Sewer sludge stirring treatment equipment and working method thereof

Abstract

The invention discloses municipal sewer cleaning equipment and aims to provide sewer sludge stirring treatment equipment which is high in cleaning efficiency, good in safety in the cleaning process and capable of pretreating sludge in the cleaning process and a working method of the sewer sludge stirring treatment equipment. The stirring blades at the stirring head cut sludge blocks in a sewer to form small sludge blocks which are convenient to collect, the spraying mechanism can spray corresponding sludge treatment solvents at high pressure according to the state of the sludge in the sewer, the solvents sprayed out at high pressure can further clean the sludge on the inner wall of the sewer, the safety performance is good, and the practicability is high. And a suction structure is further arranged in the moving frame, the suction structure can collect sludge blocks cleaned out by the stirring head and conduct pretreatment in the sludge cabin, the overall machining effect is improved, and the municipal sewer cleaning device is suitable for the technical field of municipal sewer cleaning.

Description

Technical Field

[0001] The present invention relates to a municipal sewer cleaning device, and more particularly to a sewer sludge stirring treatment device and a working method thereof. Background Art

[0002] Sewers are essential structures to ensure the normal operation of cities. They account for a very high proportion of underground municipal construction and can effectively prevent water accumulation in cities and avoid obstacles to users' travel. However, sewers will accumulate silt after being used for a period of time. If not handled in time, it will lead to blockage of the sewers. The existing silt treatment method is usually to manually remove the silt and transport it out of the sewer. The cleaning efficiency is low and the labor intensity of the workers is high, which is not suitable for long-term cleaning.

[0003] At present, there is an automatic sludge cleaning device on the market, which uses a stirring head to break up the sludge on the inner wall of the sewer to dredge the sewer. However, the cleaned sludge still needs to be manually carried by workers, and the cleaning speed is slow. At the same time, due to the fast rotation speed of the stirring head, when cleaning the sludge close to the wall, it will cause the stirring head to collide with the wall, causing damage to the stirring head and even causing injuries to people, and the safety is poor. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a sewer sludge stirring treatment equipment and a working method thereof which has high cleaning efficiency, good safety during the cleaning process and can pre-treat the sludge during the cleaning process.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a sewer sludge mixing and treatment equipment, comprising a mobile frame, wherein a mixing structure and a spraying structure are arranged in the mobile frame, wherein the mixing structure comprises a driving device and a mixing device arranged at one end of the driving device, wherein the mixing device comprises a transmission shaft and a mixing head arranged on the transmission shaft, wherein the transmission shaft is rotatably connected to the driving device and at least a portion of the transmission shaft extends to the outside of the mobile frame, wherein the mixing head is arranged at one end of the transmission shaft exposed to the outside of the mobile frame, wherein the spraying structure comprises a high-pressure nozzle arranged on the peripheral side of the mobile frame and a water tank arranged in the mobile frame, and wherein the driving device is configured to drive the mixing structure and the spraying structure to rotate along the central axis of the mobile frame.

[0006] The present invention is further configured as follows: the driving device includes a motor stator and a motor rotor arranged in the motor stator, the motor rotor is fixedly connected to the transmission shaft, an isolation plate is also provided between the driving device and the stirring device, a through hole is provided on the isolation plate for passing the transmission shaft, and a sealing gasket is also provided between the through hole and the transmission shaft.

[0007] The present invention is further configured as follows: a telescopic structure is also provided at the rear end of the mobile frame, the telescopic structure includes a telescopic cylinder and a telescopic rod arranged on the telescopic cylinder, the other end of the telescopic rod is fixedly connected to the driving device, and a return spring is also provided on the telescopic rod, and the telescopic structure is configured to drive the telescopic rod to slide along the length direction of the mobile frame.

[0008] The present invention is further configured as follows: the stirring head comprises stirring blades evenly arranged along the circumferential direction of the transmission shaft.

[0009] The present invention is further configured as follows: a suction structure is also provided in the mobile frame, the suction structure includes a hydraulic pump arranged inside the mobile frame and an absorption pipe arranged on the hydraulic pump, a sludge tank is also provided between the hydraulic pump and the absorption pipe, and the sludge tank is used to store the sludge sucked at the absorption pipe.

