Automatic replacement device for cooling tower pool filter screen

Abstract

The present application belongs to the technical field of automatic replacement of cooling tower pool filter screen, in particular to a kind of cooling tower pool filter screen automatic replacement device, including the shell located in pool directly above, shell fixed mounting is in cooling tower main body, cooling tower main body one side is provided with water flow sensor, filter screen belt is arranged in shell, a plurality of groups of transmission column for conducting filter screen belt are rotatably installed in shell, the drain outlet is opened in shell bottom, water spray pipe is arranged in the drain outlet directly above, conical cover is arranged in the drain outlet directly below, the circulating water flow discharged from cooling tower main body is monitored by water flow sensor, to judge whether filter screen belt is blocked, and by controlling the transmission of filter screen belt, not only realize the automatic replacement of filter screen belt in the part of cooling tower main body, but also realize the cleaning of filter screen belt by spraying tap water in the process of transmission, improve the cleaning efficiency of filter screen belt.

Description

Technical Field

[0001] This invention belongs to the field of automatic replacement technology for cooling tower water tank filter screens, specifically an automatic replacement device for cooling tower water tank filter screens. Background Technology

[0002] Cooling towers are commonly used equipment in chemical circulating water systems. Circulating cooling water flows into a water tank through the cooling tower. After being cooled in the water tank, it needs to be pumped back into the circulating cooling system. However, some impurities are generated in the cooling water during the circulation process. After long-term use, these impurities may cause blockages in the pipes. Therefore, filtration of cooling water is an essential part of the circulating cooling system.

[0003] Patent CN219091349U discloses a cooling tower filtration device, including an upper tower body, a lower tower body, a water tank, a filtration section, and a fixing section. The water tank is used to collect water filtered by the upper and lower tower bodies. The filtration section is used to filter water used by the injection molding machine. The filtration section is fixed between the upper and lower tower bodies by the fixing section, which is used to fix the filtration section to the upper and lower tower bodies. A connecting column connects the upper and lower tower bodies. This solution allows the first filter screen to be removed from between the upper and lower tower bodies by rotating the mesh frame and the lower mesh frame, facilitating the cleaning of the second filter screen by the staff and preventing clogging of the second filter screen due to impurities not being cleaned in time.

[0004] In the above solution, the filter section needs to be disassembled when cleaning the second filter screen and the first filter screen. After the second filter screen and the first filter screen are cleaned, the filter section needs to be reassembled. Therefore, the disassembly and reassembly of the filter section wastes a lot of time during the cleaning process of the second filter screen and the first filter screen, thereby reducing the cleaning efficiency of the second filter screen and the first filter screen. Secondly, the operation of the cooling tower needs to be suspended during the cleaning process, thereby reducing the operating efficiency of the cooling tower. To address this, the present invention provides an automatic filter screen replacement device for cooling tower water tanks. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides an automatic replacement device for a cooling tower water tank filter screen, including a housing located directly above the water tank, the housing being fixedly installed on the cooling tower body, a water flow sensor being provided on one side of the cooling tower body, a filter screen belt being provided inside the housing, and several sets of transmission columns for conducting the filter screen belt being rotatably installed inside the housing, a drain port being provided at the bottom of the housing, a water spray pipe being provided directly above the drain port, a conical cover being provided directly below the drain port, a drain pipe being provided at the bottom of the conical cover, several sets of spray holes being provided on the water spray pipe, the spray holes being directly facing the filter screen belt, and rubber strips being wrapped around both sides of the filter screen belt, with the rubber strips tightly attached to the inner wall of the cooling tower body; By monitoring the flow rate of circulating water discharged from the main body of the cooling tower using a water flow sensor, it can determine whether the filter belt is clogged. Furthermore, by controlling the conveying of the filter belt, not only can the filter belt inside the main body of the cooling tower be automatically replaced, but the filter belt can also be cleaned by tap water sprayed through the nozzles during the conveying process, thus improving the cleaning efficiency of the filter belt.

