Filtering structure for sewage treatment and sewage treatment equipment

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to sewage filtration. The utility model provides a filter structure for sewage treatment, which comprises a support cage, a filter bag and a filter element, the driving end of the driving structure is rotationally connected with the supporting cage; the cleaning structures are arranged along the circumferential surface of the supporting cage at equal intervals, and the cleaning ends of the cleaning structures abut against the surfaces of the filter bags; wherein the driving structure is configured to drive the supporting cage to rotate in the forward direction or the reverse direction, so that the cleaning structure rubs the surface of the filter bag to sweep off muddy substances; according to the utility model, the supporting cage which continuously rotates in a forward and reverse switching manner is arranged, the bottom of the supporting cage is sleeved with the filter bag, and the cleaning structure is arranged to rub the filter bag part, so that the effect of cleaning mud on the surface of the filter bag is realized, and the problem that the filtering capacity of the filter bag is reduced due to accumulation of the mud is avoided; furthermore, the cleaning frequency of the sewage treatment equipment is greatly reduced, the downtime and the downtime duration are reduced, and the filtering efficiency is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to wastewater filtration, and more particularly to a filtration structure and wastewater treatment equipment for wastewater treatment. Background Technology

[0002] In industrial production and other related fields, the filtration of metal dust is a crucial task. Currently, filter bag filtration is commonly used for metal dust filtration. This method is widely used in industrial production. Its main principle is that through the porous structure of the filter bag, when the dust-laden airflow passes through the filter bag, the metal dust is trapped on the surface of the filter bag, thereby achieving solid-liquid separation and achieving the purpose of filtering metal dust.

[0003] However, in practical applications, filter bag filtration has significant limitations. As the filter bag is used for a longer period of time, dust accumulates on its surface and in its internal pores, causing the filter bag's liquid permeability to gradually decrease. This phenomenon directly leads to a gradual decrease in filtration capacity, meaning that the amount of dust-laden liquid filtered through the filter bag per unit time continuously declines.

[0004] When the filtration volume decreases to a certain extent, in order to ensure normal filtration effect and production needs, it is necessary to stop the machine to clean or replace the filter bag. During the cleaning or replacement process, the equipment needs to be stopped, which will seriously affect the continuity of production, resulting in a significant reduction in filtration efficiency and an increase in cost. Therefore, it can only be used in scenarios with low dust content and has poor applicability.

[0005] Therefore, how to solve the problem of the gradual decrease in filtration capacity of filter bags over time during use is a technical problem that urgently needs to be solved in this field.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0007] This disclosure provides at least one filtration structure for wastewater treatment to address the technical problem that the filtration capacity of filter bags gradually decreases over time during use.

[0008] In a first aspect, embodiments of this disclosure provide a filtration structure for wastewater treatment, comprising: a support cage, the lower half of which is fitted with a filter bag; a drive structure, the drive end of which is rotatably connected to the support cage; and a cleaning structure, which is equally spaced along the circumference of the support cage, with the cleaning end of the cleaning structure abutting against the surface of the filter bag; wherein the drive structure is configured to drive the support cage to rotate in the forward or reverse direction, causing the cleaning structure to rub against the surface of the filter bag to sweep off sludge.

[0009] In one optional embodiment, the cleaning structure includes: a vertical plate with a brush disposed on the side facing the filter bag; and the distance between the vertical plate and the surface of the filter bag is H, 9.5cm≤H≤10.5cm, and the length of the brush is L, 0.5cm≤LH≤1cm.

[0010] In one optional embodiment, the drive structure includes a rack and a gear meshing therewith, one end of the rack being connected to a cylinder, and the gear being connected to a support cage via a long shaft; wherein, the cylinder drives the rack to move and rotate the gear, which is suitable for synchronously rotating the filter bag on the support cage so that the brush rubs the surface of the filter bag.

[0011] In one alternative embodiment, the filter bag is any one of nylon, polypropylene, polyester, polytetrafluoroethylene, and stainless steel.

[0012] In one alternative embodiment, the surface pore size of the filter bag is 150-200 mesh.