[0010] Preferably, a leakage structure is further provided between the water tank and the sludge tank, the leakage structure comprising a seepage plate provided between the water tank and the sludge tank and a permeable membrane provided on the seepage plate, the permeable membrane being configured to allow liquid to pass through and at least block remaining impurities in the water body.

[0011] Preferably, an extrusion structure is further provided in the sludge chamber, and the extrusion structure includes a pressure plate and a driving cylinder, and the driving cylinder is used to push the sludge in the sludge chamber to collide with the leakage structure.

[0012] The present application also provides a working method of a sewer sludge mixing and treatment device, comprising the following steps: S1, a staff member formulates a cleaning plan according to the current location of the sewer and the surrounding environment, including the specifications of the mixing head and the selection of the sludge treatment solvent;

[0013] S2. Install the agitator and fill the water tank with a suitable sludge treatment solvent;

[0014] S3, start the equipment, rotate the motor and the telescopic structure to drive the stirring head to rotate, and move it back and forth along the length direction of the mobile frame, so that the stirring blades break up the sludge on the inner wall of the sewer, and the suction structure in the mobile frame sucks the broken sludge into the sludge tank, and at the same time detects whether there is a lot of sludge residue on the inner wall of the sewer. If so, it is judged that the sludge accumulation in the sewer is serious, and jumps to S4 for sludge flushing operation. Otherwise, it is judged that the sludge treatment of the current sewer is completed, and jumps to S5 for solid-liquid separation control;

[0015] S4, start the spraying structure, so that the sludge treatment solvent in the water tank is sprayed out through the high-pressure nozzle, further flushing the inner wall of the sewer, and the suction structure sucks the flushed product into the sludge tank;

[0016] S5. After the sludge is sucked, the driving cylinder pushes the pressure plate to move toward the leakage structure, so that the sludge collides with the leakage structure, and the water in the sludge tank enters the water tank through the leakage membrane. The sludge is blocked by the leakage membrane and remains in the sludge tank, completing the solid-liquid separation.

[0017] Preferably, a pressure sensor is provided in the sludge tank, and the pressure sensor is used to detect the pressure in the sludge tank. The step S3 also includes a blockage detection of the absorption pipeline, including the following steps: S31, the pressure sensor detects the current pressure of the sludge tank, the pressure value is P, and then the suction structure absorbs the sludge, and the suction time is T;

[0018] S32, after the T time period, the pressure sensor detects the pressure value of the sludge tank as P1, and compares the pressure values. If P1 < 0.5P, it is judged that the current pressure in the sludge tank is low and the absorption pipeline is blocked by sludge blocks, and jumps to S33 to continue detection. Otherwise, if P1 > 0.5P, it is judged that the current equipment is operating normally and continues to absorb the sludge;

[0019] S33, the hydraulic pump turns over and pressurizes the inside of the sludge tank, and the pressurization lasts for T1. After the T1 period, the hydraulic pump resumes forward rotation and sucks the sludge again, and the suction time is T2;

[0020] S34. After the T2 time period, the pressure sensor detects the pressure value in the sludge tank again as P2. If P2>0.5P, it is judged that the blockage in the current absorption pipeline has been restored and the equipment is operating normally. Otherwise, if P2<0.5P, it is judged that the blockage inside the current absorption pipeline is serious. The equipment stops running and notifies the staff for maintenance to clear the blockage in the absorption pipeline.

[0021] Preferably, the sludge treatment solvent in step S1 includes one of Na2Co3 solution, C6H8O7 solution, SDBS solution and OP-10 solution.

