Reaction precipitation tank integrated with solid-liquid separation mechanism

Abstract

The present invention relates to the technical field of solid-liquid separation, and discloses a reaction precipitation tank integrated with a solid-liquid separation mechanism, the reaction precipitation tank comprises a tank body, the bottom of the tank body is provided with a mounting hole, the mounting hole is fixedly provided with a discharge pipe, the discharge pipe is internally provided with a valve, and the tank body is internally provided with a liquid extraction assembly; the liquid pumping assembly comprises a liquid pumping pipe, a movable pipe and a fixed pipe, the liquid pumping pipe is vertically arranged in the tank body, the bottom end of the liquid pumping pipe extends into the discharging pipe, the liquid pumping pipe is coaxially sleeved with the fixed pipe, the upper end of the fixed pipe is fixedly connected to the inner wall of the tank body, and the outer wall of the fixed pipe is sleeved with the movable pipe; an annular cavity is formed among the movable pipe, the fixed pipe and the liquid pumping pipe, and a continuous annular liquid flow channel is formed between the particle solid layer and the liquid pumping pipe through the lifting motion of the movable pipe, so that main body clear liquid in the tank is efficiently recycled, and the liquid pumping efficiency is improved; and meanwhile, a directional seepage and discharge path is provided for interstitial water retained in internal pores of the particle accumulation layer.

Description

A reaction sedimentation tank with an integrated solid-liquid separation mechanism Technical Field

[0001] This invention relates to the field of solid-liquid separation, and more specifically, to a reaction sedimentation tank with an integrated solid-liquid separation mechanism. Background Technology

[0002] In many industrial processes such as chemical production, wastewater treatment, and mineral extraction, it is often necessary to treat solid-liquid mixtures. One common process is to inject the solid-liquid mixture to be treated, such as wastewater containing suspended solids or settleable particles, crystallizing slurry, or mineral slurry, into a reaction sedimentation tank. Inside the tank, by adding reagents, adjusting the pH value, flocculation reaction, or natural gravity sedimentation, the solid matter is precipitated and accumulated at the bottom of the tank, forming a solid layer. These solid layers are usually sludge or granular sediments, while the upper layer forms a clear liquid.

[0003] In existing reaction sedimentation tanks, after the sedimentation reaction is completed, the upper layer of clear liquid is usually extracted by pump pipe or overflow. However, when the bottom solid formed by sedimentation is particulate material with a certain particle size and porosity, such as crystal particles, gravel, or some larger flocs after flocculation, the particulate precipitate is generally discharged from the bottom discharge port of the tank. There are a lot of tiny gaps between these solid particles. After the upper clear liquid is extracted, it is difficult to extract the interstitial water in the precipitate by pump pipe or overflow. In existing methods, a filter screen is also installed at the bottom of the discharge port to intercept the particulate precipitate, while the interstitial water is discharged from the bottom discharge port. However, because some particulate precipitates are small in size, the accumulated particulate precipitate will clog the filter screen, making it difficult for the interstitial water to be discharged from the discharge port. The presence of liquid in these gaps results in the solid material after separation still having a high moisture content. Summary of the Invention

[0004] This invention provides a reaction sedimentation tank with an integrated solid-liquid separation mechanism, including a tank body. An installation hole is provided at the bottom of the tank body, and a discharge pipe is fixedly installed at the installation hole. A valve is installed inside the discharge pipe. A liquid extraction assembly is provided inside the tank body. The liquid extraction assembly includes a liquid extraction pipe, a movable pipe, and a fixed pipe. The liquid extraction pipe is vertically arranged inside the tank body, and its bottom end extends into the discharge pipe. The fixed pipe is coaxially sleeved outside the liquid extraction pipe, and its upper end is fixedly connected to the inner wall of the tank body. The movable pipe is sleeved on the outer wall of the fixed pipe. An annular chamber is formed between the movable pipe, the fixed pipe, and the liquid extraction pipe.

[0005] In a preferred embodiment, the tank further includes a support frame, a liquid outlet pipe, and a top cover. The support frame is fixedly connected to the bottom of the tank, the top of the tank is fixedly connected to the top cover, and a conical mounting cavity is formed between the tank and the top cover. The liquid outlet pipe is fixedly connected to the top of the top cover.

