Multilayer spraying device for closed cooling tower

Abstract

The present application relates to cooling tower spray technical field, specifically to a kind of multilayer spray device of closed cooling tower, comprising: cooling tower main body, cooling tower main body is equipped with cooling frame mechanism, the upper portion of cooling frame mechanism is equipped with spray mechanism, and the protective guardrail is fixed on cooling tower main body.The present application is by controlling the current size into refrigeration device, to adapt to different temperature high-temperature circulating water, the current of refrigeration device into and high-temperature circulating water temperature are directly proportional, the higher temperature, the greater refrigeration capacity, the lower temperature of cooling water, and the current size into electromagnetic block and the temperature of high-temperature circulating water in hot water pipeline are inversely proportional, when high-temperature circulating water temperature is higher, the current into electromagnetic block is smaller, increase the storage capacity of water tank to cooling water, can reduce hot steam generation, under the premise of not affecting spray cooling, prevent hot steam influence heat exchange efficiency, reduce cooling water consumption speed, realized to different temperature high-temperature circulating water's accurate efficient cooling.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cooling tower spraying technology, in particular to a multi-layer spraying device of a closed cooling tower. BACKGROUND

[0002] The multi-layer spraying device refers to a device that realizes layered spraying cooling of heat exchange medium (such as circulating water) in the cooling tower through the design of a multi-layer spraying structure, which is specially designed for a closed cooling tower. The closed cooling tower exchanges heat with the outside air through a closed circulating water system to avoid direct contact of the circulating water with external pollutants, and is commonly used in industrial scenes with high water quality requirements to cool high-temperature circulating water. The core of the device is to optimize cooling efficiency and improve heat exchange efficiency by using a multi-layer spraying layout.

[0003] In actual life, high-temperature circulating water entering the pipeline has various causes and presents significant differences in temperature state. The existing spraying device generally uses fixed-temperature spraying water for cooling. This "one-size-fits-all" cooling mode leads to excessive consumption of water resources and significantly increases cooling costs when dealing with low-temperature high-temperature circulating water because the spraying water temperature setting does not meet the actual demand. When facing high-temperature circulating water, high temperature accelerates the evaporation of spraying water, resulting in the generation of a large amount of water vapor, which not only requires frequent replenishment of cooling water but also reduces heat exchange efficiency.

[0004] In addition, water quality factors also seriously affect the cooling effect. When the content of minerals such as calcium and magnesium ions in water is high, the outer surface of the hot water pipeline in the cooling frame mechanism is prone to form scale in the heat exchange process. The heat conduction performance of scale is much lower than that of metal pipelines. It is like building a heat barrier between the pipeline and the spraying water, which seriously hinders the heat transfer between the two, eventually causing the heat exchange efficiency of the entire cooling device to decrease significantly, which cannot meet the actual demand for efficient heat exchange. SUMMARY

[0005] In view of the above shortcomings of the prior art, the present application provides a multi-layer spraying device of a closed cooling tower, which can effectively solve the problem that the prior art cannot meet the actual demand for efficient heat exchange.

[0006] To achieve the above purpose, the present application realizes the following technical solutions:

[0007] The present application provides a multi-layer spraying device of a closed cooling tower, comprising: 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.

[0008] The cooling tower body comprises a sealed tower, the outer surface of the sealed tower is fixed with a motor, the inner surface of the sealed tower is symmetrically provided with an open groove, the outer surface of the sealed tower is fixed with a water pump, the input end of the water pump is fixed with a water pumping pipeline, the water pumping pipeline is provided with a refrigeration device, and the water pumping pipeline is provided with a resin column.

[0009] The spraying mechanism comprises a spraying frame fixed in the sealed tower, the spraying frame is communicated with the output end of the water pump, a plurality of flow pipes are fixedly connected in the spraying frame, a plurality of support frames are arrayed and communicated below the flow pipes, an adjusting assembly is arranged in the support frame, a sealing pipe is communicated with the lower end of the support frame, a plurality of water outlets are arrayed and formed in the outer surface of the sealing pipe, a gas-tight cover is fixed in the sealing pipe through a hydraulic telescopic rod, a sealing plate is fixed in the sealing pipe below the gas-tight cover, and a spraying head is communicated with the lower end of the sealing pipe.

