A filter anti-blocking device for water outlet pipeline of cooling tower reconstruction

Abstract

The application relates to the technical field of cooling towers, in particular to a filtering and anti-blocking device for a reconstructed outlet pipeline of a cooling tower, which comprises a shell, a cylindrical cavity is formed in the shell, liquid inlets and liquid outlets, which are in communication with the cylindrical cavity, are formed at both ends of the shell, a filtering cylinder is slidably and sealingly connected in the cylindrical cavity, and a supporting frame is arranged in the cylindrical cavity. When the filtering cylinder is pushed to the position between the detection nozzle and the pressure sensor by the hydraulic motor driven push plate, the impurities adhered to the outer ring wall of the filtering cylinder are separated from the filtering cylinder by the end wall in communication with the cylindrical cavity, the liquid water sprayed by the detection nozzle passes through the cleaned filtering cylinder and impacts on the pressure sensor, the pressure sensor judges the damage condition of the filtering cylinder according to the detected impact force, the detection can be completed without emptying the water in the cooling tower pool, the length of the cooling tower shutdown is reduced, and the overall operation efficiency of the cooling tower is improved.

Description

Technical Field

[0001] This invention relates to the field of cooling tower technology, specifically to a filtration and anti-clogging device for modifying the outlet pipe of a cooling tower. Background Technology

[0002] Cooling towers, also known as water cooling towers, are ideal products for modern industrial and mining enterprises such as petrochemicals, power, metallurgy, textiles, and electronics, as well as various civil buildings, to achieve equipment cooling and circulating water use. They are highly efficient equipment that saves energy, water, and prevents environmental pollution. When the cooling tower is working, the circulating water in the cooling tower pool is first transported to the circulating water pump through the outlet pipe. The circulating water pump pressurizes the circulating water and delivers it to the heat exchange equipment. The temperature of the circulating water rises and it is then transported into the cooling tower. After the cooling tower cools the circulating water to the specified temperature, the circulating water flows into the cooling tower pool and then flows back into the circulating water pump through the outlet pipe, thus completing one cycle. Since cooling towers cool circulating water by drawing in outside air, dust, mud, and willow catkins in the air enter the cooling tower water pool with the incoming air. On the one hand, this increases the amount of impurities inside the cooling tower, which clogs the filter mesh and reduces the outflow of water. On the other hand, dust brings a large number of microorganisms, which easily breed bacteria and algae, attach to the filter mesh, accelerate the clogging of the filter mesh, and result in insufficient actual circulating water volume and reduced cooling efficiency. To ensure that the cooling tower is always in optimal working condition and can operate stably and efficiently for a long time, the filter screen in the outlet pipe needs to be cleaned once a month to remove sludge, algae, and other debris from the filter screen, ensuring that the water flows out of the outlet pipe unimpeded. At the same time, the monthly cleaning is also a routine inspection of the filter screen to detect any corrosive damage in time and prevent the filter screen from failing to effectively filter the circulating water due to failure. However, when cleaning the filter screen, the machine needs to be shut down and the water in the cooling tower pool needs to be completely drained before the pool can be entered for inspection and cleaning. But shutting down the cooling tower for cleaning will directly affect its cooling efficiency. In addition, if the debris accumulated on the filter screen does not significantly affect the normal operation of the outlet pipe, stopping the inspection of the cooling tower will actually reduce the overall operating efficiency of the cooling tower due to the time-consuming operation. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a filtration and anti-clogging device for the outlet pipe of a cooling tower. This solves the problem that in traditional technologies, cleaning the filter requires shutting down the cooling tower and completely draining the water from the cooling tower's pool before inspection and cleaning can proceed. However, shutting down the cooling tower for cleaning directly impacts its cooling efficiency. Furthermore, if the accumulated debris on the filter does not significantly affect the normal operation of the outlet pipe, stopping the cooling tower for inspection can actually reduce its overall operating efficiency due to the time-consuming operation.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a filtration and anti-clogging device for the outlet pipe of a cooling tower, comprising a shell, wherein a cylindrical cavity is provided inside the shell, and an inlet and an outlet communicating with the cylindrical cavity are provided at both ends of the shell; A filter cylinder is slidably and sealed inside the cylindrical cavity. A support frame is provided inside the cylindrical cavity and is fixedly connected to the shell. An arc-shaped groove is opened on the inner wall of the cylindrical cavity. An arc-shaped plate is installed in the arc-shaped groove. A detection nozzle is installed at the end of the arc-shaped plate away from the arc-shaped groove. A pressure sensor is installed on the surface of the support frame and is directly opposite the detection nozzle. A push plate is slidably connected inside the cylindrical cavity. A flange is fixedly connected to one end of the filter cylinder. The push plate is connected to the flange at one end of the filter cylinder. A hydraulic motor is installed on one side of the housing. A pushing unit is installed between the hydraulic motor and the push plate. The hydraulic motor drives the push plate to slide inside the cylindrical cavity through the pushing unit.

[0005] By adopting the above technical solution, through the cooperation of the detection nozzle and the pressure sensor, when the hydraulic motor drives the push plate to push the filter cartridge between the detection nozzle and the pressure sensor, the impurities attached to the outer ring wall of the filter cartridge are blocked and removed by the end wall connecting the liquid inlet and the cylindrical cavity. The liquid water sprayed from the detection nozzle passes through the cleaned filter cartridge and impacts the pressure sensor, so that the pressure sensor judges the damage of the filter cartridge based on the detected impact force. Therefore, the detection can be completed without draining the water in the cooling tower pool, thereby reducing the downtime of the cooling tower and improving the overall operating efficiency of the cooling tower.

[0006] Preferably, the pushing unit includes a lead screw and a guide rod. The inner wall of the cylindrical cavity is provided with a strip groove, and there are two strip grooves. The lead screw and the guide rod are rotatably connected in the strip groove. The push plate is helically connected to the lead screw. One end of the lead screw is fixedly connected to a first bevel gear shaft. The output end of the hydraulic motor is connected to a first bevel gear ring. The first bevel gear ring and the first bevel gear shaft are driven by a double-headed bevel gear meshing.

[0007] Preferably, there are two sets of arc-shaped grooves, which are distributed on both sides of the liquid inlet.

[0008] Preferably, a support cylinder is installed on the outer ring wall of the support frame, a water channel is formed on the surface of the support cylinder, and an impact nozzle is installed on the surface of the support cylinder, with the impact nozzle surrounding the water channel.

