Coal power plant wastewater filtering equipment and coal power plant wastewater treatment system

Abstract

The invention discloses coal power plant wastewater filtering equipment and a coal power plant wastewater treatment system. The coal power plant wastewater filtering equipment comprises an equipment body, a plurality of filtering pieces and a cleaning mechanism. A water inlet, a water outlet and a discharging opening are formed in the peripheral wall of the equipment body, and the multiple filtering pieces are arranged on the equipment body at intervals; the sweeping mechanism comprises a first driving part, a plurality of sweeping assemblies and a first clutch assembly, the multiple sweeping assemblies are sequentially connected and correspond to the multiple filtering parts one to one, the sweeping assemblies comprise first sweeping parts, and when the sweeping assemblies are driven by the first driving part, the first sweeping parts sweep sundries on the surfaces of the filtering parts to the discharging opening; the first clutch assembly is used for connecting or separating the two adjacent cleaning assemblies. Compared with the prior art, the coal power plant wastewater filtering equipment has the advantages that pulverized coal on the filtering part can be prevented from floating in the equipment body and adhering to the inner peripheral wall of the equipment body as much as possible, so that the number of times of cleaning the inner peripheral wall of the equipment body by workers can be reduced, and the use experience of the coal power plant wastewater filtering equipment can be improved.

Description

Technical Field

[0001] The present application relates to the field of filtering equipment, and in particular to a coal power plant wastewater filtering equipment, and a coal power plant wastewater treatment system having the coal power plant wastewater filtering equipment. Background Art

[0002] In the prior art, coal power plant wastewater filtering equipment is used to filter coal power plant wastewater, which contains coal slag and coal powder. A plurality of filter elements and a plurality of cleaning elements are arranged in the coal power plant wastewater filtering equipment. The plurality of filter elements are respectively used to filter the coal slag or coal powder, and the plurality of cleaning elements are used to clean the coal slag or coal powder on the filter elements. In the process of the cleaning element cleaning the coal slag, the cleaning element will stir the coal powder accumulated on the filter element, causing the coal powder to float in the coal power plant wastewater filtering equipment. The coal powder is easy to adhere to the coal power plant wastewater filtering equipment, which causes workers to frequently clean the coal power plant wastewater filtering equipment, reducing the user experience of the coal power plant wastewater filtering equipment. Summary of the invention

[0003] In order to reduce the number of times workers clean the wastewater filtration equipment of coal-fired power plants and improve the user experience of the wastewater filtration equipment of coal-fired power plants, the present application provides a wastewater filtration equipment of coal-fired power plants.

[0004] The present application further proposes a coal power plant wastewater treatment system.

[0005] The present application provides a coal-fired power plant wastewater filtration device that adopts the following technical solution: A coal power plant wastewater filtering device comprises: a device body, the device body defines a filtering space, the outer peripheral wall of the device body is provided with a water inlet, a water outlet and a discharge port which are all connected to the filtering space, along the height direction of the coal power plant wastewater filtering device, the water inlet is located above the water outlet, the discharge port is located between the water inlet and the water outlet, and at least two of the discharge ports are spaced apart along the height direction of the coal power plant wastewater filtering device.

[0006] A plurality of filter elements are provided with filter holes on the surface of the filter elements. The plurality of filter elements are arranged in the equipment body at intervals along the height direction of the coal power plant wastewater filtration equipment. Each of the filter elements is arranged between the water inlet and the water outlet and is arranged corresponding to at least one of the discharge ports and is located below the corresponding discharge port.

[0007] A cleaning mechanism, wherein the cleaning mechanism is arranged in the body of the equipment, the cleaning mechanism comprises a first driving member, a plurality of cleaning components and a first clutch component, the plurality of cleaning components are connected in sequence, and the plurality of cleaning components are arranged one by one with the plurality of filter elements, the cleaning component comprises a first cleaning member that abuts against the filter element, the first driving member is connected and cooperated with the cleaning component located at the end of the plurality of cleaning components, and when the cleaning component is driven by the first driving member, the first cleaning member moves along the surface of the filter element to clean the debris on the surface of the filter element to the discharge port.

[0008] The first clutch assembly is disposed between at least two adjacent cleaning assemblies, and the first clutch assembly is used to engage or separate the corresponding two cleaning assemblies so as to enable the corresponding two cleaning assemblies to rotate or remain stationary relative to each other.

[0009] By adopting the above technical solution, when only coal slag needs to be cleaned, the first clutch is used to separate the corresponding two cleaning components, thereby avoiding the rotation of the first cleaning member corresponding to the filter member for filtering coal powder. Compared with the prior art, it is possible to avoid the coal powder on the filter member floating in the equipment body and causing the coal powder to adhere to the inner wall of the equipment body, thereby reducing the number of times workers clean the inner wall of the equipment body and improving the user experience of the wastewater filtration equipment in coal power plants.

[0010] Preferably, the first clutch assembly includes a first clutch, a second clutch and a second driving member, the first clutch is connected and cooperated with one of the two adjacent cleaning assemblies, the second clutch is movably arranged on the other of the two adjacent cleaning assemblies, the cleaning assembly provided with the second clutch extends into the first clutch and is suitable for rotating relative to the first clutch, the second driving member is transmission-connected to the second clutch, and the second driving member is used to drive the second clutch to extend into or move out of the first clutch so that the first clutch is engaged or separated from the second clutch.

[0011] By adopting the above technical solution, the second clutch and the first clutch are engaged, and the cleaning component connected to the first clutch drives the cleaning component provided with the second clutch to rotate through the second clutch, thereby achieving the technical effect of synchronously rotating the first cleaning components in multiple cleaning components to clean the debris on multiple filter elements.

[0012] Preferably, the first clutch member defines a limiting channel, and the cleaning assembly provided with the second clutch member has a limiting protrusion, which extends along the circumferential direction of the corresponding cleaning assembly, and the limiting protrusion extends into the limiting channel and is suitable for moving along the limiting channel, so that the cleaning assembly provided with the second clutch member is suitable for rotating relative to the first clutch member.

[0013] By adopting the above technical solution, when the debris on the filter element corresponding to the cleaning component provided with the second clutch element does not need to be cleaned, such a setting can prevent the first clutch element from being driven to drive the cleaning component provided with the second clutch element to rotate, thereby preventing the first cleaning component of the cleaning component provided with the second clutch element from mistakenly cleaning the debris on the filter element.

[0014] Preferably, the first clutch member includes a clutch member body and a cover body, an end portion of the clutch member body is provided with a receiving groove, the bottom of the receiving groove is configured as a first friction surface, the second clutch member extends into the receiving groove, the end surface of the second clutch member opposite to the first friction surface is configured as a second friction surface, and the first friction surface and the second friction surface are stopped or separated to enable the first clutch member and the second clutch member to engage or separate; the cover body is provided to cover the open end of the receiving groove and is used to open or close the limiting channel.