[0010] Preferably, the upper end of the gas-tight cover and the sealing plate is provided with a filter hole, and the filter hole of the upper end of the sealing plate is located between the two adjacent filter holes of the gas-tight cover.

[0011] Preferably, the cooling frame mechanism comprises a plurality of hot water pipelines fixed in the sealed tower, a U-shaped connecting pipe is fixed between the two adjacent hot water pipelines, a plurality of driving assemblies are arrayed and fixed between the two adjacent hot water pipelines, and cleaning assemblies are arranged above and below the driving assemblies.

[0012] Preferably, the connection between the upper hot water pipeline and the sealed tower is an air inlet, and the connection between the lower hot water pipeline and the sealed tower is a water outlet.

[0013] Preferably, the driving assembly comprises two support plates fixed in the sealed tower, the ends of the two support plates away from each other are provided with S-shaped grooves, a reciprocating screw rod is rotatably connected between the two support plates, a plurality of reciprocating screw rods are connected in a belt transmission mode, one of the reciprocating screw rods is fixedly connected with the output end of the motor, a screw rod sleeve is arranged on the outer surface of the reciprocating screw rod, and the outer surface of the screw rod sleeve is symmetrically fixed with a connecting block.

[0014] Preferably, the cleaning assembly comprises a fixed block fixed on the connecting block, a rectangular groove is formed in 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 the end of the movable block close to the support plate, and a cleaning steel brush is fixed at the end of the movable block away from the support plate.

[0015] Preferably, the limiting rod is slidably connected in the S-shaped groove, and the cleaning steel brush always adheres to the outer surface of the hot water pipeline.

[0016] Preferably, the adjusting assembly comprises a sealing column rotatably connected in the support frame, the outer surface 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, the water storage groove is slidably connected with a water baffle, a plurality of electromagnetic blocks are fixed in the sealing column, a plurality of permanent magnets are arranged between the electromagnetic blocks and the inner wall of the sealing column, the permanent magnets are fixedly connected with the water baffles on the same side, and the permanent magnets are elastically connected with the inner wall of the sealing column.

[0017] Compared with the known prior art, the technical scheme provided by the present application has the following beneficial effects:

[0018] Firstly, by controlling the current flowing into the refrigeration device, the high-temperature circulating water of different temperatures can be adapted, the current flowing into the refrigeration device is proportional to the temperature of the high-temperature circulating water, the higher the temperature, the greater the refrigerating capacity, the lower the temperature of the cooling water, and the size of the current flowing into the electromagnetic block is inversely proportional to the temperature of the high-temperature circulating water in the hot water pipeline, the higher the temperature of the high-temperature circulating water, the smaller the current flowing into the electromagnetic block, the magnetic property of the electromagnetic block is reduced, the permanent magnet drives the water baffle to move under the elastic action, the storage capacity of the water storage groove for the cooling water is increased, the water spraying amount of the spraying head is increased, a large amount of low-temperature water is sprayed on the surface of the high-temperature hot water pipeline, the generation of hot steam is reduced, the heat exchange efficiency is prevented from being affected by the hot steam under the premise of not affecting the spraying cooling, the cooling speed of the cooling water is reduced, and precise and efficient cooling of the high-temperature circulating water of different temperatures is realized.

[0019] Secondly, by the displacement reaction of the ion exchange resin in the resin column with calcium and magnesium ions in water, the hardness components in water are removed, the water quality is softened, the generation of scale on the outer surface of the hot water pipeline is inhibited from the root, the problem of heat exchange efficiency reduction caused by scale is reduced, the service life of the device is prolonged, and the driving assembly and the cleaning assembly are arranged, after the motor is started, the rotating screw rod drives the screw rod sleeve and the connecting block to move, the cleaning steel brush is attached to the outer surface of the hot water pipeline and moves back and forth, and the cleaning steel brush swings in an S shape due to the limiting action of the S-shaped groove on the supporting plate on the limiting rod, so that the scale on the surface of the hot water pipeline can be effectively cleaned, automatic cleaning is realized, and the labor maintenance cost and frequency are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious efforts.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is the internal structure schematic view of the present application;

