A negative pressure evaporative cooling system
By designing the scraper ring and slider components driven by rotary motors in the negative pressure evaporative cooling system, the automatic cleaning of impurities in the inner wall of the system is achieved, solving the problem of reducing heat transfer efficiency caused by impurities accumulation and improving cooling efficiency.
Patent Information
- Application Number
- CN202411851843.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-04-04
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During operation of the negative pressure evaporation cooling system, the evaporation of the cooling medium may leave impurities, resulting in the formation of a heat insulation layer, hindering heat exchange, reducing heat transfer efficiency, and unable to automatically clean impurities, affecting the normal operation and cooling effect of the system.
A negative pressure evaporative cooling system is designed, including components such as rotating motors, scrapers, sliders and hoppers. The rotating motor drives the scrapers to slide on the guide rails, and the scrapers drive the sliders to slide on the vertical grooves, thereby scraping the impurities in the inner wall of the evaporative cooling box into the hopper, realizing automatic cleaning.
By automatically cleaning impurities, heat transfer efficiency is improved, thus improving cooling efficiency and ensuring the normal operation of the system.
Smart Images
Figure CN119746456A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of negative pressure evaporative cooling, in particular to a negative pressure evaporative cooling system. Background Art
[0002] Negative pressure evaporative cooling is a cooling method that accelerates evaporation by reducing the ambient pressure. When the ambient pressure is lower than atmospheric pressure, the evaporation rate of the liquid will increase. This is because the boiling point of the liquid is lowered in a low-pressure environment, making it easier to reach a boiling state. This cooling method that uses a low-pressure environment to accelerate evaporation is called negative pressure evaporative cooling. The principle of negative pressure evaporative cooling is based on the relationship between boiling point and pressure in physics. Under standard atmospheric pressure, the boiling point of water is 100 degrees Celsius. When the ambient pressure decreases, the boiling point of water will also decrease accordingly. Therefore, under lower pressure, water can boil and evaporate in large quantities at a lower temperature, thereby taking away heat for cooling. Therefore, a negative pressure evaporative cooling system is required.
[0003] During the operation of the negative pressure evaporative cooling system, the evaporation of the cooling medium may leave impurities. When water is used as the cooling medium, the minerals in the water will gradually deposit inside the device as the water evaporates. They will form an insulating layer, hindering the exchange of heat. The deposits will reduce the heat transfer efficiency, and the impurities inside the device cannot be automatically cleaned, which may cause impurity accumulation, thereby affecting the normal operation and cooling effect of the system. Summary of the invention
[0004] The purpose of the present invention is to provide a negative pressure evaporative cooling system to solve the problem that during the operation of the negative pressure evaporative cooling system proposed in the above background technology, the evaporation of the cooling medium may leave impurities. When water is used as the cooling medium, the minerals in the water will gradually deposit inside the device as the water evaporates. They will form an insulating layer, hindering the exchange of heat, and the deposits will reduce the heat transfer efficiency. In addition, the impurities inside the device cannot be automatically cleaned, which may cause impurity accumulation, thereby affecting the normal operation and cooling effect of the system.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a negative pressure evaporative cooling system, comprising a fixed frame, an evaporative cooling box is fixedly installed inside the fixed frame, a strip groove is provided at one end inside the evaporative cooling box, a screw rod is rotatably installed inside the strip groove, a sleeve is threadedly sleeved on the surface of the screw rod, a vertical groove is provided at the other end inside the evaporative cooling box, a vertical rod is fixedly installed inside the vertical groove, a slider is movably sleeved on the surface of the vertical rod, a scraper is fixedly installed between the slider and the sleeve, and the top of the evaporative cooling box is rotatably installed. A rotating shaft and a roller are installed, the top of the screw rod passes through the evaporative cooling box and is fixedly connected to the bottom of the rotating shaft, the outer surfaces of the rotating shaft and the roller are movably sleeved with belts, a rotating rod is fixedly installed on the top of the roller, a vertical plate is fixedly installed on the top of the evaporative cooling box, a horizontal plate is fixedly installed on the top of the vertical plate, a rotating motor is fixedly installed on the top of the horizontal plate, the output end of the rotating motor passes through the horizontal plate and is fixedly connected to the top of the rotating rod, guide rails are fixedly installed on both sides of the interior of the evaporative cooling box, and the outer surface of the guide rails is movably connected to the inner surface of the scraper ring.