[0007] Preferably, a descaling assembly is provided inside the conical shroud. The descaling assembly includes a toothed ring, an annular groove is provided inside the conical shroud, the toothed ring is rotatably installed in the annular groove, meshing with the main gear of the toothed ring, the main gear is rotatably installed on the bottom of the housing, a scraper, one end of the scraper is fixedly connected to the inner ring of the toothed ring, and an L-shaped rod, the other end of the scraper is rotatably connected to the L-shaped rod, the scraper is in close contact with the inner ring of the conical shroud, and the L-shaped rod is fixedly installed inside the conical shroud. The toothed ring drives the scraper to rotate along the inner wall of the conical shroud, scraping away the dirt on the inner wall of the shroud. The scraped dirt flows out of the shroud with the falling tap water, thus not only cleaning the inner wall of the shroud, but also cleaning quickly, greatly reducing the impact on the operating efficiency of the entire cooling tower.

[0008] Preferably, the scraper includes a rotating frame, one end of which is fixedly connected to the inner ring of the toothed ring, and the other end of which is rotatably connected to an L-shaped rod. Two sets of toothed rollers are rotatably installed inside the rotating frame. A scraper belt surrounds the two sets of toothed rollers. A first bevel gear is fixedly installed on the end of one set of toothed rollers. A second bevel gear meshes with the first bevel gear. A material preparation groove is opened on the rotating frame for scraping dirt off the scraper belt. The toothed rollers mesh with several sets of teeth provided on the inner ring of the scraper belt. The outer ring of the scraper belt is in close contact with the inner wall of the conical cover. The outer ring of the second bevel gear is in close contact with the inner ring of the drain outlet. The second bevel gear is driven to rotate along the inner ring of the drain outlet. The scraper belt begins to move around the two sets of toothed rollers. The driven scraper belt passes through the material trough on the rotating frame, causing the dirt attached to the scraper belt to be scraped off by the material trough, thus cleaning the scraper belt and ensuring the cleaning effect of the scraper belt on the inner wall of the conical cover.

[0009] Preferably, the scraper also includes a scraping strip located in the material preparation trough, a screw-on sleeve fixedly connected to one end of the scraping strip, the screw-on sleeve being rotatably mounted on another set of toothed rollers, a movable block movably mounted in the material preparation trough, a guide post movably inserted into the movable block and fixedly mounted in the material preparation trough, a spring sleeved on the guide post, the scraping strip adhering to the scraping belt, the scraping strip being used to scrape off dirt attached to the scraping belt, a rectangular groove being provided on the scraping strip, a pin being provided at one end of the movable block, the pin being located in the rectangular groove, a pressure bearing shaft being provided at the other end of the movable block, an oblique boss being provided on the L-shaped rod, and the end of the pressure bearing shaft being tightly attached to the oblique boss; As the toothed ring rotates continuously, the scraper strip will constantly flip up and down, causing the dirt accumulated in the trough opening and inside the trough to be repeatedly squeezed downwards by the scraper strip, allowing the dirt to fall down quickly and be discharged from the conical cover. This prevents the dirt scraped off the scraper strip from clogging the trough opening and ensures the effectiveness of the scraper strip and the trough cleaning scraper strip.

[0010] The beneficial effects of this invention are as follows: 1. By monitoring the flow rate of circulating water discharged from the main body of the cooling tower through a water flow sensor, it can determine whether the filter belt is clogged. By controlling the conveying of the filter belt, it can not only automatically replace the filter belt inside the main body of the cooling tower, but also clean the filter belt with tap water sprayed through the nozzles during the conveying process, thereby improving the cleaning efficiency of the filter belt.

[0011] 2. During the scraping process of removing dirt from the inner wall of the conical hood, the rotating gear ring drives the rotating frame. The rotating frame, together with the toothed roller, scraper belt, first bevel gear, second bevel gear, and other components, rotates together. The other end of the rotating frame rotates around the L-shaped rod. The scraper belt scrapes off the dirt adhering to the inner wall of the conical hood. At the same time, the second bevel gear rotates against the inner ring of the drain port. The rotating second bevel gear drives a set of toothed rollers to rotate through the first bevel gear. As the set of toothed rollers rotates, the scraper belt begins to drive around the two sets of toothed rollers. The driven scraper belt passes through the material preparation groove on the rotating frame, causing the dirt adhering to the scraper belt to be scraped off by the material preparation groove, thus cleaning the scraper belt and ensuring the cleaning effect of the scraper belt on the inner wall of the conical hood.

