A stainless steel water tank with a water filtration device

Abstract

This invention provides a stainless steel sink with a water filtration device, belonging to the technical field of stainless steel sinks. The stainless steel sink with the water filtration device includes a sink with a drain hole; a filtration device is installed at the drain hole, and includes a housing and a filter element disposed inside the housing. The filter element filters impurities in the water, and the filtered impurities can be discharged through the drain outlet. The filtered water can also be discharged through the drain outlet, thus achieving solid-liquid separation. Furthermore, the filter element automatically discharges the filtered impurities from the drain outlet, avoiding the need for manual cleaning by the user. This also prevents oil from dripping onto the ground when removing the filter basket, and avoids oil stains on hands.

Description

Technical Field

[0001] This invention belongs to the field of stainless steel sink technology, and specifically relates to a stainless steel sink with a water filtration device. Background Technology

[0002] Stainless steel sinks are made from stainless steel as the raw material. The main body is processed by stretching or welding, and then the surface is treated to form the finished product. They are an indispensable part of the installation of kitchen cabinets, and the finished product is used in modern kitchens as an essential tool for washing vegetables or dishes.

[0003] Existing stainless steel sinks typically have a filter basket at the drain outlet to filter out food scraps or vegetable scraps, preventing them from clogging the drain pipe. However, when the filter basket in these common stainless steel sinks is full, it needs to be manually removed from the sink for cleaning. When removing the filter basket, the oil on it can easily drip onto the ground, making the floor dirty. In addition, when removing the filter basket, the workers' hands can easily get oily, requiring them to clean their hands again. Summary of the Invention

[0004] The purpose of this invention is to provide a stainless steel water tank with a water filtration device, which aims to solve the problem that when the filter basket in the stainless steel water tank is full, it is necessary to manually remove the filter basket from the stainless steel water tank for cleaning. When the filter basket is removed, the oil on the filter basket is easy to drip onto the ground, causing the ground to be dirty. In addition, when the filter basket is removed, the workers' hands are easily stained with oil, so the workers need to clean their hands again.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a stainless steel water tank with a water filtration device, comprising:

[0006] Water tank, wherein a drain hole is provided on the water tank;

[0007] A filtration device is installed in the water tank at the drain hole. The filtration device includes a housing and a filter element installed inside the housing. The filter element can be used to filter the water in the water tank. The housing is also provided with a drain outlet, a drain outlet and a water inlet. Impurities filtered by the filter element can be discharged from the drain outlet, and the filtered water can be discharged from the drain outlet.

[0008] A further technical solution of the present invention is that the filter element includes a long sidewall and a short sidewall, and sealing discs that fit against the inner wall of the housing are provided on both sides of the long sidewall and the short sidewall. The long sidewall, the short sidewall and the sealing disc form a filtration cavity. A water passage hole is provided in the middle of one of the sealing discs so that water can be discharged from the filter element. The intersection of the long sidewall and the short sidewall is located on one side of the rotation axis of the filter element. The long sidewall is provided with a first filter hole for filtering impurities in the water. The long sidewall and the short sidewall are provided in four sets in a circular array with the rotation axis of the filter element as the axis. The filter element is provided with a limiting structure so that a filtration cavity is located below the water inlet each time the filter element rotates.

[0009] A further technical solution of the present invention is that the limiting structure includes a limiting ball disposed at one end of the filter element, the filter element is provided with a sliding groove, the limiting ball can slide inside the sliding groove, the sliding groove is provided with a first elastic element that can push the limiting ball close to the housing, the inner wall of the housing is provided with an arc-shaped surface, the two ends of the arc-shaped surface are unequally spaced from the rotation axis of the filter element, the arc-shaped surfaces are arranged in a ring around the rotation axis of the filter element in the same number as the filter cavity, and every two adjacent arc-shaped surfaces are connected end to end by a first transition surface, the limiting ball can move on the arc-shaped surface and the first transition surface.

[0010] A further technical solution of the present invention is that the filter element is provided with a clearing component inside, the clearing component includes a sliding member that slides inside the filter element, the sliding member is provided with a clearing column adapted to the first filter hole, the sliding member is provided with a sliding groove, and the two ends of the sliding member are provided with sliders that can slide inside the sliding groove. The clearing component also includes a driving structure that can drive the four sliding members to slide.

