A sludge return pipe anti-blocking device

Abstract

The present invention provides a sludge return pipe anti-blocking device, comprising a sludge return pipe, a sludge return pump and an air stripping device, wherein one end of the sludge return pipe is installed on the output end of the sludge return pump, the air outlet end of the air stripping device is located at the sludge inlet of the sludge return pipe, and further comprises a disturbance pipe, wherein the disturbance pipe is arranged adjacent to the sludge return pipe, the air inlet end of the disturbance pipe is connected to the air supply path of the air stripping device, an air channel for gas circulation is formed inside the disturbance pipe, and at least one air outlet is arranged on the side of the disturbance pipe facing the outer wall of the sludge return pipe. By adopting such a scheme, sludge can be effectively prevented from accumulating in the return pipe, ensuring that the inner diameter of the pipe is unobstructed, thereby improving the efficiency of sludge return and overall sewage treatment, and reducing the cost of frequent maintenance and replacement of pipes by actively preventing blockage.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge return flow, and in particular relates to a sludge return flow pipe anti-blocking device. Background Art

[0002] In the field of sewage treatment, sludge treatment is one of the key links, and its effective management is directly related to the overall operating efficiency and treatment effect of the sewage treatment plant. Sludge return is a core process in the activated sludge process (such as sequencing batch activated sludge process SBR, oxidation ditch process, biological contact oxidation process, etc.), which aims to return a part of the treated sludge to the aeration tank or the front end of the reactor to maintain the balance of the microbial population in the system, enhance the biological treatment capacity, and promote the degradation of pollutants. However, in actual operation, the sludge return system faces a common problem - blockage.

[0003] In order to solve the blockage problem, at present, mechanical scraping is often used to prevent and solve the blockage of the sludge return pipe. The Chinese utility model patent with application number CN202021307918.8 and name "Anti-blocking sludge return device" sets the sludge input pipe and output pipe on the pump body respectively, and then sets a stirring rod in the pump body to crush the large particles in the sludge. At the same time, a scraper and scraping teeth are set to scrape the sludge attached to the inner wall of the pump body to achieve the function of preventing blockage.

[0004] However, its design still faces a key limitation: it relies on the sludge to be able to pass smoothly through the input pipe into the pump body. In fact, the high viscosity and particulate-rich sludge characteristics often lead to blockage at the initial stage of the input pipe, hindering the effective transmission of sludge, and thus limiting the anti-blocking performance of the device. Therefore, it is necessary to start anti-blocking measures from the earliest blockage risk point of the sludge return system, that is, the input pipe stage. Summary of the invention

[0005] In view of the defects of the prior art, the technical problem to be solved by the present invention is to provide a sludge return pipe anti-blocking device, which can effectively prevent sludge accumulation in the return pipe, ensure the unobstructed inner diameter of the pipe, thereby improving the efficiency of sludge return and overall sewage treatment, and reducing the cost of frequent maintenance and replacement of pipes by actively preventing blockage.

[0006] In order to solve the above technical problems, the technical solution of the present invention is:

[0007] A sludge return pipe anti-clogging device comprises a sludge return pipe, a sludge return pump and an air stripping device, wherein one end of the sludge return pipe is installed on the output end of the sludge return pump, and the air outlet end of the air stripping device is located at the sludge inlet of the sludge return pipe. The device also comprises a disturbance pipe, which is arranged adjacent to the sludge return pipe, and the air inlet end of the disturbance pipe is connected to the air supply path of the air stripping device. An air channel for gas circulation is formed inside the disturbance pipe, and at least one air outlet hole is arranged on the side of the disturbance pipe facing the outer wall of the sludge return pipe.

