Closed pool cleaning device
By designing a closed-loop water tank cleaning device and adopting a hydraulic cleaning method, the problems of high difficulty and high risk in cleaning closed-loop water tanks were solved, achieving efficient and safe cleaning operations and reducing the impact on production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TANGSHAN JIAHUA COAL CHEM LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-05-29
AI Technical Summary
Cleaning closed water tanks is difficult and risky, and existing methods affect production continuity and safety, with long cleaning cycles and potential safety hazards.
Design a closed-loop water tank cleaning device, including a perforated horizontal pipe, a vertical pipe, a positioning flange, a rotating handle, a rotatable control valve, and a fire hose interface. The device replaces manual or mechanical cleaning with hydraulic cleaning and uses jet holes to suspend and discharge accumulated sludge.
It achieves efficient cleaning of enclosed water tanks, reduces the impact on production, improves the continuity and safety of cleaning operations, and reduces the risks of manual and mechanical operations.
Smart Images

Figure CN224300144U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a closed water tank cleaning device, belonging to the technical field of cleaning equipment. Background Technology
[0002] Water tanks are storage structures and also serve as treatment components in the water treatment industry. Water tanks come in several types. First, there are open-type water tanks, consisting of a bottom and walls. These are often seasonal and lack antifreeze and anti-evaporation features. Second, there are closed-type water tanks, with most of the tank body located below ground level. These offer improved antifreeze and insulation. Closed-type water tanks have a more complex structure and require higher investment; their roofs often utilize thin-shell concrete arches or ribbed arches.
[0003] For open pools, cleaning is quick and easy, using either manual or mechanical methods, offering high safety, convenience, and thorough cleaning. In contrast, cleaning enclosed pools is significantly more difficult. Firstly, visibility is limited, making it hard to observe the pool's interior. Secondly, confined spaces pose a high risk and can easily result in multiple injuries. Thirdly, many pools contain harmful substances that are toxic, further posing a danger to cleaning operations. Therefore, it's crucial to implement comprehensive safety measures beforehand and develop a thorough cleaning plan, demonstrating its safety to prevent accidents.
[0004] Currently, the cleaning methods for closed water tanks are as follows: First, the tank must be emptied by opening the drain outlet and draining all the water to ensure complete removal. Second, debris must be removed: one method is manual cleaning, where cleaning personnel enter the tank and use shovels and other tools to pile up debris, which is then removed from the tank using hoisting equipment; another method is mechanical cleaning, where cleaning machinery is inserted into the tank to pile up debris due to its large inlet, and then removed from the tank using hoisting equipment; a third method is high-pressure water jet cleaning, where high-pressure water jets are used to flush up debris, and in conjunction with a mud pump, the debris is moved to a designated area where sedimentation is used to separate the water from the debris, ultimately achieving the purpose of cleaning.
[0005] The cleaning methods described above are commonly used. However, they pose various safety hazards during operation and significantly impact normal business operations.
[0006] (1) The water tank cannot be used normally. When cleaning, the water tank must be emptied, which affects normal use and prevents long-term, efficient, and continuous operation;
[0007] (2) Long cleaning cycle. Cleaning the water tank requires multiple operations such as emptying, cleaning, hoisting and commissioning, which results in a long cleaning cycle and a long time commitment;
[0008] (3) Confined space operations are high-risk. Enclosed water tanks are confined spaces, and confined space operations are high-risk operations, posing a huge safety hazard to construction.
[0009] (4) The cleaning is difficult. The work is carried out in a closed space, with a large number of cleaning personnel and construction tools. It includes various electrical facilities and requires hoisting equipment to move the equipment outwards, involving multi-level joint operations. Utility Model Content
[0010] The purpose of this invention is to provide a closed-loop water tank cleaning device that facilitates cleaning of closed-loop water tanks and solves the problems existing in the background technology.
[0011] The technical solution of this utility model is:
[0012] A closed water tank cleaning device includes a perforated horizontal pipe, a vertical pipe, a positioning flange, a rotating handle, a rotatable control valve, a valve handle, and a fire hose interface. The perforated horizontal pipe and the vertical pipe are welded together as a whole. The perforated horizontal pipe is provided with several spray holes. The positioning flange and the rotating handle are respectively set on the vertical pipe. The vertical pipe is provided with a rotatable control valve and a fire hose interface at its end.
[0013] The perforated horizontal pipe and the vertical pipe are welded together to form an L-shape.
[0014] The length of the riser is greater than the depth of the enclosed water tank.
[0015] Compared to the positioning flange on the riser, the rotating handle is closer to the rotatable control valve and fire hose interface at the end of the riser.
[0016] The number and size of the injection holes are adjusted according to the length and diameter of the perforated horizontal pipe.
[0017] The injection holes on the perforated horizontal tube are evenly arranged.
[0018] The beneficial effects of this utility model are: it completely changes the form of cleaning closed water tanks, changing from manual or mechanical cleaning to hydraulic cleaning, eliminating the impact of cleaning operations on production operations, reducing the workload of cleaning, and improving the continuous and long-term nature of cleaning operations. Attached Figure Description
[0019] Figure 1 This is a side view of the present invention;
[0020] Figure 2 This is a cross-sectional view of the present invention;
[0021] Figure 3 This is a top view of the present invention;
[0022] Figure 4 This is a schematic diagram of the usage state of this utility model;
[0023] In the diagram: 1. Horizontal pipe with perforation; 2. Vertical pipe; 3. Positioning flange; 4. Rotary handle; 5. Rotatable control valve; 6. Valve handle; 7. Fire hose interface; 8. Spray hole; 9. Enclosed water tank; 10. Smooth pad. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and examples.
