Unpowered high-density settling pond scum cleaning system

Abstract

The invention discloses an unpowered high-density settling pond scum cleaning system which comprises a scum collecting tank, a scum conveying pipe and a collecting mechanism, the scum collecting tank is arranged in a settling pond transition area, the top elevation of the scum collecting tank is 50-150mm lower than the liquid level elevation of the settling pond transition area, the length direction of the scum collecting tank is parallel to the width direction of the settling pond transition area, and the scum conveying pipe is arranged in the settling pond transition area. The slag collecting tank extends from one side of a transition area of the sedimentation tank to the other side of the transition area of the sedimentation tank, a guide air cushion is arranged at the bottom of the slag collecting tank and comprises a cushion body and a plurality of guide plates, the cushion body is arranged at the bottoms of the guide plates, the guide plates are arranged on the cushion body in a linear mode, and the guide plates are arranged on the cushion body in a linear mode. The multiple guide plates are obliquely arranged in the direction of the position where the slag conveying pipe is located, the slag conveying pipe is connected with one end of the slag collecting groove, and the collecting mechanism is connected to the end of the slag conveying pipe in a bearing mode. Compared with the prior art, scum can be efficiently removed.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, in particular to an unpowered high-density sedimentation tank scum cleaning system. Background Art

[0002] High-density sedimentation tank is a sewage treatment technology that integrates mixing, flocculation, sedimentation, and sludge concentration. The sewage first enters the mixing zone, and under the action of mechanical stirring, the added coagulant and sewage are quickly and fully mixed. Then the sewage enters the flocculation zone from the bottom center through the pipeline. The flocculation zone is equipped with a guide tube and a flocculation mixer. The sewage, flocculant, and high-concentration return sludge are fully and evenly stirred through internal reflux in the flocculation zone, and a flocculation reaction occurs to form dense alum flakes. Then the sewage flows from the transition zone into the sedimentation zone. An inclined plate (or inclined tube) is set at the top of the sedimentation zone to separate the sewage into solids and liquids, and a sludge concentrator is set at the bottom to concentrate the sludge.

[0003] The high-density sedimentation tank has the following main advantages: ① The generated alum flowers are very dense and can be quickly separated from the clean water, and the effluent water quality is stable and excellent; ② The rising flow rate in the sedimentation tank area is very high, which can save a lot of system floor space; ③ The use of high-efficiency agitators greatly reduces input energy consumption; ④ The sludge concentration is high, which effectively reduces the sludge discharge; ⑤ By adjusting the sludge return volume and stirring intensity, the impact of fluctuations in incoming water quality and treated water volume can be effectively reduced, and the ability to resist shock loads is strong.

[0004] High-density sedimentation tanks have been widely promoted and used due to the above technical advantages, but there are still some technical problems to be optimized in the actual operation process. Due to the particularity of water quality, poor front-end process treatment effect, sludge anaerobic fermentation, uneven quality of flocculants, uneven mixing of flocculants and sewage, improper control of sludge return ratio, and high-density sedimentation tank design flow state and other factors, scum will be generated in high-density sedimentation tanks, and it is particularly serious in the transition zone from the flocculation zone to the sedimentation tank zone. Excessive accumulation of scum not only directly affects the effluent water quality, but also greatly affects the visual effect. High-density sedimentation tanks usually do not have an automatic scum cleaning system, and generally rely on manpower to clean the pool surface, which is not only labor-intensive, but also not clean enough.

[0005] In view of this, a non-powered high-density sedimentation tank scum cleaning system is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a non-powered high-density sedimentation tank scum cleaning system, which can efficiently remove the scum.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions:

[0008] A non-powered high-density sedimentation tank scum cleaning system comprises a slag collecting trough, a slag conveying pipe and a collecting mechanism, wherein the slag collecting trough is arranged in a transition zone of the sedimentation tank, and the top elevation of the slag collecting trough is 50-150 mm lower than the liquid level elevation of the transition zone of the sedimentation tank, the length direction of the slag collecting trough is parallel to the width direction of the transition zone of the sedimentation tank, the slag collecting trough extends from one side of the transition zone of the sedimentation tank to the other side, a guide air cushion is arranged at the bottom of the slag collecting trough, the guide air cushion comprises a cushion body and a plurality of guide plates, the cushion body is arranged at the bottom of the guide plate, a plurality of the guide plates are arranged in a straight line on the cushion body, a plurality of the guide plates are arranged obliquely toward the direction of the position of the slag conveying pipe, the slag conveying pipe is connected to one end of the slag collecting trough, and the collecting mechanism is connected to the end of the slag conveying pipe.