[0023] Figure 3 It is the internal structure schematic view of the cooling tower main body of the present application;

[0024] Figure 4 It is the cooling frame mechanism position structure schematic view of the present application;

[0025] Figure 5 It is the driving assembly structure schematic view of the present application;

[0026] Figure 6 It is the cleaning assembly internal structure schematic view of the present application;

[0027] Figure 7 It is the spraying mechanism structure schematic view of the present application;

[0028] Figure 8 It is the Figure 7 enlarged view of A in the figure;

[0029] Figure 9 It is the internal structure schematic view of the adjusting assembly of the present application.

[0030] Reference signs: 1, cooling tower main body; 2, cooling frame mechanism; 3, spraying mechanism; 4, protective guardrail; 11, sealed tower; 12, open slot; 13, water pumping pump; 14, water pumping pipeline; 15, air extractor; 21, hot water pipeline; 22, U-shaped connecting pipeline; 23, driving assembly; 24, cleaning assembly; 231, support plate; 232, S-shaped slot; 233, reciprocating screw rod; 234, screw rod sleeve; 235, connecting block; 241, fixed block; 242, rectangular slot; 243, movable block; 244, elastic member; 245, limiting rod; 246, cleaning steel brush; 31, spraying frame; 32, flow pipeline; 33, support frame; 34, adjusting assembly; 35, sealed pipeline; 36, water outlet hole; 37, air-tight cover; 38, sealing plate; 39, spraying head; 341, sealing column; 342, water storage groove; 343, inclined chute; 344, water baffle; 345, electromagnetic block; 346, permanent magnet block. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the present application.

[0032] The application will be further described in connection with the following examples.

[0033] Embodiment: Reference Figures 1 to 9 The application relates to a multilayer spraying device of a closed cooling tower, which comprises a cooling tower body 1, a cooling frame mechanism 2 arranged in the cooling tower body 1, a spraying mechanism 3 arranged above the cooling frame mechanism 2, and a protective guard 4 fixed on the cooling tower body 1.

[0034] The cooling tower body 1 comprises a sealed tower 11, a motor is fixed on the outer surface of the sealed tower 11, open grooves 12 are symmetrically arranged on the inner surface of the sealed tower 11, a water pumping pump 13 is fixed on the outer surface of the sealed tower 11, a water pumping pipeline 14 is fixed on the input end of the water pumping pump 13, a refrigerating device is arranged in the water pumping pipeline 14, resin columns are fixed in the pipeline through which water flows in the water pumping pipeline 14, and a draught fan 15 is symmetrically fixed on the upper end of the sealed tower 11.

[0035] Further description, in order to cooperate with the spraying mechanism 3 to spray and cool the high-temperature circulating water, the following settings are made, as shown in the figure, Figure 4 The cooling frame mechanism 2 comprises a plurality of hot water pipelines 21 fixed in the sealed tower 11, the hot water pipeline 21 located at the upper position is connected with the sealed tower 11 at the air inlet, the hot water pipeline 21 located at the lower position is connected with the sealed tower 11 at the water outlet, a U-shaped connecting pipe 22 is fixed between the two adjacent hot water pipelines 21, a plurality of driving assemblies 23 are fixed between the two adjacent hot water pipelines 21 in an array, and cleaning assemblies 24 are arranged on the upper and lower sides of the driving assembly 23.

[0036] Further description, in order to cooperate with the cleaning assembly 24 to clean the scale on the surface of the hot water pipeline 21, the following settings are made, as shown in the figure, Figure 5 The driving assembly 23 comprises two support plates 231 fixed in the sealed tower 11, S-shaped grooves 232 are arranged on the ends of the two support plates 231 away from each other, a reciprocating screw rod 233 is rotatably connected between the two support plates 231 in the sealed tower 11, a plurality of reciprocating screw rods 233 are connected through a belt transmission, one reciprocating screw rod 233 is fixedly connected with the output end of the motor, a screw rod sleeve 234 is arranged on the outer surface of the reciprocating screw rod 233, and connecting blocks 235 are symmetrically fixed on the outer surface of the screw rod sleeve 234.

