Anti-blocking structure of fecal sludge filtrate collecting pipeline

Abstract

The utility model discloses a fecal pollution filtrate collecting pipeline anti -blocking structure, including collecting pipe and high pressure water pump, the filtrate import end of collecting pipe is detachably installed with the thread cylinder through the flange, and the thread cylinder is installed with the filter grating, the outer wall of collecting pipe is provided with the support shell, and the inside installation of support shell has the electric heating tube, the water outlet of high pressure water pump is detachably connected with the filtrate export end of collecting pipe. In the utility model, through setting detachable filter grating assembly in the filtrate import end of collecting pipe main part, the filter grating net of 1-3mm aperture can forcibly intercept the easy winding, easy deposition macroparticle impurity such as coarse fiber, fecal block debris, avoid such impurities from entering the inside of pipeline from the source, thoroughly solve the jam problem caused by the macroparticle impurity stagnation, accumulation in the pipeline, and simultaneously, the grating frame is detachably connected with the collecting pipe through the quick -release connecting piece, is convenient for regular dismounting cleaning or replacement filter grating net, and maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment equipment, and in particular to an anti-clogging structure for sewage filtrate collection pipes. Background Technology

[0002] In large-scale farms, livestock and poultry breeding communities, and centralized manure treatment in rural areas, the liquid mixture obtained after preliminary solid-liquid separation of manure filtrate contains a large amount of soluble organic matter, fine suspended solids, oils, and microorganisms. The collection and transportation of this liquid mixture depends on a dedicated pipeline system, and its smooth operation is a key prerequisite for subsequent manure treatment.

[0003] However, existing sewage filtrate collection pipelines commonly suffer from frequent blockages in practical applications, severely affecting the stability of sewage treatment systems and increasing operation and maintenance costs. Specific drawbacks are as follows: Blockage caused by large particulate impurities: Although the manure filtrate undergoes preliminary solid-liquid separation, large particulate impurities with a diameter >1mm, which are easy to entangle and deposit, such as livestock and poultry manure fragments, undigested feed coarse fiber, hair, etc., may still remain. Most existing pipelines are directly connected to the filtrate source and lack effective pre-interception devices. After these large particulate impurities enter the pipeline with the filtrate, they are prone to getting stuck and accumulating at pipe bends, diameter changes, or areas where the flow rate decreases, gradually narrowing the pipe diameter and eventually leading to complete blockage of the pipeline.

[0004] Low temperature-induced condensation blockage: The grease in manure filtrate, such as the fat components in livestock and poultry manure, and high-protein organic matter, such as protein decomposition products, easily coagulate into lumps or viscous substances when the ambient temperature is below 10℃. Most existing pipelines do not have temperature control measures. In winter or low-temperature environments, the condensate will adhere to the inner wall of the pipeline to form stubborn grease or scale. On the one hand, it directly reduces the flow cross-section of the pipeline, and on the other hand, it will adsorb the fine suspended matter flowing through it, accelerating the blockage process. For example, in northern regions, the proportion of blockages in livestock farm manure pipelines caused by grease condensation in winter exceeds 60%, and the condensate is difficult to remove by conventional flushing. It requires disassembling the pipeline for cleaning, which makes operation and maintenance extremely difficult.

[0005] Impurity deposition caused by pipe material: Existing sewage filtrate collection pipes are mostly made of concrete pipes, ordinary cast iron pipes, or low-specification plastic pipes. The inner walls of these pipes are rough, with an inner wall roughness Ra usually >10μm. Fine suspended matter in the sewage filtrate, such as fecal sludge particles and colloidal substances with a diameter of 0.1-1mm, easily adhere to the rough inner walls, forming continuous deposition. As the operating time goes by, the deposition layer continues to thicken, which not only leads to a decrease in pipe flow but also breeds bacteria, produces odors, aggravates pipe corrosion, and shortens the service life of the pipe.