[0009] In a preferred embodiment, it further comprises a first waterproof casing, wherein the first waterproof casing connects the slag collecting trough and the slag conveying pipe.

[0010] In a preferred embodiment, it also includes a pipe support, the slag conveying pipe includes a horizontal section and a vertical section connected to each other, the horizontal section is connected to the slag collecting trough, the collecting mechanism is supported below the vertical section, and the pipe support fixes the slag conveying pipe to the wall of the sedimentation tank.

[0011] In a preferred embodiment, the slope of the slag collecting trough is greater than 5%.

[0012] In a preferred embodiment, a slag discharge valve is provided at the bottom of the slag conveying pipe.

[0013] In a preferred embodiment, the collection mechanism includes a scum filter basket, a filtrate well and a filtrate discharge pipe. The filtrate well is provided with a grille cover plate, the grille cover plate is 100-200 mm above the floor, the scum filter basket is arranged on the grille cover plate, the sieve hole of the scum filter basket is 20-30 mesh, and the filtrate discharge pipe is connected to the filtrate well.

[0014] In a preferred embodiment, the distance between the top of the slag filter basket and the end of the slag conveying pipe is 100-200 mm.

[0015] In a preferred embodiment, the slag collecting tank and the sedimentation tank are built together.

[0016] In a preferred embodiment, the diameter of the slag conveying pipe is set to DN200.

[0017] In a preferred embodiment, the width of the slag collecting trough is set to 300-600 mm, and the height is set to 300-600 mm.

[0018] In a preferred embodiment, the lower side surface of the guide plate is configured as a curved surface.

[0019] In a preferred embodiment, a butt block is provided at one end of the cushion body away from the slag conveying pipe, and the butt block butts against the guide plate adjacent thereto, so that the guide plate is inclined, and the guide air cushion is made of rubber material, and the thickness of the guide air cushion is set to 1-5 cm.

[0020] Compared with the prior art, the present invention provides a non-powered high-density sedimentation tank slag cleaning system including a slag collecting trough, a slag conveying pipe and a collecting mechanism. The slag collecting trough is arranged in the transition zone of the sedimentation tank, and the top elevation is 50-150 mm lower than the liquid level elevation of the transition zone of the sedimentation tank. Its length direction is parallel to the width direction of the transition zone of the sedimentation tank, and extends from one side of the transition zone of the sedimentation tank to the other side. A guide air cushion is provided at the bottom of the slag collecting trough, and the guide air cushion includes a cushion body and a plurality of guide plates. The cushion body is arranged at the bottom of the guide plate, and the plurality of guide plates are arranged on the cushion body in a straight line and are inclined in the direction of the position of the slag conveying pipe. The slag conveying pipe is connected to one end of the slag collecting trough, and the collecting mechanism is connected to the end of the slag conveying pipe.

[0021] The system has the following significant technical effects:

[0022] First, the effective collection and discharge of scum in high-density sedimentation tanks is achieved. The special position and structural design of the scum collecting trough enable it to naturally collect scum under the action of water flow. The top elevation is lower than the liquid level elevation in the transition zone of the sedimentation tank, making it easier for the scum to flow into the scum collecting trough. The guide plate of the guide air cushion is tilted toward the location of the scum conveying pipe to ensure that the scum can only flow in one direction toward the scum conveying pipe, achieving efficient scum conveying. At the same time, because the guide air cushion is soft, when the guide plate is affected by the force of the scum, it will swing, and the force of the guide plate in one area will be transmitted to the guide plates in other areas, thereby driving the guide plate to swing. This swing is similar to the effect of vibration, which has a disturbing effect on the accumulated scum, allowing the scum to be smoothly transported.

[0023] Secondly, it is simple, convenient, economical and practical. The entire cleaning system does not require power drive, and can complete the collection and discharge process of scum only by relying on water gravity. This not only reduces the operating cost of the equipment, but also reduces energy consumption, meeting the requirements of energy conservation and environmental protection. The system has a simple structure, is easy to install and maintain, does not require complex operations and technical support, and greatly improves the practicality and reliability of the system.

