Circulating water filtering device for thermal power plant

Abstract

The utility model relates to a circulating water filtering device for a thermal power plant, which comprises a first box body and a second box body, the first box body is provided with a circulating water inlet, the second box body is provided with a circulating water outlet, a filtering cavity is formed in the first box body, the circulating water inlet is communicated with the filtering cavity, and an adsorption cavity is formed in the second box body. The circulating water outlet is communicated with the adsorption cavity, the filtering cavity and the adsorption cavity can be communicated in an on-off mode, the circulating water inlet is used for being connected with a water outlet of a condenser of the thermal power plant, and the circulating water outlet is used for being connected with a water inlet of a cooling tower of the thermal power plant. The circulating water filtering device further comprises a filtering part and an adsorption part, the filtering part is arranged in the filtering cavity, the adsorption part is arranged in the adsorption cavity, the filtering part can divide the filtering cavity into a water injection cavity and a filtering cavity, and the filtering cavity and the adsorption cavity are communicated in an on-off mode. Circulating water can be filtered and adsorbed respectively, so that the water quality is improved. The mutually independent box bodies can ensure that filtration and adsorption are not mutually influenced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of circulating water filtration, and specifically, to a circulating water filtration device for a thermal power plant. Background Art

[0002] During the production process of a thermal power plant, a large amount of waste heat is generated and needs to be cooled in time by cooling water to ensure the normal operation of production equipment. During the circulation of circulating cooling water, due to factors such as water evaporation and wind blowing, it will be polluted, resulting in water quality deterioration. And the deterioration of water quality will cause equipment blockage, electrochemical corrosion and scaling, affecting the normal operation of equipment. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a circulating water filtration device for a thermal power plant to solve the above technical problems.

[0004] To achieve the above purpose, the present disclosure provides a circulating water filtration device for a thermal power plant, including a first box body and a second box body. A circulating water inlet is provided on the first box body, and a circulating water outlet is provided on the second box body. A filtration cavity is formed in the first box body, and the circulating water inlet is communicated with the filtration cavity. An adsorption cavity is formed in the second box body, and the circulating water outlet is communicated with the adsorption cavity. The filtration cavity and the adsorption cavity can be communicated and disconnected. The circulating water inlet is used to be connected to the water outlet of the condenser of the thermal power plant, and the circulating water outlet is used to be connected to the water inlet of the cooling tower of the thermal power plant.

[0005] The circulating water filtration device further includes a filter element and an adsorbent. The filter element is arranged in the filtration cavity, and the adsorbent is arranged in the adsorption cavity. The filter element can divide the filtration cavity into a water injection cavity and a filtration cavity, and the filtration cavity is communicated with the adsorption cavity in a way that can be connected and disconnected.

[0006] Optionally, the filter element is a filter cylinder formed by enclosing a first filter screen, and the filtration cavity is formed inside the filter cylinder.

[0007] Optionally, the circulating water filtration device further includes a cleaning assembly, and the cleaning assembly includes a cleaning ring and a driving member. The cleaning ring is sleeved on the outer peripheral surface of the filter cylinder, and the driving member is in transmission connection with the cleaning ring to drive the cleaning ring to move along the axial direction of the filter cylinder to clean the outer surface of the filter cylinder.

[0008] Optionally, the cleaning ring includes a body and a cleaning brush. One end of the cleaning brush is arranged on the inner peripheral surface of the body, and the other end of the cleaning brush is in contact with the outer peripheral surface of the filter cylinder.

[0009] Optionally, the driving member includes a first motor and a screw rod. A threaded hole is formed in the cleaning ring. One end of the screw rod passes through the threaded hole, and the screw rod and the cleaning ring form a lead screw-nut pair. The other end of the screw rod is drivingly connected to the output end of the first motor.

[0010] Optionally, the cleaning assembly further includes a cleaning nozzle. The water spraying port of the cleaning nozzle is located in the water injection cavity and is arranged towards the outer peripheral surface of the filter cartridge.

[0011] Optionally, the circulating water filtering device further includes an adsorption mechanism. The adsorption mechanism is arranged in the adsorption cavity.

