A disc centrifuge for starch slurry separation

Abstract

The present invention discloses a disc centrifuge for starch slurry separation, which relates to the technical field of starch slurry filtration. The present invention includes a bracket, inside which a centrifugal tank is rotatably installed. Inside the centrifugal tank, a centrifugal shaft is rotatably installed. An axle collar is slidably connected to the outer side of the centrifugal shaft. A first disc and a second disc are respectively arranged at the top and bottom of the axle collar. The first disc and the second disc are symmetrically arranged with respect to the axle collar. A rubber pressing piece is fixedly connected to the outer side of the axle collar, and a connecting ring is arranged on the outer side of the rubber pressing piece. Filter meshes are arranged inside both the first disc and the second disc. Connecting components are arranged at both ends of the centrifugal tank. Through the arrangement of the first disc, the second disc and the rubber pressing piece, the starch adhered to the rubber pressing piece is shaken off. The shaken-off starch enters the liquid discharge cavity and is discharged through the liquid discharge pipe. Therefore, the impurity filtration of the starch slurry can be efficiently completed without causing starch waste.

Description

Technical Field

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

[0002] As an important natural polymer material, starch is widely used in industries such as food, textile, papermaking, and pharmaceuticals. During the starch production process, raw materials such as corn, potato, or wheat are soaked, ground, and slurried 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, which includes a box body. An inlet is provided on the top surface of the box body. Two inclined filter mesh plates are hinged inside the box body. The two filter mesh plates are distributed up and down, and the two filter mesh plates have different filtration grades. This patent mainly uses the method of gravity filtration to allow the slurry to flow through the filter mesh naturally. Since the starch slurry has a high concentration and high viscosity, the conventional filtration processing speed is slow. Centrifugal filtration can improve the filtration efficiency of the starch slurry. In a Chinese patent (publication number: CN207786092U), a slurry centrifugal filter is disclosed, aiming to filter the slurry through a designed centrifugal filter from a certain mesh screen during the high-speed rotation of the device, without forming a crust on the slurry during the filtration process, and having a relatively high filtration efficiency and being easy to clean. Although it can be applied to the filtration of starch slurry and can improve the filtration efficiency to a certain extent, due to the high density of starch particles, they will precipitate to the bottom under the action of centrifugal force, and the precipitated starch has a high viscosity and is easy to adhere 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, the present invention provides a disc centrifuge for starch slurry separation.

[0005] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0006] A disc centrifuge for starch slurry separation includes a support. A centrifugal tank is rotatably installed inside the support. A filter cylinder is arranged inside the centrifugal tank. A drainage chamber is arranged between the outer surface of the filter cylinder and the inner wall of the centrifugal tank. Two groups of drainage pipes are arranged outside the drainage chamber;

[0007] A centrifugal shaft is rotatably installed inside the centrifugal tank. A collar is slidably connected to the outer side of the centrifugal shaft. A first disc and a second disc are respectively arranged at the top and bottom of the collar. The first disc and the second disc are symmetrically arranged with respect to the collar. A rubber pressing piece is fixedly connected to the outer side of the collar. A connecting ring is arranged on the outer side of the rubber pressing piece. The connecting ring can slide up and down between the first disc and the second disc. Filter meshes are arranged inside both the first disc and the second disc.

[0008] Connecting components are arranged at both ends of the centrifugal tank. The connecting components can be connected to the collar and can block the filter cylinder.

[0009] Further, both the first disc and the second disc are designed in a horn shape, and the openings face away from the collar. Blades are arranged on the inner sides of both the first disc and the second disc. The blades are located between adjacent filter meshes.

[0010] Further, guide rods are arranged at both the top and bottom of the connecting ring. Guide holes are respectively penetrated and opened inside both the first disc and the second disc. The guide rods are inserted into the guide holes.

[0011] Further, a sliding key is arranged on the outer side of the centrifugal shaft. A key groove is opened on the inner wall of the collar. The sliding key is slidably connected in the key groove, and a rubber sliding pad is arranged on the inner wall of the key groove.

