Circulating filtering device of cooling tower

Abstract

The invention relates to the technical field of filtering equipment, and particularly discloses a cooling tower circulating filtering device which comprises a tower body and water outlets formed in the two sides of the tower body, the tower body is provided with a filtering mechanism at the water outlets, the filtering mechanism comprises a first mounting frame, a second mounting frame, a filtering net and a collecting assembly, the filtering net is made of an elastic material, and the collecting assembly is connected with the first mounting frame and the second mounting frame. A collecting opening is formed in the bottom of the tower body, the collecting assembly comprises a blocking plate and a collecting box which are arranged at the top of the collecting opening, the blocking plate is rotationally matched with the tower body, circulating water passes through the filter screen and pushes the filter screen to deform in the direction away from the tower body, and after the circulating water does not enter the tower body any more, the filter screen resets; the sundries on the filter screen are pushed to move towards the collecting opening, the blocking plate rotates, the collecting opening is opened, and the sundries are collected; the circulating filtering device of the cooling tower has the effects that the use convenience of the filtering net can be improved, and meanwhile, the working efficiency of the cooling tower is improved.

Description

Technical Field

[0001] The invention relates to the technical field of filtering equipment, and in particular to a cooling tower circulation filtering device. Background Art

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it into the atmosphere to lower the water temperature. It uses the principle of evaporative heat dissipation, convection heat transfer and radiation heat transfer to dissipate the waste heat generated in industry or refrigeration and air conditioning to lower the water temperature by using water as a circulating coolant. This ensures the normal operation of the system. The device is generally barrel-shaped, hence the name cooling tower. The filtration treatment of the cooling tower circulating water is an important link. Its main purpose is to improve cooling efficiency, reduce dirt and corrosion, and ensure the stable operation of the system. The treatment of circulating cooling water mainly includes the following aspects: (1) Removal of suspended matter and dirt: This includes mud, sticky scale and scaling. These dirt will reduce heat exchange efficiency, increase energy consumption, and may even cause equipment damage; (2) Control of corrosion and microorganisms: Microbial growth and metal corrosion in the circulating water will damage the system, so they need to be controlled through water treatment.

[0003] The Chinese patent application document with the publication number CN218687634U discloses an anti-corrosion cooling tower, including a tower body, the tower body is provided with an air outlet, the inner wall of the air outlet is slidably connected with a detachable filtering mechanism, the outer peripheral side of the tower body is slidably connected with an anti-corrosion mechanism, the outer peripheral side of the tower body is connected with multiple groups of evenly distributed supporting mechanisms, the supporting mechanisms are arranged on both sides of the anti-corrosion mechanism, the detachable filtering mechanism includes two symmetrical fixed seats connected to the inner wall of the air outlet, each of the fixed seats is provided with a placement groove, the inner wall of the placement groove is connected with a contact spring, the contact spring abuts with a slider, the slider is slidably connected to the placement groove, and a filter net is connected between the sliders; when the tower body is working, the filter net filters impurities, and a long working time will cause the filtering function of the filter net to decrease. At this time, the staff can move the handle upward, and the handle at this time drives the slider to move in the placement groove, and the contact spring at this time rebounds. When a new filter net is replaced, it is sufficient to align the slider with the placement groove. At this time, the slider abuts against the contact spring, and the contact spring produces a compression action.

[0004] In the above technology, when the filtering function of the filter is reduced, the filter is removed from the tower body and replaced. During use, the filter is frequently removed from the tower body, which makes the use of the filter inconvenient and reduces the working efficiency of the cooling tower. Summary of the invention

[0005] The present invention provides a cooling tower circulation filtration device, which aims to solve the technical problem in the prior art that when the filtering function of the filter screen decreases, the filter screen is removed from the tower body and replaced. During use, the filter screen is frequently disassembled and assembled from the tower body, resulting in inconvenient use of the filter screen and reduced working efficiency of the cooling tower.