[0037] Further description, in order to cooperate with the driving assembly 23 to clean the scale on the surface of the hot water pipeline 21, the following settings are made, as shown in the figure, Figure 6As shown, the cleaning assembly 24 includes a fixed block 241 fixed on the connecting block 235, a rectangular groove 242 is opened at the upper end of the fixed block 241, a movable block 243 is slidably connected in the rectangular groove 242, a 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 at 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, a cleaning steel brush 246 is fixed at the end of the movable block 243 away from the support plate 231, the cleaning steel brush 246 always adheres to the outer surface of the hot water pipeline 21;

[0038] It should be noted that the starting motor drives the plurality of reciprocating screw rods 233 therein to rotate simultaneously, the reciprocating screw rods 233 rotate to mobilize the screw rod sleeves 234 and the connecting block 235 to move simultaneously, the cleaning steel brush 246 in contact with the surface of the hot water pipeline 21 reciprocates with the screw rod sleeve 234, the limiting rod 245 fixedly connected with the cleaning steel brush 246 reciprocates with the fixed block 241, and due to the limiting action of the S-shaped groove 232, the limiting rod 245 drives the cleaning steel brush 246 to swing in an S shape during movement, so that the steel wires on the cleaning steel brush 246 can better clean the scale formed on the surface of the hot water pipeline 21.

[0039] Further, in order to cooperate with the cooling rack mechanism 2 to spray and cool the high-temperature circulating water, the following settings are made, as shown in Figure 7 and Figure 8 As shown, the spraying mechanism 3 includes a spraying rack 31 fixed in the sealed tower 11, the spraying rack 31 is connected with the output end of the water pump 13, a plurality of flow pipes 32 are fixedly connected in the spraying rack 31, a plurality of support racks 33 are arrayed and communicated below the flow pipes 32, an adjusting assembly 34 is arranged in the support rack 33, a sealed pipe 35 is communicated at the lower end of the support rack 33, a plurality of water outlets 36 are arrayed and opened on the outer surface of the sealed pipe 35, a gas-tight cover 37 is fixed in the sealed pipe 35 through a hydraulic telescopic rod, a sealing plate 38 is arranged below the gas-tight cover 37 and fixed in the sealed pipe 35, a filter hole is opened at the upper end of the gas-tight cover 37 and the sealing plate 38, the filter hole at the upper end of the sealing plate 38 is located between the adjacent two filter holes of the gas-tight cover 37, and a spraying head 39 is communicated at the lower end of the sealed pipe 35.

[0040] Specifically, when the device cleans the scale on the surface of the hot water pipeline 21, a large amount of cooling water enters the sealed pipe 35, the hydraulic telescopic rod is started to push the gas-tight cover 37 to move downward, so that the water outlet 36 is in contact with the sealing plate 38, due to the opening positions of the filter holes on the gas-tight cover 37 and the sealing plate 38, the sealed pipe 35 and the spraying head 39 are gas-tightly blocked, so that the cooling water in the sealed pipe 35 can only be discharged downward through the water outlet 36, so that the cooling water is not in the form of water mist, but directly in the form of water column splashing to the surface of the hot water pipeline 21, cooperating with the cleaning steel brush 246 to clean the scale on the surface of the hot water pipeline 21.

[0041] Further illustrate, in order to adjust the amount of water sprayed by the adjusting assembly 34, the following settings are made, such as Figure 9 As shown, the adjusting assembly 34 comprises a sealing column 341 rotatably connected in the support frame 33, the outer surface of the sealing column 341 is arrayed with a plurality of water storage grooves 342, one side of the inner wall of the water storage groove 342 is opened with an inclined groove 343, the water storage groove 342 is slidably connected with a water baffle 344, a plurality of electromagnetic blocks 345 are fixed in the sealing column 341, a plurality of permanent magnets 346 are arranged between the electromagnetic blocks 345 and the inner wall of the sealing column 341, the permanent magnets 346 are respectively fixedly connected with the water baffles 344 located on the same side, and the permanent magnets 346 are elastically connected with the inner wall of the sealing column 341;

