Flat plate type sedimentation centrifuge

Abstract

The utility model discloses a flat plate type sedimentation centrifuge which comprises a flat plate machine base, supporting legs, a rotary driving mechanism, a main shaft and a rotary drum. The flat base is fixed to the tops of the supporting legs, the spindle is vertically mounted on the flat base through a bearing, the rotary driving mechanism is in transmission connection with the bottom end of the spindle, and the top end of the spindle is fixedly connected with the drum. When the rotary driving mechanism works, the rotary drum can be driven to rotate, under the action of centrifugal force generated by high-speed rotation of the rotary drum, a stock solution is separated by utilizing the specific gravity difference of a liquid phase, filtrate is sucked out of the machine through the liquid suction pipe, and a solid-phase material is left on the wall of the rotary drum and is manually discharged from the upper part. Through the sedimentation type structural design, the gravity center of the centrifugal machine can be lowered, so that shaking or vibration is avoided, and the machine runs stably; meanwhile, the flat machine base can be used as a working platform for workers during maintenance, and maintenance operation is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of centrifuges, and in particular relates to a flat-plate sedimentation centrifuge. Background Technology

[0002] Centrifuges use a motor to drive a drum to rotate at high speed, generating a powerful centrifugal force that accelerates the sedimentation or stratification of components of different densities in a mixture (such as solid particles, liquids, or liquids of different densities). The core principle is to use centrifugal force to cause denser particles to move outwards and form sediment, while less dense components move closer to the center, thus achieving solid-liquid separation or liquid-liquid stratification.

[0003] Current centrifuges have a high center of gravity, which makes them prone to shaking and vibration during operation, resulting in unstable operation. Utility Model Content

[0004] The purpose of this invention is to provide a flat-plate sedimentation centrifuge that can lower the centrifuge's center of gravity, making it operate smoothly.

[0005] This utility model is implemented as follows: a flat plate sedimentation centrifuge includes a flat plate base, support legs, a rotary drive mechanism, a main shaft, and a rotating drum; the flat plate base is fixed to the top of the support legs, the main shaft is vertically mounted on the flat plate base through bearings, the rotary drive mechanism is connected to the bottom end of the main shaft, and the top end of the main shaft is fixedly connected to the rotating drum.

[0006] Furthermore, support legs are arranged at the four corners of the flatbed base, and damping shock absorbers are provided between each support leg and the flatbed base.

[0007] Furthermore, the rotary drive mechanism includes a rotary motor, a driving wheel, and a driven wheel; the bottom end of the rotating shaft of the rotary motor is coaxially connected to the driving wheel, the driven wheel is coaxially connected to the bottom end of the main shaft, and the driving wheel and the driven wheel are connected by a belt for transmission.

[0008] Furthermore, the flatbed sedimentation centrifuge also includes a rolling bearing and a bearing housing. The bearing housing is fixed on the flatbed base, the rolling bearing is embedded in the mounting cavity of the bearing housing, and the main shaft passes vertically through the rolling bearing.

[0009] Furthermore, the top of the bearing housing protrudes from the top surface of the flatbed base, and the top of the bearing housing is truncated cone-shaped. The bottom of the drum has a truncated cone-shaped recessed cavity corresponding to the position of the top of the bearing housing.

[0010] Furthermore, the flat-plate sedimentation centrifuge also includes an outer shell and a top cover plate. The drum is located inside the outer shell, and the top cover plate is placed on top of the outer shell to cover the top opening of the outer shell.

[0011] Furthermore, the flat-plate sedimentation centrifuge also includes a flip-top cylinder, which is fixed above the top edge of the outer shell cylinder. The piston rod of the flip-top cylinder is hinged to the upper cover plate. When the flip-top cylinder is working, it can drive the upper cover plate to flip upward to a half-open state.

[0012] Furthermore, the flat-plate sedimentation centrifuge also includes a skimming device mounted on the upper cover plate. The skimming device includes a skimming drive mechanism, a pipette, a spiral tube, and a guide tube seat. One end of the pipette is connected to the spiral tube, and the other end extends into the drum. The spiral tube is threaded into the guide tube seat. The skimming drive mechanism is fixedly connected to the outer periphery of the spiral tube. When the skimming drive mechanism rotates, it can drive the spiral tube to rotate, thereby driving the pipette to move along the radial direction of the drum to adjust the distance between the pipette opening and the inner wall of the drum.

