A lightweight cleaning device for secondary water supply tanks

By designing an automated cleaning device that includes a spray plate and a rotating pipe, the problems of corrosion in secondary water supply tank cleaning devices and low efficiency in traditional cleaning methods have been solved, achieving efficient cleaning without water interruption and avoiding secondary pollution.

CN121042320BActive Publication Date: 2026-01-30NINGBO WATER ENVIRONMENT GROUP CO LTD
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Patent Information

Application Number
CN202511607353.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-11-05
Publication Date
2026-01-30
Estimated Expiration
2045-11-05

AI Technical Summary

Technical Problem

In existing technologies, the cleaning devices for secondary water supply tanks are immersed in solutions for a long time, which causes corrosion of metal parts and may release chemicals that cause secondary pollution. In addition, traditional manual cleaning requires water to be shut off, which is inefficient.

Method used

Design a lightweight cleaning device that includes a water spray plate and a rotating pipe. Utilize a motor-driven gear and sprocket system to achieve synchronous rotation and movement of the water spray plate and scraper. Combined with spraying and scraping functions, it automates the cleaning of the inner wall of the water tank.

Benefits of technology

It achieves highly efficient automated cleaning without interrupting water supply, avoids metal corrosion, improves cleaning efficiency and safety, and reduces the risk of secondary pollution.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application provides a lightweight cleaning device for secondary water supply tanks, relating to the field of cleaning device technology. The lightweight cleaning device includes a water tank and a spray plate inside the tank. A first rotating tube capable of lifting and lowering is connected above the spray plate. A first threaded hole is formed at the top of the first rotating tube, and a first threaded rod is fitted inside the tube. A first top bracket is fixed to the top of the threaded rod, connected to the top of the water tank. When the water tank is emptied, a motor drives a crown gear to transmit power to a first sprocket. The first sprocket drives the first rotating tube to rotate through a protrusion in its through-hole. The first rotating tube, in threaded engagement with the first threaded rod, rotates and moves downwards, causing the spray plate at its bottom to descend and rotate synchronously. Simultaneously, a solution flows in from the inlet pipe and is ejected from the first spray hole of the spray plate, achieving efficient cleaning of the inside of the water tank.
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Description

Technical Field

[0001] This invention belongs to the field of cleaning device technology, and in particular relates to a lightweight cleaning device for secondary water supply tanks. Background Technology

[0002] Secondary water supply facilities are an important component of modern high-rise building water supply systems. Water tanks, as key equipment for storing and regulating water volume, have their internal cleanliness directly affecting the drinking water safety and health of end users. Currently, the cleaning of secondary water supply tanks mainly relies on traditional manual cleaning methods.

[0003] Traditional manual cleaning typically requires scheduling a water outage and dispatching professional cleaning personnel to enter the water tank. The specific process includes: emptying the water tank, ventilating the tank, and then having personnel enter the tank to use high-pressure water guns, brushes, mops, and other tools to scrub and rinse the inner walls, top walls, and bottom of the tank.

[0004] In the prior art (publication number CN221387956U, patent application titled "A Stainless Steel Water Tank Cleaning Device"), the device can clean impurities adsorbed on the inner wall of the tank, preventing the impurities from corroding the inner wall of the tank and reducing the service life of the device. It can also quickly clean impurities accumulated at the bottom of the tank without the need for manual cleaning of the inner wall of the tank. It has been found that the prior art has at least the following problems.

[0005] The aforementioned patent describes a cleaning process achieved by stirring the solution inside the water tank using a stirring device. However, this long-term immersion mode poses new water quality safety risks. As the device is submerged in water for extended periods, its metal components may corrode, and its non-metallic components may leach chemical substances. These corrosion products and leachates will be continuously released into the drinking water, creating a secondary source of pollution. Therefore, there are certain risks associated with the cleaning process. Summary of the Invention

[0006] This application aims to at least solve one of the technical problems existing in the prior art where the stirring device is immersed in solution for a long time. To this end, this application proposes a lightweight cleaning device for secondary water supply tanks.