[0011] A further technical solution of the present invention is that the driving structure includes a fixed shaft fixed inside the housing, an offset block is provided on the fixed shaft, a notch is provided above the offset block, the sliding member located directly above is located at the notch, a second transition surface is provided on the side of the notch located in the rotation direction of the filter element, and a second elastic member is provided inside the slide groove to push the sliding member away from the long sidewall.

[0012] A further technical solution of the present invention is that the first filter hole is provided with a flared opening on the side near the sliding member, and the diameter of the unblocking column is smaller than the diameter of the first filter hole.

[0013] A further technical solution of the present invention is that an opening is provided on one side of the housing, the filter element can be installed inside the housing through the opening, and a sealing cap is provided at the opening.

[0014] A further technical solution of the present invention is that a stamping component is provided inside the water tank, the stamping component includes a filter plate that can slide inside the water tank, the filter plate is provided with a plurality of second filter holes, a valve plate is provided below the second filter holes, the valve plate can slide up and down on the filter plate by a sliding column, and a third elastic member that pushes the filter plate upward is provided below the filter plate.

[0015] A further technical solution of the present invention is that a sliding plate is provided above the drain hole of the filter plate and slides inside the filter plate. An avoidance hole is provided on one side of the filter plate, and the filter plate can close the avoidance hole.

[0016] A further technical solution of the present invention is that the drain hole is located on one side of the water tank near the edge.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This stainless steel water tank with a water filter can filter impurities in the water during use. The filtered impurities can be discharged through the drain outlet, and the filtered water can be discharged through the drain outlet, thus achieving the purpose of solid-liquid separation. In addition, the filter can automatically discharge the filtered impurities through the drain outlet, which can avoid the user manually cleaning the filtered impurities. This also avoids the situation where oil stains are dripped on the ground when the filter basket is removed, and the hands are easily stained with oil.

[0019] 2. In order to ensure that the filter chamber is located below the water inlet with each rotation of the stainless steel water tank with a water filtration device, a limiting ball is provided on the filter element. The limiting ball is pushed to contact the inner wall of the shell by a first elastic element. An arc-shaped surface and a first transition surface are provided inside the shell. When the limiting ball moves on the arc-shaped surface and the first transition surface, it can limit the angle of each rotation of the filter element, so that one of the filter chambers on the filter element can be positioned below the water inlet each time.

[0020] 3. This stainless steel water tank with a water filtration device has a sliding component inside the filter element, and a clearing column on the sliding component. When the sliding component approaches the filter element, it can clear the filter holes of the filter element, which can prevent the filter holes from becoming clogged. In addition, it can block the filter holes located below the filter element, and the water inside flows out from below the filter element.

[0021] 4. This stainless steel water tank with a water filtration device has a stamping component. When the filter element is stuck, the stamping component can apply pressure to the filter element to assist its rotation, thereby solving the problem of the filter element getting stuck. In addition, the stamping component also has a filtration function, which can filter out larger impurities and prevent larger impurities from entering the interior of the filter element and causing it to get stuck. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0024] Figure 2 This is an isometric sectional view of a specific embodiment of the present invention;

[0025] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0026] Figure 4 This is an isometric sectional view of the filter element and the housing in a specific embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the installation of the filter element in a specific embodiment of the present invention;

[0028] Figure 6 This is an isometric sectional view of the filter element in a specific embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the mounting structure of the sliding member in a specific embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram showing the location of the water passage holes in a specific embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the limiting structure in a specific embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the sliding component in a specific embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram of the stamping component in a specific embodiment of the present invention.

