Slurry circulation method

Abstract

The invention provides a slurry circulation method, a slurry box is arranged in a circulation loop for filtering, the slurry box comprises a slurry box body, and an anti-blocking feeding mechanism is arranged at one end of the top of the slurry box body; the anti-blocking feeding mechanism is composed of a rectangular material collecting frame, a discharging opening, two supports, two electric telescopic rods, two brackets, an annular fence and a filtering type feeding sleeve. The filtering type feeding sleeve is composed of a conical funnel, a rubber buffering ring, an annular net plate, a conical net cover and two vibration motors. The invention aims to provide a slurry circulation method which does not need to shut down when the blocked particulate matters are removed, and the problem that slurry circulation cannot be continuously carried out in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, and more particularly to a mud circulation method. Background Technology

[0002] To reduce the number of mud pits excavated during drilling operations, minimize environmental pollution caused by mud spills, and improve work efficiency and construction safety, large particles such as sand and gravel can damage the circulation pump and interfere with drilling operations. The existing mud circulation process involves setting up a filter screen in the circulation loop to isolate larger particles such as sand and gravel. However, conventional filter screens are prone to clogging during filtration. When the clogging affects the smoothness of feed, circulation needs to be stopped to clean the particles clogging the filter screen, which means that circulation cannot be carried out continuously. Summary of the Invention

[0003] The present invention aims to provide a mud circulation method that does not require machine shutdown when clearing clogging particles, thus solving the problem that mud circulation in the prior art cannot be carried out continuously.

[0004] To achieve the above objectives, the present invention employs the following technology: a mud circulation method, characterized in that a mud tank is set in the circulation loop for filtration. The mud tank includes a mud tank body, and a filter-type feeding mechanism is provided at one end of the top of the mud tank body. The filter-type feeding mechanism consists of a rectangular collection frame, a discharge port, two supports, two electric lifting rods, two brackets, an annular enclosure, and a filter-type feeding sleeve. The rectangular collection frame and supports are welded to the top of the mud tank body, the discharge port is welded to the bottom of one end of the rectangular collection frame, the electric lifting rods are fixedly connected to the top of the supports, the brackets are fixedly connected to the top of the electric lifting rods, and the annular enclosure... The baffle is welded between two brackets. The filter feed sleeve is located inside the rectangular collection frame and connected to the top of the mud tank body. A controller is fixedly installed in the middle of one side of the mud tank body. The filter feed sleeve consists of a conical funnel, a rubber buffer ring, an annular mesh plate, a conical mesh cover, and two vibration motors. The rubber buffer ring is fixedly connected to one end of the top of the mud tank body. The conical funnel is fixedly connected to the top of the rubber buffer ring. The annular mesh plate is fixedly connected to the top of the conical funnel. The conical mesh cover is fixedly connected to the middle of the top of the annular mesh plate. The two vibration motors are symmetrically installed on both sides of the conical funnel. The vibration motors are connected to the controller through a wiring harness.

[0005] Preferably, the wiring harness is fitted with a flexible metal sleeve, and a rain shield located on the top of the controller is fixedly installed on one side of the mud tank body.

[0006] Preferably, the mud tank body is composed of a steel tank body and a steel reinforcing mesh frame, with the steel reinforcing mesh frame welded to the outer surface of the steel tank body.

[0007] Preferably, a discharge port is welded to the bottom of one end of the steel box, and a sealing plate is provided at one end of the discharge port. The sealing plate is connected to the discharge port by several bolts.

[0008] Preferably, several ladders are welded to the side of the mud tank body near the controller.

[0009] Preferably, the annular enclosure comprises a funnel section, a cylindrical section, and a conical section connected sequentially from bottom to top. The funnel section, cylindrical section, conical section, and conical mesh are coaxial. During feeding, the slurry is poured onto the bottom wall of the funnel section. When the height of the particles accumulated on the annular mesh reaches a set maximum value, the vertical upward projection of the connection line between the upper surface of the particles and the conical mesh lies on the inner surface of the conical section. During feeding, the slurry is poured onto the bottom wall of the funnel. This prevents the impact force generated when the material enters during feeding from being transmitted to the conical mesh, thus avoiding particles forcibly entering the filter holes of the conical mesh and causing blockage.