[0006] In a preferred embodiment, the bottom of the tank has a conical structure.

[0007] In a preferred embodiment, the liquid extraction assembly further includes a lead screw and a mounting block. The mounting block is fixedly connected to the top of the movable tube. A threaded hole is provided inside the mounting block. The lower end of the lead screw passes through the threaded hole and forms a threaded engagement with the mounting block through the threaded hole. A first motor is fixedly installed inside the top cover. The output end of the first motor is connected to the upper end of the lead screw.

[0008] In a preferred embodiment, a lifting and rotating assembly is provided inside the tank, located directly below the liquid extraction tube. The lifting and rotating assembly includes a filter screen and a mesh frame. The mesh frame is located at the bottom of the tank and fits against the bottom surface of the tank. The filter screen is installed inside the mesh frame, and the mesh frame is connected to the bottom of the movable tube.

[0009] In a preferred embodiment, the lifting and rotating assembly further includes a mounting plate, a gear plate, a second motor, and a stirring rod. A through hole is provided at the top of the tank. The mounting plate is rotatably connected to the inside of the through hole. The peripheral side of the mounting plate meshes with the gear plate. The bottom of the gear plate is rotatably connected to the top of the tank. The top of the gear plate is fixedly connected to the output end of the second motor. The second motor is fixedly connected to the inner wall of the top cover. The stirring rod is fixedly connected to the outer wall of the movable tube.

[0010] In a preferred embodiment, the liquid aspiration assembly further includes a first motor, the top end of a lead screw passes through the mounting plate, and the top end of the lead screw is fixedly connected to the output end of the first motor. The first motor is fixedly connected to the mounting plate, and the bottom of the mounting plate is fixedly connected to the top of the fixing tube.

[0011] In a preferred embodiment, a limiting component is provided at the center of the space frame. The limiting component includes a top plate and a bottom plate. The top plate is fixedly connected to the space frame. A sliding groove is provided at the bottom of the top plate. The sliding groove is arranged in a ring. A limiting groove is provided inside the sliding groove. A limiting block is fixedly connected to the top of the bottom plate. The limiting block is rotatably connected inside the sliding groove, and the limiting block abuts against the limiting groove.

[0012] In a preferred embodiment, the limiting component further includes an electromagnetic pin, a slot is provided on the side wall of the base plate, the output end of the electromagnetic pin is movably inserted into the slot, and a connecting block is installed on the outside of the electromagnetic pin, with one end of the connecting block connected to the inner wall of the movable tube.

[0013] In a preferred embodiment, a discharge assembly is installed on the bottom side of the outer wall of the movable tube. The discharge assembly includes a connecting rod, the bottom end of which is fixedly connected to the top of the top plate. The connecting rod is arranged vertically. A sliding groove is opened on the outer side of the movable tube. A stop block is fixedly installed at the bottom of the sliding groove. The connecting rod is located in the sliding groove and forms a sliding guide with the sliding groove. The top of the connecting rod is adapted to the stop block.

[0014] The beneficial effects of this invention are as follows: 1. This invention forms a continuous annular liquid flow channel between the particle solid layer and the liquid extraction pipe through the lifting movement of the movable tube. This not only achieves efficient recovery of the main clear liquid in the tank, but also provides a directional seepage and discharge path for the interstitial water retained in the pores inside the particle accumulation layer. This structure can achieve deep dehydration without direct mechanical compression of the particle layer, effectively avoiding the problems of particle breakage or compaction and pore blockage, and significantly reducing the final water content of the solid product. At the same time, the structure is compact and the operation is continuous, realizing integrated and efficient treatment of sedimentation, clear liquid separation and particle layer interstitial liquid removal in a single tank.

[0015] 2. The lifting component provided in this invention can quickly convert the upward force of the movable tube into a lifting force on the filter screen and the entire sedimentation layer when the drainage channel is blocked, actively reconstructing the drainage space and ensuring that the interparticle water and the upper residual clear liquid are effectively discharged under controlled conditions. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 is a schematic diagram of the internal structure of the tank and the liquid extraction assembly of the present invention.

