Splicing method of water tank, water tank and cleaning device

Abstract

The invention relates to a water tank splicing method, a water tank and a cleaning device.The water tank comprises a plastic tank bottom and a metal vertical cylinder, the plastic tank bottom is provided with a side wall extending upwards, and the lower edge of the metal vertical cylinder and the upper edge of the side wall are in butt joint with each other and are locked and connected through a connecting assembly; the connecting assembly comprises a first U-shaped hoop which surrounds the periphery of the first part of the lower edge of the metal vertical cylinder. And the second U-shaped hoop surrounds the periphery of the second part of the lower edge of the metal vertical cylinder, and the second U-shaped hoop and the first U-shaped hoop are mutually limited to jointly form an annular structure surrounding the periphery of the metal vertical cylinder. The metal vertical cylinder can effectively reduce the wall hanging problem of water drops, and the drying efficiency and the drying effect in the washing cavity are improved; an annular structure surrounding the periphery of the water tank is formed through the two opposite U-shaped hoops, the surrounding structure is locked with the upper edge of the plastic tank bottom and the lower edge of the metal vertical cylinder through the locking pieces, the complete water tank can be obtained, and the installation structure is simple and reasonable.

Description

Technical Field

[0001] This invention relates to the field of dishwasher technology, specifically to a method for assembling a sink, the sink itself, and a cleaning device. Background Technology

[0002] Existing sink dishwashers mainly use one-piece metal tanks with uniform thickness stretching or one-piece injection molded plastic tanks. Due to process limitations, it is difficult to increase the depth and volume of such tanks.

[0003] To address this issue, ZL202321954307.6, "A Water Tank and a Cleaning Machine Using the Water Tank," discloses a structure comprising a tank body. The tank body includes a panel and a vertical cylinder arranged sequentially from top to bottom and connected to each other. The panel includes a horizontally extending plate, and the top edge of the vertical cylinder is bent outward to form a folded plate. The folded plate is located below the horizontal plate, and the two are connected by a connecting component, thereby connecting the panel and the vertical cylinder together.

[0004] The aforementioned tank increases its depth and volume by splicing a plastic vertical cylinder with a metal panel. However, the top of its screw-locking structure needs to be welded to the metal panel, which is not only complex but also prone to poor welding, affecting the reliability of the connection. In addition, since the tank is basically made of plastic, water droplets tend to stick to the inner wall of the plastic tank after washing, which greatly affects the drying efficiency and effect in the subsequent washing chamber. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a method for splicing a water tank that is simple and reasonable in structure, avoids complex welding processes, and has good connection reliability, in light of the current state of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide a water tank that can effectively reduce the problem of water sticking to the wall, thereby improving the drying efficiency and drying effect in the washing chamber, in light of the current state of the prior art.

[0007] The third technical problem to be solved by the present invention is to provide a cleaning device that uses the above-mentioned water tank, in view of the current state of the prior art.

[0008] The technical solution adopted by the present invention to solve at least one of the above-mentioned technical problems is as follows:

[0009] A method for assembling a water tank, the water tank comprising a plastic tank bottom and a metal upright, the plastic tank bottom having an upwardly extending sidewall, the lower edge of the metal upright abutting against the upper edge of the sidewall and being locked together by a connecting component; the connecting component includes:

[0010] The first U-shaped clamp surrounds the outer periphery of the first part of the lower edge of the metal vertical cylinder;

[0011] The second U-shaped clamp surrounds the second part of the lower edge of the metal vertical tube and, together with the first U-shaped clamp, limits each other to form a ring structure surrounding the metal vertical tube.

[0012] A locking component is used to lock the annular structure to the upper edge of the plastic trough bottom and the lower edge of the metal vertical cylinder.

[0013] During assembly, the first U-shaped clamp and the second U-shaped clamp are pushed into each other from opposite sides of the metal vertical cylinder by sliding until the first U-shaped clamp and the second U-shaped clamp are respectively wrapped around the lower edge of the metal vertical cylinder and the ends of the first U-shaped clamp and the second U-shaped clamp are relatively limited. Then, the first U-shaped clamp and the second U-shaped clamp are locked to the upper edge of the plastic trough bottom and the lower edge of the metal vertical cylinder by the locking member.