[0010] Preferably, the filter holes on the conical mesh cover are inclined with the outer end lower than the inner end, and the filter holes on the annular mesh plate are also inclined. The inclined arrangement of the filter holes on the conical mesh cover (lower outer end than inner end) reduces the pressure of particulate matter, thus reducing the likelihood of clogging. The inclined arrangement of the filter holes on the annular mesh plate also reduces the likelihood of clogging.

[0011] Preferably, the system also includes an electric lifting pole upgrade control mechanism, which comprises an up switch, a down switch, and several trigger balls. The up switch is located above the down switch. The trigger balls are capable of floating within the particles and sinking within the mud. Each trigger ball is equipped with a permanent magnet. The up switch includes an up switch housing, which is annular and fixed to the conical mesh cover. The up switch housing contains a fixed conductive plate and a movable conductive plate suspended from the housing by several up switch tension springs. The movable conductive plate is ferromagnetic and located above the fixed conductive plate. The down switch includes a down switch housing, which is annular and fixed to the conical mesh cover. The down switch housing contains a fixed conductive plate. The ring-shaped barrier is supported by several tension springs on the housing of the lowering switch section. The moving conductive plate of the lowering switch section is a ferromagnetic structure and located below the fixed conductive plate of the lowering switch section. When the ring-shaped barrier rises to its highest position, its lower end face is below the lowering switch. During use, when particles accumulate to the point where the trigger ball contacts and pushes against the raising switch, the attraction between the moving conductive plate and the trigger ball drives the moving and fixed conductive plates of the raising switch section to close, thus establishing conductivity. The electric lifting rod extends, raising the ring-shaped barrier, and the particles are discharged from the gap between the ring-shaped barrier and the ring mesh plate. As the particles are discharged, the trigger ball descends. When the trigger ball rests on the lowering switch, the attraction between the moving conductive plate and the trigger ball drives the moving and fixed conductive plates of the lowering switch section to close, thus establishing conductivity. The electric lifting rod retracts, allowing the ring-shaped barrier to be supported back onto the ring mesh plate. The suction force generated when the mud passes through the conical mesh ensures that the trigger ball can move to the surface of the conical mesh, thereby ensuring that it can be used in conjunction with the raising and lowering switches for control operations.

[0012] Preferably, the diameter of the trigger ball is larger than the height of the gap between the lower end face of the annular barrier and the annular mesh plate when the annular barrier is raised to its highest position. This can prevent the trigger ball from being discharged due to control accidents or excessively fluid particles.

[0013] Preferably, the system also includes a rotating shaft located within the cylindrical section and blades mounted on the shaft. The upper end of the rotating shaft is movable up and down and is mounted on a fixed frame fixed to the annular mesh plate. The lower end is supported on the top of the conical mesh cover by a planar bearing. The rotating shaft is connected to the upper end of a connecting rod extending along the generatrix of the conical section. The connecting rod is equipped with several stirring rods for agitating the particles accumulated on the annular mesh plate. When the slurry passes through the cylindrical section, it drives the blades to drive the rotating shaft to rotate. As the stirring rods rotate with the shaft, they generate a force that drives the particles to float upwards. This agitates the accumulated particles, ensuring that the trigger ball floats to the surface of the particles.

[0014] Beneficial effects: (1) In the circulation process, the mud can be stored by setting up a circulation mud tank, which facilitates the recycling of mud and reduces the number of mud pits to be excavated. By setting up an anti-clogging feeding mechanism consisting of a rectangular collection frame, a discharge port, two supports, two electric lifting rods, two brackets, a ring-shaped enclosure and a filter-type feeding sleeve, the mud can be filtered during feeding to remove larger sand and gravel particles, making it easier to discharge larger particle impurities and reducing the possibility of blockage at the feed port. Moreover, the circulation does not need to be stopped when removing blockages, so that the circulation can be carried out continuously.

