A cleaning assembly for a screen, a drum structure and a sewage filtering device

Abstract

This utility model discloses a filter screen cleaning component, a drum structure, and a wastewater filtration device, relating to the technical field of wastewater treatment equipment. The filter screen cleaning component includes several first spray pipes and several second spray pipes, located on the outer and inner sides of the filter screen, respectively, with the spray directions of both pipes pointing towards the filter screen. The drum structure is equipped with the filter screen cleaning component, and the wastewater filtration device is equipped with the drum structure. This solution cleans both the inner and outer sides of the filter screen simultaneously, achieving a more comprehensive cleaning of solids adhering to the screen, thus improving the thoroughness and efficiency of filter screen cleaning.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, and in particular to a cleaning component for filter screens, a drum structure, and a wastewater filtration device. Background Technology

[0002] In the wastewater treatment process, a large amount of wastewater is in a solid-liquid mixed state, especially sludge. The water content of sludge to be dewatered can usually reach 99%. Therefore, basic solid-liquid separation is required when treating sludge so that solids and water can be treated separately, thereby improving sludge treatment efficiency.

[0003] Existing technologies typically utilize a rotating drum structure with a filter screen to separate solids and liquids. During the separation of solids and water, the solids adhere to and deposit on the inner wall of the rotating drum structure. The deposited sludge is then discharged from the rotating drum structure to complete the separation operation.

[0004] When a large amount of solids adhere to the inner wall of the drum structure, the filtration efficiency of the drum structure will be greatly reduced. Therefore, it is necessary to clean the filter screen of the drum structure to keep the filtration process unobstructed.

[0005] Therefore, providing a cleaning component that can more quickly restore the water filtration function of the drum structure by rinsing the filter screen is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] This utility model discloses a cleaning component for filter screens, a drum structure, and a wastewater filtration device to solve the technical problem of reduced water filtration efficiency caused by sludge adhering to filter screens in related technologies.

[0007] To solve the above problems, the present invention adopts the following technical solution: In a first aspect, this application provides a cleaning assembly for a filter screen, comprising a plurality of first spray pipes and a plurality of second spray pipes, wherein the first spray pipes and the second spray pipes are located on the outer and inner sides of the filter screen, respectively, and the spraying directions of the first spray pipes and the second spray pipes are both directed toward the filter screen.

[0008] Furthermore, there are at least two first spray pipes, and the positions of the first spray pipe aligned with the filter screen and the positions of the second spray pipe aligned with the filter screen are staggered.

[0009] Furthermore, the center of the cross-section of any two adjacent first spray pipes can be connected to the center of the cross-section of a second spray pipe to form an isosceles triangle.

[0010] Furthermore, the first spray pipe includes a pipe body, on which a plurality of nozzles are provided, the nozzles facing the filter screen; the nozzles of two adjacent first spray pipes are arranged in an alternating pattern.

[0011] Furthermore, it also includes a base, which is fixed to the outside, and a plurality of suspension brackets are provided on the base, and the first spray pipes are all detachably fixed to the side of the suspension brackets.

[0012] Furthermore, the suspension frame includes a suspension plate, on which a load-bearing body is fixed. A first connector is provided on one side of the load-bearing body, and the load-bearing body and the base are detachably and fixedly connected through the first connector. A second connector is provided on the other side of the load-bearing body, and the load-bearing body and the first spray pipe are detachably and fixedly connected through the second connector.

[0013] Furthermore, it also includes a support member, which is fixed to the outside and is used to support the suspension of the second spray pipe.

[0014] Secondly, this application provides a drum structure, including a drum body, the drum body being a hollow structure, and a cleaning assembly for a filter screen as described in the first aspect being installed on the drum body, the first spray pipe being located outside the drum body, and the second spray pipe being located inside the drum body.

[0015] Furthermore, a mud discharge trough is suspended inside the drum body, with the opening of the mud discharge trough facing the cleaning assembly; And / or, the drum body is provided with a plurality of sludge tanks, and the sludge tanks are fixed to the inner wall of the drum body.

