Automatic cleaning device for filter screen of water cooling tower

Abstract

The invention discloses an automatic cleaning device for a filter screen of a water cooling tower, which comprises a water tank inlet, guide sleeve plates are nested on two sides of the front end of the water tank inlet, a filter frame plate is slidably mounted between the two guide sleeve plates, a first filter screen is nested in the rear end of the filter frame plate, and a support sleeve plate is hinged to the top of the filter frame plate through a pin shaft. A lifting device capable of being in transmission with the top of the supporting sleeve plate is installed at the front end of the pool inlet. According to the automatic cleaning device for the filter screen of the water cooling tower, the power device, the second synchronous belt, the first transmission shaft, the multiple second transmission shafts, the multiple first synchronous belts and the multiple brush plate assemblies are arranged to form a cleaning transmission structure aiming at the first filter screen; the power device synchronously drives the first transmission shaft and the second transmission shaft through the second synchronous belt and the multiple first synchronous belts, and then the second transmission shaft drives the brush plate assembly to conduct brushing and unblocking on the surface of the front end of the first filter screen.

Description

Technical Field

[0001] This invention relates to the field of cooling tower cleaning technology, specifically to an automatic cleaning device for cooling tower filters. Background Technology

[0002] Cooling towers are structures used to cool water. They are commonly found in power plants, chemical plants, cement plants, and other factories that require strict control of water temperature. Their height is determined by calculations based on the heat exchange capacity. After use, they can achieve water conservation and water recycling.

[0003] However, in reality, the filter screens of the water tanks connected to the cooling towers are prone to clogging in spring and summer due to the growth of willow catkins and algae. Currently, the main method of cleaning relies on personnel inspections and monitoring of the liquid level difference using DCS measurement points to determine whether to clean the filter screens. Cleaning the filter screens requires manual lifting and mechanical rinsing. There is also the possibility that personnel may not notice the problem in time, leading to a water supply interruption. Furthermore, the cleaning process is time-consuming and consumes a lot of manpower and resources. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic cleaning device for cooling tower filters, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic cleaning device for a cooling tower filter screen, comprising a water tank inlet, guide sleeve plates nested on both sides of the front end of the water tank inlet, a filter frame plate slidably installed between the two guide sleeve plates, a first filter screen nested in the rear end of the filter frame plate, a support sleeve plate hinged to the top of the filter frame plate by a pin, a lifting device capable of transmission with the top of the support sleeve plate installed at the front end of the water tank inlet, a gear connected to the end of the pin in the top of the filter frame plate, a straight tooth plate installed on the top of the guide sleeve plate, and during the upward transmission of the filter frame plate by the lifting device through the support sleeve plate, the gear meshes with the straight tooth plate, causing the filter frame plate to rise first and then rotate until it is displaced to the water surface to make room;

[0006] The filter frame plate is fitted with a first drive shaft and several second drive shafts. A first synchronous belt is installed between one end of the first drive shaft and one end of the adjacent second drive shaft. A brush plate assembly is installed on the surface of the other end of the second drive shaft. A power device is installed at the top front end of the filter frame plate, and a second synchronous belt is installed between the output structure of the power device and the first drive shaft.

[0007] Preferably, the lifting device includes a composite housing, an electro-hydraulic rod, a transmission frame, and a radar level gauge. The rear end of the composite housing is fixed to the top front end of the water tank inlet, and the electro-hydraulic rod and the radar level gauge are respectively installed in the middle and one side of the composite housing. The transmission frame is located on the top outside of the composite housing and serves as the output structure of the lifting device, which is connected to the output end of the electro-hydraulic rod. The bottom end of the transmission frame is fixed to the top of the support sleeve.

[0008] Preferably, the detection end of the radar level gauge extends to the bottom outside of the composite housing, and the detection direction of the radar level gauge faces the bottom of the water tank inlet, enabling non-contact measurement of the water level height.

[0009] Preferably, the power unit includes a servo motor and a bevel gearbox, and a protective shell is fitted on the outside of the servo motor housing and mounted on the front surface of the filter frame plate. The bevel gearbox is mounted on the top of the filter frame plate, and the input end of the bevel gearbox is connected to the output end of the servo motor. The second synchronous belt drive is installed between the output end of the bevel gearbox and one end of the first drive shaft.

[0010] Preferably, the brush plate assembly includes a support plate, one end of which is fixed to the surface of the other end of the second drive shaft, and a plurality of brush strips are mounted on the support plate in a transverse arrangement along its own structure, with one end of each brush strip being attached to the front end surface of the first filter screen.