[0013] Furthermore, the portion of the straw located on the rotating drum is L-shaped.

[0014] Furthermore, the upper cover plate is also equipped with a feed pipe, a liquid suction pipe, an exhaust port, an explosion-proof light, and an observation window.

[0015] Compared with the prior art, the advantages of this utility model are as follows:

[0016] The flatbed sedimentation centrifuge provided by this utility model includes a flatbed base, support legs, a rotary drive mechanism, a main shaft, and a drum. The flatbed base is fixed to the top of the support legs, and the main shaft is vertically mounted on the flatbed base through bearings. Through the above sedimentation structure design, the center of gravity of the centrifuge can be lowered, thereby avoiding shaking or vibration and ensuring smooth machine operation. At the same time, the flatbed base can serve as a work platform for workers during maintenance, making maintenance operations convenient. Attached Figure Description

[0017] Figure 1 This is a schematic elevation sectional view of the flat-plate sedimentation centrifuge provided in the embodiments of this application;

[0018] Figure 2 This is a top view schematic diagram of the flat-plate sedimentation centrifuge provided in the embodiments of this application.

[0019] Marked in the image:

[0020] 1. Flatbed base, 2. Support leg, 3. Rotary drive mechanism, 4. Main shaft, 5. Drum, 6. Rolling bearing, 7. Rotary motor, 8. Drive wheel, 9. Damping shock absorber, 10. Bearing seat, 11. Outer shell, 12. Top cover, 13. Flip-top cylinder, 14. Skimming device, 15. Feed pipe, 16. Suction pipe, 17. Exhaust vent, 18. Explosion-proof light, 19. Observation window, 10. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] Please see Figure 1 and Figure 2 This embodiment illustrates a flatbed sedimentation centrifuge, comprising a flatbed base 1, support legs 2, a rotary drive mechanism, a main shaft 3, and a rotating drum 4. The flatbed base 1 is fixed to the top of the support legs 2. The main shaft 3 is vertically mounted on the flatbed base 1 via rolling bearings 5. The rotary drive mechanism is connected to the bottom end of the main shaft 3, and the top end of the main shaft 3 is fixedly connected to the rotating drum 4. After the raw liquid is injected into the rotating drum 4, the rotary drive mechanism drives the rotating drum 4 to rotate. Under the centrifugal force generated by the high-speed rotation of the rotating drum 4, the raw liquid is separated by the specific gravity difference of the liquid phases. The filtrate is sucked out of the machine through a suction pipe, while the solid material remains on the wall of the rotating drum 4. The separation time varies depending on the material, and then the equipment automatically stops. The solid material is manually unloaded from the top.

[0024] The above-described sinking structure design lowers the centrifuge's center of gravity, preventing swaying or vibration and ensuring smooth machine operation. Simultaneously, the flat base 1 serves as a work platform for maintenance, facilitating maintenance operations. To further lower the center of gravity, counterweights can be added to the flat base 1.

[0025] This embodiment does not limit the specific structure of the rotary drive mechanism. For example, the rotary drive mechanism includes a rotary motor 61, a driving wheel 62, and a driven wheel 63. The bottom end of the rotating shaft of the rotary motor 61 is coaxially connected to the driving wheel 62, and the driven wheel 63 is coaxially connected to the bottom end of the main shaft 3. The driving wheel 62 and the driven wheel 63 are connected by a belt for transmission. With the above design, when the rotary motor 61 is working, it can drive the main shaft 3 and the drum 4 to rotate. In order to place the rotary motor 61, one side edge of the flat plate base 1 in this embodiment is designed in an L-shape to form two steps of different heights, so that the rotary motor 61 can be fixed on the lower step surface at the edge.

[0026] To further reduce vibration, support legs 2 are arranged at the four corners of the flatbed base 1 in this embodiment. Each support leg 2 and the flatbed base 1 is provided with a damping shock absorber 7 to absorb the force generated on the flatbed base 1 and support legs 2 during the rotation of the drum 4.

