Multi-layer spraying device of closed cooling tower

Abstract

The invention relates to the technical field of cooling tower spraying, in particular to a multi-layer spraying device of a closed cooling tower, which comprises a cooling tower main body, a cooling frame mechanism is arranged in the cooling tower main body, a spraying mechanism is arranged above the cooling frame mechanism, and a protective guardrail is fixed on the cooling tower main body. According to the invention, the current introduced into the refrigerating device is controlled to adapt to high-temperature circulating water at different temperatures, the current introduced into the refrigerating device is in direct proportion to the temperature of the high-temperature circulating water, the higher the temperature is, the larger the refrigerating capacity is, the lower the temperature of cooling water is, and the current introduced into the electromagnetic block is in inverse proportion to the temperature of the high-temperature circulating water in the hot water pipeline; the higher the temperature of the high-temperature circulating water is, the smaller the current introduced into the electromagnetic block is, the storage amount of the cooling water in the water storage tank is increased, generation of hot steam can be reduced, on the premise that spraying cooling is not affected, the hot steam is prevented from affecting the heat exchange efficiency, the consumption speed of the cooling water is reduced, and accurate and efficient cooling of the high-temperature circulating water with different temperatures is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of cooling tower spraying, in particular to a multi-layer spraying device of a closed cooling tower. Background Art

[0002] A multi-layer spray device refers to a device that uses a multi-layer spray structure inside a cooling tower to achieve layered spray cooling of heat exchange media (such as circulating water). It is designed specifically for closed cooling towers. This type of cooling tower exchanges heat with the outside air through a closed circulating water system to avoid direct contact between the circulating water and external pollutants. It is often used in industrial scenarios with high water quality requirements to cool high-temperature circulating water that needs to be cooled. Its core lies in utilizing a multi-layer spray layout to optimize cooling efficiency and improve heat exchange efficiency.

[0003] In real life, the high-temperature circulating water entering the pipeline has different causes and its temperature state varies significantly. Existing spraying devices generally use fixed-temperature spray water for cooling. This "one-size-fits-all" cooling mode, when dealing with low-temperature circulating water, causes excessive water consumption and significantly increases cooling costs because the spray water temperature setting is not adapted to actual needs. When dealing with high-temperature circulating water, the high temperature accelerates the evaporation of the spray water, resulting in large amounts of water vapor. This not only requires frequent cooling water replenishment, but also reduces heat exchange efficiency. In addition, water quality factors also have a serious impact on the cooling effect. When the content of minerals such as calcium and magnesium ions in the water is high, scale is easily formed on the outer surface of the hot water pipe in the cooling rack mechanism during the heat exchange process. The thermal conductivity of scale is much lower than that of metal pipes. It is like building an insulating barrier between the pipe and the spray water, seriously hindering the heat transfer between the two, and ultimately causing the heat exchange efficiency of the entire cooling device to drop significantly, unable to meet the actual needs of efficient heat exchange. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a multi-layer spray device for a closed cooling tower, which can effectively solve the problem that the prior art cannot meet the actual demand for efficient heat exchange.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a multi-layer spraying device for a closed cooling tower, comprising: a cooling tower body, a cooling frame mechanism provided in the cooling tower body, a spraying mechanism provided above the cooling frame mechanism, and a protective guardrail fixed on the cooling tower body; The cooling tower body includes a sealing tower, a motor is fixed on the outer surface of the sealing tower, an open groove is symmetrically opened on the inner surface of the sealing tower, a water pump is fixed on the outer surface of the sealing tower, a water pumping pipe is fixed to the input end of the water pump, a refrigeration device is provided in the water pumping pipe, and resin columns are fixed in the pipes through which water flows in the water pumping pipe, and an exhaust fan is symmetrically fixed on the upper end of the sealing tower; The spray mechanism includes a spray rack fixed in a sealing tower, the spray rack is connected to the output end of a water pump, a plurality of flow pipes are fixedly connected in the spray rack, a plurality of support frames are connected in an array below the flow pipes, an adjustment component is provided in the support frame, the lower end of the support frame is connected to a sealing pipe, a plurality of water outlet holes are provided in an array on the outer surface of the sealing pipe, an airtight cover is fixed in the sealing pipe by a hydraulic telescopic rod, a sealing plate fixed in the sealing pipe is provided below the airtight cover, and the lower end of the sealing pipe is connected to a spray head.