[0006] A cooling tower circulation filter device according to the present invention comprises a tower body and drainage outlets arranged on both sides of the tower body, the tower body being provided with a filtering mechanism at the drainage outlet, the filtering mechanism comprising a mounting frame 1, a mounting frame 2, a filter screen for filtering debris in circulating water and a collecting assembly for collecting impurities, the mounting frame 1 and the mounting frame 2 being arranged in a vertical direction, the filter screen being made of an elastic material, one end of the filter screen being arranged on the mounting frame 1, and the other end being arranged on the mounting frame 2, a collecting port being provided at the bottom of the tower body, the collecting assembly comprising a blocking plate arranged at the top of the collecting port and a collecting box arranged at the bottom of the collecting port and used for collecting debris, the blocking plate being rotatably matched with the tower body, the circulating water passing through the filter screen pushes the filter screen to deform in a direction away from the tower body, when the circulating water no longer enters the tower body, the filter screen is reset, pushes the debris on the filter screen to move toward the collecting port, the blocking plate rotates, and the collecting port is opened to collect the debris.

[0007] Beneficial effect: Through the setting of the filtering mechanism, the sealing plate rotates and cooperates with the tower body. When the circulating water is filtered, the circulating water passes through the filter screen, pushing the filter screen to deform in the direction away from the tower body. When the circulating water no longer enters the tower body, the elastic restoring force of the filter screen drives the filter screen to reset, pushing the debris on the filter screen to move toward the collecting port. At the same time, the filter screen vibrates, making it easier for the debris on the filter screen to fall off. At this time, the sealing plate rotates and the collecting port opens, so that the debris can enter the collecting port and collect the debris. There is no need to disassemble and replace the filter screen, which can improve the convenience of using the filter screen and improve the working efficiency of the cooling tower.

[0008] Preferably, the blocking plate includes a rotating part rotatably engaged with the tower body and a collecting part slidably engaged with the rotating part in the horizontal direction. The collecting part is located at one end of the rotating part close to the filter screen, and a scraping plate is provided in the tower body for scraping off debris on the upper surface of the collecting part.

[0009] Preferably, a guide plate for conveying debris on the collecting part to the collecting port is provided on the tower body and below the collecting part, and the guide plate is inclined.

[0010] Beneficial effect: by setting the guide plate, after the debris on the collecting part is scraped off by the scraping plate, the debris can fall onto the guide plate and slide along the guide plate, making the collection of the debris more convenient.

[0011] Preferably, both mounting frame 1 and mounting frame 2 are provided with sliding devices, and the sliding devices include sliders that slide and cooperate with mounting frame 1 and mounting frame 2 in the horizontal direction and a driving member used to drive the sliders to slide in the tower body, one end of the driving member is connected to mounting frame 1, and the other end is connected to the slider, and the filter screen slides and cooperates with the slider in the vertical direction, and when the slider slides toward the inside of the tower body, it pushes the collecting part to slide into the rotating part.

[0012] Beneficial effect: through the setting of the sliding device, when the driving part drives the slider to slide into the tower body, it can push the collecting part, and then efficiently scrape off the debris on the collecting part, and while the filter net is reset, it drives the filter net to slide into the tower body, which can provide acceleration for the debris on the filter net, making the transportation of the debris to the collection port more efficient and quick.

[0013] Preferably, an arcuate surface is provided at one end of the collecting part close to the slider, an elastic member for pushing the collecting part to slide out of the rotating part is provided in the rotating part, one end of the elastic member is connected to the rotating part, and the other end is connected to the collecting part.

[0014] Preferably, a rotating shaft is provided on the rotating part, the rotating shaft is rotatably matched with the tower body, a gear is provided on the rotating shaft, a rotating device is provided on the slider, and the rotating device includes a support rod provided on the slider and a rotating mechanism provided on the support rod.

[0015] Beneficial effect: through the setting of the rotating device, when the slider is sliding, it can drive the support rod to move, and then drive the rotating mechanism to move, thereby driving the gear and the rotating shaft to rotate, realizing the rotation of the rotating part, and facilitating the collection of debris.