[0015] By adopting the above technical solution, the upper end surface of the second clutch member abuts against the bottom wall of the receiving groove, so that the first clutch member and the second clutch member engage, thereby achieving the technical effect that the first clutch member drives the second clutch member to rotate. In addition, the upper end surface of the second clutch member is separated from the bottom wall of the receiving groove, so that the first clutch member and the second clutch member are separated, thereby achieving the technical effect that the first clutch member rotates relative to the second clutch member.

[0016] Preferably, the cleaning assembly also includes a connecting rod, the filter element has an avoidance hole for allowing the connecting rod to pass through, the first cleaning element is arranged on the outer peripheral wall of the connecting rod and extends along the radial direction of the connecting rod, and the end of the connecting rod has a mounting portion, and the mounting portion is used to connect and cooperate with the first driving member or the first clutch assembly, and the connecting rod rotates around the central axis of the connecting rod when driven.

[0017] By adopting the above technical solution, it is possible to achieve the technical effect that the first driving member drives the first cleaning member in the plurality of cleaning assemblies to rotate through the connecting rod and the first clutch assembly.

[0018] Preferably, the cleaning assembly also includes a second cleaning piece, which is arranged on the outer peripheral wall of the connecting rod, and the second cleaning piece includes a cleaning part and a connecting part, the cleaning part is abutted against the inner peripheral wall of the equipment body, the connecting part is connected between the connecting rod and the cleaning part, and the water inlet is suitable for being arranged opposite to the side wall of the cleaning part of at least one of the cleaning assemblies.

[0019] By adopting the above technical solution, the connecting rod drives the second cleaning piece to rotate around the central axis of the connecting rod, and the cleaning part of the second cleaning piece cleans the coal powder adhered to the inner wall of the equipment body, thereby reducing the number of times workers clean the inner wall of the equipment body, thereby improving the user experience of the coal-fired power plant wastewater filtration equipment.

[0020] Preferably, the filter element is configured as a conical element, and the filter element is tilted downward in a direction from the center of the filter element to the edge of the filter element.

[0021] By adopting the above technical solution, under the action of gravity, the debris on the filter slides along the surface of the filter element from the center of the filter element to the edge of the filter element, thereby reducing the difficulty of the first cleaning element to clean the debris on the filter element to the discharge port, thereby improving the cleaning efficiency of the first cleaning element.

[0022] Preferably, the coal power plant wastewater filtering equipment also includes: a plurality of position detection components, along the height direction of the coal power plant wastewater filtering equipment, the plurality of position detection components are all arranged on the equipment body and are arranged in sequence and spaced apart, the plurality of position detection components are respectively arranged in one-to-one correspondence with the plurality of filter elements, and the position detection components are used to detect the height of debris on the corresponding filter elements.

[0023] Multiple water level detection components are arranged on the equipment body and spaced apart in sequence along the height direction of the coal power plant wastewater filtering equipment. The multiple water level detection components are respectively arranged one by one corresponding to the multiple filtering elements. The water level detection components are used to detect the liquid level of the liquid in the equipment body.

[0024] A control valve is arranged at the water inlet.

[0025] A controller, the first driving member, the first clutch assembly, the plurality of position detecting members, the plurality of water level detecting members and the control valve are all communicatively connected to the controller, and the controller is used to control the start or stop of the first driving member according to the detection signal of the position detecting member and / or the detection signal of the water level detecting member, and to control the engagement or disengagement of the first clutch assembly according to the detection signal of the position detecting member and / or the detection signal of the water level detecting member, and to control the opening or closing of the control valve according to the detection signal of the position detecting member.

[0026] By adopting the above technical solution, by arranging multiple position detection members and multiple water level detection members in the equipment body, the controller drives the first driving member and / or the first clutch assembly to drive the first cleaning member corresponding to the filter element to rotate according to the detection signal of the position detection member and the detection signal of the water level detection member, so as to clean the debris on the filter element to the discharge port, thereby avoiding excessive accumulation of debris on the filter element and causing the filter element to be blocked by the debris, thereby improving the working reliability of the coal power plant wastewater filtration equipment.

[0027] Preferably, the coal power plant wastewater filtration equipment further includes: a plurality of drain valves, the drain valves being arranged at the discharge ports, and the plurality of drain valves being arranged in one-to-one correspondence with the plurality of discharge ports, respectively, and the drain valves being used to open or close the discharge ports.

[0028] By adopting the above technical solution, the worker opens the discharge port through the drain valve, and the first cleaning element cleans the debris on the filter element to the discharge port, thereby achieving the technical effect of discharging the debris on the filter element out of the equipment body through the discharge port.

[0029] The present application provides a coal-fired power plant wastewater treatment system that adopts the following technical solutions: A coal power plant wastewater treatment system comprises: a coal power plant wastewater filtering device, wherein the coal power plant wastewater filtering device is the above-mentioned coal power plant wastewater filtering device.

[0030] By adopting the above technical solution, when only coal slag needs to be cleaned, the first clutch is used to separate the corresponding two cleaning components, thereby avoiding the rotation of the first cleaning member corresponding to the filter member for filtering coal powder. Compared with the prior art, it is possible to avoid as much as possible the coal powder on the filter member floating in the equipment body and causing the coal powder to adhere to the inner circumferential wall of the equipment body, thereby reducing the number of times workers clean the inner circumferential wall of the equipment body and reducing the work intensity of workers.

[0031] In summary, the present application includes at least one of the following beneficial technical effects: 1. When only coal slag needs to be cleaned, the first clutch is used to separate the two corresponding cleaning components, thereby preventing the first cleaning member corresponding to the filter member for filtering coal powder from rotating. Compared with the prior art, the coal powder on the filter member can be prevented from floating in the equipment body and causing the coal powder to adhere to the inner circumferential wall of the equipment body, thereby reducing the number of times workers clean the inner circumferential wall of the equipment body, and improving the user experience of the wastewater filtering equipment of coal power plants; 2. The upper end surface of the second clutch member abuts against the bottom wall of the receiving groove, so that the first clutch member and the second clutch member engage, thereby achieving the technical effect that the first clutch member drives the second clutch member to rotate. In addition, the upper end surface of the second clutch member is separated from the bottom wall of the receiving groove, so that the first clutch member and the second clutch member are separated, thereby achieving the technical effect that the first clutch member rotates relative to the second clutch member; 3. The connecting rod drives the second cleaning piece to rotate around the central axis of the connecting rod, and the cleaning part of the second cleaning piece cleans the coal powder adhered to the inner wall of the equipment body, thereby reducing the number of times workers clean the inner wall of the equipment body, thereby improving the user experience of the coal-fired power plant wastewater filtration equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of a coal power plant wastewater filtration device according to an embodiment of the present application; Figure 2 is a cross-sectional view of a coal power plant wastewater filtration device according to an embodiment of the present application; Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle; Figure 4 is a schematic diagram of a first clutch member according to an embodiment of the present application; Figure 5 It is a cross-sectional view at another angle of the coal power plant wastewater filtration equipment described in an embodiment of the present application.