[0006] Preferably, the upper ends of the airtight cover and the sealing plate are both provided with filter holes, and the filter hole on the upper end of the sealing plate is located between two adjacent filter holes on the airtight cover.

[0007] Preferably, the cooling rack mechanism includes a plurality of hot water pipes fixed in the sealing tower, a U-shaped connecting pipe is fixed between two adjacent hot water pipes, a plurality of drive components are fixed in an array between two adjacent hot water pipes, and cleaning components are provided on both the upper and lower sides of the drive components.

[0008] Preferably, the connection between the hot water pipe and the sealing tower located above is an air inlet, and the connection between the hot water pipe and the sealing tower located below is an air outlet.

[0009] Preferably, the drive assembly includes two support plates fixed in the sealing tower, and an S-shaped groove is provided at one end of the two support plates away from each other. A reciprocating screw rod rotatably connected to the sealing tower is provided between the two support plates, and multiple reciprocating screw rods are connected by belt transmission, one of the reciprocating screw rods is fixedly connected to the output end of the motor, and the outer surface of the reciprocating screw rod is provided with a screw rod sleeve, and the outer surface of the screw rod sleeve is symmetrically fixed with connecting blocks.

[0010] Preferably, the cleaning assembly includes a fixed block fixed on the connecting block, a rectangular groove is opened at the upper end of the fixed block, a movable block is slidably connected in the rectangular groove, an elastic member is fixed between the movable block and the inner wall of the rectangular groove, a limiting rod is fixed in the middle of one end of the movable block close to the support plate, and a cleaning steel brush is fixed to the end of the movable block away from the support plate.

[0011] Preferably, the limiting rod is slidably connected in the S-shaped groove, and the cleaning steel brush always fits the outer surface of the hot water pipe.

[0012] Preferably, the adjustment component includes a sealing column rotatably connected to the sealing tube, the outer surface array of the sealing column is provided with a plurality of water storage grooves, one side of the inner wall of the water storage groove is provided with an inclined groove, a water baffle is slidably connected to the water storage groove, a plurality of electromagnetic blocks are fixed in the sealing column, and permanent magnet blocks are provided between the plurality of electromagnetic blocks and the inner wall of the sealing column, the permanent magnet blocks are respectively fixedly connected to the water baffle located on the same side, and the permanent magnet blocks are elastically connected to the inner wall of the sealing column.

[0013] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: First, by controlling the current passed into the refrigeration device to adapt to high-temperature circulating water at different temperatures, the current passed into the refrigeration device is proportional to the temperature of the high-temperature circulating water. The higher the temperature, the greater the cooling capacity and the lower the cooling water temperature. The current passed into the electromagnetic block is inversely proportional to the temperature of the high-temperature circulating water in the hot water pipe. When the temperature of the high-temperature circulating water is higher, the current passed into the electromagnetic block is smaller, the magnetism of the electromagnetic block decreases, and the permanent magnet block drives the water baffle to move under the elastic action, increasing the storage capacity of the water tank for cooling water, thereby increasing the spraying water volume of the sprinkler head, so that a large amount of low-temperature water is sprayed on the surface of the high-temperature hot water pipe, which can reduce the generation of hot steam. Without affecting the spray cooling, it prevents hot steam from affecting the heat exchange efficiency, reduces the cooling water consumption rate, and realizes accurate and efficient cooling of high-temperature circulating water at different temperatures.

[0014] Secondly, the resin column can remove the hardness components in the water through the replacement reaction between the ion exchange resin and the calcium and magnesium ions in the water, so as to achieve water softening, and inhibit the formation of scale on the outer surface of the hot water pipe from the root, reducing the problem of reduced heat exchange efficiency caused by scale, and extending the service life of the device. It is also equipped with a drive component and a cleaning component. After starting the motor, the reciprocating screw rotates to drive the screw sleeve and the connecting block to move, so that the cleaning steel brush moves back and forth along the outer surface of the hot water pipe, and due to the limiting effect of the S-shaped groove on the support plate on the limit rod, the cleaning steel brush swings in an S shape, which can effectively clean the scale on the surface of the hot water pipe, realize automatic cleaning, and reduce the cost and frequency of manual maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2Schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the cooling tower body of the present invention; Figure 4 This is a schematic diagram of the cooling rack mechanism position structure of the present invention; Figure 5 This is a schematic diagram of the structure of the drive assembly of the present invention; Figure 6 This is a schematic diagram of the internal structure of the cleaning component of the present invention; Figure 7 It is a schematic structural diagram of the spray mechanism of the present invention; Figure 8 for Figure 7 A magnified view of point A in the figure; Figure 9 Schematic diagram of the internal structure of the adjustment component of the present invention.

