A drum structure and sewage filtering device

Abstract

The utility model discloses a sewage treatment equipment field's kind of drum structure and sewage filtering device, wherein the drum structure includes the drum body and the sludge discharge groove, the drum body is the structure of inside hollow, the sludge discharge groove is located the drum body and is suspended and sets up, the sludge discharge groove is also along the drum body axial setting, the open mouth of sludge discharge groove faces upwards. Wherein the sewage filtering device includes the box, and the box is installed with the drum structure. The application utilizes the rotation of the drum body and the receiving of the sludge discharge groove to avoid the deposition of sludge and complete the continuous discharge of sludge.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment equipment, and in particular to a drum structure and a sewage 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] In existing technologies, rotary drum filters are typically used for solid-liquid separation of sludge. Ordinary rotary drum filters dewater the sludge by discharging the water and leaving the solids. After dewatering, the sludge settles at the bottom of the drum. Therefore, after processing one batch of sludge, the machine must be stopped and the sludge removed before the next batch can be processed, resulting in low sludge treatment efficiency.

[0004] Therefore, providing a rotary drum structure and wastewater filtration device for efficient dewatering and continuous sludge discharge of sludge is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This utility model discloses a drum structure and a sewage filtration device to solve the technical problem in related technologies where sludge is deposited at the bottom of the drum after dewatering, resulting in low sludge discharge efficiency.

[0006] To solve the above problems, the present invention adopts the following technical solution: In a first aspect, this application provides a drum structure, including a drum body and a mud discharge trough. The drum body is a hollow structure, and the mud discharge trough is located inside the drum body and suspended in the air. The mud discharge trough is also arranged along the axial direction of the drum body. The opening of the sludge discharge trough faces upwards.

[0007] Furthermore, a support member is provided on the sludge discharge trough, which is used to support the sludge discharge trough to be suspended in the body of the drum. The support member extends outside the body of the drum and is fixed to the outside.

[0008] Furthermore, the sludge discharge trough is inclined, and the height of the outlet of the sludge discharge trough is lower than the height of the sludge discharge trough furthest from the outlet.

[0009] Furthermore, the sludge discharge trough includes a trough body with its opening facing upwards, and the opening of the trough body gradually narrows from top to bottom; And / or, an inner spray pipe is provided above the sludge discharge trough, and a plurality of suspension arms are provided inside the sludge discharge trough. One end of the suspension arm is fixed to the inner spray pipe, and the other end is fixed to the support member.

[0010] Furthermore, the drum body is provided with several sludge tanks, which are fixed to the inner wall of the drum body.

[0011] Furthermore, the drum body includes a frame, which is formed by assembling several axial frame members and several circumferential ring members. The frame protrudes inward from the inner wall of the drum body, and the sludge trough is fixed to the side of the frame.

[0012] Furthermore, the opening of the sludge tank faces the rotation direction of the drum body.

[0013] Furthermore, the drum body includes a filter cylinder, which is formed by splicing together multiple filter plates, and the filter plates are detachably fixed to the frame of the drum body.

[0014] Furthermore, it also includes a sludge discharge pipe, wherein the outlet end of the sludge discharge trough is provided with a connecting groove, and the connecting groove is connected to and communicates with the sludge discharge pipe; A connecting hopper is provided between the connecting trough and the sludge discharge trough. One end of the connecting hopper is hinged to the sludge discharge trough, and the other end is hinged to the connecting trough. The connecting groove is fixed to the outside.

[0015] Secondly, this application provides a wastewater filtration device, including a housing, in which a drum structure as described in the first 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 chamber is equipped with a spraying mechanism, which is located above the drum body; The feeding hopper is equipped with a feeding pipe and a return pipe, the height of which is higher than that of the feeding pipe, and the drain hopper is equipped with a 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.

