Disc centrifuge for separating starch slurry

Abstract

The invention discloses a disc centrifuge for starch slurry separation, and relates to the technical field of starch slurry filtration. The device comprises a support, a centrifugal tank is rotationally installed in the support, a centrifugal shaft is rotationally installed in the centrifugal tank, a shaft ring is slidably connected to the outer side of the centrifugal shaft, a first disc and a second disc are arranged at the top and the bottom of the shaft ring correspondingly, and the first disc and the second disc are symmetrically arranged relative to the shaft ring; a rubber pressing piece is fixedly connected to the outer side of the shaft ring, a connecting ring is arranged on the outer side of the rubber pressing piece, filter screens are arranged in the first disc and the second disc, and connecting assemblies are arranged at the two ends of the centrifugal tank. Through the arrangement of the disc I, the disc II and the rubber pressing sheet, starch adhered to the rubber pressing sheet is shaken off, and the shaken-off starch enters the liquid discharging cavity and is discharged through the liquid discharging pipe, so that starch slurry impurities can be efficiently filtered, and starch waste is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of starch slurry filtration, and in particular to a disc centrifuge used for starch slurry separation. Background Art

[0002] As an important natural polymer material, starch is widely used in food, textile, papermaking, pharmaceutical and other industries. In the starch production process, raw materials such as corn, potato or wheat are soaked, ground, pulped and other steps to form starch slurry. In order to further extract pure starch, it is necessary to separate the impurities in the slurry from the slurry to improve the purity of the starch.

[0003] In a Chinese patent (publication number: CN216320380U), a starch fine fiber extraction and separation device is disclosed, including a box body, a feed port is opened on the top surface of the box body, and two inclined filter screens are hinged in the box body, the two filter screens are distributed up and down, and the two filter screens have different filtering grades. This patent mainly adopts the method of gravity filtration to make the slurry flow naturally through the filter screen. Since the starch slurry has a high concentration and high viscosity, the conventional filtration processing speed is slow. The use of centrifugal filtration can improve the starch slurry filtration efficiency. In a Chinese patent (publication number: CN207786092U), a slurry centrifugal filter is disclosed, which aims to filter the slurry through a certain mesh size screen through a designed centrifugal filter by relying on the high-speed rotation of the equipment, so that the slurry will not form a crust during the filtration process, and the filtration efficiency is relatively high, and it is easy to clean. Although it can be applied to starch slurry filtration and can improve the filtration efficiency to a certain extent, due to the high density of starch particles, they will settle to the bottom under the action of centrifugal force, and the precipitated starch has a large viscosity. The precipitated starch is easy to stick to the large impurities filtered out, resulting in starch waste. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a disc centrifuge for separating starch slurry.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A disc centrifuge for separating starch slurry comprises a bracket, a centrifugal tank is rotatably mounted inside the bracket, a filter cartridge is arranged inside the centrifugal tank, a drainage cavity is arranged between the outer surface of the filter cartridge and the inner wall of the centrifugal tank, and two groups of drainage pipes are arranged outside the drainage cavity; A centrifugal shaft is rotatably installed inside the centrifugal tank, a shaft ring is slidably connected to the outside of the centrifugal shaft, a disc 1 and a disc 2 are respectively arranged on the top and bottom of the shaft ring, and the disc 1 and the disc 2 are symmetrically arranged about the shaft ring, a rubber pressing sheet is fixedly connected to the outside of the shaft ring, and a connecting ring is arranged on the outside of the rubber pressing sheet, and the connecting ring can slide up and down between the disc 1 and the disc 2, and a filter screen is arranged inside the disc 1 and the disc 2; Both ends of the centrifugal tank are provided with connecting components, which can be connected to the shaft ring and can seal the filter cartridge.

[0006] Furthermore, the disc one and the disc two are both designed in a trumpet shape, and the openings are far away from the shaft ring. Blades are arranged on the inner sides of the disc one and the disc two, and the blades are located between adjacent filter screens.

[0007] Furthermore, guide rods are provided at the top and the bottom of the connecting ring, and guide holes are provided through the inside of the disc one and the disc two, and the guide rods are inserted into the guide holes.

