Evaporative cooler descaling device
By designing a spray and collection device, the problems of incomplete dirt removal and environmental protection in evaporative coolers are solved, achieving efficient and flexible dirt removal and wastewater resource treatment, which is suitable for large-scale industrial cooling systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI PENGCHENG HEAT EXCHANGE EQUIP CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-19
AI Technical Summary
Existing evaporative coolers are prone to the precipitation of inorganic scale such as calcium carbonate and sulfate during long-term operation, which leads to a decrease in heat exchange efficiency. Traditional descaling methods have problems such as corrosion, environmental pollution, incomplete cleaning, and inability to respond to scale changes in real time.
By employing a spraying device and a collection device, and using an electric telescopic rod and a first motor to drive the spraying height and angle adjustment, combined with the design of magnetic filter plates and stirring blades, precise descaling and wastewater resource treatment are achieved, avoiding the defects of traditional cleaning.
It achieves efficient and flexible dirt removal, reduces energy consumption and water usage, meets environmental protection requirements, is suitable for the efficient operation and maintenance of large industrial cooling systems, and promotes green and low-carbon production.
Smart Images
Figure CN224382245U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cooler technology, specifically to a descaling device for an evaporative cooler. Background Technology
[0002] Evaporative coolers are widely used in industrial refrigeration, air conditioning, and chemical industries, achieving efficient heat exchange through water film evaporation and heat absorption. However, during long-term operation, circulating water is prone to the precipitation of inorganic scale such as calcium carbonate and sulfate, as well as the growth of microbial slime, leading to decreased heat exchange efficiency and increased energy consumption. Traditional descaling methods have significant drawbacks: chemical cleaning easily corrodes metal tubes and pollutes the environment; manual cleaning requires shutdown, is inefficient, and does not clean thoroughly; existing mechanical scraping devices are mostly single-rotation structures, which are difficult to adapt to complex scale morphologies and easily damage heat exchange surfaces. In addition, traditional methods lack intelligent control and cannot respond to changes in the degree of scaling in real time, leading to over-cleaning or delayed maintenance. Therefore, there is an urgent need for an efficient and adaptive online descaling technology to extend equipment life, reduce operation and maintenance costs, and meet environmental protection requirements.
[0003] Chinese patent document CN222143903U discloses a descaling device for an evaporative cooler. It includes a housing with several heat exchange coils fixedly installed inside. Each heat exchange coil consists of straight and curved sections. A spray device for spraying cold water onto the heat exchange coils is located on the upper side of the housing. Two drain ports are located at the bottom of the housing, and air inlets and outlets are sequentially located on both sides. A suction fan is located at the air inlet and is fixedly mounted on the housing. The key feature is that a mounting plate is movably installed inside the housing, with several through holes corresponding to the straight sections of the heat exchange coils. Each through hole contains a ring-shaped scraper. This invention has a simple structure and ingenious design. A driving device moves the ring-shaped scrapers to remove scale from the surface of the heat exchange coils, eliminating the need for manual scraping, saving time and effort. The scraping process does not affect the operation of the cooler, improving work efficiency. It does not cause environmental pollution or corrosion to the heat exchange coils, meeting market demands and suitable for widespread application.
[0004] Although the equipment described in the aforementioned literature can clean dirt, its structure is relatively simple, and the adjustment of the spray components is not convenient enough, which reduces the flexibility and cleaning efficiency of the equipment. In addition, the collection of wastewater after cleaning is inconvenient, resulting in low practical value. Utility Model Content
[0005] The main purpose of this invention is to provide a descaling device for evaporative coolers, which can effectively solve the above-mentioned problems.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] An evaporative cooler descaling device includes a cooler body, a heat exchange tube inside the cooler body, a spray device fixedly connected to the inner wall of the cooler body, an annular scraper movably connected to one side of the heat exchange tube, a connecting frame fixedly connected to one side of the annular scraper, a reciprocating screw slidably connected to one end of the connecting frame, a second motor fixedly connected to one end of the reciprocating screw, a collecting device fixedly connected to the lower right side of the cooler body, and a support plate fixedly connected to the lower left side of the cooler body.
[0008] The spraying device includes an electric telescopic rod, the upper end of which is fixedly connected to the inner wall of the cooler body;
[0009] The collecting device includes an inclined plate, which is disposed at the bottom of the cooler body.
[0010] Preferably, the inner wall of the cooler body is provided with a groove, and a pressure sensor is provided on one side of the annular scraper.