[0015] (2) By setting up a mud tank body composed of a steel box and a steel reinforced mesh frame, the overall strength can be improved. By setting up a discharge port and a sealing plate, the mud can be discharged. By setting up a ladder, it is convenient for workers to climb to the top of the mud tank. (3) The discharge of blockages can be automatically detected and carried out. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the mud tank in Example 1; Figure 2 This is a schematic diagram of a filter-type feeding mechanism; Figure 3 This is a schematic diagram of a filter-type feed jacket structure; Figure 4 This is a schematic diagram of the filter-type feeding mechanism in Example 2 when it is not discharging particulate matter; Figure 5 for Figure 4 A magnified view of a portion of point A; Figure 6 for Figure 4 A magnified view of a portion of point B; Figure 7 for Figure 4 A magnified view of a portion at point C; Figure 8 for Figure 7 A magnified view of a portion at point D; Figure 9 This is a schematic diagram of the filter-type feeding mechanism in Example 2 when it is discharging particulate matter.

[0017] In the diagram: 1. Mud tank body; 2. Anti-clogging feeding mechanism; 3. Rectangular collection frame; 4. Discharge port; 5. Support; 6. Electric lifting rod; 7. Bracket; 8. Circular enclosure; 9. Filter-type feeding sleeve; 10. Controller; 11. Conical funnel; 12. Rubber buffer ring; 13. Circular mesh plate; 14. Conical mesh cover; 15. Vibration motor; 16. Wiring harness; 17. Flexible metal sleeve; 18. Rain shield; 19. Steel box body; 20. Steel reinforced mesh frame; 21. Discharge port; 22. Sealing plate; 23. Ladder. 24. Funnel section; 25. Cylindrical section; 26. Conical section; 27. Bottom wall of funnel section; 28. Particles accumulated on the annular mesh plate; 29. ​​Filter holes on the conical mesh cover; 30. Filter holes on the annular mesh plate; 31. Upward switch; 32. Downward switch; 33. Trigger ball; 35. Housing of upward switch part; 36. Fixed conductive plate of upward switch part; 37. Tension spring of upward switch part; 38. Moving conductive plate of upward switch part; 39. Housing of downward switch part; 40. Fixed conductive plate of downward switch part; 41. Tension spring of downward switch part; 42. Moving conductive plate of downward switch part; 43. Gap between the lower end face of the annular enclosure and the annular mesh plate; 44. Rotating shaft; 45. Blade; 46. Fixing frame; 47. Planar bearing; 48. Connecting rod; 49. Stirring rod; 50. Mud. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1, see Figures 1 to 3A mud circulation method includes a mud tank for filtration within the circulation loop. The mud tank comprises a mud tank body 1, with an anti-clogging feeding mechanism 2 at one end of the top of the mud tank body 1. The anti-clogging feeding mechanism 2 consists of a rectangular collection frame 3, a discharge port 4, two supports 5, two electric lifting rods 6, two brackets 7, an annular enclosure 8, and a filter-type feeding sleeve 9. The rectangular collection frame 3 and supports 5 are welded to the top of the mud tank body 1. The discharge port 4 is welded to the bottom of one end of the rectangular collection frame 3. The electric lifting rods 6 are fixedly connected to the top of the supports 5, and the brackets 7 are fixedly connected to the top of the electric lifting rods 6. The annular enclosure 8 is welded between the two brackets 7. The filter-type feeding sleeve 9 is located inside the rectangular collection frame 3 and connected to the top of the mud tank body 1. A controller 1 is fixedly installed at the middle position on one side of the mud tank body 1. 0. The filter-type feed sleeve 9 consists of a conical funnel 11, a rubber buffer ring 12, an annular mesh plate 13, a conical mesh cover 14, and two vibration motors 15. The rubber buffer ring 12 is fixedly connected to one end of the top of the mud tank body 1. The conical funnel 11 is fixedly connected to the top of the rubber buffer ring 12. The annular mesh plate 13 is fixedly connected to the top of the conical funnel 11. The conical mesh cover 14 is fixedly connected to the middle position of the top of the annular mesh plate 13. The two vibration motors 15 are symmetrically installed on both sides of the conical funnel 11. The vibration motors 15 are connected to the controller 10 through a wiring harness 16. The wiring harness 16 is covered with a flexible metal sleeve 17, which can protect the wiring harness 16. A rain shield 18 is fixedly installed on one side of the mud tank body 1, located on the top of the controller 10, which can protect the controller 10 from sun and rain. When recycling and storing mud, the bottom of the annular enclosure 8 is placed against the top of the annular mesh plate 13. The mud is poured into the interior of the annular enclosure 8. At this time, the mud is filtered by the annular mesh plate 13 and the conical mesh cover 14. The mud passes through the annular mesh plate 13 and the conical mesh cover 14, and then enters the mud tank body 1 through the conical funnel 11. Larger sand and gravel particles are intercepted and then move down along the conical mesh cover 14 to avoid covering the conical mesh cover 14, thereby avoiding blockage of the conical mesh cover 14 and affecting the mud feeding. After the mud feeding is completed or when the top of the annular mesh plate 13 is filled with impurities... When there is a large amount of impurities, the electric lifting rod 6 drives the bracket 7 to move upward, and the bracket 7 drives the annular enclosure 8 to move upward. At this time, the top of the annular mesh plate 13 is in an open state, and the impurities enter the interior of the rectangular collection frame 3 and are then discharged through the discharge port 4. At this time, the staff can flush water into the interior of the rectangular collection frame 3 to facilitate the complete discharge of impurities and improve the cleanliness of the interior of the rectangular collection frame 3. During the impurity discharge process, the vibration motor 15 is started simultaneously to facilitate the discharge of impurities from the top of the annular mesh plate 13 and the conical mesh cover 14. The rubber buffer ring 12 can play a connecting and buffering role. The mud tank body 1 is composed of a steel box 19 and a steel reinforcing mesh frame 20. The steel reinforcing mesh frame 20 is welded to the outer surface of the steel box 19. A discharge port 21 is welded to the bottom of one end of the steel box 19. A sealing plate 22 is provided at one end of the discharge port 21. The sealing plate 22 is connected to the discharge port 21 by several bolts. Several ladders 23 are welded to the side of the mud tank body 1 near the controller 10. The combined structure of the steel box body 19 and the steel reinforced mesh frame 20 can improve the overall strength of the mud box body 1. When the mud is discharged, the sealing plate 22 can be removed. The ladder 23 can facilitate the workers to climb to the top of the mud box body 1.

