Horizontal spiral sedimentation disc centrifugal machine

Abstract

The invention discloses a horizontal type spiral sedimentation disc centrifugal machine, and belongs to the technical field of centrifugal machines, a plurality of dispersing openings are formed in the outer wall of a spiral conveyor in the circumferential direction in an annular array mode, the dispersing openings are arranged into multiple sets in the axis direction of the spiral conveyor, and first sliding grooves are formed in the dispersing openings; a first sliding groove is formed in the middle of the disc, a first sliding block is arranged in the first sliding groove in a sliding mode, one end of the first sliding block is elastically connected with the inner end face of the first sliding groove through a first spring, and a torsion shaft is rotationally installed on the first sliding block. According to the centrifugal machine, the slag discharging speed can be increased through forward pushing, further dehydration can be achieved through backward extrusion, the stepped smashing effect of the discs and the fluid mechanics dispersing effect of the dispersing holes on the residues are combined, the residues can be effectively prevented from adhering and caking, the risk that the slag outlet is blocked is remarkably reduced, and continuous and stable operation of the centrifugal machine is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of centrifuge technology, and particularly relates to a horizontal spiral sedimentation disc centrifuge. Background Technology

[0002] As an automated centrifugal device with high-speed operation and continuous operation, the horizontal spiral sedimentation centrifuge works by using powerful centrifugal force to accurately separate the solid and liquid phases. This equipment is particularly suitable for solid-liquid separation of liquids containing suspended particles. With its efficient and stable separation performance, it is widely used in solid-liquid separation processes in many industries such as environmental protection, chemical industry, and pharmaceutical industry. In normal operation, after the separation operation is completed, the liquid phase of this type of horizontal spiral sedimentation centrifuge will flow out through the liquid outlet set at the end shaft, and then smoothly discharge to the outside of the equipment through the pre-set liquid outlet on the lower casing. The separated solid residue will be discharged out of the machine in an orderly manner through a specially set slag discharge pipe, thereby achieving complete separation and separate collection of the solid and liquid phases.

[0003] Existing technologies disclose several invention patents in the field of centrifuge technology. Among them, invention patent with publication number CN215655756U discloses a horizontal spiral sedimentation disc centrifuge, including a main body. A rotating bearing is arranged on the left side of the main body, and a first pulley is arranged on the left side of the rotating bearing. The first pulley and a second pulley are movably connected by a belt. A separation mechanism is arranged inside the main body. When material enters the main body through the feed pipe, the first motor on the left side starts and drives the second pulley. The second pulley drives the first pulley through the belt. The first pulley drives the rotating drum to rotate rapidly through the rotating bearing. The second motor on the right side drives the feed pipe to rotate, so that the material passes through the liquid outlet and the liquid is thrown onto the rotating drum through the filter screen, that is, the solid-liquid separation of the material is achieved. The device can be cleaned by opening the main body of the device. This device can effectively solve the problem of solid material blockage caused by the inability of the equipment to quickly separate solid and liquid materials. However, there are still some shortcomings in the application of this technical solution. During the operation of the horizontal spiral sedimentation disc centrifuge, the solid particles in the material are separated by the strong centrifugal force generated by high-speed rotation. However, the residue after sedimentation has a strong adsorption capacity and easily adheres to the inner wall of the drum. Over time, the residue adsorbed on the inner wall of the drum will continue to accumulate and form agglomerates. This agglomeration will significantly change the internal spatial structure of the drum, hinder the normal flow of subsequent materials, adversely affect the subsequent discharge operation of the centrifuge, reduce the discharge efficiency, and may even cause problems such as poor discharge and equipment blockage.