[0006] Preferably, a vacuum pump is fixedly installed on the top of the evaporative cooling box, an exhaust pipe is fixedly installed on one side of the vacuum pump, the bottom of the exhaust pipe passes through the evaporative cooling box and extends to the inner surface of the evaporative cooling box, an exhaust pipe is fixedly installed on the top of the vacuum pump, a pressure gauge is fixedly installed on one side of the evaporative cooling box, an ultrasonic level meter located below the pressure gauge is fixedly installed on one side of the evaporative cooling box, a display controller is fixedly installed on the top of the fixing frame, and brackets are fixedly installed at the four corners of the bottom of the fixing frame.
[0007] Preferably, a hopper is fixedly installed at the bottom of the evaporative cooling box, a vertical pipe is fixedly installed at the bottom of the hopper, the top of the vertical pipe penetrates the hopper and extends to the inner surface of the hopper, a round shaft is rotatably installed inside the vertical pipe, a flap is fixedly sleeved on the surface of the round shaft, the outer surface of the flap is movably connected to the inner surface of the vertical pipe, a connecting rod is rotatably installed on one side of the vertical pipe, one side of the connecting rod penetrates the vertical pipe and is fixedly connected to one side of the round shaft, and a driven gear is fixedly installed on one side of the connecting rod.
[0008] Preferably, a vertical plate is fixedly installed at the bottom of the hopper, a round rod is rotatably installed on one side of the vertical plate, a driving gear is fixedly installed on one side of the round rod, the outer surface of the driving gear is meshed and connected with the outer surface of the driven gear, and an adjusting motor is fixedly installed on the other side of the vertical plate, and the output end of the adjusting motor passes through the vertical plate and is fixedly connected to one side of the round rod.
[0009] Preferably, a serpentine cooling tube is fixedly installed inside the evaporative cooling box, a liquid inlet pipe is fixedly installed on one side of the evaporative cooling box, one side of the liquid inlet pipe passes through the evaporative cooling box and is fixedly connected to one side of the serpentine cooling tube, a liquid outlet pipe is fixedly installed on the other side of the evaporative cooling box, one side of the liquid outlet pipe passes through the evaporative cooling box and is fixedly connected to the other side of the serpentine cooling tube.
[0010] Preferably, an inlet pipe is fixedly installed on one side of the evaporative cooling box, one side of the inlet pipe penetrates the evaporative cooling box and extends to the inner surface of the evaporative cooling box, and an outlet pipe is fixedly installed on the other side of the evaporative cooling box, one side of the outlet pipe penetrates the evaporative cooling box and extends to the inner surface of the evaporative cooling box, the surfaces of the inlet pipe and the outlet pipe are both fixedly sleeved with flanges, and the surfaces of the flanges are surrounded by screw holes.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] In the process of daily use of the negative pressure evaporative cooling system, the operator starts the rotating motor, and the operation of the rotating motor causes the rotating rod to rotate, and then the rotating rod drives the roller to rotate, and then the roller drives the belt to rotate, at this time the belt drives the rotating shaft to rotate, and then the rotating shaft drives the screw rod to rotate, and then the screw rod drives the sliding sleeve to slide inside the strip groove, and at the same time the sliding sleeve drives the scraping ring to slide on the surface of the guide rail, and then the scraping ring drives the slider to slide inside the vertical groove and on the surface of the vertical rod, and then the scraping ring slides inside the evaporative cooling box, so that impurities on the inner wall of the evaporative cooling box can be scraped off to the inside of the hopper, and the impurities can be automatically cleaned, thereby improving the efficiency of heat transfer, thereby improving the efficiency of cooling.