[0017] Figure 1: 1. Cooling tower body; 2. Cooling rack mechanism; 3. Spray mechanism; 4. Protective guardrail; 11. Sealing tower; 12. Open tank; 13. Water pump; 14. Water pumping pipe; 15. Exhaust fan; 21. Hot water pipe; 22. U-shaped connecting pipe; 23. Drive assembly; 24. Cleaning assembly; 231. Support plate; 232. S-shaped groove; 233. Reciprocating screw; 234. Screw sleeve; 235. Connecting block; 241. Fixed block ; 242. Rectangular groove; 243. Movable block; 244. Elastic part; 245. Limit rod; 246. Cleaning brush; 31. Spray rack; 32. Flow pipe; 33. Support frame; 34. Adjustment assembly; 35. Sealing pipe; 36. Water outlet; 37. Airtight cover; 38. Sealing plate; 39. Spray head; 341. Sealing column; 342. Water storage tank; 343. Inclined chute; 344. Water baffle; 345. Electromagnetic block; 346. Permanent magnet block. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to the embodiments.

[0020] Example: Refer to Figures 1 to 9A multi-layer spraying device for a closed cooling tower comprises: a cooling tower body 1, a cooling frame mechanism 2 is provided in the cooling tower body 1, a spraying mechanism 3 is provided above the cooling frame mechanism 2, and a protective guardrail 4 is fixed on the cooling tower body 1; The cooling tower body 1 includes a sealing tower 11, a motor is fixed on the outer surface of the sealing tower 11, and open grooves 12 are symmetrically opened on the inner surface of the sealing tower 11. A water pump 13 is fixed on the outer surface of the sealing tower 11, and a water pumping pipe 14 is fixed to the input end of the water pump 13. A refrigeration device is provided in the water pumping pipe 14, and resin columns are fixed in the pipes through which water flows in the water pumping pipe 14. An exhaust fan 15 is symmetrically fixed at the upper end of the sealing tower 11.

[0021] Further explanation, in order to cooperate with the spraying mechanism 3 to spray and cool the high temperature circulating water, the following settings are made, such as Figure 4 As shown, the cooling rack mechanism 2 includes a plurality of hot water pipes 21 fixed in the sealing tower 11, the connection between the upper hot water pipe 21 and the sealing tower 11 is an air inlet, and the connection between the lower hot water pipe 21 and the sealing tower 11 is an air outlet. A U-shaped connecting pipe 22 is fixed between two adjacent hot water pipes 21, and a plurality of driving components 23 are fixed in an array between two adjacent hot water pipes 21, and cleaning components 24 are provided on the upper and lower sides of the driving components 23.

[0022] Further explanation, in order to cooperate with the cleaning component 24 to clean the scale on the surface of the hot water pipe 21, the following settings are made, such as Figure 5 As shown, the drive assembly 23 includes two support plates 231 fixed in the sealing tower 11, and an S-shaped groove 232 is provided at one end of the two support plates 231 away from each other. A reciprocating screw rod 233 rotatably connected to the sealing tower 11 is provided between the two support plates 231. Multiple reciprocating screw rods 233 are connected by belt transmission, one of the reciprocating screw rods 233 is fixedly connected to the output end of the motor, and the outer surface of the reciprocating screw rod 233 is provided with a screw rod sleeve 234, and the outer surface of the screw rod sleeve 234 is symmetrically fixed with a connecting block 235.

