Cooling tower with automatic defoaming
By installing beaters and ultrasonic sensors in the cooling tower's water receiving pan, the problem of water loss in the cooling system caused by foam generation was solved, achieving automated defoaming and energy consumption optimization, and improving the operational stability of the cooling tower.
Patent Information
- Application Number
- CN202522420628.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-14
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-14
AI Technical Summary
During use, cooling towers may generate foam due to water pollution or chemical substances. If this foam cannot be eliminated in time, it will result in water loss in the cooling system and affect the stability of operation.
Beating blades are installed inside the water receiving tray of the cooling tower. The rotating beating blades break up the foam, and the centrifugal force throws the foam to the inner wall of the water receiving tray for further breakage. At the same time, ultrasonic sensors are used to detect the foam and initiate defoaming operation when necessary. Spikes and thin plates are installed on the beating blades to enhance the defoaming effect.
It achieves automated defoaming, prevents foam overflow, maintains stable water volume in the cooling system, reduces energy consumption, and improves the operational stability of the cooling tower.
Smart Images

Figure CN224933284U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cooling tower defoaming technology, specifically to a cooling tower that can automatically defoam. Background Technology
[0002] A cooling tower is an evaporative cooling device that uses the contact between air and water for heat exchange, dissipating waste heat generated in industrial or refrigeration and air conditioning systems into the atmosphere to lower the water temperature. Its core function is to achieve cooling through the contact (direct or indirect) between water and air. Water molecules gain sufficient energy near the water surface, overcome the attraction of neighboring water molecules, and escape from the water surface, becoming water vapor. Because the high-energy water molecules escape, the energy of the water near the surface decreases, and the water temperature drops.
[0003] When a cooling tower is in use, foam may be generated in the water receiving pan for various reasons, such as water pollution, dirt inside the cooling tower, excessively high or low alkalinity of the water, and the presence of chemicals in the water. If the foam cannot be eliminated in time, it will overflow from the water receiving pan, causing excessive water loss in the cooling system and affecting the stable operation of the cooling system. Utility Model Content
[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution: A cooling tower with automatic defoaming capability includes a tower body, a water receiving tray installed directly below the tower body, and multiple support columns installed on the outer bottom of the tower body and the outer top of the water receiving tray. A sleeve is fixed in the middle of the water receiving tray, and a sleeve is fitted onto the sleeve inside the water receiving tray. Multiple equally spaced beaters are fixed on the outer side of the sleeve, and a fixing ring is fixed at the end of the beaters. A toothed ring is installed on the top of the fixing ring, and multiple evenly spaced protruding teeth are fixed on the outer side of the toothed ring. A second motor is installed on the water receiving tray below the outer side of the toothed ring, and a gear is installed on the output end of the second motor. The gear meshes with the protruding teeth.
[0005] Furthermore, the bottom of the water receiving tray is fixed with multiple supports, the top of the sleeve is fitted with a lifting pipe extending into the tower body, the bottom of the sleeve is fitted with a water supply pipe extending below the water receiving tray, the bottom of the side of the water receiving tray has a water outlet, and a return water pipe is fitted onto the water outlet. A support is installed on the lifting pipe inside the tower body, and a water spraying packing is installed above the support. Multiple diversion pipes are fitted on the top of the lifting pipe inside the tower body, and multiple spray heads are connected to the bottom of each diversion pipe. A fixing frame is installed on the top of the tower body, and a motor is installed in the middle of the fixing frame. A fan is installed at the output end of the motor.
[0006] Furthermore, an installation frame is installed at the bottom of the tower body, and an ultrasonic sensor is installed at the bottom of the installation frame.
[0007] Furthermore, a support seat is fitted onto the sleeve inside the water receiving tray, and a support bearing is installed on the top of the support seat, with the sleeve installed on top of the support bearing.
[0008] Furthermore, multiple rollers are installed on the inner wall of the water receiving tray below the fixing ring, and the fixing ring is located on the rollers for rolling support.
[0009] Furthermore, the tapping blade is inclined in a clockwise direction and rotates in a clockwise direction.
[0010] Furthermore, dense spikes are welded and fixed to the front side of the flapping blade facing the direction of rotation.