[0016] The technical solution adopted in this utility model can achieve the following beneficial effects: This application features a sludge discharge trough suspended within the drum body, with its opening facing upwards. Therefore, when the drum body rotates, the sludge discharge trough remains suspended and stationary. During this time, the sludge within the drum body is carried from the bottom to the top of the drum body via the inner wall. Under gravity, the sludge detaches from the inner wall and falls into the sludge discharge trough. This allows the drum body to transport and discharge sludge into the sludge discharge trough during rotation. The sludge discharge trough is axially positioned within the drum body, ensuring it can receive sludge axially, thus enhancing its efficiency. After entering the sludge discharge trough, it continuously exits the drum body along the trough. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the drum structure according to an embodiment of this application; Figure 2 This is an axial sectional view of the drum structure according to an embodiment of this application; Figure 3 This is a schematic diagram of the rotation direction of the drum structure according to an embodiment of this application; Figure 4 This is a schematic diagram of the drum structure and positioning component installation structure according to an embodiment of this application; Figure 5 This is a structural schematic diagram of the sludge discharge trough and support components according to an embodiment of this application; Figure 6 This is a side sectional view of the drum structure according to an embodiment of this application; Figure 7 This is a schematic diagram of the structure of a wastewater filtration device according to an embodiment of this application.

[0019] In the diagram: 100, Spraying mechanism; 200, Drum body; 210, Sludge tank; 220, Frame; 221, Frame body; 222, Ring body; 230, Filter screen cylinder; 231, Filter screen plate; 300, Sludge discharge tank; 310, Inner spray pipe; 320, Connecting hopper; 330, Suspension arm; 340, Tank body; 350, Support component; 400, Positioning component; 500, Connecting groove; 600, Sludge discharge pipe; 700, Rotation drive mechanism; 810, Feed hopper; 820, Feed pipe; 830, Return pipe; 840, Drainage pipe; 850, Drainage pipe; 860, Drainage hopper; 870, Box body. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] Current technologies for sludge dewatering using rotary drum structures typically employ a step-by-step operation. First, the drum structure is used to filter the water. During this process, solids deposit at the bottom of the drum due to gravity, and then the deposited sludge is cleaned off. This dewatering method not only significantly impacts filtration efficiency but also causes a substantial shift in the drum structure's center of gravity due to the deposited sludge, increasing the risk of mechanical damage during drum rotation.

[0023] The inventors observed that when the drum structure rotates, the inner wall of the drum structure carries some sludge with low water content towards the top of the drum structure. Therefore, the sludge is not stably deposited at the bottom of the drum body 200. Based on this, if the rotation of the drum structure can be used to collect the dewatered sludge and continuously discharge the dewatered sludge from the drum body 200, then the filtration efficiency can be improved while avoiding damage to the drum body 200.

[0024] The following is in conjunction with the appendix Figures 1 to 6 The present application provides a detailed description of a drum structure through specific embodiments and application scenarios.

[0025] See Figure 1 As shown in the figure, this application discloses a drum structure. The disclosed drum structure includes a drum body 200 and a mud discharge trough 300, wherein the drum body 200 is a hollow structure. The space inside the drum body 200 can accommodate the mud discharge trough 300, which is used to collect mud and discharge it from the drum body 200.

[0026] For some embodiments of this application, please refer to Figure 2 The sludge discharge trough 300 is located inside the drum body 200 and suspended in the air, and is also arranged along the axial direction of the drum body 200; the opening of the sludge discharge trough 300 faces upward. Since the sludge discharge trough 300 is suspended inside the drum body 200, it does not rotate with the drum body 200; it rotates around the sludge discharge trough 300 when the drum body 200 rotates. Because the opening of the sludge discharge trough 300 faces upward, it can effectively collect solids falling from above. When sewage is introduced into the drum body 200, the solids and liquids are separated. The separated solids have a lower water content but still contain some liquid and are in a flowable sludge state. When the sludge comes into contact with the inner wall of the drum body 200, it can adhere to the inner wall of the drum body 200 through its own viscosity. At this time, the drum body 200, by rotating, can carry the sludge towards the apex of the drum body 200. When the sludge is at the bottom of the drum body 200, its own gravity will not cause it to detach from the inner wall of the drum body 200. As the sludge approaches the top of the drum body 200, its own gravity gradually increases, affecting its adhesion to the inner wall of the drum body 200, thus causing the sludge to detach from the inner wall of the drum body 200 under the influence of gravity. After detaching from the inner wall of the drum body 200, the sludge will fall into the sludge discharge trough 300 within the drum body 200. The sludge discharge trough 300 collects the fallen sludge axially and discharges the sludge from the drum body 200.