[0042] It should be noted that the current flowing into the electromagnetic block 345 is inversely proportional to the temperature of the high-temperature circulating water in the hot water pipeline 21, and the current flowing into the refrigeration device is proportional to the temperature of the high-temperature circulating water in the hot water pipeline 21, that is, when the temperature of the high-temperature circulating water in the hot water pipeline 21 is higher, the current flowing into the electromagnetic block 345 is smaller and the current flowing into the refrigeration device is larger, by reducing the current flowing into the electromagnetic block 345, the magnetic property generated by the electromagnetic block 345 can be reduced, so that the permanent magnet 346 moves to the side close to the electromagnetic block 345 under the action of elastic connection, the water baffle 344 located in the water storage groove 342 will move at the same time, thereby increasing the storage amount of the water storage groove 342 for the cooling water, increasing the amount of cooling water sprayed downward by the spray head 39, and the high-temperature circulating water in the hot water pipeline 21 can be better sprayed and cooled.

[0043] The working principle of the present application is as follows: the high-temperature circulating water that needs to be cooled by the device is discharged into the hot water pipeline 21 through the air inlet, then flows through the U-shaped connecting pipe 22 and the S-shaped flow path of the lower hot water pipeline 21, and continuously flows in the sealed tower 11 through one layer after another of the hot water pipeline 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 suction pipeline 14. The cooling water is cooled by the refrigeration device in the water suction pipeline 14 (the cooling water in the water suction pipeline 14 is cooled by the refrigeration fin in the refrigeration device. The semiconductor material is driven by electric current to produce heat absorption or heat release phenomenon, realize heat transfer, the refrigeration fin is composed of a plurality of pairs of P-type semiconductor and N-type semiconductor elements in series. When the direct current flows from the N-type semiconductor to the P-type semiconductor, the migration of electrons and holes at the N-P junction requires energy, which absorbs heat from the surrounding environment, resulting in a decrease in the temperature of the cold end. Thus, the cooling water in the water suction pipeline 14 is cooled, and the cooling capacity is positively related to the current size), and the cooling water flows in the resin column after cooling, thereby softening the cooling water (the core principle of the resin column to soften water is to remove the hardness components in the water through the displacement reaction of ion exchange resin and calcium and magnesium ions in the water, thereby realizing water quality softening), and inhibiting the generation of water scale on the outer surface of the hot water pipeline 21 at the source. The cooled and softened cooling water flows into the spraying frame 31 through the water suction pipeline 14.

[0044] And through the spray frame 31 flow filling multiple flow pipe 32, and then flow down to the support frame 33, when the cooling water into the support frame 33, will gradually fill the storage tank 342, and because the impact force generated by the flow of cooling water will hit the surface of the chute 343, so that the cooling water in filling storage tank 342 at the same time can push the whole sealing column 341 in the sealing pipe 35 rotation, and adjacent two storage tank 342 alternately with each other, when the cooling water will fill the entire storage tank 342, adjacent one storage tank 342 will be due to the rotation of the sealing column 341 and thus with the sealing pipe 35 connected, until the first storage tank 342 moves to with the sealing pipe 35 airtight plug, storage tank 342 with cooling water will be under the rotation of the sealing column 341 with the sealing pipe 35 connected (need to explain, the sealing column 341 and the support frame 33 of the connection, provided with an electromagnetic coil to adjust the friction between the sealing column 341 and the support frame 33, that is to say, when the storage capacity of storage tank 342 increases, thus resulting in the increase of the driving force, through the electromagnetic coil increases the friction between the sealing column 341 and the support frame 33, so that the sealing column 341 in the support frame 33 always constant speed rotation), when the storage in storage tank 342 of cooling water will flow down to the sealing pipe 35, and then through the air tight cover 37 and the filter hole on the filter plate 38 after the filtration, cleaning cooling water in the impurities, finally flow to the spray head 39, through the spray head 39 sprayed on the surface of the hot water pipeline 21 below, the hot water pipeline 21 in the flow of high temperature circulating water for spray cooling treatment, in the spray cooling treatment, located above the exhaust fan 15 will start, through two open slot 12 will be outside the air to the sealed tower 11, and constantly flow upward, with the downward spraying of cooling water spray head 39 take away the heat of high temperature circulating water in hot water pipeline 21, and because the high temperature circulating water in hot water pipeline 21 temperature is higher, when the cooling water spray on the surface of hot water pipeline 21, will form hot steam due to high temperature, located above the exhaust fan 15 will be hot steam from the sealed tower 11;