[0022] By adopting the above technical scheme, the beneficial effects are as follows: 1. By setting a stirring structure and a spraying mechanism, the stirring structure has a stirring head for loosening the sludge blocks, the stirring head is connected to the rotating motor through a transmission shaft, the transmission motor is used to drive the stirring head to rotate, and the stirring blades at the stirring head cut the sludge blocks in the sewer to form smaller sludge blocks, thereby facilitating subsequent collection and treatment. At the same time, during the rotation of the stirring head, the telescopic structure can synchronously drive the transmission shaft to move back and forth along the length direction of the mobile frame, further improving the sludge treatment effect, and the spraying mechanism can spray the corresponding sludge treatment solvent at high pressure according to the state of the sludge in the sewer, and the solvent sprayed at high pressure can further clean the sludge on the inner wall of the sewer, preventing the stirring head from contacting the inner wall of the sewer to cause damage to the equipment, and having good safety performance. By spraying the corresponding sludge treatment solvent, the cleaning effect can be improved and the difficulty of sludge cleaning can be reduced. A suction structure is also provided in the mobile frame, and the suction structure can collect the smaller sludge blocks cleaned by the stirring head and pre-treat them inside the sludge tank, thereby improving the overall processing effect.

[0023] 2. Furthermore, the driving device includes a motor stator and a motor rotor arranged in the motor stator, the motor rotor is fixedly connected to the transmission shaft, and the stirring device is driven by the driving device to realize the rotation of the stirring head. At the same time, due to the presence of sewage in the sewer, in order to prevent liquid from entering the driving device and causing damage to the device, an isolation plate is provided between the driving device and the stirring device, and a through hole for passing the transmission shaft is provided on the isolation plate, and in order to prevent liquid from entering the interior of the driving device from the through hole, a sealing gasket is provided between the through hole and the transmission shaft, which ensures the transmission effect while making the driving device have a higher sealing performance.

[0024] 3. At the same time, in order to collect and process the smaller sludge blocks that are broken and dropped by the stirring head, a suction structure is provided in the mobile frame, and the suction structure includes a hydraulic pump arranged in the mobile frame and an absorption pipe arranged on the hydraulic pump. When the hydraulic pump runs, a vacuum-like cavity with a relatively low pressure is formed in the sludge tank and a relatively large suction force is formed at the pipe mouth of the absorption pipe, thereby sucking the sludge blocks outside the mobile frame into the sludge tank for storage, without the need for additional manual cleaning, and the collection efficiency is high.

[0025] 4. In order to pre-treat the sludge in the sludge tank, a leakage structure and an extrusion structure are provided in the sludge tank. The leakage structure can pass liquid and at least block other impurities in the water body. The extrusion structure is used to push the sludge blocks in the sludge tank to collide with the leakage structure. Under the pressure of the extrusion structure, the water in the sludge blocks passes through the leakage membrane in the leakage structure and enters the water tank. At the same time, the impurities in the sludge blocks and the water body are blocked by the leakage membrane, thereby completing the filtration of the water in the sludge tank and reducing the water content of the sludge blocks in the sludge tank. At the same time, the liquid in the water tank can also be supplemented, and the use effect is good. At the same time, a water seepage plate is also provided in the leakage structure to enhance the strength of the leakage structure, thereby preventing the leakage membrane from being damaged during the squeezing of the sludge blocks.

[0026] 5. In the process of treating sewer sludge in the present application, the specifications of the stirring head and the type of sludge treatment solvent are selected in advance. For example, when the sewer is located close to a restaurant-dense area, the cause of sewer blockage is usually grease. At this time, a Na2Co3 solution can be used to remove the grease in the sewer sludge. When the sewer is located close to industrial clusters such as chemical plants, the sewer usually contains more heavy metals, and the sludge needs to be treated in advance to reduce the harm. At this time, a C6H8O7 solution needs to be used. The solution is an organic acid and can form a stable chelate with the metal ions in the sludge to dissolve it from the sludge, thereby achieving the purpose of removing heavy metal ions. For example, when the sewer is close to a biotechnology research institute, the sewer sludge will contain biological impurities. By using SDBS solution or OP-10 solution, it can effectively remove oil and organic debris in the sludge, and can have a good removal effect on biological pollutants in the sludge. The above solutions are all weak acids / weak bases, and are non-toxic and pollution-free when used, and have good safety. At the same time, when the sludge blocks are absorbed In the process of entering the sludge tank, when the sludge on the inner wall of the sewer is cleaned by the stirring head, the volume of some sludge blocks is large. In the process of sucking the sludge blocks by the suction structure, the sludge blocks will block the inside of the absorption pipe. In order to conveniently detect the above situation, a pressure sensor is arranged in the sludge tank, and the pressure sensor can detect the pressure in the sludge tank. When the absorption pipe is blocked, the hydraulic pump continues to pump air, causing the air pressure in the sludge tank to drop. When the pressure in the sludge tank drops to a certain value, the suction pipe needs to be dredged. By reversing the hydraulic pump, the hydraulic pump's pumping is converted into an air intake operation in the sludge tank, and the air pressure in the sludge tank increases, thereby pushing out the sludge blocks in the suction pipe. After continuous pressurization for T1 time, the air is pumped again and the pressure in the sludge tank is detected. If the pressure value is still small, it means that the suction pipe is seriously blocked and needs to be manually dredged by the staff. The above scheme can automatically determine the sludge blockage in the suction pipe and can actively dredge the pipe. The degree of automation is high and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A cross-sectional view of an embodiment of a sewage sludge stirring treatment device and a working method thereof according to the present invention;