[0011] Preferably, a fixing frame is fixedly connected to the lower end of the electric telescopic rod, a first motor is fixedly connected to one side of the fixing frame, and a rotating rod is fixedly connected to the output end of the first motor.
[0012] Preferably, a pipe rack is fixedly connected to one side of the rotating rod, a diverter pipe is fixedly connected to one side of the pipe rack, and a nozzle is fixedly connected to one side of the diverter pipe.
[0013] Preferably, the two ends of the diversion pipe are fixedly connected to telescopic hoses, the upper end of the telescopic hoses is provided with a connector, and the two ends of the fixing frame are slidably connected to slide rods.
[0014] Preferably, a water filter is provided on the right side of the inclined plate, a filter screen is fixedly connected to the upper end of the water filter, and a magnetic filter plate is movably connected to one side of the water filter.
[0015] Preferably, a collection box is fixedly connected to the lower end of the inclined plate, a rotary motor is fixedly connected to the left end of the collection box, and a stirring blade is fixedly connected to the output end of the rotary motor.
[0016] Preferably, the upper end of the collection box is provided with a feed inlet, the right end of the collection box is fixedly connected with a drain outlet and a liquid level window, and a valve is fixedly connected to one side of the drain outlet.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] 1. This utility model provides a descaling device for evaporative coolers. This device is equipped with a spray system, which, through spatial freedom and dynamic adjustment capabilities, upgrades the process from "rough cleaning" to "precise descaling." It offers significant advantages in improving cleaning efficiency, protecting equipment, saving energy, and enabling intelligent management. It is particularly suitable for the efficient operation and maintenance needs of large industrial cooling systems. By adjusting the spray height, different levels of heat exchange tube bundles or packing layers within the cooler can be covered, avoiding the "blind spots" of traditional fixed spraying. Rotating the spray angle allows for flexible adjustments. The multi-row tube bundle and complex layout of the cooler ensure thorough cleaning of dirt, covering large areas with a single adjustment. This replaces the repetitive work of traditional multi-set fixed sprayers, shortening the cleaning cycle and reducing energy and water consumption. The fixed frame is raised and lowered by the extension and retraction of the electric telescopic rod, facilitating the adjustment of the spray height of the components. The rotating rod driven by the first motor allows for easy adjustment of the spray angle of the components, making the equipment more flexible to use. The sliding rod makes the equipment raising and lowering more stable, and the telescopic hose prevents damage from pulling. Water is supplied to the nozzles for spraying and rinsing.
[0019] 2. This utility model provides a descaling device for evaporative coolers. The device is equipped with a collection unit and utilizes a closed-loop design of "classification and recycling - high-efficiency treatment - resource utilization," balancing environmental benefits and economic efficiency. It is particularly suitable for evaporative cooling systems in water-intensive industries such as chemical, power, and metallurgy, contributing to green and low-carbon production. The wastewater collection component prevents the direct discharge of wastewater containing chemical agents and metal fragments generated during the descaling process, preventing pollution of soil and water bodies and complying with environmental regulations. The magnetic filter plate uses magnetic attraction to separate and recover metal fragments from the wastewater, achieving resource reuse and reducing solid waste treatment costs. The stirring components inside the collection tank ensure thorough mixing of wastewater and additives, accelerating the reaction process, improving treatment efficiency, and preventing localized overdose or sediment buildup. Wastewater enters the collection device through the filter inlet, undergoes preliminary filtration through the filter screen, and then passes through a magnetic filter plate to adsorb metal debris. The magnetic plate's push-pull design facilitates removal. The filtered wastewater enters the collection tank, where additives can be injected through the feed inlet to react with the wastewater. A rotary motor drives the internal stirring blades to promote the fusion reaction between the additives and wastewater. Discharge is then controlled by the opening and closing of a valve on the drain outlet. A level window is located on one side of the collection tank for easy monitoring. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the spray device structure of this utility model;
[0022] Figure 3 This is a schematic diagram of the collection device structure of this utility model;
[0023] Figure 4 This is a side view of the collection device of this utility model.
[0024] Figure 5 This is a side view of the structure of this utility model.