[0012] Further, guide pipes are arranged at both ends of the centrifugal tank. The guide pipes are communicated with both ends of the filter cylinder. The inner diameter of the guide pipes is the same as that of the filter cylinder. Connecting screw sleeves are arranged at both the top and bottom of the collar. The connecting component includes a first telescopic driving source fixedly installed at the outer end of the guide pipe. A sealing sliding cylinder is fixedly installed at the telescopic end of the first telescopic driving source. The sealing sliding cylinder is hermetically inserted into the guide pipe. A connecting sleeve is hermetically slidably connected inside the sealing sliding cylinder. The connecting sleeve can be hermetically threadedly connected to the outer side of the connecting ring. A connecting shaft sleeve is rotatably installed inside the sealing sliding cylinder. A friction surface is arranged at one end of the connecting shaft sleeve located outside the sealing sliding cylinder. The connecting shaft sleeve is sleeved on the outer side of the centrifugal shaft. The connecting shaft sleeve can be threadedly connected in the connecting screw sleeve. A liquid inlet pipe and a pneumatic pipe are arranged at the top end of the sealing sliding cylinder. The pneumatic pipe is communicated with an external gas source.

[0013] Further, a second telescopic driving source is fixedly installed at the top of the sealing sliding cylinder. A top ring is fixedly installed at the telescopic end of the second telescopic driving source. The top ring is located inside the sealing sliding cylinder. A magnetic ring is arranged at the top of the connecting sleeve. The connecting sleeve can be adsorbed on the top ring through the magnetic ring. A plurality of groups of slots are annularly opened at the bottom of the top ring. A plurality of groups of plugs are annularly arranged at the top of the magnetic ring. The plugs can be inserted into the slots.

[0014] Further, rubber sealing rings are arranged on the outer sides of both the first disc and the second disc.

[0015] Furthermore, electric valves are provided inside both the liquid inlet pipe and the liquid discharge pipe.

[0016] Furthermore, a driving motor is fixedly installed at the inner bottom of the bracket, and a driving pulley and a driven pulley are rotatably installed on the outside 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.

[0017] The beneficial effects of the present invention are as follows:

[0018] In the present invention, through the settings of the first disc, the second disc and the rubber pressing sheet, the first disc drives the starch slurry to rotate, so that the slurry passes through the filter cylinder under the action of centrifugal force. At the same time, the shaft collar drives the first disc and the second disc to move up and down. When moving up, the precipitated starch is washed by the slurry and falls on the rubber pressing sheet through the filter screen on the first disc, completing the separation of the precipitated starch and impurities. Then, the connecting ring is controlled to move up and down relative to the shaft collar to shake off the starch adhered to the rubber pressing sheet. The shaken-off starch enters the liquid discharge cavity and is discharged through the liquid discharge pipe. Therefore, the impurity filtration of the starch slurry can be efficiently completed without causing starch waste.

[0019] In the present invention, by turning the centrifugal tank, the second disc faces upward. The second disc participates in centrifugal drive and starch filtration, and the filtration surface of the first disc faces downward, so that the impurities filtered last time can be discharged. The equipment does not need to stop for cleaning, and the production efficiency is high. Description of the Drawings

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the structural schematic diagram of the centrifugal tank of the present invention;

[0022] Figure 3 is the internal structural schematic diagram of the centrifugal tank of the present invention;

[0023] Figure 4 is the explosion diagram of the centrifugal tank of the present invention;

[0024] Figure 5 is the sectional structural schematic diagram of the centrifugal tank of the present invention;

[0025] Figure 6 is the sectional structural schematic diagram of the first disc and the second disc of the present invention;

[0026] Figure 7 is the structural schematic diagram of the connecting component of the present invention.

[0027] Reference numerals: 1, bracket; 11, driving pulley; 12, driven pulley; 2, centrifugal tank; 21, filter cartridge; 22, liquid discharge chamber; 23, guide pipe; 24, liquid discharge pipe; 3, connecting assembly; 31, first telescopic driving source; 32, sealed sliding cylinder; 33, connecting sleeve; 331, magnetic ring; 34, second telescopic driving source; 35, top ring; 36, connecting shaft sleeve; 37, liquid inlet pipe; 38, air pressure pipe; 4, centrifugal shaft; 5, shaft collar; 51, connecting screw sleeve; 6, first disc; 61, filter screen; 62, blade; 7, second disc; 8, rubber pressing piece; 9, connecting ring; 91, guide rod. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] Example 1, as Figures 1-7 shown, a disc centrifuge for starch slurry separation includes a bracket 1. A centrifugal tank 2 is rotatably installed inside the bracket 1. A filter cartridge 21 is arranged inside the centrifugal tank 2. A liquid discharge chamber 22 is arranged between the outer surface of the filter cartridge 21 and the inner wall of the centrifugal tank 2. Two groups of liquid discharge pipes 24 are arranged outside the liquid discharge chamber 22;