[0016] Preferably, the rotating mechanism includes a fixing frame installed on the support rod and teeth installed on the fixing frame. The driving member drives the slider to slide into the tower body. After pushing the collecting part to slide into the rotating part, the teeth engage with the gears to drive the end of the rotating part away from the collecting part to rotate downward.

[0017] Preferably, a cleaning device is provided on the tower body, and the cleaning device comprises a cleaning rod for cleaning the debris in the filter holes of the filter screen and a pushing component for driving the cleaning rod to move.

[0018] Beneficial effect: through the setting of the cleaning device, when the filter screen needs to be cleaned of debris after being used for a long time, starting the pushing component can drive the cleaning rod to move toward the filter screen and insert it into the filter holes of the filter screen to efficiently clean the debris in the filter screen.

[0019] Preferably, the pushing assembly comprises a pushing frame slidably fitted on the tower body and a driver mounted on the tower body and used for driving the pushing frame to slide, and the cleaning rod is mounted on the pushing frame.

[0020] Preferably, a guide device is provided in the tower body, and the guide device comprises a fixing plate installed in the tower body and a guide rod installed on the fixing plate, and the filter screen is slidably fitted on the guide rod along a horizontal direction.

[0021] Beneficial effect: Through the setting of the guide device, the filter net is guided during the sliding and deformation process, so that the filter net can move along the guide rod, making the position of the filter net more precise, and facilitating the subsequent cleaning rod to be inserted into the filter net and clean the filter net.

[0022] The beneficial effects of the present invention are: In the present invention, through the setting of the filtering mechanism, the blocking plate is rotated to cooperate with the tower body. When the circulating water is filtered, the circulating water passes through the filter screen, pushing the filter screen to deform in the direction away from the tower body. When the circulating water no longer enters the tower body, the elastic restoring force of the filter screen drives the filter screen to reset, pushing the debris on the filter screen to move toward the collecting port. At the same time, the filter screen vibrates, making it easier for the debris on the filter screen to fall off. At this time, the blocking plate rotates and the collecting port opens, so that the debris can enter the collecting port and collect the debris. There is no need to disassemble and replace the filter screen, which can improve the convenience of using the filter screen and improve the working efficiency of the cooling tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a partial cross-sectional view of the present invention.

[0025] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0026] Figure 4 It is a partial cross-sectional view showing the connection relationship between the filter mechanism and the sliding device of the present invention.

[0027] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle.

[0028] Figure 6 yes Figure 4 A partial enlarged view of point C in the middle.

[0029] Figure 7 It is a structural schematic diagram showing the connection relationship between the sliding block and the sliding block of the present invention.

[0030] Figure 8 It is a structural schematic diagram showing the connection relationship between the rotating plate and the rotating shaft of the present invention.

[0031] Reference numerals: 1. Tower body; 11. Drain outlet; 12. Collecting outlet; 2. Filter mechanism; 21. Mounting frame 1; 211. Slide groove; 22. Mounting frame 2; 23. Filter screen; 24. Blocking plate; 241. Rotating part; 242. Collecting part; 243. Arc surface; 25. Collecting box; 3. Scraping plate; 4. Guide plate; 5. Sliding device; 51. Sliding block; 52. Driving member; 6. Elastic member; 7. Rotating shaft; 71. Gear; 8. Rotating device; 81. Support rod; 82. Rotating mechanism; 821. Fixed frame; 822. Teeth; 9. Cleaning device; 91. Cleaning rod; 92. Pushing frame; 93. Driver; 10. Guide device; 101. Fixed plate; 102. Guide rod; 13. Sliding block; 14. T-block; 15. T-sliding groove; 16. Rotating plate. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] Reference Figure 1-Figure 8 A cooling tower circulation filtering device of the present invention comprises a tower body 1 and drain ports 11 arranged on both sides of the bottom of the tower body 1, and the drain ports 11 are arranged on both sides of the length direction of the tower body 1. The tower body 1 is provided with a filtering mechanism 2 at the drain port 11, and the filtering mechanism 2 is used to filter the circulating water. When the circulating water needs to be filtered, the circulating water is first passed into the tower body 1. When the circulating water moves to the filtering mechanism 2, the impurities in the circulating water are filtered by the filtering mechanism 2, and the filtered circulating water is discharged through the drain port 11, completing the filtering operation of the circulating water.

