A segmented sedimentation filtration centrifuge

Abstract

The application discloses a sectional sedimentation and filtration centrifuge, which comprises a sedimentation section spiral shaft, a filtration section spiral shaft, a sedimentation section drum and a filtration section drum; the left end of the sedimentation section drum is connected with the filtration section drum, and the left end of the sedimentation section drum is provided with a filtration section spiral discharge port which is communicated with the filtration section drum; the inner wall of the sedimentation section drum is rotationally connected with the sedimentation section spiral shaft; the inner wall of the filtration section drum is rotationally connected with the filtration section spiral shaft; the sedimentation section drum and the filtration section drum are located in a machine shell; and the right end of the sedimentation section spiral shaft and the sedimentation section drum is connected with a differential transmission assembly. Compared with a conventional small-diameter filtration section horizontal screw centrifuge, the final material discharge dryness is higher, and the dewatering performance is obviously optimized; the thin-layer filter cake has stronger permeability, and if water washing and purification of solid-phase materials are needed, the washing medium can uniformly penetrate the material layer, and the filter cake washing is more sufficient.

Description

Technical Field

[0001] This invention relates to a segmented sedimentation filtration centrifuge. Background Technology

[0002] Horizontal spiral sedimentation centrifuges are core continuous dewatering equipment in the field of solid-liquid separation, and are widely used in the solid-liquid separation of slurries and suspensions in industries such as chemical, environmental protection, food, and mineral processing.

[0003] Conventional integrated horizontal spiral sedimentation filter centrifuges use a single-diameter drum structure, with the filtration section located at the smallest diameter end of the drum, resulting in significant performance shortcomings in the overall structure.

[0004] During the operation of the equipment, all the solid material after the initial separation in the settling section is gathered into the small-diameter filter drum. Due to the limited space of the inner diameter of the filter section, the effective capacity of the drum is relatively small, and the solid phase is prone to forming a thick filter cake after accumulation.

[0005] Thick filter cakes significantly increase the permeation resistance of liquid through the filter cake and filter screen, obstructing the filtrate discharge path and making it difficult to fully remove residual moisture from the material. This results in lower overall dehydration efficiency and upper limit of solid dryness. At the same time, thick filter cakes easily trap fine particles and impurities, making the filter cake dense and with low porosity. If subsequent washing or replacement purification operations are required, the washing medium cannot penetrate the material layer evenly, resulting in poor material washing effect and defects such as insufficient washing and high water consumption. Therefore, a segmented sedimentation filtration centrifuge is proposed to address the above problems. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing centrifuges and provide a segmented sedimentation filtration centrifuge that improves the dehydration effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a segmented sedimentation filtration centrifuge, comprising: The settling section spiral shaft, the filtration section spiral shaft, the settling section drum, and the filtration section drum; The left end of the settling section drum is connected to the filtering section drum, and the left end of the settling section drum has a filtering section spiral discharge port that connects to the filtering section drum. The inner wall of the settling section drum is rotatably connected to the settling section spiral shaft; the inner wall of the filtration section drum is rotatably connected to the filtration section spiral shaft. Both the settling section drum and the filtering section drum are located inside the housing, and the right end of the settling section drum and the left end of the filtering section drum are connected to the housing through a support assembly. A differential transmission assembly is connected to the right end of the settling section spiral shaft and the settling section drum.

[0008] Preferably, the support component includes: Left connecting shaft and right connecting shaft; The left connecting shaft is connected to the left end of the filter section drum; the left end side wall of the housing is connected to a left bearing seat, the left bearing seat is equipped with a left bearing, and the left connecting shaft is assembled in the left bearing. The right connecting shaft is located at the right end of the settling section drum; a right bearing seat is connected to the right side wall of the housing, a right bearing is installed inside the right bearing seat, and the right connecting shaft is assembled inside the right bearing.

[0009] Preferably, the differential transmission assembly includes: A rotating drum driven wheel, the left end of which is connected to a pulley connecting seat, and the left end of the pulley connecting seat is connected to the right connecting shaft; A spiral driven wheel, one side of which is connected to a drive shaft, one end of which passes through the drum driven wheel and is connected to the right end of the spiral shaft of the filter section; A planetary differential is disposed inside the driven wheel of the rotating drum. The housing of the planetary differential is connected to the driven wheel of the rotating drum via a drive shaft. The output sun gear of the planetary differential is connected to the drive shaft of the helical driven wheel.

[0010] Preferred options also include: The feed pipe extends axially along the left connecting shaft into the interior of the sedimentation section spiral shaft and is connected to the filter section drum through the sedimentation section spiral discharge port.