[0016] Thirdly, this application provides a wastewater filtration device, including a housing, in which a drum structure as described in the second aspect is installed. The bottom of the housing is fixed with an independent feed chamber and a discharge chamber. The feed chamber is connected to the drum body, and the discharge chamber is connected to the outside of the drum body. The feeding hopper is equipped with a feeding pipe and a return pipe. The height of the return pipe is higher than that of the feeding pipe. The drain hopper is equipped with a drain pipe. The input end of the cleaning component is connected to the drain pipe. Both the feed hopper and the drain hopper are equipped with drain pipes at their bottoms, and the sludge discharge pipe of the drum structure is connected to the outside of the housing.

[0017] The technical solution adopted in this utility model can achieve the following beneficial effects: The filter cleaning assembly disclosed in this application, by setting a first spray pipe and a second spray pipe, covers the spray positions of cleaning liquid on both the outer and inner sides of the filter screen, thereby achieving the purpose of cleaning both the inner and outer sides of the filter screen simultaneously. This provides a more comprehensive cleaning effect on the solids attached to the filter screen, eliminates some cleaning dead corners in unilateral cleaning, and improves the comprehensiveness and efficiency of filter screen cleaning. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the installation structure of the cleaning component and the drum structure in an embodiment of this application; Figure 2 This is a cross-sectional view of the cleaning assembly and drum structure according to an embodiment of this application; Figure 3 This is a side sectional view of the cleaning assembly and drum structure according to an embodiment of this application; Figure 4 This is a side view of the first spray pipe and base according to an embodiment of this application; Figure 5 yes Figure 4 Cross-sectional view at point AA; Figure 6 This is a side sectional view of the first spray pipe and base according to an embodiment of this application; Figure 7 This is a bottom view of the first spray pipe and base according to an embodiment of this application; Figure 8 This is a cross-sectional view of the first spray pipe according to an embodiment of this application; Figure 9 This is a schematic diagram of the drum structure installation according to an embodiment of this application; Figure 10 This is a schematic diagram of the wastewater filtration device according to an embodiment of this application.

[0020] In the diagram: 100, Cleaning assembly; 110, First spray pipe; 111, Inlet end; 112, Nozzle; 113, Pipe body; 114, Outlet end; 120, Suspension frame; 121, Suspension plate; 122, Bearing body; 123, First connector; 124, Second connector; 130, Base; 131, Side plate; 132, End plate; 140, Second spray pipe; 150, Buckle; 200, Drum body; 210, Sludge tank; 300, Sludge discharge tank; 310, Support; 400, Positioning component; 500, Connecting groove; 600, Sludge discharge pipe; 700, Rotation drive mechanism; 810, Feed hopper; 820, Feed pipe; 830, Return pipe; 840, Drain pipe; 850, Drainage pipe; 860, Drainage hopper; 870, Box body. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0023] Currently, solid-liquid separation filtration typically requires the use of filter screens. However, during use, these screens become clogged with solids, reducing their filtration efficiency. Cleaning is then necessary. While external rinsing or spraying is commonly used, solids are generally sticky, so simply rinsing or spraying the screen cannot remove all the adhering solids, and the filtration efficiency cannot be fully restored after cleaning.

[0024] The inventors recognized that one-sided cleaning of the filter screen has significant limitations because it cannot directly target the adhering solids. Therefore, by increasing the number of areas targeted for cleaning, all adhering solids on the filter screen can be directly cleaned, effectively increasing the cleaning efficiency, rapidly reducing the amount of solids, and helping the filter screen return to its high-efficiency filtration state.

[0025] The following is in conjunction with the appendix Figures 1 to 10 The present application provides a detailed description of a filter cleaning assembly 100 through specific embodiments and application scenarios.

[0026] Please see Figure 1 , Figure 2 This application provides a cleaning assembly for a filter screen, specifically including a plurality of first spray pipes 110 and a plurality of second spray pipes 140, with the first spray pipes 110 and second spray pipes 140 located on the outer and inner sides of the filter screen, respectively. Since the filter screen performs a filtering function, it has inner and outer regions when separating solids and liquids. When a solid-liquid mixture is introduced into the filter screen, the mixture is filtered from the inner to the outer side of the filter screen, with the solids remaining on the inner side and the liquid flowing to the outer side. If the first spray pipes 110 are placed on the outer side of the filter screen, the second spray pipes 140 are located on the inner side. The first spray pipes 110 spray the filter screen from the outside, effectively rinsing the mesh openings, while the second spray pipes 140 directly rinse the deposits on the inner side of the filter screen. In some embodiments of this application, the first spray pipes 110 and second spray pipes 140 can be interchanged.