[0008] Because the sludge is sticky and contains solid particles, it is very easy to deposit or adsorb on the inner wall of the sludge return pipe. In the present invention, when the gas is directly sprayed from the air outlet of the disturbance pipe to the outer wall of the sludge return pipe, a series of physical forces will be generated, including direct impact force and tiny vortices formed around it. These forces can break up the sludge particles close to the pipe wall through the outer wall of the return pipe to make them suspended. After being subjected to the physical force, the return pipe will also vibrate, reducing the chance of sludge particles depositing on the pipe wall and keeping the inner wall of the pipe clean. At the same time, the injection of gas increases the turbulence of the water body. The turbulence not only disturbs the return pipe, but also promotes the solid particles to be more fully dispersed in the water, avoiding the aggregated particles from entering the return pipe. The air lift device can be used to lift the sludge particles near and inside the sludge return pipe, and the disturbance pipe is used to avoid the deposition and adsorption of sludge particles in the sludge return pipe. The two work together to more effectively treat sewage and avoid clogging of the sludge return pipe. The air supply system of the air lift device is combined with the air supply demand of the disturbance pipe, which simplifies the system design and reduces equipment investment and operating costs. Among them, the sludge return pipe and the disturbance pipe can be fixedly connected to the sedimentation tank or other external fixed objects.

[0009] Preferably, a disturbance ring is further included, wherein the disturbance ring is fixedly connected to the disturbance pipe, the interior of the disturbance ring is connected to the airway of the disturbance pipe, the disturbance ring is sleeved on the sludge return pipe, and the disturbance ring is provided with an air outlet on one side of the sludge return pipe, and the air outlet is provided in plurality. The disturbance ring is directly sleeved on the sludge return pipe, and a plurality of air outlets are provided on the side of the sludge return pipe. Such a design enables gas or bubbles to directly act on the surface of the sludge return pipe more accurately. Compared with releasing gas only from one side of the outer wall of the pipe, the configuration of the disturbance ring forms a surrounding gas release area, which significantly enhances the disturbance intensity of the local area around the sludge return pipe and more effectively prevents sludge deposition and adhesion.

[0010] Wherein, the disturbance ring is provided in multiple numbers, and the multiple disturbance rings are respectively located at the sludge inlet and the bend of the sludge return pipe. Due to the change of the pipe shape at the bend of the pipe, the fluid needs to overcome greater inertia, resulting in the natural slowdown of the flow rate at the bend. The slowed flow rate reduces the ability to carry sludge particles, and some particles are more easily separated from the fluid, settled and attached to the pipe wall. Therefore, the disturbance ring is set at the bend of the pipe where sludge is easily accumulated, which can avoid the accumulation of sludge particles at the bend of the return pipe; the disturbance ring is set at the sludge inlet, and the tiny bubbles generated when the gas is released rise in the water, which will generate shear force with the surrounding liquid. This shear force can destroy the aggregation structure between the sludge particles, so that the sludge particles can be suspended in the fluid and continue to move with the water flow, effectively avoiding the accumulation of sediments in the pipe to form blockage.

[0011] Preferably, the gas stripping device comprises a gas stripping device and a gas stripping pipe, the gas outlet end of the gas stripping pipe extends into the sludge inlet of the sludge return pipe, and the gas inlet end of the gas stripping pipe is connected to the gas stripping device. Gas is directly injected into the sludge return pipe to form a gas-liquid mixture. This process utilizes the rising force of the gas to suspend the sludge particles, effectively reducing the deposition of sludge inside the return pipe, especially at the inlet, and preventing the occurrence of initial blockage; it can also increase the contact between sludge and oxygen and enhance biological activity.

[0012] In order to avoid clogging of the gas outlet of the gas lift pipe, the present invention further provides the following solution:

[0013] In the first scheme, the air lift pipe is provided with a pipeline swing device, the pipeline swing device includes a rotary joint and a driving device, the air outlet end of the air lift pipe is fixedly connected to the rotating end of the rotary joint, the air inlet end of the air lift pipe is fixedly connected to the fixed end of the rotary joint, the driving device is connected to the rotating end of the rotary joint to drive the air outlet end of the air lift pipe to swing, and the pipeline swing device is installed in a waterproof box. The driving device drives the rotary joint so that the air outlet end of the air lift pipe can swing. This dynamic movement can effectively prevent the accumulation of solid particles at the air outlet of the air lift pipe, reduce the risk of air outlet blockage, and ensure the continuity and stability of the air lift process; moreover, when the air outlet end of the air lift pipe swings to a downward position, the released gas can directly act on the sludge deposited at the bottom, causing the sludge particles to re-suspend, and then flow more smoothly into the sludge return pipe, greatly optimizing the efficiency of sludge circulation.