[0011] Preferably, the right end of the settling section drum is provided with a settling section drum drain port; The inner wall of the filter section drum is connected to a screen; and a through-hole drainage groove for the filter section drum is opened on the inner wall; and the drainage groove for the filter section drum and the drain outlet of the settling section drum are both connected to the machine casing. A settling zone drain outlet is provided at the right end of the lower side wall of the housing; a filtration zone drain outlet is provided at the left end of the lower side wall.

[0012] Preferably, the left end of the filter section drum has a filter section drum discharge port, and the filter section drum discharge port is connected to the machine casing; The material outlet is provided at the left end of the lower side wall of the housing.

[0013] Preferably, the driven drum wheel is connected to a main motor; the driven spiral wheel is connected to an auxiliary motor.

[0014] Preferably, the housing is mounted on a base; and the lower ends of the legs of the base are connected to shock-absorbing feet.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This segmented sedimentation filtration centrifuge can remove most of the free water in the material in advance, greatly reducing the load on the filtration section; at the same time, the diameter of the filtration section drum is larger and the internal capacity is higher, so that the solid material can form a thin filter cake after entering, reducing the filtrate permeation resistance. Compared with the traditional small-diameter filtration section horizontal screw centrifuge, the final output dryness of the material is higher and the dewatering performance is significantly optimized; the thin filter cake has stronger permeability, and if the solid material needs to be washed and purified, the washing medium can penetrate the material layer evenly, and the filter cake is washed more thoroughly. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a top view of the segmented sedimentation filtration centrifuge of the present invention; Figure 2 This is a side view of the segmented sedimentation filtration centrifuge of the present invention; Figure 3 This is a cross-sectional view of the segmented sedimentation filtration centrifuge of the present invention; Figure 4 This is a partial cross-sectional view of the segmented sedimentation filtration centrifuge of the present invention.

[0017] In the diagram: 1. Screw shaft of settling section; 2. Screw shaft of filtration section; 3. Drum of settling section; 4. Drum of filtration section; 5. Screw outlet of filtration section; 6. Left connecting shaft; 7. Right connecting shaft; 8. Left bearing seat; 9. Driven wheel of drum; 10. Pulley connecting seat; 11. Driven wheel of screw; 12. Planetary differential; 13. Feed pipe; 14. Screw outlet of settling section; 15. Drain outlet of settling section drum; 16. Screen; 17. Drain trough of filtration section drum; 18. Drain outlet of settling zone; 19. Drain outlet of filtration zone; 20. Outlet of filtration section drum; 21. Material outlet; 22. Main motor; 23. Auxiliary motor; 24. Machine casing; 25. Machine base; 26. Vibration damping foot; 27. Right bearing seat; 28. Oil pump motor. 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] like Figures 1-4As shown, a segmented sedimentation filter centrifuge includes a sedimentation section spiral shaft 1, a filter section spiral shaft 2, a sedimentation section drum 3, and a filter section drum 4. The left end of the sedimentation section drum 3 is connected to the filter section drum 4, and the left end of the sedimentation section drum 3 has a filter section spiral discharge port 5 that communicates with the filter section drum 4. The inner wall of the sedimentation section drum 3 is rotatably connected to the sedimentation section spiral shaft 1. The inner wall of the filter section drum 4 is rotatably connected to the filter section spiral shaft 2. Both the sedimentation section drum 3 and the filter section drum 4 are located inside a casing 24, and the right end of the sedimentation section drum 3 and the left end of the filter section drum 4 are connected to the casing 24 through a support assembly. A differential transmission assembly is connected to the right end of the sedimentation section spiral shaft 1 and the sedimentation section drum 3.

[0020] like Figure 3 As shown, the support assembly includes a left connecting shaft 6 and a right connecting shaft 7; the left connecting shaft 6 is connected to the left end of the filter section drum 4; the left end side wall of the housing 24 is connected to a left bearing seat 8, the left bearing seat 8 houses a left bearing, and the left connecting shaft 6 is assembled inside the left bearing; the right connecting shaft 7 is at the right end of the settling section drum 3; the right end side wall of the housing 24 is connected to a right bearing seat 27, the right bearing seat 27 houses a right bearing, and the right connecting shaft 7 is assembled inside the right bearing.