[0012] 3. During the process of scraping dirt off the scraper belt in the material preparation tank, the scraper strip slides along the scraper belt, scraping away the dirt. At the same time, the end of the pressure shaft slides along the inclined boss and is squeezed by the inclined boss, causing the pressure shaft to push the movable block down along the guide post and compress the spring. Simultaneously, the movable block drives the pin to squeeze the inner wall of the rectangular groove, causing the scraper strip and the screw-on sleeve to flip downwards until the end of the pressure shaft is offset from the highest point of the inclined boss. Under the rebound force of the spring, the scraper strip and the screw-on sleeve flip upwards and back. Therefore, as the toothed ring rotates continuously, the scraper strip will continuously flip up and down, repeatedly squeezing the dirt accumulated at the opening and inside of the material preparation tank downwards, allowing the dirt to fall down quickly and be discharged from the conical cover quickly. This prevents the dirt scraped from the scraper belt from clogging the opening of the material preparation tank, ensuring the effectiveness of the scraper strip and the material preparation tank cleaning scraper belt. Attached Figure Description

[0013] The invention will now be further described with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 This is a cross-sectional view of the structure of the present invention.

[0016] Figure 3 This is a schematic diagram of the water spray pipe of the present invention.

[0017] Figure 4 This is a cross-sectional view of the housing, conical cover, and descaling assembly of the present invention.

[0018] Figure 5 This is a cross-sectional view of the conical cover and descaling assembly of the present invention.

[0019] Figure 6 This is a schematic diagram of the scraper of the present invention.

[0020] Figure 7 This is a cross-sectional view of the scraper and L-shaped rod assembly of the present invention.

[0021] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0022] Figure 9 This is a schematic diagram of the assembly of the scraper strip, screw sleeve, movable block, and L-shaped rod of the present invention.

[0023] In the diagram: 1. Cooling tower body; 2. Shell; 3. Water tank; 4. Filter belt; 401. Rubber strip; 5. Conveyor column; 6. Drain outlet; 7. Spray pipe; 701. Spray hole; 8. Conical cover; 801. Annular groove; 9. Drain pipe; 10. Descaling assembly; 11. Water flow sensor; 101. Gear ring; 102. Main gear; 103. Scraper; 104. L-shaped rod; 41. Angled boss; 1031. Rotating frame; 1032. Gear roller; 1033. Scraper belt; 1034. First bevel gear; 1035. Second bevel gear; 1036. Feeding trough; 1037. Scraper strip; 371. Rectangular groove; 1038. Screw-fit sleeve; 1039. Movable block; 391. Pin; 392. Pressure bearing shaft; 1040. Guide column; 1041. Spring. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example 1

[0025] like Figures 1 to 3 As shown, an automatic filter replacement device for a cooling tower water tank according to an embodiment of the present invention includes a housing 2 located directly above the water tank 3. The housing 2 is fixedly installed on the cooling tower body 1. A water flow sensor 11 is provided on one side of the cooling tower body 1. A filter belt 4 is provided inside the housing 2. Several sets of transmission columns 5 for conducting the filter belt 4 are rotatably installed inside the housing 2. A drain port 6 is provided at the bottom of the housing 2. A water spray pipe 7 is provided directly above the drain port 6. A conical cover 8 is provided directly below the drain port 6. A drain pipe 9 is provided at the bottom of the conical cover 8. Several sets of spray holes 701 are provided on the water spray pipe 7. The spray holes 701 are directly facing the filter belt 4. Rubber strips 401 are wrapped around both sides of the filter belt 4. The rubber strips 401 are tightly attached to the inner wall of the cooling tower body 1.