[0034] Among them, refer to Figure 2 , Figure 4 and Figure 7 The filtering mechanism 2 includes a mounting frame 21 fixedly installed in the tower body 1, a mounting frame 22, a filter screen 23 for filtering debris in the circulating water, and a collecting component for collecting impurities. The mounting frame 21 is a "concave" shaped structure. The mounting frame 21 and the mounting frame 22 are arranged opposite to each other in the vertical direction, and the mounting frame 21 is located above the mounting frame 22. The filter screen 23 is made of elastic metal material. Sliding blocks 13 are fixedly arranged at both ends of the filter screen 23. One end of the filter screen 23 is arranged on the mounting frame 21, and the other end is arranged on the mounting frame 22.

[0035] Reference Figure 2 and Figure 4 The bottom of the tower body 1 is provided with a collecting port 12, and the collecting port 12 is used to discharge debris. The collecting assembly includes a blocking plate 24 arranged at the top of the collecting port 12 and a collecting box 25 arranged at the bottom of the collecting port 12 and used to collect debris. The collecting box 25 is detachably connected to the bottom of the tower body 1, and the blocking plate 24 is rotatably matched with the tower body 1. The circulating water passes through the filter screen 23, pushing the filter screen 23 to deform in the direction away from the tower body 1 (its state is as shown in FIG. 1 ). Figure 2 As shown in the figure), when the circulating water no longer enters the tower body 1, the filter screen 23 is reset, pushing the debris on the filter screen 23 to move toward the collecting port 12, the blocking plate 24 rotates, and the collecting port 12 is opened to collect the debris.

[0036] Reference Figure 2 , Figure 4 and Figure 6 The blocking plate 24 includes a rotating part 241 rotatably fitted on the tower body 1 and a collecting part 242 slidably fitted in the rotating part 241 along the horizontal direction. The collecting part 242 is a rectangular plate. An arc-shaped surface 243 is provided at one end of the collecting part 242 close to the filter screen 23. The collecting part 242 is located at one end of the rotating part 241 close to the filter screen 23. A receiving groove for receiving the collecting part 242 is provided in the rotating part 241. The collecting part 242 is located in the receiving groove. An elastic member 6 for pushing the collecting part 242 to slide out of the rotating part 241 is provided in the rotating part 241. The elastic member 6 directly adopts a spring. One end of the elastic member 6 is fixedly connected to the rotating part 241, and the other end is fixedly connected to the collecting part 242.

[0037] Reference Figure 4 and Figure 6 A scraping plate 3 for scraping off debris on the upper surface of the collecting portion 242 is fixedly arranged in the tower body 1, and the bottom end of the scraping plate 3 abuts against the upper surface of the collecting portion 242. A guide plate 4 for transporting debris on the collecting portion 242 to the collecting port 12 is fixedly arranged on the tower body 1 and located below the collecting portion 242. The guide plate 4 is a rectangular plate, and the guide plate 4 is inclined, and one end of the guide plate 4 extends to the collecting box 25.

[0038] Reference Figure 4 , Figure 5 and Figure 7, the mounting frame 1 21 and the mounting frame 2 2 are both provided with a sliding device 5, the sliding device 5 includes a slider 51 that slides and cooperates with the mounting frame 1 21 and the mounting frame 2 2 in the horizontal direction and a driving member 52 for driving the slider 51 to slide in the tower body 1, the mounting frame 1 21 is provided with a T-shaped slide groove 211, the top of the slider 51 is provided with a T-shaped block 14, the T-shaped block 14 and the slide groove 211 slide in the horizontal direction, the slider 51 is provided with a T-shaped slide groove 15, and the slide block 13 on the filter screen 23 slides and cooperates in the T-shaped slide groove 15 in the vertical direction; the driving member 52 directly adopts a hydraulic cylinder, one end of the driving member 52 is fixedly connected to the mounting frame 1 21, and the other end is fixedly connected to the slider 51, starting the driving member 52 can drive the slider 51 to slide toward the inside of the tower body 1, one end of the slider 51 can push the collecting part 242 to slide into the rotating part 241, and a driving member 52 is also provided between the mounting frame 22 and the slider 51.