[0013] Secondly, this disclosure also provides a wastewater treatment device, including: a bracket with a box on top, a cover on top of the box, a filter structure as described above being disposed inside the box and partially extending into the cover; a sludge collection hopper fixed on the bracket below the box; a water tank disposed below the drain outlet of the sludge collection hopper; and a pumping device with its inlet connected to the water tank via a pipe and its outlet connected to the box via a pipe.

[0014] In one optional embodiment, the water tank has an internal partition with a first chamber on one side and a second chamber on the other side; the first chamber is connected to a drain outlet, and the second chamber is connected to a water inlet.

[0015] In one optional embodiment, the support cage is disposed inside the box, with the long shaft passing through the cover into the box; the top of the upright plate is fixedly connected to the top of the box; the cylinder is mounted on the top surface of the box, and its output end extends into the cover; the rack and gear are disposed inside the cover; a guide ridge is provided on one side of the cover, part of which is embedded in the rack, and the rack is adapted to move along the length direction of the guide ridge; the top of the cover has a disassembly and repair opening corresponding to the brush.

[0016] In one optional embodiment, the top of the housing is provided with a water inlet pipe and an exhaust pipe, a float is provided on the top surface of the housing between the air inlet pipe and the exhaust pipe, and the lower half of the float extends into the housing; and the water inlet pipe is provided on one side of the outer periphery of the support cage.

[0017] In one optional embodiment, a butterfly valve is provided at the drain outlet location.

[0018] Compared with existing technologies, the wastewater treatment filtration structure and treatment equipment proposed in this utility model have the following advantages:

[0019] 1. By setting up a support cage and placing a filter bag at the bottom of the support cage, a cleaning structure is set up to rub the filter bag part, which can achieve the cleaning effect of mud on the surface of the filter bag. This avoids the problem of reduced filtration capacity due to the accumulation of mud, thereby greatly reducing the cleaning frequency of the sewage treatment equipment, reducing downtime and downtime duration, and effectively improving filtration efficiency.

[0020] 2: By setting a sludge collection hopper under the support cage, the dirt that falls from the filter bag surface after being cleaned by the brush is collected in the sludge collection hopper. After a certain amount has accumulated, the drain port is opened by the butterfly valve to clean the drain hole inside the sludge collection hopper, which greatly reduces the difficulty of cleaning mud-like dirt and improves the cleaning efficiency.

[0021] 3: By setting up a drive structure, the drive support cage can be rotated continuously in both forward and reverse directions, which prevents mud-like dirt from accumulating on one side of the filter bag gaps. When switching the cleaning direction, the mud-like material accumulated on the side of the brush can fall off, thereby effectively improving the cleaning effect.

[0022] 4. This wastewater treatment equipment occupies little space and can be used as a unit in environments with large wastewater treatment volumes. Multiple units can be combined to achieve rapid treatment of large amounts of wastewater.

[0023] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A perspective view of a wastewater treatment device provided in an embodiment of this disclosure;

[0027] Figure 2 A perspective view of the bracket connection state provided in the embodiments of this disclosure;

[0028] Figure 3 A perspective view of the filter structure provided in an embodiment of this disclosure.

[0029] Among them: 1 is bracket, 11 is sludge collection hopper, 12 is drain outlet, 13 is butterfly valve, 2 is box body, 21 is water inlet pipe, 22 is exhaust pipe, 23 is float ball, 3 is cover body, 31 is guide ridge, 32 is disassembly and repair port, 4 is water tank, 41 is partition plate, 42 is first chamber, 43 is second chamber, 5 is water pumping device, 51 is water inlet, 52 is drain outlet, 6 is drive structure, 61 is cylinder, 62 is rack and pinion, 63 is gear, 64 is long shaft, 7 is support cage, 71 is filter bag, 8 is cleaning structure, 81 is upright plate, 82 is brush. Detailed Implementation

[0030] This utility model provides a sewage treatment device, which mainly includes: a support cage 7, a filter bag 71, a drive structure 6, and a cleaning structure 8.

[0031] In this invention, the filter bags include, but are not limited to, the following types:

[0032] 1. Nylon: It has good abrasion resistance and corrosion resistance, and is suitable for industrial liquid filtration and particulate filtration. It is often used in applications requiring high strength and durability.