[0013] In the daily use of the negative pressure evaporative cooling system, the operator starts the regulating motor, and the operation of the regulating motor causes the round rod to rotate, and then the round rod drives the driving gear to rotate, and then the driving gear drives the driven gear to rotate, and then the driven gear drives the connecting rod to rotate, and at the same time the connecting rod drives the round shaft to rotate, and then the round shaft drives the flap to flip inside the vertical pipe, and then the impurities fall through the vertical pipe to the bottom of the hopper, so that the impurities can be automatically cleaned. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a front view of the present invention;
[0015] Figure 2 is a side sectional view of the present invention;
[0016] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle part;
[0017] Figure 4 For the present invention Figure 2 A partial enlarged view of point B in the middle;
[0018] Figure 5 It is a front cross-sectional view of the present invention;
[0019] Figure 6 A bottom view of the present invention;
[0020] Figure 7 For the present invention Figure 6 A partial enlarged view of point C in the middle;
[0021] Figure 8 It is a schematic diagram of the top structure of the evaporative cooling box of the present invention.
[0022] In the figure: 1, fixed frame; 2, evaporative cooling box; 3, strip groove; 4, screw rod; 5, sliding sleeve; 6, vertical groove; 7, vertical rod; 8, slider; 9, scraper; 10, rotating shaft; 11, roller; 12, belt; 13, rotating rod; 14, vertical plate; 15, horizontal plate; 16, rotating motor; 17, guide rail; 18, hopper; 19, vertical pipe; 20, round shaft; 21, flap; 22, connecting rod; 2 3. Driven gear; 24. Vertical plate; 25. Round rod; 26. Driving gear; 27. Adjusting motor; 28. Vacuum pump; 29. Exhaust pipe; 30. Exhaust pipe; 31. Serpentine cooling pipe; 32. Liquid inlet pipe; 33. Liquid outlet pipe; 34. Inlet pipe; 35. Outlet pipe; 36. Flange; 37. Screw hole; 38. Pressure gauge; 39. Ultrasonic level meter; 40. Display controller; 41. Bracket. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0024] See also Figure 1-8The present invention provides a technical solution: a negative pressure evaporative cooling system, including a fixed frame 1, an evaporative cooling box 2 is fixedly installed inside the fixed frame 1, the evaporative cooling box 2 can provide a reaction space for cooling evaporation, a strip groove 3 is opened at one end of the interior of the evaporative cooling box 2, a screw rod 4 is rotatably installed inside the strip groove 3, a sleeve 5 is threadedly sleeved on the surface of the screw rod 4, and the sleeve 5 is driven to slide inside the strip groove 3 when the screw rod 4 rotates, a vertical groove 6 is opened at the other end of the interior of the evaporative cooling box 2, a vertical rod 7 is fixedly installed inside the vertical groove 6, a slider 8 is movably sleeved on the surface of the vertical rod 7, the inner surface of the slider 8 and the outer surface of the vertical rod 7 are both smooth, so that the slider 8 can slide more smoothly on the surface of the vertical rod 7, reducing the occurrence of jamming, and the slider A scraper ring 9 is fixedly installed between 8 and the sliding sleeve 5. When the sliding sleeve 5 slides, it will drive the scraper ring 9 to slide, and then drive the slider 8 to slide through the scraper ring 9, and the impurities on the inner wall of the evaporative cooling box 2 can be scraped into the inside of the hopper 18 through the scraper ring 9. The top of the evaporative cooling box 2 is rotatably installed with a rotating shaft 10 and a roller 11. The top of the screw rod 4 penetrates the evaporative cooling box 2 and is fixedly connected to the bottom of the rotating shaft 10. When the rotating shaft 10 rotates, it will drive the screw rod 4 to rotate. The outer surfaces of the rotating shaft 10 and the roller 11 are movably sleeved with a belt 12. When the roller 11 rotates, it will drive the belt 12 to rotate, and then drive the rotating shaft 10 to rotate. A rotating rod 13 is fixedly installed on the top of the roller 11. When the rotating rod 13 rotates, it will drive the roller 11 to rotate. The evaporative cooling A vertical plate 14 is fixedly installed on the top of the cooling box 2, a horizontal plate 15 is fixedly installed on the top of the vertical plate 14, a rotating motor 16 is fixedly installed on the top of the horizontal plate 15, the output end of the rotating motor 16 passes through the horizontal plate 15 and is fixedly connected to the top of the rotating rod 13, and the rotating motor 16 causes the rotating rod 13 to rotate when it is running. Guide rails 17 are fixedly installed on both sides of the interior of the evaporative cooling box 2, and the outer surface of the guide rail 17 is movably connected to the inner surface