[0007] To achieve the above objectives, the specific technical solution of the present invention is as follows: A lightweight cleaning device for a secondary water supply tank includes a water tank and a spray plate provided inside the water tank. A first rotating pipe that can be raised and lowered is connected above the spray plate. A first threaded hole is provided from the top of the first rotating pipe downwards. A first threaded rod is sleeved inside the first rotating pipe. At the same time, a first top frame is fixed at the top of the first threaded rod. The first top frame is connected to the top of the water tank.

[0008] Preferably, the top of the water tank has four through holes, and a first sprocket that can rotate is provided above the through holes. A limiting groove is provided from the top of the first rotating tube downwards, and a through hole is provided from the center of the first sprocket downwards. The protrusion of the through hole can extend and engage with the limiting groove.

[0009] Preferably, a retaining ring is fixed to the bottom of the first sprocket, a crown gear is fixed to the upper surface of the first sprocket, a motor is fixed to one side of the top of the water tank, and a first gear is fixed to the power output end of the motor. The first gear and the crown gear are meshed together, and a chain is sleeved on the outer circumference of the two first sprockets.

[0010] Preferably, a water inlet pipe is fixed to the top of the first top frame, wherein the bottom opening of the water inlet pipe communicates with the hollow interior of the first threaded rod, a first water spray chamber is provided inside the water spray plate, and a first spray hole communicating with the first water spray chamber is provided on the outer circumferential surface of the water spray plate.

[0011] Preferably, a second top frame is fixedly connected between the two first top frames, and a second threaded rod is fixed downward at the top of the second top frame, wherein a water inlet pipe communicating with it is also fixed at the top of the hollow second threaded rod.

[0012] Preferably, the outer circumferential surface of the second threaded rod is threadedly connected to a second rotating tube, and a second threaded hole is provided from the top of the second rotating tube downwards, the second threaded hole being threadedly connected to the second threaded rod.

[0013] Preferably, a second base plate is provided at the bottom of the second rotating tube, and a connector is fixed on the upper surface of the second base plate. The connector is sleeved by the bottom of the second rotating tube. At the same time, a scraper is fixed on the surface of the second base plate near the inner wall of the water tank, and the surface of the scraper abuts against the inner wall of the water tank.

[0014] Preferably, a second sprocket is fitted onto the outer circumferential surface of the second rotating tube, and the second sprocket is positioned above the rotating hole, and the second sprocket is engaged by the chain.

[0015] Preferably, a flap is provided below the second base plate, and a second spray hole for spraying is also provided on one side of the outer surface of the flap.

[0016] Preferably, the bottom side of the water tank is fixed with a drain outlet for draining water, while the top of the water tank is also provided with a water inlet.

[0017] The lightweight cleaning device for secondary water supply tanks of the present invention has the following advantages:

[0018] 1. This lightweight cleaning device for secondary water supply tanks involves draining the solution from the tank when cleaning is required. The motor then drives a first gear to rotate, which in turn drives a first sprocket via a crown gear. The sprocket's rotation, through a protruding part in the through-hole, causes a first rotating tube to rotate. As the first rotating tube rotates, a spray plate below it also rotates. The rotating tube is then threadedly connected to a first threaded rod, causing it to continuously move downwards. Solution enters through the inlet pipe and exits through the first spray hole, allowing the spray plate to rotate and spray simultaneously as it moves downwards, thus efficiently cleaning the inside of the tank.

[0019] 2. In this lightweight cleaning device for secondary water supply tanks, when the inside of the tank needs to be cleaned, the motor drives the first sprocket through the first gear, and then drives the second sprocket synchronously through the chain. The rotation of the second sprocket causes the second rotating tube to rotate together. Then, the second threaded hole of the second rotating tube is threadedly connected to the first threaded rod, so that the second rotating tube can move downward continuously. After the second rotating tube moves downward, the inner wall of the tank can be scraped by the scraper, and then the water spray plate above the scraper can spray for further cleaning.