[0018] Figure 3 is an enlarged view of point A in Figure 2 of this invention.

[0019] Figure 4 is a cross-sectional structural diagram of the present invention.

[0020] Figure 5 is a schematic diagram of the internal structure of the tank of the present invention.

[0021] Figure 6 is an enlarged view of section B in Figure 5 of this invention.

[0022] Figure 7 is a schematic diagram of the liquid extraction assembly and the lifting and rotating assembly of the present invention.

[0023] Figure 8 is an enlarged view of point C in Figure 7 of this invention.

[0024] Figure 9 is a schematic diagram of the limiting component structure of the present invention.

[0025] Figure 10 is a schematic diagram of the top plate structure of the present invention.

[0026] In the diagram: 1. Tank body; 101. Support frame; 102. Liquid outlet pipe; 103. Top cover; 104. Discharge pipe; 105. Infusion pipe; 2. Liquid extraction assembly; 201. Liquid extraction pipe; 202. Movable pipe; 203. Fixed pipe; 204. First motor; 205. Lead screw; 206. Mounting block; 3. Lifting and rotating assembly; 301. Filter screen; 302. Frame; 303. Mounting plate; 304. Gear plate; 305. Second motor; 306. Stirring rod; 4. Limiting assembly; 401. Connecting block; 402. Electromagnetic pin; 403. Top plate; 404. Slide groove; 405. Limiting groove; 406. Bottom plate; 407. Limiting block; 5. Discharge assembly; 501. Stop block; 502. Sliding groove; 503. Connecting rod. Detailed Implementation

[0027] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0028] As shown in Figures 1, 2, and 3, a reaction sedimentation tank with an integrated solid-liquid separation mechanism includes a tank body 1. A mounting hole is provided at the bottom of the tank body 1, and a discharge pipe 104 is fixedly installed at the mounting hole. A valve is installed inside the discharge pipe 104. A liquid extraction assembly 2 is provided inside the tank body 1. The liquid extraction assembly 2 includes a liquid extraction pipe 201, a movable pipe 202, and a fixed pipe 203. The bottom end of the liquid extraction pipe 201 extends into the discharge pipe 104. The fixed pipe 203 is coaxially sleeved outside the liquid extraction pipe 201, and its upper end is fixedly connected to the inner wall of the tank body 1. The movable pipe 202 is sleeved on the outer wall of the fixed pipe 203. An annular chamber is formed between the movable pipe 202, the fixed pipe 203, and the liquid extraction pipe 201.

[0029] It should be noted that the central axis of the liquid extraction pipe 201, the central axis of the movable pipe 202, and the central axis of the fixed pipe 203 are all collinear with the central axis of the tank body 1. The bottom opening of the liquid extraction pipe 201 is located above the valve and maintains a certain distance from the valve. The valve is an electrically controlled valve, which is existing technology and will not be described in detail.

[0030] The tank body 1 also includes a support frame 101, a liquid outlet pipe 102, and a top cover 103. The support frame 101 is fixedly connected to the bottom of the tank body 1, and the top of the tank body 1 is fixedly connected to the top cover 103, forming a conical mounting cavity between the tank body 1 and the top cover 103. The liquid outlet pipe 102 is fixedly connected to the top of the top cover 103, and the bottom of the tank body 1 is a conical structure. The support frame 101 is located at the bottom of the entire device and is used to support and fix the tank body 1 above. The top cover 103 is located directly above the tank body 1, and the two are coaxially sealed together by means of flanges or welding. The conical mounting cavity formed at the connection between the tank body 1 and the top cover 103 surrounds the central axis of the tank body 1. The liquid outlet pipe 102 is located at the center of the top of the top cover 103 and serves as the main outlet for the upper clear liquid. The upper clear liquid is extracted by connecting the liquid outlet pipe 102 to a suction pump. The bottom of the tank 1 is designed as an inwardly tapering conical structure, which facilitates the aggregation of solid particles towards the center, as shown in Figure 4. An infusion tube 105 is also fixedly installed on the outer wall of the tank 1. The infusion tube 105 passes through the tank 1 and communicates with the interior of the tank 1. The liquid extraction assembly 2 also includes a lead screw 205 and a mounting block 206. The mounting block 206 is fixedly connected to the top of the movable tube 202. A threaded hole is opened inside the mounting block 206. The lower end of the lead screw 205 passes through the threaded hole and forms a threaded engagement with the mounting block 206 through the threaded hole. A first motor 204 is fixedly installed inside the top cover 103. The output end of the first motor 204 is connected to the upper end of the lead screw 205. The mounting block 206 is rigidly connected to the outer wall of the movable tube 202 by welding or bolt fastening. The length direction of the lead screw 205 is parallel to the central axis of the liquid extraction tube 201.