[0011] Preferably, the water supply direction of the pool inlet is from the front end of the filter frame plate to the rear end of the filter frame plate, and the bottom structure of the guide sleeve plate is provided with a positioning groove that can engage and limit the positioning with the bottom structure of the filter frame plate.

[0012] Preferably, a second filter screen is fixedly sleeved inside the side wall at the front end of the filter frame plate, and the mesh number of the second filter screen is less than the mesh number of the first filter screen. The second filter screen and the first filter screen form a temporary storage space inside the filter frame plate.

[0013] Preferably, positioning cone rods are fixed on both sides of the support sleeve, and positioning holes are opened on both sides of the top of the water tank inlet. As the support sleeve rises and falls, the positioning cone rods can be reciprocated to fit or separate from the corresponding positioning holes.

[0014] Preferably, the front end structure of the filter frame plate is provided with a flow guide groove, the interior of the second drive shaft is set as a semi-open hollow structure, and a transition pipe is provided between the flow guide groove and the second drive shaft. A conduit communicating with its own space is fixed on the surface of one end of the second drive shaft, and a number of nozzles communicating with their own space are arranged along the transverse arrangement of the conduit.

[0015] Preferably, the transition pipe includes a transition pipe and a sealing ring. One end of the transition pipe is fixedly sleeved in the front end structure of the filter frame plate and communicates with the flow guide groove space. The other end of the transition pipe is sleeved in the open port of the second drive shaft, and the sealing ring is nested in the sleeve of the transition pipe and the second drive shaft for sealing.

[0016] Preferably, a water pump assembly is installed inside the other side of the composite housing. The output end and input end of the water pump assembly are respectively connected to an elastic spiral tube and a diversion tube. One end of the elastic spiral tube is installed inside the front end of the filter frame plate and communicates with the space of the guide groove. One end of the diversion tube passes through the composite housing and extends to the bottom of the water tank inlet.

[0017] Preferably, threaded holes are provided on both sides of the bottom of the filter frame plate, and a collection cylinder is threadedly connected to the threaded hole. Both ends of the collection cylinder are open structures, and a protective filter screen is fixedly nested inside one end of the collection cylinder.

[0018] This invention provides an automatic cleaning device for cooling tower filters, which has the following beneficial effects:

[0019] 1. This automatic cleaning device for the cooling tower filter screen is a multi-functional filter screen structure composed of a filter frame plate, a first filter screen, a support sleeve plate, a straight tooth plate, and gears. When used in combination with the water tank inlet and two guide sleeve plates, it can not only meet the filtration needs, but also, when cleaning is required, the lifting device drives the filter frame plate, the first filter screen, and related structures through the straight tooth plate to first rise and then flip to move away from the water surface. A series of automatic adjustments meet the subsequent cleaning and cleaning clearance needs.

[0020] 2. This automatic cleaning device for the cooling tower filter screen forms a cleaning transmission structure for the first filter screen through a power unit, a second synchronous belt, a first drive shaft, multiple second drive shafts, multiple first synchronous belts, and multiple brush plate assemblies. When used in combination with the aforementioned multi-functional filter screen structure, the filter frame plate, the first filter screen, and related structures first rise and then flip to move away from the water surface. The power unit then synchronously drives the first drive shaft and the second drive shaft through the second synchronous belt and multiple first synchronous belts. This causes the second drive shaft to drive its corresponding brush plate assembly to automatically clean and unclogging the front surface of the first filter screen, ensuring the continuous filtration effect of the first filter screen.

[0021] 3. The automatic cleaning device for the cooling tower filter screen uses a guide channel and a hollow second drive shaft as clearance space. When combined with the water pump assembly, transition pipe, conduit, and multiple spray pipes, it forms another cleaning device for backwashing the first filter screen. Subsequently, after the filter frame plate, the first filter screen, and related structures are first raised and then flipped to make way away from the water surface, the brush plate assembly simultaneously performs backwashing cleaning on the first filter screen, which fully improves the cleaning effect and efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0023] Figure 2 This is a rear view of the present invention;

[0024] Figure 3 This is a front view schematic diagram of the filter frame plate of the present invention;

[0025] Figure 4 This is a rear view of the filter frame plate of the present invention;

[0026] Figure 5 This is a cross-sectional schematic diagram of the lifting device of the present invention;

[0027] Figure 6 This is a schematic diagram of the filter frame plate of the present invention.

