward force of the water flow, thereby reducing the requirements for the sealing of the door body of the cleaning machine, which is conducive to improving the sealing effect of the door body.

[0014] In order to improve the sealing performance, the connection between the lower part of the retaining ring and the gasket forms an assembly groove that can fit tightly around the open edge, and the connection between the upper part of the retaining ring and the gasket forms a step that can fit tightly with the inner edge of the mounting plate.

[0015] In order to better prevent water from surging, the upper part of the inner side wall of the retaining ring gradually tilts outward from top to bottom to form a first inclined surface, the middle part of the inner side wall of the retaining ring is formed with a plane extending up and down, and the lower part of the inner side wall of the retaining ring gradually tilts outward from top to bottom to form a second inclined surface. The height of the second inclined surface is greater than the height of the first inclined surface, and the angle between the first inclined surface and the opening is smaller than the angle between the second inclined surface and the opening.

[0016] Preferably, the outer periphery of at least the lower part of the water tank body is formed with reinforcing ribs arranged around the bottom wall and side walls of the water tank body. During the washing process of the washing machine, hot water and cold water are often required for alternating washing, and the deformation degree caused by cold water and hot water on the plastic tank body is different. When hot water is used for washing, the hot steam rises to the upper part of the water tank body, while when cold water is used for washing, the cold water is generally located at the bottom of the water tank body. Therefore, the upper part of the plastic water tank body is easily deformed by high-temperature steam, and the lower part of the water tank body is easily deformed by cold shrinkage, and the cold shrinkage deformation of the lower part of the water tank body is greater than the thermal deformation of the upper part of the water tank body. The above structure can support the water tank body and prevent the water tank body from being deformed due to cold or heat. When an ultrasonic sounding device is provided at the bottom of the water tank body, since the ultrasonic wave needs to be transmitted through water as a medium, the reinforcing ribs at the bottom of the water tank body are conducive to the transmission of the ultrasonic wave, thereby improving the cleaning effect.

[0017] As an improvement, an ultrasonic generator is provided at the bottom of the water tank body, a metal strip is embedded in the reinforcing rib, and the metal strip is exposed on the inner wall surface of the water tank body. Since the cold shrinkage deformation of the lower part of the water tank body has a greater impact on the water tank than the thermal deformation of the upper part of the water tank body, the above structure is adopted to embed a metal strip in the reinforcing rib at the lower part of the water tank body, which can improve the support force of the lower part of the water tank body and prevent the lower part of the water tank body from internal deformation due to cold shrinkage; at the same time, the above metal strip can resonate with the ultrasonic generator to further enhance the ultrasonic cleaning effect.

[0018] Preferably, the metal support is formed with a reinforcing strip extending along the length direction of the metal support. There are at least two metal support members symmetrically arranged on both sides of the water tank body to improve the installation stability of the water tank body and evenly and effectively control the deformation direction of the water tank body.

[0019] Compared with the prior art, the advantages of the present invention are as follows: the present invention uses plastic to manufacture the sink body, which has strong plasticity, is convenient for deepening the sink body as needed, and also greatly reduces the production cost; the present invention uses a metal assembly frame to install the sink body on the cabinet countertop, which solves the problem of small bearing capacity of the shelf of the plastic sink body and improves the stability of the installation of the sink body; at the same time, the present invention also arranges a sealing ring between the metal assembly frame and the open edge of the plastic sink body, which solves the sealing problem between the metal assembly frame and the plastic sink body and improves the overall sealing of the sink cleaning machine.

[0020] The lower part of the metal support is supported on the bottom of the sink body, and the upper part of the metal support is connected to the metal assembly frame, so that the metal support has a restraining effect on the overall shape of the sink body, which can prevent the sink body from being deformed by heat or cold, and reduce the vibration of the plastic sink body caused by the impact of water flow during cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0023] Figure 3 for Figure 1 Exploded diagram of

[0024] Figure 4 for Figure 1 A cross-sectional view of

[0025] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part A;

[0026] Figure 6 for Figure 5 Cross-section of the middle retaining ring;

[0027] Figure 7 This is a partial structural diagram of Embodiment 2 of the present invention;

[0028] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of part B;

[0029] Fig. 9 for Figure 7 Exploded diagram of . DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings.

[0031] Embodiment 1:

[0032] like Figures 1 to 6 As shown, the washing machine of this embodiment is a water tank type washing machine, comprising a water tank body 1 having a washing cavity 10, the water tank body 1 needs to be installed on a cabinet countertop for use, and the cabinet countertop is provided with an installation opening 101 for installing the water tank body 1. The top of the water tank body 1 has an opening 11 connected to the washing cavity 10, and the edge of the opening 11 extends outward to form a shelf 12 that can be placed on the cabinet countertop.