[0031] In this embodiment, firstly, before the solid-liquid mixture is fed into the tank 1, the bottom end of the extraction pipe 201 is located inside the discharge pipe 104, and the movable pipe 202 is coaxially sleeved outside the extraction pipe 201, thereby isolating the portion of the extraction pipe 201 inside the tank 1 from the main space inside the tank 1. That is, the annular chamber is in a sealed state at this time. The annular chamber and the internal space of the tank 1 are separated by the movable pipe 202 and the fixed pipe 203. The solid-liquid mixture to be processed is injected into the tank 1 through the delivery pipe 105 to complete the reaction and precipitation. After sedimentation, the particulate solids layer accumulates at the conical bottom of tank 1, while a clear liquid forms on top. Then, the first motor 204 is activated, driving the lead screw 205 to rotate. The rotation of the lead screw 205 causes the mounting block 206 and the movable tube 202 to slide vertically upwards. The bottom of the movable tube 202 gradually separates from the inner wall of the conical bottom of tank 1 and continues to rise. During this process, the outer wall of the movable tube 202 moves relative to the deposited particulate solids layer. Once the bottom of the movable tube 202 is completely raised above the particulate solids layer... When its movement stops, the cylindrical annular cavity formed between the movable tube 202 and the suction tube 201 is completely exposed inside the tank 1. This can be understood as the bottom opening of the annular cavity opening as the movable tube 202 moves upward. Since the bottom of the annular cavity is located inside the sediment, the clarified liquid in the tank 1 flows into the bottom of the annular cavity and then into the discharge pipe 104. Because the valve in the discharge pipe 104 is closed, interstitial water accumulates in the discharge pipe 104 and is not discharged. Since the upper end of the extraction pipe 201 is connected to an external pump, the clarified liquid is drawn out from the extraction pipe 201 under the action of the pump and transported to an external collection device. In the final discharge stage of the clarified liquid, that is, the interstitial water in the sediment also enters the annular chamber and is discharged from the extraction pipe 201. In this embodiment, the lifting movement of the movable pipe 202 not only realizes the efficient recovery of the clear liquid in the tank 1, but also provides a path for the interstitial water retained in the pores inside the particulate solid layer to seep out and be discharged.

[0032] In the above embodiments, as shown in Figures 8 and 9, when the movable pipe 202 is raised, the annular cavity formed between the movable pipe 202 and the liquid extraction pipe 201 serves as the flow channel for liquid to drain to the discharge pipe 104. However, if the deposited particulate material layer collapses or slips during the raising process, the particles may directly rush in and block the cavity, causing the preset liquid flow path to be disrupted. The upper clear liquid cannot flow smoothly into the discharge pipe 104 through this channel, thus causing the liquid extraction operation to be interrupted or fail. Therefore, in this embodiment, a lifting and rotating assembly 3 is provided inside the tank 1. The lifting and rotating assembly 3 is located directly below the liquid extraction pipe 201. The lifting and rotating assembly 3 includes a filter screen 301 and a... The mesh frame 302 is located at the bottom of the tank 1 and is attached to the bottom surface of the tank 1. The filter screen 301 is installed inside the mesh frame 302. The mesh frame 302 is connected to the bottom of the movable tube 202. The tank 1 also includes a mounting plate 303, a toothed plate 304, a second motor 305, and a stirring rod 306. The top of the tank 1 has a through hole. The mounting plate 303 is rotatably connected to the inside of the through hole. The peripheral side of the mounting plate 303 meshes with the toothed plate 304. The bottom of the toothed plate 304 is rotatably connected to the top of the tank 1. The top of the toothed plate 304 is fixedly connected to the output end of the second motor 305. The second motor 305 is fixedly connected to the inner wall of the top cover 103. The stirring rod 306 is fixedly connected to the outer wall of the movable tube 202.