[0014] With the above structure, the metal upright can effectively reduce the problem of water droplets sticking to the wall, thereby improving the drying efficiency and drying effect in the washing chamber. The ring structure formed by two opposing U-shaped clamps around the outside of the water tank can be obtained by locking the ring structure to the upper edge of the plastic tank bottom and the lower edge of the metal upright with locking devices. The installation structure is simple and reasonable. The two opposing U-shaped clamps avoid complex welding processes and can strengthen the outer part of the water tank joint after connection.

[0015] A water tank, obtained using the above-described splicing method, has a first outwardly extending retaining edge on the lower edge of the metal vertical cylinder. The bottom of the first U-shaped clamp has a first sliding groove that allows it to slide from the first side of the first retaining edge to encircle the outer perimeter of a first part of the metal vertical cylinder. The bottom of the second U-shaped clamp has a second sliding groove that allows it to slide from the second side of the first retaining edge to encircle the outer perimeter of a second part of the metal vertical cylinder. With this structure, the first and second U-shaped clamps can be pushed in relative to each other from opposite sides of the metal vertical cylinder by sliding until they are respectively encircling the lower edge of the metal vertical cylinder. This design is convenient for operation and assembly.

[0016] Preferably, the ends of the first U-shaped clamp and the second U-shaped clamp are provided with a snap-fit ​​structure that can automatically engage and limit their position when they are slid into place. With this structure, when the first U-shaped clamp and the second U-shaped clamp are pushed in relative to each other from opposite sides of the metal vertical cylinder by sliding, the snap-fit ​​structure can automatically engage and limit their position the instant they are pushed in, eliminating the problem of difficulty in properly fitting the outer frame structure to the outer perimeter of the water tank in the prior art.

[0017] Preferably, the first U-shaped clamp has a first latch at its first end, and the second U-shaped clamp has a first buckle at its first end that engages with the first latch; the second U-shaped clamp has a second buckle at its second end, and the second U-shaped clamp has a second latch at its second end that engages with the second buckle. This structure makes the structures on both sides of the first and second U-shaped clamps symmetrical, meaning that the frame structures of the first and second U-shaped clamps are identical. They can be produced using a single mold, greatly reducing mold costs, simplifying the production process, and lowering production costs.

[0018] Preferably, the first U-shaped clamp includes a first supporting edge that can be placed on top of the first clamp edge and a first surrounding edge that extends downward from the periphery of the first supporting edge, the first supporting edge and the first surrounding edge together forming the first sliding groove; and / or, the second U-shaped clamp includes a second supporting edge that can be placed on top of the first clamp edge and a second surrounding edge that extends downward from the periphery of the second supporting edge, the second supporting edge and the second surrounding edge together forming the second sliding groove. This structure facilitates the forming of the first and second sliding grooves, providing convenience for the relative sliding insertion of the first and second U-shaped clamps to surround and connect the metal vertical cylinder.

[0019] Preferably, the lower end of the first and / or second perimeter forms a support platform, and the upper edge of the plastic groove bottom extends outward to form a second retaining edge that can be pressed against the support platform. The locking member is used to lock the first and / or second perimeter to the first and second retaining edges. During assembly, the metal upright is inverted, and the plastic groove bottom is installed by inverting it. This structure facilitates the support and installation of the plastic groove bottom; furthermore, screwing from the plastic groove bottom side to the metal upright side avoids the influence of other structures on screwdriver operation, making operation convenient.

[0020] Preferably, the locking element is a screw, and the first and second retaining edges are respectively provided with connecting holes for the screw to pass through. Correspondingly, the first and / or second retaining edges are respectively formed with threaded posts. With this structure, the threaded posts are designed into a low-cost component such as a U-shaped clamp. If problems such as stripping occur, the repair cost of replacing the U-shaped clamp is much lower than that of a metal vertical cylinder or a plastic trough bottom, which facilitates subsequent repair and maintenance.