[0024] Furthermore, the effluent quality of the high-density sedimentation tank is guaranteed. Timely cleaning of scum can effectively avoid the impact of scum on effluent quality. Excessive scum will reduce the clarity of effluent and may even carry harmful substances, affecting water quality safety. Through this cleaning system, scum can be cleaned quickly and effectively to ensure stable and excellent effluent quality to meet the requirements of sewage treatment.

[0025] At the same time, it greatly improves the visual effect of the high-density sedimentation tank. The accumulation of scum will give people a feeling of untidiness and unsanitaryness, affecting the overall appearance of the sedimentation tank. The cleaning system can clean the scum in time, keep the sedimentation tank clean and tidy, improve the visual effect of the sewage treatment facility, and help improve the public's recognition of sewage treatment work.

[0026] Finally, the intensity of manual operation is greatly reduced. Compared with the traditional manual cleaning method, the unpowered cleaning system can automatically collect and discharge the scum, greatly reducing the workload of manual operation. The staff does not need to do heavy cleaning work on the pool surface, but only needs to regularly maintain and clean the collection mechanism, which reduces labor intensity and improves work efficiency.

[0027] In summary, the unpowered high-density sedimentation tank scum cleaning system achieves effective collection and discharge of high-density sedimentation tank scum through ingenious structural design. It has many advantages such as simplicity and convenience, economy and practicality, ensuring effluent water quality, improving visual effects and reducing manual operation intensity, etc., which provides strong support for the stable operation and efficient treatment of high-density sedimentation tanks. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention relates to a plan view of a sedimentation tank to which an unpowered high-density sedimentation tank scum cleaning system is applied.

[0029] Figure 2 yes Figure 1 Schematic diagram of AA.

[0030] Figure 3 yes Figure 1 Schematic diagram of BB.

[0031] Figure 4 Figure 3 Schematic diagram of the enlarged structure of part A.

[0032] In the picture

[0033] Slag collecting trough 1; slag conveying pipe 2; first waterproof casing 3; pipeline support 4; slag discharge valve 5; slag filter basket 6; filtrate well 7; grid cover plate 8; filtrate discharge pipe 9; second waterproof casing 10; guide air cushion 11; cushion body 12; guide plate 13; top block 14. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0035] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0036] like Figures 1 to 4 As shown, a non-powered high-density sedimentation tank scum cleaning system includes a slag collecting trough 1, a slag conveying pipe 2 and a collecting mechanism, wherein the slag collecting trough 1 is arranged in the transition zone of the sedimentation tank, and the top elevation of the slag collecting trough 1 is 50-150 mm lower than the liquid level elevation of the transition zone of the sedimentation tank, the length direction of the slag collecting trough 1 is parallel to the width direction of the transition zone of the sedimentation tank, the slag collecting trough 1 extends from one side of the transition zone of the sedimentation tank to the other side, a guide air cushion 11 is provided at the bottom of the slag collecting trough 1, the guide air cushion 11 includes a cushion body 12 and a plurality of guide plates 13, the cushion body 12 is arranged at the bottom of the guide plate 13, a plurality of the guide plates 13 are arranged on the cushion body 12 in a straight line, and a plurality of the guide plates 13 are inclined toward the direction of the position of the slag conveying pipe 2, the slag conveying pipe 2 is connected to one end of the slag collecting trough 1, and the collecting mechanism is connected to the end of the slag conveying pipe 2.

[0037] A non-powered high-density sedimentation tank scum cleaning system of this embodiment includes a slag collecting trough 1, a slag conveying pipe 2 and a collecting mechanism. The slag collecting trough 1 is arranged in the transition zone of the sedimentation tank, and the top elevation is 50-150mm lower than the liquid level elevation of the transition zone of the sedimentation tank. Its length direction is parallel to the width direction of the transition zone of the sedimentation tank, and extends from one side of the transition zone of the sedimentation tank to the other side. A guide air cushion 11 is provided at the bottom of the slag collecting trough 1. The guide air cushion 11 includes a cushion body 12 and a plurality of guide plates 13. The cushion body 12 is arranged at the bottom of the guide plate 13. The plurality of guide plates 13 are arranged on the cushion body 12 in a straight line and are inclined in the direction of the position of the slag conveying pipe 2. The slag conveying pipe 2 is connected to one end of the slag collecting trough 1, and the collecting mechanism is connected to the end of the slag conveying pipe 2.