[0030] A centrifugal shaft 4 is rotatably installed inside the centrifugal tank 2. A shaft collar 5 is slidably connected to the outside of the centrifugal shaft 4. A first disc 6 and a second disc 7 are respectively arranged at the top and bottom of the shaft collar 5. The first disc 6 and the second disc 7 are symmetrically arranged with respect to the shaft collar 5. A rubber pressing piece 8 is fixedly connected to the outside of the shaft collar 5. A connecting ring 9 is arranged outside the rubber pressing piece 8. The connecting ring 9 can slide up and down between the first disc 6 and the second disc 7. Filter screens 61 are arranged inside both the first disc 6 and the second disc 7;

[0031] Connecting assemblies 3 are arranged at both ends of the centrifugal tank 2. The connecting assemblies 3 can be connected to the shaft collar 5 and can block the filter cartridge 21.

[0032] Further, both the first disc 6 and the second disc 7 are designed in a trumpet shape, and the openings are away from the shaft collar 5. Blades 62 are arranged inside both the first disc 6 and the second disc 7. The blades 62 are located between adjacent filter screens 61.

[0033] During filtration, the first disc 6 is used at this time. The lower connecting component 3 is connected to the bottom end of the collar 5. The starch slurry is injected into the centrifugal tank 2. Then, the rotation of the centrifugal shaft 4 is controlled. The centrifugal shaft 4 drives the collar 5 to rotate, and the collar 5 drives the first disc 6 and the second disc 7 to rotate. The first disc 6 drives the slurry to rotate, and the slurry generates centrifugal force, is thrown out of the filter cylinder 21, and enters the drain cavity 22, and then is discharged through the drain pipe 24. The impurities are filtered inside the filter cylinder 21 and fall on the first disc 6 under the action of gravity. Since both the first disc 6 and the second disc 7 are designed in a trumpet shape, the impurities will concentrate towards the inside of the first disc 6. However, during 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 collar 5 to slide up and down along the centrifugal shaft 4. The collar 5 drives the first disc 6 to stir the slurry, reducing starch precipitation. The collar 5 drives the connecting component 3 to rise and fall. The connecting component 3 can block a part of the filter cylinder 21 below the second disc 7 to ensure that the slurry will not leak. And when the collar 5 slides upward, the slurry will wash the impurities, washing down the precipitated starch among them. The precipitated starch falls on the top of the rubber pressing piece 8 through the filter screen 61. Therefore, the impurities and the precipitated starch can be separated. At the same time, the rubber pressing piece 8 is closely attached to the upper surface of the second disc 7. The rubber pressing piece 8 is designed in a conical shape slanting downward. After the slurry passes through the filter screen 61, it will wash on the surface of the rubber pressing piece 8, washing the starch on its surface into the drain cavity 22. And the connecting ring 9 can slide up and down between the first disc 6 and the second disc 7, and can repeatedly shake the rubber pressing piece 8, shaking off the starch on the surface of the rubber pressing piece 8 to ensure that no starch is wasted. Therefore, through the setting of the present invention, while high-efficiency centrifugal filtration can be achieved, starch waste can be reduced.

[0034] After filtering for a period of time, the feeding of the slurry is stopped, and then the centrifugal tank 2 is controlled to flip. The opening of the first disc 6 faces downward, and the opening of the second disc 7 faces upward. The equipment can continue to filter, and during this filtration process, the impurities on the first disc 6 can be automatically discharged, and under the blocking action of the rubber pressing piece 8, the slurry will not leak.

[0035] It should be noted that through the cooperative setting of the first disc 6 and the rubber pressing piece 8 of the present invention, while the filtration can be efficiently completed, the impurity collection and starch separation can be quickly completed. This leads to the accumulation of impurities in the middle of the first disc 6. The impurities cannot be removed by direct flushing, and personnel still need to enter the interior to remove the impurities. Therefore, through the flipping setting and the setting of two groups of discs, alternating operation and automatic impurity discharge meet the production requirements.

[0036] Embodiment 2, on the basis of the above embodiment, further includes that guide rods 91 are provided at both the top and the bottom of the connecting ring 9, and guide holes are respectively formed through the interiors of the first disc 6 and the second disc 7, and the guide rods 91 are inserted into the guide holes.

[0037] With this design, the connecting ring 9 can slide up and down stably between the first disc 6 and the second disc 7, and the connecting ring 9 can rotate simultaneously with the first disc 6 and the second disc 7.

[0038] Furthermore, a sliding key is arranged on the outer side of the centrifugal shaft 4, a key groove is formed in the inner wall of the shaft collar 5, the sliding key is slidably connected in the key groove, and a rubber sliding pad is arranged on the inner wall of the key groove. With this design, the sealing performance between the shaft collar 5 and the centrifugal shaft 4 can be ensured.