[0006] The lack of an effective cleaning mechanism leads to the accumulation of blockages: Existing pipeline systems mostly rely on a passive operation and maintenance model of "unblocking after blockage" and lack regular proactive cleaning methods. Even if there is no obvious blockage in the pipeline at the beginning, the impurities remaining on the inner wall will gradually accumulate, forming a vicious cycle of "small blockage - reduced flow - accelerated deposition - large blockage". Conventional unblocking methods, such as manual poking and low-pressure flushing, are not effective for stubborn deposits and are easy to damage the pipeline, further increasing operation and maintenance costs.

[0007] To address these shortcomings, we proposed an anti-clogging structure for the sewage filtrate collection pipe. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-clogging structure for sewage filtrate collection pipes.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: a clogging prevention structure for a sewage filtrate collection pipe, comprising a collection pipe and a high-pressure water pump, wherein a threaded cylinder is detachably installed at the filtrate inlet end of the collection pipe via a flange, and a filter grid is installed on the threaded cylinder; a support shell is provided on the outer wall of the collection pipe, and an electric heating tube is installed inside the support shell; and the outlet end of the high-pressure water pump is detachably connected to the filtrate outlet end of the collection pipe.

[0010] The support shell has a hollow tubular structure, and the diameter of the support shell is larger than the diameter of the collecting tube.

[0011] The diameter of the filter grid is larger than the diameter of the collection pipe.

[0012] The high-pressure water pump and electric heating element are connected to an external power source via wires.

[0013] The collection tube is made of stainless steel.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention features a detachable filter grid assembly installed at the filtrate inlet end of the collection pipe. The 1-3mm pore size of the filter grid effectively intercepts large, easily entangled, and deposited particles with a diameter greater than 1mm, such as coarse fibers and fecal fragments. This prevents such impurities from entering the pipe at the source, completely solving the blockage problem caused by the accumulation of large particles within the pipe. Simultaneously, the grid frame is detachably connected to the collection pipe via quick-release connectors, facilitating regular disassembly, cleaning, or replacement of the filter grid. Maintenance is convenient, requiring no disassembly of the entire pipe. An electric heating element is embedded within the collection pipe wall, working in conjunction with a temperature sensor and thermostat to precisely maintain the filtrate temperature within the pipe at 15-25℃. This temperature range effectively prevents grease and high-protein organic matter in the fecal filtrate from coagulating into lumps or viscous substances, preventing these coagulated substances from adhering to the inner wall of the pipe and forming grease or scale. This process-level blocking of blockages caused by excessively low temperatures ensures stable operation even in low-temperature environments.

[0015] In this invention, the main body of the collection pipe is made of stainless steel, with an inner wall roughness Ra≤3μm, which is much lower than that of traditional concrete pipes and cast iron pipes. The smooth inner wall can significantly reduce the adhesion resistance of fine suspended matter in the sewage filtrate, such as colloidal particles and microbial cells, reduce the probability of impurities depositing on the pipe wall, extend the pipeline's blockage-free operation cycle, reduce bacterial growth, reduce the risk of pipeline corrosion, and extend the pipeline's service life. The high-pressure backflushing component can use a high-pressure water pump to introduce 0.3-0.5MPa high-pressure clean water into the collection pipe, which can effectively disperse the fine deposits remaining on the inner wall of the pipeline, preventing the accumulation of impurities and blockage. This achieves a proactive operation and maintenance mode to prevent blockage, replacing the traditional passive mode of "unblocking after blockage", and significantly reducing the workload and cost of operation and maintenance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0017] Figure 1 This is a schematic diagram of the anti-clogging structure for the sewage filtrate collection pipeline proposed in this utility model; Figure 2 This is a schematic diagram of the external structure of the anti-clogging structure for the sewage filtrate collection pipeline proposed in this utility model. Figure 3 A perspective view of the collecting tube, supporting shell, and threaded cylinder.

[0018] Legend: 1. Collection pipe; 2. Support shell; 3. Electric heating tube; 4. Threaded cylinder; 5. Filter screen; 6. High-pressure water pump. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] Please refer to Figure 1 , Figure 2 and Figure 3 The sewage filtrate collection pipe anti-clogging structure includes a collection pipe 1 and a high-pressure water pump 6.