[0025] In the diagram: 1. Cooler body; 2. Heat exchange tube; 3. Spraying device; 31. Electric telescopic rod; 32. Fixing frame; 33. First motor; 34. Rotating rod; 35. Pipe rack; 36. Diverter pipe; 37. Spray head; 38. Telescopic hose; 39. Slide rod; 4. Annular scraper; 5. Connecting frame; 6. Reciprocating screw; 7. Second motor; 8. Collection device; 81. Inclined plate; 82. Filter port; 83. Filter screen; 84. Magnetic filter plate; 85. Collection box; 86. Rotary motor; 87. Feed inlet; 9. Support plate. Detailed Implementation
[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0027] like Figure 1 and Figure 5As shown, an evaporative cooler descaling device includes a cooler body 1, with heat exchange tubes 2 installed inside the cooler body 1. A spray device 3 is fixedly connected to the inner wall of the cooler body 1. This device, through its spatial freedom and dynamic adjustment capabilities, upgrades from "rough cleaning" to "precise descaling," offering significant advantages in improving cleaning efficiency, protecting equipment, saving energy, and enabling intelligent management. It is particularly suitable for the efficient operation and maintenance needs of large industrial cooling systems. By adjusting the spray height, different levels of heat exchange tube bundles or packing layers within the cooler can be covered, avoiding the "blind spots" of traditional fixed spraying. Rotating the spray angle allows for flexible handling of coolers with multiple tube bundles and complex layouts, ensuring thorough removal of dirt. A single adjustment can cover a large area, replacing traditional methods. The system utilizes multiple sets of fixed sprayers for repetitive operation, shortening the cleaning cycle and reducing energy and water consumption. A ring scraper 4 is movably connected to one side of the heat exchange tube 2, and a connecting frame 5 is fixedly connected to one side of the ring scraper 4. A reciprocating screw 6 is slidably connected to one end of the connecting frame 5, and a second motor 7 is fixedly connected to one end of the reciprocating screw 6. A collection device 8 is fixedly connected to the lower right side of the cooler body 1. This device, through a closed-loop design of "classification and recycling - efficient treatment - resource utilization," balances environmental benefits and economic efficiency. It is particularly suitable for evaporative cooling systems in water-intensive industries such as chemical, power, and metallurgy, contributing to green and low-carbon production. The wastewater collection component prevents the direct discharge of wastewater containing chemical agents and metal fragments generated during descaling, preventing pollution of soil and water bodies and complying with environmental regulations. The magnetic filter plate separates and recycles metal scraps from wastewater through magnetic adsorption, realizing resource reuse and reducing solid waste treatment costs. The stirring component in the collection box ensures that the wastewater and additives are fully mixed, accelerating the reaction process, improving treatment efficiency, and preventing local overdose or sedimentation. A support plate 9 is fixedly connected to the lower left side of the cooler body 1.
[0028] The spraying device 3 includes an electric telescopic rod 31, the upper end of which is fixedly connected to the inner wall of the cooler body 1.
[0029] The collecting device 8 includes an inclined plate 81, which is located at the bottom of the cooler body 1; the inner wall of the cooler body 1 is provided with a groove, and a pressure sensor is provided on one side of the annular scraper 4.
[0030] like Figure 2As shown, a fixed frame 32 is fixedly connected to the lower end of the electric telescopic rod 31. A first motor 33 is fixedly connected to one side of the fixed frame 32. A rotating rod 34 is fixedly connected to the output end of the first motor 33. A pipe rack 35 is fixedly connected to one side of the rotating rod 34. A diversion pipe 36 is fixedly connected to one side of the pipe rack 35. A nozzle 37 is fixedly connected to one side of the diversion pipe 36. Telescopic hoses 38 are fixedly connected to both ends of the diversion pipe 36. A connector is provided at the upper end of the telescopic hose 38. A sliding rod 39 is slidably connected to both ends of the fixed frame 32. The telescopic rod 31 drives the fixed frame 32 to rise and fall, which facilitates the adjustment of the spray height of the component. The first motor 33 drives the rotating rod 34 to rotate, which facilitates the adjustment of the spray angle of the component, making the equipment more flexible to use. The sliding rod 39 makes the equipment rise and fall more smoothly. The telescopic hose 38 is provided to avoid damage from pulling. Water is connected to the water source and delivered to the nozzle 37 for spraying and rinsing.
[0031] like Figure 3 and Figure 4 As shown, a filter port 82 is provided on the right side of the inclined plate 81. A filter screen 83 is fixedly connected to the upper end of the filter port 82. A magnetic filter plate 84 is movably connected to one side of the filter port 82. A collection box 85 is fixedly connected to the lower end of the inclined plate 81. A rotary motor 86 is fixedly connected to the left end of the collection box 85. An agitator blade is fixedly connected to the output end of the rotary motor 86. A feed inlet is provided at the upper end of the collection box 85. A drain outlet and a liquid level window are fixedly connected to the right end of the collection box 85. A magnetic filter plate 84 is fixedly connected to one side of the drain outlet. Wastewater enters the collection device through the filter inlet 82, undergoes preliminary filtration through the filter screen 83, and then passes through the magnetic filter plate 84 to adsorb metal debris. The magnetic filter plate 84 is designed for easy removal. The filtered wastewater enters the collection tank 85, where additives can be injected through the feed inlet 87 to react with the wastewater for treatment. A rotary motor 86 drives the internal stirring blades to rotate, which promotes the fusion reaction between the additives and the wastewater. The discharge is then controlled by the opening and closing of the valve on the drain outlet. A liquid level window is provided on one side of the collection tank 85 for easy observation.