[0025] See attached document Figure 1-4 A closed water tank cleaning device includes a perforated horizontal pipe 1, a vertical pipe 2, a positioning flange 3, a rotating handle 4, a rotatable control valve 5, a valve handle 6, and a fire hose interface 7. The perforated horizontal pipe 1 and the vertical pipe 2 are welded together as a whole. The perforated horizontal pipe 1 is provided with several spray holes 8. The positioning flange 3 and the rotating handle 4 are respectively provided on the vertical pipe 2. The vertical pipe 2 is provided with a rotatable control valve 5 and a fire hose interface 7 at its end.
[0026] In this embodiment, refer to the appendix Figure 1-4 The cleaning device includes a perforated horizontal pipe 1, a vertical pipe 2, a positioning flange 3, a rotating handle 4, a rotatable control valve 5, a valve handle 6, and a fire hose interface 7. The perforated horizontal pipe 1 and the vertical pipe 2 are welded into an L-shape. The positioning flange 3 is welded to the vertical pipe 2 to adjust and limit the downward length of the vertical pipe 2. The rotatable control valve 5 is fixed to the vertical pipe 2 to control the water inlet and pressure of the cleaning device. The fire hose interface 7 is used to connect to an external water source with sufficient pressure and quantity.
[0027] The cleaning and decontamination device is made of ordinary carbon steel. Riser 2 is a 9.6-meter-long DN100 steel pipe, and horizontal pipe 1 is a 0.8-meter-long DN100 steel pipe. Holes are evenly drilled at the end, top, and bottom of horizontal pipe 1, with one DN20 hole drilled at the center of the end. Four DN20 holes are evenly drilled at the top and bottom of horizontal pipe 2. A 360° rotating DN65 fire valve is installed at the top of riser 2, and the valve outlet (DN65) is connected to the water pump using a DN65 fire hose. Positioning flange 3 is installed at 8.5 meters. The rotating handle is made of 0.5 meters of DN50 pipe.
[0028] See attached document Figure 4 The enclosed water tank is 28 meters long, 13.2 meters wide, and 7 meters high, with an effective volume of 2587 m³. It is connected to the outside world only by two manholes, one inspection port, and five drainage pumps. The tank has been operating continuously for four years, draining water with high turbidity and suspended solids content. After several years of use, the silt at the bottom of the tank has accumulated to a depth of approximately 2 meters. The narrow inlet and outlet, large volume, and thick silt accumulation make manual cleaning difficult. Furthermore, the continuous flow of water makes it impossible to cut off the medium and access the tank for cleaning.
[0029] This cleaning device can solve the above problems to a certain extent. The specific implementation steps are as follows:
[0030] A. Drill 6 holes evenly at the top of the water tank 8, DN200, and install smooth iron pads 9 to serve as the force-bearing platform and rotation surface of the cleaning device.
[0031] B. Produce three sets of this cleaning device;
[0032] C. Use a hoist to place this cleaning device into the three holes on the top of the pool respectively;
[0033] D. At the manhole of the water tank, below the lowest liquid level of the water tank, install one fixed submersible sewage pump and install one DN65 fire valve at the outlet of the submersible sewage pump;
[0034] E. Connect the fire valve at the outlet of the stationary submersible sewage pump to the fire valve at the top of the cleaning device using a DN65 fire hose.
[0035] F. Start the stationary submersible sewage pump, open the outlet fire valve, and simultaneously adjust the opening of the valve at the top of the cleaning device;
[0036] G. Two people rotate the handle 4 of the cleaning device to continuously impact the accumulated mud, causing it to suspend.
[0037] H. Turn on the sewage pump to discharge the suspended sewage from the pool and transport it to the designated location for sedimentation to separate the water from the impurities.
[0038] 1. Monitor the condition under the pool at all times. After cleaning the three holes, use a hoist to move to the other three holes for cleaning.
[0039] J. After all is completed, increase the horizontal pipe from 0.8 meters to 2 meters, rearrange the holes evenly, and clean again to achieve a thorough cleaning.
Claims
1. A closed-loop water tank cleaning device, characterized in that: It includes a perforated horizontal pipe (1), a riser (2), a positioning flange (3), a rotating handle (4), a rotatable control valve (5), a valve handle (6), and a fire hose interface (7). The perforated horizontal pipe (1) and the riser (2) are welded together as a whole. The perforated horizontal pipe (1) is provided with several spray holes (8). The positioning flange (3) and the rotating handle (4) are respectively set on the riser (2). The riser (2) is provided with a rotatable control valve (5) and a fire hose interface (7) at its end.
2. The closed-loop water tank cleaning device according to claim 1, characterized in that: The perforated horizontal tube (1) and the vertical tube (2) are welded together to form an L-shape.
3. The closed-loop water tank cleaning device according to claim 2, characterized in that: The length of the riser (2) is greater than the depth of the enclosed water tank.
4. The closed-loop water tank cleaning device according to claim 1, characterized in that: Compared to the positioning flange (3) on the riser (2), the rotating handle (4) is closer to the rotatable control valve (5) and fire hose interface (7) at the end of the riser (2).
5. The closed-loop water tank cleaning device according to claim 1, characterized in that: The number and size of the injection holes (8) are adjusted according to the length and diameter of the perforated horizontal tube (1).
6. The closed-loop water tank cleaning device according to claim 1, characterized in that: The injection holes (8) on the perforated horizontal tube (1) are evenly arranged.