[0033] Description of reference numerals: 100. Wastewater filtration equipment for coal-fired power plants; 10. Equipment body; 101. Filtration space; 102. Water inlet; 103. Water outlet; 104. Discharge port; 20. filter element; 201. filter hole; 202. avoidance hole; 30. Cleaning mechanism; 301. First driving member; 302. Cleaning assembly; 3021. First cleaning member; 3022. Position-limiting protrusion; 3023. Connecting rod; 3024. Mounting portion; 3025. Second cleaning member; 3026. Cleaning portion; 3027. Connecting portion; 303. First clutch assembly; 3031. First clutch member; 3032. Second clutch member; 3033. Second driving member; 3034. Position-limiting channel; 3035. Clutch member body; 3036. Cover body; 3037. Accommodating groove; 3038. First friction surface; 3039. Second friction surface; 40. Position detection component; 50. Water level detection component; 60. Control valve; 70. Drain valve. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-Figure 5This application is described in further detail.

[0035] The embodiment of the present application discloses a coal power plant wastewater filtering device 100.

[0036] Reference Figure 1-Figure 3 According to the embodiment of the present application, the coal power plant wastewater filtering device 100 comprises: a device body 10, a plurality of filter elements 20 and a cleaning mechanism 30. The device body 10 defines a filtering space 101, and the peripheral wall of the device body 10 is provided with a water inlet 102, a water outlet 103 and a discharge port 104, all of which are connected to the filtering space 101. Along the height direction of the coal power plant wastewater filtering device 100, the height direction of the coal power plant wastewater filtering device 100 can refer to Figure 2 In the up and down direction, the water inlet 102 is located above the water outlet 103, the discharge port 104 is located between the water inlet 102 and the water outlet 103, and at least two discharge ports 104 are spaced apart along the height direction of the coal power plant wastewater filtering equipment 100.

[0037] The wastewater from the coal power plant contains coal slag and coal powder. The wastewater from the coal power plant flows into the equipment body 10 through the water inlet 102 , and the liquid in the wastewater filtration equipment 100 from the coal power plant flows into the wastewater purification equipment through the water outlet 103 .

[0038] Furthermore, filter holes 201 are provided on the surface of the filter element 20, and the filter element 20 is used for coal cinders and coal powder. Multiple filter elements 20 are arranged in the equipment body 10 at intervals along the height direction of the coal power plant wastewater filtration equipment 100. Each filter element 20 is arranged between the water inlet 102 and the water outlet 103 and is arranged corresponding to at least one discharge port 104 and is located below the corresponding discharge port 104. The accumulated debris above the filter element 20 is discharged from the equipment body 10 through the discharge port 104.

[0039] In some specific embodiments, the filter element 20 near the water inlet 102 can be used to filter coal slag, and the filter element 20 near the water inlet and outlet 103 can be used to filter coal powder. It should be noted that the volume of coal slag is larger than that of coal powder.

[0040] Specifically, different filter elements 20 are provided with filter holes 201 of different diameter sizes, and a single filter element 20 is only provided with filter holes 201 of one diameter size. The filter element 20 with a larger diameter of the filter hole 201 is used to filter coal slag, and the filter element 20 with a smaller diameter of the filter hole 201 is used to filter coal powder. From top to bottom along the height direction of the coal-fired power plant wastewater filtration equipment 100, the diameter size of the filter hole 201 of the filter element 20 gradually decreases. Such a setting can prevent the topmost filter element 20 among multiple filter elements 20 from being frequently blocked by coal powder, thereby reducing the number of times of cleaning debris on the filter element 20, and further improving the use experience of the coal-fired power plant wastewater filtration equipment 100.

[0041] Furthermore, there may be multiple filter elements 20 with the same filter hole 201 diameter size, and the multiple filter elements 20 with the same filter hole 201 diameter size are spaced apart along the height direction of the coal power plant wastewater filtration equipment 100. When the filter hole 201 of one of the multiple filter elements 20 with the same filter hole 201 diameter size is damaged, the filter element 20 located below the filter element 20 with the damaged filter hole 201 will intercept the coal slag or coal powder, thereby avoiding as much as possible the clogging of the filter element 20 with a smaller filter hole 201 diameter size by the coal slag or coal powder, thereby improving the working reliability of the coal power plant wastewater filtration equipment 100.

[0042] Furthermore, there may be multiple filter elements 20 with different filter hole 201 diameter sizes, and the filter elements 20 with different filter hole 201 diameter sizes are used to filter coal slag or coal powder of different volumes. In some specific embodiments, there are two filter elements 20 with different filter hole 201 diameter sizes. When two different volumes of coal slag flow into the coal power plant wastewater filtration equipment 100, the filter element 20 with larger filter hole 201 diameter size in the two filter elements 20 filters the larger volume of coal slag, and the filter element 20 with smaller filter hole 201 diameter size in the two filter elements 20 filters the smaller volume of coal slag. Such a setting can minimize the accumulation of large amounts of coal slag on a single filter element 20, can reduce the number of times the coal slag on the filter element 20 is cleaned, and can thereby improve the use experience of the coal power plant wastewater filtration equipment 100.

[0043] The cleaning mechanism 30 is arranged in the equipment body 10, and the cleaning mechanism 30 includes a first driving member 301, multiple cleaning components 302 and a first clutch component 303. The multiple cleaning components 302 are connected in sequence, and the multiple cleaning components 302 are arranged one by one with the multiple filter elements 20. The cleaning component 302 includes a first cleaning member 3021 that stops against the filter element 20, and the first driving member 301 is connected and cooperated with the cleaning component 302 located at the end of the multiple cleaning components 302.

[0044] In some specific embodiments, the first driving member 301 is disposed at the upper end of the equipment body 10, and the first driving member 301 is connected and cooperated with the cleaning component 302 located at the top among the multiple cleaning components 302. The first driving member 301 is used to drive the cleaning component 302 located at the top among the multiple cleaning components 302 to rotate. In other specific embodiments, the first driving member 301 can be a motor, but the present application is not limited to this. The first driving member 301 can also be a hydraulic motor.

[0045] Furthermore, when the cleaning component 302 is driven by the first driving member 301, the first cleaning member 3021 moves along the surface of the filter element 20 to clean the debris on the surface of the filter element 20 to the discharge port 104, thereby avoiding as much as possible the accumulation of debris on the upper surface of the filter element 20, avoiding the filter element 20 from being blocked, causing the liquid in the equipment body 10 to be difficult to pass through the filter element 20, and thus improving the working reliability of the coal power plant wastewater filtration equipment 100.