[0032] The working principle of this utility model is as follows: The spraying device 3 is driven by the telescopic rod 31 to raise and lower the fixed frame 32, which facilitates the adjustment of the spraying height of the components. The first motor 33 drives the rotating rod 34 to rotate, which facilitates the adjustment of the spraying angle of the components, making the equipment more flexible to use. The sliding rod 39 makes the raising and lowering of the equipment more stable. The telescopic hose 38 is set to avoid damage from pulling. Water is connected to the water source and delivered to the nozzle 37 for spraying and rinsing. Using the collection device 8, the wastewater enters the collection device from the filter port 82. After preliminary filtration by the filter screen 83, the metal debris is adsorbed by the magnetic filter plate 84, which is easy to remove by pushing and pulling. The filtered wastewater enters the collection tank 85. Additives can be injected from the feed port 87 to react with the wastewater for treatment. The rotating motor 86 drives the internal stirring blade to rotate, which can promote the fusion reaction between the additives and the wastewater. Then, the discharge is controlled by the opening and closing of the valve on the drain port. A liquid level window is set on one side of the collection tank 85 for easy observation.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An evaporative cooler descaling device comprising a cooler body (1) characterized by: The cooler body (1) is provided with a heat exchange tube (2) inside. A spray device (3) is fixedly connected to the inner wall of the cooler body (1). A ring scraper (4) is movably connected to one side of the heat exchange tube (2). A connecting frame (5) is fixedly connected to one side of the ring scraper (4). A reciprocating screw (6) is slidably connected to one end of the connecting frame (5). A second motor (7) is fixedly connected to one end of the reciprocating screw (6). A collecting device (8) is fixedly connected to the lower right side of the cooler body (1). A support plate (9) is fixedly connected to the lower left side of the cooler body (1). The spraying device (3) includes an electric telescopic rod (31), the upper end of which is fixedly connected to the inner wall of the cooler body (1). The collecting device (8) includes an inclined plate (81) which is disposed at the bottom of the cooler body (1).
2. An evaporative cooler fouling device as set forth in claim 1 wherein: The inner wall of the cooler body (1) is provided with a sliding groove, and a pressure sensor is provided on one side of the annular scraper (4).
3. An evaporative cooler fouling device as set forth in claim 1 wherein: The lower end of the electric telescopic rod (31) is fixedly connected to a fixed frame (32), and a first motor (33) is fixedly connected to one side of the fixed frame (32). The output end of the first motor (33) is fixedly connected to a rotating rod (34).
4. An evaporative cooler fouling device as set forth in claim 3 wherein: A pipe rack (35) is fixedly connected to one side of the rotating rod (34), a diversion pipe (36) is fixedly connected to one side of the pipe rack (35), and a nozzle (37) is fixedly connected to one side of the diversion pipe (36).
5. An evaporative cooler fouling device as set forth in claim 4 wherein: The two ends of the diversion pipe (36) are fixedly connected to a telescopic hose (38), the upper end of the telescopic hose (38) is provided with a connector, and the two ends of the fixing frame (32) are slidably connected to a slide rod (39).
6. An evaporative cooler fouling device as set forth in claim 1 wherein: A filter port (82) is provided on the right side of the inclined plate (81), and a filter screen (83) is fixedly connected to the upper end of the filter port (82). A magnetic filter plate (84) is movably connected to one side of the filter port (82).
7. An evaporative cooler fouling device as set forth in claim 6 wherein: The lower end of the inclined plate (81) is fixedly connected to a collection box (85), the left end of the collection box (85) is fixedly connected to a rotary motor (86), and the output end of the rotary motor (86) is fixedly connected to a stirring blade.
8. An evaporative cooler fouling device as set forth in claim 7 wherein: The upper end of the collection box (85) is provided with a feed inlet, and the right end of the collection box (85) is fixedly connected with a drain outlet and a liquid level window, and a valve is fixedly connected to one side of the drain outlet.