[0038] The system has the following significant technical effects:

[0039] First, the effective collection and discharge of scum in high-density sedimentation tanks is achieved. The special position and structural design of the slag collecting tank 1 enable it to naturally collect scum under the action of water flow. The top elevation is lower than the liquid level elevation in the transition zone of the sedimentation tank, making it easier for the scum to flow into the slag collecting tank 1. The guide plate 13 of the guide air cushion 11 is inclined toward the location of the slag conveying pipe 2 to ensure that the scum can only flow in one direction toward the slag conveying pipe 2, thereby achieving efficient slag conveying. At the same time, since the guide air cushion 11 is soft, when the guide plate 13 is acted upon by the force of the scum, it will swing, and the force of the guide plate 13 in one area will be transmitted to the guide plates 13 in other areas, thereby driving the guide plate 13 to swing. This swing is similar to the effect of vibration, which has a disturbing effect on the accumulated scum, allowing the scum to be smoothly transported.

[0040] Secondly, it is simple, convenient, economical and practical. The entire cleaning system does not require power drive, and can complete the collection and discharge process of scum only by relying on water gravity. This not only reduces the operating cost of the equipment, but also reduces energy consumption, meeting the requirements of energy conservation and environmental protection. The system has a simple structure, is easy to install and maintain, does not require complex operations and technical support, and greatly improves the practicality and reliability of the system.

[0041] Furthermore, the effluent quality of the high-density sedimentation tank is guaranteed. Timely cleaning of scum can effectively avoid the impact of scum on effluent quality. Excessive scum will reduce the clarity of effluent and may even carry harmful substances, affecting water quality safety. Through this cleaning system, scum can be cleaned quickly and effectively to ensure stable and excellent effluent quality to meet the requirements of sewage treatment.

[0042] At the same time, it greatly improves the visual effect of the high-density sedimentation tank. The accumulation of scum will give people a feeling of untidiness and unsanitaryness, affecting the overall appearance of the sedimentation tank. The cleaning system can clean the scum in time, keep the sedimentation tank clean and tidy, improve the visual effect of the sewage treatment facility, and help improve the public's recognition of sewage treatment work.

[0043] Finally, the intensity of manual operation is greatly reduced. Compared with the traditional manual cleaning method, the unpowered cleaning system can automatically collect and discharge the scum, greatly reducing the workload of manual operation. The staff does not need to do heavy cleaning work on the pool surface, but only needs to regularly maintain and clean the collection mechanism, which reduces labor intensity and improves work efficiency.

[0044] In summary, the unpowered high-density sedimentation tank scum cleaning system achieves effective collection and discharge of high-density sedimentation tank scum through ingenious structural design. It has many advantages such as simplicity and convenience, economy and practicality, ensuring effluent water quality, improving visual effects and reducing manual operation intensity, etc., which provides strong support for the stable operation and efficient treatment of high-density sedimentation tanks.

[0045] Furthermore, in the configuration of this embodiment, the configuration of the guide air cushion 11 has outstanding technical effects, which are specifically shown as follows:

[0046] 1. Guide the scum to flow in a directional manner

[0047] One-way flow

[0048] The multiple guide plates 13 in the guide air cushion 11 are arranged in a straight line on the cushion body 12 and are inclined toward the location of the slag conveying pipe 2. This specific inclined setting allows the slag to flow only in one direction toward the location of the slag conveying pipe 2 under the action of water flow and its own gravity.

[0049] When scum is generated in the transition zone of the sedimentation tank and moves with the water flow, it encounters the guide air cushion 11. Due to the guidance of the guide plate 13, the scum will be accurately guided to the direction of the scum conveying pipe 2, avoiding the scum from running around in the scum collecting tank 1, ensuring the high efficiency of scum collection.

[0050] Improve slag conveying efficiency

[0051] The one-way flow guide design of the guide air cushion 11 greatly improves the efficiency of slag conveying. The slag can be quickly conveyed to the slag conveying pipe 2, reducing the residence time of the slag in the slag collecting tank 1, thereby reducing the possibility of the slag spreading or settling again.

[0052] Compared with the conventional slag collecting trough 1 without a guide device, this design can collect and transport more slag in a shorter time, thereby improving the working efficiency of the entire cleaning system.