[0021] like Figure 3 As shown, the differential transmission assembly includes a drum driven wheel 9, a helical driven wheel 11, and a planetary differential 12. The left end of the drum driven wheel 9 is connected to a pulley connecting seat 10, and the left end of the pulley connecting seat 10 is connected to a right connecting shaft 7. One side of the helical driven wheel 11 is connected to a drive shaft, one end of which passes through the drum driven wheel 9 and connects to the right end of the filter section helical shaft 2. The planetary differential 12 is disposed inside the drum driven wheel 9, and its housing is connected to the drum driven wheel 9. The output sun gear of the planetary differential 12 is connected to the drive shaft connected to the helical driven wheel 11. The drum driven wheel 9 is connected to a main motor 22; the helical driven wheel 11 is connected to an auxiliary motor 23.

[0022] It also includes a feed pipe 13, the right end of which extends axially along the left connecting shaft 6 into the interior of the sedimentation section spiral shaft 1, and is connected to the filter section drum 4 through the sedimentation section spiral discharge port 14.

[0023] The right end of the settling drum 3 is provided with a settling drum drain port 15; the inner wall of the filter drum 4 is connected with a screen 16; and a through-hole filter drum drain trough 17 is provided on the inner wall; and both the filter drum drain trough 17 and the settling drum drain port 15 are connected to the casing 24; the right end of the lower side wall of the casing 24 is provided with a settling zone drain port 18; and the left end of the lower side wall is provided with a filter zone drain port 19.

[0024] A filter section drum discharge port 20 is opened at the left end of the filter section drum 4, and the filter section drum discharge port 20 is connected to the machine casing 24; a material discharge port 21 is opened at the left end of the lower side wall of the machine casing 24.

[0025] The housing 24 is mounted on the base 25; and the lower end of the legs of the base 25 is connected to the shock-absorbing feet 26. The entire housing 24 is fixedly supported on the base 25. The vibration generated by the high-speed rotation of the equipment is transmitted through the base 25 to the bottom shock-absorbing feet 26, which buffer, absorb shock and dampen noise, so as to realize the flexible support installation of the equipment.

[0026] like Figure 1 As shown, it also includes an oil pump motor 28; the oil pump motor 28 is used to drive the oil supply to continuously deliver lubricating oil to the left bearing housing 8, the right bearing housing 27 and the planetary differential 12. When the equipment is started, the oil pump motor 28 needs to be turned on first to establish a stable lubricating oil pressure, and then the main motor 22 that drives the driven drum wheel 9 and the auxiliary motor 23 that drives the driven helical wheel 11 are started to achieve lubrication, cooling and wear protection of the settling section helical shaft 1, the filtering section helical shaft 2, the settling section drum 3, the filtering section drum 4, the left connecting shaft 6, the right connecting shaft 7 and the planetary differential 12.

[0027] When the equipment is started, the oil pump motor 28 is turned on first to supply oil for lubrication. The lubricating oil is delivered to the left bearing housing 8, the right bearing housing 27 and the planetary differential 12, forming an oil film on each rotating mating surface. After the oil pressure is stable, the main motor 22 and the auxiliary motor 23 are started.

[0028] The main motor 22 drives the drum driven wheel 9, pulley connecting seat 10, and right connecting shaft 7 to rotate, driving the settling section drum 3 and the filtration section drum 4 to rotate synchronously at high speed; the auxiliary motor 23 drives the spiral driven wheel 11 and the transmission shaft to rotate, thereby driving the settling section spiral shaft 1 and the filtration section spiral shaft 2 to rotate; the planetary differential 12 arranged inside the drum driven wheel 9 connects the drum and the spiral transmission structure, so that the drum and the spiral form a stable speed difference, while amplifying the torque of the spiral pushing the material.

[0029] The material to be separated is fed into the feed pipe 13, which extends along the left connecting shaft 6 into the interior of the settling section spiral shaft 1. The material is evenly dispersed into the settling section drum 3 through the settling section spiral discharge port 14. Under the action of centrifugal force, the material quickly separates into solid and liquid phases. The clarified liquid phase flows through the settling section drum discharge port 15 into the settling chamber of the casing 24 and is finally discharged from the settling zone discharge port 18. Solid material is continuously pushed to the left by the spiral shaft 1 of the settling section, and is fed into the larger diameter spiral discharge port 5 of the filter section through the left end of the settling section drum 3 to form a thin filter cake.

[0030] The inner wall of the filter section drum 4 is equipped with a screen 16. The residual water in the filter cake passes through the screen 16 under the action of centrifugal force. The filtrate flows into the filter chamber of the machine housing 24 through the drain trough 17 of the filter section drum and is discharged separately from the drain outlet 19 of the filter area. The dehydrated dry filter cake is pushed by the filter section screw shaft 2 to the discharge outlet 20 of the filter section drum, falls into the bottom of the machine housing 24, and is finally continuously discharged from the material discharge outlet 21.