[0011] Furthermore, multiple parallel thin plates are fixed to the rear side of the striking blade facing away from the direction of rotation.
[0012] The beneficial effects of this utility model are as follows: 1. This utility model is equipped with a tapping blade inside the water receiving tray. When the tapping blade rotates, it can tap the foam in the water receiving tray and break the foam by tapping. When the tapping blade rotates, it can also throw the foam to the inner wall of the water receiving tray by centrifugal force, and break the foam by collision, thereby achieving the defoaming effect.
[0013] 2. In this utility model, foam is detected by an ultrasonic sensor. When foam is detected, defoaming is performed. When no foam is detected, the machine is stopped to reduce energy consumption.
[0014] 3. In this utility model, spikes are provided on the front side of the beating blade, which can actively puncture the foam, thereby improving the defoaming effect when the beating blade rotates.
[0015] 4. In this utility model, a thin plate is provided on the rear side of the beater blade. When the beater blade comes into contact with the water surface and generates new foam while rotating, the thin plate can break these foams, thereby controlling the foam generated by the defoaming process itself. Attached Figure Description
[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the sleeve arrangement in this utility model; Figure 4 This is a schematic diagram of the arrangement of the tapping blade in this utility model; Figure 5 This is a schematic diagram of the toothed ring configuration in this utility model; Figure 6 This is a schematic diagram of the ultrasonic sensor setup in this utility model.
[0017] Reference numerals in the attached diagram: 1. Tower body; 2. Water receiving tray; 3. Sleeve; 4. Lifting pipe; 5. Support; 6. Spraying packing; 7. Diversion pipe; 8. Spray head; 9. Water supply pipe; 10. Water return pipe; 11. Fixing frame; 12. Motor 1; 13. Fan; 14. Bracket; 15. Sleeve; 16. Beating blade; 17. Spike; 18. Thin plate; 19. Support seat; 20. Support bearing; 21. Fixing ring; 22. Idler roller; 23. Toothed ring; 24. Convex tooth; 25. Motor 2; 26. Gear; 27. Mounting frame; 28. Ultrasonic sensor; 29. Water outlet; 30. Support column. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0019] This application provides a cooling tower with automatic defoaming capability and offers the following technical solution, which will be discussed in conjunction with... Figures 1-6 Please provide a detailed explanation: A cooling tower with automatic defoaming capability, such as Figure 1-3 and Figure 6 As shown, the system includes a tower body 1, a water receiving tray 2 installed directly below the tower body 1, multiple support columns 30 bolted to the outer bottom of the tower body 1 and the outer top of the water receiving tray 2, multiple brackets 14 welded to the bottom of the water receiving tray 2, a sleeve 3 welded to the middle of the water receiving tray 2, the sleeve 3 being hollow, a lifting pipe 4 extending upward into the tower body 1 fitted to the top of the sleeve 3, a water supply pipe 9 extending downward into the water receiving tray 2 fitted to the bottom of the sleeve 3, and a water outlet 29 opened on the bottom side of the water receiving tray 2, with a return water pipe 10 fitted onto the water outlet 29. A support 5 is bolted to the riser pipe 4 inside the tower body 1. The support 5 is installed at the lower two-thirds position inside the tower body 1. A water spraying packing 6 is installed above the support 5. Multiple diversion pipes 7 are sleeved on the top of the riser pipe 4 inside the tower body 1. Multiple spray heads 8 are threaded to the bottom of each diversion pipe 7. A fixing frame 11 is bolted to the top of the tower body 1. A motor 12 is bolted to the middle of the fixing frame 11. A fan 13 is bolted to the output end of the motor 12. The fan 13 is set to blow air upwards towards the tower body 1. A sleeve 15 is fitted onto the sleeve 3 inside the water receiving tray 2. Multiple equally spaced beaters 16 are welded and fixed to the outside of the sleeve 15. A fixing ring 21 is welded and fixed to the end of the beaters 16. A toothed ring 23 is bolted to the top of the fixing ring 21. Multiple evenly spaced protruding teeth 24 are integrally formed and fixed to the outside of the toothed ring 23. A motor 25 is bolted to the water receiving tray 2 below the outside of the toothed ring 23. A gear 26 is bolted to the output end of the motor 25. The gear 26 meshes with the protruding teeth 24.