[0008] Furthermore, a sliding key is arranged on the outer side of the centrifugal shaft, a key slot is opened on the inner wall of the shaft ring, the sliding key is slidably connected in the key slot, and a rubber sliding pad is arranged on the inner wall of the key slot.

[0009] Furthermore, guide tubes are provided at both ends of the centrifugal tank, and the guide tubes are connected with both ends of the filter cartridge. The inner diameter of the guide tube is the same as the inner diameter of the filter cartridge. Connecting screw sleeves are provided at the top and bottom of the shaft ring. The connecting assembly includes a telescopic driving source 1 fixedly installed on the outer end of the guide tube, and a sealing slide is fixedly installed on the telescopic end of the telescopic driving source 1. The sealing slide is sealingly inserted in the guide tube. The internal sealing sliding connection of the sealing slide is provided with a connecting sleeve, and the connecting sleeve can be sealingly threadedly connected to the outside of the connecting ring. A connecting sleeve is rotatably installed inside the sealing slide, and a friction surface is provided at one end of the connecting sleeve located on the outside of the sealing slide, and the connecting sleeve is sleeved on the outside of the centrifugal shaft. The connecting sleeve can be threadedly connected to the connecting screw sleeve. A liquid inlet pipe and an air pressure pipe are provided at the top of the sealing slide, and the air pressure pipe is connected to an external air source.

[0010] Furthermore, a telescopic driving source 2 is fixedly installed on the top of the sealing slide, and a top ring is fixedly installed on the telescopic end of the telescopic driving source 2. The top ring is located in the sealing slide, and a magnetic ring is provided on the top of the connecting sleeve. The connecting sleeve can be adsorbed on the top ring through the magnetic ring. A plurality of slots are provided in a ring shape at the bottom of the top ring, and a plurality of plugs are provided in a ring shape at the top of the magnetic ring. The plugs can be plugged into the slots.

[0011] Furthermore, rubber sealing rings are provided on the outer sides of the disc 1 and the disc 2.

[0012] Furthermore, electric valves are provided inside the liquid inlet pipe and the liquid discharge pipe.

[0013] Furthermore, a driving motor is fixedly installed on the inner bottom of the bracket, and a driving pulley and a driven pulley are rotatably installed on the outer side of the bracket. The driving pulley and the driven pulley are connected by a transmission belt. Both the driving pulley and the driven pulley are double-groove pulleys. The driving pulley is fixedly installed on the output end of the driving motor, and the driven pulley is fixedly installed on the centrifugal tank.

[0014] The beneficial effects of the present invention are as follows: The present invention arranges the disc one, the disc two and the rubber pressing sheet. The disc one drives the starch slurry to rotate, so that the slurry passes through the filter cartridge under the action of centrifugal force. At the same time, the shaft ring drives the disc one and the disc two to move up and down. When moving up, the precipitated starch is washed by the slurry, falls on the rubber pressing sheet through the filter screen on the disc one, and the precipitated starch is separated from the impurities. Then, the connecting ring is controlled to move up and down relative to the shaft ring to shake off the starch sticking to the rubber pressing sheet. The shaken-off starch enters the drainage cavity and is discharged through the drainage pipe. Therefore, the starch slurry impurity filtration can be completed efficiently without causing starch waste.

[0015] The present invention turns over the centrifugal tank so that the second disc faces upward, the second disc participates in centrifugal driving and starch filtering, and the filtering surface of the first disc faces downward, so that impurities filtered last time can be discharged, the equipment does not need to be stopped for cleaning, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the centrifugal tank of the present invention; Figure 3 It is a schematic diagram of the internal structure of the centrifugal tank of the present invention; Figure 4 It is an exploded view of the centrifugal tank of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the centrifugal tank of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the disc 1 and the disc 2 of the present invention; Figure 7 It is a schematic diagram of the structure of the connection assembly of the present invention.