[0020] 3. In this lightweight cleaning device for secondary water supply tanks, when the second rotating tube rotates and the scraper removes the inner wall of the tank, the solution is injected into the second spray chamber through the inlet pipe and sprayed out from the second spray hole. At the same time, the second rotating tube drives the inclined plate to rotate together. As the inclined plate rotates continuously, the lifting bar can be continuously moved up and down by the limit rod. As the lifting bar moves back to its original position, the rack drives the second gear meshing on one side, thereby making the flap continuously flip up and down. Then, the solution sprayed from the second spray hole can first clean the inner wall of the tank. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the first top frame and water tank explosion structure of the present invention;

[0024] Figure 3 This is a top view of the overall structure of the present invention;

[0025] Figure 4 For the purposes of this invention Figure 3 Schematic diagram of the cross-sectional structure of the middle AA section;

[0026] Figure 5 This is a schematic diagram of the exploded structure of the first top frame and the first rotating tube of the present invention;

[0027] Figure 6 This is a top view schematic diagram of the first top frame structure of the present invention;

[0028] Figure 7 For the purposes of this invention Figure 6 Schematic diagram of the cross-sectional structure of the middle BB section;

[0029] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle;

[0030] Figure 9 This is a schematic diagram of the second base plate structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the scraper structure of the present invention;

[0032] Figure 11 This is a top view of the second base plate structure of the present invention;

[0033] Figure 12 For the purposes of this invention Figure 11 Schematic diagram of the cross-sectional structure of the middle CC section;

[0034] Figure 13 For the present invention Figure 12 Enlarged structural diagram at point B.

[0035] Explanation of markings in the diagram: 1. Water tank; 11. Drain outlet; 12. Inlet; 13. Rotary hole; 2. First base plate; 21. First top frame; 22. Second top frame; 23. First threaded rod; 231. First rotating pipe; 232. Limiting groove; 233. Spray plate; 234. First sprocket; 235. Through hole; 236. Crown gear; 237. First spray chamber; 238. First spray hole; 239. Snap ring; 24. Second threaded rod; 25. Inlet pipe; 26. 1. First threaded hole; 3. Motor; 31. First gear; 4. Chain; 5. Second rotating tube; 51. Second sprocket; 52. Inclined plate; 53. Second threaded hole; 6. Second base plate; 61. Scraper; 62. Limiting frame; 63. Rotating frame; 64. Connecting joint; 65. Connecting hole; 7. Lifting bar; 71. Lifting groove; 72. Limiting rod; 73. Rack; 8. Flip plate; 81. Second water spray chamber; 82. Second gear; 83. Second spray hole; 84. Hose. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0037] like Figures 1-8 As shown, the present invention discloses a lightweight cleaning device for secondary water supply tanks, comprising a water tank 1 for water storage. The water tank 1 is designed with a hollow structure, with a drain outlet 11 fixedly installed at the bottom of its side wall for draining liquid accumulated inside the tank; and a water inlet 12 at the top, connected to the municipal water supply network for filling the tank with water. When cleaning is required inside the water tank 1, high-pressure water jets can be sprayed through a spray plate 233 to effectively clean the inner wall of the tank.

[0038] A first base plate 2 is installed on the top of the water tank 1. This base plate is composed of two opposing plates. A first top bracket 21 extends upward from the surface of the first base plate 2 and is fixed thereon. The two first top brackets 21 are connected and fixed together by a second top bracket 22. A first threaded rod 23 extends from the top of the first top bracket 21 toward the water tank 1. A rotating hole 13 is opened at a corresponding position on the top of the water tank 1, which is perpendicular to the first threaded rod 23 and the second threaded rod 24. A first rotating tube 231 is fitted onto the outside of the first threaded rod 23. The top of the rotating tube has a first threaded hole 26 machined downward, forming a threaded engagement with the first threaded rod 23. When the first rotating tube 231 rotates, it can move downward along the axial direction of the first threaded rod 23.

[0039] A water inlet pipe 25 is also fixed to the top of the first top frame 21, and its lower end opening is connected to the interior of the hollow first threaded rod 23. The upper end opening of the water spray plate 233 is fitted onto the end of the first rotating pipe 231, and its interior is provided with a first water spray chamber 237. The outer periphery is distributed with first spray holes 238 that communicate with the first water spray chamber 237, and water is sprayed through the first spray holes 238 to perform cleaning operations.