[0023] Further explanation, in order to cooperate with the driving component 23 to clean the scale on the surface of the hot water pipe 21, the following settings are made, such as Figure 6 As shown, the cleaning assembly 24 includes a fixed block 241 fixed to the connecting block 235, a rectangular groove 242 is formed at the upper end of the fixed block 241, a movable block 243 is slidably connected in the rectangular groove 242, an elastic member 244 is fixed between the movable block 243 and the inner wall of the rectangular groove 242, a limiting rod 245 is fixed to the middle of the end of the movable block 243 close to the support plate 231, the limiting rod 245 is slidably connected in the S-shaped groove 232, and a cleaning steel brush 246 is fixed to the end of the movable block 243 away from the support plate 231, and the cleaning steel brush 246 always adheres to the outer surface of the hot water pipe 21; It should be noted that the starting motor drives multiple reciprocating screws 233 to rotate simultaneously. When the reciprocating screw 233 rotates, the screw sleeve 234 and the connecting block 235 will be mobilized to move simultaneously, so that the cleaning steel brush 246 in contact with the surface of the hot water pipe 21 moves back and forth with the screw sleeve 234, and the limiting rod 245 fixedly connected to it will move back and forth with the fixed block 241. Due to the limiting effect of the S-shaped groove 232, the limiting rod 245 will drive the cleaning steel brush 246 to swing in an S shape during the movement, so that the steel wire on the cleaning steel brush 246 can better clean the scale formed on the surface of the hot water pipe 21.

[0024] To further illustrate, in order to cooperate with the cooling rack mechanism 2 to spray and cool the high-temperature circulating water, the following settings are made, such as Figure 7 and Figure 8 As shown, the spray mechanism 3 includes a spray rack 31 fixed in the sealing tower 11, the spray rack 31 is connected to the output end of the water pump 13, a plurality of flow pipes 32 are fixedly connected to the spray rack 31, and a plurality of support racks 33 are connected in an array below the flow pipes 32. An adjustment component 34 is provided in the support rack 33, and a sealing pipe 35 is connected at the lower end of the support rack 33. A plurality of water outlet holes 36 are provided in an array on the outer surface of the sealing pipe 35. An airtight cover 37 is fixed in the sealing pipe 35 by a hydraulic telescopic rod. A sealing plate 38 fixed in the sealing pipe 35 is provided below the airtight cover 37. The upper ends of the airtight cover 37 and the sealing plate 38 are both provided with filter holes. The filter hole at the upper end of the sealing plate 38 is located between two adjacent filter holes on the airtight cover 37. The lower end of the sealing pipe 35 is connected to a spray head 39. Specifically, when the device cleans the scale on the surface of the hot water pipe 21, a large amount of cooling water enters the sealing tube 35, and the hydraulic telescopic rod is started to push the airtight cover 37 downward, so that the water outlet 36 contacts the sealing plate 38. Due to the opening position of the filter holes on the airtight cover 37 and the sealing plate 38, the sealing tube 35 and the spray head 39 are hermetically sealed, so that the cooling water in the sealing tube 35 can only be discharged downward through the water outlet 36, so that the cooling water is no longer in the form of water mist, but is directly splashed onto the surface of the hot water pipe 21 in the form of a water column, and the scale on the surface of the hot water pipe 21 is cleaned in cooperation with the cleaning steel brush 246.

[0025] Further explanation, in order to adjust the amount of water sprayed by the regulating component 34, the following settings are made, such as Figure 9As shown, the adjustment assembly 34 includes a sealing column 341 rotatably connected to the sealing tube 35. The outer surface of the sealing column 341 is provided with a plurality of water storage grooves 342 in an array. One side of the inner wall of the water storage groove 342 is provided with an inclined groove 343. A water baffle 344 is slidably connected to the water storage groove 342. A plurality of electromagnetic blocks 345 are fixed in the sealing column 341. Permanent magnets 346 are provided between the plurality of electromagnetic blocks 345 and the inner wall of the sealing column 341. The permanent magnets 346 are respectively fixedly connected to the water baffle 344 located on the same side. The permanent magnets 346 are elastically connected to the inner wall of the sealing column 341. It should be noted that the magnitude of the current passed into the electromagnetic block 345 is inversely proportional to the temperature of the high-temperature circulating water in the hot water pipe 21, while the magnitude of the current passed into the refrigeration device is directly proportional to the temperature of the high-temperature circulating water in the hot water pipe 21. That is to say, when the temperature of the high-temperature circulating water in the hot water pipe 21 is higher, the current passed into the electromagnetic block 345 will be smaller and the current passed into the refrigeration device will become larger. By reducing the current passed into the electromagnetic block 345, the magnetic magnitude generated by the electromagnetic block 345 can be reduced, so that the permanent magnet block 346 moves toward the side close to the electromagnetic block 345 under the action of the elastic connection, and the water baffle 344 located in the water storage tank 342 will move simultaneously with the permanent magnet block 346, thereby increasing the storage capacity of the cooling water in the water storage tank 342, and increasing the amount of cooling water sprayed downward by the spray head 39, which can better spray and cool the high-temperature circulating water in the hot water pipe 21.