[0026] Specifically, the water pump is connected to end 7 of the spray pipe, and... Figure 2The middle arrow indicates the conveying direction of the filter belt 4. The inlet of the water flow sensor 11 is lower than the filter belt 4 located inside the cooling tower body 1. After the circulating water enters the cooling tower body 1, it falls directly onto the filter belt 4 inside the cooling tower body 1. The filter belt 4 filters the circulating water, and the resulting dirt remains on the filter belt 4. The filtered circulating water is then discharged into the water tank 3 through the water flow sensor 11. As the filter belt 4 continues to filter the circulating water, the mesh on the filter belt 4 becomes clogged with dirt, reducing the amount of circulating water passing through the filter belt 4. This reduces the flow rate through the water flow sensor 11. At this time, the water flow sensor 11 transmits the reduced flow signal to the controller at the back end. The controller controls a set of motors to drive a set of conveyor columns 5 to rotate. As the set of conveyor columns 5 rotates, the filter belt 4 begins to convey water. Guided by several sets of conveyor columns 5, the water inlet of the filter belt 4 inside the cooling tower body 1 is conveyed... The filter belt 4 exits the cooling tower body 1, while another part of the filter belt 4 enters the cooling tower body 1. When the filtered filter belt 4 passes under the water spray pipe 7, the water pump draws tap water into the water spray pipe 7 and sprays it onto the filter belt 4 through the spray nozzle 701. This washes away the dirt clogging the mesh of the filter belt 4 and the dirt attached to the filter belt 4. The dirt mixed with tap water falls directly into the conical shroud 8 and is then discharged through the drain pipe 9. Compared with the prior art, the water flow sensor 11 monitors the flow rate of the circulating water discharged from the cooling tower body 1 to determine whether the filter belt 4 is clogged. By controlling the conveying of the filter belt 4, not only is the filter belt 4 in the cooling tower body 1 automatically replaced, but the tap water sprayed through the spray nozzle 701 during the conveying process also cleans the filter belt 4, improving the cleaning efficiency of the filter belt 4 and not affecting the normal operation of the cooling tower during the cleaning process.

[0027] like Figure 4 and Figure 5 As shown, a descaling assembly 10 is provided inside the conical cover 8. The descaling assembly 10 includes a toothed ring 101, an annular groove 801 is provided inside the conical cover 8, the toothed ring 101 is rotatably installed in the annular groove 801, and a main gear 102 meshes with the toothed ring 101. The main gear 102 is rotatably installed on the bottom of the housing 2. A scraper 103 is provided, one end of which is fixedly connected to the inner ring of the toothed ring 101. An L-shaped rod 104 is provided, the other end of which is rotatably connected to the L-shaped rod 104. The scraper 103 is in close contact with the inner ring of the conical cover 8, and the L-shaped rod 104 is fixedly installed inside the conical cover 8.

[0028] Specifically, attached Figure 4The middle arrow indicates the rotation direction of the toothed ring 101. During the process of dirt mixed with tap water falling directly into the conical shroud 8, the mixture of dirt and tap water flows downwards along the inner wall of the conical shroud 8. However, a small portion of the dirt has strong adhesion, making it easy for dirt to adhere to the inner wall of the conical shroud 8, which makes subsequent cleaning of the inner wall of the conical shroud 8 more difficult and affects the overall operating efficiency of the cooling tower. Therefore, when it is necessary to clean the dirt on the inner wall of the conical shroud 8, the water should be continuously sprayed downwards through the spray nozzles 701 on the spray pipe 7. The filter belt 4 is rinsed. At this time, a set of motors drives the main gear 102 to rotate. The main gear 102 drives the gear ring 101 to slide along the annular groove 801. At the same time, the gear ring 101 drives the scraper 103 to rotate against the inner wall of the conical cover 8, so that the dirt on the inner wall of the conical cover 8 is scraped off by the scraper 103. The scraped dirt will flow out of the conical cover 8 with the falling tap water. Thus, not only is the inner wall of the conical cover 8 cleaned, but the cleaning speed is also fast, which greatly reduces the impact on the operating efficiency of the entire cooling tower. Example 2