[0033] The bottom of the water tank body 1 of this embodiment is provided with a water pump 5 which can lift water from the bottom of the water tank body 1 and spray it upward through the spray arm. The bottom of the water tank body 1 is provided with an ultrasonic generator 4, which can effectively improve the cleaning effect.

[0034] The sink body 1 of this embodiment is a plastic sink body. Considering that the shelf 12 of the plastic sink body 1 has a low load-bearing capacity, the sink body 1 of this embodiment is installed on the cabinet countertop through a metal assembly frame 2 and a metal support 3. The metal assembly frame 2 is made of stainless steel. After installation, the metal assembly frame 2 is arranged around the outer periphery of the opening 11 of the sink body 1, the inner edge of the metal assembly frame 2 is connected to the shelf 12, and the outer edge of the metal assembly frame 2 is placed on the cabinet countertop. The lower part of the metal support 3 is supported on the bottom of the sink body 1, and the upper part of the metal support 3 is connected to the metal assembly frame 2.

[0035] Specifically, the metal support member 3 has a U-shaped body 31 and support plates 32 extending outward from both ends of the U-shaped body 31, the support plates 32 and the U-shaped body 31 are integrally formed by sheet metal material, and the U-shaped body 31 surrounds the outer periphery of the sink body 1, that is, the U-shaped body 31 holds up the sink body 1, and then the sink body 1 is supported on the cabinet countertop by the support plates 32 and the metal assembly frame 2. Both ends of the U-shaped body 31 are arranged near the lower edge of the shelf 12, the support plates 32 are connected to the edge of the metal assembly frame 2, and the support plates 32 are directly placed on the cabinet countertop. The load-bearing capacity of the plastic sink body 1 is an important issue that needs to be resolved, because the cleaning process of the washing machine requires alternating hot and cold water for cleaning, which will accelerate the aging of the sink body 1. If the weight is completely supported on the shelf 12, there will be a greater risk of breakage after long-term use. The above structure is adopted to transfer the weight of the sink body 1 to the metal support 3, which solves the load-bearing problem of the sink body 1 and improves the safety and stability of the washing machine. At the same time, the U-shaped body 31 surrounding the outer periphery of the sink body 1 can also prevent the sink body 1 from being deformed by cold and heat, control the deformation direction of the sink body 1, and reduce vibration.

[0036] The metal support 3 of this embodiment is formed with a reinforcement strip 30 extending along the length direction of the metal support 3. There are two metal support members 3 symmetrically arranged on both sides of the water tank body 1 to improve the installation stability of the water tank body 1 and evenly and effectively control the deformation direction of the water tank body.

[0037] The metal assembly frame 2 includes a frame body 21 and a connecting plate 22. The frame body 21 is arranged around the outer periphery of the opening 11 of the sink body 1. The connecting plate 22 is connected to the middle of the frame body 21 and extends downward. The connecting plate 22 has a folded plate 221 that is horizontally bent outward. The folded plate 221 rests on the upper wall surface of the support plate 32 and is connected to the support plate 32 by screws. The folded plate 221 and the support plate 32 are correspondingly provided with mounting holes 222 and 321 for the screws to pass through. The part of the frame 21 near the shelf 12 is sunken to form a mounting plate 211 for mounting the cleaning machine door 6, the outer edge of the frame 21 is formed into an inverted second U-shaped structure 212, the upper end of the connecting plate 22 is connected to the inner wall of the second U-shaped structure 212 near the opening 11, the outer edge of the support plate 32 is bent upward to form a fixing plate 322 that can be connected to the inner wall of the second U-shaped structure 212 away from the opening 11, and the fixing plate 322 is fixedly connected to the inner wall of the second U-shaped structure 212 away from the opening 11 by screws. This structure reasonably connects the metal support 3 and the metal assembly frame 2 together, improving the installation convenience and stability of the water tank body 1.