[0014] The second solution is that the outlet end of the air stripping pipe is a conical structure, and a filter is installed on the outlet end of the air stripping pipe. The conical structure of the outlet end of the air stripping pipe helps to reduce the accumulation of sludge and other solid particles at the outlet and cause blockage; the filter can effectively intercept larger solid particles or fiber materials, preventing these materials from entering the air stripping pipe with the air flow and causing blockage, protecting the air stripping equipment and ensuring the stable operation of the air stripping system.

[0015] Regarding the problem of reliable positioning and installation of the sludge return pipe, the present invention further provides the following solutions:

[0016] The first scheme also includes a pipe fixing device, one end of which is a fixing component, and the other end of which is sleeved on the sludge return pipe. A buffer pad is arranged on the inner wall of one end of the pipe fixing device located on the sludge return pipe, and the buffer pad contacts the outer wall of the sludge return pipe. The pipe fixing device can limit the movement range of the sludge return pipe, ensure the stability of the sludge return process, and the cost is also low; a buffer pad is arranged on the inner wall of the end of the pipe fixing device that contacts the sludge return pipe, which can reduce the wear caused by direct hard contact, protect the outer wall of the sludge return pipe, extend its service life, and avoid excessive suppression of the vibration transmitted to the sludge return pipe when the disturbance pipe is working, thereby ensuring that the disturbance effect is fully exerted; wherein, the fixing component is used to fix the pipe fixing device on the sedimentation tank or other external fixed objects.

[0017] The second scheme also includes a pipeline elastic fixing device, which includes a pipeline limiting ring and an elastic support member, one end of the pipeline limiting ring is a fixing member, the annular end of the pipeline limiting ring is sleeved on the sludge return pipe, the elastic support member is slidably connected to the inner wall of the annular end of the pipeline limiting ring, and the elastic support member is in contact with the outer wall of the sludge return pipe. In this way, the sludge return pipe can move in a larger range and can adapt to the vibration generated when the disturbance pipe is working, which neither inhibits the function of the disturbance pipe to prevent deposition of the sludge return pipe, nor weakens the effect of pneumatic disturbance due to excessive rigid fixation; wherein the fixing member is used to fix the pipeline limiting ring on the sedimentation tank or other external fixed objects.

[0018] The elastic support member includes a support column and an elastic member, one end of the elastic member is fixedly connected to the inner wall of the pipe limit ring, one end of the support column is connected to the other end of the elastic member, and the support column and the inner wall of the pipe limit ring are slidably matched. In this way, the elastic support member ensures the free sliding of the sludge return pipe within a certain displacement range, which not only limits the excessive movement of the return pipe, maintains the stability of the return system, but also gives the return pipe the necessary movement space when it vibrates mechanically.

[0019] Preferably, it also includes a hammering device, which includes a pneumatic hammer and a fixing seat, the fixing seat is fixedly mounted on the sludge return pipe, the pneumatic hammer is fixedly mounted on the fixing seat so that the piston of the pneumatic hammer can knock on the outer wall of the sludge return pipe, and the hammering device is installed in a waterproof box. The pneumatic hammer can effectively loosen and remove the sediments attached to the pipe wall by periodically knocking on the outer wall of the sludge return pipe, and is used together with the disturbance pipe to prevent the pipeline blockage caused by the gradual accumulation of sediments; it is worth noting that the disturbance pipe, as a conventional operating component, continuously generates disturbances at the sludge return pipe, effectively preventing the deposition and aggregation of sludge particles, and the hammering device is designed as an auxiliary measure that is occasionally activated, mainly used to deal with those stubborn sediments that are still difficult to completely avoid under the continuous action of the disturbance pipe. For example, when it is detected that there is a tendency for sediment accumulation in the pipeline, or when regular maintenance is required, the hammer device can be activated to cause the sediment to fall off, thereby complementing the dynamic action of the disturbance pipe to jointly maintain the unobstructed flow of the pipeline and ensure the stable operation of the sludge return system.