[0033] It should be further explained that the center or appropriate position of the mesh frame 302 is fixedly connected to the bottom of the movable tube 202, so that the mesh frame 302 and the filter screen 301 can be raised and lowered together with the movable tube 202. The mounting plate 303 is installed through the through hole opened at the top of the tank body 1 and can rotate in the through hole. Several stirring rods 306 are fixedly connected to the outer wall of the movable tube 202 in a radial or specific angle, located above the filter screen 301. The upper end of the liquid extraction tube 201 passes through the mounting plate 303 and is rotatably connected to the mounting plate 303.

[0034] The top end of the lead screw 205 passes through the mounting plate 303, and the top end of the lead screw 205 is fixedly connected to the output end of the first motor 204. The first motor 204 is fixedly connected to the mounting plate 303, and the bottom of the mounting plate 303 is fixedly connected to the top of the fixing tube 203.

[0035] In this embodiment, when the upper clear liquid needs to be discharged, the first motor 204 starts, driving the lead screw 205 to rotate, causing the movable tube 202, along with the mesh frame 302 and filter screen 301 at its bottom, to slowly rise upwards. The mesh frame 302 and filter screen 301 lift the bottom deposited particulate solid layer as a whole and move it upwards synchronously, ensuring that the gap formed between the particulate solid layer and the bottom wall of the tank 1 is maintained. Because the sediment rises synchronously with the movable tube 202, there will be no problem of sediment collapse or slippage due to the rise of the movable tube 202, which would cause particles to rush in and block the flow channel. Furthermore, during the lifting process, the second motor 305 can be started, driving the mounting plate 3 through the toothed disc 304. 03 Rotation: Since the mounting plate 303 is fixed to the fixed tube 203, and the movable tube 202 is connected to the lead screw 205 through the bearing, the movable tube 202 can rotate around the central axis of the liquid extraction tube 201 under the restriction of the lead screw 205. The rotation of the movable tube 202 drives the filter screen 301 at the bottom to rotate synchronously. During the rotation of the filter screen 301, it rubs against or moves relative to the particulate sediment, thereby causing the gap between the particulate sediment on the filter screen 301 to change continuously. This prevents fine particles from forming a dense filter cake on the surface of the filter screen 301, keeps the flow channel unobstructed, and ensures that the liquid in the gap between the particles in the particulate sediment can flow smoothly from the filter screen 301 to the inside of the discharge tube 104.

[0036] As shown in Figures 8 and 9, during the drainage process in the above embodiment, since the mesh frame 302 is connected to the bottom of the movable tube 202 through the limiting component 4, after the upper clear liquid is discharged, the solid particles precipitated on the filter screen 301 will remain on the mesh frame 302 and cannot be discharged from the tank 1 through the conventional drainage path. Therefore, in another embodiment of the present invention, a limiting component 4 is further provided at the center of the mesh frame 302. The limiting component 4 includes an electromagnetic pin 402, a top plate 403, and a bottom plate 406. The top plate 403 is connected to the mesh frame 302, and the bottom plate 406 is fixedly connected to the bottom of the top plate 403. The side wall of the bottom plate 406 is provided with a pin. The output end of the electromagnetic pin 402 is movably inserted into the slot. A connecting block 401 is installed on the outside of the electromagnetic pin 402. One end of the connecting block 401 is connected to the inner wall of the movable tube 202. A discharge assembly 5 is installed on the bottom side of the outer wall of the movable tube 202. The discharge assembly 5 includes a connecting rod 503. The bottom end of the connecting rod 503 is fixedly connected to the top of the top plate 403. The connecting rod 503 is arranged vertically. A sliding groove 502 is opened on the outer side of the movable tube 202. The connecting rod 503 is located in the sliding groove 502 and forms a sliding guide cooperation with the sliding groove 502. A stop block 501 is fixedly installed at the bottom of the sliding groove 502. The top of the connecting rod 503 is adapted to the stop block 501.