[0027] When solids adhere to the filter screen, the screen needs to be cleaned. If only one side is sprayed, the solids adhering to the filter screen surface will detach, but if they are deeply embedded, they are difficult to remove. Furthermore, one-sided spraying results in the solids being subjected to a single force direction; if cleaning is incomplete, they will remain on the filter screen, posing a risk of damage over prolonged use. In this embodiment, the first spray pipe 110 and the second spray pipe 140 are located on the outer and inner sides of the filter screen, respectively. Therefore, the first spray pipe 110 and the second spray pipe 140 can clean the filter screen simultaneously from both sides. The adhered solids on the filter screen are subjected to rinsing forces from both the inner and outer directions, making them easier to detach from the filter screen.

[0028] When the mesh of a filter screen is clogged, the location of the blockage is relatively random. Therefore, simply rinsing one side of the filter screen may embed the blockage deeper. In this case, rinsing both sides of the filter screen alternately can more easily flush the blockage out of the mesh, allowing the filter screen to restore its efficient filtration capacity.

[0029] In specific applications of this application, it can be applied to various types of filter screens such as plate filter screens, cylindrical filter screens, filter belts, or polygonal filter screens. When solid matter is located on the side where the second spray pipe 140 is located, this application has the following usage methods: First, the first spray pipe 110 is mainly used to rinse the filter screen, so that the rinsing liquid completes the rinsing as it flows through the filter screen. The second spray pipe 140 is used as an auxiliary method. When the rinsing work cannot be effectively completed on the side of the first spray pipe 110, the second spray pipe 140 is opened to enhance the rinsing effect. Second, the second spray pipe 140 is mainly used to rinse the filter screen, so that the rinsing liquid acts directly on the attached matter. The first spray pipe 110 is used as an auxiliary method to prevent the attached matter from embedding into the mesh of the filter screen during the rinsing process. Third, the first spray pipe 110 and the second spray pipe 140 are used simultaneously and efficiently to form a back-and-forth rinsing effect on the filter screen, thereby efficiently completing the cleaning work of the filter screen.

[0030] The above methods can be flexibly selected according to the specific solids and filter types, and all can effectively improve filter cleaning efficiency, thereby achieving the goal of quickly restoring the filter to its high-efficiency filtration state.

[0031] In this embodiment, the spraying direction of the first spray pipe 110 and the spraying direction of the second spray pipe 140 are both directed towards the filter screen. This arrangement effectively enhances the rinsing effect of the first and second spray pipes on the filter screen, resulting in greater cleaning impact on the deposits on the filter screen, thus achieving faster and more thorough cleaning.

[0032] In some embodiments of this application, see Figure 2As shown, there are at least two first spray pipes 110, with the positions of the first spray pipes 110 and the second spray pipes 140 aligned with the filter screen in a staggered manner. The presence of at least two first spray pipes 110 allows for at least two cleaning sprays. If the filter screen passes through both sprays sequentially, it achieves both initial and secondary cleaning, effectively improving the cleaning effect. If the filter screen remains stationary, the cleaning area is increased, resulting in a more comprehensive cleaning process. The staggered positioning of the second spray pipes 140 and the first spray pipes 110 on the filter screen allows for alternating rinsing of the inner and outer sides. If the filter screen passes through the spray positions of different pipes sequentially, it achieves a reciprocating cleaning effect on both the inner and outer sides. Even when the filter screen remains stationary, it covers a larger cleaning area. Furthermore, the combined cleaning of the inner and outer sides ensures that the filter screen is not clogged on one side, maintaining its basic filtration capacity. The staggered distribution can also prevent the spray liquid from the first spray pipe 110 and the spray liquid from the second spray pipe 140 from convection, thereby avoiding mutual impact during cleaning and reducing the cleaning effect.