[0020] In summary, such a sludge return pipe anti-clogging device can effectively prevent sludge from accumulating in the return pipe, ensuring the unobstructed inner diameter of the pipe, thereby improving the efficiency of sludge return and overall sewage treatment, and reducing the cost of frequent maintenance and replacement of pipes by actively preventing blockages. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 This is a schematic diagram of the structure of the sludge return pipe anti-clogging device of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of the sludge return pipe anti-clogging device with a disturbance ring according to the present invention;

[0024] Figure 3 It is a schematic diagram of the structure in which the disturbance ring sleeve is arranged on the sludge return pipe in the sludge return pipe anti-clogging device of the present invention;

[0025] Figure 4 It is a structural schematic diagram of Example 1 of the air stripping device in the sludge return pipe anti-clogging device of the present invention;

[0026] Figure 5It is a structural schematic diagram of Example 2 of the air stripping device in the sludge return pipe anti-clogging device of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the pipe fixing device in the sludge return pipe anti-clogging device of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the pipeline elastic fixing device in the sludge return pipe anti-blocking device of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the hammer device in the sludge return pipe anti-clogging device of the present invention.

[0030] in,

[0031] 1- Sludge return pipe;

[0032] 2-disturbance tube; 21-air outlet; 22-disturbance ring;

[0033] 3-gas stripping device; 31-gas stripping pipe; 311-filter screen; 32-pipeline swing device; 321-rotating joint; 322-driving device;

[0034] 4- pipe fixing device; 41- buffer pad;

[0035] 5- pipeline elastic fixing device; 51- pipeline limiting ring; 52- elastic support member; 521- support column; 522- elastic member;

[0036] 6- hammer device; 61- pneumatic percussion hammer; 62- fixed seat. DETAILED DESCRIPTION

[0037] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figure 1 As shown, a sludge return pipe anti-clogging device includes a sludge return pipe 1, a sludge return pump and an air stripping device 3, one end of the sludge return pipe 1 is installed on the output end of the sludge return pump, the air outlet end of the air stripping device 3 is located at the sludge inlet of the sludge return pipe 1, and also includes a disturbance pipe 2, the disturbance pipe 2 is arranged adjacent to the sludge return pipe 1, the air inlet end of the disturbance pipe 2 is connected to the air supply path of the air stripping device 3, an airway for gas circulation is formed inside the disturbance pipe 2, and at least one air outlet hole 21 is arranged on the side of the disturbance pipe 2 facing the outer wall of the sludge return pipe 1.

[0039] Since the sludge is sticky and contains solid particles, the sludge is very easy to be deposited or adsorbed on the inner wall of the sludge return pipe 1 . In the present invention, when the gas is directly sprayed from the air outlet 21 of the disturbance pipe 2 to the outer wall of the sludge return pipe 1, a series of physical forces will be generated, including direct impact force and tiny vortices formed around it. These forces can break up the sludge particles close to the pipe wall through the outer wall of the return pipe and make them suspended. Moreover, after being subjected to the physical force, the return pipe will also vibrate, reducing the chance of sludge particles depositing on the pipe wall and keeping the inner wall of the pipe clean. At the same time, the injection of gas increases the turbulence of the water body. The turbulence not only disturbs the return pipe, but also promotes the solid particles to be more fully dispersed in the water, avoiding the aggregated particles from entering the return pipe. The air lift device 3 can be used to lift the sludge particles near and inside the sludge return pipe 1, while the disturbance pipe 2 is used to avoid the deposition and adsorption of sludge particles in the sludge return pipe 1. The two work together to more effectively treat sewage and avoid blockage of the sludge return pipe 1. The air supply system of the air lift device 3 is combined with the air supply demand of the disturbance pipe 2, which simplifies the system design and reduces equipment investment and operating costs. The sludge return pipe 1 and the disturbance pipe 2 can be fixedly connected to a sedimentation tank or other external fixed objects.

[0040] Further, such as Figure 2 and Figure 3 As shown, it also includes a disturbance ring 22, which is fixedly connected to the disturbance pipe 2, and the inside of the disturbance ring 22 is connected to the airway of the disturbance pipe 2. The disturbance ring 22 is sleeved on the sludge return pipe 1, and the disturbance ring 22 is provided with an air outlet 21 on one side of the sludge return pipe 1, and there are multiple air outlets 21. The disturbance ring 22 is directly sleeved on the sludge return pipe 1, and multiple air outlets 21 are provided on the side of the sludge return pipe 1. Such a design allows the gas or bubbles to directly act on the surface of the sludge return pipe more accurately. Compared with releasing gas only from one side of the outer wall of the pipe, the configuration of the disturbance ring 22 forms a surrounding gas release area, which significantly enhances the disturbance intensity of the local area around the sludge return pipe 1 and more effectively prevents sludge deposition and adhesion.