[0029] like Figures 5 to 9 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the scraper 103 includes a rotating frame 1031, one end of which is fixedly connected to the inner ring of the toothed ring 101, and the other end of which is rotatably connected to an L-shaped rod 104. Two sets of toothed rollers 1032 are rotatably installed inside the rotating frame 1031, a scraping belt 1033 surrounds the two sets of toothed rollers 1032, and a first bevel gear 1034 is fixedly installed on one set of toothed rollers 1032. At the end of 32, a second bevel gear 1035 meshes with the first bevel gear 1034. A material preparation groove 1036 is opened on the rotating frame 1031 for scraping dirt off the scraper belt 1033. The toothed roller 1032 meshes with several sets of teeth on the inner ring of the scraper belt 1033. The outer ring of the scraper belt 1033 is in close contact with the inner wall of the conical cover 8. The outer ring of the second bevel gear 1035 is in close contact with the inner ring of the drain port 6. The second bevel gear 1035 is driven to rotate along the inner ring of the drain port 6.

[0030] Specifically, attached Figure 5The middle arrow indicates the conveying direction of the scraper belt 1033. As the scraper 103 continuously scrapes away the dirt on the inner wall of the conical cover 8, dirt also adheres to the scraper 103. As the dirt accumulates on the scraper 103, it will affect the cleaning effect of the scraper 103 on the inner wall of the conical cover 8. Therefore, during the process of the scraper 103 scraping away the dirt on the inner wall of the conical cover 8, the rotating toothed ring 101 drives the rotating frame 1031. The rotating frame 1031, together with the toothed roller 1032, scraper belt 1033, first conical gear 1034, second conical gear 1035, and other components, rotates together. The other end of the rotating frame 1031 rotates around the L-shaped rod 104. The scraper belt 1033 scrapes away the dirt adhering to the inner wall of the conical cover 8. At the same time, the second conical gear 1035 rotates against the inner ring of the drain port 6. The rotating second conical gear 1035 causes a set of toothed rollers 1032 to rotate through the first conical gear 1034. As the set of toothed rollers 1032 rotates, the scraper belt 1033 begins to drive around the two sets of toothed rollers 1032. The driven scraper belt 1033 passes through the material preparation groove 1036 on the rotating frame 1031, causing the dirt adhering to the scraper belt 1033 to be scraped away by the material preparation groove 1036, thus cleaning the scraper belt 1033 and ensuring the cleaning effect of the scraper belt 1033 on the inner wall of the conical cover 8.

[0031] Furthermore, the scraper 103 also includes a scraper strip 1037, which is located inside the material preparation trough 1036. A screw-on sleeve 1038 is fixedly connected to one end of the scraper strip 1037. The screw-on sleeve 1038 is rotatably mounted on another set of toothed rollers 1032. A movable block 1039 is movably installed inside the material preparation trough 1036. A guide post 1040 is movably inserted into the movable block 1039. The guide post 1040 is fixedly installed inside the material preparation trough 1036 and sleeved on the guide post 1040. The spring 1041 on the column 1040 and the scraper 1037 are attached to the scraper belt 1033. The scraper 1037 is used to scrape off the dirt attached to the scraper belt 1033. A rectangular groove 371 is opened on the scraper 1037. A pin 391 is provided at one end of the movable block 1039. The pin 391 is located in the rectangular groove 371. A pressure bearing shaft 392 is provided at the other end of the movable block 1039. An oblique boss 41 is provided on the L-shaped rod 104. The end of the pressure bearing shaft 392 is in close contact with the oblique boss 41.