[0046] A first clutch assembly 303 is provided between at least two adjacent cleaning assemblies 302. The first clutch assembly 303 is used to engage or separate the corresponding two cleaning assemblies 302 so that the corresponding two cleaning assemblies 302 can rotate or remain stationary relative to each other. Specifically, when the first clutch assembly 303 engages the corresponding two cleaning assemblies 302, one of the two cleaning assemblies 302 is driven to drive the other cleaning assembly 302 to rotate through the first clutch assembly 303. When the first clutch assembly 303 separates the corresponding two cleaning assemblies 302, one of the two cleaning assemblies 302 is driven, and the driven cleaning assembly 302 rotates relative to the other cleaning assembly 302. That is, one of the two cleaning assemblies 302 rotates, and the other cleaning assembly 302 does not rotate.

[0047] In some specific embodiments, two cleaning components 302 are provided in the coal power plant wastewater filtering equipment 100, and from top to bottom along the height direction of the coal power plant wastewater filtering equipment 100, the two cleaning components 302 are respectively a first cleaning component 302 and a second cleaning component 302, the first cleaning component 302 is connected and cooperated with the first driving component 301, and the first clutch component 303 is arranged between the first cleaning component 302 and the second cleaning component 302, and two filter elements 20 are provided in the coal power plant wastewater filtering equipment 100, and from top to bottom along the height direction of the coal power plant wastewater filtering equipment 100, the two filter elements 20 are respectively a first filter element 20 and a second filter element 20, the first filter element 20 is used to filter coal slag, and the second filter element 20 is used to filter coal powder, and the first cleaning component 302 is arranged corresponding to the first filter element 20, and the second cleaning component 302 is arranged corresponding to the second filter element 20.

[0048] When the coal slag on the first filter element 20 needs to be cleaned to the discharge port 104, and the coal powder on the second filter element 20 does not need to be cleaned, the first clutch assembly 303 separates the first cleaning assembly 302 and the second cleaning assembly 302, and the first driving member 301 drives the first cleaning member 3021 in the first cleaning assembly 302 to rotate, and the first cleaning member 3021 cleans the coal slag on the first filter element 20 to the discharge port 104, and the first cleaning member 302 cannot drive the second cleaning member 302 to rotate, thereby preventing the first cleaning member 3021 in the second cleaning assembly 302 from cleaning the coal powder, and preventing the coal powder from floating in the equipment body 10 and causing the coal powder to adhere to the inner wall of the equipment body 10.

[0049] When both the coal slag and the coal powder need to be cleaned, the first clutch assembly 303 engages the first cleaning assembly 302 and the second cleaning assembly 302, the first driving member 301 drives the first cleaning assembly 302 to rotate, the first cleaning assembly 302 drives the second cleaning assembly 302 to rotate through the first clutch assembly 303, the first cleaning member 3021 in the first cleaning assembly 302 cleans the coal slag on the first filter element 20 to the discharge port 104, and the first cleaning member 3021 in the second cleaning assembly 302 cleans the coal powder on the second filter element 20 to the discharge port 104.

[0050] When only coal powder needs to be cleaned, the first clutch assembly 303 engages the first cleaning assembly 302 and the second cleaning assembly 302, the first driving member 301 drives the second cleaning assembly 302 to rotate through the first cleaning assembly 302 and the first clutch assembly 303, and the first cleaning member 3021 in the second cleaning assembly 302 cleans the coal powder on the second filter element 20 to the discharge port 104.

[0051] It should be noted that the worker can manually open or close the discharge port 104. When the coal slag or coal powder on the filter element 20 is cleaned to the discharge port 104, the worker opens the discharge port 104 corresponding to the filter element 20. When the coal slag or coal powder on the filter element 20 does not need to be cleaned to the discharge port 104, the worker closes the discharge port 104 corresponding to the filter element 20. In addition, when the first cleaning member 3021 cleans the debris on the filter element 20, the worker lowers the liquid level in the equipment body 10 to below the cleaned filter element 20.

[0052] Furthermore, there can be multiple first cleaning pieces 3021, and the multiple first cleaning pieces 3021 are spaced apart along the circumferential direction of the coal power plant wastewater filtering equipment 100. The multiple first cleaning pieces 3021 can simultaneously clean the debris on the filter element 20, thereby improving the cleaning efficiency of the cleaning component 302.

[0053] Furthermore, there can be multiple discharge ports 104, and the multiple discharge ports 104 are spaced apart along the circumferential direction of the coal power plant wastewater filtration equipment 100. That is to say, one filter element 20 can be arranged corresponding to multiple discharge ports 104. The first cleaning component 3021 cleans the debris on the filter element 20 to the multiple discharge ports 104, so that the debris on the filter element 20 is simultaneously discharged from the equipment body 10 from the multiple discharge ports 104, thereby further improving the cleaning efficiency of the cleaning component 302.

[0054] Therefore, when only coal slag needs to be cleaned, the corresponding two cleaning components 302 are separated by utilizing the first clutch 3031, thereby avoiding the rotation of the first cleaning component 3021 corresponding to the filter element 20 for filtering coal powder. Compared with the prior art, it is possible to avoid the coal powder on the filter element 20 floating in the equipment body 10 and causing the coal powder to adhere to the inner wall of the equipment body 10, thereby reducing the number of times workers clean the inner wall of the equipment body 10 and improving the user experience of the coal power plant wastewater filtration equipment 100.

[0055] Reference Figure 2 and Figure 3 In some embodiments of the present application, the first clutch assembly 303 includes a first clutch 3031, a second clutch 3032 and a second driving member 3033. The first clutch 3031 is connected and cooperated with one of the two adjacent cleaning assemblies 302, and the second clutch 3032 is movably arranged on the other of the two adjacent cleaning assemblies 302. In some specific embodiments, along the height direction of the coal power plant wastewater filtration equipment 100, the upper end of the first clutch 3031 is connected and cooperated with the cleaning assembly 302 located above the first clutch 3031, and the second clutch 3032 is movably arranged on the cleaning assembly 302 located below the first clutch 3031.

[0056] In addition, the upper end of the cleaning component 302 provided with the second clutch 3032 extends into the first clutch 3031 and is suitable for rotating relative to the first clutch 3031. When the cleaning component 302 connected to the first clutch 3031 drives the first clutch 3031 to rotate, the first clutch 3031 and the cleaning component 302 provided with the second clutch 3032 rotate relative to each other, thereby preventing the first clutch 3031 from driving the cleaning component 302 provided with the second clutch 3032 to rotate.

[0057] Furthermore, the second driving member 3033 can be arranged on the first clutch member 3031, and the second driving member 3033 is transmission-connected with the second clutch member 3032. The second driving member 3033 is used to drive the second clutch member 3032 to extend into or move out of the first clutch member 3031 so that the first clutch member 3031 and the second clutch member 3032 are engaged or separated. In some specific embodiments, the second driving member 3033 can be an electromagnet. It should be noted that the second clutch member 3032 is made of magnetic material.