of the scraper ring 9. The outer surface of the guide rail 17 and the inner surface of the scraper ring 9 are both smooth, so that the scraper ring 9 can slide more smoothly on the surface of the guide rail 17, reducing the occurrence of jamming. At the same time, the guide rail 17 can make the sliding of the scraper ring 9 more stable. A vacuum pump 28 is fixedly installed on the top of the evaporative cooling box 2. The vacuum pump 28 refers to a vacuum pump that uses A device or apparatus that obtains a vacuum by mechanically, physically, chemically or physically and chemically evacuating the evacuated container. In layman's terms, the vacuum pump 28 is a device that uses various methods to improve, generate and maintain a vacuum in a closed space. An exhaust pipe 29 is fixedly installed on one side of the vacuum pump 28. The bottom of the exhaust pipe 29 passes through the evaporative cooling box 2 and extends to the inner surface of the evaporative cooling box 2. When the vacuum pump 28 is running, the air inside the evaporative cooling box 2 will be extracted through the exhaust pipe 29. The air pressure in the evaporative cooling box 2 gradually decreases, and the boiling point of water decreases accordingly. Subsequently, the water in the evaporative cooling box 2 begins to evaporate at a lower temperature. The evaporation process absorbs a large amount of heat, causing the temperature in the evaporative cooling box 2 to drop. An exhaust pipe 30 is fixedly installed on the top of the vacuum pump 28.The extracted gas will be discharged through the outlet pipe 30. A pressure gauge 38 is fixedly installed on one side of the evaporative cooling box 2. The pressure gauge 38 is a pressure measuring instrument, which is mainly used to measure the pressure of the liquid inside the evaporative cooling box 2. It takes the atmospheric pressure as a reference and can measure values less than or greater than the atmospheric pressure. The pressure inside the evaporative cooling box 2 can be monitored in real time through the pressure gauge 38, which helps to ensure that the internal pressure of the evaporative cooling box 2 is stable within the designed negative pressure range and ensure the normal progress of the evaporative cooling process. If the pressure changes abnormally, such as the absolute value of the pressure is too large or too small, the operator can find the problem in time to avoid pressure problems such as cooling. In case of decreased efficiency, equipment damage or even safety accidents, an ultrasonic level meter 39 is fixedly installed on one side of the evaporative cooling box 2, which is located below the pressure gauge 38. The ultrasonic level meter 39 is a digital level meter controlled by a microprocessor. During the measurement, ultrasonic pulses are emitted by the sensor transducer, and the sound waves are reflected by the liquid surface and received by the same sensor. They are converted into electrical signals by piezoelectric crystals, and the distance from the sensor to the surface of the measured liquid is calculated by the time between the emission and reception of the sound waves. It has high measurement accuracy and stability, can achieve millimeter-level liquid level measurement, has a wide measurement range, can be used for the measurement of liquid, powder and other objects, has strong adaptability, and has a simple structure. The display controller 40 is fixedly mounted on the top of the fixed frame 1, and the display controller 40 contains a PLC controller. The PLC controller is a digital operation electronic system specially designed for use in industrial environments. It uses a programmable memory to store instructions for performing logical operations, sequential control, timing, counting and arithmetic operations, etc. It controls various types of mechanical equipment or production processes through digital or analog input and output. It uses modern large-scale integrated circuit technology. The PLC controller is Various measures have been taken in both hardware and software to improve its reliability. In terms of hardware, the PLC controller shields the main components such as the power transformer, CPU, and programmer to prevent external interference, uses a filter network to eliminate high-frequency interference in the power supply system and input lines, and uses multi-stage filtering and regulators to adjust the power supply required by the CPU to adapt to power grid fluctuations. In terms of software, the PLC controller regularly detects the external environment through a monitoring program, handles faults in a timely manner, and sets a monitoring timer to prevent the program from entering an infinite loop, thereby improving the degree of intelligence. Brackets 41 are fixedly installed at the four corners of the bottom of the fixed frame 1. The design of the bracket 41 can make it more stable.