[0039] Embodiment 3, on the basis of the above embodiment, further includes that guide pipes 23 are arranged at both ends of the centrifugal tank 2, the guide pipes 23 are communicated with both ends of the filter cartridge 21, the inner diameter of the guide pipes 23 is the same as that of the filter cartridge 21, connecting screw sleeves 51 are arranged at the top and bottom of the shaft collar 5, the connecting assembly 3 includes a telescopic driving source 1 31 fixedly installed at the outer end of the guide pipe 23, a sealing sliding cylinder 32 is fixedly installed at the telescopic end of the telescopic driving source 1 31, the sealing sliding cylinder 32 is hermetically inserted into the guide pipe 23, a connecting sleeve 33 is hermetically and slidably connected inside the sealing sliding cylinder 32, the connecting sleeve 33 can be hermetically threadedly connected to the outside of the connecting ring 9, a connecting shaft sleeve 36 is rotatably installed inside the sealing sliding cylinder 32, a friction surface is arranged at one end of the connecting shaft sleeve 36 located outside the sealing sliding cylinder 32, the connecting shaft sleeve 36 is sleeved on the outside of the centrifugal shaft 4, the connecting shaft sleeve 36 can be threadedly connected into the connecting screw sleeve 51, a liquid inlet pipe 37 and a pneumatic pipe 38 are arranged at the top end of the sealing sliding cylinder 32, and the pneumatic pipe 38 is communicated with an external gas source.

[0040] When the first disc 6 has its opening facing upwards, the collar 5 presses on the connecting bushing 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 sleevedly presses on the top of the connecting bushing 36. The telescopic driving source 31 drives the friction surface of the connecting bushing 36 to tightly press against the inner bottom of the guiding tube 23 and cannot rotate under the action of friction. At this time, control the connecting sleeve 33 to move upwards. 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 against the first disc 6. At this time, control the centrifugal shaft 4 to rotate. The centrifugal shaft 4 drives the collar 5 to rotate. The collar 5 drives the connecting screw sleeve 51 to be threadedly connected to the connecting bushing 36. At the same time, the 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 collar 5. The telescopic driving source 31 drives the friction surface of the connecting bushing 36 to move away from the inner bottom of the guiding tube 23. The connecting bushing 36 can rotate and can follow the rotation of the collar 5. The sealing sliding cylinder 32 does not rotate, and the connecting ring 9 drives the connecting sleeve 33 to rotate relative to the sealing sliding cylinder 32. At this time, the space between the rubber pressing piece 8 and the sealing sliding cylinder 32 is a sealed space. The rubber pressing piece 8 is the top of this sealed space. Then, inject gas into the sealed space through the air pressure pipe 38 so that there is a certain air pressure inside the sealed space, and this air pressure is sufficient to enable the rubber pressing piece 8 to support the slurry. When injecting the slurry, the rubber pressing piece 8 is located between the first disc 6 and the second disc 7. Therefore, during filtration, control the telescopic driving source 31 to operate. The telescopic driving source 31 drives the sealing sliding cylinder 32 to move up and down. The sealing sliding cylinder 32 drives the collar 5 to move up and down through the connecting bushing 36. When the collar 5 rises rapidly, under the action of the impact force of the slurry, the thrust given by the slurry to the rubber pressing piece 8 is greater than the air pressure, and the rubber pressing piece 8 will be pressed against the top of the second disc 7 and the rubber pressing piece 8 is stretched. When the collar 5 descends rapidly, the rubber pressing piece 8 will recover under the action of air pressure, which can ensure that the surface of the rubber pressing piece 8 will not stick to starch, and the starch can be better washed down without causing starch waste. At the same time, the filtering surface of the second disc 7 faces downwards and is located in the sealed space. Therefore, when the rubber pressing piece 8 is squeezed and recovered, air flow will repeatedly pass through the filter screen 61 on the second disc 7, and the impurities on it can be blown off, completing the efficient cleaning of the filter screen 61. After filtration is completed, open the lower liquid inlet pipe 37, and the impurities falling in the sealed space can be carried out by the air flow together, with high impurity discharge efficiency.

[0041] After filtering for a period of time, control the centrifugal shaft 4 to reverse, so that the connecting screw sleeve 51 rotates away from the connecting bushing 36 and the connecting ring 9 rotates away from the connecting sleeve 33. Then control the centrifugal tank 2 to turn its axis, and the second disc 7 has its opening facing upwards. Similarly, connect it to the connecting assembly 3 corresponding to the second disc 7.