[0009] Preferably, the housing has a water inlet at one end, a cavity inside the housing, a liquid exchange plate slidably and sealed inside the cavity, a straight groove and an L-shaped groove on the surface of the liquid exchange plate, a liquid channel communicating with the impact nozzle inside the support frame, the end of the liquid channel away from the impact nozzle communicating with the cavity, and a flow channel communicating with the detection nozzle inside the housing, the end of the flow channel away from the detection nozzle communicating with the cavity. A sealing plug is installed in the L-shaped groove, and the sealing plug is connected to the groove wall of the L-shaped groove by a support spring. An insertion tube is fixed to the upper wall of the cavity. The insertion tube has a trapezoidal cross-section. A lifting unit is installed in the housing. The lifting unit is used to push the liquid changing plate to slide in the cavity.

[0010] Preferably, the lifting unit includes a first groove and a second groove, both of which are formed on the inner wall of the strip groove. Trapezoidal blocks are slidably connected to both the first and second grooves. The first groove communicates with the cavity through a first hydraulic hole, and the second groove communicates with the cavity through a second hydraulic hole. A sealing plate is slidably and sealingly connected to the cavity. The sealing plate is fixed to the lower end of the fluid exchange plate and slides between the first and second hydraulic holes.

[0011] Preferably, a slider is slidably connected in each of the two strip grooves, the lead screw is helically connected to the slider, the guide rod is in sliding contact with the slider, an annular groove is provided on the side of the push plate near the slider, the slider is slidably connected in the annular groove, a drive gear is slidably connected to the surface of the guide rod, a connecting gear is provided on one side of the drive gear and meshes with it, the connecting gear is rotatably connected to the slider, a spur gear meshing with the connecting gear is fixedly installed on one side of the push plate, and a transmission unit is provided between the guide rod and the hydraulic motor, the hydraulic motor drives the guide rod to rotate through the transmission unit.

[0012] Preferably, the transmission unit includes a worm gear and a worm, the worm gear is fixedly connected to the guide rod, the worm is rotatably connected to the housing, and the worm meshes with the worm gear; A connecting rod is provided inside the housing. The first bevel gear ring is connected to the end of the connecting rod away from the hydraulic motor. A second bevel gear ring is installed at the end of the connecting rod close to the hydraulic motor. A second bevel gear shaft is provided on one side of the second bevel gear ring and meshes with it. The second bevel gear shaft is fixedly connected to the worm gear. A rectangular groove is provided at one end of the connecting rod near the hydraulic motor. The output end of the hydraulic motor is slidably connected in the rectangular groove. An electromagnetic plate is installed at the bottom of the rectangular groove. The electromagnetic plate is connected to the output end of the hydraulic motor by a connecting spring.

[0013] Preferably, a protective shell is provided on one side of the push plate, the protective shell is rotatably and sealed to the push plate, the protective shell is fixedly connected to the slider, and the drive gear, spur gear and connecting gear are all located inside the protective shell.

[0014] Preferably, a corrugated tube is sleeved on the surface of the lead screw, and a rotating ring is rotatably connected in the annular groove, the rotating ring being connected to the slider.

[0015] This invention provides a filtration and anti-clogging device for the outlet pipe of a cooling tower. It has the following beneficial effects: 1. This invention utilizes the cooperation of a detection nozzle and a pressure sensor. When the hydraulic motor drives the pusher plate to push the filter cartridge between the detection nozzle and the pressure sensor, impurities attached to the outer ring wall of the filter cartridge are blocked and removed by the end wall connecting the liquid inlet and the cylindrical cavity. The liquid water sprayed from the detection nozzle passes through the cleaned filter cartridge and impacts the pressure sensor. The pressure sensor determines the damage to the filter cartridge based on the detected impact force. Therefore, the detection can be completed without draining the water in the cooling tower pool, thereby reducing the downtime of the cooling tower and improving the overall operating efficiency of the cooling tower.

[0016] 2. This invention incorporates an impact nozzle. Before the filter cartridge moves between the detection nozzle and the pressure sensor, the impact nozzle impacts the filter holes on the inner wall of the filter cartridge, causing small-diameter sludge and algae to detach from the filter cartridge. This ensures that the water jet from the detection nozzle can pass through the filter holes normally, preventing the impact force of the water jet at the broken part of the filter cartridge due to filter hole blockage from being lower than the pressure sensor's threshold, thus ensuring the accuracy of the pressure sensor's detection results. Furthermore, the impact nozzle is tilted towards the edge connecting the inlet and the cylindrical cavity, allowing impurities and algae blocked near the cylindrical cavity end of the inlet to be flushed out of the inlet by the water jet from the impact nozzle. This prevents the inlet end near the cylindrical cavity from being blocked by impurities and algae, thereby increasing the circulating water flow rate in the inlet.

[0017] 3. By setting the length of the filter cylinder to be much larger than the diameter of the liquid inlet, the pusher plate can push the filter cylinder near the pusher plate to move to the liquid inlet, thereby blocking impurities from the liquid inlet from flowing into the water outlet pipe. If the front filtration area of ​​the filter cylinder is damaged and the cooling tower cannot be stopped due to emergency operations, the filter cylinder can perform filtration on the liquid inlet through the filtration section near the pusher plate, thus ensuring the filtration effect of the filter cylinder without stopping the cooling tower, thereby ensuring the continuous and stable production of the cooling tower. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the liquid inlet of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a partial structural diagram of the liquid outlet of the present invention; Figure 5 for Figure 4 Enlarged structural diagram at point B; Figure 6 for Figure 4 Enlarged structural diagram at point C; Figure 7 This is a schematic diagram of a partial structure of the housing of the present invention; Figure 8 for Figure 7 Enlarged structural diagram at point D; Figure 9 for Figure 7 Enlarged structural diagram at point E; Figure 10 This is a schematic diagram of the trapezoidal block connection structure of the present invention.