[0004] Based on this, the present invention designs a horizontal spiral sedimentation disc centrifuge to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the problem that during the operation of a horizontal spiral sedimentation disc centrifuge, solid particles in the material undergo sedimentation and separation using the powerful centrifugal force generated by high-speed rotation. However, the sedimented residue has strong adsorption properties and easily adheres to the inner wall of the drum. Over time, these residues adsorbed on the inner wall of the drum will continuously accumulate, forming agglomerates. This agglomeration significantly alters the internal spatial structure of the drum, hinders the normal flow of subsequent materials, adversely affects the later discharge operation of the centrifuge, reduces discharge efficiency, and may even cause problems such as poor discharge and equipment blockage. Therefore, a horizontal spiral sedimentation disc centrifuge is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A horizontal spiral sedimentation disc centrifuge includes a centrifuge body, a built-in spiral conveyor and a rotating drum. The outer wall of the spiral conveyor has multiple discrete ports arranged in a circumferential annular array, and the multiple discrete ports are arranged in multiple groups along the axial direction of the spiral conveyor. The discrete port is provided with a first groove, and a first slider is slidably disposed in the first groove. One end of the first slider is elastically connected to the inner end face of the first groove through a first spring. A torsion shaft is rotatably mounted on the first slider, and a disc is mounted on one end of the torsion shaft. Multiple discrete holes are formed on the end face of the disc. A pressure tank is provided on the inner side of the drum corresponding to the torsion shaft. A torsion groove is provided on the outer wall of the pressure tank corresponding to the torsion shaft. A toothed plate is fixed on the inner wall of the torsion groove. A gear is fixedly fitted at the other end of the torsion shaft, and the gear meshes with the gear plate. Multiple pressure tanks are connected in sequence via a linkage shaft. The outermost pressure tank is connected to a linkage frame at its end, and the other end of the linkage frame is connected to a hydraulic cylinder installed inside the drum.

[0007] As a further description of the above technical solution: The discs are disposed within the conical section of the drum and abut against the inner wall of the drum. Multiple sets of discs arranged along the axial direction of the drum are distributed in a stepped manner.

[0008] As a further description of the above technical solution: The inner wall of the torsion groove is provided with a second sliding groove, and a second slider is slidably connected in the second sliding groove. The torsion shaft is rotatably connected to the second slider.

[0009] As a further description of the above technical solution: A pressure-relieving shaft is sleeved inside the torsion shaft, and a mesh disc is snapped into the bottom port of the pressure-relieving shaft. A second spring is connected to the bottom of the mesh disc, and the mesh disc is elastically supported and connected to the inner bottom of the torsion shaft through the second spring.

[0010] As a further description of the above technical solution: The disc is configured as a hollow structure, and a discrete cylinder is rotatably connected inside the discrete hole. The inner wall of the discrete cylinder has multiple diversion holes arranged in a ring array.

[0011] As a further description of the above technical solution: The outer wall of the discrete cylinder is connected to multiple fins arranged in a ring array. The multiple fins and multiple flow dividers are staggered. An isolation ring is connected to the outer periphery of the corresponding fin inside the disc. An air intake pipe is connected to the outer wall of the isolation ring along the tangential direction of the multiple fins.

[0012] As a further description of the above technical solution: Both ends of the pressure tank are fitted with sealing sleeves, and a fixed shaft is slidably fitted inside multiple sealing sleeves. The end of the fixed shaft is connected to the inside of the drum through a bracket. A piston disc is fitted inside the pressure tank and is fixedly fitted onto the fixed shaft.

[0013] As a further description of the above technical solution: The outer wall of the pressure tank is connected to a first suction pipe and a first pressure relief pipe on one side corresponding to the piston disc. A first check valve and a third check valve are installed on the first suction pipe and the first pressure relief pipe, respectively. The outer wall of the pressure tank is connected to a second suction pipe and a second pressure relief pipe on the other side corresponding to the piston disc. A second check valve and a fourth check valve are installed on the second suction pipe and the second pressure relief pipe, respectively. The other end of the first pressure relief pipe is connected to a torsion shaft on one side, and the other end of the second pressure relief pipe is connected to a torsion shaft on the other side.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, the high-efficiency anti-clogging and residue handling capabilities are achieved by driving the discs to rotate in both directions via a hydraulic cylinder. This not only pushes the discs forward to accelerate the slag discharge speed but also squeezes them in the reverse direction to further dehydrate them. Combined with the stepped crushing effect of the discs and the hydrodynamic dispersion effect of the discrete holes on the residue, this effectively prevents residue adhesion and agglomeration, significantly reduces the risk of slag outlet blockage, and ensures the continuous and stable operation of the centrifuge.

[0015] 2. In this invention, the precise and interconnected multi-functional integrated control can simultaneously control multiple pressure tanks through the push-pull action of a single hydraulic cylinder, and sequentially link them to achieve three core functions: disc rotation (crushing / pushing / squeezing), axial movement of the torsion shaft (mode switching), and gas injection system (assisted fluidization). This system has a high degree of integration, simple and efficient control logic, and achieves a synergistic effect of multiple functions in one action.