[0025] A hopper 18 is fixedly installed at the bottom of the evaporative cooling box 2, and the hopper 18 can store impurities. A vertical pipe 19 is fixedly installed at the bottom of the hopper 18. The top of the vertical pipe 19 penetrates the hopper 18 and extends to the inner surface of the hopper 18. Impurities can be discharged through the vertical pipe 19. A circular shaft 20 is rotatably installed inside the vertical pipe 19. A flap 21 is fixedly sleeved on the surface of the circular shaft 20. The outer surface of the flap 21 is movably connected to the inner surface of the vertical pipe 19. When the circular shaft 20 rotates, it will drive the flap 21 to rotate inside the vertical pipe 19, thereby opening and closing the vertical pipe 19. A connecting rod 22 is rotatably installed on one side of the vertical pipe 19. One side of the connecting rod 22 penetrates the vertical pipe 19 and is fixedly connected to one side of the circular shaft 20. When the connecting rod 22 rotates, it will drive the circular shaft 2 0 rotates, and a driven gear 23 is fixedly installed on one side of the connecting rod 22. When the driven gear 23 rotates, it drives the connecting rod 22 to rotate. A vertical plate 24 is fixedly installed at the bottom of the hopper 18. A round rod 25 is rotatably installed on one side of the vertical plate 24. A driving gear 26 is fixedly installed on one side of the round rod 25. When the round rod 25 rotates, it drives the driving gear 26 to rotate. The outer surface of the driving gear 26 is meshed and connected with the outer surface of the driven gear 23. When the driving gear 26 rotates, it drives the driven gear 23 to rotate. An adjusting motor 27 is fixedly installed on the other side of the vertical plate 24, and the output end of the adjusting motor 27 passes through the vertical plate 24 and is fixedly connected to one side of the round rod 25. When the adjusting motor 27 is running, it causes the round rod 25 to rotate. A serpentine cooling tube 31 is fixedly installed inside the evaporative cooling box 2. The serpentine cooling tube 31 can increase the contact area with the cooling body inside the evaporative cooling box 2, thereby improving the efficiency of evaporative heat dissipation. A liquid inlet pipe 32 is fixedly installed on one side of the evaporative cooling box 2. One side of the liquid inlet pipe 32 penetrates the evaporative cooling box 2 and is fixedly connected to one side of the serpentine cooling tube 31. Cooling water can enter the interior of the serpentine cooling tube 31 through the liquid inlet pipe 32 and circulate. A liquid outlet pipe 33 is fixedly installed on the other side of the evaporative cooling box 2. One side of the liquid outlet pipe 33 penetrates the evaporative cooling box 2 and is fixedly connected to the other side of the serpentine cooling tube 31. The circulating water will be discharged through the liquid outlet pipe 33. The liquid inlet pipe 32 and the liquid outlet pipe 33 can be connected to a container filled with cooling water. The cooling water is continuously circulated in the liquid inlet pipe 32, the serpentine cooling pipe 31 and the liquid outlet pipe 33 through a circulating pump, thereby improving the cooling efficiency. An inlet pipe 34 is fixedly installed on one side of the evaporative cooling box 2. One side of the inlet pipe 34 penetrates the evaporative cooling box 2 and extends to the inner surface of the evaporative cooling box 2. The cooling medium can enter the interior of the evaporative cooling box 2 through the inlet pipe 34. An outlet pipe 35 is fixedly installed on the other side of the evaporative cooling box 2. One side of the outlet pipe 35 penetrates the evaporative cooling box 2 and extends to the inner surface of the evaporative cooling box 2. The cooling medium can be discharged through the outlet pipe 35. The surfaces of the inlet pipe 34 and the outlet pipe 35 are fixedly sleeved with flanges 36, and the surfaces of the flanges 36 are surrounded by screw holes 37.Since the flange 36 and the screw hole 37 are designed to be fastened by bolts, a higher bonding strength can be provided, which is suitable for pipeline systems that need to withstand greater pressures. It can provide reliable connection and sealing, and is easy to maintain and replace.