[0019] Among them, 1. Shell; 101. Cylindrical cavity; 102. Liquid inlet; 103. Liquid outlet; 104. Filter cartridge; 2. Support frame; 201. Pressure sensor; 202. Support cartridge; 203. Water channel; 204. Impact nozzle; 205. Liquid channel; 3. Arc groove; 301. Arc plate; 302. Detection nozzle; 303. Flow channel; 4. Push plate; 401. Hydraulic motor; 402. Lead screw; 403. Smooth rod; 404. Strip groove; 405. No. 1 bevel gear shaft; 406. No. 1 bevel gear ring; 407. Double-headed bevel gear; 408. Slider; 409. Annular groove; 410. Drive gear; 411. Connecting... 412. Connecting gear; 413. Spur gear; 414. Protective shell; 415. Bellows; 416. Rotary ring; 5. Inlet; 501. Cavity; 502. Fluid changing plate; 503. Straight groove; 504. L-shaped groove; 505. Sealing plug; 506. Support spring; 507. Insert tube; 508. Groove No. 1; 509. Groove No. 2; 510. Trapezoidal block; 511. Hydraulic hole No. 1; 512. Hydraulic hole No. 2; 513. Sealing plate; 6. Worm gear; 601. Worm; 602. Connecting rod; 603. Bevel gear ring No. 2; 604. Bevel gear shaft No. 2; 605. Rectangular groove; 606. Electromagnetic plate; 607. Connecting spring. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see the appendix Figure 1 - Appendix Figure 8 This invention provides a filtration and anti-clogging device for the outlet pipe of a cooling tower, comprising a housing 1, a cylindrical cavity 101 inside the housing 1, and an inlet 102 and an outlet 103 at both ends of the housing 1 communicating with the cylindrical cavity 101. A filter cartridge 104 is slidably and sealed inside the cylindrical cavity 101. A support frame 2 is provided inside the cylindrical cavity 101 and is fixedly connected to the shell 1. An arc groove 3 is opened on the inner wall of the cylindrical cavity 101. An arc plate 301 is installed in the arc groove 3. A detection nozzle 302 is installed at the end of the arc plate 301 away from the arc groove 3. A pressure sensor 201 is installed on the surface of the support frame 2 and is directly opposite the detection nozzle 302. A push plate 4 is slidably connected inside the cylindrical cavity 101. A flange is fixedly connected to one end of the filter cylinder 104. The push plate 4 is connected to the flange at one end of the filter cylinder 104. A hydraulic motor 401 is installed on one side of the housing 1. A pushing unit is installed between the hydraulic motor 401 and the push plate 4. The hydraulic motor 401 drives the push plate 4 to slide inside the cylindrical cavity 101 through the pushing unit.

[0022] The driving unit includes a lead screw 402 and a guide rod 403. A strip groove 404 is provided on the inner wall of the cylindrical cavity 101. There are two strip grooves 404. The lead screw 402 and the guide rod 403 are rotatably connected in the strip groove 404. The push plate 4 is screw-driven to the lead screw 402. One end of the lead screw 402 is fixedly connected to a first bevel gear shaft 405. The output end of the hydraulic motor 401 is connected to a first bevel gear ring 406. The first bevel gear ring 406 and the first bevel gear shaft 405 are driven by a double-headed bevel gear 407.

[0023] Specifically, most existing cooling towers are anti-fogging and water-saving cooling towers. Compared with other flow-type anti-fogging module devices on the market, anti-fogging and water-saving cooling towers with plate-fin air coolers as packing modules have advantages such as large heat exchange area, low ventilation resistance, high water saving rate, low tower height, and stable and reliable operation. The filter screens used in defogging and water-saving cooling towers that use plate-fin air coolers as packing modules are mostly medium-mesh filters. This is because the gap between the plates and fins of the plate-fin air cooler is small. If a coarse-mesh filter is used, it is easy for the circulating water to carry large particles of impurities through the coarse-mesh filter and block the gap between the plates and fins. In addition, if the defogging and water-saving cooling tower is used in industries with high water quality requirements such as electronics, pharmaceuticals, and food, the defogging and water-saving cooling tower also needs to use a fine-mesh filter. Therefore, when filtering the defogging and water-saving cooling tower, the filter cylinder 104 used is mostly a medium-mesh filter cylinder 104. For industries with high water quality requirements, a fine-mesh filter cylinder 104 is used. The filter cylinder 104 is made of rigid stainless steel plate that is punched, rolled, and welded, so it has high strength and keeps the filter cylinder 104 in the cylindrical cavity 101 in a tight state against the inner wall of the cylindrical cavity 101 under the impact of water flow.

[0024] Flanges are installed on both the liquid inlet 102 and the liquid outlet 103 of the shell 1. During installation, the operator connects the liquid outlet 103 of the shell 1 to the water outlet pipe of the cooling tower water tank through the flange. The hydraulic motor 401 uses water as the driving medium. Therefore, the hydraulic motor 401 is connected to the external water source through the water pipe. Since the water outlet pipe of the cooling tower water tank is connected to the external circulating water pump, the operator controls the operation of the external circulating water pump during use to draw the circulating water in the cooling tower water tank. At this time, the circulating water in the cooling tower water tank enters the cylindrical cavity 101 through the liquid inlet 102 of the shell 1. When the circulating water enters the cylindrical cavity 101, it is blocked by the filter cylinder 104, which blocks large particles of dust, mud, and willow catkins in the circulating water. The circulating water then passes through the filter cylinder 104 and enters the cylindrical cavity 101, and flows out from the outlet 103. Since the outlet 103 of the shell 1 is connected to the water outlet pipe, the circulating water flowing out of the outlet 103 can enter the water outlet pipe and flow into the circulating water pump, which pressurizes the circulating water and delivers it to the heat exchange equipment. The temperature of the circulating water rises and it is delivered into the cooling tower. The cooling tower draws in outside air to cool the circulating water. After the circulating water is cooled to the specified temperature, it flows into the cooling tower water pool and then flows back into the circulating water pump through the outlet pipe, thus completing one cycle. As the circulating water is used, the outer wall of the filter cartridge 104 will continuously intercept and accumulate impurities such as dust, silt, and willow catkins, causing the filter holes to gradually become clogged. At this time, it is necessary to first stop the circulating water pump, and then control the external water source to supply liquid water to the hydraulic motor 401, thereby driving the hydraulic motor 401 to operate. The hydraulic motor 401 drives the double-headed bevel gear 407 to rotate through the first bevel gear ring 406 connected to it. Since the double-headed bevel gear 407 meshes with the first bevel gear shaft 405, the rotating double-headed bevel gear 407 can drive the first bevel gear shaft 405 to rotate, causing the first bevel gear shaft 405 to drive the lead screw 402 connected to it to rotate, so that the lead screw 402 can drive the push plate 4 to slide along the strip groove 404 towards the liquid inlet 102. Because a flange is installed at one end of the filter cylinder 104, and the push plate 4 is connected to the flange of the filter cylinder 104, the push plate 4 can push the filter cylinder 104 to move synchronously during the movement of the push plate 4. Since the filter cylinder 104 is in sealed contact with the inner wall of the cylindrical cavity 101, during the movement of the filter cylinder 104, the impurities attached to the outer ring wall of the filter cylinder 104 will be blocked by the end wall of the inlet 102 connected to the cylindrical cavity 101 and will be removed from the filter cylinder 104. At the same time, the part of the filter cylinder 104 near the push plate 4 moves towards the inlet 102. Since the part of the filter cylinder 104 near the push plate 4 is inside the cylindrical cavity 101, there are no impurities blocking it. Therefore, after the part of the filter cylinder 104 near the push plate 4 moves to the inlet 102, the filtration operation continues. Initially, the detection nozzle 302 is connected to an external water source via a water pipe. During the movement of the filter cartridge 104, it moves closer to the arc-shaped plate 301, passing through the gap between the arc-shaped plate 301 and the support frame 2. If damage detection of the filter cartridge 104 is required, simply control the external water source to supply liquid water into the detection nozzle 302, causing the nozzle to spray the liquid water towards the support frame 2. Part of the sprayed liquid water impacts the filter cartridge 104 and is blocked, while the other part... The water flow passes through the filter holes of the filter cartridge 104 and is directed to the pressure sensor 201 on the support frame 2. If the filter cartridge 104 is damaged, the flow resistance at the damaged point will be greatly reduced, thus significantly increasing the water penetration rate. At this time, the water flow impact pressure sensed by the pressure sensor 201 reaches the set threshold, and the pressure sensor 201 directly feeds the signal back to the cooling tower control system so that the operator can replace the filter cartridge 104 in a timely manner based on the feedback information, thus preventing the filter cartridge 104 from failing to effectively filter the circulating water. This invention utilizes the cooperation between the detection nozzle 302 and the pressure sensor 201. When the hydraulic motor 401 drives the push plate 4 to push the filter cylinder 104 between the detection nozzle 302 and the pressure sensor 201, impurities attached to the outer ring wall of the filter cylinder 104 are blocked and removed by the end wall of the liquid inlet 102 connected to the cylindrical cavity 101. The liquid water sprayed from the detection nozzle 302 passes through the cleaned filter cylinder 104 and impacts the pressure sensor 201. The pressure sensor 201 determines the damage condition of the filter cylinder 104 based on the detected impact force. Therefore, the detection can be completed without draining the water in the cooling tower pool, thereby reducing the downtime of the cooling tower and improving the overall operating efficiency of the cooling tower.