[0037] It should be noted that the connecting rod 503 has a T-shaped structure, and the electromagnetic pin 402 is existing technology and will not be described in detail. The electromagnetic pin 402 is fixed to the inner wall of the movable tube 202 by its external connecting block 401. When the electromagnetic pin 402 is energized, its output end extends and inserts into the slot, achieving a locking connection between the base plate 406 and the movable tube 202. When de-energized, the output end retracts, releasing the connection. The electromagnetic pin 402 will only be de-energized when the liquid inside the tank 1 is drained or when there is no liquid inside the tank 1, exposing the output end of the electromagnetic pin 402 inside the tank 1 to prevent liquid from corroding the output end of the electromagnetic pin 402. The outer shell of the magnetic pin 402 is protected and sealed by the connecting block 401 to prevent contact with liquid; the connecting rod 503 is arranged vertically, and its bottom end is fixedly connected to the top of the top plate 403 of the limiting component 4. Therefore, the connecting rod 503, the grid frame 302 and the top plate 403 form a fixed whole in relative position. The sliding groove 502 is vertically opened on the outer side of the movable tube 202. The top of the connecting rod 503 extends upward and is embedded in the sliding groove 502 of the movable tube 202, and can slide up and down in the groove. The size of the stop block 501 is adapted to the top of the connecting rod 503, so that when the connecting rod 503 slides to the bottom, its top can contact or limit the stop block 501.

[0038] In this embodiment, after the liquid is drained, the power supply to the electromagnetic plug 402 can be disconnected, causing its output end to disengage from the slot in the base plate 406. At this time, the locking connection between the movable tube 202 and the base plate 406 is released. Under the gravity of the particulate sediment carried on the filter screen 301, the top plate 403 is pressed downward, causing it to disengage from the movable tube 202 and instead form an indirect connection with the movable tube 202 through the connecting rod 503. As the connecting rod 503 and the movable tube 202 separate relative to each other, the annular chamber is opened, and the particulate sediment can fall through the annular chamber and enter the discharge pipe 104. Subsequently, the valve in the discharge pipe 104 is opened to discharge the particulate sediment out of the tank.

[0039] In the above embodiments, as shown in Figures 5, 6, 8, 9, and 10, after the solid-liquid mixture is added to tank 1, a flocculant needs to be added to accelerate the separation of the solid-liquid mixture. This can be achieved by stirring the material with the stirring rod 306, allowing the flocculant to fully react and mix with the solid-liquid mixture. Initially, the mesh frame 302 and filter screen 301 are located at the bottom of the inner wall of tank 1 and are in contact with the inner wall of tank 1. If the mesh frame 302 is driven to rotate during stirring, its bottom will continuously rub against the inner wall of tank 1. Since some materials are corrosive, the tank 1... The inner wall is usually coated with an anti-corrosion coating. Long-term or severe friction may cause the anti-corrosion coating to wear off, which in turn causes corrosion of the inner wall of the tank 1, ultimately affecting the service life and structural integrity of the tank 1. Therefore, in another embodiment of the present invention, a sliding groove 404 is further provided at the bottom of the top plate 403. The sliding groove 404 is arranged in a ring. A limiting groove 405 is provided inside the sliding groove 404. A limiting block 407 is fixedly connected to the top of the bottom plate 406. The limiting block 407 is rotatably connected inside the sliding groove 404, and the limiting block 407 abuts against the limiting groove 405.

[0040] It should be further explained that the periphery of the top plate 403 is fixedly connected to the grid frame 302, and its bottom is supported on the inner wall of the tank 1. An annular groove 404 is provided circumferentially at the bottom of the top plate 403. At least one limiting groove 405 is provided on the inner side of the groove 404. The bottom plate 406 is located below the top plate 403. The limiting block 407 is fixedly connected to the top of the bottom plate 406 and embedded in the groove 404, so that the bottom plate 406 can rotate relative to the top plate 403 along the groove 404. When the limiting block 407 rotates to be aligned with the limiting groove 405 and is pressed down or lifted by an external force, it can engage or disengage with it. The cross-section of the groove 404 is "T" shaped, which is adapted to the cross-section of the limiting block 407. Therefore, through the connection between the limiting block 407 and the groove 404, the bottom plate 406 at the bottom of the limiting block 407 is hung on the bottom of the top plate 403 without being affected by other forces.