[0034] In the diagram: 1. Water tank; 101. Drain hole; 3. Filter device; 301. Housing; 3011. Sewage outlet; 3012. Drain outlet; 3013. Water inlet; 3014. Opening; 302. Filter element; 3022. Filter chamber; 3023. Long side wall; 3024. Short side wall; 3025. First filter hole; 3026. Sealing plate; 3027. Water passage hole; 303. Limiting structure; 3031. Limiting ball; 3032. Sliding groove; 3033. First elastic element; 3034. Arc-shaped surface 3035, First transition surface; 4, Unblocking component; 401, Sliding component; 402, Unblocking column; 403, Slide groove; 404, Sliding block; 405, Driving structure; 4051, Fixed shaft; 4052, Offset block; 4053, Slide track; 4054, Sliding column; 4055, Notch; 4056, Second transition surface; 4057, Second elastic component; 5, Sealing cover; 6, Stamping component; 601, Filter plate; 602, Second filter hole; 603, Valve plate; 604, Third elastic component; 605, Slide plate. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The principles and spirit of the present invention will be explained in detail below with reference to embodiments thereof.

[0037] This invention provides a stainless steel water tank with a water filtration device:

[0038] Please see Figure 1-2 The present invention provides the following technical solution: a stainless steel sink with a water filtration device, including a sink 1, which can be circular, rectangular or other polygonal in shape. In this embodiment, the shape of the sink is not limited. The sink needs to be used in conjunction with cabinets or other equipment so that the cabinets or other equipment can be used to support and fix the sink 1.

[0039] A drain hole 101 is provided at the bottom of the water tank 1. The drain hole 101 can be used to discharge the wastewater used inside the water tank 1 to the outside of the water tank 1. A filter device 3 is provided at the drain hole 101. The filter device 3 can be used to filter the stains in the discharged wastewater. The filter device 3 is the main improvement in this application. The structure and principle of the filter device 3 will be explained in detail below.

[0040] like Figure 2-5As shown, the filter device 3 includes a housing 301 fixed at the drain hole 101 of the water tank 1. The housing 301 has a drain outlet 3011, a drain outlet 3012 and a water inlet 3013. The drain outlet 3011 and the drain outlet 3012 are both located below the housing 301, so that impurities and filtered water can be discharged from the drain outlet 3011 and the drain outlet 3012 by their own gravity. The water inlet 3013 is located above the housing 301 and is connected to the drain hole 101, so that water inside the water tank 1 can flow into the interior of the housing 301 through the drain hole 101 and the water inlet 3013.

[0041] like Figure 4-6 As shown, a filter element 302 is disposed inside the housing 301. The filter element 302 can rotate inside the housing 301. The filter element 302 has a long sidewall 3023 and a short sidewall 3024, which form a hook shape. Sealing discs 3026 are disposed on both sides of the long sidewall 3023 and the short sidewall 3024 (see [reference]). Figure 3 The sealing disc 3026 is circular, and its edge fits against the housing 301, forming a filter chamber 3022 between the long sidewall 3023, the short sidewall 3024, the sealing disc 3026, and the housing 301. A water passage hole 3027 is provided in the middle of one of the sealing discs 3026, allowing water filtered by the filter element 302 to pass through the water passage hole 3027 (see [reference]). Figure 3 or Figure 8 The water is discharged from the filter element 302. Both the long sidewall 3023 and the short sidewall 3024 can be curved or straight. The intersection of the long sidewall 3023 and the short sidewall 3024 is located on one side of the rotation axis of the filter element 302. That is, the intersection of the long sidewall 3023 and the short sidewall 3024 is located at the eccentricity of the rotation axis of the filter element 302. Furthermore, the long sidewall 3023 is provided with a first filter hole 3025, which can filter impurities in the water, ensuring that the filtered impurities are within the filter... The filtered water enters the filter element 302 and is temporarily stored inside the cavity 3022, and is discharged from the water passage 3027. Since the intersection of the long sidewall 3023 and the short sidewall 3024 is located at the eccentricity of the rotation axis, the gravity of the impurities inside the filter cavity 3022 will drive the filter element 302 to rotate. There are four sets of long sidewall 3023 and short sidewall 3024 arranged in a ring array with the rotation axis of the filter element 302 as the axis, and each set can constitute the filter cavity 3022.

[0042] In order for the water in the tank 1 to fall into the filter chamber 3022 of the filter element 302, the inlet 3013 is located above the filter element 302, so that the sewage can fall into the interior of the filter chamber 3022 through the inlet 3013.