[0027] In a preferred embodiment of this application, the axially arranged sludge discharge trough 300 can cover a larger area along the axis of the drum body 200, thereby increasing the receiving area for falling sludge. This embodiment utilizes the rotation of the drum body 200 and the viscosity of the sludge to effectively transport the sludge deposited at the bottom of the drum body 200 upwards, and uses the sludge's own weight to allow it to fall into the suspended sludge discharge trough 300. This achieves simultaneous solid-liquid separation and sludge discharge operations, avoiding frequent shutdowns for sludge cleaning, thus improving wastewater treatment efficiency.

[0028] In this embodiment, the drum body 200 can be driven to rotate by a handle, a crank-connecting rod mechanism, a motor, or as a rotation drive mechanism 700.

[0029] In some embodiments of this application, a support member 350 is provided on the sludge discharge trough 300. The support member 350 is used to support the sludge discharge trough 300 so that it is suspended within the drum body 200. By supporting the sludge discharge trough 300, the support member 350 keeps the sludge discharge trough 300 suspended within the drum body 200, thereby preventing the sludge discharge trough 300 from rotating with the drum body 200. In the embodiments of this application, the support member 350 can be separately provided from the sludge discharge trough 300, and the position of the sludge discharge trough 300 can be restricted by suspending the sludge discharge trough 300. During suspension, the support member 350 and the sludge discharge trough 300 can be connected in an intermittent manner; the support member 350 can also be integrally formed with the sludge discharge trough 300, thereby transferring the overall weight of the sludge discharge trough 300 to the support member 350. Therefore, the support 350 and the sludge discharge trough 300 can be connected intermittently or as a whole. The purpose is to keep the sludge trough 210 suspended within the drum body 200 while minimizing the impact on sludge collection.

[0030] In a preferred embodiment of this application, the support member 350 can take the form of a support frame, support plate, support rod, or support column, etc. The support member 350 extends outside the drum body 200 and is fixed externally, indicating that the support point of the support member 350 supporting the sludge discharge trough 300 is located outside the drum body 200. The support member 350 can be fixed using a separate external bracket or an internal bracket of the wastewater filtration device. This embodiment of the application enables the sludge discharge trough 300 to be suspended within the drum body 200 while ensuring that the support member 350 does not affect the rotation of the drum body 200.

[0031] For some embodiments of this application, please refer to Figure 6 The sludge discharge trough 300 is inclined, and the height of its outlet is lower than the height of its furthest point from the outlet. This inclination effectively enhances the sludge's resistance to friction, increasing its flow within the trough. When sludge falls from the inner wall of the drum body 200 into the trough, it is discharged outwards using gravity. Smaller sludge volumes may accumulate in the trough, mixing as it accumulates. This increased weight and the combined effect of gravity and the inclination angle enhances its flowability. Larger sludge volumes may also carry smaller sludge volumes with them during discharge.

[0032] In this embodiment of the application, please refer to Figure 5The sludge discharge trough 300 includes a trough body 340 with its opening facing upwards, gradually narrowing from top to bottom. There are three ways the opening of the trough body 340 narrows from top to bottom: First, the opening at both ends of the trough body 340 extends outwards and upwards at an angle, allowing for a larger axial carrying capacity and enabling the sludge to flow to the bottom of the trough body 340 via the inclined surface, thus preventing sludge near the ends of the drum body 200 from failing to collect and causing sedimentation. Second, the opening in the width direction of the trough body 340 extends outwards and upwards at an angle, helping the trough body 340 collect sludge over a larger lateral range and again enabling the sludge to flow to the bottom of the trough body 340 via the inclined surface. Third, a combination of the first and second methods is used to provide an even wider collection range for sludge collection.