[0041] In this embodiment, when it is necessary to stir the solid-liquid mixture in the tank 1 using the stirring rod 306, the bottom end of the movable tube 202 remains fixedly connected to the top of the top plate 403. At this time, the electromagnetic pin 402 is energized, causing its output end to extend into the slot on the side wall of the bottom plate 406, thereby locking the movable tube 202 to the bottom plate 406. Subsequently, the second motor 305 is started, driving the movable tube 202 to rotate, which in turn drives the stirring rod 306 fixed to the outer wall of the movable tube 202 to stir the material. During this process, since the electromagnetic pin 402 is locked... The rotation of the base plate 406 and the movable tube 202 will drive the base plate 406 to rotate synchronously. Since the base plate 406 is hung at the bottom of the top plate 403 by gravity, the limiting block 407 only contacts the inner wall of the slide groove 404 at its bottom end. The friction generated by the rotation of the limiting block 407 inside the slide groove 404 is limited. The limiting block 407 at the top of the base plate 406 rotates freely in the slide groove 404 at the bottom of the top plate 403 and does not transmit torque to the top plate 403. Therefore, the mesh frame 302, which is fixedly connected to the top plate 403, remains stationary and does not rotate with the stirring action; when needed When lifting the mesh frame 302, the electromagnetic pin 402 must be kept energized so that its output end is inserted into the slot of the base plate 406, locking the base plate 406 and the movable tube 202 together. Then, the first motor 204 is started to drive the movable tube 202 upward, thereby causing the base plate 406 to move upward synchronously. During the upward movement, the base plate 406 pushes the top plate 403 upward, thereby lifting the mesh frame 302, which is fixedly connected to the top plate 403, and detaching it from the conical inner wall at the bottom of the tank 1. After the lifting is completed, the second motor 305 is started to drive the movable tube 202. The rotation drives the base plate 406 to rotate as well. The limiting block 407 at the top of the base plate 406 rotates within the sliding groove 404 at the bottom of the top plate 403. Under the gravity of the mesh frame 302 and the particulate sediment it carries, the limiting block 407 gradually rotates to the limiting groove 405 at the top of the sliding groove 404 and engages with it, thereby achieving circumferential locking between the base plate 406 and the top plate 403. At this time, the rotation of the base plate 406 will drive the top plate 403 to rotate synchronously, thereby driving the mesh frame 302, which is fixedly connected to the top plate 403, to rotate as well.

[0042] The embodiments of this example have been described above. However, this example is not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this example, and all of them are within the protection scope of this example.

Claims

1. A reaction sedimentation tank with an integrated solid-liquid separation mechanism, comprising a tank body (1), wherein a mounting hole is provided at the bottom of the tank body (1), a discharge pipe (104) is fixedly installed at the mounting hole, a valve is installed inside the discharge pipe (104), and a liquid pumping assembly (2) is provided inside the tank body (1); characterized in that, The liquid extraction assembly (2) includes a liquid extraction pipe (201), a movable pipe (202), and a fixed pipe (203). The liquid extraction pipe (201) is vertically arranged inside the tank body (1), and the bottom end of the liquid extraction pipe (201) extends into the discharge pipe (104). The fixed pipe (203) is coaxially sleeved outside the liquid extraction pipe (201). The upper end of the fixed pipe (203) is fixedly connected to the inner wall of the tank body (1). The movable pipe (202) is sleeved on the outer wall of the fixed pipe (203). The movable pipe (202), the fixed pipe (203), and the liquid extraction pipe (201) form an annular chamber.

2. The reaction sedimentation tank with an integrated solid-liquid separation mechanism according to claim 1, characterized in that, The tank (1) also includes a support frame (101), a liquid outlet pipe (102) and a top cover (103). The support frame (101) is fixedly connected to the bottom of the tank (1), the top of the tank (1) is fixedly connected to the top cover (103), and a conical mounting cavity is formed between the tank (1) and the top cover (103). The liquid outlet pipe (102) is fixedly connected to the top of the top cover (103).