[0042] It should be noted that during the up and down movement of the shaft collar 5, the sealing slide cylinder 32 seals and plugs the filter cartridge 21 below the shaft collar 5, ensuring that the filtered slurry can only be discharged through the drain pipe 24. Through the setting of the connection component 3 in this embodiment, the drive of the shaft collar 5 is arranged outside, and the lifting of the shaft collar 5 does not affect its high-speed rotation.

[0043] Embodiment 4, on the basis of the above embodiment, further includes that a telescopic drive source two 34 is fixedly installed at the top of the sealing slide cylinder 32, a top ring 35 is fixedly installed at the telescopic end of the telescopic drive source two 34, the top ring 35 is located in the sealing slide cylinder 32, a magnetic ring 331 is arranged at 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 groups of slots are annularly formed at the bottom of the top ring 35, and a plurality of groups of plugs are annularly arranged at the top of the magnetic ring 331, and the plugs can be inserted into the slots.

[0044] During connection, it is necessary to make the connecting sleeve 33 not rotate, but after the connection is completed, the connecting sleeve 33 has to be able to rotate together with the shaft collar 5. Therefore, through the setting of this embodiment, during connection, the connecting sleeve 33 falls on the top ring 35 under the action of gravity, and the plugs are inserted into the slots, and then the telescopic drive source two 34 is controlled to operate. The telescopic drive source two 34 drives the top ring 35 to rise, the top ring 35 drives the connecting sleeve 33 to rise, the connecting sleeve 33 presses against 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 against the first disc 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 drive source two 34 is controlled to operate, and the telescopic drive source two 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, and the control structure is simple.

[0045] It should be noted that the connecting sleeve 33 above the shaft 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, ensuring stable filtration.

[0046] The telescopic drive source one 31 and the telescopic drive source two 34 can select a cylinder or an electric telescopic rod according to customer needs.

[0047] In summary, by adopting the settings of Embodiment 3 and Embodiment 4, with the simplest control structure, the control and connection of the shaft collar 5 can be realized, and the structure is compact.

[0048] Embodiment 5. On the basis of the above embodiments, it further includes that rubber sealing rings are arranged on the outer sides of the first disc 6 and the second disc 7. Since when the connecting sleeve 33 is connected to the connecting ring 9, the first disc 6 or the second disc 7 with the opening facing downward needs to be inserted into the inside of the connecting sleeve 33, there needs to be a certain distance between the first disc 6 and the second disc 7 and the inner wall of the filter cartridge 21, and impurities cannot pass through this distance. Therefore, through the setting of the rubber sealing rings, the influence caused by this distance can be eliminated. During normal use, the rubber sealing rings prevent impurities from passing between the first disc 6 and the second disc 7 and the inner wall of the filter cartridge 21. When the first disc 6 or the second disc 7 with the opening facing downward is inserted into the inside of the connecting sleeve 33, the rubber sealing rings are tightly squeezed, and the sealing performance between the first disc 6 and the second disc 7 and the inner wall of the connecting sleeve 33 can also be improved.

[0049] Embodiment 6. On the basis of the above embodiments, it further includes that electric valves are arranged inside the liquid inlet pipe 37 and the liquid discharge pipe 24.

[0050] Furthermore, a driving motor is fixedly installed at the inner bottom of the bracket 1, 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.

[0051] By controlling the driving motor to be powered on, the driving motor drives the driving pulley 11 to rotate, the driving pulley 11 drives the driven pulley 12 to rotate, and the driven pulley 12 drives the centrifugal tank 2 to turn over. It should be noted that the centrifugal tank 2 turns over repeatedly in both positive and negative directions, which is easy for pipeline layout.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can 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 will be accorded 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 filter screens (61) are arranged inside the disc 1 (6) and the disc 2 (7), and connecting components (3) are arranged at both ends of the centrifugal tank (2), and the connecting components (3) can be connected to the shaft ring (5) and can seal the filter cartridge (21); 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.

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: 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.

6. A disc centrifuge for starch slurry separation according to claim 5, characterized in that: The outer sides of the disc 1 (6) and the disc 2 (7) are both provided with rubber sealing rings.

7. A disc centrifuge for starch slurry separation according to claim 6, characterized in that: Electric valves are provided inside the liquid inlet pipe (37) and the liquid discharge pipe (24).

8. A disc centrifuge for starch slurry separation according to any one of claims 1 to 7, 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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