[0025] Please see the appendix Figure 2 - Appendix Figure 10 There are two sets of arc-shaped grooves 3, which are distributed on both sides of the liquid inlet 102.

[0026] A support cylinder 202 is installed on the outer ring wall of the support frame 2. A water channel 203 is opened on the surface of the support cylinder 202. An impact nozzle 204 is installed on the surface of the support cylinder 202 and surrounds the water channel 203.

[0027] The housing 1 has a water inlet 5 at one end and a cavity 501 inside. A liquid exchange plate 502 is slidably and sealed inside the cavity 501. A straight groove 503 and an L-shaped groove 504 are formed on the surface of the liquid exchange plate 502. A liquid channel 205 communicating with an impact nozzle 204 is formed inside the support frame 2. The end of the liquid channel 205 away from the impact nozzle 204 is connected to the cavity 501. A flow channel 303 communicating with a detection nozzle 302 is formed inside the housing 1. The end of the flow channel 303 away from the detection nozzle 302 is connected to the cavity 501. A sealing plug 505 is installed inside the L-shaped groove 504. The sealing plug 505 is connected to the groove wall of the L-shaped groove 504 by a support spring 506. An insertion tube 507 is fixed to the upper wall of the cavity 501. The cross-section of the insertion tube 507 is trapezoidal. A lifting unit is installed inside the housing 1. The lifting unit is used to push the liquid changing plate 502 to slide inside the cavity 501.

[0028] The lifting unit includes a first groove 508 and a second groove 509. Both the first groove 508 and the second groove 509 are formed on the inner wall of the strip groove 404. Trapezoidal blocks 510 are slidably connected in both the first groove 508 and the second groove 509. The first groove 508 is connected to the cavity 501 through the first hydraulic hole 511, and the second groove 509 is connected to the cavity 501 through the second hydraulic hole 512. A sealing plate 513 is slidably and sealingly connected in the cavity 501. The sealing plate 513 is fixed to the lower end of the fluid exchange plate 502 and slides between the first hydraulic hole 511 and the second hydraulic hole 512.

[0029] Specifically, although large-particle impurities attached to the outer ring wall of the filter cartridge 104 will be blocked by the end wall of the inlet 102 connected to the cylindrical cavity 101 and detached from the filter cartridge 104, small-particle sludge and algae will clog the filter holes of the filter cartridge 104. If the filter cartridge 104 is only slightly damaged and the filter holes around the damaged area are blocked, the water flow will only pass through the broken part of the filter cartridge 104. At this time, the impact force of the water flow passing through the broken part of the filter cartridge 104 on the pressure sensor 201 is lower than the threshold of the pressure sensor 201, which will cause the pressure sensor 201 to fail to provide accurate feedback information, thus resulting in missed detection. To address this, an impact nozzle 204 is installed. Before the filter cartridge 104 moves between the detection nozzle 302 and the pressure sensor 201, the impact nozzle 204 impacts the filter holes on the inner wall of the filter cartridge 104, causing small-diameter sludge and algae to detach from the filter cartridge 104. This ensures that the water jet from the detection nozzle 302 can pass through the filter holes normally, preventing the water jet from the filter cartridge 104 from breaking due to filter hole blockage. The impact force on the pressure sensor 201 is lower than the threshold of the pressure sensor 201, thus ensuring the accuracy of the pressure sensor 201's detection results. Furthermore, the impact nozzle 204 is tilted towards the edge connecting the inlet 102 and the cylindrical cavity 101, allowing impurities and algae blocked near the cylindrical cavity 101 of the inlet 102 to be flushed out of the inlet 102 by the water jet from the impact nozzle 204. This prevents the inlet 102 from being blocked by impurities and algae near the cylindrical cavity 101, thereby increasing the circulating water flow rate in the inlet 102.