[0021] Preferably, a positioning hole is provided on the first retaining edge, and correspondingly, a positioning post is provided on the first support edge and / or the second support edge, which can be engaged in the positioning hole to pre-position the first retaining edge with the corresponding clamp. Before the plastic tank bottom is joined and locked, this structure is used to pre-position the first retaining edge U-shaped clamp of the metal vertical cylinder, so that the connecting holes on the two are aligned with the threaded post, which facilitates further locking with screws after the plastic tank bottom is joined.

[0022] Preferably, a sealing gasket is also sandwiched between the first and second locking edges. The sealing gasket is also provided with corresponding connection holes and positioning holes, which helps to improve the sealing performance.

[0023] A cleaning device includes the aforementioned water tank and a cleaning tank arranged side-by-side with the water tank, wherein the top edge of the plastic tank bottom is located below the bottom of the cleaning tank. With this structure, the metal upright is higher than the cleaning tank, lowering the joint position between the plastic tank bottom and the metal upright, avoiding the gap between the water tank and the cleaning tank, providing ample assembly space, and improving assembly convenience.

[0024] Compared with the prior art, the advantages of this invention are as follows: This invention uses a plastic tank bottom and a metal vertical cylinder to form a water tank. The plastic tank bottom is easy to mold into various functional areas, and the metal vertical cylinder has a simple structure and its height can be adjusted as needed. This avoids the influence of the draft angle of the all-plastic tank on the depth and volume, making it easy to provide water tanks of various volumes with high integration and good versatility. In addition, the metal vertical cylinder can effectively reduce the problem of water droplets sticking to the wall, thereby improving the drying efficiency and drying effect in the washing chamber. This invention uses two opposing U-shaped clamps to form a ring structure around the outside of the water tank. The ring structure is locked to the upper edge of the plastic tank bottom and the lower edge of the metal vertical cylinder with locking parts to obtain a complete water tank. The installation structure is simple and reasonable. The two opposing U-shaped clamps are connected by sliding, avoiding complex welding processes. After connection, it can strengthen the outer part of the water tank splice, and the reliability of the connection is good. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the cleaning device according to an embodiment of the present invention.

[0026] Figure 2 for Figure 1 Exploded view of the middle water tank.

[0027] Figure 3 for Figure 2 Enlarged view of section A.

[0028] Figure 4 for Figure 2 Enlarged view of section B.

[0029] Figure 5 This is an assembly diagram of the metal vertical cylinder and clamp in an embodiment of the present invention.

[0030] Figure 6 for Figure 5 Enlarged view of section C.

[0031] Figure 7 for Figure 1 A sectional view.

[0032] Figure 8 for Figure 7 Enlarged view of section D. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] In the description of this invention, it should be understood that if terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] 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. Where applicable, 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.

[0039] The sink in this embodiment is used as the washing tank of a sink-type dishwasher, but it can also be used as a regular sink.

[0040] like Figure 1 As shown in Figure 8, the water tank in this embodiment includes a plastic tank bottom 1 and a metal vertical cylinder 2. The plastic tank bottom 1 has an upwardly extending sidewall 11. The lower edge of the metal vertical cylinder 2 is abutted against the upper edge of the sidewall 11 and locked together by a connecting component 3. The connecting component 3 includes:

[0041] The first U-shaped clamp 31 surrounds the outer periphery of the first part of the lower edge of the metal vertical cylinder 2;

[0042] The second U-shaped clamp 32 surrounds the second part of the lower edge of the metal vertical cylinder 2 and, together with the first U-shaped clamp 31, mutually limits each other to form a ring structure surrounding the metal vertical cylinder 2.

[0043] Locking element 33 is used to lock the annular structure to the upper edge of the plastic trough bottom 1 and the lower edge of the metal vertical cylinder 2.

[0044] With the above structure, the metal vertical cylinder 2 can effectively reduce the problem of water droplets sticking to the wall, thereby improving the drying efficiency and drying effect in the washing chamber; by forming a ring structure around the outside of the water tank through two opposing U-shaped clamps, the ring structure can be locked to the upper edge of the plastic tank bottom 1 and the lower edge of the metal vertical cylinder 2 with locking parts 33 to obtain a complete water tank. The installation structure is simple and reasonable. The two opposing U-shaped clamps avoid complex welding processes and can strengthen the outer part of the water tank splice after connection.