[0031] The machine casing 24 is fixed on the base 25. The shock-absorbing feet 26 at the bottom of the base 25 buffer the vibration generated by the high-speed operation of the equipment, reducing operating noise and component wear.

[0032] This segmented sedimentation filter centrifuge uses an extended sedimentation drum 3 for pretreatment, which can remove most of the free water in the material in advance, significantly reducing the load on the filtration section. At the same time, the filtration drum 4 has a larger diameter and higher internal volume, which allows the solid material to form a thin filter cake after entering, reducing the resistance to filtrate penetration. Compared with traditional small-diameter horizontal screw centrifuges, the final output material has a higher dryness and significantly improved dewatering performance. The thin filter cake has stronger permeability, and if the solid material needs to be washed and purified, the washing medium can penetrate the material layer evenly, resulting in more thorough washing of the filter cake.

[0033] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A segmented sedimentation filtration centrifuge, characterized in that, include: The settling section spiral shaft (1), the filtration section spiral shaft (2), the settling section drum (3), and the filtration section drum (4). The left end of the settling section drum (3) is connected to the filter section drum (4), and the left end of the settling section drum (3) is provided with a filter section spiral discharge port (5) that connects to the filter section drum (4). The inner wall of the settling section drum (3) is rotatably connected to the settling section spiral shaft (1); the inner wall of the filtration section drum (4) is rotatably connected to the filtration section spiral shaft (2). The settling section drum (3) and the filtering section drum (4) are both located inside the housing (24), and the right end of the settling section drum (3) and the left end of the filtering section drum (4) are both connected to the housing (24) through a support assembly. The right ends of the settling section spiral shaft (1) and the settling section drum (3) are connected to a differential transmission assembly.

2. The segmented sedimentation filter centrifuge according to claim 1, characterized in that, The support components include: Left connecting shaft (6) and right connecting shaft (7); The left connecting shaft (6) is connected to the left end of the filter section drum (4); the left end side wall of the housing (24) is connected to a left bearing seat (8), the left bearing seat (8) is installed inside the left bearing seat (8), and the left connecting shaft (6) is assembled inside the left bearing. The right connecting shaft (7) is located at the right end of the settling section drum (3); the right end side wall of the housing (24) is connected to a right bearing seat (27), and a right bearing is installed inside the right bearing seat (27), and the right connecting shaft (7) is assembled inside the right bearing.

3. The segmented sedimentation filtration centrifuge according to claim 2, characterized in that, The differential transmission assembly includes: The left end of the drum driven wheel (9) is connected to the pulley connecting seat (10), and the left end of the pulley connecting seat (10) is connected to the right connecting shaft (7). A spiral driven wheel (11) is connected to a drive shaft on one side. One end of the drive shaft passes through the drum driven wheel (9) and is connected to the right end of the filter section spiral shaft (2). Planetary differential (12) is located inside the driven drum wheel (9). The housing of the planetary differential (12) is connected to the driven drum wheel (9) in a transmission connection. The output sun gear of the planetary differential (12) is connected to the drive shaft connected to the helical driven wheel (11).

4. The segmented sedimentation filter centrifuge according to claim 2, characterized in that, Also includes: The feed pipe (13) extends axially along the left connecting shaft (6) into the interior of the sedimentation section spiral shaft (1) and is connected to the filter section drum (4) through the sedimentation section spiral discharge port (14).

5. The segmented sedimentation filter centrifuge according to claim 1, characterized in that, The right end of the settling section drum (3) is provided with a settling section drum drain port (15). The inner wall of the filter section drum (4) is connected to a screen (16); and a through-hole filter section drum drainage groove (17) is provided on the inner wall; and the filter section drum drainage groove (17) and the sedimentation section drum drain outlet (15) are both connected to the casing (24). The lower side wall of the casing (24) has a settling zone drain port (18) on the right end and a filtration zone drain port (19) on the left end.

6. The segmented sedimentation filter centrifuge according to claim 1, characterized in that, The filter section drum (4) has a filter section drum outlet (20) at its left end, and the filter section drum outlet (20) is connected to the machine casing (24). The material outlet (21) is provided at the left end of the lower side wall of the housing (24).

7. The segmented sedimentation filter centrifuge according to claim 3, characterized in that, The driven drum wheel (9) is connected to a main motor (22); the driven spiral wheel (11) is connected to an auxiliary motor (23).

8. The segmented sedimentation filter centrifuge according to claim 1, characterized in that, The housing (24) is mounted on the base (25); and the lower end of the legs of the base (25) is connected to a shock-absorbing foot (26).

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