[0026] The working principle of the present invention is as follows: the high-temperature circulating water that needs to be cooled is discharged into the hot water pipe 21 through the air inlet, and then forms an S-shaped flow path with the hot water pipe 21 below through the U-shaped connecting pipe 22. The high-temperature circulating water that needs to be cooled continues to flow in the sealed tower 11 through the layers of hot water pipes 21. At this time, the water pump 13 is started to extract the cooling water at the bottom of the sealed tower 11 through the water pumping pipe 14. The cooling water will be cooled by the refrigeration device when entering the water pump 13 (the cooling water flowing into the water pumping pipe 14 is cooled by the cooling plate in the refrigeration device, and the semiconductor material is driven by electric current to absorb or release heat to achieve heat transfer. The cooling plate is composed of several pairs of P-type semiconductors and an N-type semiconductor element in series. When direct current flows from the N-type semiconductor to the P-type semiconductor, the migration of electrons and holes at the NP junction requires energy, absorbing heat from the surrounding environment, causing the cold end temperature to drop, thereby cooling the cooling water in the pumping pipe 14, and the cooling capacity is positively correlated with the current. After the cooling process, the cooling water flows in the resin column, thereby softening the cooling water (the core principle of the resin column softening water is to remove the hardness components in the water through the replacement reaction between the ion exchange resin and the calcium and magnesium ions in the water, thereby achieving water softening). This fundamentally suppresses the formation of scale on the outer surface of the hot water pipe 21. The cooling water cooled and softened through the pumping pipe 14 flows into the spray rack 31; The cooling water flows through the spray rack 31 and fills the multiple flow pipes 32, and then flows downward to the support rack 33. When the cooling water enters the support rack 33, it gradually fills the water storage tank 342. The impact force generated by the cooling water when it flows will hit the surface of the inclined tank 343, so that the cooling water can push the entire sealing column 341 to rotate in the sealing tube 35 while filling the water storage tank 342. The two adjacent water storage tanks 342 are used alternately. When the cooling water is about to fill the entire water storage tank 342, the adjacent water storage tank 341 is used alternately. The groove 342 will be connected to the sealing tube 35 due to the rotation of the sealing column 341, until the first water storage groove 342 moves to the airtight sealing tube 35, and the water storage groove 342 containing cooling water will be connected to the sealing tube 35 below under the rotation of the sealing column 341 (it should be noted that the connection between the sealing column 341 and the support frame 33 is provided with an electromagnetic coil for adjusting the friction between the sealing column 341 and the support frame 33, that is, when the water storage amount of the water storage groove 342 is increased, the driving force When the pressure increases, the electromagnetic coil increases the friction between the sealing column 341 and the support frame 33, so that the sealing column 341 always rotates at a constant speed in the support frame 33). When the cooling water stored in the water tank 342 flows downward into the sealing pipe 35, and then passes through the filter holes on the airtight cover 37 and the sealing plate 38 to clean the impurities in the cooling water, it finally flows into the spray head 39 and is sprayed on the surface of the hot water pipe 21 below through the spray head 39, thereby cooling the high-temperature circulating water flowing in the hot water pipe 21. During the spray cooling process, the exhaust fan 15 located above is started to draw outside air into the sealing tower 11 through the two open slots 12, and continuously flows upward. The cooling water sprayed downward by the spray head 39 takes away the heat of the high-temperature circulating water in the hot water pipe 21. Since the high-temperature circulating water in the hot water pipe 21 is at a high temperature, when the cooling water is sprayed on the surface of the hot water pipe 21, hot steam is formed due to the high temperature. The exhaust fan 15 located above will extract the hot steam out of the sealing tower 11. It should be noted that the magnitude of the current passed into the electromagnetic block 345 is inversely proportional to the temperature of the high-temperature circulating water in the hot water pipe 21, while the magnitude of the current passed into the refrigeration device is directly proportional to the temperature of the high-temperature circulating water in the hot water pipe 21. That is to say, when the temperature of the high-temperature circulating water in the hot water pipe 21 is higher, the current passed into the electromagnetic block 345 will be smaller and the current passed into the refrigeration device will become larger. By reducing the current passed into the electromagnetic block 345, the magnitude of the magnetism generated by the