[0016] 3. In this invention, there is a dual optimization mechanism for the fluidity of the residue. Mechanical optimization involves breaking down, dispersing, and dehydrating the residue through discs, thereby physically reducing the particle size, moisture content, and viscosity, thus improving fluidity. Pneumatic optimization involves the innovative introduction of a gas injection system. Gas is injected into the residue at varying angles through channels, isolation rings, and rotating discrete cylinders inside the discs. This not only directly fluidizes the residue, reduces internal pressure, and improves gas distribution, but also further reduces the conveying resistance of the screw conveyor, fundamentally improving the slag discharge conditions from a fluid dynamics perspective.

[0017] 4. In this invention, the operating mode can be intelligently switched, which is highly adaptable. The system can flexibly switch between the "same-direction pushing - rapid slag discharge" mode and the "reverse extrusion - deep dehydration" mode as needed by changing the action of the hydraulic cylinder. At the same time, the start-up and shutdown of the gas system and the switching of the gas path are also automatically completed in this process, so that the equipment can adapt to the needs of different material properties or process stages, and improve the overall processing efficiency and product quality.

[0018] 5. In this invention, the system stability and self-adjustment capability are enhanced. The pressure tank integrates a pneumatic system consisting of a first slider, a first slide groove, a second slider, a second slide groove, a first one-way valve, a second one-way valve, a third one-way valve, and a fourth one-way valve, so that mechanical action and pneumatic assistance are connected in an orderly manner and do not interfere with each other. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a horizontal spiral sedimentation disc centrifuge proposed in this invention; Figure 2 This is a cross-sectional structural schematic diagram of a horizontal spiral sedimentation disc centrifuge proposed in this invention; Figure 3 This invention proposes a horizontal spiral sedimentation disc centrifuge. Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the linkage rod in a horizontal spiral sedimentation disc centrifuge proposed in this invention; Figure 5 This is a schematic diagram of the structure of the disc in a horizontal spiral sedimentation disc centrifuge proposed in this invention; Figure 6This invention proposes a horizontal spiral sedimentation disc centrifuge. Figure 5 A structural diagram from another perspective; Figure 7 This invention proposes a horizontal spiral sedimentation disc centrifuge. Figure 5 A cross-sectional structural diagram; Figure 8 This is a schematic diagram of the discrete cylinder in a horizontal spiral sedimentation disc centrifuge proposed in this invention.

[0020] Legend: 1. Centrifuge body; 2. Screw conveyor; 3. Rotary drum; 4. Discrete inlet; 5. First chute; 6. First slider; 7. First spring; 8. Torsion shaft; 9. Disc; 10. Torsion groove; 11. Gear; 12. Gear plate; 13. Linkage rod; 14. Linkage frame; 15. Hydraulic cylinder; 16. Discrete hole; 17. Discrete cylinder; 18. Diverter hole; 19. Isolation ring; 20. Fin; 21. Inlet pipe; 22. First suction pipe; 23. First one-way valve; 24. Piston disc; 25. Sealing sleeve; 26. Second suction pipe; 27. Second one-way valve; 28. First pressure relief pipe; 29. ​​Third one-way valve; 30. Second pressure relief pipe; 31. Fourth one-way valve; 32. Second chute; 33. Second slider; 34. Pressure tank; 35. Fixed shaft; 36. Pressure relief shaft; 37. Second spring; 38. Mesh plate. Detailed Implementation

[0021] 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.

[0022] Please see the appendix Figure 1 -Appendix Figure 8 The present invention provides a technical solution: a horizontal spiral sedimentation disc centrifuge, including a centrifuge body 1, a built-in spiral conveyor 2 and a drum 3. The outer wall of the spiral conveyor 2 is provided with a plurality of discrete ports 4 arranged in a circumferential ring array, and the plurality of discrete ports 4 are arranged in multiple groups along the axial direction of the spiral conveyor 2. The discrete port 4 is provided with a first slide groove 5, and a first slider 6 is slidably arranged in the first slide groove 5. One end of the first slider 6 is elastically connected to the inner end face of the first slide groove 5 through a first spring 7. A torsion shaft 8 is rotatably mounted on the first slider 6. A disc 9 is mounted on one end of the torsion shaft 8. Multiple discrete holes 16 are opened on the end face of the disc 9. A pressure tank 34 is provided on the inner side of the drum 3, corresponding to the torsion shaft 8. A torsion groove 10 is provided on the outer wall of the pressure tank 34, corresponding to the torsion shaft 8. A toothed plate 12 is fixed on the inner wall of the torsion groove 10. A gear 11 is fixedly mounted on the other end of the torsion shaft 8, and the gear 11 meshes with the toothed plate 12. Multiple pressure tanks 34 are connected in sequence via a linkage shaft. The end of the outermost pressure tank 34 is connected to a linkage frame 14, and the other end of the linkage frame 14 is connected to a hydraulic cylinder 15 installed inside the drum 3.