[0033] 2. Polypropylene (PP): It has good chemical and corrosion resistance, making it suitable for general liquid filtration, such as wastewater treatment and chemical raw material filtration. It is low in cost, easy to process, and suitable for most industrial applications.

[0034] 3. Polyester (PET), commonly known as polyester fiber: It has good abrasion resistance and tensile strength, and is suitable for the food, beverage, pharmaceutical and chemical industries. It can usually be used at higher temperatures and has good temperature resistance.

[0035] 4. Polytetrafluoroethylene (PTFE): Possesses excellent high-temperature resistance and chemical corrosion resistance, making it suitable for filtering high-temperature flue gas and corrosive gases. Suitable for use in extremely harsh environments, but it is more expensive.

[0036] 5. Stainless Steel Wire Mesh: Made of stainless steel wire mesh, it features high temperature resistance and corrosion resistance, making it suitable for high-temperature flue gas filtration and liquid filtration. Ideal for applications requiring high strength and durability.

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0039] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0042] Example 1, as Figures 1 to 3 As shown, some embodiments provide a filtration structure for wastewater treatment, including: a support cage 7, the lower half of which is fitted with a filter bag 71; the filter bag 71 is made of non-metallic material with a surface pore size of 150-200 mesh, such as nylon, polypropylene, polyester, or polytetrafluoroethylene. Filter bags 71 made of these materials can filter metallic wastewater, including wastewater containing aluminum powder.

[0043] The drive structure 6 is rotatably connected to the support cage 7. Specifically, a cross-shaped reinforcing rib is provided at the center of the support cage 7. The output end of the drive structure 6 is fixed to the cross-shaped reinforcing rib and the bottom surface of the support cage 7, so as to achieve the effect of the drive structure 6 driving the support cage 7 to rotate repeatedly in the forward and reverse directions. The cleaning structure 8 is evenly spaced along the circumference of the support cage 7, and the cleaning end of the cleaning structure 8 abuts against the surface of the filter bag 71. At least three sets of cleaning structures 8 are provided. While the support cage 7 rotates repeatedly in the forward and reverse directions, the cleaning structure 8 will clean the mud on the surface of the filter bag 71 and concentrate it on the lower part of the outer periphery of the support cage 7.

[0044] It should be added that the sewage falls from above the outer periphery of the support cage 7, that is, the sewage flows from the outer side of the filter bag 71 to the inner side. During this process, impurities in the sewage will be retained on the surface of the filter bag 71, and the filtered water flows downward from the inner periphery of the support cage 7. Specifically, the drive structure is configured to drive the support cage 7 to rotate in the forward or reverse direction, so that the cleaning structure 8 rubs the surface of the filter bag 71 to sweep off the mud.

[0045] Please see Figure 3 The following describes the composition of the cleaning structure 8. The cleaning structure 8 includes: a vertical plate 81, on which a brush 82 is provided on the side facing the filter bag 71; and the distance between the vertical plate 81 and the surface of the filter bag 71 is H, 9.5cm≤H≤10.5cm, and the length of the brush 82 is L, 0.5cm≤LH≤1cm. Specifically, the length of the brush 82 is greater than the distance between the vertical plate 81 and the surface of the filter bag 71, that is, when the brush 82 contacts the surface of the filter bag 71, the surface is curved to a certain extent, and part of it can extend into the filter pores of the filter bag 71; during the rotation of the support cage 7, the brush 82 will rub and sweep off the dirt on the surface of the filter bag 71 to avoid the phenomenon of clogging of the pores on the filter bag 71 and reducing the filtration capacity.

[0046] Please see Figure 3 The following describes the composition of the drive structure 6. The drive structure 6 includes a rack 62 and a gear 63 meshing with it. One end of the rack 62 is connected to the cylinder 61, and the gear 63 is connected to the support cage 7 via a long shaft 64. The cylinder 61 can drive the rack 62 to move in the F1 direction. At this time, the support cage 7 rotates in the F2 direction. The cylinder 61 can also drive the rack 62 to move in the opposite direction of F1. At this time, the support cage 7 rotates in the opposite direction of F2. As the cylinder 61 continuously switches the direction of movement of the rack 62, the support cage 7 also continuously switches the direction of rotation. This allows the mud accumulated on the brush 82 to fall off when the rotation direction is switched, effectively enhancing the effect of the self-cleaning filter bag 71. The cylinder 61 drives the rack 62 to move, causing the gear 63 to rotate, which is suitable for synchronously rotating the filter bag 71 on the support cage 7 so that the brush 82 rubs the surface of the filter bag 71.