[0030] The inlet 5 is H-shaped, with one end serving as the inlet and connected to an external water source, and the other two ends serving as outlets and connected to the cavity 501. Grooves 508 and 509 are located within a strip groove 404 containing a lead screw 402. Initially, the push plate 4 is positioned at the end of the strip groove 404 furthest from the inlet 102. At this time, the push plate 4 is above groove 508, and the trapezoidal block 510 within groove 508 is completely inserted into it due to the pressure from the push plate 4. Simultaneously, the sealing plate 513 within the cavity 501 is pushed by hydraulic oil and positioned at the bottom of the cavity 501. The liquid exchange plate 502 drives the straight groove 503 to connect with the water outlet of the inlet 5 located below, while the water outlet of the inlet 5 located above is blocked by the liquid exchange plate 502. When the hydraulic motor 401 drives the screw 402 to rotate, the screw 402 can drive the push plate 4 to approach the liquid inlet 102, so that the push plate 4 pushes the filter cylinder 104 to move synchronously. At this time, the external water source is controlled to flow into the liquid channel 205 through the inlet 5 and the straight groove 503, so that the liquid water entering the liquid channel 205 can be sprayed out from the impact nozzle 204 connected to the liquid channel 205, so that the water flow sprayed out by the impact nozzle 204 washes the filter holes of the moving filter cylinder 104. When the push plate 4 moves to the second groove 509, the push plate 4 first contacts the trapezoidal block 510 in the second groove 509, causing the push plate 4 to push the trapezoidal block 510 in the second groove 509 into the second groove 509. This causes the hydraulic oil in the second groove 509 to flow into the cavity 501 through the second hydraulic hole 512. Since the second hydraulic hole 512 is located below the sealing plate 513, the hydraulic oil flowing into the cavity 501 through the second hydraulic hole 512 will push the sealing plate 513 to rise in the cavity 501. This causes the sealing plate 513 to push the hydraulic oil above to flow into the first groove 508 through the first hydraulic hole 511. This causes the trapezoidal block 510 in the first groove 508 to be pushed out of the first groove 508 by the hydraulic oil. During the rising process of the sealing plate 513, the sealing plate 513 will push the upper connected fluid exchange plate 502 to rise, so that the fluid exchange plate 502 can drive the L-shaped groove 504 to rise, so that the insertion tube 507 connected to the upper end of the fluid exchange plate 502 can be inserted into the L-shaped groove 504. The insertion tube 507 pushes the sealing plug 505 in the L-shaped groove 504 to squeeze the support spring 506 into the L-shaped groove 504. Since the cross section of the insertion tube 507 is trapezoidal, the lower end of the insertion tube 507 is in non-sealed contact with the sealing plug 505. Therefore, the insertion tube 507 will be connected to the L-shaped groove 504. As the fluid exchange plate 502 rises, it drives the straight channel 503 and the L-shaped channel 504 to rise as well. The L-shaped channel 504 connects to the outlet end of the inlet 5 located above it, while the straight channel 503 passes over the outlet end of the inlet 5 located below it. This causes the outlet end of the inlet 5 located below it to be blocked by the fluid exchange plate 502, so that external water can only flow into the L-shaped channel 504 through the inlet 5, and then into the flow channel 303 through the L-shaped channel 504, causing the liquid flowing into the flow channel 303 to... The water can enter the detection nozzle 302, making the detection nozzle 302 connected to the external water source. If it is necessary to perform damage detection on the filter cartridge 104, simply control the hydraulic motor 401 to drive the screw 402 to rotate in the opposite direction, so that the push plate 4 pulls the filter cartridge 104 away from the liquid exchange plate 502. At the same time, control the external water source to enter the L-shaped groove 504 through the water inlet 5, so that the detection nozzle 302 can perform damage detection on the filter cartridge 104 by spraying water. By setting the length of the filter cylinder 104 to be much greater than the diameter of the inlet 102, the pusher plate 4 can push the filter section of the filter cylinder 104 near the pusher plate 4 to the inlet 102, thereby blocking impurities from the inlet 102 from flowing into the outlet pipe. If the front filtration area of ​​the filter cylinder 104 is damaged and the cooling tower cannot be stopped due to emergency operations, the filter cylinder 104 can perform filtration on the inlet 102 through the filtration section near the pusher plate 4, thus ensuring the filtration effect of the filter cylinder 104 without stopping the cooling tower, thereby ensuring the continuous and stable production of the cooling tower. Since there are two sets of arc grooves 3, there are also two sets of arc plate 301 and pressure sensor 201. When the filter cylinder 104 is pulled by the push plate 4 to move closer to the hydraulic motor 401, the water jet from the detection nozzle 302 near the hydraulic motor 401 will perform damage detection on the part of the filter cylinder 104 near the push plate 4, thereby improving the detection coverage of the surface area of ​​the filter cylinder 104, improving detection accuracy and reliability. At the same time, the two sets of detection devices can be used as backups for each other. If one set fails, the detection function can still be maintained, further improving the system's operational stability and maintenance convenience.

[0031] Please see the appendix Figure 4 - Appendix Figure 10Two sliders 408 are slidably connected in the two strip grooves 404. The lead screw 402 is screw-driven to the sliders 408. The guide rod 403 is in sliding contact with the sliders 408. The push plate 4 has an annular groove 409 on the side near the sliders 408. The sliders 408 are slidably connected in the annular groove 409. The surface of the guide rod 403 is slidably connected to the drive gear 410. A connecting gear 411 is provided on one side of the drive gear 410 and meshes with it. The connecting gear 411 is rotatably connected to the sliders 408. A spur gear 412 that meshes with the connecting gear 411 is fixedly installed on one side of the push plate 4. A transmission unit is provided between the guide rod 403 and the hydraulic motor 401. The hydraulic motor 401 drives the guide rod 403 to rotate through the transmission unit.

[0032] The transmission unit includes a worm gear 6 and a worm 601. The worm gear 6 is fixedly connected to the smooth rod 403, and the worm 601 is rotatably connected to the housing 1. The worm 601 meshes with the worm gear 6. A connecting rod 602 is provided inside the housing 1. A first bevel gear ring 406 is connected to the end of the connecting rod 602 away from the hydraulic motor 401. A second bevel gear ring 603 is installed at the end of the connecting rod 602 close to the hydraulic motor 401. A second bevel gear shaft 604 is provided on one side of the second bevel gear ring 603 to mesh with it. The second bevel gear shaft 604 is fixedly connected to the worm gear 601. A rectangular groove 605 is provided at one end of the connecting rod 602 near the hydraulic motor 401. The output end of the hydraulic motor 401 is slidably connected in the rectangular groove 605. An electromagnetic plate 606 is installed at the bottom of the rectangular groove 605. The electromagnetic plate 606 is connected to the output end of the hydraulic motor 401 by a connecting spring 607.

[0033] A protective shell 413 is provided on one side of the push plate 4. The protective shell 413 is rotatably and sealed to the push plate 4. The protective shell 413 is fixedly connected to the slider 408. The drive gear 410, spur gear 412 and connecting gear 411 are all located inside the protective shell 413.