3. The reaction sedimentation tank with an integrated solid-liquid separation mechanism according to claim 2, characterized in that, The bottom of the tank (1) is a conical structure.

4. The reaction sedimentation tank with an integrated solid-liquid separation mechanism according to claim 3, characterized in that, The liquid extraction assembly (2) also includes a lead screw (205) and a mounting block (206). The mounting block (206) is fixedly connected to the top of the movable tube (202). The mounting block (206) has a threaded hole inside. The lower end of the lead screw (205) passes through the threaded hole and forms a threaded engagement with the mounting block (206) through the threaded hole. A first motor (204) is fixedly installed inside the top cover (103). The output end of the first motor (204) is connected to the upper end of the lead screw (205).

5. The reaction sedimentation tank with an integrated solid-liquid separation mechanism according to claim 4, characterized in that, The tank (1) is equipped with a lifting and rotating assembly (3), which is located directly below the liquid extraction pipe (201). The lifting and rotating assembly (3) includes a filter screen (301) and a mesh frame (302). The mesh frame (302) is located at the bottom of the tank (1) and is in contact with the bottom surface of the tank (1). The filter screen (301) is installed inside the mesh frame (302), and the mesh frame (302) is connected to the bottom of the movable pipe (202).

6. The reaction sedimentation tank with an integrated solid-liquid separation mechanism according to claim 5, characterized in that, The lifting and rotating assembly (3) also includes a mounting plate (303), a gear plate (304), a second motor (305), and a stirring rod (306). The top of the tank (1) has a through hole. The mounting plate (303) is rotatably connected to the inside of the through hole. The peripheral side of the mounting plate (303) meshes with the gear plate (304). The bottom of the gear plate (304) is rotatably connected to the top of the tank (1). The top of the gear plate (304) is fixedly connected to the output end of the second motor (305). The second motor (305) is fixedly connected to the inner wall of the top cover (103). The stirring rod (306) is fixedly connected to the outer wall of the movable tube (202).

7. A reaction sedimentation tank with an integrated solid-liquid separation mechanism according to claim 6, characterized in that, The liquid extraction assembly (2) also includes a first motor (204), the top end of the lead screw (205) passes through the mounting plate (303), and the top end of the lead screw (205) is fixedly connected to the output end of the first motor (204). The first motor (204) is fixedly connected to the mounting plate (303), and the bottom of the mounting plate (303) is fixedly connected to the top of the fixing tube (203).

8. The reaction sedimentation tank with an integrated solid-liquid separation mechanism according to claim 7, characterized in that, A limiting component (4) is provided at the center of the space frame (302). The limiting component (4) includes a top plate (403) and a bottom plate (406). The top plate (403) is fixedly connected to the space frame (302). A sliding groove (404) is provided at the bottom of the top plate (403). The sliding groove (404) is arranged in a ring. A limiting groove (405) is provided inside the sliding groove (404). A limiting block (407) is fixedly connected to the top of the bottom plate (406). The limiting block (407) is rotatably connected inside the sliding groove (404), and the limiting block (407) abuts against the limiting groove (405).

9. A reaction sedimentation tank with an integrated solid-liquid separation mechanism according to claim 8, characterized in that, The limiting component (4) also includes an electromagnetic pin (402). The side wall of the base plate (406) is provided with a slot. The output end of the electromagnetic pin (402) is movably inserted into the slot. A connecting block (401) is installed on the outside of the electromagnetic pin (402). One end of the connecting block (401) is connected to the inner wall of the movable tube (202).

10. A reaction sedimentation tank with an integrated solid-liquid separation mechanism according to claim 9, characterized in that, A discharge assembly (5) is installed on the bottom side of the outer wall of the movable tube (202). The discharge assembly (5) includes a connecting rod (503). The bottom end of the connecting rod (503) is fixedly connected to the top of the top plate (403). The connecting rod (503) is arranged vertically. A sliding groove (502) is opened on the outer side of the movable tube (202). A stop block (501) is fixedly installed at the bottom of the sliding groove (502). The connecting rod (503) is located in the sliding groove (502) and forms a sliding guide cooperation with the sliding groove (502). The top of the connecting rod (503) is adapted to the stop block (501).

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