[0012] The adsorption mechanism includes a rotating shaft and an adsorbent. The adsorbent is arranged on the rotating shaft, and the rotating shaft can drive the adsorbent to rotate around the rotation axis of the rotating shaft.

[0013] Optionally, the adsorbent includes a mounting frame and an adsorption net. One end of the mounting frame is connected to the outer peripheral surface of the rotating shaft. The plane where the mounting frame is located is perpendicular to the outer peripheral surface of the rotating shaft, and the adsorption net is located inside the mounting frame.

[0014] Optionally, the adsorbent further includes two second filter meshes. The second filter meshes are located inside the mounting frame. The adsorption net is located at the center of the mounting frame, and the two second filter meshes are respectively located on both sides of the adsorption net.

[0015] Optionally, the first box body is located above the second box body. A communicating pipe is further arranged between the first box body and the second box body. Two ends of the communicating pipe are respectively communicated with the filtering cavity and the adsorption cavity. A first switching valve is further arranged on the communicating pipe.

[0016] Through the above technical solutions, the circulating water can remove visible impurities and invisible particles in the water through the filtration of the filter element and the adsorption of the adsorbent, improve the water quality of the circulating water, and reduce the probability of equipment failure caused by the water quality problem of the circulating water. Moreover, since the circulating water filtering device in the present disclosure includes independent first and second box bodies, the filtering and adsorption processes can be carried out in different cavities, so as to ensure that the filtering and adsorption processes do not affect each other and improve the treatment effect of the circulating water filtering device.

[0017] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0019] Figure 1 It is a three-dimensional schematic diagram of a circulating water filtration device provided by an embodiment of the present disclosure;

[0020] Figure 2 It is a sectional schematic diagram of a circulating water filtration device provided by an embodiment of the present disclosure;

[0021] Figure 3 It is a sectional schematic diagram of the first box body of a circulating water filtration device provided by an embodiment of the present disclosure;

[0022] Figure 4 It is a sectional schematic diagram of the second box body of a circulating water filtration device provided by an embodiment of the present disclosure;

[0023] Figure 5 It is a top view schematic diagram of the cleaning ring of a circulating water filtration device provided by an embodiment of the present disclosure.

[0024] Explanation of reference numerals

[0025] 100 - Circulating water filtration device; 1 - First box body; 11 - Filtration cavity; 12 - Support column; 13 - Inlet pipe; 14 - Drain pipe; 2 - Second box body; 21 - Adsorption cavity; 22 - Outlet pipe; 23 - Chemical addition tank; 3 - Filter element; 31 - First filter screen; 5 - Cleaning assembly; 51 - Cleaning ring; 511 - Body; 512 - Cleaning brush; 513 - Threaded hole; 521 - First motor; 522 - Screw rod; 53 - Cleaning spray head; 6 - Adsorption mechanism; 61 - Rotating shaft; 62 - Adsorbing member; 621 - Mounting frame; 622 - Adsorption net; 623 - Second filter screen; 63 - Second motor; 7 - Connecting pipe; 71 - First switching valve; 8 - Second switching valve; 9 - Third switching valve. Detailed description of the specific implementation mode

[0026] The following will describe the specific implementation mode of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific implementation mode described here is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0027] In the present disclosure, unless otherwise stated, the orientation words such as "upper, lower" are usually defined in the state when the circulating water filtration device is working normally. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present disclosure. "Inside, outside" refer to the inside and outside of the contour of the corresponding component. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present disclosure, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "connected", "coupled", and "installed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0029] As Figures 1 to 5 shown, a circulating water filtration device 100 for a thermal power plant according to the present disclosure includes a first box body 1 and a second box body 2. A circulating water inlet is provided on the first box body 1, and a circulating water outlet is provided on the second box body 2. A filtration cavity 11 is formed in the first box body 1, and the circulating water inlet communicates with the filtration cavity 11. An adsorption cavity 21 is formed in the second box body 2, and the circulating water outlet communicates with the adsorption cavity 21. The filtration cavity 11 and the adsorption cavity 21 can be connected and disconnected. The circulating water inlet is used to connect to the water outlet of the condenser of the thermal power plant, and the circulating water outlet is used to connect to the water inlet of the cooling tower of the thermal power plant.