[0040] A first sprocket 234 is fitted onto the outside of the first rotating tube 231, and a limiting groove 232 is formed on its top along the axial direction. A through hole 235 is provided through the center of the first sprocket 234, and the protrusion formed inside the through hole 235 is embedded in the limiting groove 232 to achieve transmission. A retaining ring 239 is provided at the bottom of the first sprocket 234, which is engaged at the port of the rotating hole 13, so that the first sprocket 234 is axially limited during rotation and prevents it from moving up and down.

[0041] One of the first sprockets 234 has a crown gear 236 mounted on its upper end. A motor 3 is fixed to one side of the top of the water tank 1, and a first gear 31 is mounted on its output shaft end. The first gear 31 meshes with the crown gear 236 for transmission. The two first sprockets 234 are linked by a chain 4. When the water tank 1 needs to be cleaned and its internal liquid drained, the motor 3 is started, driving the first gear 31 to rotate, which in turn drives the crown gear 236 and the first sprocket 234 to rotate. The first sprocket 234 drives the first rotating tube 231 to rotate synchronously through the protrusion of the through hole 235. During the rotation, the first rotating tube 231 feeds downward through the threaded engagement with the first threaded rod 23, while simultaneously driving the water spray plate 233 to rotate. The cleaning fluid is injected through the water inlet pipe 25 and finally sprayed out from the first spray hole 238, achieving comprehensive cleaning of the inner wall of the water tank 1 in the combined downward and rotational motion of the water spray plate 233.

[0042] like Figures 2 to 5 and Figures 9 to 10 As shown, a second threaded rod 24 is fixed downwards at the top of the second top frame 22. The second threaded rod 24 is also a hollow structure, and its top is connected to the water inlet pipe 25. A second rotating pipe 5 is externally threaded to the second threaded rod 24. The top of the second rotating pipe 5 has a second threaded hole 53 facing downwards, which forms a threaded engagement with the second threaded rod 24.

[0043] The bottom end of the second rotating tube 5 is connected to a second base plate 6, and a connector 64 is fixed on the upper surface of the base plate. The bottom end of the second rotating tube 5 is fitted onto the connector 64. A scraper 61 is installed on the side of the second base plate 6 near the inner wall of the water tank 1. The scraper 61 contacts the inner wall surface of the water tank 1, and its installation height is lower than that of the spray plate 233 so that after the scraper 61 scrapes away the dirt, the spray plate 233 can perform subsequent spraying.

[0044] The second rotating tube 5 is externally fitted with a second sprocket 51, which is located above the rotating hole 13. The top of the water tank 1 has four rotating holes 13. The second sprocket 51 is connected to the aforementioned transmission system via a chain 4. During the cleaning process, the motor 3 drives the first sprocket 234 via the first gear 31, which in turn drives the second sprocket 51 to rotate via the chain 4, causing the second rotating tube 5 to rotate accordingly. During rotation, the second rotating tube 5 moves downwards through the threaded engagement of the second threaded hole 53 and the second threaded rod 24, causing the scraper 61 to scrape and clean along the inner wall of the water tank 1. The water spray plate 233 above the scraper then sprays water for a thorough cleaning.

[0045] like Figures 9 to 13 As shown, the bottom opening of the second rotating tube 5 communicates with the inner cavity of the second threaded hole 53 and the second threaded rod 24. The top of the connector 64 has a downward-facing connecting hole 65, which communicates with the inner cavity of the second rotating tube 5.

[0046] Rotating frames 63 are fixed on both sides of the bottom surface of the second base plate 6, and a rotatable flap 8 is hinged between the two rotating frames 63. The flap 8 has a second water spray chamber 81 inside, and a second spray hole 83 is opened on its surface facing the inner wall of the water tank 1. The second spray hole 83 communicates with the second water spray chamber 81. A connecting hole 65 is connected to the second water spray chamber 81 via a flexible hose 84, thereby achieving communication with the inner cavity of the second rotating pipe 5.