[0034] A bellows 414 is fitted on the surface of the lead screw 402, and a rotating ring 415 is rotatably connected in the annular groove 409. The rotating ring 415 is connected to the slider 408.

[0035] Specifically, the arc-shaped plate 301 is positioned above the filter cylinder 104. When the push plate 4 needs to push the filter cylinder 104 towards the inlet 102, the hydraulic motor 401 is controlled to operate. This allows the rectangular end of the hydraulic motor 401 to rotate the connecting rod 602 via the inner wall of the rectangular groove 605. The connecting rod 602 then rotates one end of the first bevel gear ring 406, which in turn drives the first bevel gear shaft 405 to rotate via the meshing double-headed bevel gear 407. The first bevel gear shaft 405 then rotates the lead screw 402. The rotating lead screw 402 drives the connected slider 408 along the strip groove 404. The slider 408 moves towards the inlet 102 because it is rotatably connected to the annular groove 409 on one side of the push plate 4. This allows the slider 408 to push the push plate 4 synchronously through the groove wall of the annular groove 409. When the filter section of the filter cartridge 104, away from the push plate 4, completely passes the inlet 102, the control electromagnetic plate 606 is energized. This causes the electromagnetic plate 606 to generate a magnetic attraction force on the rectangular end of the hydraulic motor 401. The electromagnetic plate 606 then drives the connected connecting rod 602 to compress the connecting spring 607 and move towards the hydraulic motor 401. At this time, the connecting rod 602 drives the first bevel gear ring 406 away from the double-headed bevel gear 407. Simultaneously, the connecting rod... 602 drives the second bevel gear ring 603 closer to the second bevel gear shaft 604 until the second bevel gear ring 603 meshes with the second bevel gear shaft 604. This controls the hydraulic motor 401 to drive the connecting rod 602 to rotate, causing the connecting rod 602 to drive the second bevel gear shaft 604 to rotate via the second bevel gear ring 603. The rotating second bevel gear shaft 604 drives the worm gear 601 connected to its upper end to rotate, enabling the worm gear 601 to drive the worm wheel 6 to rotate. The worm wheel 6 then drives the polished rod 403 to rotate. During the rotation of the polished rod 403, it drives the drive gear 410, which is slidably connected to it, to rotate. This allows the drive gear 410 to mesh with the connecting gear 403. 11 drives the spur gear 412 to rotate, which in turn drives the push plate 4 to rotate. The push plate 4 then drives the filter cylinder 104 connected to it to rotate along the axis of the cylindrical cavity 101. After the filter cylinder 104 rotates 90°, the filter section of the filter cylinder 104 faces the upper arc plate 301. At this time, the water inlet 5 is connected to the detection nozzle 302 through the L-shaped groove 504. When it is necessary to detect the damage of the filter cylinder 104, the external water source is controlled to enter the detection nozzle 302, so that the water jet from the detection nozzle 302 passes through the filter cylinder 104 and impacts the pressure sensor 201. The pressure sensor 201 judges the damage of the filter cylinder 104 based on the detected impact force. By rotating the filter cartridge 104, the filter cartridge 104 faces the liquid inlet 102 sequentially through different circumferential surfaces. This prevents a localized area of ​​the filter cartridge 104 from continuously filtering impurities and algae at the liquid inlet 102, reducing the corrosion intensity of localized areas on the surface of the filter cartridge 104 and greatly improving its service life. Furthermore, even if the upward-facing part of the filter cartridge 104 is found to be damaged, the part of the filter cartridge 104 facing the liquid inlet 102 remains intact. Therefore, localized damage to the filter cartridge 104 does not affect its filtration effect, further improving the performance and service life of the filter cartridge 104. By setting up a protective shell 413, the drive gear 410, spur gear 412, and connecting gear 411 are installed inside the protective shell 413. This prevents impurities such as mud and algae carried in the circulating water from passing through the gap between the support frame 2 and the cylindrical cavity 101 and adhering to the meshing gap of the drive gear 410, spur gear 412, and connecting gear 411. On the one hand, this prevents impurities from corroding the drive gear 410, spur gear 412, and connecting gear 411. On the other hand, it prevents impurities from clogging the drive gear 410, spur gear 412, and connecting gear 411 and their meshing gaps. This improves the service life and normal operation of the drive gear 410, spur gear 412, and connecting gear 411.

[0036] By setting the bellows 414 and the annular plate, the bellows 414 can protect the lead screw 402, preventing impurities in the circulating water from clogging the thread grooves on the surface of the lead screw 402. At the same time, it prevents impurities and algae from corroding the lead screw 402. The annular plate is set to block impurities in the circulating water from entering the annular groove 409, so as to ensure that the slider 408 can slide normally and stably in the annular groove 409, thereby ensuring the normal and stable operation of the present invention.