[0032] Specifically, during the process of scraping dirt off the scraper belt 1033 in the material preparation tank 1036, the scraper bar 1037 slides along the scraper belt 1033, causing the dirt on the scraper belt 1033 to be scraped off by the scraper bar 1037. At the same time, the end of the pressure shaft 392 slides along the inclined boss 41 and is squeezed by the inclined boss 41, causing the pressure shaft 392 to push the movable block 1039 downward along the guide post 1040 and compress the spring 1041. At the same time, the movable block 1039 drives the pin 391 to squeeze the inner wall of the rectangular groove 371, causing the scraper bar 1037 and the screw sleeve 1038 to flip downward until the pressure shaft 392... The two ends are offset from the highest point of the inclined boss 41. Under the rebound force of the spring 1041, the scraper 1037 and the screw sleeve 1038 flip upward and backward. Therefore, as the toothed ring 101 rotates continuously, the scraper 1037 will flip up and down repeatedly, so that the dirt accumulated in the opening and inside of the material preparation tank 1036 is repeatedly squeezed downward by the scraper 1037, so that the dirt can fall down quickly and be discharged from the conical cover 8 quickly. This prevents the dirt scraped from the scraper belt 1033 from clogging the opening of the material preparation tank 1036, and ensures the cleaning effect of the scraper 1037 and the material preparation tank 1036 on the scraper belt 1033.