[0045] In this embodiment, the lower edge of the metal cylinder 2 is provided with an outwardly extending first retaining edge 21. The bottom of the first U-shaped clamp 31 has a first sliding groove 311 that can slide from the first side of the first retaining edge 21 to surround the outer periphery of the first part of the metal cylinder 2. The bottom of the second U-shaped clamp 32 has a second sliding groove 321 that can slide from the second side of the first retaining edge 21 to surround the outer periphery of the second part of the metal cylinder 2. With this structure, the first U-shaped clamp 31 and the second U-shaped clamp 32 can be pushed into each other from opposite sides of the metal cylinder 2 by sliding until the first U-shaped clamp 31 and the second U-shaped clamp 32 surround the outer periphery of the lower edge of the metal cylinder 2. This is convenient to operate and easy to assemble.

[0046] The ends of the first U-shaped clamp 31 and the second U-shaped clamp 32 are provided with snap-fit ​​structures that can automatically engage and limit their position when they slide into place. With this structure, when the first U-shaped clamp 31 and the second U-shaped clamp 32 are pushed into place from opposite sides of the metal vertical cylinder 2 by sliding, they can automatically engage and limit their position using the snap-fit ​​structures at the moment they are pushed into place, eliminating the problem of difficulty in properly fitting the outer frame structure to the outer perimeter of the water tank in the prior art.

[0047] The first U-shaped clamp 31 has a first latch 01 at its first end, and the second U-shaped clamp 32 has a first buckle 011 at its first end that can engage with the first latch 01. The second U-shaped clamp 31 has a second buckle 021 at its second end, and the second U-shaped clamp 32 has a second latch 02 at its second end that can engage with the second buckle 021. The first latch 01, the first buckle 011, the second latch 02, and the second buckle 021 together constitute a buckle structure. This structure makes the structures on both sides of the first U-shaped clamp 31 and the second U-shaped clamp 32 symmetrical, meaning that the frame structures of the first U-shaped clamp 31 and the second U-shaped clamp 32 are identical. They can be produced using a single mold, greatly reducing mold costs, simplifying the production process, and lowering production costs.

[0048] In this embodiment, the first U-shaped clamp 31 includes a first supporting edge 10 that can be placed on top of the first clamping edge 21 and a first surrounding edge 100 that is located around the first supporting edge 10 and extends downward. The first supporting edge 10 and the first surrounding edge 100 together form a first sliding groove 311. The second U-shaped clamp 32 includes a second supporting edge 20 that can be placed on top of the first clamping edge 21 and a second surrounding edge 200 that is located around the second supporting edge 20 and extends downward. The second supporting edge 20 and the second surrounding edge 200 together form a second sliding groove 321. With the above structure, it is easy to form the first sliding groove 311 and the second sliding groove 321, which facilitates the relative sliding and pushing of the first U-shaped clamp 31 and the second U-shaped clamp 32 to surround and connect the metal vertical cylinder 2.

[0049] The lower ends of the first perimeter 100 and the second perimeter 200 form a support platform 001. The upper edge of the plastic groove bottom 1 extends outward to form a second retaining edge 12 that can be pressed against the support platform 001. The locking member 33 is used to lock the first perimeter 100 and the second perimeter 200 to the first retaining edge 21 and the second retaining edge 12. During assembly, the metal vertical cylinder 2 is inverted, and the plastic groove bottom 1 is installed by inverting. The above structure facilitates the support and installation of the plastic groove bottom 1. Furthermore, screws are driven from one side of the plastic groove bottom 1 to the other side of the metal vertical cylinder 2, avoiding the influence of other structures on the screwdriver operation, making the operation convenient.

[0050] In this embodiment, the locking element 33 is a screw. The first retaining edge 21 and the second retaining edge 12 are respectively provided with connecting holes 1a for the screw to pass through. Correspondingly, threaded posts 1b are formed on the first surrounding edge 100 and / or the second surrounding edge 200. With this structure, the threaded posts 1b are designed onto a low-cost component like a U-shaped clamp. If problems such as stripping occur, the repair cost of replacing the U-shaped clamp is far lower than that of the metal vertical cylinder 2 or the plastic groove bottom 1, facilitating subsequent repair and maintenance.