[0017] Figure numerals: 1, bracket; 11, driving pulley; 12, driven pulley; 2, centrifugal tank; 21, filter cartridge; 22, drainage chamber; 23, guide tube; 24, drainage pipe; 3, connecting assembly; 31, telescopic drive source one; 32, sealing slide; 33, connecting sleeve; 331, magnetic ring; 34, telescopic drive source two; 35, top ring; 36, connecting sleeve; 37, liquid inlet pipe; 38, air pressure pipe; 4, centrifugal shaft; 5, shaft ring; 51, connecting screw sleeve; 6, disc one; 61, filter screen; 62, blade; 7, disc two; 8, rubber pressing sheet; 9, connecting ring; 91, guide rod. DETAILED DESCRIPTION

[0018] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] Embodiment 1, as Figure 1-Figure 7 As shown, a disc centrifuge for separating starch slurry comprises a bracket 1, a centrifugal tank 2 is rotatably mounted inside the bracket 1, a filter cartridge 21 is arranged inside the centrifugal tank 2, a drainage cavity 22 is arranged between the outer surface of the filter cartridge 21 and the inner wall of the centrifugal tank 2, and two groups of drainage pipes 24 are arranged outside the drainage cavity 22; A centrifugal shaft 4 is rotatably installed inside the centrifugal tank 2, and a shaft ring 5 is slidably connected to the outside of the centrifugal shaft 4. A disc 1 6 and a disc 2 7 are respectively arranged on the top and bottom of the shaft ring 5. The disc 1 6 and the disc 2 7 are symmetrically arranged about the shaft ring 5. A rubber pressing sheet 8 is fixedly connected to the outside of the shaft ring 5. A connecting ring 9 is arranged on the outside of the rubber pressing sheet 8. The connecting ring 9 can slide up and down between the disc 1 6 and the disc 2 7. A filter screen 61 is arranged inside the disc 1 6 and the disc 2 7. Both ends of the centrifugal tank 2 are provided with connecting components 3 , which can be connected to the shaft ring 5 and can seal the filter cartridge 21 .

[0020] Furthermore, both the disc 1 6 and the disc 2 7 are designed in a trumpet shape, and the openings are far away from the shaft ring 5 . Blades 62 are disposed on the inner sides of the disc 1 6 and the disc 2 7 , and the blades 62 are located between adjacent filter screens 61 .

[0021] During filtration, disc 16 is used, and the lower connecting assembly 3 is connected to the bottom end of the shaft ring 5, and the starch slurry is injected into the centrifugal tank 2, and then the centrifugal shaft 4 is controlled to rotate, and the centrifugal shaft 4 drives the shaft ring 5 to rotate, and the shaft ring 5 drives disc 16 and disc 27 to rotate, and disc 16 drives the slurry to rotate, and the slurry generates centrifugal force, is thrown out of the filter cartridge 21, and enters the drainage chamber 22, and then is discharged through the drainage pipe 24, and the impurities are filtered inside the filter cartridge 21, and fall on disc 16 under the action of gravity. Since disc 16 and disc 27 are both trumpet-shaped, the impurities will be concentrated inside the disc 16, but in this process, some starch will precipitate, resulting in the mixing of starch and impurities. Therefore, during the centrifugal filtration process, it is necessary to control the shaft ring 5 to slide up and down along the centrifugal shaft 4, and the shaft ring 5 drives the disc 16 to stir the slurry to reduce starch precipitation. The connection assembly 3 is driven to rise and fall, and the connection assembly 3 can seal the filter cartridge 21 below the disc 2 7 to ensure that the slurry does not leak, and when the collar 5 slides upward, the slurry will flush the impurities and flush the precipitated starch therein, and the precipitated starch falls on the top of the rubber pressing sheet 8 through the filter screen 61, so that the impurities and the precipitated starch can be separated, and at the same time, the rubber pressing sheet 8 is tightly attached to the upper surface of the disc 2 7, and the rubber pressing sheet 8 is designed to be tapered and inclined downward. After the slurry passes through the filter screen 61, it will be flushed on the surface of the rubber pressing sheet 8, and the starch on the surface will be flushed into the drainage cavity 22, and the connecting ring 9 can slide up and down between the disc 1 6 and the disc 2 7, and can repeatedly shake the rubber pressing sheet 8 to shake off the starch on the surface of the rubber pressing sheet 8, ensuring that no starch waste is caused. Therefore, through the arrangement of the present invention, while achieving efficient centrifugal filtration, starch waste can be reduced.