[0039] Reference Figure 4 , Figure 6 and Figure 8 A rotating plate 16 is fixedly provided on the upper surface of the rotating part 241, and a rotating shaft 7 is fixedly provided on the top of the rotating plate 16. The rotating plate 16 is a plate-like structure for connecting the rotating shaft 7 and the rotating part 241. The rotating shaft 7, the rotating plate 16 and the rotating part 241 are fixedly connected in sequence. When the rotating shaft 7 rotates, it can drive the rotating plate 16 to rotate, and then drive the rotating part 241 to rotate. The rotating shaft 7 is arranged along the length direction of the filter screen 23, and the rotating shaft 7 is rotatably matched with the tower body 1. A gear 71 is fixedly provided on the rotating shaft 7, and a rotating device 8 is provided on the slider 51. The rotating device 8 is used to drive the rotating shaft 7 to rotate, and then drive the rotating part 241 to rotate.

[0040] Reference Figure 4 and Figure 6 The rotating device 8 includes a support rod 81 fixedly arranged on the slider 51 and a rotating mechanism 82 arranged on the support rod 81. The rotating mechanism 82 includes a fixing frame 821 fixedly installed on the support rod 81 and teeth 822 fixedly installed on the fixing frame 821. The teeth 822 are arranged along the length direction of the fixing frame 821. The teeth 822 are adapted to the gear 71. The driving member 52 drives the slider 51 to slide into the tower body 1, drives the support rod 81 to slide, and after the slider 51 pushes the collecting part 242 to slide into the rotating part 241, the teeth 822 mesh with the gear 71, drives the rotating part 241 to rotate downward at one end away from the collecting part 242.

[0041] Reference Figure 2 , Figure 3 and Figure 6A cleaning device 9 is provided on the tower body 1, and the cleaning device 9 is used to clean the debris in the filter holes of the filter screen 23. The cleaning device 9 includes a cleaning rod 91 for cleaning the debris in the filter holes of the filter screen 23 and a pushing component for driving the cleaning rod 91 to move. The cleaning rod 91 is a cylindrical rod, and an arc-shaped guide surface is provided at one end of the cleaning rod 91 close to the filter screen 23. In the initial state, the cleaning rod 91 is arranged corresponding to the filter holes of the filter screen 23. When the filter screen 23 filters the circulating water and is deformed, the filter holes located above the middle position of the filter screen 23 and the filter holes below are offset from the cleaning rod 91 in the horizontal direction.

[0042] Reference Figure 2 and Figure 3 The pushing component includes a pushing frame 92 that is slidably matched on the tower body 1 and a driver 93 that is fixedly installed on the tower body 1 and is used to drive the pushing frame 92 to slide. The driver 93 directly adopts a hydraulic cylinder. One end of the driver 93 is fixedly connected to the tower body 1, and the other end is fixedly connected to the pushing frame 92. The cleaning rod 91 is fixedly installed on the pushing frame 92. Starting the driver 93 can drive the pushing frame 92 to slide close to or away from the filter screen 23, and drive the cleaning rod 91 to slide and adjust.

[0043] Reference Figure 2 and Figure 4 A guide device 10 is provided in the tower body 1, and the guide device 10 includes a fixed plate 101 fixedly installed in the tower body 1 and a guide rod 102 fixedly installed on the fixed plate 101. Guide holes are provided on the filter screen 23 and the pushing frame 92. The diameter of the guide hole is slightly larger than the diameter of the guide rod 102. The filter screen 23 slides horizontally on the guide rod 102 through the guide hole.