electromagnetic block 345 can be reduced, so that the permanent magnet block 346 moves to the side close to the electromagnetic block 345 under the action of the elastic connection, and is located at the water storage area. The water baffle 344 in the groove 342 will move simultaneously with the permanent magnet block 346, thereby increasing the storage capacity of the cooling water in the water storage groove 342 and increasing the amount of cooling water sprayed downward by the spray head 39. Increasing the current flowing into the refrigeration device will increase the cooling capacity of the refrigeration plate therein, thereby lowering the temperature of the cooling water. When the cooling water with a lowered temperature is sprayed in large quantities on the surface of the hot water pipe 21 with a higher temperature, it can reduce the hot steam generated by the high temperature. Under the premise of not affecting the normal spray cooling operation of the device, it prevents a large amount of hot steam from affecting the heat exchange efficiency of the device, and also reduces the consumption rate of cooling water when the device is working. Even if the cooling water is softened, scale will still form on the surface of the hot water pipe 21 for the high-temperature circulating water to flow during long-term spraying operation. The thermal conductivity of scale is lower than that of metal. When scale forms on the surface of the hot water pipe 21, it will affect the heat exchange efficiency between the cooling water and the high-temperature circulating water for spraying. Therefore, after a period of use and scale formation, it is necessary to start the motor to drive the multiple reciprocating screws 233 therein to rotate simultaneously. When the reciprocating screw 233 rotates, the screw sleeve 234 and the connecting block 235 therein are mobilized to move simultaneously, so that the cleaning brush 246 in contact with the surface of the hot water pipe 21 reciprocates with the screw sleeve 234, and the limiting rod 245 fixedly connected thereto reciprocates with the fixing block 241. Due to the limiting effect of the S-shaped groove 232, the limiting rod 245 will drive the cleaning brush 246 to swing in an S shape during the movement, so that the steel wire on the cleaning brush 246 can better clean the scale formed on the surface of the hot water pipe 21. It should be noted that when cleaning scale, the power supply to the electromagnetic block 345 and the refrigeration device will be stopped, allowing the permanent magnet block 346 to fit the surface of the electromagnetic block 345 under the action of elasticity, so that the water storage tank 342 can store cooling water to the maximum extent. When a large amount of cooling water enters the sealing tube 35, the hydraulic telescopic rod is started to push the airtight cover 37 downward, so that the airtight cover 37 contacts the sealing plate 38. Due to the opening position of the filter holes on the airtight cover 37 and the sealing plate 38, the sealing tube 35 and the spray head 39 will be airtightly blocked, so that the cooling water in the sealing tube 35 can only be discharged downward through the water outlet 36, so that the cooling water is no longer in the form of water mist, but is directly splashed onto the surface of the hot water pipe 21 in the form of a water column, and the scale on the surface of the hot water pipe 21 is cleaned in conjunction with the cleaning steel brush 246.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A multi-layer spraying device for a closed cooling tower, characterized in that: include: A cooling tower body (1), wherein a cooling frame mechanism (2) is provided in the cooling tower body (1), a spray mechanism (3) is provided above the cooling frame mechanism (2), and a protective guardrail (4) is fixed to the cooling tower body (1); The cooling tower body (1) comprises a sealing tower (11), a motor is fixed on the outer surface of the sealing tower (11), an open groove (12) is symmetrically provided on the inner surface of the sealing tower (11), a water pump (13) is fixed on the outer surface of the sealing tower (11), a water pumping pipe (14) is fixed to the input end of the water pump (13), a refrigeration device is provided in the water pumping pipe (14), and resin columns are fixed in the pipes through which water flows in the water pumping pipe (14), and an exhaust fan (15) is symmetrically fixed to the upper end of the sealing tower (11); The spray mechanism (3) comprises a spray rack (31) fixed in a sealing tower (11), the spray rack (31) being connected to the output end of a water pump (13), a plurality of flow pipes (32) being fixedly connected in the spray rack (31), a plurality of support racks (33) being connected in array below the flow pipes (32), an adjustment assembly (34) being provided in the support rack (33), a sealing pipe (35) being connected at the lower end of the support rack (33), a plurality of water outlet holes (36) being provided in array on the outer surface of the sealing pipe (35), an airtight cover (37) being fixed in the sealing pipe (35) via a hydraulic telescopic rod, a sealing plate (38) being fixed in the sealing pipe (35) being provided below the airtight cover (37), and a spray head (39) being connected at the lower end of the sealing pipe (35).