[0058] When the second driving member 3033 drives the second clutch member 3032 to extend into the first clutch member 3031, the second clutch member 3032 and the first clutch member 3031 engage, and the cleaning component 302 connected to the first clutch member 3031 drives the cleaning component 302 provided with the second clutch member 3032 to rotate through the second clutch member 3032, thereby achieving the technical effect of synchronously rotating the first cleaning members 3021 in the multiple cleaning components 302 to clean the debris on the multiple filter elements 20.

[0059] When the second driving member 3033 drives the second clutch member 3032 to move out of the first clutch member 3031, the second clutch member 3032 and the first clutch member 3031 are separated, and the cleaning component 302 connected to the first clutch member 3031 cannot be driven by the second clutch member 3032 to rotate, thereby achieving the technical effect of cleaning debris on a single filter element 20.

[0060] Reference Figure 2-Figure 4 In some embodiments of the present application, the first clutch 3031 defines a limiting channel 3034, and the cleaning component 302 provided with the second clutch 3032 has a limiting protrusion 3022, and the limiting protrusion 3022 is extended along the circumferential direction of the corresponding cleaning component 302. Specifically, along the height direction of the coal-fired power plant wastewater filtration equipment 100, the limiting channel 3034 is located at the lower end of the first clutch 3031, and the limiting protrusion 3022 extends into the limiting channel 3034 and is suitable for moving along the limiting channel 3034, so that the cleaning component 302 provided with the second clutch 3032 is suitable for rotating relative to the first clutch 3031.

[0061] When the debris on the filter element 20 corresponding to the cleaning component 302 provided with the second clutch component 3032 does not need to be cleaned, such a configuration can prevent the first clutch component 3031 from being driven to drive the cleaning component 302 provided with the second clutch component 3032 to rotate, thereby preventing the first cleaning component 3021 of the cleaning component 302 provided with the second clutch component 3032 from mistakenly cleaning the debris on the filter element 20.

[0062] Reference Figure 2-Figure 4In some embodiments of the present application, the first clutch 3031 includes a clutch body 3035 and a cover body 3036. Along the height direction of the coal-fired power plant wastewater filtration equipment 100, a receiving groove 3037 is provided at the lower end of the clutch body 3035. The bottom of the receiving groove 3037 is configured as a first friction surface 3038. The second clutch 3032 extends into the receiving groove 3037. The end surface of the second clutch 3032 opposite to the first friction surface 3038 is configured as a second friction surface 3039. Specifically, the upper end surface of the second clutch 3032 is configured as the second friction surface 3039.

[0063] The first friction surface 3038 and the second friction surface 3039 are stopped or separated to enable the first clutch 3031 and the second clutch 3032 to engage or disengage. Specifically, when the second driving member 3033 drives the second clutch 3032 to move close to the bottom wall of the accommodating groove 3037, the upper end surface of the second clutch 3032 is stopped against the bottom wall of the accommodating groove 3037 to enable the first clutch 3031 and the second clutch 3032 to engage, thereby achieving the technical effect that the first clutch 3031 drives the second clutch 3032 to rotate.

[0064] When the second driving member 3033 drives the second clutch member 3032 to move away from the bottom wall of the accommodating groove 3037, the upper end surface of the second clutch member 3032 is separated from the bottom wall of the accommodating groove 3037, so that the first clutch member 3031 and the second clutch member 3032 are separated, thereby achieving the technical effect of the first clutch member 3031 rotating relative to the second clutch member 3032.

[0065] In addition, the cover body 3036 is covered on the open end of the accommodating groove 3037 and is used to open or close the limiting channel 3034. When the cleaning component 302 extends into the limiting channel 3034, the cover body 3036 can prevent the cleaning component 302 from escaping from the limiting channel 3034 as much as possible, thereby preventing the second clutch member 3032 from being unable to extend into the accommodating groove 3037, thereby improving the working reliability of the wastewater filtration equipment 100 of the coal-fired power plant.

[0066] Reference Figure 2 and Figure 3In some embodiments of the present application, the cleaning assembly 302 further includes a connecting rod 3023, and a limiting protrusion 3022 is provided on the outer peripheral wall of the connecting rod 3023. The filter element 20 has an avoidance hole 202 for the connecting rod 3023 to pass through. In some specific embodiments, there are three cleaning assemblies 302 and three filter elements 20. From top to bottom along the height direction of the coal power plant wastewater filtering equipment 100, the cleaning assemblies 302 are respectively the first cleaning assembly 302, the second cleaning assembly 302 and the third cleaning assembly 302, and the filter elements 20 are respectively the first filter element 20, the second filter element 20 and the third filter element 20. 0, the first cleaning component 302 and the first filter element 20 are correspondingly arranged, the second cleaning component 302 and the second filter element 20 are correspondingly arranged, the third cleaning component 302 and the third filter element 20 are correspondingly arranged, the connecting rod 3023 of the first cleaning component 302 passes through the avoidance hole 202 of the first filter element 20 and is connected and matched with the connecting rod 3023 of the second cleaning component 302 through the first clutch component 303, the connecting rod 3023 of the second cleaning component 302 passes through the avoidance hole 202 of the second filter element 20 and is connected and matched with the connecting rod 3023 of the third cleaning component 302 through the first clutch component 303.

[0067] The first cleaning member 3021 is arranged on the outer peripheral wall of the connecting rod 3023 and extends along the radial direction of the connecting rod 3023. The end of the connecting rod 3023 has a mounting portion 3024, and the mounting portion 3024 is used to connect and cooperate with the first driving member 301 or the first clutch assembly 303. When the connecting rod 3023 is driven, it rotates around the central axis of the connecting rod 3023, and the connecting rod 3023 drives the first cleaning member 3021 to rotate around the central axis of the connecting rod 3023.

[0068] Specifically, the upper end of the connecting rod 3023 of the first cleaning component 302 is connected and cooperated with the first driving member 301, the lower end of the connecting rod 3023 of the first cleaning component 302 is connected and cooperated with the first clutch member 3031, the upper end of the connecting rod 3023 of the second cleaning component 302 is connected and cooperated with the second clutch member 3032, the lower end of the connecting rod 3023 of the second cleaning component 302 is connected and cooperated with the first clutch member 3031, and the upper end of the connecting rod 3023 of the third cleaning component 302 is connected and cooperated with the second clutch member 3032, so that the technical effect of the first driving member 301 driving the first cleaning member 3021 in multiple cleaning components 302 to rotate through the connecting rod 3023 and the first clutch component 303 can be achieved.

[0069] Furthermore, the connecting rod 3023 is provided with a direction groove, and the lower end portion of the second clutch 3032 is constructed in a square shape, the lower end portion of the second clutch 3032 is inserted into the direction groove, and the first clutch 3031 drives the connecting rod 3023 connected and matched with the second clutch 3032 to rotate around the central axis of the connecting rod 3023 through the second clutch 3032.