[0020] During use, water is supplied to the cooling system from the water supply pipe 9, and then the cooled water is recovered from the return pipe 10 and sent back to the cooling system to form a cooling cycle. The hot water to be cooled is supplied into the riser pipe 4 through the water supply pipe 9, and then enters each branch pipe 7 along the riser pipe 4. It is then sprayed downwards from the spray head 8 along the branch pipe 7. The water is dispersed by the spray head 8 and sprayed onto the water-spraying packing 6 below, forming a water film on the water-spraying packing 6. Under the action of gravity, the water flows continuously downwards along the water-spraying packing 6, and finally the water droplets drip down from the water-spraying packing 6 into the water receiving tray 2. During use, the motor 12 and the motor are turned on simultaneously. When motor 12 is working, its output drives fan 13 to rotate. Fan 13 blows air upwards towards the tower body 1, while negative pressure is generated below, inside the tower body 1. External air is supplied into the tower body 1 from between the tower body 1 and the water receiving tray 2, forming forced ventilation. When the air flows from bottom to top inside the tower body 1, it comes into contact with the water on the water spraying packing 6 and the dripping hot water, thus exchanging heat. The air that has absorbed heat is discharged from the top of the tower body 1. Some water absorbs heat and evaporates to form water vapor, which is also discharged from the top of the tower body 1, thus achieving a cooling effect. The cooled water drips into the water receiving tray 2 and then flows out from the return water pipe 10. When motor 25 is working, its output end drives gear 26 to rotate. Since gear 26 meshes with gear ring 23, it also drives gear ring 23 to rotate. Gear ring 23, fixed ring 21, beater blade 16 and sleeve 15 are a rigid whole. When gear ring 23 is driven to rotate by motor 25, beater blade 16 and sleeve 15 rotate around sleeve base 3 as the axis. When there is foam on the surface of the water in water receiving tray 2, beater blade 16 can beat these foams and break them. Adjust the diameter of return water pipe 10 and water supply pipe 9 to balance their supply and delivery, and at the same time ensure that beater blade 16 is above the water surface. When beater blade 16 rotates, some foam is thrown out and hits the inner wall of water receiving tray 2 under the centrifugal force of beater blade 16 rotation. The foam is broken by impact, thereby achieving the defoaming effect.
[0021] like Figure 6 As shown, a mounting bracket 27 is bolted to the bottom of the tower body 1, and an ultrasonic sensor 28 is bolted to the bottom of the mounting bracket 27.
[0022] When in use, motor 12 can be turned on first to allow it to cool down normally, but motor 25 should not be turned on. At this time, ultrasonic sensor 28 continuously emits ultrasonic waves downwards, i.e. towards water tray 2. When there is foam on the water surface in water tray 2, due to the difference in acoustic impedance between the foam and the water, the ultrasonic signal that is finally reflected back has a difference in signal strength and a time difference, thus determining that there is foam in water tray 2 and it needs to be defoamed. At this time, motor 25 is turned on, and the beater blade 16 rotates to beat and defoam. When no foam is detected, the machine can be stopped to reduce energy consumption.
[0023] like Figure 3 and Figure 5 As shown, a support seat 19 is fitted onto the sleeve 3 inside the water receiving tray 2. A support bearing 20 is bolted to the top of the support seat 19, and the sleeve 15 is bolted to the top of the support bearing 20.
[0024] The support base 19 and the support bearing 20 provide stable support for the sleeve 15, while ensuring smooth rotation of the sleeve 15.
[0025] like Figure 3 As shown, multiple rollers 22 are bolted to the inner wall of the water receiving tray 2 below the fixing ring 21, and the fixing ring 21 is supported by rolling on the rollers 22.
[0026] The sleeve 15 is supported by the support seat 19 and the support bearing 20, and the outer side is supported by the roller 22 to ensure the stability of the beater blade 16 when it rotates. This prevents the beater blade 16 from swaying when it rotates due to the large diameter of the cooling tower, which would affect the stability of the operation.
[0027] like Figure 4 As shown, the tapping blade 16 is tilted clockwise and rotates clockwise.