[0041] Among them, there are multiple disturbance rings 22, and the multiple disturbance rings 22 are respectively located at the sludge inlet and the pipe bend of the sludge return pipe 1. Due to the change in the shape of the pipe at the pipe bend, the fluid needs to overcome greater inertia, resulting in a natural slowdown in the flow rate at the bend. The slowed flow rate reduces the ability to carry sludge particles, and some particles are more easily separated from the fluid, settled and attached to the pipe wall. Therefore, the disturbance ring 22 is set at the pipe bend where sludge is easily accumulated, which can avoid the accumulation of sludge particles at the bend of the return pipe; the disturbance ring 22 is set at the sludge inlet, and the tiny bubbles generated when the gas is released rise in the water, which will generate shear force with the surrounding liquid. This shear force can destroy the aggregation structure between the sludge particles, so that the sludge particles can be suspended in the fluid and continue to move with the water flow, effectively avoiding the accumulation of sediments in the pipe to form blockages.

[0042] Furthermore, the gas stripping device 3 includes a gas stripping device and a gas stripping pipe 31, the gas outlet end of the gas stripping pipe 31 extends into the sludge inlet of the sludge return pipe 1, and the gas inlet end of the gas stripping pipe 31 is connected to the gas stripping device. Gas is directly injected into the sludge return pipe 1 to form a gas-liquid mixture. This process utilizes the rising force of the gas to suspend the sludge particles, effectively reducing the deposition of sludge inside the return pipe, especially at the inlet, and preventing the occurrence of initial blockage; and it can also increase the contact between sludge and oxygen and enhance biological activity.

[0043] It should be noted that the gas stripping equipment in this embodiment is a conventional device and has nothing special about it, so it will not be explained and illustrated in detail.

[0044] In order to avoid clogging of the gas outlet of the gas lift pipe 31, the present invention further provides the following embodiments:

[0045] Embodiment 1:

[0046] like Figure 4 As shown, the air lift pipe 31 is provided with a pipeline swing device 32, which includes a rotary joint 321 and a driving device 322. The air outlet end of the air lift pipe 31 is fixedly connected to the rotating end of the rotary joint 321, and the air inlet end of the air lift pipe 31 is fixedly connected to the fixed end of the rotary joint 321. The driving device 322 is connected to the rotating end of the rotary joint 321 to drive the air outlet end of the air lift pipe 31 to swing. The pipeline swing device 32 is installed in a waterproof box. The rotary joint 321 is driven by the driving device 322, so that the air outlet end of the air lift pipe 31 can swing within a certain range. This dynamic movement can effectively prevent the accumulation of solid particles at the air outlet of the air lift pipe 31, reduce the risk of air outlet blockage, and ensure the continuity and stability of the air lift process; moreover, when the air outlet end of the air lift pipe 31 swings to a downward position, the released gas can directly act on the sludge deposited at the bottom, prompting the sludge particles to re-suspend, and then flow more smoothly into the sludge return pipe 1, greatly optimizing the efficiency of sludge circulation.

[0047] It should also be noted that the driving device 322 is very common, such as a gear transmission module, etc.; the rotary joint 321 is also a product available on the market. The driving device 322 and the rotary joint 321 used in this embodiment are nothing special, so they will not be explained and illustrated in detail.

[0048] Embodiment 2:

[0049] like Figure 5 As shown, the outlet end of the air stripping pipe 31 is a conical structure, and a filter screen 311 is installed on the outlet end of the air stripping pipe 31. The conical structure of the outlet end of the air stripping pipe 31 helps to reduce the accumulation of sludge and other solid particles at the outlet and cause blockage; the filter screen 311 can effectively intercept larger solid particles or fiber materials, preventing these materials from entering the air stripping pipe 31 with the air flow and causing blockage, thereby protecting the air stripping equipment and ensuring the stable operation of the air stripping system.