[0070] Reference Figure 2 and Figure 3 In some embodiments of the present application, the cleaning component 302 may further include a second cleaning piece 3025, which is arranged on the outer peripheral wall of the connecting rod 3023. Along the height direction of the coal-fired power plant wastewater filtration equipment 100, the first cleaning piece 3021 and the second cleaning piece 3025 are arranged separately, and the second cleaning piece 3025 is located above the first cleaning piece 3021. Such an arrangement can avoid the interference between the first cleaning piece 3021 and the second cleaning piece 3025, which may cause damage to the first cleaning piece 3021 and / or the second cleaning piece 3025, thereby improving the working reliability of the coal-fired power plant wastewater filtration equipment 100.

[0071] In addition, the second cleaning member 3025 includes a cleaning portion 3026 and a connecting portion 3027. The cleaning portion 3026 is abutted against the inner circumferential wall of the equipment body 10. The connecting portion 3027 is connected between the connecting rod 3023 and the cleaning portion 3026. The connecting rod 3023 drives the second cleaning member 3025 to rotate around the central axis of the connecting rod 3023. The cleaning portion 3026 of the second cleaning member 3025 cleans the coal powder adhered to the inner circumferential wall of the equipment body 10, thereby reducing the number of times workers clean the inner circumferential wall of the equipment body 10, thereby improving the user experience of the coal power plant wastewater filtration equipment 100.

[0072] Furthermore, there are multiple second cleaning pieces 3025, and the multiple second cleaning pieces 3025 are spaced apart along the circumferential direction of the coal power plant wastewater filtration equipment 100. The multiple second cleaning pieces 3025 can clean the inner circumferential wall of the equipment body 10 at the same time, thereby improving the cleaning efficiency of the second cleaning pieces 3025 in cleaning the inner circumferential wall of the equipment body 10.

[0073] Further, refer to Figure 5 The water inlet 102 is suitable for being arranged opposite to the side wall of the cleaning portion 3026 of at least one cleaning component 302. The coal power plant wastewater at the water inlet 102 hits the side wall of the second cleaning member 3025, thereby driving the second cleaning member 3025 to rotate around the central axis of the connecting rod 3023, and the second cleaning member 3025 drives the first cleaning member 3021 to rotate through the connecting rod 3023. Such an arrangement can reduce the energy usage of the coal power plant wastewater filtration equipment 100, thereby improving the environmental protection of the coal power plant wastewater filtration equipment 100.

[0074] Reference Figure 2 In some embodiments of the present application, the filter element 20 is constructed as a conical element, and the filter element 20 is tilted downward in the direction from the center of the filter element 20 to the edge of the filter element 20, and the first cleaning element 3021 is also constructed as a cone, and the first cleaning element 3021 is tilted downward from the end of the first cleaning element 3021 close to the connecting rod 3023 to the end of the first cleaning element 3021 away from the connecting rod 3023, and the discharge port 104 is located at the edge of the filter element 20.

[0075] When the first cleaning piece 3021 cleans the debris on the filter element 20, under the action of gravity, the debris on the filter slides along the surface of the filter element 20 from the center of the filter element 20 to the edge of the filter element 20, thereby reducing the difficulty of the first cleaning piece 3021 to clean the debris on the filter element 20 to the discharge port 104, thereby improving the cleaning efficiency of the first cleaning piece 3021.

[0076] Reference Figure 1 and Figure 2 In some embodiments of the present application, the coal power plant wastewater filtration equipment 100 may also include: a plurality of position detection components 40, a plurality of water level detection components 50, a control valve 60 and a controller.

[0077] The control valve 60 is disposed at the water inlet 102, and the control valve 60 is used to open or close the water inlet 102. Along the height direction of the coal power plant wastewater filtering device 100, a plurality of position detection members 40 are disposed on the device body 10 and are sequentially spaced apart, and the plurality of position detection members 40 are respectively disposed in one-to-one correspondence with the plurality of filter members 20, and the position detection members 40 are used to detect the height of debris on the corresponding filter members 20, and in some specific embodiments, the position detection members 40 may be position sensors.

[0078] Specifically, multiple position detection components 40 are arranged on the inner wall of the equipment body 10 and are located above the filter element 20, and multiple position detection components 40 are spaced apart from the first cleaning component 3021 and the second cleaning component 3025, so as to avoid the position detection component 40 being accidentally triggered by the first cleaning component 3021 and the second cleaning component 3025.

[0079] Along the height direction of the coal power plant wastewater filtration equipment 100, multiple water level detection components 50 are arranged on the equipment body 10 and are spaced apart in sequence. The multiple water level detection components 50 are respectively arranged one by one corresponding to the multiple filter elements 20. The water level detection components 50 are used to detect the liquid level of the liquid in the equipment body 10. In some specific embodiments, the water level detection components 50 can be electrode-type water level sensors.

[0080] Specifically, multiple water level detection components 50 are all arranged on the inner wall of the equipment body 10, and multiple water level detection components 50 are spaced apart from the first cleaning component 3021 and the second cleaning component 3025, so as to avoid the water level detection components 50 from being damaged by the first cleaning component 3021 and the second cleaning component 3025, thereby improving the working reliability of the coal power plant wastewater filtration equipment 100, and multiple water level detection components 50 and multiple position detection components 40 are arranged in a one-to-one correspondence.

[0081] The first driving member 301, the first clutch assembly 303, multiple position detection members 40, multiple water level detection members 50 and the control valve 60 are all communicatively connected to the controller, and the controller is used to control the start or stop of the first driving member 301 according to the detection signal of the position detection member 40 and / or the detection signal of the water level detection member 50, and to control the engagement or disengagement of the first clutch assembly 303 according to the detection signal of the position detection member 40 and / or the detection signal of the water level detection member 50, and to control the opening or closing of the control valve 60 according to the detection signal of the position detection member 40.

[0082] When the height of the debris on the filter element 20 is equal to the spacing distance between the position detection element 40 and the filter element 20, the position detection element 40 sends a detection signal to the controller; when the spacing distance between the liquid surface in the equipment body 10 and the water outlet 103 is less than the spacing distance between the water level detection element 50 corresponding to the position detection element 40 and the water outlet 103, the water level detection element 50 sends a detection signal to the controller.

[0083] In some specific embodiments, there are two cleaning components 302, filter elements 20, position detection components 40 and water level detection components. From top to bottom along the height direction of the coal power plant wastewater filtration equipment 100, the cleaning components 302 are respectively the first cleaning components 302 and the second cleaning components 302, the filter elements 20 are respectively the first filter elements 20 and the second filter elements 20, the position detection components 40 are respectively the first position detection components 40 and the second position detection components 40, and the water level detection components 50 are respectively the first water level detection components 50 and the second water level detection components 50. The first cleaning component 302, the first filter element 20, the first position detection component 40 and the first water level detection component 50 are correspondingly arranged, and the second cleaning component 302, the second filter element 20, the second position detection component 40 and the second water level detection component 50 are correspondingly arranged.