[0051] The first retaining edge 21 is provided with a positioning hole 1c. Correspondingly, the first supporting edge 10 and the second supporting edge 20 are provided with positioning posts 1d that can be locked in the positioning hole 1c to pre-position the first retaining edge 21 with the corresponding clamp. Before the plastic tank bottom 1 is connected and locked, this structure is used to pre-position the first retaining edge 21 and the U-shaped clamp of the metal vertical cylinder 2, so that the connecting hole 1a on them is aligned with the threaded post 1b, which facilitates further locking with screws after the plastic tank bottom 1 is connected.

[0052] In this embodiment, a sealing gasket 4 is also held between the first retaining edge 21 and the second retaining edge 12. The sealing gasket 4 is also provided with corresponding connecting holes 1a and positioning holes 1c, which helps to improve the sealing performance.

[0053] In this embodiment, the method for assembling the water tank is as follows:

[0054] The water tank is installed in an inverted manner, with the metal vertical cylinder 2 at the bottom and its lower edge facing upwards. First, the first U-shaped clamp 31 and the second U-shaped clamp 32 are pushed into the metal vertical cylinder 2 from opposite sides through the first and second sliding grooves, respectively, until they encircle the lower edge of the metal vertical cylinder 2. At the instant the first U-shaped clamp 31 and the second U-shaped clamp 32 slide into place, their ends engage with the locking mechanism to achieve relative positioning. At this point, the first... The first U-shaped clamp 31 and the second U-shaped clamp 32 also achieve the pre-positioning of the connecting hole 1a through the positioning post 1d; the sealing gasket 4 is placed in the first slide groove and the second slide groove; the plastic tank bottom 1 is upside down on the first U-shaped clamp 31 and the second U-shaped clamp 32, so that the corresponding connecting holes 1a on the first clamp edge 21 and the second clamp edge 12 are aligned, and then the screws are inserted from top to bottom into the first U-shaped clamp 31, the second U-shaped clamp 32, the upper edge of the plastic tank bottom 1, and the lower edge of the metal cylinder 2 in each connecting hole, thus completing the splicing of the water tank.

[0055] The cleaning device of this embodiment includes the aforementioned water tank, and also includes a cleaning tank 5 arranged side by side with the water tank. The top edge of the plastic tank bottom 1 is located below the bottom of the cleaning tank 5. With this structure, the metal cylinder 2 is higher than the cleaning tank 5, which lowers the splicing position between the plastic tank bottom 1 and the metal cylinder 2, avoiding the gap between the water tank and the cleaning tank 5, providing a larger assembly space and improving assembly convenience.

[0056] This embodiment uses a plastic tank bottom 1 and a metal vertical cylinder 2 to form a water tank. The plastic tank bottom 1 is easy to mold into various functional areas, and the metal vertical cylinder 2 has a simple structure and its height can be adjusted as needed. This avoids the influence of the draft angle of the all-plastic tank on the depth and volume, making it easy to provide water tanks of various volumes with high integration and good versatility. In addition, the metal vertical cylinder 2 can effectively reduce the problem of water droplets sticking to the wall, thereby improving the drying efficiency and drying effect in the washing chamber. In this embodiment, two opposing U-shaped clamps form a ring structure around the outside of the water tank. The locking parts 33 are used to lock the ring structure to the upper edge of the plastic tank bottom 1 and the lower edge of the metal vertical cylinder 2 to obtain a complete water tank. The installation structure is simple and reasonable. The two opposing U-shaped clamps avoid complex welding processes and can strengthen the outer part of the water tank joint after connection, resulting in good reliability.