[0033] For example, when using a drum structure for sludge filtration, the first spray pipe 110 outside the drum structure first cleans the drum structure, and the stubborn deposits on the inner wall of the drum structure are removed by the rinsing of the second spray pipe 140. A second rinsing through the first spray pipe 110 then effectively achieves a drum structure with high filtration capacity. The rotation of the drum structure allows for mobile cleaning, increasing the flexibility of filter cleaning.

[0034] For example, when using a plate filter for filtration, the first spray pipe 110 and the second spray pipe 140 are distributed at different positions to avoid solid matter from depositing on one side of the filter and causing blockage, so that the plate filter can always maintain its filtration function and there is no risk of failure.

[0035] The center of the cross-section of any two adjacent first spray pipes 110 can be connected to the center of the cross-section of a second spray pipe 140 to form an isosceles triangle. The distance between any two adjacent first spray pipes 110 and second spray pipes 140 is the same, so the center of the cross-section of the first spray pipe 110 and the center of the cross-section of the second spray pipe 140 can form an isosceles triangle. This allows for three stages of spray cleaning at equal intervals, effectively avoiding convection while achieving the effect of reciprocating rinsing of the filter screen or preventing filter screen clogging due to deposits.

[0036] Please refer to some embodiments of this application. Figure 6 and Figure 7As shown, the first spray pipe 110 includes a pipe body 113, on which a plurality of nozzles 112 are provided, with the nozzles 112 facing the filter screen. By aligning the nozzles 112 with the filter screen, the best rinsing effect on the attached substances is ensured during spraying.

[0037] The nozzles 112 of two adjacent first spray pipes 110 are arranged in a staggered manner. This staggered arrangement of nozzles 112 covers a larger area of ​​the filter screen. If the filter screen completes its filtration operation during movement, one first spray pipe 110 acts on the filter screen first, followed by the other. The liquid impact force exerted by each nozzle 112 on the filter screen varies depending on the distance from the spray point. The staggered arrangement of the nozzles 112 effectively eliminates this difference in liquid impact force through two rounds of cross-coverage cleaning, thus consistently improving the overall cleaning effect of the filter screen.

[0038] Please refer to some embodiments of this application. Figures 3 to 5 As shown, the system also includes a base 130, which is fixed to the outside. Several suspension brackets 120 are provided on the base 130, and the first spray pipe 110 is detachably fixed to the side of each suspension bracket 120. Using the base 130 as a supporting foundation and the suspension brackets 120 for direct mounting, the first spray pipe 110 is suspended on the filter screen. Because the liquid sprayed from the first spray pipe 110 requires a certain interval to form a sufficient spray range, the cleaning range is effectively expanded. If the first spray pipe 110 is in close contact with the filter screen, it can only act on a localized area of ​​the filter screen and cannot effectively clean it. The distance between the spray position of the first spray pipe 110 and the filter screen needs to be effectively limited. Too close a distance may damage the filter screen, while too far a distance not only occupies equipment space but also reduces the cleaning effect. Therefore, in this embodiment of the application, the base 130 serves to provide support and position limitation. Side plates 131 and end plates 132 can also be provided on the base 130 to enclose the area of ​​the first spray pipe 110 cleaning the filter screen, thereby ensuring that the cleaning liquid sprayed from the first spray pipe 110 acts on the filter screen and also avoids liquid splashing and environmental pollution.