[0053] 2. Generate disturbance to prevent blockage

[0054] Disturbance Effects Caused by Elastic Swings

[0055] The guide air cushion 11 is soft, and when the guide plate 13 is subjected to the force of the slag, it will swing. This swing is similar to a vibration effect, which produces a disturbing effect on the slag gathered in the slag collecting tank 1.

[0056] When the scum gradually accumulates in the scum collecting tank 1, the scum may stick to each other or settle. The swing of the guide plate 13 can break the sticking and settling, so that the scum always remains in a loose state for easy transportation.

[0057] Transmit force to achieve comprehensive disturbance

[0058] The force of the guide plates 13 in one area is transmitted to the guide plates 13 in other areas, so that the guide plates 13 on the entire guide air cushion 11 swing. This force transmission mechanism enables the slag in the slag collecting tank 1 to be fully disturbed.

[0059] No matter where the slag is in the slag collecting tank 1, it can be disturbed by the swing of the guide plate 13, thus avoiding the situation where local slag is accumulated and cannot be cleaned.

[0060] The non-powered high-density sedimentation tank scum cleaning system of the embodiment further includes a first waterproof sleeve 3, which connects the scum collecting tank 1 and the scum conveying pipe 2. The first waterproof sleeve 3 connects the scum collecting tank 1 and the scum conveying pipe 2, effectively preventing leakage at the connection, preventing sewage from seeping out and affecting surrounding facilities and the working environment, ensuring stable operation of the system, extending the service life of the equipment, and ensuring smooth and unobstructed scum conveying.

[0061] The non-powered high-density sedimentation tank scum cleaning system of this embodiment also includes a pipe support 4, the scum conveying pipe 2 includes a horizontal section and a vertical section connected to each other, the horizontal section is connected to the scum collecting tank 1, the collecting mechanism is connected to the bottom of the vertical section, and the pipe support 4 fixes the scum conveying pipe 2 to the wall of the sedimentation tank, and the net distance between the scum conveying pipe 2 and the wall is 300-500mm. The setting of the pipe support 4 can stably fix the scum conveying pipe 2 to the wall of the sedimentation tank, ensuring that the scum conveying pipe 2 will not be displaced or shaken during operation due to factors such as water flow impact and equipment vibration, thereby ensuring the continuity and stability of scum conveying. Secondly, the clear distance between the slag conveying pipe 2 and the pool wall is 300-500mm, which not only avoids the wear or collision damage caused by direct contact between the slag conveying pipe 2 and the pool wall, but also provides sufficient operating space for pipeline maintenance and inspection, making it convenient for staff to carry out daily inspections, clear blockages and other operations, effectively improving the reliability, maintainability and operating efficiency of the entire slag cleaning system, reducing system downtime caused by pipeline failures, and ensuring the normal operation of the sedimentation tank.

[0062] The slope of the slag collecting tank 1 is greater than 5%, and is set to 5% in this embodiment. The slope allows the slag in the slag collecting tank 1 to flow more smoothly toward the slag conveying pipe 2 under the action of water flow and its own gravity. A larger slope can effectively speed up the flow rate of the slag, reduce the residence time of the slag in the slag collecting tank 1, reduce the risk of slag accumulation and blockage, and improve the slag collection efficiency. At the same time, a reasonable slope design helps to maintain a stable slag conveying state under unpowered conditions, ensure the continuous operation of the entire slag cleaning system, avoid the accumulation of slag due to insufficient slope, which affects the effluent water quality and system perception, and ensure the efficient and stable operation of the high-density sedimentation tank.

[0063] A slag discharge valve 5 is provided at the bottom of the slag conveying pipe 2, and the slag discharge valve 5 can be a butterfly valve, a gate valve or a ball valve. Preferably, the slag discharge valve 5 can be manually controlled, pneumatically controlled or electrically controlled. The slag discharge valve 5 can accurately control the timing and flow rate of slag discharge. By manipulating the slag discharge valve 5, the slag discharge can be achieved with the help of water gravity. The butterfly valve, gate valve and ball valve each have their own characteristics and can adapt to different working conditions. Manual control is simple and direct, while pneumatic and electric control are convenient for remote or automated operation, which enhances the flexibility and controllability of the system, ensures that the slag cleaning is carried out in an orderly and efficient manner, and improves the operational stability of the sedimentation tank.