[0030] The circulating water filtration device 100 further includes a filter element 3 and an adsorbent 62. The filter element 3 is arranged in the filtration cavity 11, and the adsorbent 62 is arranged in the adsorption cavity 21. The filter element 3 can divide the filtration cavity 11 into a water injection cavity and a filtration cavity, and the filtration cavity is connected and disconnected with the adsorption cavity 21.

[0031] The circulating water flowing out of the condenser of the thermal power plant enters the filtration cavity 11 of the first box body 1 through the circulating water inlet. After being filtered by the filter element 3, it flows into the connected adsorption cavity 21. After the adsorbent 62 adsorbs the impurities in the water, it flows out through the circulating water outlet and enters the cooling tower of the thermal power plant for cooling.

[0032] Through the above technical solution, the circulating water can remove visible impurities and invisible particles in the water through the filtration of the filter element 3 and the adsorption of the adsorbent 62, improve the quality of the circulating water, and reduce the probability of equipment failure caused by the problem of circulating water quality. Moreover, since the circulating water filtration device 100 in the present disclosure includes the mutually independent first box body 1 and the second box body 2, the filtration and adsorption processes can be carried out in different cavities, so as to ensure that the filtration and adsorption processes do not affect each other and improve the treatment effect of the circulating water filtration device 100.

[0033] To improve the filtration efficiency, optionally, as Figure 2 and Figure 3As shown, the filter element 3 is a filter cylinder formed by enclosing a first filter screen 31, and a filter cavity is formed inside the filter cylinder. The filter cylinder formed by enclosing the first filter screen 31 can divide the filtering cavity 11 into a water injection cavity and a filter cavity. Since the surface of the cylindrical filter cylinder is relatively smooth, it is not easily worn due to the impact of the circulating water flow during the process of filtering the circulating water, which can further improve the service life of the filter element 3.

[0034] The present disclosure does not limit the specific shape of the filter element 3. For example, the cross-sectional shape of the filter element 3 can be rectangular or triangular.

[0035] To improve the filtering effect of the filter element 3, optionally, as Figure 2 and Figure 3 shown, the circulating water filtering device 100 further includes a cleaning component 5. The cleaning component 5 includes a cleaning ring 51 and a driving member. The cleaning ring 51 is sleeved on the outer peripheral surface of the filter cylinder, and the driving member is in transmission connection with the cleaning ring 51 to drive the cleaning ring 51 to move along the axial direction of the filter cylinder to clean the outer surface of the filter cylinder. The cleaning ring 51 sleeved on the outer peripheral surface of the filter cylinder can move along the axial direction of the filter cylinder under the drive of the driving member. Through the friction between the cleaning ring 51 and the outer peripheral surface of the filter cylinder, the impurities located on the outer surface of the filter cylinder can be removed, preventing the impurities from blocking the filter holes, thereby improving the filtering effect of the filter cylinder.

[0036] Optionally, as Figure 5 shown, the cleaning ring 51 can include a body 511 and a cleaning brush 512. One end of the cleaning brush 512 is arranged on the inner peripheral surface of the body 511, and the other end of the cleaning brush 512 contacts the outer peripheral surface of the filter cylinder. The body 511 of the cleaning ring 51 can move along the axis of the filter cylinder under the drive of the driving member, and the body 511 of the cleaning ring 51 drives the cleaning brush 512 to brush on the outer peripheral surface of the filter cylinder, thereby removing the impurities located on the outer peripheral surface of the filter cylinder.

[0037] In another embodiment provided by the present disclosure, the cleaning ring can include a body and a scraping plate. One end of the scraping plate is arranged on the inner peripheral surface of the body, and the other end of the scraping plate contacts the outer peripheral surface of the filter cylinder. The body of the cleaning ring can move along the axis of the filter cylinder under the drive of the driving member, and the body of the cleaning ring drives the scraping end of the scraping plate to move on the outer peripheral surface of the filter cylinder, thereby removing the impurities located on the outer peripheral surface of the filter cylinder.