[0026] Working principle: First, the operator connects the rotating motor 16, the regulating motor 27, the vacuum pump 28, the pressure gauge 38, the ultrasonic level meter 39 and the display controller 40 through the wires, and then the cooling medium water can be placed inside the evaporative cooling box 2 through the inlet pipe 34, and then the vacuum pump 28 is started. The operation of the vacuum pump 28 will extract the air inside the evaporative cooling box 2 through the exhaust pipe 29, and the air pressure in the evaporative cooling box 2 will gradually decrease, and the boiling point of water will decrease accordingly. Then the water in the evaporative cooling box 2 begins to evaporate at a lower temperature, and the evaporation The process absorbs a lot of heat, causing the temperature in the evaporative cooling box 2 to drop. At this time, the cooling water flows to the inside of the serpentine cooling tube 31 through the liquid inlet pipe 32 and circulates continuously, and then is discharged through the liquid outlet pipe 33, taking away the heat generated by evaporation, further enhancing the cooling effect. At the same time, the ultrasonic liquid level meter 39 can monitor the water level. When the water level is too low, water can be replenished to ensure the normal operation of the device. The pressure in the device can also be monitored in real time through the pressure gauge 38. Next, the operator starts the rotating motor 16. The operation of the rotating motor 16 will cause the rotating rod 13 to rotate. , then the rotating rod 13 will drive the roller 11 to rotate, and then the roller 11 will drive the belt 12 to rotate, at this time the belt 12 will drive the rotating shaft 10 to rotate, and then the rotating shaft 10 will drive the screw rod 4 to rotate, and then the screw rod 4 will drive the sliding sleeve 5 to slide inside the strip groove 3, and at the same time the sliding sleeve 5 will drive the scraper ring 9 to slide on the surface of the guide rail 17, and then the scraper ring 9 will drive the slider 8 to slide inside the vertical groove 6 and on the surface of the vertical rod 7, and then the scraper ring 9 will slide inside the evaporative cooling box 2, so that the impurities on the inner wall of the evaporative cooling box 2 can be removed. The impurities are scraped into the interior of the hopper 18, and finally the regulating motor 27 is started. The operation of the regulating motor 27 will cause the round rod 25 to rotate, and then the round rod 25 will drive the driving gear 26 to rotate. At this time, the driving gear 26 will drive the driven gear 23 to rotate, and then the driven gear 23 will drive the connecting rod 22 to rotate. At the same time, the connecting rod 22 will drive the round shaft 20 to rotate, and then the round shaft 20 will drive the flap 21 to flip inside the vertical pipe 19, and then the impurities will fall to the bottom of the hopper 18 through the vertical pipe 19, so that the impurities can be automatically cleaned.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A negative pressure evaporative cooling system, comprising a fixing frame (1), characterized in that: An evaporative cooling box (2) is fixedly installed inside the fixed frame (1), a strip groove (3) is provided at one end inside the evaporative cooling box (2), a screw rod (4) is rotatably installed inside the strip groove (3), a sleeve (5) is threadedly sleeved on the surface of the screw rod (4), a vertical groove (6) is provided at the other end inside the evaporative cooling box (2), a vertical rod (7) is fixedly installed inside the vertical groove (6), a slider (8) is movably sleeved on the surface of the vertical rod (7), a scraper ring (9) is fixedly installed between the slider (8) and the sleeve (5), a rotating shaft (10) and a roller (11) are rotatably installed on the top of the evaporative cooling box (2), and the top of the screw rod (4) passes through the evaporative cooling box. (2) and is fixedly connected to the bottom of the rotating shaft (10); the rotating shaft (10) and the outer surface of the roller (11) are movably sleeved with a belt (12); the top of the roller (11) is fixedly installed with a rotating rod (13); the top of the evaporative cooling box (2) is fixedly installed with a vertical plate (14); the top of the vertical plate (14) is fixedly installed with a horizontal plate (15); the top of the horizontal plate (15) is fixedly installed with a rotating motor (16); the output end of the rotating motor (16) passes through the horizontal plate (15) and is fixedly connected to the top of the rotating rod (13); guide rails (17) are fixedly installed on both sides of the interior of the evaporative cooling box (2), and the outer surface of the guide rails (17) is movably connected to the inner surface of the scraper ring (9).