[0047] A limit frame 62 is installed on the side of the second base plate 6 opposite to the second nozzle 83. The two limit frames 62 are arranged opposite each other, with a lifting bar 7 between them. Lifting grooves 71 are opened on both sides of the lifting bar 7, forming a locking and guiding structure with the limit frame 62. A second gear 82 is fixed on the side of the flip plate 8 near the lifting bar 7. The gear meshes with a rack 73 provided on the surface of the lifting bar 7. The movement of the rack 73 drives the second gear 82 to rotate, thereby causing the flip plate 8 to flip.

[0048] A sloping plate 52 is fixed below the outer periphery of the second rotating tube 5, and a limiting rod 72 is provided at a corresponding position on the surface of the lifting bar 7. The two limiting rods 72 are clamped on the upper and lower sides of the sloping plate 52. When the second rotating tube 5 drives the scraper 61 to scrape the inner wall of the water tank 1, the cleaning fluid enters the second spray chamber 81 through the water inlet pipe 25 and is sprayed out from the second spray hole 83. At the same time, the second rotating tube 5 drives the sloping plate 52 to rotate, and the lifting bar 7 moves up and down reciprocally through the action of the limiting rods 72. The reciprocating motion of the lifting bar 7 drives the second gear 82 through the rack 73, so that the flip plate 8 flips up and down, so that the water flow sprayed from the second spray hole 83 can wash the inner wall of the water tank 1 from multiple angles.

[0049] The working principle of a lightweight cleaning device for secondary water supply tanks: When the inside of water tank 1 needs to be cleaned, the solution inside water tank 1 is drained, and then motor 3 is started. Motor 3 drives the first gear 31 to rotate, and then the first gear 31 drives the first sprocket 234 through the crown gear 236. After the first sprocket 234 rotates, it drives the first rotating tube 231 to rotate through the protrusion of the through hole 235. As the first rotating tube 231 rotates, the water spray plate 233 below it also rotates. After the first rotating tube 231 rotates, it is threadedly connected to the first threaded rod 23, which makes the first rotating tube 231 continuously move downward. Then the solution enters through the water inlet pipe 25 and is sprayed out from the first spray hole 238, so that the water spray plate 233 can continuously rotate and spray while moving downward, so that the solution can efficiently clean the inside of water tank 1.

[0050] While the inside of the water tank 1 is being cleaned, the motor 3 drives the first sprocket 234 through the first gear 31, and then drives the second sprocket 51 synchronously through the chain 4. The rotation of the second sprocket 51 causes the second rotating tube 5 to rotate together. Then the second threaded hole 53 of the second rotating tube 5 is threadedly connected to the first threaded rod 23, so that the second rotating tube 5 can move downward continuously. After the second rotating tube 5 moves downward, the scraper 61 can scrape the inner wall of the water tank 1. Then the water spray plate 233 above the scraper 61 can spray for further cleaning.

[0051] When the second rotating tube 5 rotates to scrape the inner wall of the water tank 1 by the scraper 61, the solution is injected into the second spray chamber 81 through the water inlet pipe 25 and sprayed out from the second spray hole 83. At the same time, the second rotating tube 5 drives the inclined plate 52 to rotate together. As the inclined plate 52 rotates continuously, the lifting bar 7 can be continuously moved up and down by the limit rod 72. As the lifting bar 7 moves back to the original position, the second gear 82 meshing on one side can be driven by the rack 73, thereby making the flip plate 8 continuously flip up and down. Then the solution sprayed by the second spray hole 83 can first clean the inner wall of the water tank 1.