[0039] In some embodiments of this application, see Figure 5As shown, the suspension frame 120 includes a suspension plate 121, on which a load-bearing body 122 is fixed. The suspension plate 121, fixed to the outside, serves to support the base 130 and the first spray pipe 110. In this case, the suspension plate 121 acts as the supporting foundation for the base 130, and the fixed connection between the base 130 and the outside is achieved through the suspension plate 121. Since the load-bearing surface of the suspension plate 121 is limited, the load-bearing capacity of the suspension plate 121 is improved through the load-bearing body 122. A first connecting member 123 is provided on one side of the load-bearing body 122, allowing the load-bearing body 122 and the base 130 to be detachably and fixedly connected through the first connecting member 123. A second connecting member 124 is provided on the other side of the load-bearing body 122, allowing the load-bearing body 122 and the first spray pipe 110 to be detachably and fixedly connected through the second connecting member 124. The base 130 and the first spray pipe 110 are respectively connected to both sides of the carrier 122, so that the position of the first spray pipe 110 is not affected by the boundary of the base 130, making it easier to apply the cleaning liquid to the filter screen. The detachable fixed connection of the first spray pipe 110, the second connector 124 and the carrier 122 makes it easier to disassemble and maintain the first spray pipe 110. In this embodiment, the first spray pipe 110 and the carrier 122 can be connected by a buckle 150 looping around the first spray pipe 110 and detachably fixed to the second connector 124 and the buckle 150, thereby reducing the number of connection points, protecting the first spray pipe 110, improving the stress on the first spray pipe 110, and avoiding damage to the pipe caused by direct connection; the detachable fixed connection of the base 130, the first connector 123 and the carrier 122 facilitates the overall disassembly of the cleaning assembly 100 for the filter screen, thereby allowing for maintenance of parts or replacement of some components.

[0040] In some embodiments of this application, see Figure 2 It also includes a support member 310, which is fixed to the outside and is used to support the suspension of the second spray pipe 140. The support member 310 can extend beyond the filter screen, and its function is to support the second spray pipe 140 without affecting the cleaning of the filter screen by the second spray pipe 140. If there are multiple second spray pipes 140, the support member 310 can also support multiple second spray pipes 140 by adding branches, thereby ensuring that the second spray pipes 140 can be suspended above the filter screen, so as to facilitate the action of the cleaning fluid on the filter screen.

[0041] The following is in conjunction with the appendix Figures 1 to 3 and Figure 9 The present application provides a detailed description of a drum structure through specific embodiments and application scenarios.

[0042] Please see Figure 1As shown, this application provides a drum structure, specifically including a drum body 200, which is a hollow structure. A filter cleaning assembly 100, as described in the first aspect, is installed on the drum body 200. The drum body 200 is in a rotating state and has several filter plates. Filtration is achieved through these filter plates. After installing the filter cleaning assembly 100, the filter can be continuously cleaned during rotation, thereby maintaining the filter in a highly efficient filtration state at all times. Please refer to [link to relevant documentation]. Figure 2 As shown, the first spray pipe 110 is located outside the drum body 200, and the second spray pipe 140 is located inside the drum body 200. The hollow internal structure of the drum body 200 can effectively accommodate the second spray pipe 140, thereby enabling cleaning work to be carried out inside the drum body 200. Combined with the first spray pipe 110, it can effectively achieve alternating cleaning work on the outside and inside of the drum body 200, ensuring that the cleaning component 100 for the filter screen has a high cleaning quality.

[0043] For some embodiments of this application, please refer to Figure 3 As shown, a sludge discharge trough 300 is suspended inside the drum body 200, with its opening facing the filter screen cleaning assembly 100. The suspended sludge discharge trough 300 allows for continuous sludge discharge in this embodiment. The opening of the sludge discharge trough 300, facing the filter screen cleaning assembly 100, can collect some of the liquid from the filter screen cleaning assembly 100, thereby improving the fluidity of the sludge discharged from the sludge discharge trough 300. The amount of liquid sprayed by the filter screen cleaning assembly 100 does not significantly affect the water content of the sludge, so increasing sludge fluidity does not negate the results of the filtration operation.

[0044] The sludge mentioned in the embodiments of this application refers to solid waste containing a small amount of moisture. It can be soil or other mud-like pollutants, mud-like wastes, etc., and does not specifically refer to soil.

[0045] Please see Figure 2 As shown, the drum body 200 is provided with several sludge troughs 210, which are fixed to the inner wall of the drum body 200. Based on the suspended sludge discharge trough 300, the sludge deposited in the drum body 200 can be continuously discharged through the sludge discharge trough 300. However, the sludge deposited in the drum body 200 needs to be rotated and carried by the inner wall of the drum body 200 to be effectively discharged into the sludge discharge trough 300. This embodiment improves the ability of the inner wall of the drum body 200 to rotate and carry sludge by setting sludge troughs 210, thereby effectively improving the sludge removal efficiency.