[0028] Figure 2 A flow chart of a working method of a sewage sludge stirring treatment device and a working method embodiment of the present invention;

[0029] Figure 3 A blockage detection flow chart of an embodiment of a sewer sludge stirring treatment device and a working method thereof according to the present invention;

[0030] 1. The reference numerals in the figure are as follows: 1. movable frame; 2. stirring structure; 3. spray structure; 31. high-pressure nozzle; 32. water tank; 4. driving device; 41. motor stator; 42. motor rotor; 43. isolation plate; 44. through hole; 45. sealing gasket; 5. stirring device; 51. transmission shaft; 52. stirring head; 53. stirring blade; 6. telescopic structure; 61. telescopic cylinder; 62. telescopic rod; 63. reset spring; 7. suction structure; 71. hydraulic pump; 72. absorption pipe; 73. sludge tank; 8. leakage structure; 81. water seepage plate; 82. permeable membrane; 9. extrusion structure; 91. pressure plate; 92. driving cylinder. DETAILED DESCRIPTION

[0031] Reference Figures 1 to 3 The present invention further describes a sewage sludge stirring treatment device and a working method embodiment thereof.

[0032] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0033] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0034] A sewer sludge mixing and processing equipment comprises a mobile frame 1, wherein a mixing structure 2 and a spraying structure 3 are arranged inside the mobile frame 1, wherein the mixing structure 2 comprises a driving device 4 and a mixing device 5 arranged at one end of the driving device 4, wherein the mixing device 5 comprises a transmission shaft 51 and a mixing head 52 arranged on the transmission shaft 51, wherein the transmission shaft 51 is rotatably connected to the driving device 4 and at least a portion of the transmission shaft 51 extends to the outside of the mobile frame 1, wherein the mixing head 52 is arranged at one end of the transmission shaft 51 exposed to the outside of the mobile frame 1, wherein the spraying structure 3 comprises a high-pressure nozzle 31 arranged on the peripheral side of the mobile frame 1 and a water tank 32 arranged inside the mobile frame 1, wherein the driving device 4 is configured to drive the mixing structure 2 and the spraying structure 3 to rotate along the central axis of the mobile frame 1.

[0035] The driving device 4 includes a motor stator 41 and a motor rotor 42 arranged in the motor stator 41, and the motor rotor 42 is fixedly connected to the transmission shaft 51. An isolation plate 43 is also provided between the driving device 4 and the stirring device 5. The isolation plate 43 is provided with a through hole 44 for passing the transmission shaft 51, and a sealing gasket 45 is also provided between the through hole 44 and the transmission shaft 51.

[0036] A telescopic structure 6 is also provided at the rear end of the mobile frame 1, and the telescopic structure 6 includes a telescopic cylinder 61 and a telescopic rod 62 arranged on the telescopic cylinder 61. The other end of the telescopic rod 62 is fixedly connected to the driving device 4. A return spring 63 is also provided on the telescopic rod 62. The telescopic structure 6 is configured to drive the telescopic rod 62 to slide along the length direction of the mobile frame 1.

[0037] The stirring head 52 includes stirring blades 53 evenly arranged along the circumferential direction of the transmission shaft 51 .