[0043] To allow the filtered debris in the filter chamber 3022 to be discharged through the drain port 3011, the drain port 3011 is located below the filter element 302. When the filter chamber 3022 rotates to the drain port 3011, the debris inside the filter chamber 3022 can be discharged through the drain port 3011 by its own weight. In actual use, a collection bag can be installed at the drain port 3011 so that the debris discharged from the drain port 3011 can fall into the collection bag for collection. The collection bag can be a garbage bag or other waterproof bag. The opening of the collection bag is detachably located at the drain port 3011 so that the collection bag can be replaced.

[0044] Please see Figure 3 and Figure 9 To ensure that the filter element 302 can rotate 90° each time it rotates, and that a filter chamber 3022 is always located below the inlet 3013 during each rotation, a limiting structure 303 is provided on one side of the filter element 302. This limiting structure 303 includes a limiting ball 3031 at one end of the filter element 302, and a sliding groove 3032 perpendicular to the axis of the filter element 302. The limiting ball 3031 can slide inside the sliding groove 3032, and a first elastic element 3033 (a compression spring) is provided inside the sliding groove 3032. This first elastic element 3033 can push the limiting ball 3031 into contact with the inner wall of the housing 301, so that when the filter element 302 rotates inside the housing 301, the filter element 302... 2 can drive the limiting ball 3031 to roll on the inner wall of the housing 301. Of course, when the limiting ball 3031 rolls on the inner wall of the housing 301, the sliding groove 3032 can limit the limiting ball 3031, so that the limiting ball 3031 can only slide inside the sliding groove 3032. An arc-shaped surface 3034 is provided on the inner wall of the housing 1. The distance between the two ends of the arc-shaped surface 3034 and the rotation axis of the filter element 302 is not equal. That is to say, the distance between one end of the arc-shaped surface 3034 and the rotation axis of the filter element 302 is greater than or less than the distance between the other end and the rotation axis of the filter element 302. The arc-shaped surfaces 3034 are arranged in a ring around the rotation axis of the filter element 302 and the same number as the filter cavity 3022. Every two adjacent arc-shaped surfaces 3034 are connected end to end through the first transition surface 3035.

[0045] When the limiting structure 303 is in use, if impurities accumulate inside the filter chamber 3022, the eccentric arrangement of the filter chamber 3022 causes the center of gravity of the impurities inside the filter chamber 3022 to be located on one side of the rotation axis of the filter element 302. This allows the weight of the impurities to push the filter element 302 to rotate. When the filter element 302 rotates, the limiting ball 3031 rolls through the first transition surface 3035 to the higher end of the adjacent arc-shaped surface 3034. At this time, the first elastic element 3033 is compressed, and the limiting ball 3031... 031 will also retract into the sliding groove 3032. At this time, the gravity of the debris continues to drive the filter element 302 to rotate. At the same time, the first elastic element 3033 pushes the limiting ball 3031 to roll on the arc surface 3034, so that the limiting ball rolls from the higher end to the lower end, which can be used to assist the filter element 302 to rotate until the limiting ball 3031 rolls to contact another first transition surface 3035, which can limit the position of the filter element 302 to rotate. At this time, the filter chamber 3022 is located directly below the water inlet 3013.

[0046] It should be noted that the elasticity of the first elastic element 3033 should be selected to be small, so that when the filter chamber 3022 is full of debris, the filter element 302 rotates by its own gravity, so that the limiting ball 3031 can overcome the elasticity of the first elastic element 3033 and retract into the sliding groove 3032.

[0047] In actual use, the applicant found that the water filtered from the upper filter chamber 2033 would flow out through the lower first filter hole 3025 after entering the interior of the filter element 302, and then flow out through the drain port 3011. At the same time, the first filter hole 3025 was also prone to clogging. Therefore, the applicant provided a second embodiment to solve the above problems.

[0048] Please see Figure 5-8 As shown, a clearing component 4 is provided inside the filter element 302. The conveying component 4 can clear the first filter hole 3025 to prevent the filter hole from being blocked and improve the filtration effect. In addition, the conveying component 4 can also block the filter holes located at the bottom and on both sides, so that the filter element 302 forms a water-holding chamber, which can prevent the filtered water from flowing out from the filter holes at the bottom or on both sides.