[0084] When the first position detection component 40 is triggered and the second position detection component 40 is not triggered, the first position detection component 40 sends a detection signal to the controller, and the controller controls the control valve 60 to close the water inlet 102 according to the detection signal of the first position detection component 40, and the liquid in the equipment body 10 flows out of the equipment body 10 from the water outlet 103, and the liquid level of the liquid in the equipment body 10 gradually decreases. When the first water level detection is triggered, the first water level detection component 50 sends a detection signal to the controller, and the controller controls the first driving component 301 to start working according to the detection signal of the first position detection component 40 and the detection signal of the first water level detection, and controls the first clutch assembly 303 to separate the first cleaning assembly 302 and the second cleaning assembly 302, and the first driving component 301 drives the connecting rod 3023 in the first cleaning assembly 302 to drive the first cleaning component 3021 in the first cleaning assembly 302 to rotate, so as to clean the debris on the first filter element 20 to the discharge port 104.

[0085] When the first position detection member 40 and the second position detection member 40 are both triggered, the first position detection member 40 and the second position detection member 40 both send detection signals to the controller, and the controller controls the control valve 60 to close the water inlet 102 according to the detection signal of the position detection member 40. When the first water level detection member 50 and the second water level detection member 50 are both triggered, the first water level detection member 50 and the second water level detection member both send detection signals to the controller, and the controller controls the first driving member 301 to start working according to the detection signal of the position detection member 40 and the detection signal of the water level detection member 40, and controls the first driving member 301 to start working according to the detection signal of the position detection member 40 and the detection signal of the water level detection member 40. The first clutch assembly 303 is controlled to engage the first cleaning assembly 302 and the second cleaning assembly 302, the first driving member 301 drives the connecting rod 3023 in the first cleaning assembly 302 to drive the first cleaning member 3021 in the first cleaning assembly 302 to rotate, so as to clean the debris on the first filter element 20 to the discharge port 104, and the first driving member 301 drives the first cleaning member 3021 in the second cleaning assembly 302 to rotate through the first cleaning assembly 302 and the first clutch assembly 303 to clean the debris on the second filter element 20 to the discharge port 104.

[0086] It should be noted that, after the debris on the filter element 20 is cleaned, the position detection element 40 returns to the untriggered state, and the controller controls the control valve 60 to open the water inlet 102 .

[0087] By arranging multiple position detection components 40 and multiple water level detection components 50 in the equipment body 10, the controller drives the first driving component 301 and / or the first clutch assembly 303 to drive the first cleaning component 3021 corresponding to the filter element 20 to rotate according to the detection signal of the position detection component 40 and the detection signal of the water level detection component 50, so as to clean the debris on the filter element 20 to the discharge port 104, thereby avoiding excessive accumulation of debris on the filter element 20 and causing the filter element 20 to be blocked by the debris, thereby improving the working reliability of the coal power plant wastewater filtration equipment 100.

[0088] Furthermore, by detecting the liquid level height in the equipment body 10 through the water level detection component 50, it is possible to prevent the liquid in the equipment body 10 from flowing out of the discharge port 104 to the equipment body 10 as much as possible, and it is possible to prevent the coal power plant wastewater filtration equipment 100 from re-filtering the coal power plant wastewater flowing out of the equipment body 10, thereby improving the user experience of the coal power plant wastewater filtration equipment 100.

[0089] Reference Figure 1 and Figure 2 In some embodiments of the present application, the coal power plant wastewater filtration equipment 100 may also include: multiple drain valves 70, the drain valves 70 are arranged at the discharge port 104, and the multiple drain valves 70 correspond to the multiple discharge ports 104 one by one and are sealed, the drain valve 70 is used to open or close the discharge port 104, in some specific embodiments, the drain valve 70 can be a plug valve, but the present application is not limited to this, the drain valve 70 can also be a gate valve.

[0090] Specifically, the worker opens the discharge port 104 through the drain valve 70, and the first cleaning member 3021 cleans the debris on the filter 20 to the discharge port 104, thereby achieving the technical effect of discharging the debris on the filter 20 from the device body 10 through the discharge port 104. When the amount of debris accumulated on the filter 20 is small and the first cleaning member 3021 has not cleaned the debris on the filter 20, the worker closes the discharge port 104 through the drain valve 70, thereby preventing the liquid in the device body 10 from flowing out of the device body 10 from the discharge port 104, and preventing the coal power plant wastewater filtration device 100 from failing to filter the coal power plant wastewater.

[0091] Furthermore, the drain valve 70 can be communicatively connected to the controller, and the controller controls the drain valve 70 to open or close the discharge port 104 according to the detection signal of the position detection component 40 and the detection signal of the water level detection component 50. Specifically, when the position detection component 40 and the water level detection component 50 are both triggered, the controller controls the drain valve 70 to open the discharge port 104 according to the detection signal of the position detection component 40 and the detection signal of the water level detection component 50. When the debris on the filter element 20 is cleared to the discharge port 104 and the position detection component 40 is restored to an untriggered state, the controller controls the drain valve 70 to close the discharge port 104. Compared with the worker manually operating the drain valve 70 to open or close the drain port, such a setting can reduce the worker's work intensity and improve the worker's work efficiency.

[0092] Based on this, the present application further discloses a coal power plant wastewater treatment system. According to the embodiment of the present application, the coal power plant wastewater treatment system includes: a coal power plant wastewater filtration equipment 100. The coal power plant wastewater filtration equipment 100 can filter coal slag and coal powder in the coal power plant wastewater. The coal power plant wastewater filtration equipment 100 is the coal power plant wastewater filtration equipment 100 described in the above embodiment.

[0093] According to the coal power plant wastewater treatment system described in the embodiment of the present application, the coal power plant wastewater filtering equipment 100 is arranged in the coal power plant wastewater treatment system. When only coal slag needs to be cleaned, the corresponding two cleaning components 302 are separated by utilizing the first clutch 3031, thereby avoiding the rotation of the first cleaning member 3021 corresponding to the filter element 20 for filtering coal powder. Compared with the prior art, it is possible to avoid the coal powder on the filter element 20 floating in the equipment body 10, causing the coal powder to adhere to the inner circumferential wall of the equipment body 10, thereby reducing the number of times the workers clean the inner circumferential wall of the equipment body 10 and reducing the work intensity of the workers.