[0050] Regarding the problem of reliable positioning and installation of the sludge return pipe 1, the present invention further provides the following embodiments:

[0051] Embodiment A:

[0052] like Figure 6 As shown, it also includes a pipe fixing device 4, one end of which is a fixing component, and the other end of which is sleeved on the sludge return pipe 1. The pipe fixing device 4 is located on the inner wall of one end of the sludge return pipe 1 and is provided with a buffer pad 41, which contacts the outer wall of the sludge return pipe 1. The pipe fixing device 4 can limit the movement range of the sludge return pipe 1, ensure the stability of the sludge return process, and the cost is also low; the buffer pad 41 is provided on the inner wall of the end of the pipe fixing device 4 that contacts the sludge return pipe 1, which can reduce the wear caused by direct hard contact, protect the outer wall of the sludge return pipe 1, extend its service life, and avoid excessively suppressing the vibration transmitted to the sludge return pipe 1 when the disturbance pipe 2 is working, thereby ensuring that the disturbance effect is fully exerted. Among them, the buffer pad 41 can be made of flexible materials such as rubber, and the fixing component is used to fix the pipe fixing device 4 on the sedimentation tank or other external fixed objects.

[0053] Embodiment B:

[0054] like Figure 7As shown, it also includes a pipeline elastic fixing device 5, which includes a pipeline limiting ring 51 and an elastic support member 52. One end of the pipeline limiting ring 51 is a fixing component. The annular end of the pipeline limiting ring 51 is sleeved on the sludge return pipe 1. The elastic support member 52 is slidably connected to the inner wall of the annular end of the pipeline limiting ring 51, and the elastic support member 52 is in contact with the outer wall of the sludge return pipe 1. In this way, the sludge return pipe 1 can move in a larger range and can adapt to the vibration generated when the disturbance pipe 2 is working. It neither suppresses the function of the disturbance pipe 2 to prevent the sludge return pipe 1 from sedimentation, nor weakens the effect of the pneumatic disturbance due to excessive rigid fixation; wherein the fixing component is used to fix the pipeline limiting ring 51 on the sedimentation tank or other external fixed objects.

[0055] More specifically, the elastic support member 52 includes a support column 521 and an elastic member 522, one end of the elastic member 522 is fixedly connected to the inner wall of the pipe limiting ring 51, one end of the support column 521 is connected to the other end of the elastic member 522, and the support column 521 is slidably matched with the inner wall of the pipe limiting ring 51. In this way, the elastic support member 52 ensures the free sliding of the sludge return pipe 1 within a certain displacement range, which not only limits the excessive movement of the return pipe, maintains the stability of the return system, but also gives the return pipe the necessary movement space when it vibrates mechanically.

[0056] The support column 521 may be made of flexible materials, such as rubber or elastic plastic.

[0057] In addition, if Figure 8 As shown, it also includes a hammer device 6, which includes a pneumatic hammer 61 and a fixing seat 62. The fixing seat 62 is fixedly mounted on the sludge return pipe 1. The pneumatic hammer 61 is fixedly mounted on the fixing seat 62 so that the piston of the pneumatic hammer 61 can knock on the outer wall of the sludge return pipe 1. The hammer device 6 is installed in a waterproof box. The pneumatic hammer 61 can effectively loosen and remove the sediment attached to the pipe wall by periodically knocking on the outer wall of the sludge return pipe 1, and is used together with the disturbance pipe 2 to prevent the pipeline blockage problem caused by the gradual accumulation of sediment.

[0058] It should be noted that the disturbance pipe 2, as a conventional operating component, continuously generates disturbances at the sludge return pipe 1, effectively preventing the deposition and aggregation of sludge particles, while the hammer device 6 is designed as an auxiliary measure that is occasionally activated, mainly used to deal with those stubborn deposits that are still difficult to completely avoid under the continuous action of the disturbance pipe 2. For example, when it is detected that the deposits in the pipeline have a tendency to accumulate, or when regular maintenance is required, the hammer device can be activated to cause the deposits to fall off, thereby complementing the dynamic action of the disturbance pipe 2, jointly maintaining the pipeline unobstructed and ensuring the stable operation of the sludge return system.

[0059] In summary, such a sludge return pipe anti-clogging device can effectively prevent sludge from accumulating in the return pipe, ensuring the unobstructed inner diameter of the pipe, thereby improving the efficiency of sludge return and overall sewage treatment, and reducing the cost of frequent maintenance and replacement of pipes by actively preventing blockages.