[0022] The core components of the anti-clogging structure of this utility model are clearly defined: the collection pipe 1 is the main channel for collecting and transporting fecal filtrate, and the high-pressure water pump 6 is the power source for realizing reverse high-pressure flushing of the pipeline. Together, they constitute the basic framework of the anti-clogging structure.

[0023] The filtrate inlet end of the collection tube 1 is detachably fitted with a threaded cylinder 4 via a flange.

[0024] The connection method and position of the collection pipe 1 and the threaded cylinder 4 are described. The filtrate inlet end is the starting end of the sewage filtrate entering the pipeline. The flange connection allows for easy disassembly of the threaded cylinder 4, which facilitates the subsequent maintenance, cleaning or replacement of the threaded cylinder 4 and related components. At the same time, the flange connection has good sealing performance, which can prevent the filtrate from leaking at the connection.

[0025] Furthermore, a filter grid 5 is installed on the threaded cylinder 4.

[0026] The filter grid 5 serves as the mounting carrier for the filter grid. As a pre-interception component, the filter grid 5 is fixed to the filtrate inlet end of the collection pipe 1 by the threaded cylinder 4. It can perform preliminary filtration of the sewage filtrate entering the pipe, intercepting large particulate impurities and reducing the risk of blockage from the source.

[0027] The outer wall of the collection pipe 1 is provided with a support shell 2.

[0028] The installation position and function of the support shell 2 are described. The support shell 2 is wrapped around the outer wall of the collecting pipe 1. On the one hand, it provides a stable installation space and protection for the electric heating tube 3 installed inside, avoiding the electric heating tube 3 from being directly exposed to the outside and being damaged by external forces or corroded by feces. On the other hand, it can reduce the heat loss of the electric heating tube 3 during operation and improve the heating efficiency.

[0029] Furthermore, an electric heating element 3 is installed inside the support shell 2.

[0030] The installation position of the electric heating tube 3 is clearly defined. The electric heating tube 3 is located in the space between the support shell 2 and the collection tube 1. When working, it can transfer heat to the collection tube 1, thereby heating the fecal filtrate in the tube, regulating the temperature of the filtrate, and preventing the condensation of grease and organic matter at low temperatures.

[0031] The outlet end of the high-pressure water pump 6 is detachably connected to the filtrate outlet end of the collection pipe 1.

[0032] The connection between the high-pressure water pump 6 and the collection pipe 1 is as follows: the filtrate outlet end is the end of the sewage filtrate discharge pipe, and the water outlet end of the high-pressure water pump 6 is connected to this point, which allows high-pressure clean water to be introduced into the collection pipe 1. The detachable design facilitates the inspection, maintenance or replacement of the high-pressure water pump 6, while not affecting the normal filtrate transport function of the collection pipe 1.

[0033] Please refer to Figure 1 and Figure 3 The support shell 2 has a hollow tubular structure, and the diameter of the support shell 2 is larger than the diameter of the collection tube 1.

[0034] The structural features and dimensional relationships of the support shell 2 are described. The hollow tubular structure can adapt to the shape of the collecting tube 1 and wrap the outer wall of the collecting tube 1. The diameter is larger than the diameter of the collecting tube 1 in order to form a sufficient space between the support shell 2 and the collecting tube 1 to accommodate the electric heating tube 3 and ensure that the electric heating tube 3 can be stably installed and work normally.

[0035] Please refer to Figure 1 , Figure 2 and Figure 3 The diameter of the filter grid 5 is larger than the diameter of the collection pipe 1.

[0036] The dimensional relationship between the filter grid 5 and the collection pipe 1 is explained. The filter grid 5 has a larger diameter and can completely cover the filtrate inlet section of the collection pipe 1, ensuring that all the fecal filtrate entering the collection pipe 1 can be filtered by the filter grid 5. No filtrate enters the pipe directly from the edge of the grid without being filtered, thus ensuring the comprehensive interception of large particulate impurities.

[0037] Please refer to Figure 1 , Figure 2 The high-pressure water pump 6 and the electric heating element 3 are connected to an external power source via wires.