2. The multi-layer spraying device of a closed cooling tower according to claim 1, characterized in that: The upper ends of the airtight cover (37) and the sealing plate (38) are both provided with filter holes, and the filter hole on the upper end of the sealing plate (38) is located between two adjacent filter holes on the airtight cover (37).

3. The multi-layer spraying device of a closed cooling tower according to claim 1, characterized in that: The cooling rack mechanism (2) comprises a plurality of hot water pipes (21) fixed in the sealing tower (11), a U-shaped connecting pipe (22) is fixed between two adjacent hot water pipes (21), a plurality of driving components (23) are fixed in an array between two adjacent hot water pipes (21), and cleaning components (24) are provided on both the upper and lower sides of the driving components (23).

4. The multi-layer spraying device of a closed cooling tower according to claim 3, characterized in that: The connection point between the hot water pipe (21) and the sealing tower (11) located above is an air inlet, and the connection point between the hot water pipe (21) and the sealing tower (11) located below is an air outlet.

5. The multi-layer spraying device of a closed cooling tower according to claim 3, characterized in that: The driving assembly (23) comprises two support plates (231) fixed in the sealing tower (11), an S-shaped groove (232) is provided at one end of the two support plates (231) away from each other, a reciprocating screw (233) rotatably connected to the sealing tower (11) is provided between the two support plates (231), a plurality of the reciprocating screws (233) are connected by belt transmission, one of the reciprocating screws (233) is fixedly connected to the output end of the motor, a screw sleeve (234) is provided on the outer surface of the reciprocating screw (233), and a connecting block (235) is symmetrically fixed to the outer surface of the screw sleeve (234).

6. The multi-layer spraying device of a closed cooling tower according to claim 5, characterized in that: The cleaning assembly (24) includes a fixed block (241) fixed on the connecting block (235), a rectangular groove (242) is provided at the upper end of the fixed block (241), a movable block (243) is slidably connected in the rectangular groove (242), an elastic member (244) is fixed between the movable block (243) and the inner wall of the rectangular groove (242), a limiting rod (245) is fixed in the middle of one end of the movable block (243) close to the support plate (231), and a cleaning steel brush (246) is fixed at one end of the movable block (243) away from the support plate (231).

7. The multi-layer spraying device of a closed cooling tower according to claim 6, characterized in that: The limiting rod (245) is slidably connected in the S-shaped groove (232), and the cleaning steel brush (246) always adheres to the outer surface of the hot water pipe (21).

8. The multi-layer spraying device of a closed cooling tower according to claim 1, characterized in that: The regulating assembly (34) includes a sealing column (341) rotatably connected to the sealing tube (35); a plurality of water storage grooves (342) are arranged in an array on the outer surface of the sealing column (341); an inclined groove (343) is arranged on one side of the inner wall of the water storage groove (342); a water baffle (344) is slidably connected to the water storage groove (342); a plurality of electromagnetic blocks (345) are fixed in the sealing column (341); permanent magnet blocks (346) are arranged between the plurality of electromagnetic blocks (345) and the inner wall of the sealing column (341); the permanent magnet blocks (346) are respectively fixedly connected to the water baffle (344) located on the same side; and the permanent magnet blocks (346) are elastically connected to the inner wall of the sealing column (341).

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