[0020] In operation, a circulating mud tank allows for the storage of mud, facilitating its recycling and reducing the number of mud pits to be excavated. An anti-clogging feeding mechanism, consisting of a rectangular collection frame, discharge port, two supports, two electric lifting rods, two brackets, a ring-shaped enclosure, and a filter-type feed sleeve, filters the mud during feeding, removing larger sand and gravel particles and preventing blockages. This facilitates the discharge of larger impurities and reduces the possibility of clogging at the feed inlet. The mud tank body, constructed of a steel casing and reinforced steel mesh frame, enhances overall strength. The discharge port and sealing plate allow for mud discharge, and a ladder facilitates workers' access to the top of the mud tank. Cleaning the filter-type feed sleeve can be performed without stopping the feeding process, thus stopping the circulation.

[0021] Example 2 differs from Example 1 in that: See Figures 4 to 9 The annular enclosure comprises a funnel section 24, a cylindrical section 25, and a conical section 26 connected sequentially from bottom to top. The funnel section, rectangular section, conical section, and conical mesh cover are coaxial. During feeding, the slurry 50 is poured onto the bottom wall 27 of the funnel section. When the height of the particles 28 accumulated on the annular mesh plate reaches the set maximum value, the vertical upward projection of the connection line between the upper surface of the particles and the conical mesh cover is located on the inner surface of the conical section. The filter holes 29 on the conical mesh cover are inclined with the outer end lower than the inner end, and the filter holes 30 on the annular mesh plate are inclined.