[0038] A suction structure 7 is also provided in the mobile frame 1, and the suction structure 7 includes a hydraulic pump 71 arranged inside the mobile frame 1 and an absorption pipe 72 arranged on the hydraulic pump 71. A sludge tank 73 is also provided between the hydraulic pump 71 and the absorption pipe 72, and the sludge tank 73 is used to store the sludge sucked at the absorption pipe 72.

[0039] Preferably, a leakage structure 8 is further provided between the water tank 32 and the sludge tank 73, and the leakage structure 8 includes a seepage plate 81 arranged between the water tank 32 and the sludge tank 73 and a permeable membrane 82 arranged on the seepage plate 81, and the permeable membrane 82 is configured to allow liquid to pass through and at least block remaining impurities in the water body.

[0040] Preferably, an extrusion structure 9 is further provided in the silt chamber 73 , and the extrusion structure 9 includes a pressure plate 91 and a driving cylinder 92 , and the driving cylinder 92 is used to push the silt in the silt chamber 73 to collide with the leakage structure 8 .

[0041] Preferably, the sludge treatment solvent in step S1 includes one of Na2Co3 solution, C6H8O7 solution, SDBS solution and OP-10 solution.

[0042] By setting up a stirring structure 2 and a spraying mechanism, the stirring structure 2 has a stirring head 52 for loosening the sludge blocks, the stirring head 52 is connected to the rotating motor through a transmission shaft 51, the transmission motor is used to drive the stirring head 52 to rotate, and the stirring blades 53 at the stirring head 52 cut the sludge blocks in the sewer into smaller sludge blocks, thereby facilitating subsequent collection and treatment. At the same time, during the rotation of the stirring head 52, the telescopic structure 6 can synchronously drive the transmission shaft 51 to make a reciprocating motion along the length direction of the mobile frame 1, further improving the sludge treatment effect, and the The spraying mechanism can spray the corresponding sludge treatment solvent at high pressure according to the state of the sludge in the sewer. The solvent sprayed at high pressure can further clean the sludge on the inner wall of the sewer, prevent the stirring head 52 from contacting the inner wall of the sewer and causing damage to the equipment. It has good safety performance, and by spraying the corresponding sludge treatment solvent, the cleaning effect can be improved and the difficulty of sludge cleaning can be reduced. A suction structure 7 is also provided in the movable frame 1. The suction structure 7 can collect the smaller sludge blocks cleaned by the stirring head 52 and pre-treat them inside the sludge tank 73, thereby improving the overall processing effect.

[0043] Furthermore, the driving device 4 includes a motor stator 41 and a motor rotor 42 arranged in the motor stator 41, the motor rotor 42 is fixedly connected to the transmission shaft 51, and the stirring device 5 is driven by the driving device 4 to realize the rotation of the stirring head 52. At the same time, due to the presence of sewage in the sewer, in order to prevent liquid from entering the driving device 4 and causing damage to the device, an isolation plate 43 is provided between the driving device 4 and the stirring device 5, and a through hole 44 for passing the transmission shaft 51 is provided on the isolation plate 43, and in order to prevent liquid from entering the interior of the driving device 4 from the through hole 44, a sealing gasket 45 is provided between the through hole 44 and the transmission shaft 51, which ensures the transmission effect while making the driving device 4 have a higher sealing performance.

[0044] At the same time, in order to collect and process the smaller sludge blocks that are broken and dropped by the stirring head 52, a suction structure 7 is provided in the mobile frame 1. The suction structure 7 includes a hydraulic pump 71 arranged in the mobile frame 1 and an absorption pipe 72 arranged on the hydraulic pump 71. The hydraulic pump 71 runs and forms a vacuum-like cavity with a lower pressure in the sludge chamber 73 and forms a larger suction force at the pipe mouth of the absorption pipe 72, thereby sucking the sludge blocks outside the mobile frame 1 into the sludge chamber 73 for storage. No additional manual cleaning is required, and the collection efficiency is high.