[0045] It needs to be explained that the current size into the electromagnetic block 345 is inversely proportional to the temperature of the high-temperature circulating water in the hot water pipeline 21, and the current size into the refrigeration device is proportional to the temperature of the high-temperature circulating water in the hot water pipeline 21, that is, when the temperature of the high-temperature circulating water in the hot water pipeline 21 is higher, the current into the electromagnetic block 345 is smaller and the current into the refrigeration device is larger. By reducing the current into the electromagnetic block 345, the magnetic size 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. The water baffle 344 in the water storage tank 342 will move with the permanent magnet block 346, thereby increasing the storage capacity of the water storage tank 342 for cooling water, increasing the amount of cooling water sprayed downward by the spray head 39, and increasing the current into the refrigeration device, which increases the refrigerating capacity of the refrigeration fin, thereby reducing the temperature of the cooling water. When a large amount of cooling water with reduced temperature is sprayed on the surface of the hot water pipeline 21 with high temperature, the hot steam generated by high temperature can be reduced, and the heat exchange efficiency of the device is not affected. At the same time, it also reduces the consumption speed of the cooling water during the operation of the device;

[0046] Even if the cooling water is softened, in long-term spraying work, the surface of the hot water pipeline 21 for high-temperature circulating water flow will still generate scale. The heat conduction efficiency of scale is lower than that of metal. When the surface of the hot water pipeline 21 has scale, the heat exchange efficiency of the sprayed cooling water and the high-temperature circulating water will be affected. Therefore, after a period of use to generate scale, the motor needs to be started to drive the plurality of reciprocating lead screws 233 to rotate simultaneously. When the reciprocating lead screw 233 rotates, the lead screw sleeve 234 and the connecting block 235 connected thereto will move simultaneously, so that the cleaning steel brush 246 in contact with the surface of the hot water pipeline 21 will move reciprocally with the lead screw sleeve 234. The limiting rod 245 fixedly connected with the cleaning steel brush 246 will move reciprocally with the fixed block 241. Due to the limiting action of the S-shaped groove 232, the limiting rod 245 will drive the cleaning steel brush 246 to swing in S shape during 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 pipeline 21;

[0047] It should be noted that when the scale is cleaned, the power supply to the electromagnetic block 345 and the refrigeration device is stopped, the permanent magnet block 346 is attached to the surface of the electromagnetic block 345 under the elastic action, the water storage tank 342 can store the cooling water to the maximum extent, and when a large amount of cooling water enters the sealed pipe 35, the hydraulic telescopic rod is started to push the air-tight cover 37 to move downward, so that the air-tight cover 37 is in contact with the sealing plate 38. Due to the opening positions of the filter holes on the air-tight cover 37 and the sealing plate 38, the sealed pipe 35 and the spray head 39 are air-tightly blocked, so that the cooling water in the sealed pipe 35 can only be discharged downward through the water outlet hole 36, so that the cooling water is not in the form of water mist, but directly in the form of water column splashing to the surface of the hot water pipeline 21, and the cleaning steel brush 246 is used to clean the scale on the surface of the hot water pipeline 21.