[0064] The collection mechanism includes a scum filter basket 6, a filtrate well 7 and a filtrate discharge pipe 9. The filtrate well 7 is provided with a grille cover 8, which is 100-200 mm above the floor. The scum filter basket 6 is arranged on the grille cover 8. The sieve holes of the scum filter basket 6 are 20-30 meshes and are made of stainless steel. The filtrate discharge pipe 9 is connected to the filtrate well 7. The scum filter basket 6 can effectively intercept the scum discharged from the scum conveying pipe 2. Its 20-30 mesh sieve holes can accurately filter. The stainless steel material is durable and corrosion-resistant. The grille cover 8 is 100-200 mm above the floor, which can prevent the ground sewage from backflowing into the filtrate well 7, and at the same time provide a stable placement platform for the scum filter basket 6. The filtrate well 7 collects the filtered filtrate and discharges it in an orderly manner through the filtrate discharge pipe 9 to prevent the filtrate from flowing randomly and polluting the environment. The overall collection mechanism is reasonably designed to ensure good solid-liquid separation during the scum cleaning process, maintain a clean surrounding environment, and improve the reliability and practicality of the entire unpowered high-density sedimentation tank scum cleaning system.

[0065] The filtrate well 7 is an underground reinforced concrete structure, which is built with the same wall as the sedimentation tank. The reinforced concrete structure gives it good compressive resistance and durability, and can stably carry the filtrate for a long time. Building with the same wall as the sedimentation tank saves construction space and optimizes the overall layout on the one hand, and reduces construction costs and construction period on the other hand. At the same time, it is convenient for the coordinated operation such as pipeline connection between the two, and improves the economy and operation convenience of the non-powered high-density sedimentation tank scum cleaning system.

[0066] The distance between the top of the scum filter basket 6 and the end of the scum conveying pipe 2 is 100-200mm. The distance between the top of the scum filter basket 6 and the end of the scum conveying pipe 2 is 100-200mm, so that the scum can fall smoothly into the filter basket under the action of gravity, avoiding the scum blocking the outlet of the scum conveying pipe 2 due to too close distance or damaging the filter basket due to excessive impact. Reasonable spacing provides a buffer space for the scum, ensuring that the scum enters the collection link in an orderly manner, and improving the stability and effectiveness of scum collection.

[0067] The slag collecting tank 1 is made of reinforced concrete structure and is built together with the sedimentation tank. The reinforced concrete structure is strong and durable, and can withstand the long-term scouring and corrosion of sewage and slag, ensuring the structural stability of the slag collecting tank 1. The combined construction method saves floor space, optimizes the overall layout, reduces construction costs and construction period, and is conducive to the connection with the internal water flow of the sedimentation tank, ensuring the efficiency and continuity of the slag collection process.

[0068] The diameter of the slag conveying pipe 2 is set to DN200. The diameter of the slag conveying pipe 2 is set to DN200, which is moderate in size. It can meet the smooth transportation requirements of the slag in the high-density sedimentation tank, avoid blockage caused by too small a diameter, and avoid wasting materials and space due to too large a diameter, ensuring that the slag cleaning system is efficient, stable and economical.

[0069] The width of the slag collecting tank 1 is set to 300-600 mm, and in this embodiment it is set to 300 mm, and the height is set to 300-600 mm, and in this embodiment it is set to 300 mm. This size can effectively accommodate the slag and ensure that the slag can be smoothly collected under the action of water flow.

[0070] The diameter of the filtrate discharge pipe 9 is greater than or equal to the diameter of the slag conveying pipe 2, and the slag filtrate is discharged to the sewage pipe network through the filtrate discharge pipe 9. The diameter of the filtrate discharge pipe 9 is greater than or equal to the diameter of the slag conveying pipe 2, which can ensure that the filtered slag filtrate can be quickly and smoothly discharged into the sewage pipe network, avoiding filtrate accumulation or poor discharge due to too small a pipe diameter.

[0071] The filtrate discharge pipe 9 is provided with a second waterproof sleeve 10 for connecting with the filtrate well 7. The second waterproof sleeve 10 effectively prevents leakage at the connection and avoids filtrate overflow and pollution of the surrounding environment.

[0072] Furthermore, the lower side of the guide plate 13 is configured as an arc surface. When under pressure, the arc surface can more efficiently convert pressure into a spring-up force than a flat surface, greatly improving the spring-up effect of the guide plate 13, thereby strengthening the disturbance of the scum, preventing the scum from sticking or settling, and ensuring its smooth transportation. At the same time, the smooth shape of the arc surface greatly reduces the probability of scum adhering to the guide plate 13, avoiding scum jamming.