[0038] Optionally, as Figure 2 and Figure 3As shown in the figure, the driving member includes a first motor 521 and a screw rod 522. A threaded hole 513 is formed on the cleaning ring 51. One end of the screw rod 522 passes through the threaded hole 513. The screw rod 522 and the cleaning ring 51 form a lead screw-nut pair. The other end of the screw rod 522 is drivingly connected to the output end of the first motor 521. The first motor 521 can drive the screw rod 522 to rotate. Since the screw rod 522 and the cleaning ring 51 form a lead screw-nut pair, the rotation of the screw rod 522 can drive the cleaning ring 51 to move along the axial direction of the screw rod 522. The axial directions of the screw rod 522 and the filter cartridge are parallel to each other, so that the cleaning ring 51 sleeved on the surface of the filter cartridge can move along the axial direction of the filter cartridge to clean the impurities on the surface of the filter cartridge.

[0039] Optionally, there may be two screw rods 522. The two screw rods 522 are respectively located on both sides of the filter cartridge. The cleaning ring 51 may include two threaded holes 513. The two screw rods 522 are respectively inserted into the corresponding threaded holes 513. One ends of the two screw rods 522 are both drivingly connected to the driving end of the first motor 521. The two screw rods 522 drive the cleaning ring 51 to move along the axial direction of the filter cartridge on both sides of the cleaning ring 51 respectively, which can further provide power for the movement of the cleaning ring 51 on both sides and prevent the cleaning ring 51 from skewing and jamming due to uneven force.

[0040] In another embodiment provided by the present disclosure, the driving member may further include a linear motor. One end of the push rod of the linear motor is connected to the motor body 511, and the other end of the push rod is drivingly connected to the cleaning ring 51.

[0041] The present disclosure does not limit the specific type of the driving member. For example, the driving member may also be one of a cylinder and an oil cylinder.

[0042] To improve the cleaning effect, optionally, as Figure 2 and Figure 3 shown, the cleaning assembly 5 further includes a cleaning spray head 53. The water spraying port of the cleaning spray head 53 is located in the water injection cavity and is arranged facing the outer peripheral surface of the filter cartridge. The brushing of the cleaning ring 51 can separate the impurities on the outer peripheral surface of the filter cartridge from the filter cartridge, but there are still impurities that cannot be completely removed by the cleaning ring 51. By flushing with the cleaning spray head 53, the impurities attached to the outer peripheral surface of the filter cartridge can be further flushed clean, thereby improving the cleaning effect.

[0043] Optionally, as Figure 1 and Figure 2As shown, a sewage discharge pipe 14 is further provided on the side surface of the first box body 1. One end of the sewage discharge pipe 14 is communicated with the filtering cavity 11, and a sewage discharge port is formed at the end of the sewage discharge pipe 14 away from the first box body 1. A second switching valve 8 is also provided at the sewage discharge port. The impurities filtered by the filter cartridge sink to the bottom of the first box body 1, and the sewage discharge pipe 14 can discharge the impurities deposited at the bottom of the box through the sewage discharge port, thereby preventing the accumulation of impurities in the first box body 1 and ensuring the normal filtration of the filter cartridge. The second switching valve 8 is in a closed state during the normal filtration of the first box body 1 to prevent the leakage of the circulating water.

[0044] Optionally, in order to further improve the filtration effect, as Figure 2 and Figure 4 shown, the circulating water filtration device 100 further includes an adsorption mechanism 6. The adsorption mechanism 6 is arranged in the adsorption cavity 21. The adsorption mechanism 6 includes a rotating shaft 61 and an adsorbent 62. The adsorbent 62 is arranged on the rotating shaft 61, and the rotating shaft 61 can drive the adsorbent 62 to rotate around the rotation axis of the rotating shaft 61. After the circulating water filtered by the filter cartridge flows into the adsorption cavity 21, as the rotating shaft 61 drives the adsorbent 62 to rotate, on the one hand, the adsorbent 62 can stir the circulating water to make the circulating water flow, which is convenient for the adsorbent 62 to perform adsorption; on the other hand, the adsorbent 62 rotates in the circulating water, and can adsorb as many impurities in the water as possible, thereby improving the filtration effect.