[0022] After filtering for a period of time, stop introducing the slurry, and then control the centrifugal tank 2 to flip, with the opening of disc 1 6 facing downward and the opening of disc 2 7 facing upward. The equipment can continue to filter, and during this filtering process, impurities on disc 1 6 can be automatically discharged, and under the blocking effect of rubber pressing sheet 8, the slurry will not leak.

[0023] It should be noted that the present invention can efficiently complete the filtration while quickly completing the impurity collection and starch separation through the coordinated setting of disc 1 6 and rubber pressing sheet 8. This causes impurities to easily accumulate in the middle of disc 1 6. Direct flushing cannot remove the impurities, and personnel are required to enter the interior to remove the impurities. Therefore, by flipping the setting and setting two sets of discs, alternating operation, impurities can be automatically discharged, which meets production needs.

[0024] Embodiment 2, based on the above embodiment, further includes that guide rods 91 are provided at the top and bottom of the connecting ring 9, guide holes are penetrated through the inside of the disc 1 6 and the disc 2 7, and the guide rods 91 are inserted into the guide holes.

[0025] Through this design, the connecting ring 9 can stably slide up and down between the disc 1 6 and the disc 2 7 , and the connecting ring 9 can rotate simultaneously with the disc 1 6 and the disc 2 7 .

[0026] Furthermore, a sliding key is provided on the outer side of the centrifugal shaft 4, a key slot is provided on the inner wall of the collar 5, the sliding key is slidably connected in the key slot, and a rubber sliding pad is provided on the inner wall of the key slot. This design can ensure the sealing between the collar 5 and the centrifugal shaft 4.

[0027] Embodiment 3, on the basis of the above embodiment, further includes, both ends of the centrifugal tank 2 are provided with guide tubes 23, the guide tubes 23 are connected with both ends of the filter cartridge 21, the inner diameter of the guide tube 23 is the same as the inner diameter of the filter cartridge 21, the top and bottom of the collar 5 are provided with connecting screw sleeves 51, the connecting assembly 3 includes a telescopic driving source 31 fixedly mounted on the outer end of the guide tube 23, the telescopic end of the telescopic driving source 31 is fixedly mounted with a sealing slide 32, the sealing slide 32 is sealed and plugged into the guide tube 23, and the sealing The sealing slide cylinder 32 is internally sealed and slidably connected with a connecting sleeve 33, which can be sealingly threadedly connected to the outside of the connecting ring 9. The sealing slide cylinder 32 is internally rotatably installed with a connecting sleeve 36. The connecting sleeve 36 is located on the outside of the sealing slide cylinder 32 and is provided with a friction surface at one end. The connecting sleeve 36 is sleeved on the outside of the centrifugal shaft 4. The connecting sleeve 36 can be threadedly connected to the connecting screw sleeve 51. The top of the sealing slide cylinder 32 is provided with a liquid inlet pipe 37 and an air pressure pipe 38, and the air pressure pipe 38 is connected to an external air source.