[0049] The unblocking component 4 includes a sliding member 401 located inside the filter element 302. The sliding member 401 can slide inside the filter element 302, and when the side of the filter element 302 closest to the long sidewall 3023 contacts the long sidewall 3023, the filter element 302 can fit against the inner wall of the long sidewall 302. The sliding member 401 is provided with an unblocking column 402, which can be adapted to the first filter hole 3025. When the sliding member 401 contacts the long sidewall 3025... When the 23 is attached, the unblocking column 402 can be inserted into the interior of the first filter hole 3025, so that the unblocking column 402 can unblock the filter hole 3023 and prevent the first filter hole 3025 from being blocked. In addition, a sliding groove 403 is provided on the sliding member 401, and sliders 404 that can slide inside the sliding groove 403 are provided at both ends of the sliding member 401, which can guide the sliding of the sliding member 401, making it easier for the unblocking column 402 to be inserted into the interior of the first filter hole 3025.

[0050] Of course, the unblocking component 4 also includes a driving structure 405 that can drive the four sliding members 401 to slide. The driving component 4 can simultaneously drive the sliding members 401 located below and on both sides to fit against the long sidewall 3023, so that the sliding members 401 block the first filter holes 3025 on the long sidewall 3023 located below and on both sides, preventing water from flowing out of the first filter holes 3025. In addition, it can also drive the sliding member 401 located above to move away from the long sidewall 3023, so that the first filter hole 3025 located above can filter the impurities in the water and allow the water to flow into the interior of the filter element 302 through the first filter hole 3025.

[0051] Please continue reading. Figure 5-8 As shown, the drive structure 405 includes a fixed shaft 4051 fixed inside the housing 301. The fixed shaft 4051 can be integrally formed with the housing 301 or fixed to the housing 301 by screws. An offset block 4052 is provided on the fixed shaft 4051. The offset block 4052 can be fixedly connected to the fixed shaft 4051. The offset block 4052 is cylindrical, and a notch 4055 is provided on the top of the offset block 4052 (see [reference]). Figure 4 The slider 401, located directly above, is positioned at the notch 4055, ensuring that the slider 401 does not contact the offset block 4052. A second transition surface 4056 is provided on the side of the notch 4055 located in the rotation direction of the filter element 302 (see [link]). Figure 4The second transition surface 4056 is tangentially disposed to the outer surface of the offset block 401, so that when the sliding member 401 rotates with the filter element 302, the second transition surface 4056 gradually pushes the sliding member 401 towards the long sidewall 3023, and keeps the outer surface of the offset block 4052 in contact with the sliding member 401 and the long sidewall 3023. In order to move the upper sliding member 401 away from the long sidewall 3023, the first filter hole 3025 on the long sidewall can filter water in the trough. The interior of 403 is provided with a second elastic element 4057, which is a compression spring or an elastic sheet. The second elastic element 4057 can push the sliding element 401 away from the long sidewall 3023, so that the upper sliding element 401 is located at the notch 4055. The second elastic element 4057 pushes the sliding element 401 away from the long sidewall, so that the sliding element 401 and the unblocking column 402 can release the seal on the filter hole 3025, thereby allowing the water to be filtered into the interior of the filter element 302.

[0052] Slides 4053 are provided on both sides of the offset block 4052. The slides 4053 are annular, and slide posts 4054 that can slide inside the slides 4053 are provided on the slider 401 (see [link]). Figure 10 The sliding column 4054 has two sliding columns 4054 on each side of the sliding member 401. Both sliding columns 4054 can slide inside the slide channel 4053. When the filter member 302 rotates, it can drive the sliding member 401 to rotate together, so that the sliding column 4054 on the sliding member 401 can slide inside the slide channel 4053. By the two sliding columns 4054 sliding inside the slide channel 4053, the sliding member 401 can be limited to prevent the sliding member 401 from shaking when sliding, so that the unblocking column 402 can more easily enter the interior of the first filter hole 3025.