[0028] The tilt direction of the beating blade 16 is consistent with the rotation direction. When the beating blade 16 rotates, it can not only beat the foam by rotating, but also use the tilted structure to press the foam into the water, so that it dissolves in the water and defoams, which can improve the defoaming effect.
[0029] like Figure 4 As shown, dense spikes 17 are welded and fixed to the front side of the flapping blade 16 facing the direction of rotation.
[0030] When the tapping leaf 16 rotates, the spikes 17 face forward, and the spikes 17 can actively puncture the foam, especially the larger foam, increasing the defoaming methods and further improving the defoaming effect.
[0031] like Figure 4 As shown, multiple parallel thin plates 18 are welded and fixed to the rear side of the striking blade 16 facing away from the direction of rotation.
[0032] As the beater blade 16 rotates, the bottom of the thin plate 18 passes between the water and the foam, breaking the foam generated after the beater blade 16 rotates. Similarly, the thin plate 18 can also break up and defoam any foam that is not broken by the beater blade 16.
[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A cooling tower with automatic defoaming capability, comprising a tower body (1), a water receiving tray (2) installed directly below the tower body (1), and a plurality of support columns (30) installed on the outer bottom of the tower body (1) and the outer top of the water receiving tray (2), characterized in that, A sleeve (3) is fixed in the middle of the water receiving tray (2). A sleeve (15) is fitted on the sleeve (3) inside the water receiving tray (2). Multiple equally spaced beaters (16) are fixed on the outside of the sleeve (15). A fixing ring (21) is fixed at the end of the beaters (16). A toothed ring (23) is installed on the top of the fixing ring (21). Multiple evenly spaced convex teeth (24) are fixed on the outside of the toothed ring (23). A second motor (25) is installed on the water receiving tray (2) below the outside of the toothed ring (23). A gear (26) is installed at the output end of the second motor (25). The gear (26) meshes with the convex teeth (24).
2. The cooling tower with automatic defoaming capability according to claim 1, characterized in that, The bottom of the water receiving tray (2) is fixed with multiple brackets (14), the top of the sleeve (3) is fitted with a lifting pipe (4) extending into the tower body (1), the bottom of the sleeve (3) is fitted with a water supply pipe (9) extending below the water receiving tray (2), the bottom of the side of the water receiving tray (2) is provided with a water outlet (29), a return water pipe (10) is fitted on the water outlet (29), a support (5) is installed on the lifting pipe (4) inside the tower body (1), a water spraying packing (6) is installed above the support (5), multiple diversion pipes (7) are fitted on the top of the lifting pipe (4) inside the tower body (1), and multiple spray heads (8) are connected to the bottom of each diversion pipe (7). A fixing frame (11) is installed on the top of the tower body (1), a motor (12) is installed in the middle of the fixing frame (11), and a fan (13) is installed at the output end of the motor (12).
3. A cooling tower with automatic defoaming capability according to claim 1, characterized in that, An installation frame (27) is installed at the bottom of the tower body (1), and an ultrasonic sensor (28) is installed at the bottom of the installation frame (27).
4. A cooling tower with automatic defoaming capability according to claim 3, characterized in that, A support seat (19) is fitted onto the sleeve (3) inside the water receiving tray (2). A support bearing (20) is installed on the top of the support seat (19), and a sleeve (15) is installed on the top of the support bearing (20).
5. A cooling tower with automatic defoaming capability according to claim 4, characterized in that, Multiple rollers (22) are installed on the inner wall of the water receiving tray (2) below the fixed ring (21), and the fixed ring (21) is located on the rollers (22) for rolling support.
6. A cooling tower with automatic defoaming capability according to claim 1 or 5, characterized in that, The slapping blade (16) is inclined in the clockwise direction and rotates in the clockwise direction.
7. A cooling tower with automatic defoaming capability according to claim 6, characterized in that, The front side of the flapping blade (16) facing the direction of rotation is welded with dense spikes (17).
8. A cooling tower with automatic defoaming capability according to claim 7, characterized in that, Multiple parallel thin plates (18) are fixed on the rear side of the striking blade (16) facing away from the direction of rotation.