[0047] Example 2, as Figures 1 to 3 As shown, some embodiments provide a filtration structure for wastewater treatment, including: a support cage 7, the lower half of which is fitted with a filter bag 71; the filter bag 71 is made of metal, such as stainless steel mesh, with a surface pore size of 150-200 mesh, and the stainless steel mesh filter bag 71 can filter wastewater with certain adhesive impurities.

[0048] The drive structure 6 is connected to the support cage 7. Specifically, the support cage 7 has a cross-shaped reinforcing rib at its center. The output end of the drive structure 6 is fixed to the cross-shaped reinforcing rib and the bottom surface of the support cage 7, so that the drive structure 6 drives the support cage 7 to rotate repeatedly in both forward and reverse directions. The cleaning structure 8 is set at equal intervals along the circumference of the support cage 7, and the cleaning end of the cleaning structure 8 abuts against the surface of the filter bag 71. At least three sets of cleaning structures 8 are set. While the support cage 7 rotates repeatedly in both forward and reverse directions, the cleaning structure 8 cleans the mud-like material on the surface of the filter bag 71, causing it to concentrate on the lower part of the outer periphery of the support cage 7.

[0049] It should be added that the sewage falls from above the outer periphery of the support cage 7, that is, the sewage flows from the outer side of the filter bag 71 to the inner side. During this process, impurities in the sewage will be retained on the surface of the filter bag 71, and the filtered water flows downward from the inner periphery of the support cage 7. Specifically, the drive structure is configured to drive the support cage 7 to rotate in the forward or reverse direction, so that the cleaning structure 8 rubs the surface of the filter bag 71 to sweep off the mud.

[0050] Please see Figure 3 The following describes the composition of the cleaning structure 8. The cleaning structure 8 includes: a vertical plate 81, on which a brush 82 is provided on the side facing the filter bag 71; and the distance between the vertical plate 81 and the surface of the filter bag 71 is H, 9.5cm≤H≤10.5cm, and the length of the brush 82 is L, 0.5cm≤LH≤1cm. Specifically, the length of the brush 82 is greater than the distance between the vertical plate 81 and the surface of the filter bag 71, that is, when the brush 82 contacts the surface of the filter bag 71, the surface is curved to a certain extent, and part of it can extend into the filter pores of the filter bag 71; during the rotation of the support cage 7, the brush 82 will rub and sweep off the dirt on the surface of the filter bag 71 to avoid the phenomenon of clogging of the pores on the filter bag 71 and reducing the filtration capacity.

[0051] Please see Figure 3 The following describes the composition of the drive structure 6. The drive structure 6 includes a rack 62 and a gear 63 meshing with it. One end of the rack 62 is connected to a cylinder 61, and the gear 63 is connected to the support cage 7 via a long shaft 64. The cylinder 61 can drive the rack 62 to move in the F1 direction, at which time the support cage 7 rotates in the F2 direction. The cylinder 61 can also drive the rack 62 to move in the opposite direction of F1, at which time the support cage 7 rotates in the opposite direction of F2. As the cylinder 61 continuously switches the direction of movement of the rack 62, the support cage 7 also continuously switches the direction of rotation. This allows the mud accumulated on the brush 82 to fall off when the rotation direction is switched, effectively enhancing the self-cleaning effect of the filter bag 71. In particular, the movement of the rack 62 driven by the cylinder 61 causes the gear 63 to rotate, which is suitable for synchronously rotating the filter bag 71 on the support cage 7, so that the brush 82 rubs the surface of the filter bag 71.

[0052] Example 3, please refer to Figures 1 to 3 Some embodiments provide a wastewater treatment device, including: a bracket 1, a sludge collection hopper 11 fixed on the bracket 1 below the box 2, a sludge discharge port 12 provided at the bottom of the sludge collection hopper 11, and a butterfly valve 13 provided at the position of the sludge discharge port 12. The support cage 7 is located directly above the sludge collection hopper 11. Sludge will fall into the sludge collection hopper 11 under the action of the brush 82. When the amount stored inside is large, the sludge discharge port 12 can be opened by the butterfly valve 13 to clean the discharge hole inside the sludge collection hopper 11.