[0060] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A sludge return pipe anti-clogging device, comprising a sludge return pipe (1), a sludge return pump and an air stripping device (3), wherein one end of the sludge return pipe (1) is installed on the output end of the sludge return pump, and the air outlet end of the air stripping device (3) is located at the sludge inlet of the sludge return pipe (1), characterized in that: It also comprises a disturbance pipe (2), the disturbance pipe (2) being arranged adjacent to the sludge return pipe (1), the air inlet end of the disturbance pipe (2) being connected to the air supply path of the air stripping device (3), an air passage for gas circulation being formed inside the disturbance pipe (2), and at least one air outlet hole (21) being arranged on a side of the disturbance pipe (2) facing the outer wall of the sludge return pipe (1); It also comprises a disturbance ring (22), the disturbance ring (22) is fixedly connected to the disturbance pipe (2), the interior of the disturbance ring (22) is communicated with the air passage of the disturbance pipe (2), the disturbance ring (22) is sleeved on the sludge return pipe (1), the disturbance ring (22) is located on one side of the sludge return pipe (1) and is provided with an air outlet (21), and a plurality of the air outlets (21) are provided; A plurality of disturbance rings (22) are provided, and the plurality of disturbance rings (22) are respectively located at the sludge inlet and the pipe bend of the sludge return pipe (1).

2. The sludge return pipe anti-blocking device according to claim 1 is characterized in that: The gas stripping device (3) comprises a gas stripping device and a gas stripping pipe (31), the gas outlet end of the gas stripping pipe (31) extends into the sludge inlet of the sludge return pipe (1), and the gas inlet end of the gas stripping pipe (31) is connected to the gas stripping device.

3. The sludge return pipe anti-blocking device according to claim 2 is characterized in that: The gas lift pipe (31) is provided with a pipeline swing device (32), and the pipeline swing device (32) comprises a rotary joint (321) and a driving device (322). The gas outlet end of the gas lift pipe (31) is fixedly connected to the rotating end of the rotary joint (321), the gas inlet end of the gas lift pipe (31) is fixedly connected to the fixed end of the rotary joint (321), and the driving device (322) is connected to the rotating end of the rotary joint (321) to drive the gas outlet end of the gas lift pipe (31) to swing. The pipeline swing device (32) is installed in a waterproof box.

4. The sludge return pipe anti-blocking device according to claim 2, characterized in that: The gas outlet end of the gas lift pipe (31) is a conical structure, and a filter screen (311) is installed on the gas outlet end of the gas lift pipe (31).

5. The sludge return pipe anti-clogging device according to any one of claims 1 to 4, characterized in that: It also comprises a pipeline fixing device (4), one end of which is a fixing component, and the other end of which is sleeved on the sludge return pipe (1); a buffer pad (41) is provided on the inner wall of one end of the pipeline fixing device (4) located on the sludge return pipe (1), and the buffer pad (41) is in contact with the outer wall of the sludge return pipe (1).

6. The sludge return pipe anti-clogging device according to any one of claims 1 to 4, characterized in that: The invention also comprises a pipeline elastic fixing device (5), the pipeline elastic fixing device (5) comprising a pipeline limiting ring (51) and an elastic support member (52), one end of the pipeline limiting ring (51) being a fixing member, the annular end of the pipeline limiting ring (51) being sleeved on the sludge return pipe (1), the elastic support member (52) being slidably connected to the inner wall of the annular end of the pipeline limiting ring (51), and the elastic support member (52) being in contact with the outer wall of the sludge return pipe (1).

7. The sludge return pipe anti-blocking device according to claim 6, characterized in that: The elastic support member (52) comprises a support column (521) and an elastic member (522), one end of the elastic member (522) is fixedly connected to the inner wall of the pipeline limiting ring (51), one end of the support column (521) is connected to the other end of the elastic member (522), and the support column (521) is slidably matched with the inner wall of the pipeline limiting ring (51).

8. The sludge return pipe anti-clogging device according to claim 1, characterized in that: It also comprises a hammering device (6), the hammering device (6) comprising a pneumatic hammer (61) and a fixing seat (62), the fixing seat (62) being fixedly mounted on the sludge return pipe (1), the pneumatic hammer (61) being fixedly mounted on the fixing seat (62) so that the piston of the pneumatic hammer (61) can strike the outer wall of the sludge return pipe (1), and the hammering device (6) being mounted in a waterproof box.

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