[0057] The cleaning device in this embodiment can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the cleaning device to perform corresponding operations, thereby realizing intelligent control of the cleaning device and improving the user experience.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A method for assembling a water tank, characterized in that: The water tank includes a plastic tank bottom (1) and a metal vertical cylinder (2). The plastic tank bottom (1) has an upwardly extending side wall (11). The lower edge of the metal vertical cylinder (2) is connected to the upper edge of the side wall (11) and locked together by a connecting component (3). The connecting component (3) includes a first U-shaped clamp (31), a second U-shaped clamp (32), and a locking member (33). The first U-shaped clamp (31) surrounds the first part of the lower edge of the metal vertical cylinder (2). The second U-shaped clamp (32) surrounds the second part of the lower edge of the metal vertical cylinder (2) and mutually limits each other with the first U-shaped clamp (31) to form an annular structure surrounding the metal vertical cylinder (2). The locking member (33) is used to lock the annular structure to the upper edge of the plastic tank bottom (1) and the lower edge of the metal vertical cylinder (2). During assembly, the first U-shaped clamp (31) and the second U-shaped clamp (32) are pushed into the metal cylinder (2) from opposite sides by sliding until the first U-shaped clamp (31) and the second U-shaped clamp (32) wrap around the lower edge of the metal cylinder (2) and the ends of the first U-shaped clamp (31) and the second U-shaped clamp (32) are relatively limited. Then, the first U-shaped clamp (31) and the second U-shaped clamp (32) are locked and connected to the upper edge of the plastic groove bottom (1) and the lower edge of the metal cylinder (2) by the locking member (33).

2. A water tank, characterized in that: The metal vertical cylinder (2) is obtained by splicing method according to claim 1. The lower edge of the metal vertical cylinder (2) is provided with an outwardly extending first retaining edge (21). The bottom of the first U-shaped clamp (31) is formed with a first sliding groove (311) that can slide from the first side of the first retaining edge (21) to surround the outer periphery of the first part of the metal vertical cylinder (2). The bottom of the second U-shaped clamp (32) is formed with a second sliding groove (321) that can slide from the second side of the first retaining edge (21) to surround the outer periphery of the second part of the metal vertical cylinder (2).

3. The water tank according to claim 2, characterized in that: The ends of the first U-shaped clamp (31) and the second U-shaped clamp (32) are provided with a buckle structure that can be engaged and limited when the two are slid into place.

4. The water tank according to claim 3, characterized in that: The first U-shaped clamp (31) has a first slot (01) at its first end, and the second U-shaped clamp (32) has a first buckle (011) at its first end that can engage with the first slot (01); the first U-shaped clamp (31) has a second buckle (021) at its second end, and the second U-shaped clamp (32) has a second slot (02) at its second end that can engage with the second buckle (021).

5. The water tank according to claim 2, characterized in that: The first U-shaped clamp (31) includes a first support edge (10) that can be placed on the top of the first clamp edge (21) and a first surrounding edge (100) located around the first support edge (10) and extending downward, the first support edge (10) and the first surrounding edge (100) together enclosing the first groove (311); and / or The second U-shaped clamp (32) includes a second support edge (20) that can be placed on the top of the first clamp edge (21) and a second periphery edge (200) located around the second support edge (20) and extending downward. The second support edge (20) and the second periphery edge (200) together enclose the second groove (321).

6. The water tank according to claim 5, characterized in that: The lower end of the first perimeter (100) and / or the second perimeter (200) forms a support platform (001), and the upper edge of the plastic groove bottom (1) extends outward to form a second locking edge (12) that can be pressed onto the support platform (001). The locking member (33) is used to lock the first perimeter (100) and / or the second perimeter (200) to the first locking edge (21) and the second locking edge (12).

7. The water tank according to claim 6, characterized in that: The locking member (33) is a screw. The first retaining edge (21) and the second retaining edge (12) are respectively provided with connecting holes (1a) for the screw to pass through. Correspondingly, the first surrounding edge (100) and / or the second surrounding edge (200) are respectively formed with threaded posts (1b).

8. The water tank according to claim 7, characterized in that: The first clip edge (21) is provided with a positioning hole (1c), and correspondingly, the first support edge (10) and / or the second support edge (20) are provided with a positioning post (1d) that can be locked in the positioning hole (1c) to pre-position the first clip edge (21) with the corresponding clamp.

9. The water tank according to claim 6, characterized in that: A sealing gasket (4) is also sandwiched between the first locking edge (21) and the second locking edge (12).

10. A cleaning device, characterized in that: The water tank includes any one of claims 2 to 9, and further includes a cleaning tank (5) arranged side by side with the water tank, wherein the top edge of the plastic tank bottom (1) is located below the bottom of the cleaning tank (5).

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