[0046] For some embodiments of this application, please refer to Figure 9As shown, a positioning element 400 is installed outside the drum body 200, and the positioning element 400 is connected to the external support, sewage filtration device, etc., to form a support base. Then, a support element 310 is installed to support the suspended state of the sludge discharge trough 300. The connection between the support element 310 and the positioning element 400 forms a support point on the outside of the drum body 200. The support element 310 can support both the sludge discharge trough 300 and the second spray pipe 140. When supporting the second spray pipe 140, the support element 310 can be connected to the second spray pipe 140 through the frame sleeved outside the sludge discharge trough 300. This allows the second spray pipe 140 to not only spray and clean the filter screen on the inner wall of the drum body 200, but also to be suspended above the sludge discharge trough 300. The liquid sprayed from the second spray pipe 140 can fall into the sludge discharge trough 300 after cleaning the filter screen of the drum body 200, which helps to improve the fluidity of the sludge in the sludge discharge trough 300. The support member 310 effectively ensures the stability of the sludge discharge trough 300 suspended inside the drum body 200. Based on this, a connecting groove 500 is provided to connect the sludge discharge trough 300, thereby extending the passage of the sludge discharge trough 300 as an intermediate connector and effectively discharging the sludge from the sludge discharge trough 300.

[0047] The drum structure in this embodiment needs to rotate, and the rotation can be driven by a rotation drive mechanism 700, such as a crank-connecting rod mechanism, a hand crank arm, or a motor.

[0048] The following is in conjunction with the appendix Figure 10 The wastewater filtration device provided in this application will be described in detail through specific embodiments and application scenarios.

[0049] Please see Figure 10 As shown in the embodiment of this application, a wastewater filtration device is disclosed, specifically including a housing 870. A rotating drum structure according to the second aspect is installed inside the housing 870. The bottom of the housing 870 is fixed with an independent feed chamber 810 and a drain chamber 860. The feed chamber 810 is connected to the inside of the rotating drum body 200, and the drain chamber 860 is connected to the outside of the rotating drum body 200. The feed chamber 810 and the drain chamber 860 are set separately to avoid the mixing of wastewater and filtrate. The separation of wastewater and filtrate is achieved by dividing the feed chamber 810 into the inside of the rotating drum body 200 and the drain chamber 860 into the outside of the rotating drum body 200.

[0050] In this embodiment, the positioning element 400 can be directly fixed to the box 870, thereby achieving the purpose of supporting the mud discharge trough 300.

[0051] In this embodiment, the feed hopper 810 is equipped with a feed pipe 820 and a return pipe 830, with the return pipe 830 being higher than the feed pipe 820. The discharge hopper 860 is equipped with a discharge pipe 850. Since the drum body 200 has a limited capacity to simultaneously process wastewater, the return pipe 830 is provided to prevent excessive wastewater from entering the drum body 200 and affecting the filtration effect. The height of the return pipe 830 should be lower than the height of the sludge discharge pipe 600 to prevent wastewater from flowing into the sludge discharge pipe 600. When a connecting groove 500 is provided, the sludge discharge pipe 600 can communicate with the connecting groove 500, thereby ensuring that the sludge in the sludge discharge trough 300 is smoothly discharged from the sludge discharge pipe 600.

[0052] In this embodiment of the application, both the bottom of the feed hopper 810 and the drain hopper 860 are provided with a drain pipe 840, and the sludge discharge pipe 600 of the drum structure is connected to the outside of the box 870.

[0053] To facilitate the maintenance of the wastewater filtration device, a drain pipe 840 and a drain feed hopper 810 and a drain hopper 860 are installed to facilitate device maintenance.