[0028] Figure 7 This is a schematic diagram of the flipping and cleaning of the filter frame plate of the present invention;

[0029] Figure 8 This is a cross-sectional schematic diagram of the transition tube of the present invention.

[0030] In the diagram: 1. Water tank inlet; 2. Guide sleeve plate; 3. Filter frame plate; 4. Positioning cone rod; 5. Support sleeve plate; 6. Straight tooth plate; 7. Gear; 8. Lifting device; 81. Composite housing; 82. Electro-hydraulic rod; 83. Transmission frame; 84. Radar level gauge; 9. First drive shaft; 10. Second drive shaft; 11. First synchronous belt; 12. Second synchronous belt; 13. Power unit; 131. Servo motor; 132. Bevel gearbox; 14. First filter screen; 15. Brush plate assembly; 151. Support plate; 152. Brush strip; 16. Second filter screen; 17. Collection cylinder; 18. Guide channel; 19. Water pump assembly; 20. Transition pipe; 21. Conduit; 22. Spray pipe. Detailed Implementation

[0031] 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.

[0032] This invention provides a technical solution:

[0033] like Figures 1-7 An automatic cleaning device for a cooling tower filter screen includes a water tank inlet 1, guide sleeves 2 are nested on both sides of the front end of the water tank inlet 1, and a filter frame plate 3 is slidably installed between the two guide sleeves 2, and a first filter screen 14 is nested in the rear end of the filter frame plate 3.

[0034] A support sleeve 5 is hinged to the top of the filter frame plate 3 via a pin. A lifting device 8 that can be driven to the top of the support sleeve 5 is installed at the front end of the water tank inlet 1. A gear 7 is connected to the end of the pin on the top of the filter frame plate 3. A straight tooth plate 6 is installed on the top of the guide sleeve 2. During the upward transmission of the filter frame plate 3 via the lifting device 8 and the support sleeve 5, the gear 7 meshes with the straight tooth plate 6, causing the filter frame plate 3 to rise first and then rotate until it is displaced to the water surface.

[0035] The lifting device 8 includes a composite housing 81, an electro-hydraulic rod 82, a transmission frame 83, and a radar level gauge 84. The rear end of the composite housing 81 is fixed to the top front end of the water tank inlet 1. The electro-hydraulic rod 82 and the radar level gauge 84 are respectively installed inside the middle and one side of the composite housing 81. The transmission frame 83 is located on the top outer side of the composite housing 81 and serves as the output structure of the lifting device 8, connecting to the output end of the electro-hydraulic rod 82. The bottom end of the transmission frame 83 is fixed to the top of the support sleeve 5, thereby utilizing the lifting device 8 as the power source for lifting. The source can then be used to reciprocate the transmission of the filter frame plate 3 and the structure associated with the filter frame plate 3 through the support sleeve plate 5 to meet the needs of automated operation. The detection end of the radar level gauge 84 extends to the bottom outside of the composite box 81, and the detection direction of the radar level gauge 84 is towards the bottom of the water tank inlet 1 and can perform non-contact measurement of the water level height. Thus, when the water level rises, it can be detected and fed back in time, thereby providing data support and triggering conditions for the subsequent periodic cleaning of the filter frame plate 3 and the first filter screen 14 inside the filter frame plate 3.

[0036] The water supply direction of the pool inlet 1 is from the front end of the filter frame plate 3 to the rear end of the filter frame plate 3. The bottom structure of the guide sleeve plate 2 is provided with a positioning groove that can be engaged and limited with the bottom structure of the filter frame plate 3. This initially improves the stability and reliability of the filter frame plate 3 and the structure associated with the filter frame plate 3 in the filtration operation. In addition, it also reduces the pressure of the lifting device 8 and the straight tooth plate 6 on the positioning load of the filter frame plate 3.

[0037] The filter frame plate 3 has a second drive shaft 10 mounted on both sides of its rear end via bearings, and a first drive shaft 9 mounted on the middle of the filter frame plate 3 via bearings. A first synchronous belt 11 is installed between one end of the first drive shaft 9 and one end of the adjacent second drive shaft 10. A brush plate assembly 15 is installed on the surface of the other end of the second drive shaft 10. A power unit 13 is installed at the top front end of the filter frame plate 3, and a second synchronous belt 12 is installed between the output structure of the power unit 13 and the first drive shaft 9. The first drive shaft 9 and the second drive shaft 10 rotate synchronously under the drive of the power unit 13 via the second synchronous belt 12, so that the brush plate assembly 15 reciprocates to clean and de-clogging the front surface of the first filter screen 14.