[0053] The top of the bracket 1 is provided with a box 2, and observation frames are provided on both sides of the box 2 near the top; the top of the box 2 is provided with a cover 3. The sewage treatment equipment also includes a filter structure as described above. The filter structure is set inside the box 2 and the cover 3, specifically inside the box 2 and partially extending into the cover 3.

[0054] Specifically, the support cage 7 is set inside the box 2, and the long shaft 64 mounted on the gear 63 passes through the cover 3 into the box 2. The connection between the long shaft 64 and the box 2 and the cover 3 is a rotatable connection.

[0055] The cylinder 61 is mounted on the top surface of the housing 2 via a bracket, and its output end extends into the cover 3; the rack 62 and gear 63 are disposed inside the cover 3; in addition, a guide protrusion 31 is provided on one side of the cover 3, which is partially embedded in the rack 62. The rack 62 is provided with a guide groove corresponding to the guide protrusion 31. The rack 62 is adapted to move along the length direction of the guide protrusion 31. The cylinder 61 can drive the rack 62 to move along F1 and the opposite direction of F1 under the action of the guide protrusion 31 and the guide groove.

[0056] To facilitate the replacement and maintenance of the brush 82, the top of the upright plate 81 is fixedly connected to the top of the housing 2, specifically in a detachable manner. The top of the cover 3 has a disassembly and repair opening 32 corresponding to the brush 82, so that the staff can replace and repair the brush 82 from the top of the housing 2.

[0057] Please see Figure 1 and combined Figure 2The water tank 4 is located below the drain outlet 12 of the sludge collection hopper 11. The interior of the water tank 4 has a partition 41, the height of which is less than the depth of the water tank 4. The first chamber 42 contains filtered water, the second chamber 43 contains water that needs filtration, and the water tank 4 above the partition 41 contains water that does not need filtration. One side of the partition 41 is the first chamber 42, and the other side is the second chamber 43. The first chamber 42 is connected to the drain outlet 12, and the second chamber 43 is connected to the inlet 51. A pumping device 5 has its inlet 51 connected to the water tank 4 via a pipe, and its outlet 52 connected to the tank body 2 via a pipe. It should be noted that the pumping device 5 includes a water pump.

[0058] Specifically, the second chamber 43 is also connected to the wet dust removal equipment. That is, the wastewater generated by the dust removal equipment is discharged into the second chamber 43. Then, the water inlet 51 of the water pumping device 5 pumps water into the outlet 52 through the water pipe, and then enters the box 2 through the water pipe. Specifically, it enters the box 2 on one side of the outer periphery of the support cage 7. After the sewage is filtered by the filter bag 71, the mud falls into the sludge collection hopper 11. The filtered water is discharged into the first chamber 51 from the drain pipe set at the center of the support cage 7.

[0059] like Figure 1 As shown, it should be further explained that the top of the tank 2 is provided with a water inlet pipe 21 and an exhaust pipe 22. The water inlet pipe 21 is connected to the drain outlet 52 of the pumping device 5. A float ball 23 is provided on the top surface of the tank 2 between the water inlet pipe 21 and the exhaust pipe 22. The float ball 23 is used to facilitate observation of the sewage level in the tank 2. The lower half of the float ball 23 extends into the tank 2. The water inlet pipe 21 is located on one side of the outer periphery of the support cage 7. The exhaust pipe 22 is used to balance the air pressure in the sewage treatment equipment tank. In addition, when treating wastewater containing aluminum powder, the exhaust pipe 22 is used to discharge hydrogen gas.

[0060] In addition, the top of the float 23 extends above the tank 2. When the float 23 rises to a certain height, the staff observes the height in order to stop the operation of the pumping device 5. As an additional preferred method, the top of the float 23 is connected to the control device. When its height rises to the set height, the control device sends an electrical signal to shut off the operation of the pumping device 5, thereby stopping the pumping of sewage into the tank 2.