[0027] This embodiment also provides an installation structure for the main shaft 3. Specifically, the installation structure includes a rolling bearing 5 and a bearing housing 8. The bearing housing 8 is fixed on the flatbed base 1. The rolling bearing 5 is embedded in the mounting cavity of the bearing housing 8. The main shaft 3 is vertically inserted into the rolling bearing 5 and can rotate relative to the bearing housing 8.

[0028] The top of the bearing housing 8 protrudes from the top surface of the flatbed base 1, and the top of the bearing housing 8 is truncated cone-shaped. The bottom of the drum 4 has a truncated cone-shaped recessed cavity corresponding to the top of the bearing housing 8. This shape of the drum 4 can further lower the center of gravity, making the machine run more smoothly.

[0029] Specifically, the centrifuge in this embodiment also includes an outer shell 9, an upper cover plate a, a flip-top cylinder b, and a skimming device c; the drum 4 is located inside the outer shell 9, and the upper cover plate a is placed on top of the outer shell 9 to cover the top opening of the outer shell 9. The lower edge of the outer shell 9 is fixed to the flat base 1 with clamping screws for easy disassembly, cleaning, and maintenance.

[0030] Two flip-top cylinders b are fixed above the top edge of the outer shell 9. The piston rod of the flip-top cylinder b is hinged to the upper cover plate a. When the flip-top cylinder b is working, it can drive the upper cover plate a to flip upward to a half-open state. The control valve of the flip-top cylinder b is required to use a 3-position solenoid valve to prevent the upper cover plate a from falling off automatically when the power is cut off.

[0031] The skimming device c is installed on the upper cover plate a and is used to aspirate the filtrate. The skimming device c includes a skimming drive mechanism, a pipette, a spiral tube, and a guide tube seat. One end of the pipette is connected to the spiral tube, and the other end extends into the rotating drum 4. The spiral tube is threaded into the guide tube seat. The skimming drive mechanism is fixedly connected to the outer periphery of the spiral tube. When the skimming drive mechanism rotates, it drives the spiral tube to rotate, thereby moving the pipette along the radial direction of the rotating drum 4 to adjust the distance between the pipette opening and the inner wall of the rotating drum 4, typically 4-100 mm. Preferably, the portion of the pipette located in the rotating drum is L-shaped, so that the pipette opening faces the inner wall of the rotating drum 4.

[0032] In this embodiment, the drum 4 is a cylindrical, non-porous structure, and baffles are uniformly welded on the inner wall of the drum 4 to improve the decolorization speed of the material.

[0033] The upper cover plate a is also equipped with a feed pipe d, a liquid suction pipe e, an exhaust port f, an explosion-proof light g, and an observation window h. The feed pipe is used for feeding, the liquid suction pipe is used as a channel for sucking out the filtrate, the exhaust port d is used to discharge the gas inside the outer shell cylinder 9, the explosion-proof light e is used for lighting, and the observation window f is used for workers to observe the situation inside the drum.

[0034] To make the working principle and process of the centrifuge in this embodiment clearer, this embodiment takes the processing of MLCC slurry (a mixture containing toluene, alcohol, and ceramic powder) as an example to illustrate its process flow:

[0035] Process flow for separating large particles:

[0036] 1. The raw material slurry is pumped into a centrifuge (top feed) using a diaphragm pump from a mobile mixing tank.

[0037] 2. The top cover is sealed, the equipment control cabinet is pneumatic, and it includes a 2-speed program. It runs automatically according to the standard speed and time, and automatically stops and alarms when the time is up.

[0038] 3. During rotation, high-speed centrifugal force is used to cause large-diameter particles in the slurry to concentrate towards the outer ring and adhere tightly to the inner wall of the drum 4.

[0039] 4. When the time comes, the operator should immediately go to the equipment and use the diaphragm pump to pump out the material.

[0040] 5. After the material is discharged, the exhaust vent d at the top of the equipment will open automatically. After the wet material on the inner wall of the drum 4 evaporates the toluene alcohol, use a scraper to scrape off the dry powder on the inner wall and remove it.

[0041] 6. Use an alcohol cloth to wipe the inner wall of the drum 4 clean.