[0038] The brush plate assembly 15 includes a support plate 151. One end of the support plate 151 is fixed to the surface of the other end of the second drive shaft 10. Several brush strips 152 are installed on the support plate 151 in a transverse arrangement along its own structure. One end of the brush strips 152 is attached to the front end surface of the first filter screen 14. Thus, after the brush plate assembly 15 rotates synchronously with the second drive shaft 10, it can automatically clean the front end surface of the first filter screen 14, which plays a major role in filtration.

[0039] The power unit 13 includes a servo motor 131 and a bevel gearbox 132. The outer side of the housing of the servo motor 131 is fitted with a protective shell that is installed on the front surface of the filter frame plate 3. The bevel gearbox 132 is installed on the top of the filter frame plate 3, and the input end of the bevel gearbox 132 is connected to the output end of the servo motor 131. The second synchronous belt 12 is installed between the output end of the bevel gearbox 132 and one end of the first drive shaft 9. Using the kinetic energy provided by the power unit 13, the first drive shaft 9 and multiple second drive shafts 10 can be rotated synchronously under the step-by-step transmission of the second synchronous belt 12 and the first synchronous belt 11, thereby meeting the power requirements for subsequent cleaning of the surface of the first filter screen 14.

[0040] In use, after the water level detected by the radar level gauge 84 reaches the set critical value, the electric hydraulic rod 82 is activated. The output end of the electric hydraulic rod 82 drives the filter frame plate 3, gear 7 and related structures to rise automatically through the transmission frame 83 and the straight gear plate 6. During the rise, the gear 7 will reach a certain height and mesh with the straight gear plate 6 for transmission. During the further rise, the filter frame plate 3, the first filter screen 14 and related structures will be synchronously rotated and adjusted. After the rise is completed, the filter frame plate 3, the first filter screen 14 and related structures will rotate to the water surface.

[0041] Next, the servo motor 131 is started, and the output of the servo motor 131 synchronously drives the first drive shaft 9 through the bevel gear box 132 and the first synchronous belt 11. At the same time, the first drive shaft 9 synchronously drives multiple second drive shafts 10 through multiple first synchronous belts 11, which in turn drive their respective brush plate assemblies 15 to automatically clean the front surface of the first filter screen 14, ensuring the continuous and efficient filtration effect of the first filter screen 14. After cleaning, the electric hydraulic rod 82 is turned off, and the filter frame plate 3, the first filter screen 14 and related structures are automatically flipped, moved down and reset.

[0042] like Figures 1-2 A second filter screen 16 is fixedly sleeved inside the side wall at the front end of the filter frame plate 3. The mesh number of the second filter screen 16 is less than that of the first filter screen 14. The second filter screen 16 and the first filter screen 14 form a temporary storage space inside the filter frame plate 3. With the support of the filter frame plate 3, the second filter screen 16 can block and filter debris with weak adsorption force but large volume, reducing the filtration reduction and clogging probability of the first filter screen 14. The fine debris filtered out by the first filter screen 14 can be collected in the temporary storage space during subsequent cleaning, so as to facilitate subsequent cleaning and ensure the continuous use effect of the overall device.

[0043] When in use, considering the actual working environment, the second filter 16 is used as a pre-filtering structure to block and filter some large but weakly adsorbed debris, thereby reducing the workload of the subsequent continuous filtration by the first filter 14.

[0044] like Figures 1-2 Positioning cone rods 4 are fixed on both sides of the support sleeve plate 5. Positioning holes are opened on both sides of the top of the water tank inlet 1. As the support sleeve plate 5 rises and falls, the positioning cone rods 4 can be reciprocated to fit or separate from the corresponding positioning holes. The snap-fit ​​limit between the positioning cone rods 4 and the positioning holes is an extension of the snap-fit ​​limit between the guide sleeve plate 2 and the filter frame plate 3, further improving the compressive strength of the filter frame plate 3 and the structure associated with the filter frame plate 3 during continuous filtration.

[0045] When in use, considering the impact pressure during the water circulation process, the guide sleeve 2 is used as a limiting structure to limit and protect the filter frame plate 3 during use, thereby improving the compressive strength and structural strength of the filter frame plate 3 and related structures during filtration.