[0052] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A secondary water supply tank lightening cleaning apparatus, characterized by: Includes a water tank (1), wherein a first top frame (21) is connected to the top of the water tank (1), and a second top frame (22) is fixedly connected between the two first top frames (21). A second threaded rod (24) is fixed downward at the top of the second top frame (22), wherein a water inlet pipe (25) communicating with the hollow second threaded rod (24) is also fixed at the top. A rotating pipe (5) is threadedly connected to the outer circumference of the second threaded rod (24), and a second threaded hole (53) is opened downward from the top of the rotating pipe (5). The second threaded hole (53) and the second threaded rod (53) are connected downward. The rod (24) is threaded, and a second base plate (6) is also provided at the bottom of the rotating tube (5). At the same time, a connector (64) is fixed on the upper surface of the second base plate (6). The connector (64) is sleeved on the bottom of the rotating tube (5). At the same time, a scraper (61) is fixed on the surface of the second base plate (6) near the inner wall of the water tank (1). The surface of the scraper (61) abuts against the inner wall of the water tank (1). A second sprocket (51) is sleeved on the outer circumference of the rotating tube (5). At the same time, the second sprocket (51) is placed above the rotating hole (13). The second sprocket (51) is driven by a chain ( 4) The meshing is connected. The bottom opening of the rotating tube 2 (5) is connected to the inner cavity of the second threaded hole (53) and the second threaded rod (24). The top of the butt joint (64) has a downward-facing connecting hole (65) that is connected to the inner cavity of the rotating tube 2 (5). The bottom surfaces of the second base plate (6) are fixed with rotating frames (63). A rotatable flap (8) is hinged between the two rotating frames (63). The flap (8) has a second water spray chamber (81) inside. The surface facing the inner wall of the water tank (1) has a second spray hole (83). On the second base plate (6), opposite to the second spray hole (83) Side-mounted limit frame (62) is provided, with two limit frames (62) arranged opposite each other and a lifting bar (7) provided between them. Lifting grooves (71) are opened on both sides of the lifting bar (7), forming a locking guide structure with the limit frame (62). A second gear (82) is fixed on the side of the flip plate (8) near the lifting bar (7). The gear meshes with the rack (73) provided on the surface of the lifting bar (7). An inclined plate (52) is fixed below the outer peripheral surface of the rotating tube (5). A limit rod (72) is provided at the corresponding position on the surface of the lifting bar (7). The two limit rods (72) are clamped on the upper and lower sides of the inclined plate (52).

2. The secondary water supply tank lightening cleaning apparatus according to claim 1, characterized in that: The water tank (1) is internally provided with a water spraying disc (233), and a first rotating pipe (231) capable of lifting is further connected above the water spraying disc (233), wherein a first threaded hole (26) is formed downward from the top of the first rotating pipe (231), a first threaded rod (23) is sleeved in the first rotating pipe (231), a first top frame (21) is further fixed to the top of the first threaded rod (23), a rotating hole (13) is formed through the top of the water tank (1), wherein four rotating holes (13) are formed, a first sprocket (234) capable of rotating is further arranged above the rotating hole (13), a limiting groove (232) is formed downward from the top of the first rotating pipe (231), and a through hole (235) is further formed downward from the center of the first sprocket (234), and the protruding part of the through hole (235) can be extended and clamped in the limiting groove (232).

3. The secondary water supply tank lightening cleaning apparatus according to claim 2, characterized in that: The bottom of the first sprocket (234) is further fixed with a snap ring (239), the upper surface of the first sprocket (234) is fixed with a crown gear (236), a motor (3) is further fixed to one side of the top of the water tank (1), a first gear (31) is further fixed to the power output end of the motor (3), wherein the first gear (31) is in meshing connection with the crown gear (236), and a chain (4) is sleeved on the outer circumferential surface of the two first sprockets (234).

4. The secondary water supply tank lightening cleaning apparatus according to claim 3, characterized in that: The top of the first top frame (21) is further fixed with a water inlet pipe (25), wherein the bottom opening of the water inlet pipe (25) is in communication with the hollow inside of the first threaded rod (23), a first water spraying cavity (237) is formed in the inside of the water spraying disc (233), and a first spray hole (238) in communication with the first water spraying cavity (237) is further formed in the outer circumferential surface of the water spraying disc (233).

5. The secondary water supply tank lightening cleaning apparatus according to claim 4, characterized in that: The second bottom plate (6) is oppositely provided with a flap (8), and a second spray hole (83) capable of spraying is further formed in one side of the outer surface of the flap (8).

6. The secondary water supply tank lightening cleaning apparatus according to claim 5, characterized in that: The side surface of the water tank (1) is fixed with a drain port (11) for draining water, and the top of the water tank (1) is further provided with a water inlet (12).

Citation Information

Patent Citations

  • Stainless steel water tank cleaning device

    CN221387956U

  • Automatic cleaning water tank device

    CN210853770U