[0073] Furthermore, a stop block 14 is provided at one end of the cushion body 12 away from the slag conveying pipe 2, and the stop block 14 is pressed against the adjacent guide plate 13, so that the guide plate 13 is tilted. The guide air cushion 11 is made of rubber material, and the thickness of the guide air cushion 11 is set to 1-5 cm. The setting of the stop block 14 ensures that the guide plate 13 is stably tilted, which is conducive to the precise unidirectional flow of slag to the slag conveying pipe 2 and improves the collection efficiency. The rubber guide air cushion 11 is 1-5 cm thick, which not only ensures sufficient elasticity to realize the swing of the guide plate 13 to disturb the slag, but also has appropriate strength to maintain the stability of the overall structure, adapt to water flow changes, and ensure the reliable operation of the unpowered slag cleaning system.

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "include..." or "comprise..." do not exclude the existence of other elements in the process, method, article or terminal device including the elements. In addition, in this article, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself.

[0075] The above description of the embodiments is to facilitate the understanding and use of the present invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A non-powered high-density sedimentation tank scum cleaning system, characterized in that: It includes a slag collecting trough, a slag conveying pipe and a collecting mechanism. The slag collecting trough is arranged in the transition zone of the sedimentation tank, and the top elevation of the slag collecting trough is 50-150mm lower than the liquid level elevation of the transition zone of the sedimentation tank. The length direction of the slag collecting trough is parallel to the width direction of the transition zone of the sedimentation tank. The slag collecting trough extends from one side of the transition zone of the sedimentation tank to the other side. A guide air cushion is provided at the bottom of the slag collecting trough. The guide air cushion includes a cushion body and a plurality of guide plates. The cushion body is arranged at the bottom of the guide plate. A plurality of the guide plates are arranged on the cushion body in a straight line. The plurality of the guide plates are inclined toward the direction of the position of the slag conveying pipe. The slag conveying pipe is connected to one end of the slag collecting trough, and the collecting mechanism is connected to the end of the slag conveying pipe.

2. According to claim 1, a non-powered high-density sedimentation tank scum cleaning system is characterized in that: It also includes a first waterproof sleeve, which connects the slag collecting tank and the slag conveying pipe.

3. According to claim 1, a non-powered high-density sedimentation tank scum cleaning system is characterized in that: It also includes a pipe support, the slag conveying pipe includes a horizontal section and a vertical section connected to each other, the horizontal section is connected to the slag collecting trough, the collecting mechanism is supported below the vertical section, and the pipe support fixes the slag conveying pipe to the wall of the sedimentation tank.

4. The unpowered high-density sedimentation tank scum cleaning system according to claim 1 is characterized in that: The slope of the slag collecting trough is greater than 5%.

5. The unpowered high-density sedimentation tank scum cleaning system according to claim 1 is characterized in that: A slag discharge valve is arranged at the bottom of the slag conveying pipe.

6. The unpowered high-density sedimentation tank scum cleaning system according to claim 1, characterized in that: The collecting mechanism includes a scum filter basket, a filtrate well and a filtrate discharge pipe. The filtrate well is provided with a grille cover plate, the grille cover plate is 100-200 mm above the floor, the scum filter basket is arranged on the grille cover plate, the sieve hole of the scum filter basket is 20-30 meshes, and the filtrate discharge pipe is connected to the filtrate well.

7. The unpowered high-density sedimentation tank scum cleaning system according to claim 6, characterized in that: The distance between the top of the slag filter basket and the end of the slag conveying pipe is 100-200 mm.

8. The unpowered high-density sedimentation tank scum cleaning system according to claim 1, characterized in that: The width of the slag collecting trough is set to 300-600 mm, and the height is set to 300-600 mm.

9. The unpowered high-density sedimentation tank scum cleaning system according to any one of claims 1 to 7, characterized in that: The lower side surface of the guide plate is configured as a curved surface.

10. The unpowered high-density sedimentation tank scum cleaning system according to claim 8, characterized in that: An abutting block is provided at one end of the cushion body away from the slag conveying pipe, and the abutting block abuts against the guide plate adjacent thereto, so that the guide plate is tilted. The guide air cushion is made of rubber material, and the thickness of the guide air cushion is set to 1-5 cm.

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