[0028] When the disc 6 is opened upward, the collar 5 is pressed on the connecting sleeve 36 in the lower connecting assembly 3 under the action of gravity, and the connecting screw sleeve 51 at the bottom of the collar 5 is pressed on the top of the connecting sleeve 36, and the telescopic driving source 131 drives the friction surface of the connecting sleeve 36 to press tightly against the inner bottom of the guide tube 23, and it cannot rotate under the action of friction. At this time, the connecting sleeve 33 is controlled to move upward, and the connecting sleeve 33 presses on the bottom of the connecting ring 9, and then the connecting sleeve 33 drives the connecting ring 9 to rise until the connecting ring 9 is pressed on the disc 6. At this time, the centrifugal shaft 4 is controlled to rotate, and the centrifugal shaft 4 drives the collar 5 to rotate The shaft collar 5 drives the connecting screw sleeve 51 to be threadedly connected to the connecting shaft sleeve 36, and the shaft collar 5 drives the connecting ring 9 to be threadedly connected to the connecting sleeve 33, completing the connection between the lower connecting assembly 3 and the shaft collar 5, and the telescopic driving source 1 31 drives the friction surface of the connecting shaft sleeve 36 away from the inner bottom of the guide tube 23, and the connecting shaft sleeve 36 can rotate, and the connecting shaft sleeve 36 can rotate with the shaft collar 5, and the sealing slide 32 does not rotate, and the connecting ring 9 drives the connecting sleeve 33 to rotate relative to the sealing slide 32. At this time, the space between the rubber pressing piece 8 and the sealing slide 32 is a sealed space, and the rubber pressing piece 8 is the top of the sealed space. Then, gas is injected into the sealed space through the air pressure pipe 38 to make a certain air pressure inside the sealed space, and the air pressure is sufficient to make the rubber pressing sheet 8 support the slurry. When the slurry is injected, the rubber pressing sheet 8 is located between the disc 1 6 and the disc 2 7. Therefore, during filtering, the telescopic driving source 1 31 is controlled to operate, and the telescopic driving source 1 31 drives the sealing slide 32 to move up and down. The sealing slide 32 drives the shaft ring 5 to move up and down through the connecting shaft sleeve 36. When the shaft ring 5 rises rapidly, under the action of the impact force of the slurry, the thrust given to the rubber pressing sheet 8 by the slurry is greater than the air pressure, and the rubber pressing sheet 8 will be pressed on the disc 2 7. At the top, the rubber pressing sheet 8 is stretched. When the collar 5 drops rapidly, the rubber pressing sheet 8 will recover under the action of air pressure, which can ensure that the surface of the rubber pressing sheet 8 will not be sticky with starch, and the starch can be better washed off without causing starch waste. At the same time, the filtering surface of the disc 2 7 faces downward and is located in the sealed space. Therefore, when the rubber pressing sheet 8 is squeezed and restored, airflow will repeatedly pass through the filter screen 61 on the disc 2 7, which can blow off the impurities on it, completing the efficient cleaning of the filter screen 61. After the filtration is completed, open the liquid inlet pipe 37 below, and the impurities dropped in the sealed space can be taken out together with the airflow, and the impurity removal efficiency is high.

[0029] After filtering for a period of time, the centrifugal shaft 4 is controlled to reverse, so that the connecting screw sleeve 51 is rotated away from the connecting shaft sleeve 36, and the connecting ring 9 is rotated away from the connecting sleeve 33, and then the centrifugal tank 2 is controlled to flip the axis, and the opening of the disc 2 7 faces upward. Similarly, the connecting component 3 corresponding to the disc 2 7 can be connected.

[0030] It should be noted that, during the up and down movement of the collar 5, the sealing slide 32 seals and blocks the filter cartridge 21 below the collar 5, ensuring that the filtered slurry can only be discharged through the drain pipe 24. Through the setting of the connecting component 3 in this embodiment, the drive of the collar 5 is set outside, and the lifting and lowering of the collar 5 does not affect its high-speed rotation.

[0031] Embodiment 4, on the basis of the above embodiment, further includes: a telescopic driving source 2 34 is fixedly installed on the top of the sealing slide 32, a top ring 35 is fixedly installed on the telescopic end of the telescopic driving source 2 34, the top ring 35 is located in the sealing slide 32, a magnetic ring 331 is provided on the top of the connecting sleeve 33, the connecting sleeve 33 can be adsorbed on the top ring 35 through the magnetic ring 331, a plurality of slots are provided in a ring shape at the bottom of the top ring 35, a plurality of plugs are provided in a ring shape at the top of the magnetic ring 331, and the plugs can be plugged into the slots.

[0032] During connection, it is necessary to prevent the connecting sleeve 33 from rotating. However, after the connection is completed, the connecting sleeve 33 must be able to rotate together with the shaft ring 5. Therefore, through the arrangement of this embodiment, during connection, the connecting sleeve 33 falls on the top ring 35 under the action of gravity, and the plug is inserted into the slot. Then the telescopic driving source 2 34 is controlled to operate, the telescopic driving source 2 34 drives the top ring 35 to rise, and the top ring 35 drives the connecting sleeve 33 to rise. The connecting sleeve 33 is pressed on the bottom of the connecting ring 9, and then the connecting sleeve 33 drives the connecting ring 9 to rise until the connecting ring 9 is pressed on the disc 1 6. At this time, the connecting sleeve 33 cannot rotate and can be threadedly connected to the connecting ring 9. After the connection is completed, the telescopic driving source 2 34 is controlled to operate, the telescopic driving source 2 34 drives the top ring 35 away from the connecting sleeve 33, and the connecting sleeve 33 can rotate together with the connecting ring 9. The control structure is simple.