[0038] A sealing ring 7 arranged around the opening 11 is provided between the mounting plate 22 and the shelf 12. The sealing ring 7 has a gasket 71 clamped between the lower wall of the mounting plate 22 and the upper wall of the shelf 12. The outer edge of the gasket 71 is formed with a U-shaped groove 72 that can surround the edge of the shelf 12. The inner edge of the gasket 71 is formed with a retaining ring 73 that can prevent water from surging. The gasket 71, the U-shaped groove 72, and the retaining ring 73 are integrally formed of elastic materials such as rubber and silicone. Due to the inevitable gap between the plastic water tank body 1 and the metal assembly frame 2, the provision of the sealing ring 7 can not only solve the problem of sealing between the plastic water tank body 1 and the metal assembly frame 2, and prevent water from overflowing during the use of the cleaning machine, but the provision of the retaining ring 73 can also weaken the upwelling force of the water flow, thereby reducing the sealing requirements of the door body 6 of the cleaning machine, which is conducive to improving the sealing effect of the door body 6. In order to improve the sealing performance, the connection between the lower part of the retaining ring 73 and the gasket 71 forms a fitting groove 74 that can fit tightly around the edge of the opening 11, and the connection between the upper part of the retaining ring 73 and the gasket 71 forms a step 75 that can fit tightly with the inner edge of the mounting plate 22. In order to better prevent water from surging, the upper part of the inner side wall of the retaining ring 73 gradually tilts outward from top to bottom to form a first inclined surface 731, the middle part of the inner side wall of the retaining ring 73 is formed with a plane 732 extending up and down, and the lower part of the inner side wall of the retaining ring 73 gradually tilts outward from top to bottom to form a second inclined surface 733. The height of the second inclined surface 733 is greater than the height of the first inclined surface 731, and the angle a between the first inclined surface 731 and the opening 11 is smaller than the angle between the second inclined surface 733 and the opening 11.

[0039] In this embodiment, at least the outer periphery of the lower part of the water tank body 1 is formed with reinforcing ribs 8 arranged around the bottom wall and side walls of the water tank body 1. During the washing process of the washing machine, hot water and cold water are often required for alternating washing, and the deformation degree caused by cold water and hot water on the plastic tank body is different. When hot water is used for washing, the hot steam rises and is located at the upper part of the water tank body, while when cold water is used for washing, the cold water is generally located at the bottom of the water tank body. Therefore, the upper part of the plastic water tank body is easily deformed by high-temperature steam, and the lower part of the water tank body is easily deformed by cold shrinkage, and the cold shrinkage deformation of the lower part of the water tank body is greater than the thermal deformation of the upper part of the water tank body. The above structure can support the water tank body and prevent the water tank body from being deformed due to cold or heat. When the ultrasonic sounding device 4 is set at the bottom of the water tank body 1, since the ultrasonic wave needs to be transmitted through water as a medium, the reinforcing ribs 8 at the bottom of the water tank body 1 are conducive to the propagation of the ultrasonic wave, thereby improving the cleaning effect. The above reinforcing ribs 8 are embedded with metal strips 9, and the metal strips 9 are exposed on the inner wall surface of the water tank body 1. Since the cold shrinkage deformation of the lower part of the sink body 1 has a greater impact on the sink than the thermal deformation of the upper part of the sink body 1, the above structure is adopted to embed a metal strip 9 in the reinforcing rib 8 at the lower part of the sink body 1, which can improve the supporting force of the lower part of the sink body 1 and prevent the lower part of the sink body 1 from internal deformation due to cold shrinkage; at the same time, the above metal strip 9 can resonate with the ultrasonic sounding device 4 to further enhance the ultrasonic cleaning effect.

[0040] Embodiment 2:

[0041] The difference between this embodiment and embodiment 1 is that the structure of the sealing ring and the assembly relationship between the sealing ring and the metal assembly frame in this embodiment are different from those in embodiment 1. Accordingly, the structure of the metal assembly frame is also changed.

[0042] like Figure 7 , 8As shown in Figures 9 and 10, specifically, the portion of the metal assembly frame 2' in this embodiment close to the shelf 12 is sunken to form a support plate 21' for supporting the shelf 12, and the sealing ring 7' is clamped between the lower wall of the shelf 12 and the upper wall of the support plate 21'. When the assembly is completed, the support plate 21' is located between the lower wall of the sealing ring 7' and the cabinet countertop. Since there is inevitably a gap between the plastic sink body 1 and the metal assembly frame 2', the provision of the sealing ring 7' solves the problem of sealing between the plastic sink body 1 and the metal assembly frame 2'. The outer edge of the metal assembly frame 2' is formed into an inverted first U-shaped structure 22'. When the assembly is completed, the upper wall of the first U-shaped structure 22' is higher than the upper wall of the shelf 12, thereby forming a space for installing the cleaning machine door body 6. This structure is conducive to improving the sealing effect of the door body 6. The support plate 32 is supported on the lower wall of the support plate 21', and the shelf 12, the sealing ring 7', the support plate 21', and the support plate 32 are provided with mounting holes 120, 71', 211', 320 for screws 100 to pass through and lock. This structure is not only convenient to install, but also has good reliability and stability after installation.