[0053] Furthermore, such as Figure 4 An flared opening is provided on the side of the first filter hole 3025 near the sliding member 401. The flared opening makes it easier for the unblocking column 402 to enter the interior of the first filter hole 3025, making it easier for the unblocking column 402 to unblock the first filter hole 3025. Furthermore, it makes it easier for the unblocking column 402 to enter the interior of the first filter hole 3025. The diameter of the unblocking column 402 is smaller than the diameter of the first filter hole 3025.

[0054] Please see Figure 5To facilitate cleaning of the filter element 302, an opening 3014 is provided on one side of the housing 301. The filter element 302 can be installed inside the housing 301 through the opening 3014, and a sealing cover 5 is provided at the opening 3014. The cover 5 can be fixedly installed at the opening 3014 by screws. By loosening the screws and removing the cover 5, the filter element 302 can be removed and cleaned or repaired.

[0055] Based on the above structure, in actual use, the applicant found that when the filter element 302 filters water, some large debris can easily cause the filter element 302 to jam. That is, when the debris in the filter chamber 3022 pushes the filter element 302 to rotate by its own gravity, debris, mainly some large debris, can easily get stuck between the filter element 302 and the housing 301, thus causing the filter element 302 to jam and be unable to rotate. Therefore, the applicant provided a third embodiment to solve the above problem.

[0056] Please see Figure 1 , Figure 2 and Figure 11 Inside the water tank 1, a stamping component 6 is installed. This stamping component 6 also has the function of filtering larger impurities in the water. When the filter element 302 is stuck, the stamping component 6 presses against the filter element 302, causing the stamping component 6 to apply pressure to the filter chamber 3022, so that the filter element 302 can overcome the resistance caused by the stuck impurities, thereby allowing the filter element 302 to rotate. In addition, the stamping component 6 can also filter larger impurities, thereby reducing the possibility of the filter element 302 getting stuck. The structure and location of the stamping component 6 are explained in detail below:

[0057] The stamping component 6 includes a filter plate 601 that can slide up and down inside the water tank 1. Multiple second filter holes 602 are provided on the filter plate 601. Below the second filter holes 602, a valve plate 603 is provided. The valve plate 603 is buoyant and can float in water. Its material can be wood or plastic / rubber with a density less than water. The valve plate 603 can slide up and down on the filter plate 601 via a sliding pin. Below the filter plate 601, a third elastic element 604, which is a compression spring, is provided. Pushing the filter plate 601 upwards during use will reduce the filtration performance of the filter element 302 if it becomes stuck, causing a large amount of water to accumulate inside the water tank 1. Then, the user presses the filter plate 601 downwards, causing it to move downwards. The valve plate 603 then blocks the second filter hole 602. As the filter plate 601 moves downwards, it pushes the water to apply pressure to the filter element 302, causing the water to rotate and thus clearing the stuck filter element 302.

[0058] To facilitate sealing or opening the drain hole 101, the drain hole 101 is located on one side of the water tank 1 near the edge, which can be understood as the left or right side when the user is facing the water tank 1 during normal use. A sliding plate 605 is provided above the drain hole 101 on the filter plate 601. The sliding plate 605 can slide inside the filter plate 601. When it is necessary to open or close the drain hole 101, the sliding plate 605 is pushed into the filter plate 601, opening the clearance opening above the drain hole 101, thus sealing or opening the drain hole 101. Then, the sliding plate 605 is pulled outward to close the clearance opening. To facilitate pushing the sliding plate 605, a handle is provided on the sliding plate 605, which makes it easy to push the sliding plate 605 to slide.