[0042] Micropowder removal process flow:

[0043] 1. The raw material slurry is pumped into a centrifuge (top feed) using a diaphragm pump in a mobile mixing tank;

[0044] 2. The top cover is sealed, the equipment control cabinet is pneumatic, and includes a 2-speed program that runs automatically according to the standard speed and time, automatically stopping and alarming when the time is up.

[0045] 3. During rotation, high-speed centrifugal force is used to cause large-diameter particles in the slurry to concentrate towards the outer ring and adhere tightly to the inner wall of the drum 4.

[0046] 4. During high-speed rotation, the particle size of the slurry on the inner side of the liquid surface is too small. Use the movable discharge port at the top to move to the liquid surface and let the slurry flow out by inertia. The outflow amount is calculated based on the weight and then stopped.

[0047] 5. When the time comes, the operator should immediately go to the equipment and use the diaphragm pump to pump out the material.

[0048] 6. After the material is discharged, the exhaust vent d at the top of the equipment will open automatically. After the wet material on the inner wall of the drum 4 evaporates the toluene alcohol, use a scraper to scrape off the dry powder from the inner wall and remove it.

[0049] 7. Use an alcohol cloth to wipe the inner wall of the drum 4 clean.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flat-bed sedimentation centrifuge, characterized in that The plate base is fixed on the top of the supporting legs, the main shaft is vertically installed on the plate base through a bearing, the rotary drive mechanism is in transmission connection with the bottom end of the main shaft, and the top end of the main shaft is fixedly connected with the rotating drum.

2. A flat-bed sedimentation centrifuge according to claim 1, characterised in that The supporting legs are arranged at the four corners below the plate base, and a damping shock absorber is arranged between each supporting leg and the plate base.

3. The flat-bed sedimentation centrifuge of claim 1, wherein, The rotary drive mechanism comprises a rotary motor, a driving wheel and a driven wheel, the rotary motor is coaxially connected with the driving wheel at the bottom end of the rotating shaft, the driven wheel is coaxially connected with the bottom end of the main shaft, and the driving wheel and the driven wheel are in transmission connection through a belt.

4. The flat plate sedimentation centrifuge according to claim 1, characterized in that The bearing seat is fixed on the plate base, the rolling bearing is embedded in the installation cavity of the bearing seat, and the main shaft vertically penetrates the rolling bearing.

5. A plate and filter bowl assembly according to claim 4, wherein, The top end of the bearing seat protrudes from the top surface of the plate base, the top end of the bearing seat is in the shape of a truncated cone, and the bottom end of the rotating drum has a recessed cavity in the shape of a truncated cone corresponding to the position of the top end of the bearing seat.

6. The flat plate settling centrifuge of claim 1, wherein, The rotating drum is located in the shell cylinder, and the upper cover plate covers the top opening of the shell cylinder.

7. A plate and filter bowl assembly according to claim 6, wherein The flip cylinder is fixed above the top end edge of the shell cylinder, the piston rod of the flip cylinder is hinged to the upper cover plate, and the flip cylinder can drive the upper cover plate to be flipped upward to a half-open state when the flip cylinder works.

8. The flat-bed sedimentation centrifuge of claim 6, wherein, The liquid skimming device is installed on the upper cover plate, the liquid skimming device comprises a liquid skimming drive mechanism, a suction pipe, a spiral pipe and a conduit seat, one end of the suction pipe is in butt joint with the spiral pipe, the other end of the suction pipe extends into the rotating drum, the spiral pipe is in threaded connection with the conduit seat, the liquid skimming drive mechanism is fixedly connected with the outer periphery of the spiral pipe, and the liquid skimming drive mechanism can drive the spiral pipe to rotate when the liquid skimming drive mechanism rotates, so as to drive the suction pipe to move along the radial direction of the rotating drum, so as to adjust the distance between the pipe opening of the suction pipe and the inner wall surface of the rotating drum.

9. A plate and filter bowl assembly according to claim 8, wherein, The suction pipe is in L-shaped at the part of the rotating drum.

10. A plate and filter bowl assembly according to any one of claims 6 to 9, wherein, The upper cover plate is further provided with a feeding pipe, a liquid suction pipe, an air outlet, an explosion-proof lamp and an observation window.

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