[0044] The implementation principle of a cooling tower circulating filter device of the present invention is as follows: when it is necessary to filter the circulating water, the circulating water is first introduced into the tower body 1. When the circulating water moves to the filtering mechanism 2, the circulating water impacts the filter screen 23, causing the filter screen 23 to deform in a direction away from the tower body 1. At the same time, the sliding block 13 on the filter screen 23 slides in the slider 51 along the vertical direction. The debris in the circulating water is intercepted by the filter screen 23, and the debris is intercepted on the filter screen 23 and in the filter holes of the filter screen 23. When the circulating water is filtered, the circulating water is discharged through the drain port 11, completing the filtering operation of the circulating water. After the circulating water is filtered, the filter screen 23 performs a reset movement. When the filter screen 23 is reset, the debris on the filter screen 23 and in the filter holes of the filter screen 23 can be vibrated, and the debris can fall from the filter screen 23 and the filter holes of the filter screen 23. The debris will fall onto the collecting portion 242 and the rotating portion 241, and the driving member 52 is started at the same time to drive the slider 51 to slide in the mounting frame 21 in the direction away from the pushing frame 92. When the slider 51 slides, it can drive the support rod 81 to slide. At the same time, the slider 51 pushes the collecting portion 242 to slide, and the collecting portion 242 compresses the elastic member 6. During the sliding process of the collecting portion 242, the scraper plate 3 scrapes the debris on the upper surface of the collecting portion 242 and pushes it onto the guide plate 4. The debris slides along the guide plate 4 into the collecting box 25; When the collecting portion 242 partially slides into the rotating portion 241, the teeth 822 mesh with the gear 71. When the slider 51 continues to slide, the teeth 822 can drive the gear 71 to rotate, thereby driving the rotating shaft 7 and the rotating plate 16 to rotate, and then driving the rotating portion 241 to rotate. The end of the rotating portion 241 away from the collecting portion 242 rotates downward, so that the debris on the rotating portion 241 and the debris shaken off the filter screen 23 can enter the collection box 25 through the collecting port 12, completing the collection operation of the debris; When the debris collection is completed, the driving member 52 is started to drive the slider 51 to slide in the mounting frame 21 toward the direction close to the pushing frame 92. When the slider 51 slides, the support rod 81 is driven to slide, and the fixing frame 821 and the teeth 822 are driven to slide. During the sliding process of the teeth 822, the gear 71 and the rotating shaft 7 are driven to rotate, and the rotating part 241 is driven to rotate and reset. When the rotating part 241 rotates to the horizontal position, the elastic member 6 releases the elastic restoring force, and drives the collecting part 242 to slide in the direction close to the pushing frame 92 for reset. After the collecting part 242 abuts against the side of the slider 51, it no longer slides. When it is necessary to deeply clean the debris in the filter holes of the filter 23, start the driver 93, which can drive the pushing frame 92 to slide close to the filter 23, drive the cleaning rod 91 to slide, and the cleaning rod 91 is inserted into the filter holes of the filter 23 to push out the debris in the filter holes of the filter 23, and clean the debris in the filter holes of the filter 23. After cleaning, the driver 93 drives the pushing frame 92 and the cleaning rod 91 to reset.

[0045] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A cooling tower circulation filtration device, comprising a tower body (1) and drain ports (11) arranged on both sides of the tower body (1), characterized in that: The tower body (1) is provided with a filter mechanism (2) at the drain outlet (11), the filter mechanism (2) comprising a mounting frame (21) and a mounting frame (22) installed in the tower body (1), a filter screen (23) for filtering debris in the circulating water, and a collection assembly for collecting impurities, the mounting frame (21) and the mounting frame (22) being arranged in a vertical direction, the filter screen (23) being made of an elastic material, one end of the filter screen (23) being arranged on the mounting frame (21) and the other end being arranged on the mounting frame (22), and a collection assembly being provided at the bottom of the tower body (1) The collecting port (12) comprises a blocking plate (24) arranged at the top of the collecting port (12) and a collecting box (25) arranged at the bottom of the collecting port (12) and used for collecting debris. The blocking plate (24) is rotatably matched with the tower body (1). The circulating water passes through the filter screen (23), pushing the filter screen (23) to deform in a direction away from the tower body (1). When the circulating water no longer enters the tower body (1), the filter screen (23) is reset, pushing the debris on the filter screen (23) to move toward the collecting port (12). The blocking plate (24) rotates, and the collecting port (12) is opened to collect the debris.