[0023] The specific implementation method is as follows: During the operation control of the centrifuge, the operating status of the centrifuge body 1, the screw conveyor 2 and the drum 3 are precisely controlled. Among them, the control of the hydraulic cylinder 15 is the key link. When the hydraulic cylinder 15 performs the extension action, it will directly apply the thrust to the pressure tank 34 connected to it with the help of the linkage frame 14. Since the pressure tanks 34 are connected to each other through the linkage rod 13, the pulling or pushing operation of multiple pressure tanks 34 can be realized simultaneously during the operation of the hydraulic cylinder 15. During the process of the pressure tank 34 being pushed, it will drive the toothed plate 12 to move smoothly on the tooth surface of the gear 11. The interaction force generated by this movement will cause the torsion shaft 8 on the gear 11 to rotate in a specific direction. When the pressure tank 34 is pulled, through the close linkage between the toothed plate 12 and the gear 11, the torsion shaft 8 can be driven to rotate in the opposite direction. The rotation of the torsion shaft 8 further drives the discs 9 to move in both directions within the conveying trough of the screw conveyor 2. These discs 9 are arranged in an orderly stepped structure. In actual operation, they can effectively break up the residue that has undergone dehydration treatment in the conveying trough. This breaking up process can effectively prevent the residue from adhering to the inner wall of the drum 3, and at the same time prevent the residue from agglomerating under the combined action of conveying pressure and its own stickiness. In this way, the possibility of the residue clogging at the slag outlet can be greatly reduced, ensuring the stable and efficient operation of the centrifuge.

[0024] Specifically, the disc 9 is disposed within the conical section of the drum 3 and abuts against the inner wall of the drum 3. Multiple sets of discs 9 arranged along the axial direction of the drum 3 are distributed in a stepped manner. The inner wall of the torsion groove 10 is provided with a second sliding groove 32, and a second slider is slidably connected within the second sliding groove 32. The torsion shaft 8 is rotatably connected to the second slider. A pressure-relieving shaft 36 is sleeved inside the torsion shaft 8. A mesh disk 38 is snapped into the bottom port of the pressure-relieving shaft 36. A second spring 37 is connected to the bottom of the mesh disk 38. The mesh disk 38 is elastically supported and connected to the inner bottom of the torsion shaft 8 through the second spring 37. The disc 9 is designed as a hollow structure, and a discrete cylinder 17 is rotatably connected within the discrete hole 16. The inner wall of the dispersion cylinder 17 is provided with multiple diversion holes 18 arranged in a ring array. The outer wall of the dispersion cylinder 17 is connected with multiple fins 20 arranged in a ring array. The multiple fins 20 and the multiple diversion holes 18 are staggered. The inner wall of the disc 9 is connected to the outer periphery of the fins 20 with an isolation ring 19. The outer wall of the isolation ring 19 is connected to an air inlet pipe 21 along the tangent direction of the multiple fins 20. Both ends of the pressure tank 34 are clamped with sealing sleeves 25. The same fixed shaft 35 is slidably sleeved in the multiple sealing sleeves 25. The end of the fixed shaft 35 is connected to the inside of the drum 3 through a bracket. A piston disc 24 is sleeved in the pressure tank 34. The piston disc 24 is fixedly sleeved on the fixed shaft 35.