[0045] Optionally, as Figure 1 、 Figure 2 and Figure 4 shown, the adsorption mechanism 6 further includes a second motor 63. The second motor 63 is arranged outside the second box body 2, and one end of the rotating shaft 61 is in transmission connection with the output end of the second motor 63.

[0046] Optionally, as Figure 2 and Figure 4 shown, the adsorbent 62 includes a mounting frame 621 and an adsorption net 622. One end of the mounting frame 621 is connected to the outer peripheral surface of the rotating shaft 61, the plane where the mounting frame 621 is located is perpendicular to the outer peripheral surface of the rotating shaft 61, and the adsorption net 622 is located inside the mounting frame 621. The adsorption net 622 is arranged inside the mounting frame 621, and the mounting frame 621 is perpendicular to the outer peripheral surface of the rotating shaft 61, so that when the rotating shaft 61 rotates, the covered area can be larger, and thus more circulating water can be processed per unit time.

[0047] Optionally, in order to improve the filtration effect, as Figure 4As shown, the adsorbent 62 further includes two second filter screens 623. The second filter screens 623 are located within the mounting frame 621, and the adsorption screen 622 is located at the center of the mounting frame 621. The two second filter screens 623 are respectively located on both sides of the adsorption screen 622. When arranging the adsorption screen 622 within the mounting frame 621 and adding the second filter screens 623, it is possible to filter the circulating water once again while adsorbing impurities in the water, thereby further improving the quality of the circulating water. And the adsorption screen 622 being located at the center of the two second filter screens 623 can better fix the adsorption screen 622.

[0048] The present disclosure does not limit the specific material of the adsorption screen 622. For example, the adsorption screen 622 can be silicone or activated alumina. In an embodiment provided by the present disclosure, the adsorption screen 622 can be an activated carbon adsorption screen 622.

[0049] Optionally, the mesh diameter of the second filter screen 623 is smaller than the mesh diameter of the first filter screen 31, so as to be able to filter smaller impurities and further improve the filtering effect.

[0050] Optionally, as Figure 2 and Figure 4 shown, the second box body 2 further includes a chemical dosing tank 23. The chemical dosing tank 23 is communicated with the adsorption cavity 21. A purifying agent can be placed in the chemical dosing tank 23, and the purifying agent enters the adsorption cavity 21 through the communication part between the chemical dosing tank 23 and the second box body 2. As the rotating shaft 61 and the adsorbent 62 stir and blend the purifying agent and the circulating water, the circulating water can be purified faster, thereby meeting the requirements for secondary water purification.

[0051] Optionally, as Figure 1 shown, the first box body 1 is located above the second box body 2, and a connecting pipe 7 is further provided between the first box body 1 and the second box body 2. The two ends of the connecting pipe 7 are respectively communicated with the filtering cavity 11 and the adsorption cavity 21, and a first on-off valve 71 is further provided on the connecting pipe 7. By arranging the first box body 1 above the second box body 2, the water in the first box body 1 can directly enter the second box body 2 under the action of gravity, which can reduce the work done by the water pump and lower the energy consumption of the circulating water filtering device 100. The first on-off valve 71 can switch between connecting and disconnecting the filtering cavity 11 and the adsorption cavity 21. That is, when cleaning the impurity sediment in the filtering cavity 11, the first on-off valve 71 can be in the closed state to prevent impurities from entering the adsorption cavity 21 through the connecting pipe 7; or, when the circulating water is filtered in the first box body 1, the first on-off valve 71 can be in the closed state to ensure that the first box body 1 and the second box body 2 do not affect each other during the filtering process. After the filtering is completed, the first on-off valve 71 is then opened to ensure that the filtered circulating water passes through.

[0052] Optionally, as Figure 1As shown, at least four support columns 12 may be provided between the first box body 1 and the second box body 2. The four support columns 12 are respectively arranged at the four top corners of the first box body 1 and the second box body 2 to support the first box body 1 on the second box body 2 and improve the support strength.