[0046] like Figures 1-8The front end of the filter frame plate 3 is provided with a guide groove 18. The interior of the second drive shaft 10 is set as a semi-open hollow structure, and a transition pipe is provided between the guide groove 18 and the second drive shaft 10. A conduit 21 communicating with its own space is fixed on the surface of one end of the second drive shaft 10. Several nozzles 22 communicating with their own space are arranged in the transverse direction of the conduit 21. Thus, the guide groove 18, the hollow structure of the second drive shaft 10, the conduit 21 and the multiple nozzles 22 form a reverse flushing structure for the first filter screen 14. In subsequent operations, the second drive shaft 10 can drive the water-spraying conduit 21 and multiple nozzles 22 to spray water from the rear end of the first filter screen 14 without interfering with the rotation of the second drive shaft 10, thereby further expanding the technical means of cleaning the first filter screen 14.

[0047] The transition pipe includes a transition pipe 20 and a sealing ring. One end of the transition pipe 20 is fixedly sleeved in the front end structure of the filter frame plate 3 and communicates with the space of the guide groove 18. The other end of the transition pipe 20 is fitted in the open port of the second drive shaft 10, and the sealing ring is nested in the fitting of the transition pipe 20 and the second drive shaft 10 to seal. Thus, without interfering with the rotation of the second drive shaft 10, the transition pipe 20 can continuously supply water to the second drive shaft 10.

[0048] On the other side of the composite housing 81, a water pump assembly 19 is installed. The output and input ends of the water pump assembly 19 are connected to an elastic spiral tube and a diversion tube, respectively. One end of the elastic spiral tube is installed inside the front end of the filter frame plate 3 and communicates with the space of the guide channel 18. One end of the diversion tube passes through the composite housing 81 and extends to the bottom of the water tank inlet 1. This satisfies the continuous water supply effect of the water pump assembly 19 to the guide channel 18 without interfering with the rotation adjustment of the filter frame plate 3, thereby meeting the subsequent automatic flushing operation requirements. Threaded holes are opened on both sides of the bottom of the filter frame plate 3. A collection cylinder 17 is threadedly connected inside the threaded holes. Both ends of the collection cylinder 17 are open structures, and a protective filter screen is fixedly nested inside one end of the collection cylinder 17. The collection cylinder 17 can provide a collection space for the debris cleaned out in the temporary storage space.

[0049] During use, considering the improvement of cleaning effect and efficiency, the water pump assembly 19 is started simultaneously during the tilting and cleaning process of the filter frame plate 3, the first filter screen 14 and related structures. The water pump assembly 19 draws water from the water tank inlet 1 through the diversion pipe and is guided to the inside of the guide channel 18 through the elastic spiral tube. Then, it is diverted to the inside of multiple transition pipes 20 through the guide channel 18, and then enters the corresponding second drive shaft 10 through the transition pipe 20. Finally, it enters the conduit 21 through the second drive shaft 10 and is sprayed onto the rear surface of the first filter screen 14 through multiple spray pipes 22 to backwash the first filter screen 14, further improving the cleaning and anti-clogging effect of the first filter screen 14. The cleaned impurities will enter the bottom of the filter frame plate 3 with the water flow, and then be filtered through the collection cylinder 17. The water is discharged through the collection cylinder 17, while the impurities remain inside the collection cylinder 17. After a cleaning cycle, the collection cylinder 17 is screwed on for cleaning. After completion, the collection cylinder 17 is reset and installed.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] 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 cooling tower screen automatic cleaning device, comprising a water pool inlet (1), both sides of the front end of the water pool inlet (1) are embedded with guide sleeve plates (2), characterized in that: A filter frame plate (3) is slidably installed between the two guide sleeve plates (2). A first filter screen (14) is nested inside the rear end of the filter frame plate (3). A support sleeve plate (5) is hinged to the top of the filter frame plate (3) by a pin. A lifting device (8) capable of driving with the top of the support sleeve plate (5) is installed at the front end of the pool inlet (1). A gear (7) is connected to the end of the pin in the top of the filter frame plate (3). A straight tooth plate (6) is installed on the top of the guide sleeve plate (2). During the upward transmission of the filter frame plate (3) by the lifting device (8) through the support sleeve plate (5), the gear (7) meshes with the straight tooth plate (6) to drive the filter frame plate (3) to rise first and then rotate until it is displaced to the water surface to make room. The filter frame plate (3) is fitted with a first drive shaft (9) and several second drive shafts (10). A first synchronous belt (11) is installed between one end of the first drive shaft (9) and one end of the adjacent second drive shaft (10). A brush plate assembly (15) is installed on the surface of the other end of the second drive shaft (10). A power device (13) is installed at the top front end of the filter frame plate (3), and a second synchronous belt (12) is installed between the output structure of the power device (13) and the first drive shaft (9).