[0025] The specific implementation method is as follows: the second slide groove 32 in the pressure tank 34 slides along the surface of the second slider. When the second slider slides to the end of the second slide groove 32, it will transmit a force to the torsion shaft 8 through the second slider. This force is either a pushing force or a pulling force. Under the action of the pushing force or the pulling force, the torsion shaft 8 moves in the discrete port 4. This movement further drives the first slider 6 to slide in the first slide groove 5. Since there is no relative movement between the gear 11 and the toothed plate 12 during this process, the disc 9 will not rotate and will remain stationary. When the hydraulic cylinder 15 applies a pushing force to the pressure tank 34, the rotation direction of the multiple discs 9 is consistent with the conveying direction of the screw conveyor 2. This same-direction rotation enables the discs 9 to perform segmented pushing operations on the residue in the conveying trough. Specifically, the discs 9 are like pushers arranged at intervals, conveying the residue forward in certain segments. This pushing method helps to speed up the discharge speed of the residue and improve the processing efficiency of the entire system. When the hydraulic cylinder 15 applies a pulling force to the pressure tank 34, the rotation direction of the multiple discs 9 is opposite to the conveying direction of the screw conveyor 2, forming a reciprocal motion. At this time, the discs 9 will generate reverse pressure on the residue being conveyed. This reverse pressure can further squeeze the residue, thereby removing the residual moisture in the residue. As the moisture in the residue decreases, its internal viscosity will also decrease accordingly. After the viscosity of the residue decreases, the fluidity in the discharge stage will be significantly improved, and it can be discharged more smoothly from the slag outlet, reducing the occurrence of blockage and other problems.

[0026] Specifically, on one side of the outer wall of the pressure tank 34 corresponding to the piston disc 24, a first suction pipe 22 and a first pressure relief pipe 28 are respectively connected. A first one-way valve 23 and a third one-way valve 29 are respectively installed on the first suction pipe 22 and the first pressure relief pipe 28. On the other side of the outer wall of the pressure tank 34 corresponding to the piston disc 24, a second suction pipe 26 and a second pressure relief pipe 30 are respectively connected. A second one-way valve 27 and a fourth one-way valve 31 are respectively installed on the second suction pipe 26 and the second pressure relief pipe 30. The other end of the first pressure relief pipe 28 is connected to a torsion shaft 8 on one side, and the other end of the second pressure relief pipe 30 is connected to a torsion shaft 8 on the other side.

[0027] The specific implementation method is as follows: When the pressure tank 34 is subjected to a pulling force, it slides on the surface of the piston disc 24. During this process, the third one-way valve 29 is closed and the first one-way valve 23 is opened. External gas is drawn into the pressure tank 34 and accumulates on one side of the piston disc 24. At the same time, the pressure on the other side of the piston disc 24 increases accordingly. When the pressure reaches the opening threshold of the fourth one-way valve 31, the second one-way valve 27 is closed and the fourth one-way valve 31 is opened. The gas on this side flows into the torsion shaft 8 connected to it through the second pressure relief pipe 30. When the pressure tank 34 is pushed, the fourth one-way valve 31 closes and the second one-way valve 27 opens. Gas enters the pressure tank 34 along the second suction pipe 26. At the same time, the first one-way valve 23 closes and the third one-way valve 29 opens. Gas on one side of the piston disc 24 flows into the torsion shaft 8 connected to the other side through the first pressure relief pipe 28. Gas entering the torsion shaft 8 will enter the disc 9 through the pressure relief shaft 36. Gas in the disc 9 flows into multiple isolation rings 19 through multiple air inlet pipes 21. Gas entering the isolation rings 19 directly acts on multiple fins 20, thereby driving the discrete cylinder 17 to rotate in the discrete hole 16. The gas inside the isolation ring 19 is also ejected through multiple diversion holes 18 and acts directly on the inside of the residue. The rotation of the discrete cylinder 17 will continuously change the injection angle of the gas through the diversion holes 18. This method of blowing gas into the inside of the residue can effectively improve the gas distribution inside the residue, further enhance the fluidity of the residue in the discharge stage, and thus effectively prevent the residue from being blocked at the slag outlet. In addition, reducing the internal pressure of the residue can also reduce the resistance encountered by the screw conveyor 2 when conveying the residue, and improve the working efficiency and stability of the entire system.