[0045] Furthermore, in order to pre-treat the sludge in the sludge tank 73, a leakage structure 8 and an extrusion structure 9 are provided in the sludge tank 73. The leakage structure 8 can pass liquid and at least block other impurities in the water body. The extrusion structure 9 is used to push the sludge blocks in the sludge tank 73 to collide with the leakage structure 8. Under the pressure of the extrusion structure 9, the water in the sludge blocks passes through the leakage membrane in the leakage structure 8 and enters the water tank 32. At the same time, the sludge blocks and impurities in the water body are blocked by the leakage membrane, thereby completing the filtration of the water in the sludge tank 73 and reducing the water content of the sludge blocks in the sludge tank 73. At the same time, the liquid in the water tank 32 can also be supplemented, and the use effect is good. At the same time, a water seepage plate 81 is also provided in the leakage structure 8 to enhance the strength of the leakage structure 8, thereby preventing the leakage membrane from being damaged during the squeezing of the sludge blocks.

[0046] The present application also provides a working method of a sewer sludge mixing and treatment device, comprising the following steps: S1, a staff member formulates a cleaning plan according to the current location of the sewer and the surrounding environment, including the specifications of the mixing head and the selection of the sludge treatment solvent;

[0047] S2. Install the agitator and fill the water tank with a suitable sludge treatment solvent;

[0048] S3, start the equipment, rotate the motor and the telescopic structure to drive the stirring head to rotate, and move it back and forth along the length direction of the mobile frame, so that the stirring blades break up the sludge on the inner wall of the sewer, and the suction structure in the mobile frame sucks the broken sludge into the sludge tank, and at the same time detects whether there is a lot of sludge residue on the inner wall of the sewer. If so, it is judged that the sludge accumulation in the sewer is serious, and jumps to S4 for sludge flushing operation. Otherwise, it is judged that the sludge treatment of the current sewer is completed, and jumps to S5 for solid-liquid separation control;

[0049] S4, start the spraying structure, so that the sludge treatment solvent in the water tank is sprayed out through the high-pressure nozzle, further flushing the inner wall of the sewer, and the suction structure sucks the flushed product into the sludge tank;

[0050] S5. After the sludge is sucked, the driving cylinder pushes the pressure plate to move toward the leakage structure, so that the sludge collides with the leakage structure, and the water in the sludge tank enters the water tank through the leakage membrane. The sludge is blocked by the leakage membrane and remains in the sludge tank, completing the solid-liquid separation.

[0051] Preferably, a pressure sensor is provided in the sludge tank, and the pressure sensor is used to detect the pressure in the sludge tank. The step S3 also includes a blockage detection of the absorption pipeline, including the following steps: S31, the pressure sensor detects the current pressure of the sludge tank, the pressure value is P, and then the suction structure absorbs the sludge, and the suction time is T;

[0052] S32, after the T time period, the pressure sensor detects the pressure value of the sludge tank as P1, and compares the pressure values. If P1 < 0.5P, it is judged that the current pressure in the sludge tank is low and the absorption pipeline is blocked by sludge blocks, and jumps to S33 to continue detection. Otherwise, if P1 > 0.5P, it is judged that the current equipment is operating normally and continues to absorb the sludge;

[0053] S33, the hydraulic pump turns over and pressurizes the inside of the sludge tank, and the pressurization lasts for T1. After the T1 period, the hydraulic pump resumes forward rotation and sucks the sludge again, and the suction time is T2;

[0054] S34. After the T2 time period, the pressure sensor detects the pressure value in the sludge tank again as P2. If P2>0.5P, it is judged that the blockage in the current absorption pipeline has been restored and the equipment is operating normally. Otherwise, if P2<0.5P, it is judged that the blockage inside the current absorption pipeline is serious. The equipment stops running and notifies the staff for maintenance to clear the blockage in the absorption pipeline.