[0053] Optionally, as Figure 2 shown, the circulating water filtration device 100 further includes an inlet pipe 13 and an outlet pipe 22. The inlet pipe 13 is arranged at the circulating water inlet of the first box body 1, and the outlet pipe 22 is arranged at the circulating water outlet of the second box body 2. A third on-off valve 9 is also arranged on the outlet pipe 22.

[0054] Here, it should be noted that the present disclosure does not limit the specific types of the first on-off valve 71, the second on-off valve 8, and the third on-off valve 9. For example, they can be mechanical valves or solenoid valves.

[0055] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0056] In addition, it should be noted that in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0057] In addition, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A circulating water filtration device for a thermal power plant, characterized in that, The invention comprises a first box body and a second box body, wherein a circulating water inlet is provided on the first box body, and a circulating water outlet is provided on the second box body, a filtering cavity is formed in the first box body, and the circulating water inlet is communicated with the filtering cavity, an adsorption cavity is formed in the second box body, and the circulating water outlet is communicated with the adsorption cavity, and the filtering cavity and the adsorption cavity can be connected and disconnected, the circulating water inlet is used to be connected to the water outlet of the condenser of the thermal power plant, and the circulating water outlet is used to be connected to the water inlet of the cooling tower of the thermal power plant, The circulating water filtering device also includes a filter element and an adsorption element. The filter element is arranged in the filtering cavity, and the adsorption element is arranged in the adsorption cavity. The filter element can separate the filtering cavity into a water injection cavity and a filtering cavity. The filtering cavity is connected to the adsorption cavity in an on-off manner.

2. The circulating water filtration device according to claim 1, wherein, The filter element is a filter cartridge formed by enclosing a first filter screen, and the filter cavity is formed in the filter cartridge.

3. The circulating water filtration device according to claim 2, characterized in that, The circulating water filtration device also includes a cleaning assembly, which includes a cleaning ring and a driving member. The cleaning ring is sleeved on the outer circumferential surface of the filter cartridge. The driving member is transmission-connected to the cleaning ring to drive the cleaning ring to move along the axial direction of the filter cartridge to clean the outer surface of the filter cartridge.

4. The circulating water filtration device according to claim 3, characterized in that, The cleaning ring comprises a body and a cleaning brush, one end of the cleaning brush is arranged on the inner peripheral surface of the body, and the other end of the cleaning brush contacts the outer peripheral surface of the filter cartridge.

5. The circulating water filtration device according to claim 3, characterized in that, The driving member includes a first motor and a screw rod. A threaded hole is formed on the cleaning ring. One end of the screw rod is inserted into the threaded hole. The screw rod and the cleaning ring form a screw nut pair. The other end of the screw rod is transmission-connected to the output end of the first motor.

6. The circulating water filtration device according to claim 3, characterized in that, The cleaning assembly also includes a cleaning nozzle, a water spray port of the cleaning nozzle is located in the water injection cavity and is arranged toward the outer peripheral surface of the filter cartridge.

7. The circulating water filtering device according to any one of claims 1-6, characterized in that, The circulating water filtering device further comprises an adsorption mechanism, which is arranged in the adsorption cavity. The adsorption mechanism comprises a rotating shaft and an adsorption member, wherein the adsorption member is arranged on the rotating shaft, and the rotating shaft can drive the adsorption member to rotate around the rotation axis of the rotating shaft.

8. The circulating water filtration device according to claim 7, characterized in that The adsorption member includes a mounting frame and an adsorption net, one end of the mounting frame is connected to the outer peripheral surface of the rotating shaft, the plane where the mounting frame is located is perpendicular to the outer peripheral surface of the rotating shaft, and the adsorption net is located in the mounting frame.

9. The circulating water filtering device according to claim 8, wherein The adsorption component further includes two second filter screens, the second filter screens are located in the installation frame, the adsorption net is located at the center of the installation frame, and the two second filter screens are respectively located on both sides of the adsorption net.

10. The circulating water filtration device according to any one of claims 1-6, characterized in that, The first box is located above the second box. A connecting pipe is provided between the first box and the second box. Both ends of the connecting pipe are respectively connected to the filter cavity and the adsorption cavity. A first switch valve is also provided on the connecting pipe.

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