[0033] In a preferred embodiment of this application, an inner spray pipe 310 is provided above the sludge discharge trough 300, and a plurality of suspension arms 330 are provided inside the sludge discharge trough 300. One end of each suspension arm 330 is fixed to the inner spray pipe 310, and the other end is fixed to a support member 350. In this embodiment, the inner spray pipe 310 provides a spraying effect to the sludge discharge trough 300 and the drum body 200, helping to improve the fluidity of the deposits attached to the drum body 200 and the solids in the sludge discharge trough 300, allowing the deposits to fall into the sludge discharge trough 300. The inner spray pipe 310 is connected to the outside of the drum body 200 to obtain a water supply. The support member 350 and the suspension arms 330 provide support for the inner spray pipe 310. Because the support point of the support member 350 is located outside the drum body 200, the mud discharge trough 300 is mainly raised by the support member 350 under the support of the support point inside the drum body 200. However, this raised support method has low stability because the torque generated at the position of the mud discharge trough 300 further away from the support point is greater, and simply using the raised method can easily cause the whole structure to become unstable due to the downward pressure at the end. In this embodiment, a suspension arm 330 is set to form a triangular support structure between the suspension arm 330, the support member 350 and the mud discharge trough 300, thereby improving the overall stability of the structure. The inner spray pipe 310 and the support member 350 are connected by the suspension arm 330, so the mud discharge trough 300 achieves improved structural stability in the extension direction through the suspension arm 330 and the inner spray pipe 310, reducing the risk of deformation caused by the increase in torque, thereby avoiding the downward pressure at the end of the mud discharge trough 300 from damaging the support stability of the support member 350. When the sludge discharge trough 300 receives sludge, local pressure may increase. At this time, the support 350, the suspension arm 330 and the inner spray pipe 310 maintain a triangular structural relationship, which improves the overall integrity. They can effectively prevent the support 350 from deforming due to changes in torque under pressure through mutual traction, thereby preventing damage to the support connection position of the support 350.

[0034] Please see Figure 4 In this embodiment, a positioning element 400 is provided. The positioning element 400 is used to limit the support element 350, thereby ensuring that the support element 350 can effectively support the suspended state of the sludge discharge trough 300. The positioning element 400 can be connected to the support element 350 by clamping, clamping, plugging or fixing. The positioning element 400 can be an external bracket or directly connected to the sewage filtration equipment, thereby using the structure outside the drum body 200 to provide support for the support element 350. The setting of the positioning element 400 can not only increase the contact area between the support element 350 and the outside, but also expand the fixing methods between the support element 350 and the outside, thereby ensuring the stability of the support element 350 when supporting the sludge discharge trough 300.

[0035] In this embodiment, the drum body 200 is provided with a plurality of sludge troughs 210, which are fixed to the inner wall of the drum body 200. The sludge troughs 210 located within the drum body 200 can rotate with the drum body 200. When the sludge troughs 210 rotate to the bottom of the drum body 200, they can contain the sludge. During upward rotation, the sludge troughs 210 restrict the sludge, preventing it from flowing back to the bottom of the drum body 200. When the sludge troughs 210 rotate to the upper part of the drum body 200, their restrictive effect on the sludge gradually weakens, and the sludge gradually flows out of the sludge troughs 210 and falls into the sludge discharge trough 300. When the sludge trough 210 rotates to a position where its opening is directly opposite the open sludge discharge trough 300, the sludge trough 210 completely loses its restraining effect on the sludge, thus allowing the sludge trough 210 to pour the sludge into the sludge discharge trough 300 and complete the sludge discharge operation.

[0036] The sludge trough 210 in this embodiment can be any type of trough, such as a plate or a linear trough. It is only necessary to ensure that during the rotation of the sludge trough 210, the opening of the sludge trough 210 is open and directly faces the sludge discharge trough 300.

[0037] In this embodiment, the sludge trough 210 can be set continuously or intermittently, or it can be scattered within the drum body 200. The orientation of the sludge trough 210 can be along the axial direction of the drum body 200 or at an angle to the axial direction of the drum body 200, but it is necessary to ensure that the sludge trough 210 can carry sludge and put it into the sludge discharge trough 300 during rotation.

[0038] In this embodiment, the drum body 200 includes a frame 220, which is formed by assembling a plurality of axial frame members 221 and a plurality of circumferential ring members 222. The frame 220 of the drum body 200 forms a frame structure through the axial frame members 221 and the circumferential ring members 222, thereby providing morphological support for the drum body 200.