[0055] In the process of treating sewer sludge in the present application, the specifications of the stirring head 52 and the type of sludge treatment solvent are selected in advance. For example, when the sewer is located near a restaurant-dense area, the cause of sewer blockage is usually grease. At this time, a Na2Co3 solution can be selected to remove the grease in the sewer sludge. When the sewer is located near an industrial cluster such as a chemical plant, the sewer usually contains more heavy metals, and the sludge needs to be treated in advance to reduce the harm. At this time, a C6H8O7 solution needs to be selected. This solution is an organic acid and can It forms a stable chelate with the metal ions in the sludge, dissolving it from the sludge to achieve the purpose of removing heavy metal ions. For example, when the sewer is close to the Biotechnology Research Institute, the sludge in the sewer will contain biological impurities. By using SDBS solution or OP-10 solution, it can effectively remove oil and organic debris in the sludge, and can have a good removal effect on biological pollutants in the sludge. The above solutions are all weak acids / weak bases, and are non-toxic and pollution-free when used, with good safety. At the same time, in the process of sucking the sludge blocks into the sludge tank 73, due to the passage When the sludge on the inner wall of the sewer is cleaned by the mixing head 52, some sludge blocks are large in size. In the process of sucking the sludge blocks by the suction structure 7, the sludge blocks will block the inside of the absorption pipe 72. In order to conveniently detect the above situation, a pressure sensor is arranged in the sludge tank 73. The pressure sensor can detect the pressure in the sludge tank 73. When the absorption pipe 72 is blocked, the hydraulic pump 71 continues to pump air, causing the air pressure in the sludge tank 73 to drop. When the pressure in the sludge tank 73 drops to a certain value, it is necessary to To clear the suction pipe, the hydraulic pump 71 is reversed and the air extraction of the hydraulic pump 71 is converted into an air intake operation in the sludge chamber 73. The air pressure in the sludge chamber 73 is increased, thereby pushing out the sludge blocks in the suction pipe. After continuous pressurization for T1 time, air is extracted again and the pressure in the sludge chamber 73 is tested. If the pressure value is still too low, it means that the suction pipe is seriously blocked and needs to be manually cleared by the staff. The above scheme can automatically determine the sludge blockage in the suction pipe and can actively clear the pipe. It has a high degree of automation and good effect.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage sludge mixing and processing device, comprising a mobile frame (1), characterized in that: The movable frame (1) is provided with a stirring structure (2) and a spraying structure (3). The stirring structure (2) comprises a driving device (4) and a stirring device (5) arranged at one end of the driving device (4). The stirring device (5) comprises a transmission shaft (51) and a stirring head (52) arranged on the transmission shaft (51). The transmission shaft (51) is rotatably connected to the driving device (4) and at least a portion of the transmission shaft (51) extends to the outside of the movable frame (1). The stirring head (52) is arranged at one end of the transmission shaft (51) exposed to the outside of the movable frame (1). The spraying structure (3) comprises a high-pressure spray head (31) arranged on the peripheral side of the movable frame (1) and a water tank (32) arranged in the movable frame (1). The driving device (4) is configured to drive the stirring structure (2) and the spraying structure (3) to rotate along the central axis of the movable frame (1).

2. A sewage sludge stirring treatment equipment according to claim 1, characterized in that: The driving device (4) comprises a motor stator (41) and a motor rotor (42) arranged in the motor stator (41); the motor rotor (42) is fixedly connected to a transmission shaft (51); an isolation plate (43) is further provided between the driving device (4) and the stirring device (5); a through hole (44) for passing the transmission shaft (51) is provided on the isolation plate (43); and a sealing gasket (45) is further provided between the through hole (44) and the transmission shaft (51).

3. The sewage sludge stirring treatment equipment according to claim 1, characterized in that: The rear end of the mobile frame (1) is also provided with a telescopic structure (6), the telescopic structure (6) comprising a telescopic cylinder (61) and a telescopic rod (62) arranged on the telescopic cylinder (61), the other end of the telescopic rod (62) is fixedly connected to the driving device (4), and a return spring (63) is also provided on the telescopic rod (62). The telescopic structure (6) is configured to drive the telescopic rod (62) to slide along the length direction of the mobile frame (1).

4. The sewage sludge stirring treatment equipment according to claim 1, characterized in that: The stirring head (52) comprises stirring blades (53) uniformly arranged along the circumferential direction of the transmission shaft (51).