[0022] It also includes an electric lifting pole upgrade control mechanism, which includes an up switch 31, a down switch 32 and several trigger balls 33. The up switch is located above the down switch. The trigger balls can float in the particles and sink in the mud 34. The trigger balls are equipped with permanent magnets. The up switch includes an up switch housing 35. The up switch housing is annular and fixed to the conical mesh cover. Inside the up switch housing is a fixed conductive plate 36 and a movable conductive plate 38 suspended from the up switch housing by several up switch tension springs 37. The movable conductive plate is ferromagnetic and located above the fixed conductive plate. Both the fixed conductive plate 36 and the movable conductive plate 38 are annular and extend along the extension direction of the up switch housing. The descent switch includes a descent switch housing 39, which is annular and fixed to the conical mesh cover. Inside the descent switch housing, there is a descent switch fixed conductive plate 40 and a descent switch movable conductive plate 42 supported by several descent switch tension springs 41. The descent switch movable conductive plate is a ferromagnetic structure and is located below the descent switch fixed conductive plate. Both the descent switch fixed conductive plate and the descent switch movable conductive plate are annular and extend along the extension direction of the descent switch housing. When the circular enclosure rises to its highest position, its lower end is below the lowering switch. During operation, as particles accumulate and contact the trigger ball, pushing against the raising switch, the attraction between the moving conductive plate of the raising switch and the trigger ball causes the moving and fixed conductive plates of the raising switch to close, thus connecting the circuit. The electric lifting rod extends, raising the circular enclosure, and the particles are discharged through the gap between the enclosure and the circular mesh plate. As the particles are discharged, the trigger ball descends. When the trigger ball rests on the lowering switch, the attraction between the moving conductive plate of the lowering switch and the trigger ball causes the moving and fixed conductive plates of the lowering switch to close, thus connecting the circuit. The electric lifting rod retracts, allowing the circular enclosure to be supported back onto the circular mesh plate. The suction force generated when the mud passes through the conical mesh ensures that the trigger ball can move to the surface of the conical mesh, thereby ensuring control operation in conjunction with the raising and lowering switches.

[0023] The diameter of the trigger ball is greater than the height of the gap 43 between the lower end of the annular enclosure and the annular mesh plate when the annular enclosure is raised to its highest position. It also includes a rotating shaft 44 located in the cylindrical section and blades 45 set on the rotating shaft. The upper end of the rotating shaft can move up and down and is mounted on a fixing frame 46 fixed together with the annular mesh plate. The lower end is supported on the top of the conical mesh cover by a plane bearing 47. The rotating shaft is connected to the upper end of several connecting rods 48 extending along the generatrix of the conical section. Several stirring rods 49 are provided on the connecting rods to stir the particles accumulated on the annular mesh plate. When the mud passes through the cylindrical section, it drives the blades to drive the rotating shaft to rotate. When the stirring rods rotate with the rotating shaft, they generate a force that drives the particles to float.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mud circulation method, characterized in that, A mud tank is installed in the circulation loop for filtration. The mud tank includes a main body, and a filter-type feeding mechanism is installed at one end of the top of the main body. The filter-type feeding mechanism consists of a rectangular collection frame, a discharge port, two supports, two electric lifting rods, two brackets, an annular enclosure, and a filter-type feeding sleeve. The rectangular collection frame and supports are welded to the top of the mud tank main body, the discharge port is welded to the bottom of one end of the rectangular collection frame, the electric lifting rods are fixedly connected to the top of the supports, the brackets are fixedly connected to the top of the electric lifting rods, the annular enclosure is welded between the two brackets, and the filter-type feeding sleeve... Located inside the rectangular aggregate frame and connected to the top of the mud tank body, a controller is fixedly installed in the middle of one side of the mud tank body; the filter feed sleeve consists of a conical funnel, a rubber buffer ring, an annular mesh plate, a conical mesh cover, and two vibrating motors. The rubber buffer ring is fixedly connected to one end of the top of the mud tank body, the conical funnel is fixedly connected to the top of the rubber buffer ring, the annular mesh plate is fixedly connected to the top of the conical funnel, the conical mesh cover is fixedly connected to the middle of the top of the annular mesh plate, and the two vibrating motors are symmetrically installed on both sides of the conical funnel. The vibrating motors are connected to the controller through a wiring harness.

2. The mud circulation method according to claim 1, characterized in that, The wiring harness is fitted with a flexible metal sleeve, and a rain shield is fixedly installed on one side of the mud tank body, located on the top of the controller.