[0039] The frame 221 protrudes inward from the inner wall of the drum body 200, and the sludge tank 210 is fixed to the side of the frame 221. The sludge tank 210 needs to undertake part of the task of transporting sludge, so the sludge tank 210 needs to have sufficient load-bearing capacity during rotation. However, it is difficult for the sludge tank 210, which exists independently, to improve its own load-bearing capacity. Therefore, in this embodiment, the frame 220 is used to provide support for the sludge tank 210, thereby enhancing the load-bearing capacity of the sludge tank 210.

[0040] For some embodiments of this application, please refer to Figure 3 The opening of the sludge trough 210 faces the rotation direction of the drum body 200. When the opening of the sludge trough 210 faces the rotation direction of the drum body 200, it can effectively collect sludge during rotation and improve the sludge carrying capacity. The sludge trough 210 can adopt an "L-shaped" plate. One side of the "L-shaped" plate is fixed to the frame 221, and the other side is parallel to the inner wall of the drum. Thus, the two sides of the "L-shaped" plate and the inner wall of the drum form a semi-enclosed structure. The semi-enclosed structure can effectively accommodate the sludge entering and restrict the flow of the sludge after it enters. When the "L-shaped" plate rotates to the point where the sludge inside the semi-enclosed structure flows outward, the outflowing sludge can fall into the sludge discharge trough 300, thereby improving the sludge transportation efficiency.

[0041] In this embodiment, the drum body 200 includes a filter cylinder 230, which is formed by splicing together multiple filter plates 231. The filter plates 231 are detachably fixed to the frame 220 of the drum body 200. Since the filter plates 231 are spliced ​​together, each filter plate 231 is an independent functional area. Different functions can be achieved by replacing the filter plates 231. For example, when it is necessary to set the filter plates 231 at intervals to control the water filtration speed, some filter plates 231 can be replaced with solid plates. More importantly, the spliced ​​filter plates 231 not only form a complete filter cylinder 230, but also ensure the normal use of the filter cylinder 230 as a whole by replacing the damaged filter plates 231 when there is partial blockage or damage. In contrast, the prior art can usually only scrap the filter cylinder 230 or remove it as a whole for partial repair. Compared with the prior art, the filter cylinder 230 of this embodiment has higher maintenance efficiency and longer service life.

[0042] In this embodiment of the application, please refer to Figure 1It also includes a sludge discharge pipe 600, and a connecting groove 500 at the outlet end of the sludge discharge trough 300, which connects to and communicates with the sludge discharge pipe 600. The transition through the connecting groove 500 makes the connection between the sludge discharge trough 300 and the sludge discharge pipe 600 smoother and more adaptable to the layout position of the sludge discharge pipe 600.

[0043] A connecting hopper 320 is provided between the connecting groove 500 and the sludge discharge trough 300. One end of the connecting hopper 320 is hinged to the sludge discharge trough 300, and the other end is hinged to the connecting groove 500. The connecting groove 500 is fixed to the outside. The fixing of the connecting groove 500 to the outside provides a load-bearing support position, thereby enabling the support member 350 to better support the sludge discharge trough 300. The connecting groove 500 itself can also be used as part of the support member 350, which improves the load-bearing capacity and increases the utilization rate of the connecting groove 500. Please refer to [link / reference]. Figure 4 During this process, the positioning element 400 can be used to clamp the connecting groove 500, so that the top, bottom and side surfaces of the connecting groove 500 can all bear force, thereby enhancing the load-bearing capacity of the connecting groove 500 when supporting the sludge discharge trough 300.

[0044] For some embodiments of this application, please refer to Figure 6 The connecting hopper 320 serves as an intermediate connector between the connecting trough 500 and the sludge discharge trough 300. It maintains a certain degree of mobility between the connecting hopper 320 and the sludge discharge trough 300 through a hinged connection, and also maintains a certain degree of mobility between the connecting hopper 320 and the connecting trough 500 through its connection with the connecting trough 500. Since the drum body 200 vibrates during rotation, the mobility at both ends of the connecting hopper 320 prevents vibration from disrupting the connection stability. The sludge discharge trough 300, when subjected to vibration, also facilitates the flow of sludge discharge.