[0037] Work process: During installation, the operator connects the liquid inlet 102 end of the housing 1 to the water outlet pipe of the cooling tower water tank through the flange. The hydraulic motor 401 uses water as the driving medium, so the hydraulic motor 401 is connected to the external water source through the water pipe. Since the water outlet pipe of the cooling tower water tank is connected to the external circulating water pump, the operator controls the operation of the external circulating water pump during use, so that the circulating water pump draws the circulating water in the cooling tower water tank. At this time, the circulating water in the cooling tower water tank enters the cylindrical cavity 101 through the liquid inlet 102 of the housing 1. When the circulating water enters the cylindrical cavity 101, it is blocked by the filter cylinder 104, which blocks large particles of dust, mud, and willow catkins in the circulating water. The circulating water then passes through the filter cylinder 104 and enters the cylindrical cavity 101, and flows out from the outlet 103. Since the outlet 103 of the shell 1 is connected to the water outlet pipe, the circulating water flowing out of the outlet 103 can enter the water outlet pipe and flow into the circulating water pump, which pressurizes the circulating water and delivers it to the heat exchange equipment. The temperature of the circulating water rises and it is delivered into the cooling tower. The cooling tower draws in outside air to cool the circulating water. After the circulating water is cooled to the specified temperature, it flows into the cooling tower water pool and then flows back into the circulating water pump through the outlet pipe, thus completing one cycle. In the initial state, the push plate 4 is located at the end of the strip groove 404 away from the liquid inlet 102. At this time, the push plate 4 is located above the first groove 508, and the trapezoidal block 510 in the first groove 508 is completely inserted into the first groove 508 due to the squeezing of the push plate 4. At this time, the sealing plate 513 in the cavity 501 is pushed by the hydraulic oil and located at the bottom of the cavity 501. At the same time, the liquid exchange plate 502 drives the straight groove 503 to connect with the water outlet of the inlet 5 located below, while the water outlet of the inlet 5 located above is blocked by the liquid exchange plate 502. When the hydraulic motor 401 drives the screw 402 to rotate, the screw 402 can drive the push plate 4 to approach the liquid inlet 102, so that the push plate 4 pushes the filter cylinder 104 to move synchronously. At this time, the water inlet 5 is connected to the impact nozzle 204 through the straight groove 503 and the liquid channel 205. When it is necessary to clean the impurities blocked in the filtration area of ​​the filter cartridge 104, the hydraulic motor 401 is controlled to operate, so that the rectangular end of the hydraulic motor 401 can drive the connecting rod 602 to rotate through the inner wall of the rectangular groove 605 of the connecting rod 602. This causes the connecting rod 602 to drive the first bevel gear ring 406 at one end to rotate, which in turn drives the first bevel gear shaft 405 to rotate through the double-headed bevel gear 407 meshing with it. This causes the first bevel gear shaft 405 to drive the lead screw 402 to rotate, and the rotating lead screw 402 can drive the connected lead screw to rotate. The slider 408 moves along the strip groove 404 toward the liquid inlet 102. Because the slider 408 is rotatably connected to the annular groove 409 on one side of the push plate 4, the slider 408 can push the push plate 4 to move synchronously through the groove wall of the annular groove 409. At the same time, the external water source is controlled to enter the impact nozzle 204 through the water inlet 5, so that the liquid water entering the liquid channel 205 can be sprayed out from the impact nozzle 204 connected to the liquid channel 205, so that the water flow sprayed out by the impact nozzle 204 can rinse the filter holes of the moving filter cartridge 104. When the push plate 4 moves to the second groove 509, the push plate 4 first contacts the trapezoidal block 510 in the second groove 509, causing the push plate 4 to push the trapezoidal block 510 in the second groove 509 into the second groove 509. This causes the hydraulic oil in the second groove 509 to flow into the cavity 501 through the second hydraulic hole 512. Since the second hydraulic hole 512 is located below the sealing plate 513, the hydraulic oil flowing into the cavity 501 through the second hydraulic hole 512 will push the sealing plate 513 to rise in the cavity 501. This causes the sealing plate 513 to push the hydraulic oil above to flow into the first groove 508 through the first hydraulic hole 511. This causes the trapezoidal block 510 in the first groove 508 to be pushed out of the first groove 508 by the hydraulic oil. During the rising process of the sealing plate 513, the sealing plate 513 will push the upper connected fluid exchange plate 502 to rise, so that the fluid exchange plate 502 can drive the L-shaped groove 504 to rise, so that the insertion tube 507 connected to the upper end of the fluid exchange plate 502 can be inserted into the L-shaped groove 504. The insertion tube 507 pushes the sealing plug 505 in the L-shaped groove 504 to squeeze the support spring 506 into the L-shaped groove 504. Since the cross section of the insertion tube 507 is trapezoidal, the lower end of the insertion tube 507 is in non-sealed contact with the sealing plug 505. Therefore, the insertion tube 507 will be connected to the L-shaped groove 504. During the upward movement of the liquid exchange plate 502, it drives the straight groove 503 and the L-shaped groove 504 to rise. The L-shaped groove 504 connects to the outlet end of the inlet 5 located above, while the straight groove 503 passes over the outlet end of the inlet 5 located below, causing the outlet end of the inlet 5 located below to be blocked by the liquid exchange plate 502. This allows external water to flow into the L-shaped groove 504 through the inlet 5 and then into the flow channel 303. This allows the liquid water flowing into the flow channel 303 to enter the detection nozzle 302, connecting the detection nozzle 302 to the external water source. If it is necessary to perform damage detection on the filter cartridge 104, simply control the hydraulic motor 401 to drive the lead screw 402 to rotate in the opposite direction, causing the push plate 4 to pull the filter cartridge 104 away from the liquid exchange plate 502. When the filter section of the filter cartridge 104, away from the push plate 4, completely passes the inlet 102, if a damage detection of the filter cartridge 104 is required, the control electromagnetic plate 606 is energized, causing it to generate a magnetic attraction force on the rectangular end of the hydraulic motor 401. This causes the electromagnetic plate 606 to drive the connected connecting rod 602 to compress the connecting spring 607 and move it closer to the hydraulic motor 401. At this time, the connecting rod 602 drives the first bevel gear ring 406 away from the double-headed bevel gear 407. Simultaneously, the connecting rod 602 drives the second bevel gear ring 603 closer to the second bevel gear shaft 604 until the second bevel gear ring 603 meshes with the second bevel gear shaft 604. The control hydraulic motor 401 then drives the connecting rod 602 to rotate, causing the connecting rod 602 to rotate. The connecting rod 602 drives the second bevel gear shaft 604 to rotate via the second bevel gear ring 603. The rotating second bevel gear shaft 604 drives the worm 601 connected to the upper end to rotate, so that the worm 601 can drive the worm wheel 6 to rotate, and the worm wheel 6 drives the polished rod 403 to rotate. During the rotation of the polished rod 403, the polished rod 403 can drive the drive gear 410 slidably connected to it to rotate, so that the drive gear 410 drives the spur gear 412 to rotate through the connecting gear 411 meshing with it, so that the spur gear 412 drives the push plate 4 to rotate, so that the push plate 4 drives the filter cylinder 104 connected to it to rotate along the axis of the cylindrical cavity 101. After the filter cylinder 104 rotates 90°, the filter section of the filter cylinder 104 faces the upper arc plate 301. At this time, the water inlet 5 is connected to the detection nozzle 302 through the L-shaped groove 504, and the external water source is controlled to enter the L-shaped groove 504 through the water inlet 5, so that the water jet from the detection nozzle 302 passes through the filter cylinder 104 and impacts the pressure sensor 201. The pressure sensor 201 judges the damage of the filter cylinder 104 based on the detected impact force.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filtration and anti-clogging device for the outlet pipe of a cooling tower, comprising a housing (1), wherein a cylindrical cavity (101) is provided inside the housing (1), and an inlet (102) and an outlet (103) communicating with the cylindrical cavity (101) are provided at both ends of the housing (1), characterized in that: A filter cartridge (104) is slidably and sealed inside the cylindrical cavity (101). A support frame (2) is provided inside the cylindrical cavity (101). The support frame (2) is fixedly connected to the shell (1). An arc groove (3) is opened on the inner wall of the cylindrical cavity (101). An arc plate (301) is installed inside the arc groove (3). A detection nozzle (302) is installed at the end of the arc plate (301) away from the arc groove (3). A pressure sensor (201) is installed on the surface of the support frame (2). The pressure sensor (201) is directly opposite the detection nozzle (302). A push plate (4) is slidably connected inside the cylindrical cavity (101). A flange is fixedly connected to one end of the filter cylinder (104). The push plate (4) is connected to the flange at one end of the filter cylinder (104). A hydraulic motor (401) is installed on one side of the housing (1). A pushing unit is installed between the hydraulic motor (401) and the push plate (4). The hydraulic motor (401) drives the push plate (4) to slide inside the cylindrical cavity (101) through the pushing unit.