2. A cooling tower circulation filtration device according to claim 1, characterized in that: The blocking plate (24) comprises a rotating portion (241) rotatably engaged with the tower body (1) and a collecting portion (242) slidably engaged in the rotating portion (241) in the horizontal direction, the collecting portion (242) being located at one end of the rotating portion (241) close to the filter screen (23), and a scraping plate (3) for scraping off debris on the upper surface of the collecting portion (242) is provided in the tower body (1).

3. A cooling tower circulation filtration device according to claim 2, characterized in that: A guide plate (4) for conveying debris on the collecting portion (242) to the collecting port (12) is provided on the tower body (1) and below the collecting portion (242); the guide plate (4) is arranged at an angle.

4. A cooling tower circulation filtration device according to claim 2, characterized in that: The first mounting frame (21) and the second mounting frame (22) are both provided with a sliding device (5), the sliding device (5) comprising a sliding block (51) slidably matched in the first mounting frame (21) and the second mounting frame (22) in a horizontal direction, and a driving member (52) used to drive the sliding block (51) to slide in the tower body (1), one end of the driving member (52) is connected to the first mounting frame (21), and the other end is connected to the sliding block (51), the filter screen (23) is slidably matched with the sliding block (51) in a vertical direction, and when the sliding block (51) slides toward the inside of the tower body (1), it pushes the collecting portion (242) to slide into the rotating portion (241).

5. A cooling tower circulation filtration device according to claim 4, characterized in that: An arc-shaped surface (243) is provided at one end of the collecting portion (242) close to the sliding block (51); an elastic member (6) for pushing the collecting portion (242) to slide out of the rotating portion (241) is provided in the rotating portion (241); one end of the elastic member (6) is connected to the rotating portion (241), and the other end is connected to the collecting portion (242).

6. A cooling tower circulation filtration device according to claim 4, characterized in that: The rotating part (241) is provided with a rotating shaft (7), the rotating shaft (7) is rotatably matched with the tower body (1), the rotating shaft (7) is provided with a gear (71), the slider (51) is provided with a rotating device (8), the rotating device (8) comprises a support rod (81) provided on the slider (51) and a rotating mechanism (82) provided on the support rod (81).

7. A cooling tower circulation filtration device according to claim 6, characterized in that: The rotating mechanism (82) comprises a fixing frame (821) mounted on the support rod (81) and teeth (822) mounted on the fixing frame (821); the driving member (52) drives the slider (51) to slide into the tower body (1), and after pushing the collecting portion (242) to slide into the rotating portion (241), the teeth (822) mesh with the gear (71), and drive the end of the rotating portion (241) away from the collecting portion (242) to rotate downward.

8. A cooling tower circulation filtration device according to claim 1, characterized in that: The tower body (1) is provided with a cleaning device (9), the cleaning device (9) comprising a cleaning rod (91) for cleaning debris in filter holes of the filter screen (23) and a pushing component for driving the cleaning rod (91) to move.

9. A cooling tower circulation filtration device according to claim 8, characterized in that: The pushing assembly comprises a pushing frame (92) slidably fitted on the tower body (1) and a driver (93) mounted on the tower body (1) and used to drive the pushing frame (92) to slide. The cleaning rod (91) is mounted on the pushing frame (92).

10. A cooling tower circulation filtration device according to claim 1, characterized in that: A guide device (10) is provided in the tower body (1), the guide device (10) comprising a fixing plate (101) mounted in the tower body (1) and a guide rod (102) mounted on the fixing plate (101), and the filter screen (23) is slidably engaged on the guide rod (102) along a horizontal direction.

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