[0033] It should be noted that the connecting sleeve 33 above the collar 5 is adsorbed on the top ring 35 under the action of the magnetic ring 331 and will not fall into the filter cartridge 21 during filtration, thereby ensuring stable filtration.

[0034] The telescopic driving source 1 31 and the telescopic driving source 2 34 can be selected as a cylinder or an electric telescopic rod according to customer needs.

[0035] In summary, by adopting the configurations of the third embodiment and the fourth embodiment, the simplest control structure can be used to realize the control and connection of the collar 5, and the structure is compact.

[0036] Embodiment 5, on the basis of the above embodiments, further includes that rubber sealing rings are provided on the outer sides of disc 1 6 and disc 2 7. Since when the connecting sleeve 33 is connected to the connecting ring 9, disc 1 6 or disc 2 7 with its opening facing downward needs to be inserted into the connecting sleeve 33, disc 1 6 and disc 2 7 need to have a certain distance from the inner wall of the filter cartridge 21, and this distance cannot pass impurities. Therefore, by setting the rubber sealing ring, the influence of the distance can be eliminated. During normal use, the rubber sealing ring prevents impurities from passing through disc 1 6 and disc 2 7 and the inner wall of the filter cartridge 21, and when disc 1 6 or disc 2 7 with its opening facing downward is inserted into the connecting sleeve 33, the rubber sealing ring is tightly squeezed, and the sealing between disc 1 6 and disc 2 7 and the inner wall of the connecting sleeve 33 can be improved.

[0037] Embodiment 6, based on the above embodiment, further includes that electric valves are provided inside the liquid inlet pipe 37 and the liquid discharge pipe 24 .

[0038] Furthermore, a driving motor is fixedly installed on the inner bottom of the bracket 1, and a driving pulley 11 and a driven pulley 12 are rotatably installed on the outer side of the bracket 1. The driving pulley 11 and the driven pulley 12 are connected by a transmission belt. Both the driving pulley 11 and the driven pulley 12 are double-groove pulleys. The driving pulley 11 is fixedly installed on the output end of the driving motor, and the driven pulley 12 is fixedly installed on the centrifugal tank 2.

[0039] By controlling the power supply of the driving motor, the driving motor drives the active pulley 11 to rotate, the active pulley 11 drives the driven pulley 12 to rotate, and the driven pulley 12 drives the centrifugal tank 2 to flip. It should be noted that the centrifugal tank 2 is repeatedly flipped forward and backward, which is easy to lay pipes.

[0040] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A disc centrifuge for separating starch slurry, comprising a support (1), characterized in that: A centrifugal tank (2) is rotatably mounted inside the bracket (1), a filter cartridge (21) is arranged inside the centrifugal tank (2), a drainage cavity (22) is arranged between the outer surface of the filter cartridge (21) and the inner wall of the centrifugal tank (2), and two groups of drainage pipes (24) are arranged outside the drainage cavity (22); A centrifugal shaft (4) is rotatably mounted inside the centrifugal tank (2), a shaft ring (5) is slidably connected to the outside of the centrifugal shaft (4), a disc 1 (6) and a disc 2 (7) are respectively arranged on the top and bottom of the shaft ring (5), the disc 1 (6) and the disc 2 (7) are symmetrically arranged about the shaft ring (5), a rubber pressing sheet (8) is fixedly connected to the outside of the shaft ring (5), a connecting ring (9) is arranged on the outside of the rubber pressing sheet (8), and the connecting ring (9) can slide up and down between the disc 1 (6) and the disc 2 (7), and a filter screen (61) is arranged inside each of the disc 1 (6) and the disc 2 (7); Both ends of the centrifugal tank (2) are provided with connecting components (3), and the connecting components (3) can be connected to the shaft ring (5) and can seal the filter cartridge (21).