[0048] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones. The modifications or replacements do not change the essence of the corresponding technical solutions, and do not deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-stage spray device for a closed cooling tower, characterized by, Include: The cooling tower body (1), the cooling tower body (1) is equipped with cooling frame mechanism (2), the upper portion of cooling frame mechanism (2) is equipped with spray mechanism (3), the cooling tower body (1) is fixed with protective guardrail (4); The cooling tower body (1) includes a sealed tower (11), the outer surface of the sealed tower (11) is fixed with a motor, the inner surface of the sealed tower (11) is symmetrically provided with an open slot (12), the outer surface of the sealed tower (11) is fixed with a water pump (13), the input end of the water pump (13) is fixed with a water pumping pipeline (14), the water pumping pipeline (14) is provided with a refrigeration device, and the water pumping pipeline (14) is fixed with a resin column in the pipeline through which the water flow flows, and the upper end of the sealed tower (11) is symmetrically fixed with an air extractor (15). The spray mechanism (3) includes a spraying frame (31) fixed in the sealed tower (11), the spraying frame (31) is connected with the output end of the water pump (13), a plurality of flow pipes (32) are fixedly connected in the spraying frame (31), a plurality of support frames (33) are arrayed and communicated below the flow pipes (32), an adjusting assembly (34) is arranged in the support frame (33), a sealed pipe (35) is communicated with the lower end of the support frame (33), a plurality of water outlets (36) are arrayed and formed in the outer surface of the sealed pipe (35), a gas-tight cover (37) is fixed in the sealed pipe (35) by a hydraulic telescopic rod, a sealing plate (38) is fixed in the sealed pipe (35) below the gas-tight cover (37), and a spray head (39) is communicated with the lower end of the sealed pipe (35). The adjusting assembly (34) includes a sealing column (341) rotatably connected in the support frame (33), a plurality of water storage grooves (342) are arrayed and formed in the outer surface of the sealing column (341), an inclined groove (343) is formed in one side of the inner wall of the water storage groove (342), a water baffle (344) is slidably connected in the water storage groove (342), a plurality of electromagnetic blocks (345) are fixed in the sealing column (341), a permanent magnet block (346) is arranged between each electromagnetic block (345) and the inner wall of the sealing column (341), the permanent magnet block (346) is fixedly connected with the water baffle (344) on the same side, and the permanent magnet block (346) is elastically connected with the inner wall of the sealing column (341).

2. A multi-stage spray arrangement for a closed cooling tower according to claim 1, wherein, The upper end of the gas-tight cover (37) and the sealing plate (38) is provided with a filter hole, and the filter hole of the sealing plate (38) is located between the adjacent two filter holes of the gas-tight cover (37).

3. A multi-stage spray arrangement for a closed cooling tower according to claim 1, wherein, The cooling frame mechanism (2) includes a plurality of hot water pipelines (21) fixed in the sealed tower (11), a U-shaped connecting pipe (22) is fixed between adjacent two hot water pipelines (21), a plurality of driving assemblies (23) are arrayed and fixed between adjacent two hot water pipelines (21), and cleaning assemblies (24) are arranged above and below the driving assemblies (23).

4. A multi-stage spray arrangement for a closed cooling tower according to claim 3, wherein, The upper hot water pipeline (21) is connected with the air inlet hole of the sealing tower (11), and the lower hot water pipeline (21) is connected with the water outlet hole of the sealing tower (11).

5. A multi-stage spray arrangement for a closed cooling tower according to claim 3, wherein, The driving assembly (23) comprises two support plates (231) fixed in the sealing tower (11), the ends of the two support plates (231) away from each other are provided with S-shaped grooves (232), and reciprocating lead screws (233) are rotationally connected between the two support plates (231) and in the sealing tower (11), the reciprocating lead screws (233) are connected in a belt transmission mode, one of the reciprocating lead screws (233) is fixedly connected with the output end of the motor, a lead screw sleeve (234) is arranged on the outer surface of the reciprocating lead screw (233), and the outer surface of the lead screw sleeve (234) is symmetrically fixed with a connecting block (235).

6. A multi-stage spray arrangement for a closed cooling tower according to claim 5 wherein, The cleaning assembly (24) comprises a fixed block (241) fixed on the connecting block (235), a rectangular groove (242) is formed in 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 end of the movable block (243) close to the support plate (231), and a cleaning steel brush (246) is fixed to the end of the movable block (243) away from the support plate (231).

7. A multi-stage spray arrangement for a closed cooling tower according to claim 6 wherein, The limiting rod (245) is slidably connected in the S-shaped groove (232), and the cleaning steel brush (246) is always attached to the outer surface of the hot water pipeline (21).

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