[0094] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coal-fired power plant wastewater filtration equipment, characterized in that: include: A device body (10), the device body (10) defining a filtering space (101), the outer peripheral wall of the device body (10) being provided with a water inlet (102), a water outlet (103) and a discharge port (104) all of which are in communication with the filtering space (101), the water inlet (102) being located above the water outlet (103) in the height direction of the coal power plant wastewater filtering device (100), the discharge port (104) being located between the water inlet (102) and the water outlet (103), and at least two of the discharge ports (104) being arranged at intervals in the height direction of the coal power plant wastewater filtering device (100); A plurality of filter elements (20), each filter element (20) having a filter hole (201) on its surface, the plurality of filter elements (20) being arranged in the device body (10) at intervals along the height direction of the coal power plant wastewater filtering device (100), each filter element (20) being arranged between the water inlet (102) and the water outlet (103) and corresponding to at least one of the discharge ports (104) and located below the corresponding discharge port (104); A cleaning mechanism (30), the cleaning mechanism (30) being arranged in the device body (10), the cleaning mechanism (30) comprising a first driving member (301), a plurality of cleaning components (302) and a first clutch component (303), the plurality of cleaning components (302) being connected in sequence, and the plurality of cleaning components (302) being arranged in one-to-one correspondence with the plurality of filter elements (20), the cleaning component (302) comprising a first cleaning member (3021) abutting against the filter element (20), the first driving member (301) being connected and matched with the cleaning component (302) located at the end of the plurality of cleaning components (302), and when the cleaning component (302) is driven by the first driving member (301), the first cleaning member (3021) moves along the surface of the filter element (20) to clean the debris on the surface of the filter element (20) to the discharge port (104); The first clutch assembly (303) is provided between at least two adjacent cleaning assemblies (302), and the first clutch assembly (303) is used to engage or separate the corresponding two cleaning assemblies (302) so as to enable the corresponding two cleaning assemblies (302) to rotate or remain stationary relative to each other.

2. A coal-fired power plant wastewater filtration device according to claim 1, characterized in that: The first clutch assembly (303) comprises a first clutch member (3031), a second clutch member (3032) and a second driving member (3033); the first clutch member (3031) is connected and cooperated with one of the two adjacent cleaning members (302); the second clutch member (3032) is movably arranged on the other of the two adjacent cleaning members (302); the cleaning member (302) provided with the second clutch member (3032) extends into the first clutch member (3031) and is suitable for rotating relative to the first clutch member (3031); the second driving member (3033) is transmission-connected with the second clutch member (3032); the second driving member (3033) is used to drive the second clutch member (3032) to extend into or move out of the first clutch member (3031) so as to engage or separate the first clutch member (3031) and the second clutch member (3032).

3. A coal-fired power plant wastewater filtration equipment according to claim 2, characterized in that: The first clutch (3031) defines a limiting channel (3034), and the cleaning component (302) provided with the second clutch (3032) has a limiting protrusion (3022), and the limiting protrusion (3022) is extended along the circumferential direction of the corresponding cleaning component (302). The limiting protrusion (3022) extends into the limiting channel (3034) and is suitable for moving along the limiting channel (3034), so that the cleaning component (302) provided with the second clutch (3032) is suitable for rotating relative to the first clutch (3031).

4. A coal-fired power plant wastewater filtration equipment according to claim 3, characterized in that: The first clutch member (3031) comprises a clutch member body (3035) and a cover body (3036); an end portion of the clutch member body (3035) is provided with a receiving groove (3037); the bottom of the receiving groove (3037) is configured as a first friction surface (3038); the second clutch member (3032) extends into the receiving groove (3037); an end surface of the second clutch member (3032) opposite to the first friction surface (3038) is configured as a second friction surface (3039); the first friction surface (3038) and the second friction surface (3039) are stopped or separated to enable the first clutch member (3031) and the second clutch member (3032) to engage or separate; The cover body (3036) is disposed on the open end of the receiving groove (3037) and is used to open or close the limiting channel (3034).

5. A coal-fired power plant wastewater filtration device according to claim 1, characterized in that: The cleaning assembly (302) also includes a connecting rod (3023), the filter element (20) has an avoidance hole (202) for allowing the connecting rod (3023) to pass through, the first cleaning element (3021) is arranged on the outer peripheral wall of the connecting rod (3023) and extends along the radial direction of the connecting rod (3023), the end of the connecting rod (3023) has a mounting portion (3024), and the mounting portion (3024) is used to connect and cooperate with the first driving member (301) or the first clutch assembly (303), and the connecting rod (3023) rotates around the central axis of the connecting rod (3023) when driven.

6. A coal-fired power plant wastewater filtration equipment according to claim 5, characterized in that: The cleaning component (302) also includes a second cleaning member (3025), which is arranged on the outer peripheral wall of the connecting rod (3023), and the second cleaning member (3025) includes a cleaning portion (3026) and a connecting portion (3027), and the cleaning portion (3026) is abutted against the inner peripheral wall of the equipment body (10), and the connecting portion (3027) is connected between the connecting rod (3023) and the cleaning portion (3026), and the water inlet (102) is suitable for being arranged opposite to the side wall of the cleaning portion (3026) of at least one of the cleaning components (302).

7. A coal-fired power plant wastewater filtration equipment according to any one of claims 1-6, characterized in that: The filter element (20) is configured as a conical element, and the filter element (20) is arranged to be inclined downward in a direction from the center of the filter element (20) to the edge of the filter element (20).

8. A coal-fired power plant wastewater filtration device according to claim 1, characterized in that: Also includes: A plurality of position detection components (40), along the height direction of the coal power plant wastewater filtering device (100), the plurality of position detection components (40) are all arranged on the device body (10) and are arranged in sequence and spaced apart, the plurality of position detection components (40) are respectively arranged in one-to-one correspondence with the plurality of filtering components (20), and the position detection components (40) are used to detect the height of debris on the corresponding filtering components (20); A plurality of water level detection components (50), along the height direction of the coal power plant wastewater filtering device (100), the plurality of water level detection components (50) are all arranged on the device body (10) and are arranged in sequence and spaced apart, the plurality of water level detection components (50) are respectively arranged in one-to-one correspondence with the plurality of filtering components (20), and the water level detection components (50) are used to detect the liquid level of the liquid in the device body (10); A control valve (60), wherein the control valve (60) is disposed at the water inlet (102); A controller, wherein the first driving member (301), the first clutch assembly (303), the plurality of position detecting members (40), the plurality of water level detecting members (50) and the control valve (60) are all connected to the controller for communication, and the controller is used to control the start or stop of the first driving member (301) according to the detection signal of the position detecting member (40) and / or the detection signal of the water level detecting member (50), and to control the engagement or disengagement of the first clutch assembly (303) according to the detection signal of the position detecting member (40) and / or the detection signal of the water level detecting member (50), and to control the opening or closing of the control valve (60) according to the detection signal of the position detecting member (40).

9. A coal-fired power plant wastewater filtration device according to claim 1, characterized in that: Also includes: A plurality of drain valves (70), wherein the drain valves (70) are arranged at the discharge ports (104), and the plurality of drain valves (70) are respectively arranged in one-to-one correspondence with the plurality of discharge ports (104), and the drain valves (70) are used to open or close the discharge ports (104).

10. A coal-fired power plant wastewater treatment system, characterized in that: It comprises a coal power plant wastewater filtering device (100) according to any one of claims 1-9.

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