2. The device for automatically cleaning the filter screen of a cooling tower according to claim 1, characterized in that: The lifting device (8) includes a composite housing (81), an electric hydraulic rod (82), a transmission frame (83), and a radar level gauge (84). The rear end of the composite housing (81) is fixed to the top front end of the water tank inlet (1). The electric hydraulic rod (82) and the radar level gauge (84) are respectively installed in the middle and one side of the composite housing (81). The transmission frame (83) is located on the top outside of the composite housing (81) and serves as the output structure of the lifting device (8) to be connected to the output end of the electric hydraulic rod (82). The bottom end of the transmission frame (83) is fixed to the top of the support sleeve (5).

3. The device for automatically cleaning the filter screen of a cooling tower according to claim 1, characterized in that: The power unit (13) includes a servo motor (131) and a bevel gearbox (132). The outer side of the housing of the servo motor (131) is fitted with a protective shell installed on the front surface of the filter frame plate (3). The bevel gearbox (132) is installed on the top of the filter frame plate (3). The input end of the bevel gearbox (132) is connected to the output end of the servo motor (131) for transmission. The second synchronous belt (12) is installed between the output end of the bevel gearbox (132) and one end of the first transmission shaft (9).

4. The device for automatically cleaning the filter screen of a cooling tower according to claim 1, characterized in that: The brush plate assembly (15) includes a support plate (151), one end of which is fixed to the surface of the other end of the second drive shaft (10), and a number of brush strips (152) are installed on the support plate (151) along the transverse arrangement of its own structure. One end of the brush strips (152) is attached to the front end surface of the first filter screen (14).

5. The device for automatic cleaning of cooling tower screen according to claim 1, characterized in that: The water supply direction of the pool inlet (1) is from the front end of the filter frame plate (3) to the rear end of the filter frame plate (3). The bottom structure of the guide sleeve plate (2) is provided with a positioning groove that can be engaged and limited with the bottom structure of the filter frame plate (3).

6. The device for automatic cleaning of cooling tower screen according to claim 1, characterized in that: A second filter screen (16) is fixedly sleeved inside the side wall at the front end of the filter frame plate (3), and the mesh number in the second filter screen (16) is less than the mesh number in the first filter screen (14). The second filter screen (16) and the first filter screen (14) form a temporary storage space inside the filter frame plate (3).

7. The device for automatic cleaning of cooling tower filter screen according to claim 1, characterized in that: The front end of the filter frame plate (3) is provided with a guide groove (18). The interior of the second drive shaft (10) is set as a semi-open hollow structure. A transition pipe is provided between the guide groove (18) and the second drive shaft (10). A conduit (21) communicating with its own space is fixed on the surface of one end of the second drive shaft (10). Several nozzles (22) communicating with their own space are arranged in the conduit (21) along the transverse arrangement of its own structure.

8. The automatic cleaning device for cooling tower filter screen according to claim 7, characterized in that: The transition pipe includes a transition pipe (20) and a sealing ring. One end of the transition pipe (20) is fixedly sleeved in the front end structure of the filter frame plate (3) and communicates with the space of the guide groove (18). The other end of the transition pipe (20) is sleeved in the open port of the second drive shaft (10), and the sealing ring is nested in the sleeve of the transition pipe (20) and the second drive shaft (10) for sealing.

9. The automatic cleaning device for cooling tower filter screen according to claim 7, characterized in that: The other side of the composite housing (81) is fitted with a water pump assembly (19). The output end and input end of the water pump assembly (19) are respectively connected to an elastic spiral tube and a diversion tube. One end of the elastic spiral tube is fitted inside the front end of the filter frame plate (3) and communicates with the space of the guide groove (18). One end of the diversion tube passes through the composite housing (81) and extends to the bottom of the water tank inlet (1).

10. The automatic cleaning device for cooling tower filter screen according to claim 1, characterized in that: The bottom of the filter frame plate (3) is provided with threaded holes on both sides, and a collection cylinder (17) is threadedly connected in the threaded holes. Both ends of the collection cylinder (17) are open structures, and a protective filter screen is fixedly nested in one end of the collection cylinder (17).

Images