[0061] In summary, by setting up a support cage 7 that rotates continuously in both forward and reverse directions, and by fitting a filter bag 71 at the bottom of the support cage 7, and by setting up a cleaning structure 8 to rub the filter bag 71, the mud-like material on the surface of the filter bag 71 is cleaned. This avoids the problem of reduced filtration capacity of the filter bag 71 due to the accumulation of mud-like material, thereby greatly reducing the cleaning frequency of the sewage treatment equipment, reducing downtime and downtime duration, and effectively improving filtration efficiency.

[0062] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A filter structure for wastewater treatment, characterized in that, include: The lower half of the support cage (7) is fitted with a filter bag (71). The drive structure (6) has its drive end rotatably connected to the support cage (7); The cleaning structure (8) is arranged at equal intervals along the periphery of the support cage (7), and the cleaning end of the cleaning structure (8) abuts against the surface of the filter bag (71); The drive structure (6) is configured to drive the support cage (7) to rotate in the forward or reverse direction, so that the cleaning structure (8) rubs the surface of the filter bag (71) to sweep away mud.

2. The filter structure as described in claim 1, characterized in that, The cleanup structure (8) includes: A vertical plate (81) has a brush (82) on the side facing the filter bag (71); and The distance between the upright plate (81) and the surface of the filter bag (71) is H, 9.5cm≤H≤10.5cm, and the length of the brush (82) is L, 0.5cm≤LH≤1cm.

3. The filter structure as described in claim 2, characterized in that, The drive structure (6) includes a rack (62) and a gear (63) meshing with it. One end of the rack (62) is connected to the cylinder (61), and the gear (63) is connected to the support cage (7) through a long shaft (64). The cylinder (61) drives the rack (62) to move and the gear (63) to rotate, which is suitable for synchronously rotating the filter bag (71) on the support cage (7) so that the brush (82) rubs the surface of the filter bag (71).

4. The filter structure as described in claim 1, characterized in that, The filter bag (71) is any one of nylon, polypropylene, polyester, polytetrafluoroethylene, or stainless steel.

5. The filter structure as described in claim 1, characterized in that, The surface pore size of the filter bag (71) is 150-200 mesh.

6. A wastewater treatment device, characterized in that, include: A bracket (1) is provided with a box (2) on its top, and a cover (3) is provided on the top of the box (2). The filter structure as described in any one of claims 1-5 is provided inside the box (2) and extends partially into the cover (3). A sludge collection hopper (11) is fixed on the bracket (1) below the box (2). Water tank (4), which is located below the drain outlet (12) of the sludge collection hopper (11); The water pumping device (5) has its inlet (51) connected to the water tank (4) via a pipe, and its outlet (52) connected to the tank body (2) via a pipe.

7. The wastewater treatment equipment as described in claim 6, characterized in that, The water tank (4) has a partition (41) inside, with a first chamber (42) on one side and a second chamber (43) on the other side; and The first chamber (42) is connected to the drain outlet (12), and the second chamber (43) is connected to the inlet (51).

8. The wastewater treatment equipment as described in claim 7, characterized in that, The support cage (7) is set inside the box (2), and the long shaft (64) passes through the cover (3) into the box (2); The top of the upright plate (81) is fixedly connected to the top of the box body (2); The cylinder (61) is installed on the top surface of the housing (2), and its output end extends into the cover (3); The rack (62) and gear (63) are disposed inside the cover (3); A guide ridge (31) is provided on one side of the cover (3), part of which is embedded in the rack (62), and the rack (62) is adapted to move along the length direction of the guide ridge (31); The top of the cover (3) is provided with a disassembly and repair port (32) corresponding to the brush (82).

9. The wastewater treatment equipment as described in claim 8, characterized in that, The top of the housing (2) is provided with a water inlet pipe (21) and an exhaust pipe (22). A float (23) is provided on the top surface of the housing between the water inlet pipe (21) and the exhaust pipe (22). The lower half of the float (23) extends into the housing (2). The water inlet pipe (21) is located on one side of the outer periphery of the support cage (7).

10. The wastewater treatment equipment as described in claim 9, characterized in that, A butterfly valve (13) is installed at the drain outlet (12).

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