[0045] In this embodiment, wastewater containing sludge is introduced into the drum body 200 during actual operation. As the drum body 200 rotates, it discharges the liquid portion and leaves the sludge, which settles at the bottom of the drum body 200 under gravity. During rotation, the drum body 200 uses its inner wall and sludge trough 210 to carry the sludge towards its apex. The sludge then falls into the sludge discharge trough 300 suspended within the drum body 200 under its own weight. Because the sludge discharge trough 300 is inclined, the sludge is discharged from the drum body 200 into the connecting hopper 320, and then pushed into the connecting groove 500 by subsequent sludge compression. From the connecting groove 500, the sludge is transported to the sludge discharge pipe 600 and discharged from the wastewater filtration device.

[0046] The following is in conjunction with the appendix Figure 7 The wastewater filtration device provided in this application will be described in detail through specific embodiments and application scenarios.

[0047] See Figure 7 This application discloses a wastewater filtration device, including a housing 870. A rotating drum structure according to the first 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 separated to avoid 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.

[0048] 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.

[0049] The housing 870 is equipped with a spraying mechanism 100, which is located above the drum body 200. In this embodiment, the spraying mechanism 100 is used to spray the drum body 200 to avoid clogging of the filter screen on the drum body 200, and at the same time, it can ensure that the sludge in the sludge discharge trough 300 has fluidity, so that the sludge can flow out from the sludge trough 210.

[0050] In this embodiment, 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. Since the capacity of the drum body 200 to accommodate and process wastewater simultaneously is limited, 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] The above description is only a specific embodiment of this utility model, but the protection scope of this 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A drum structure, characterized by It includes a drum body (200) and a mud discharge trough (300). The drum body (200) has a hollow internal structure. The mud discharge trough (300) is located inside the drum body (200) and is suspended in the air. The mud discharge trough (300) is also arranged along the axial direction of the drum body (200). The opening of the mud discharge trough (300) faces upward.

2. A drum structure according to claim 1, characterized in that A support member (350) is provided on the mud discharge trough (300). The support member (350) is used to support the mud discharge trough (300) to be suspended inside the drum body (200). The support member (350) extends to the outside of the drum body (200) and is fixed to the outside.

3. The drum structure according to claim 2, characterized in that, The sludge discharge trough (300) is inclined, and the height of the outlet of the sludge discharge trough (300) is lower than the height of the sludge discharge trough (300) away from the outlet.

4. The drum structure according to claim 2, characterized in that, The sludge discharge trough (300) includes a trough body (340), the opening of the trough body (340) faces upward, and the opening of the trough body (340) gradually narrows from top to bottom; And / or, an inner spray pipe (310) is provided above the sludge discharge trough (300), and a plurality of suspension arms (330) are provided inside the sludge discharge trough (300). One end of the suspension arm (330) is fixed to the inner spray pipe (310), and the other end is fixed to the support member (350).

5. A drum structure according to claim 1, wherein 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).

6. A drum structure according to claim 5, characterized in that, The drum body (200) includes a frame (220), which is formed by a number of axial frames (221) and a number of circumferential rings (222). The frame (221) protrudes inward from the inner wall of the drum body (200), and the sludge tank (210) is fixed to the side of the frame (221).

7. A drum structure according to claim 5, characterized in that, The opening of the sludge tank (210) is oriented toward the rotation direction of the drum body (200).

8. A drum structure according to any one of claims 1 to 7, characterized in that, The drum body (200) includes a filter cylinder (230), which is formed by splicing together multiple filter plates (231), and the filter plates (231) are detachably fixed to the frame (220) of the drum body (200).

9. A drum structure according to claim 1, wherein It also includes a sludge discharge pipe (600), and the outlet end of the sludge discharge trough (300) is provided with a connecting groove (500), which connects and communicates with the sludge discharge pipe (600). A connecting hopper (320) is provided between the connecting groove (500) and the sludge discharge groove (300). One end of the connecting hopper (320) is hinged to the sludge discharge groove (300), and the other end is hinged to the connecting groove (500). The connecting groove (500) is fixed to the outside.

10. A sewage filtering device, characterized by The device includes a housing (870), in which a drum structure according to any one of claims 1 to 9 is installed. 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 drum body (200), and the drain chamber (860) is connected to the outside of the drum body (200). The housing (870) is equipped with a spraying mechanism (100), which is located above 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), and the drain hopper (860) is provided with a 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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