[0054] Because the input end of the filter cleaning assembly 100 is connected to the drain pipe 850, the filter cleaning assembly 100 can effectively utilize the filtrate to clean the filter, avoiding the introduction of additional water sources and increasing the burden on wastewater treatment. In some embodiments of this application, such as Figure 8 As shown, the pipe body 113 of the first spray pipe 110 includes an outlet end 114 and an inlet end 111. The outlet end 114 is connected to the feed hopper, and the inlet end 111 is connected to the drain pipe 850. The cleaning liquid in the first spray pipe 110 can be directly drawn from the drain pipe 850, thereby achieving the reuse of the filtrate, avoiding the introduction of too much external liquid and increasing the filtrate volume, and also saving resources. The unused liquid in the first spray pipe 110 is directly discharged into the feed hopper 810 to continue participating in the filtration operation, avoiding additional waste liquid treatment procedures and effectively reducing the resource waste of this application.

[0055] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0056] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0057] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cleaning assembly for a filter screen, characterized in that, It includes several first spray pipes (110) and several second spray pipes (140), the first spray pipes (110) and the second spray pipes (140) are located on the outer side and the inner side of the filter screen, respectively, and the spraying direction of the first spray pipes (110) and the spraying direction of the second spray pipes (140) are both towards the filter screen.

2. A cleaning assembly for a filter screen according to claim 1, characterized in that, There are at least two first spray pipes (110), and the positions of the first spray pipes (110) aligned with the filter screen and the positions of the second spray pipes (140) aligned with the filter screen are staggered.

3. A cleaning assembly for a filter screen according to claim 2, characterized in that, The center of the cross section of each pair of adjacent first spray pipes (110) can be connected to the center of the cross section of a second spray pipe (140) to form an isosceles triangle.

4. A cleaning assembly for a filter screen according to any one of claims 1 to 3, characterized in that, The first spray pipe (110) includes a pipe body (113), on which a plurality of nozzles (112) are provided, the nozzles (112) facing the filter screen; the nozzles (112) of two adjacent first spray pipes (110) are arranged alternately.

5. A cleaning assembly for a filter screen according to claim 1, characterized in that, It also includes a base (130), which is fixed to the outside. Several suspension brackets (120) are provided on the base (130), and the first spray pipe (110) can be detachably fixed to the side of the suspension bracket (120).

6. A cleaning assembly for a filter screen according to claim 5, characterized in that, The suspension frame (120) includes a suspension plate (121), on which a carrier (122) is fixed. A first connector (123) is provided on one side of the carrier (122), and the carrier (122) is detachably and fixedly connected to the base (130) through the first connector (123). A second connector (124) is provided on the other side of the carrier (122), and the carrier (122) is detachably and fixedly connected to the first spray pipe (110) through the second connector (124).

7. A cleaning assembly for a filter screen according to claim 1, characterized in that, It also includes a support member (310) fixed to the outside, the support member (310) being used to support the suspension of the second spray pipe (140).

8. A rotating drum structure, characterized in that, The device includes a drum body (200), which has a hollow internal structure. A cleaning assembly (100) for a filter screen as described in any one of claims 1 to 6 is installed on the drum body (200). The first spray pipe (110) is located outside the drum body (200), and the second spray pipe (140) is located inside the drum body (200).

9. A drum structure according to claim 8, characterized in that, A mud discharge trough (300) is suspended inside the drum body (200), and the opening of the mud discharge trough (300) faces the cleaning assembly (100); And / or, the drum body (200) is provided with a plurality of sludge troughs (210), and the sludge troughs (210) are fixed to the inner wall of the drum body (200).

10. A wastewater filtration device, characterized in that, Includes a housing (870), in which a drum structure as described in claim 8 or 9 is installed, and at the bottom of the housing (870) are fixed an independent feed chamber (810) and a drain chamber (860), the feed chamber (810) being connected to the inside of the drum body (200), and the drain chamber (860) being connected to the outside of the drum body (200); The feed hopper (810) is provided with a feed pipe (820) and a return pipe (830). The height of the return pipe (830) is higher than the height of the feed pipe (820). The drain hopper (860) is provided with a drain pipe (850). The input end of the cleaning component (100) is connected to the drain pipe (850). The bottom of both the feed hopper (810) and the drain hopper (860) is provided with a drain pipe (840), and the sludge discharge pipe (600) of the drum structure is connected to the outside of the box (870).

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