2. A disc centrifuge for starch slurry separation according to claim 1, characterized in that: The disc one (6) and the disc two (7) are both designed in a trumpet shape, and the openings are far away from the shaft ring (5). The inner sides of the disc one (6) and the disc two (7) are both provided with blades (62), and the blades (62) are located between adjacent filter screens (61).

3. A disc centrifuge for starch slurry separation according to claim 2, characterized in that: The top and bottom of the connecting ring (9) are both provided with guide rods (91), and guide holes are provided through the insides of the disc one (6) and the disc two (7), and the guide rods (91) are inserted into the guide holes.

4. A disc centrifuge for starch slurry separation according to claim 3, characterized in that: The outer side of the centrifugal shaft (4) is provided with a sliding key, the inner wall of the shaft ring (5) is provided with a key slot, the sliding key is slidably connected in the key slot, and the inner wall of the key slot is provided with a rubber sliding pad.

5. A disc centrifuge for starch slurry separation according to claim 4, characterized in that: Both ends of the centrifugal tank (2) are provided with guide tubes (23), the guide tubes (23) are connected to both ends of the filter cartridge (21), the inner diameter of the guide tube (23) is the same as the inner diameter of the filter cartridge (21), the top and bottom of the collar (5) are provided with connecting screw sleeves (51), the connecting assembly (3) comprises a telescopic drive source (31) fixedly mounted on the outer end of the guide tube (23), the telescopic end of the telescopic drive source (31) is fixedly mounted with a sealing slide cylinder (32), the sealing slide cylinder (32) is sealingly inserted in the guide tube (23), the inner end of the sealing slide cylinder (32) is provided with a sealing sleeve (32) and the sealing sleeve (32) is sealed and inserted in the guide tube (23). The sealing sliding cylinder (32) is provided with a connecting sleeve (33) which can be sealingly threadedly connected to the outside of the connecting ring (9). A connecting shaft sleeve (36) is rotatably installed inside the sealing sliding cylinder (32). One end of the connecting shaft sleeve (36) located outside the sealing sliding cylinder (32) is provided with a friction surface. The connecting shaft sleeve (36) is sleeved on the outside of the centrifugal shaft (4). The connecting shaft sleeve (36) can be threadedly connected to the connecting screw sleeve (51). A liquid inlet pipe (37) and an air pressure pipe (38) are provided at the top end of the sealing sliding cylinder (32). The air pressure pipe (38) is connected to an external air source.

6. A disc centrifuge for starch slurry separation according to claim 5, characterized in that: A telescopic drive source 2 (34) is fixedly mounted on the top of the sealing slide (32), a top ring (35) is fixedly mounted on the telescopic end of the telescopic drive source 2 (34), the top ring (35) is located in the sealing slide (32), a magnetic ring (331) is arranged on the top of the connecting sleeve (33), the connecting sleeve (33) can be adsorbed on the top ring (35) through the magnetic ring (331), a plurality of slots are provided in a ring shape at the bottom of the top ring (35), a plurality of plugs are provided in a ring shape at the top of the magnetic ring (331), and the plugs can be plugged into the slots.

7. A disc centrifuge for starch slurry separation according to claim 6, characterized in that: The outer sides of the disc 1 (6) and the disc 2 (7) are both provided with rubber sealing rings.

8. A disc centrifuge for starch slurry separation according to claim 7, characterized in that: Electric valves are provided inside the liquid inlet pipe (37) and the liquid discharge pipe (24).

9. A disc centrifuge for starch slurry separation according to any one of claims 1 to 8, characterized in that: A driving motor is fixedly mounted on the inner bottom of the bracket (1), and a driving pulley (11) and a driven pulley (12) are rotatably mounted on the outer side of the bracket (1). The driving pulley (11) and the driven pulley (12) are connected via a transmission belt. Both the driving pulley (11) and the driven pulley (12) are double-groove pulleys. The driving pulley (11) is fixedly mounted on the output end of the driving motor, and the driven pulley (12) is fixedly mounted on the centrifugal tank (2).

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