2. A negative pressure evaporative cooling system according to claim 1, characterized in that: A vacuum pump (28) is fixedly mounted on the top of the evaporative cooling box (2), an exhaust pipe (29) is fixedly mounted on one side of the vacuum pump (28), the bottom of the exhaust pipe (29) passes through the evaporative cooling box (2) and extends to the inner surface of the evaporative cooling box (2), an exhaust pipe (30) is fixedly mounted on the top of the vacuum pump (28), a pressure gauge (38) is fixedly mounted on one side of the evaporative cooling box (2), an ultrasonic level meter (39) located below the pressure gauge (38) is fixedly mounted on one side of the evaporative cooling box (2), a display controller (40) is fixedly mounted on the top of the fixing frame (1), and brackets (41) are fixedly mounted at the four corners of the bottom of the fixing frame (1).
3. A negative pressure evaporative cooling system according to claim 1, characterized in that: A hopper (18) is fixedly mounted on the bottom of the evaporative cooling box (2), a vertical pipe (19) is fixedly mounted on the bottom of the hopper (18), the top of the vertical pipe (19) penetrates the hopper (18) and extends to the inner surface of the hopper (18), a round shaft (20) is rotatably mounted inside the vertical pipe (19), a flap (21) is fixedly sleeved on the surface of the round shaft (20), the outer surface of the flap (21) is movably connected to the inner surface of the vertical pipe (19), a connecting rod (22) is rotatably mounted on one side of the vertical pipe (19), one side of the connecting rod (22) penetrates the vertical pipe (19) and is fixedly connected to one side of the round shaft (20), and a driven gear (23) is fixedly mounted on one side of the connecting rod (22).
4. A negative pressure evaporative cooling system according to claim 3, characterized in that: A vertical plate (24) is fixedly mounted at the bottom of the hopper (18); a round rod (25) is rotatably mounted on one side of the vertical plate (24); a driving gear (26) is fixedly mounted on one side of the round rod (25); the outer surface of the driving gear (26) is meshingly connected with the outer surface of the driven gear (23); an adjusting motor (27) is fixedly mounted on the other side of the vertical plate (24); and the output end of the adjusting motor (27) passes through the vertical plate (24) and is fixedly connected to one side of the round rod (25).
5. The negative pressure evaporative cooling system according to claim 1, characterized in that: A serpentine cooling pipe (31) is fixedly installed inside the evaporative cooling box (2), a liquid inlet pipe (32) is fixedly installed on one side of the evaporative cooling box (2), one side of the liquid inlet pipe (32) passes through the evaporative cooling box (2) and is fixedly connected to one side of the serpentine cooling pipe (31), and a liquid outlet pipe (33) is fixedly installed on the other side of the evaporative cooling box (2), one side of the liquid outlet pipe (33) passes through the evaporative cooling box (2) and is fixedly connected to the other side of the serpentine cooling pipe (31).
6. The negative pressure evaporative cooling system according to claim 1, characterized in that: An inlet pipe (34) is fixedly mounted on one side of the evaporative cooling box (2), one side of the inlet pipe (34) penetrates the evaporative cooling box (2) and extends to the inner surface of the evaporative cooling box (2), an outlet pipe (35) is fixedly mounted on the other side of the evaporative cooling box (2), one side of the outlet pipe (35) penetrates the evaporative cooling box (2) and extends to the inner surface of the evaporative cooling box (2), flanges (36) are fixedly sleeved on the surfaces of the inlet pipe (34) and the outlet pipe (35), and screw holes (37) are arranged around the surfaces of the flanges (36).