Claims

1. A washing machine, comprising a sink body (1) having a washing chamber (10), the top of the sink body (1) having an opening (11) communicating with the washing chamber (10), the edge of the opening (11) extending outward to form a shelf (12) that can be placed on a cabinet countertop, characterized in that: It also comprises a metal assembly frame (2) and a sealing ring (7), the sink body (1) is made of plastic material, the shelf (12) of the sink body (1) is supported on the cabinet countertop through the metal assembly frame (2), and the sealing ring (7) is arranged around the edge of the opening (11) and clamped between the shelf (12) and the metal assembly frame (2); It also includes a metal support member (3) capable of lifting the bottom of the sink body (1) and connecting it to the metal assembly frame (2); the metal support member (3) comprises a U-shaped body (31) and support plates (32) extending outward from both ends of the U-shaped body (31); the U-shaped body (31) surrounds the outer periphery of the sink body (1); both ends of the U-shaped body (31) are arranged close to the lower edge of the shelf (12); the support plate (32) is connected to the metal assembly frame (2) and supported on the cabinet countertop; The outer periphery of at least the lower portion of the water tank body (1) is formed with reinforcing ribs (8) arranged around the bottom wall and side walls of the water tank body (1); an ultrasonic generating device (4) is provided at the bottom of the water tank body (1); a metal strip (9) is embedded in the reinforcing rib (8), and the metal strip (9) is exposed on the inner wall surface of the water tank body (1).

2. The cleaning machine according to claim 1, characterized in that: The portion of the metal assembly frame close to the shelf (12) is sunken to form a support plate for supporting the shelf (12), and the sealing ring is clamped between the lower wall surface of the shelf (12) and the upper wall surface of the support plate. In the assembled state, the support plate is located between the lower wall surface of the sealing ring and the cabinet countertop.

3. The cleaning machine according to claim 2, characterized in that: The outer edge of the metal assembly frame (2) is formed into an inverted first U-shaped structure (22'). In the assembled state, the upper wall surface of the first U-shaped structure (22') is higher than the upper wall surface of the shelf (12), thereby forming a space for installing the cleaning machine door (6).

4. The cleaning machine according to claim 2, characterized in that: The support plate (32) is supported on the lower wall surface of the support plate, and the shelf (12), the sealing ring, the support plate and the support plate (32) are provided with corresponding mounting holes for screws (100) to pass through and be locked.

5. The cleaning machine according to claim 1, characterized in that: The metal assembly frame (2) comprises a frame body (21) and a connecting plate (22); the frame body (21) is arranged around the periphery of an opening (11) of a water tank body (1); the connecting plate (22) is connected to the middle of the frame body (21) and extends downward; the connecting plate (22) has a horizontally bent folding plate (221), the folding plate (221) abuts against the supporting plate (32) and is connected to the supporting plate (32).

6. The cleaning machine according to claim 5, characterized in that: The portion of the frame (21) close to the shelf (12) is sunken to form a mounting plate (211) for mounting the cleaning machine door (6); the outer edge of the frame (21) is formed into an inverted second U-shaped structure (212); the upper end of the connecting plate (22) is connected to the inner wall of the second U-shaped structure (212) close to the opening (11); the outer edge of the supporting plate (32) is bent upward to form a fixing plate (322) that can be connected to the inner wall of the second U-shaped structure (212) away from the opening (11).

7. The cleaning machine according to claim 6, characterized in that: The sealing ring (7) comprises a gasket (71) clamped between the lower wall surface of the mounting plate (211) and the upper wall surface of the shelf (12); the outer edge of the gasket (71) is formed with a U-shaped groove (72) capable of surrounding the edge of the shelf (12); and the inner edge of the gasket (71) is formed with a retaining ring (73) capable of preventing water from surging upward.

8. The cleaning machine according to claim 7, characterized in that: A mounting groove (74) that can fit tightly around the edge of the opening (11) is formed at the connection between the lower part of the retaining ring (73) and the gasket (71), and a step (75) that can fit tightly around the inner edge of the mounting plate (211) is formed at the connection between the upper part of the retaining ring (73) and the gasket (71).

9. The cleaning machine according to claim 8, characterized in that: The upper portion of the inner side wall of the retaining ring (73) is gradually inclined outward from top to bottom to form a first inclined surface (731), the middle portion of the inner side wall of the retaining ring (73) is formed with a plane (732) extending up and down, and the lower portion of the inner side wall of the retaining ring (73) is gradually inclined outward from top to bottom to form a second inclined surface (733).

10. The cleaning machine according to claim 9, characterized in that: The height of the second inclined surface (733) is greater than the height of the first inclined surface (731), and the angle (a) between the first inclined surface (731) and the opening (11) is smaller than the angle (b) between the second inclined surface (733) and the opening (11).

11. The cleaning machine according to any one of claims 1 to 10, characterized in that: The metal support member (3) is formed with a reinforcement strip (30) extending along the length direction of the metal support member (3).

12. The cleaning machine according to any one of claims 1 to 10, characterized in that: There are at least two metal support members (3) which are symmetrically arranged on both sides of the water tank body (1).

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