[0028] Working principle and usage: In the operation control of centrifuge, it is crucial to accurately adjust the operating status of centrifuge body 1, screw conveyor 2 and drum 3. Among them, the control of hydraulic cylinder 15 is particularly important. When hydraulic cylinder 15 extends, it directly pushes the connected pressure tank 34 through linkage frame 14. Since each pressure tank 34 is connected to each other through linkage rod 13, the hydraulic cylinder 15 can simultaneously push and pull multiple pressure tanks 34 when it is working. When the pressure tank 34 is pushed, it causes the toothed plate 12 to move smoothly along the tooth surface of the gear 11. The interaction force between the toothed plate 12 and the gear 11 drives the torsion shaft 8 on the gear 11 to rotate in a specific direction. When the pressure tank 34 is pulled, the torsion shaft 8 is driven to rotate in the opposite direction through the same linkage. The rotation of the torsion shaft 8 further drives the stepped discs 9 to rotate in both directions in the conveying trough of the screw conveyor 2. These discs 9 can efficiently break up the residue after dehydration, prevent the residue from sticking to the inner wall of the drum 3 or agglomerating, thereby significantly reducing the risk of clogging at the slag outlet and ensuring the stable and efficient operation of the centrifuge. The surface of the disc 9 is provided with multiple discrete holes 16. From the perspective of fluid dynamics, the discrete holes 16 change the local pressure and velocity distribution in the residue flow area. When the residue flows through the disc 9, some of it passes through the holes and some of it detours. The difference in the flow path further disperses the clump-like residue into smaller particles, improving the degree of dispersion. The gaps between the residue particles increase and the interaction force weakens, enhancing the internal fluidity. Ultimately, this makes the discharge process smoother, reduces blockage, and ensures stable system operation. The pressure tank 34 slides along the second slider in the second slide groove 32. When it reaches the end of the slide groove, it transmits a thrust or pull force to the torsion shaft 8 through the second slider, causing the torsion shaft 8 to move in the discrete port 4, thereby driving the first slider 6 to slide in the first slide groove 5. During this process, the gear 11 and the toothed plate 12 have no relative movement, and the disc 9 remains stationary. When the hydraulic cylinder 15 pushes the pressure tank 34, the rotation direction of the multiple discs 9 is the same as that of the screw conveyor, which can push the residue in the conveying trough in segments, just like the spaced propellers conveying the residue segment by segment, which helps to speed up the discharge speed and improve the processing efficiency. When the hydraulic cylinder 15 pulls the pressure tank 34, the disc 9 rotates in the opposite direction to the conveying direction, forming a reciprocal motion. The disc 9 applies reverse pressure to the residue to achieve further squeezing and remove residual moisture. After the moisture content of the residue decreases, its viscosity decreases, and its fluidity improves during the discharge stage, allowing it to be discharged more smoothly from the slag outlet and reducing blockage. When the pressure tank 34 is subjected to tension, it slides on the surface of the piston disc 24. The first one-way valve 23 opens, and external gas is drawn into the pressure tank 34 and accumulates on one side of the piston disc 24. The pressure on the other side increases. When the pressure reaches the opening threshold of the fourth one-way valve 31, the valve opens, and the gas flows into the connected torsion shaft 8 through the second pressure relief pipe 30. When the pressure tank 34 is subjected to thrust, the fourth one-way valve 31 closes and the second one-way valve 27 opens. Gas enters the pressure tank 34 along the second suction pipe 26. At the same time, the first one-way valve 23 closes and the third one-way valve 29 opens. Gas on one side of the piston disc 24 flows into other connected torsion shafts 8 through the first pressure relief pipe 28. The gas then enters the interior of the disc 9 along the pressure relief shaft 36, and then enters each isolation ring 19 through multiple air inlet pipes 21, directly acting on the fins 20 and driving the discrete cylinder 17 to rotate in the discrete hole 16. The gas inside the isolation ring 19 is also injected into the interior of the residue through multiple diversion holes 18. The rotation of the discrete cylinder 17 continuously changes the gas injection angle. Blowing gas into the interior of the residue can improve the gas distribution inside, further enhance the fluidity of the discharge stage, and effectively prevent the slag outlet from being blocked. At the same time, reducing the internal pressure of the residue also helps to reduce the conveying resistance of the screw conveyor 2, and improve the system's working efficiency and operational stability.