Claims

1. A stainless steel water tank with a water filtration device, characterized in that, include: Water tank (1), the water tank (1) is provided with a drain hole (101); A filter device (3) is installed in the water tank (1) at the drain hole (101). The filter device (3) includes a housing (301) and a filter element (302) installed inside the housing (301). The filter element (302) can be used to filter the water in the water tank (1). The housing (301) is also provided with a drain outlet (3011), a drain outlet (3012) and a water inlet (3013). The impurities filtered out by the filter element (302) can be discharged from the drain outlet (3011), and the filtered water can be discharged from the drain outlet (3012). The filter element (302) includes a long sidewall (3023) and a short sidewall (3024). Sealing discs (3026) that fit against the inner wall of the housing (301) are provided on both sides of the long sidewall (3023) and the short sidewall (3024). The long sidewall (3023), the short sidewall (3024), and the sealing discs (3026) form a filter chamber (3022). A water passage hole (3027) is provided in the middle of one of the sealing discs (3026) to allow water to drain from the filter element (302). The long sidewall (3023)... 3) The intersection of the long sidewall (3024) and the short sidewall (3024) is located on one side of the rotation axis of the filter element (302). The long sidewall (3023) is provided with a first filter hole (3025) for filtering impurities in the water. The long sidewall (3023) and the short sidewall (3024) are arranged in four sets in a ring array with the rotation axis of the filter element (302) as the axis. The filter element (302) is provided with a limiting structure (303) so that each time the filter element (302) rotates, a filter chamber (3022) is located below the inlet (3013). The limiting structure (303) includes a limiting ball (3031) disposed at one end of the filter element (302). The filter element (302) is provided with a sliding groove (3032). The limiting ball (3031) can slide inside the sliding groove (3032). The sliding groove (3032) is provided with a first elastic element (3033) that can push the limiting ball (3031) closer to the housing (301). The inner wall of the housing (301) is provided with an arc-shaped... The arc-shaped surface (3034) has different distances between its two ends and the rotation axis of the filter element (302). The arc-shaped surfaces (3034) are arranged in a ring around the rotation axis of the filter element (302) in the same number as the filter chamber (3022). Every two adjacent arc-shaped surfaces (3034) are connected end to end by a first transition surface (3035). The limiting ball (3031) can move on the arc-shaped surface (3034) and the first transition surface (3035).

2. The stainless steel water tank with a water filtration device according to claim 1, characterized in that: The filter element (302) is provided with a dredging component (4) inside. The dredging component (4) includes a sliding member (401) that slides inside the filter element (302). The sliding member (401) is provided with a dredging column (402) that is adapted to the first filter hole (3025). The sliding member (401) is provided with a sliding groove (403). The two ends of the sliding member (401) are provided with sliders (404) that can slide inside the sliding groove (403). The dredging component (4) also includes a driving structure (405) that can drive the four sliding members (401) to slide.

3. A stainless steel water tank with a water filtration device according to claim 2, characterized in that: The drive structure (405) includes a fixed shaft (4051) fixed inside the housing (301), an offset block (4052) is provided on the fixed shaft (4051), a notch (4055) is provided above the offset block (4052), the sliding member (401) located directly above is located at the notch (4055), the notch (4055) is provided on one side of the rotation direction of the filter element (302) and a second transition surface (4056) is provided inside the groove (403), and a second elastic member (4057) is provided inside the groove (403) to push the sliding member (401) away from the long sidewall (3023).

4. A stainless steel water tank with a water filtration device according to claim 2, characterized in that: The first filter hole (3025) is provided with an flared opening on the side near the slider (401), and the diameter of the unblocking column (402) is smaller than the diameter of the first filter hole (3025).

5. A stainless steel water tank with a water filtration device according to claim 1, characterized in that: An opening (3014) is provided on one side of the housing (301), and the filter element (302) can be installed inside the housing (301) through the opening (3014). A sealing cap (5) is provided at the opening (3014).

6. A stainless steel water tank with a water filtration device according to claim 1, characterized in that: The water tank (1) is provided with a stamping component (6), which includes a filter plate (601) that can slide inside the water tank (1). The filter plate (601) is provided with a plurality of second filter holes (602). A valve plate (603) is provided below the second filter holes (602). The valve plate (603) can slide up and down on the filter plate (601) by means of a sliding column. A third elastic element (604) that pushes the filter plate (601) upward is provided below the filter plate (601).

7. A stainless steel water tank with a water filtration device according to claim 6, characterized in that: The filter plate (601) is provided with a sliding plate (605) above the drain hole (101) and slides inside the filter plate (601). The filter plate (601) is provided with a clearance hole on one side of the sliding plate (605) and the filter plate (601) can close the clearance hole.

8. A stainless steel water tank with a water filtration device according to any one of claims 1-7, characterized in that: The drain hole (101) is located on one side of the water tank (1) near the edge.

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