3. The mud circulation method according to claim 1, characterized in that, The mud tank body is composed of a steel box and a steel reinforcing mesh frame, with the steel reinforcing mesh frame welded to the outer surface of the steel box.

4. The mud circulation method according to claim 3, characterized in that, A discharge port is welded to the bottom of one end of the steel box, and a sealing plate is provided at one end of the discharge port. The sealing plate is connected to the discharge port by several bolts.

5. The mud circulation method according to claim 1, characterized in that, Several ladders are welded to the side of the mud tank body near the controller.

6. The mud circulation method according to claim 1, characterized in that, The annular enclosure comprises a funnel section, a cylindrical section, and a conical section connected sequentially from bottom to top. The funnel section, the rectangular section, the conical section, and the conical mesh cover are coaxial. During feeding, the slurry is poured onto the bottom wall of the funnel section. When the height of the particles accumulated on the annular mesh plate reaches the set maximum value, the vertical upward projection of the connection line between the upper surface of the particles and the conical mesh cover is located on the inner surface of the conical section.

7. A mud circulation method according to claim 6, characterized in that, The filter holes on the conical mesh cover are tilted with the outer end lower than the inner end, and the filter holes on the annular mesh plate are also tilted. This tilting of the filter holes on the conical mesh cover, with the outer end lower than the inner end, reduces the risk of particulate matter pressure causing clogging of the filter holes.

8. A mud circulation method according to claim 6, characterized in that, It also includes an electric lifting pole upgrade control mechanism, which comprises an up switch, a down switch, and several trigger balls. The up switch is located above the down switch. The trigger balls are capable of floating within the particles and sinking within the mud. Each trigger ball is equipped with a permanent magnet. The up switch includes an up switch housing, which is annular and fixed to the conical mesh cover. Inside the up switch housing are a fixed conductive plate and a movable conductive plate suspended from the housing by several up switch tension springs. The movable conductive plate is ferromagnetic and located above the fixed conductive plate. The down switch includes a down switch housing, which is annular and fixed to the conical mesh cover. Inside the down switch housing are a fixed conductive plate. The device consists of a movable conductive plate of the lowering switch section, which is supported by several tension springs on the outer shell of the lowering switch section. The movable conductive plate of the lowering switch section is of ferromagnetic structure and is located below the fixed conductive plate of the lowering switch section. When the annular barrier rises to its highest position, the lower end face of the annular barrier is located below the lowering switch. During use, when particles accumulate to the point where the trigger ball contacts and pushes against the uppering switch, the attraction between the movable conductive plate of the uppering switch section and the trigger ball drives the movable conductive plate and the fixed conductive plate of the uppering switch section to close and conduct electricity. The electric lifting rod extends and lifts the annular barrier, and the particles are discharged from the gap between the annular barrier and the annular mesh plate. When the particles are discharged, the trigger ball descends together. When the trigger ball rests on the lowering switch, the attraction between the movable conductive plate of the lowering switch section and the trigger ball drives the movable conductive plate and the fixed conductive plate of the lowering switch section to close and conduct electricity. The electric lifting rod retracts, allowing the annular barrier to be supported back on the annular mesh plate.

9. A mud circulation method according to claim 8, characterized in that, The diameter of the trigger ball is greater than the height of the gap between the lower end face of the annular fence and the annular mesh plate when the annular fence rises to its highest position.

10. A mud circulation method according to claim 8, characterized in that, It also includes a rotating shaft located within the cylindrical section and blades mounted on the rotating shaft. The upper end of the rotating shaft is movable up and down and is mounted on a fixed frame that is fixed together with the annular mesh plate. The lower end is supported on the top of the conical mesh cover by a plane bearing. The rotating shaft is connected to the upper end of a connecting rod extending along the generatrix of the conical section. The connecting rod is equipped with several stirring rods for stirring the particles accumulated on the annular mesh plate. When the slurry passes through the cylindrical section, it drives the blades to drive the rotating shaft to rotate. When the stirring rods rotate with the rotating shaft, they generate a force that drives the particles to float upward.

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