[0029] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A horizontal screw-decanting disc centrifuge comprising a centrifuge body (1), an internal screw conveyor (2) and a bowl (3), characterized in that, A plurality of discrete openings (4) are arranged in a circumferential annular array on the outer wall of the screw conveyor (2), and are arranged in groups along the axis direction of the screw conveyor (2); A first sliding groove (5) is arranged in the discrete opening (4), a first sliding block (6) is slidingly arranged in the first sliding groove (5), and one end of the first sliding block (6) is elastically connected to the inner end face of the first sliding groove (5) through a first spring (7); A torsion shaft (8) is rotatably arranged on the first sliding block (6), one end of the torsion shaft (8) is provided with a disc (9), and a plurality of discrete holes (16) are arranged on the end face of the disc (9); A pressure tank (34) is arranged at the inner axial position of the rotating drum (3) and corresponds to the torsion shaft (8), a torsion groove (10) is arranged on the outer wall of the pressure tank (34) and corresponds to the torsion shaft (8), and a tooth plate (12) is fixedly arranged on the inner wall of the torsion groove (10); The other end of the torsion shaft (8) is fixedly sleeved with a gear (11), and the gear (11) is engaged with the tooth plate (12). A plurality of pressure tanks (34) are connected in sequence through a linkage shaft, the end of the outermost pressure tank (34) is connected with a linkage frame (14), and the other end of the linkage frame (14) is connected with a hydraulic cylinder (15) arranged in the rotating drum (3).

2. A horizontal spiral-decanting disc centrifuge according to claim 1, characterized in that, The disc (9) is arranged in the conical section of the rotating drum (3) and abuts against the inner wall of the rotating drum (3), and a plurality of groups of discs (9) arranged along the axial direction of the rotating drum (3) are arranged in a stepped and dispersed manner.

3. A horizontal spiral-decanting disc centrifuge according to claim 1, characterized in that, A second sliding groove (32) is arranged on the inner wall of the torsion groove (10), a second sliding block is slidingly connected in the second sliding groove (32), and the torsion shaft (8) is rotatably connected with the second sliding block.

4. A horizontal spiral-decanting disc centrifuge according to claim 1, wherein A buffer shaft (36) is sleeved in the torsion shaft (8), a mesh surface disc (38) is clamped in the port at the bottom of the buffer shaft (36), a second spring (37) is connected to the bottom of the mesh surface disc (38), and the mesh surface disc (38) is elastically supported and connected with the inner bottom of the torsion shaft (8) through the second spring (37).

5. A horizontal spiral-decanting disc centrifuge according to claim 1, wherein The disc (9) is arranged in a hollow structure, a discrete cylinder (17) is rotatably connected in the discrete hole (16), and a plurality of shunt holes (18) are arranged in an annular array on the inner wall of the discrete cylinder (17).

6. A horizontal spiral-decanting disc centrifuge according to claim 5, characterized in that A plurality of fins (20) are arranged in an annular array on the outer wall of the discrete cylinder (17), the plurality of fins (20) are arranged in a staggered manner with the plurality of shunt holes (18), a partition ring (19) is connected to the periphery of the disc (9) corresponding to the fins (20), and an air inlet pipe (21) is communicated on the outer wall of the partition ring (19) along the tangent direction of the plurality of fins (20).

7. A horizontal spiral-decanting disc centrifuge according to claim 6, characterized in that Sealing sleeves (25) are clamped on both ends of the pressure tank (34), a same fixed shaft (35) is slidingly sleeved in a plurality of sealing sleeves (25), the end of the fixed shaft (35) is connected to the inside of the rotating drum (3) through a support, a piston disc (24) is sleeved in the pressure tank (34), and the piston disc (24) is fixedly sleeved on the fixed shaft (35).

8. A horizontal spiral-decanting disc centrifuge according to claim 7, characterized in that The outer wall of the pressure tank (34) corresponds to one side of the piston disc (24) and is respectively connected with a first suction pipe (22) and a first pressure relief pipe (28), the first suction pipe (22) and the first pressure relief pipe (28) are respectively provided with a first one-way valve (23) and a third one-way valve (29), the outer wall of the pressure tank (34) corresponds to the other side of the piston disc (24) and is respectively connected with a second suction pipe (26) and a second pressure relief pipe (30), the second suction pipe (26) and the second pressure relief pipe (30) are respectively provided with a second one-way valve (27) and a fourth one-way valve (31), the other end of the first pressure relief pipe (28) is connected with the torsion shaft (8) on one side, and the other end of the second pressure relief pipe (30) is connected with the torsion shaft (8) on the other side.

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