[0038] This section explains the power source of the high-pressure water pump 6 and the electric heating element 3. An external power source provides the electrical energy required for their operation, ensuring that the high-pressure water pump 6 can generate high-pressure water flow and the electric heating element 3 can generate heat normally. This is the energy guarantee for the two core functional components to achieve their anti-clogging function.

[0039] Please refer to Figure 1 , Figure 2 and Figure 3 Collection pipe 1 is made of stainless steel.

[0040] The material selection of collection tube 1 is clearly defined. Stainless steel tubes have smooth inner walls with a roughness Ra≤3μm, which can reduce the adhesion resistance of fine suspended matter in fecal filtrate and reduce the probability of impurity deposition. At the same time, stainless steel is corrosion resistant and has high strength, which can extend the service life of collection tube 1 and adapt to the corrosive environment of fecal filtrate.

[0041] Working Principle: During use, the manure filtrate is first guided to the filtrate inlet of collection pipe 1. The filtrate first contacts the filter grid 5 installed on the threaded cylinder 4. The filter grid 5, through its own structure, forcibly intercepts large particles (>1mm in diameter) of the manure filtrate that are easily entangled and deposited, such as livestock and poultry manure fragments and undigested feed coarse fiber. The filtered filtrate then enters the collection pipe 1. At this time, the external power supply is turned on, causing the electric heating tube 3 inside the support shell 2 to start working. The heat generated by the electric heating tube 3 is transferred to collection pipe 1, stabilizing the temperature of the manure filtrate inside the pipe at 15-25℃. This temperature range effectively prevents grease and high-protein organic matter in the filtrate from coagulating into lumps or viscous substances, preventing them from adhering to the inner wall of collection pipe 1 and forming grease or scale. During the filtrate transport process in collection pipe 1, the use of stainless steel tubing and its smooth inner wall significantly reduces the adhesion of fine suspended matter in the filtrate, such as colloidal particles and microbial cells, reducing the risk of impurity deposition. When it is necessary to clean collection pipe 1... During cleaning, connect the outlet of the high-pressure water pump 6 to the filtrate outlet of the collection pipe 1 and turn on the power. The high-pressure water pump 6 generates high-pressure clean water at a pressure of 0.3-0.5 MPa. The high-pressure clean water flows in reverse from the filtrate outlet to the inlet of the collection pipe 1, dispersing the fine deposits remaining on the pipe wall and preventing the accumulation of impurities that could cause blockages. This ensures that the collection pipe 1 can continuously and smoothly complete the collection and transportation of fecal filtrate. During the entire operation, if it is necessary to clean large particles of impurities intercepted on the filter screen 5, the threaded cylinder 4 can be removed by disassembling the flange. After cleaning, it can be reinstalled back into the filtrate inlet of the collection pipe 1.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A clog-proof structure for a sewage filtrate collection pipe, comprising a collection pipe (1) and a high-pressure water pump (6), characterized in that, The filtrate inlet end of the collection pipe (1) is detachably fitted with a threaded cylinder (4) via a flange, and a filter grid (5) is installed on the threaded cylinder (4). A support shell (2) is provided on the outer wall of the collection pipe (1), and an electric heating tube (3) is installed inside the support shell (2). The outlet end of the high-pressure water pump (6) is detachably connected to the filtrate outlet end of the collection pipe (1).

2. The anti-clogging structure for the sewage filtrate collection pipe according to claim 1, characterized in that, The support shell (2) has a hollow tubular structure, and the diameter of the support shell (2) is larger than the diameter of the collecting tube (1).

3. The anti-clogging structure for the sewage filtrate collection pipe according to claim 1, characterized in that, The diameter of the filter grid (5) is larger than the diameter of the collection pipe (1).

4. The anti-clogging structure for the sewage filtrate collection pipe according to claim 1, characterized in that, The high-pressure water pump (6) and the electric heating tube (3) are connected to an external power source via wires.

5. The anti-clogging structure for the sewage filtrate collection pipe according to claim 1, characterized in that, The collection tube (1) is made of stainless steel.

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