[0033] Working principle: After the circulating water enters the cooling tower body 1, it falls directly onto the filter belt 4 located inside the cooling tower body 1. The filter belt 4 filters the circulating water, and the resulting dirt is retained on the filter belt 4. The filtered circulating water is then discharged into the water tank 3 through the water flow sensor 11. As the filter belt 4 continues to filter the circulating water, the mesh on the filter belt 4 becomes clogged with dirt, reducing the amount of circulating water passing through the filter belt 4. This reduces the flow rate through the water flow sensor 11, which then transmits a signal of reduced flow to the controller at the back end. The controller then controls a set of... A motor drives a set of conveyor columns 5 to rotate. As the set of conveyor columns 5 rotates, the filter belt 4 will start to be conveyed. Under the guidance of several sets of conveyor columns 5, the part of the filter belt 4 inside the cooling tower body 1 is conveyed out of the cooling tower body 1, while another part of the filter belt 4 will enter the cooling tower body 1. When the filtered filter belt 4 passes under the water spray pipe 7, the water pump draws tap water into the water spray pipe 7 and sprays it onto the filter belt 4 through the spray hole 701, so that the dirt clogging the mesh of the filter belt 4 and the dirt attached to the filter belt 4 are washed away. The dirt mixed with tap water falls directly into the conical shroud 8 and is then discharged through the drain pipe 9. When it is necessary to clean the dirt on the inner wall of the conical cover 8, the filter belt 4 is continuously rinsed downwards through the spray holes 701 on the spray pipe 7. At this time, a set of motors drives the main gear 102 to rotate. The main gear 102 drives the gear ring 101 to slide along the annular groove 801. The rotating gear ring 101 drives the rotating frame 1031. The rotating frame 1031, together with the toothed roller 1032, scraper belt 1033, first conical gear 1034, second conical gear 1035 and other components, rotate together. The other end of 31 rotates around the L-shaped rod 104, and the scraper belt 1033 scrapes away the dirt adhering to the inner wall of the conical cover 8. At the same time, the second conical gear 1035 rotates against the inner ring of the drain port 6. The rotating second conical gear 1035 causes a set of toothed rollers 1032 to rotate through the first conical gear 1034. As the set of toothed rollers 1032 rotates, the scraper belt 1033 begins to drive around the two sets of toothed rollers 1032. The driven scraper belt 1033 will pass through the material trough 1036 on the rotating frame 1031. The scraper strip 1037 slides along the scraper belt 1033, scraping away the dirt on the scraper belt 1033. Simultaneously, the end of the pressure shaft 392 slides along the inclined boss 41 and is compressed by the inclined boss 41, causing the pressure shaft 392 to push the movable block 1039 downwards along the guide post 1040 and compress the spring 1041. At the same time, the movable block 1039 drives the pin 391 to press against the inner wall of the rectangular groove 371, causing the scraper strip 1037 and the screw-on sleeve 1038 to flip downwards. Until the end of the pressure shaft 392 is offset from the highest point of the inclined boss 41, under the rebound force of the spring 1041, the scraper 1037 and the screw sleeve 1038 flip upward and backward. Therefore, as the toothed ring 101 rotates continuously, the scraper 1037 will continuously flip up and down, so that the dirt accumulated in the opening and inside of the material preparation tank 1036 is repeatedly squeezed downward by the scraper 1037, so that the dirt can fall down quickly and be discharged from the conical cover 8 quickly, thus cleaning the inner wall of the conical cover 8.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic filter replacement device for a cooling tower water tank, comprising a housing (2) located directly above a water tank (3), the housing (2) being fixedly installed on a cooling tower body (1), and a water flow sensor (11) being provided on one side of the cooling tower body (1), characterized in that: The housing (2) is provided with a filter belt (4), and several sets of transmission columns (5) for transmitting the filter belt (4) are rotatably installed inside the housing (2). A drain port (6) is opened at the bottom of the housing (2). A water spray pipe (7) is provided directly above the drain port (6). A conical cover (8) is provided directly below the drain port (6). A drain pipe (9) is provided at the bottom of the conical cover (8). The water spray pipe (7) is provided with several sets of spray holes (701), the spray holes (701) are directly opposite the filter belt (4), the filter belt (4) is covered with rubber strips (401) on both sides, and the rubber strips (401) are in close contact with the inner wall of the cooling tower body (1). The conical cover (8) is provided with a descaling component (10), which includes: A toothed ring (101) is provided in the conical cover (8), and the toothed ring (101) is rotatably installed in the annular groove (801); The main gear (102) meshes with the gear ring (101), and the main gear (102) is rotatably mounted on the bottom of the housing (2); Scraper (103), one end of which is fixedly connected to the inner ring of toothed ring (101); The other end of the scraper (103) is rotatably connected to the L-shaped rod (104). The scraper (103) includes: A rotating frame (1031) is fixedly connected to the inner ring of a toothed ring (101) at one end, and rotatably connected to an L-shaped rod (104) at the other end. Rotate the two sets of toothed rollers (1032) installed in the rotating frame (1031). A scraper belt (1033) surrounds two sets of toothed rollers (1032); The first bevel gear (1034) is fixedly mounted on the end of a set of toothed rollers (1032); A second bevel gear (1035) meshes with the first bevel gear (1034); A material preparation trough (1036) is provided on the rotating frame (1031) for scraping off dirt from the scraper belt (1033). The scraper (103) also includes: A scraper (1037) is located inside the material preparation trough (1036); A screw-on sleeve (1038) is fixedly connected to one end of the scraper (1037), and the screw-on sleeve (1038) is rotatably mounted on another set of toothed rollers (1032); Movable block (1039), said movable block (1039) is movably installed in the material preparation tank (1036); A guide post (1040) is movably inserted into the movable block (1039), and the guide post (1040) is fixedly installed inside the material preparation tank (1036); A spring (1041) sleeved on the guide post (1040); The scraper strip (1037) is attached to the scraper belt (1033), and the scraper strip (1037) is used to scrape off the dirt attached to the scraper belt (1033); The scraper (1037) has a rectangular groove (371) and a pin (391) is provided at one end of the movable block (1039), the pin (391) being located in the rectangular groove (371); The other end of the movable block (1039) is provided with a pressure bearing shaft (392), and the L-shaped rod (104) is provided with an oblique boss (41). The end of the pressure bearing shaft (392) is closely attached to the oblique boss (41).

2. The automatic replacement device for cooling tower water tank filter screen according to claim 1, characterized in that: The scraper (103) is in close contact with the inner ring of the conical cover (8), and the L-shaped rod (104) is fixedly installed inside the conical cover (8).

3. The automatic replacement device for the filter screen of a cooling tower water tank according to claim 2, characterized in that: The toothed roller (1032) engages with several sets of teeth on the inner ring of the scraper belt (1033), and the outer ring of the scraper belt (1033) is in close contact with the inner wall of the conical cover (8).

4. The automatic replacement device for cooling tower water tank filter screen according to claim 3, characterized in that: The outer ring of the second bevel gear (1035) is in close contact with the inner ring of the drain port (6), and drives the second bevel gear (1035) to rotate along the inner ring of the drain port (6).

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