2. The filtration and anti-clogging device for the outlet pipe of a cooling tower as described in claim 1, characterized in that: The pushing unit includes a lead screw (402) and a guide rod (403). The inner wall of the cylindrical cavity (101) is provided with a strip groove (404). There are two strip grooves (404). The lead screw (402) and the guide rod (403) are rotatably connected in the strip groove (404). The push plate (4) is helically connected to the lead screw (402). One end of the lead screw (402) is fixedly connected to a first bevel gear shaft (405). The output end of the hydraulic motor (401) is connected to a first bevel gear ring (406). The first bevel gear ring (406) and the first bevel gear shaft (405) are driven by meshing transmission through a double-headed bevel gear (407).

3. The filtration and anti-clogging device for the outlet pipe of a cooling tower as described in claim 1, characterized in that: The arc-shaped groove (3) is provided in two sets, and the two sets of arc-shaped grooves (3) are distributed on both sides of the liquid inlet (102).

4. A filter and anti-clogging device for the outlet pipe of a cooling tower as described in claim 1, characterized in that: The outer ring wall of the support frame (2) is equipped with a support cylinder (202), the surface of the support cylinder (202) is provided with a water channel (203), and an impact nozzle (204) is installed on the surface of the support cylinder (202), the impact nozzle (204) surrounds the water channel (203).

5. A filter and anti-clogging device for the outlet pipe of a cooling tower as described in claim 1, characterized in that: The housing (1) has a water inlet (5) at one end and a cavity (501) inside. A liquid exchange plate (502) is slidably and sealed inside the cavity (501). A straight groove (503) and an L-shaped groove (504) are formed on the surface of the liquid exchange plate (502). A liquid channel (205) communicating with an impact nozzle (204) is formed inside the support frame (2). The end of the liquid channel (205) away from the impact nozzle (204) is connected to the cavity (501). A flow channel (303) communicating with a detection nozzle (302) is formed inside the housing (1). The end of the flow channel (303) away from the detection nozzle (302) is connected to the cavity (501). A sealing plug (505) is installed in the L-shaped groove (504). The sealing plug (505) is connected to the groove wall of the L-shaped groove (504) by a support spring (506). An insertion tube (507) is fixed to the upper wall of the cavity (501). The cross-section of the insertion tube (507) is trapezoidal. A lifting unit is installed in the housing (1). The lifting unit is used to push the liquid changing plate (502) to slide in the cavity (501).

6. A filter and anti-clogging device for the outlet pipe of a cooling tower as described in claim 5, characterized in that: The lifting unit includes a first groove (508) and a second groove (509). Both the first groove (508) and the second groove (509) are formed on the inner wall of the strip groove (404). Trapezoidal blocks (510) are slidably connected in both the first groove (508) and the second groove (509). The first groove (508) is connected to the cavity (501) through a first hydraulic hole (511), and the second groove (509) is connected to the cavity (501) through a second hydraulic hole (512). A sealing plate (513) is slidably and sealingly connected in the cavity (501). The sealing plate (513) is fixed to the lower end of the fluid exchange plate (502) and slides between the first hydraulic hole (511) and the second hydraulic hole (512).

7. A filtration and anti-clogging device for the outlet pipe of a cooling tower as described in claim 2, characterized in that: Both of the two strip grooves (404) are slidably connected to sliders (408). The lead screw (402) is helically connected to the sliders (408). The guide rod (403) is in slidable contact with the sliders (408). The push plate (4) has an annular groove (409) on the side near the sliders (408). The sliders (408) are slidably connected in the annular groove (409). The guide rod (403) is slidably connected to a drive gear (410). A connecting gear (411) is provided on one side of the drive gear (410) and meshes with it. The connecting gear (411) is rotatably connected to the sliders (408). A spur gear (412) meshing with the connecting gear (411) is fixedly installed on one side of the push plate (4). A transmission unit is provided between the guide rod (403) and the hydraulic motor (401). The hydraulic motor (401) drives the guide rod (403) to rotate through the transmission unit.

8. A filter anti-clogging device for the outlet pipe of a cooling tower as described in claim 7, characterized in that: The transmission unit includes a worm wheel (6) and a worm (601). The worm wheel (6) is fixedly connected to the smooth rod (403), and the worm (601) is rotatably connected to the housing (1). The worm (601) meshes with the worm wheel (6). A connecting rod (602) is provided inside the housing (1). The first bevel gear ring (406) is connected to the end of the connecting rod (602) away from the hydraulic motor (401). A second bevel gear ring (603) is installed at the end of the connecting rod (602) close to the hydraulic motor (401). A second bevel gear shaft (604) is provided on one side of the second bevel gear ring (603) and meshes with it. The second bevel gear shaft (604) is fixedly connected to the worm gear (601). The connecting rod (602) has a rectangular groove (605) at one end near the hydraulic motor (401). The output end of the hydraulic motor (401) is slidably connected in the rectangular groove (605). An electromagnetic plate (606) is installed at the bottom of the rectangular groove (605). The electromagnetic plate (606) is connected to the output end of the hydraulic motor (401) by a connecting spring (607).

9. A filter and anti-clogging device for the outlet pipe of a cooling tower as described in claim 7, characterized in that: A protective shell (413) is provided on one side of the push plate (4). The protective shell (413) is rotatably and sealed to the push plate (4). The protective shell (413) is fixedly connected to the slider (408). The drive gear (410), spur gear (412) and connecting gear (411) are all located inside the protective shell (413).

10. A filter and anti-clogging device for the outlet pipe of a cooling tower as described in claim 7, characterized in that: The lead screw (402) is fitted with a bellows (414), and a rotating ring (415) is rotatably connected in the annular groove (409). The rotating ring (415) is connected to the slider (408).

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