5. The sewage sludge stirring treatment equipment according to claim 1, characterized in that: The movable frame (1) is also provided with a suction structure (7), the suction structure (7) comprising a hydraulic pump (71) arranged inside the movable frame (1) and a suction pipe (72) arranged on the hydraulic pump (71), a sludge tank (73) is also provided between the hydraulic pump (71) and the suction pipe (72), the sludge tank (73) is used to store sludge sucked from the suction pipe (72).

6. A sewage sludge stirring treatment equipment according to claim 5, characterized in that: A leakage structure (8) is also provided between the water tank (32) and the sludge tank (73), the leakage structure (8) comprising a water seepage plate (81) provided between the water tank (32) and the sludge tank (73) and a permeable membrane (82) provided on the water seepage plate (81), the permeable membrane (82) being configured to allow liquid to pass through and at least block the remaining impurities in the water body.

7. A sewage sludge stirring treatment equipment according to claim 6, characterized in that: The sludge chamber (73) is also provided with an extrusion structure (9), wherein the extrusion structure (9) comprises a pressing plate (91) and a driving cylinder (92), wherein the driving cylinder (92) is used to push the sludge in the sludge chamber (73) to contact the leakage structure (8).

8. A working method applicable to a sewage sludge stirring treatment device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. The staff formulates a cleaning plan based on the current location of the sewer and the surrounding environment, including the specifications of the mixing head and the selection of sludge treatment solvent; S2. Install the agitator and fill the water tank with a suitable sludge treatment solvent; S3, start the equipment, rotate the motor and the telescopic structure to drive the stirring head to rotate and move it back and forth along the length direction of the mobile frame, so that the stirring blades break up the sludge on the inner wall of the sewer, and the suction structure in the mobile frame sucks the broken sludge into the sludge tank, and at the same time detects whether there is a lot of sludge residue on the inner wall of the sewer. If so, it is judged that the sludge accumulation in the sewer is serious, and jumps to S4 for sludge flushing operation. Otherwise, it is judged that the sludge treatment of the current sewer is completed, and jumps to S5 for solid-liquid separation control; S4, start the spraying structure, so that the sludge treatment solvent in the water tank is sprayed out through the high-pressure nozzle, further flushing the inner wall of the sewer, and the suction structure sucks the flushed product into the sludge tank; S5. After the sludge is sucked, the driving cylinder pushes the pressure plate to move toward the leakage structure, so that the sludge collides with the leakage structure, and the water in the sludge tank enters the water tank through the leakage membrane. The sludge is blocked by the leakage membrane and remains in the sludge tank, completing the solid-liquid separation.

9. The working method of the sewage sludge stirring treatment equipment according to claim 8, characterized in that: The sludge tank is provided with a pressure sensor, and the pressure sensor is used to detect the pressure in the sludge tank. The step S3 also includes a blockage detection of the absorption pipeline. The method comprises the following steps: S31, a pressure sensor detects the current pressure in the sludge chamber, the pressure value is P, and then the suction structure sucks the sludge, and the suction time is T; S32, after the T time period, the pressure sensor detects the pressure value of the sludge tank as P1, and compares the pressure values. If P1 < 0.5P, it is judged that the current pressure in the sludge tank is low and the absorption pipeline is blocked by sludge blocks, and jumps to S33 to continue detection. Otherwise, if P1 > 0.5P, it is judged that the current equipment is operating normally and continues to absorb the sludge; S33, the hydraulic pump reverses and pressurizes the inside of the sludge tank, and the pressurization lasts for T1. After the T1 period, the hydraulic pump resumes forward rotation and sucks the sludge again, and the suction time is T2; S34. After the T2 time period, the pressure sensor detects the pressure value in the sludge tank again as P2. If P2>0.5P, it is judged that the blockage in the current absorption pipeline has been restored and the equipment is operating normally. Otherwise, if P2<0.5P, it is judged that the blockage inside the current absorption pipeline is serious. The equipment stops running and notifies the staff for maintenance to clear the blockage in the absorption pipeline.

10. The working method of the sewage sludge stirring treatment equipment according to claim 8, characterized in that: The sludge treatment solvent in step S1 includes one of Na2Co3 solution, C6H8O7 solution, SDBS solution and OP-10 solution.

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