A starch production extrusion dehydration device

Abstract

The present invention relates to the technical field of dehydration devices, and discloses a starch production extrusion dehydration device, comprising a base, a stand fixedly mounted on the top surface of the base, a hydraulic telescopic rod fixedly mounted on the bottom surface of the stand, a pressing plate arranged at the movable end of the hydraulic telescopic rod, a bearing cylinder slidably mounted on the top of the base and equipped with a drainage pipe, and a built-in filter cartridge arranged inside the bearing cylinder, wherein a first filter cloth is arranged inside the built-in filter cartridge, a first fixing assembly for fixing the first filter cloth is arranged on the top of the built-in filter cartridge, a second filter cloth is sleeved on the outer wall of the pressing plate, and a second fixing assembly for fixing the second filter cloth is arranged on the outer wall of the pressing plate. The starch production extrusion dehydration device ensures uniform pressure distribution during starch dehydration by effectively fixing the first filter cloth and the second filter cloth, thereby improving dehydration efficiency and starch quality.

Description

Technical Field

[0001] The invention relates to the technical field of dehydration devices, in particular to an extrusion dehydration device for starch production. Background Art

[0002] The production process of starch usually includes key links such as starch extraction, cleaning and dehydration. In the dehydration process, how to effectively remove the water in the starch directly affects the quality and production efficiency of the starch. At present, the hydraulic press is one of the commonly used equipment for starch dehydration. It squeezes the starch through the high-pressure pressure head and discharges the water through the pores of the filter cloth and the filter cartridge to achieve the purpose of solid-liquid separation.

[0003] In the starch dehydration operation, since starch particles are very small, when directly squeezed, water may carry these fine particles through the pores of the filter cartridge and cause starch loss, which in turn affects the yield and product quality. In addition, during the high-pressure extrusion process, water may also carry starch particles from around the pressure head, causing loss and possibly polluting the environment around the equipment. Therefore, the filter cloth not only needs to be placed inside the filter cartridge, but also must be covered on the starch to be dehydrated after loading is completed, so as to effectively intercept the fine starch particles, prevent loss, and ensure that the dehydrated starch maintains a sufficient solid content.

[0004] However, in the existing starch production extrusion dehydration device, the filter cloth is usually simply covered on the starch to be dehydrated. Due to the lack of fixing and sorting structure, the filter cloth is easily unevenly kneaded together, which leads to uneven distribution of pressure applied by the pressure head. The uneven pressure will directly affect the dehydration effect of the starch, causing the starch in some areas to be insufficiently dehydrated, while other areas are compacted due to excessive pressure, which not only reduces the production efficiency but also affects the final quality of the starch. Summary of the invention

[0005] In view of the fact that the filter cloth in the prior art is usually simply covered on the starch to be dehydrated, due to the lack of fixing and sorting structure, the filter cloth is easily unevenly kneaded together, which leads to uneven distribution of pressure applied by the pressure head. The uneven pressure will directly affect the dehydration effect of the starch. A starch production extrusion dehydration device is proposed.

[0006] The present application provides an extrusion dehydration device for starch production, the purpose of which is to ensure uniform pressure distribution during starch dehydration by effectively fixing a first filter cloth and a second filter cloth, thereby improving dehydration efficiency and starch quality.

[0007] The technical solution of the present invention is: a starch production extrusion dehydration device, comprising a base, a stand fixedly mounted on the top surface of the base, a hydraulic telescopic rod fixedly mounted on the bottom surface of the stand, a pressing plate arranged at the movable end of the hydraulic telescopic rod, a bearing cylinder slidably mounted on the top of the base and equipped with a drainage pipe, and a built-in filter cartridge arranged inside the bearing cylinder, a first filter cloth is arranged inside the built-in filter cartridge, a first fixing assembly for fixing the first filter cloth is arranged on the top of the built-in filter cartridge, a second filter cloth is sleeved on the outer wall of the pressing plate, and a second fixing assembly for fixing the second filter cloth is arranged on the outer wall of the pressing plate; the first fixing assembly comprises a mounting block arranged on the top surface of the built-in filter cartridge, a first mounting groove opened on the outer wall of the mounting block, a positioning block arranged inside the first mounting groove, a second mounting groove opened inside the mounting block and interconnected with the inside of the first mounting groove, and a first I-shaped piece arranged inside the second mounting groove, and the positioning block can be driven to rotate by controlling the lifting and lowering of the first I-shaped piece, and the positioning block clamps and fixes the first filter cloth inside the positioning block.

[0008] Furthermore, the first fixing assembly also includes a third mounting groove opened on the outer wall of the mounting block and interconnected with the interior of the second mounting groove, a control ring arranged inside the third mounting groove, and a clamping groove opened on the outer wall of the first I-shaped piece for the control ring to clamp.

[0009] Furthermore, the first fixing component also includes a trapezoidal member arranged on the inner wall of the frame for extruding the control ring, and a first elastic member arranged on the inner wall of the second mounting groove, and one end of the first elastic member away from the inner wall of the second mounting groove is fixedly connected to the bottom surface of the first I-shaped member, and the trapezoidal member is inclined at a side surface close to the control ring.

[0010] Furthermore, a plurality of positioning blocks are provided in the first fixing assembly, and a single control ring is provided, and the plurality of positioning blocks can be driven to rotate synchronously by controlling the lifting and lowering of a single control ring.

[0011] Furthermore, the positioning block includes a control portion, a rotating portion and a pressing portion, and the top of the control portion contacts the inner wall of the first I-shaped member.

[0012] Furthermore, the positioning block also includes a resistance increasing part and a buckling part. The outer wall of the mounting block is provided with a first groove for inserting the resistance increasing part. The outer wall of the mounting block is also provided with a second groove that cooperates with the buckling part.

[0013] Furthermore, the second fixing assembly includes a threaded column arranged on the outer wall of the pressing plate, a through hole opened on the outer wall of the second filter cloth for the threaded column to pass through, and a threaded sleeve arranged on the outer wall of the threaded column.

[0014] Furthermore, a slide groove is provided on the top surface of the pressure plate, and a second I-shaped piece is provided at the movable end of the hydraulic telescopic rod, and the bottom of the second I-shaped piece slides inside the slide groove, the outer wall of the bottom of the second I-shaped piece slides and fits with the inner wall of the slide groove, the outer wall of the second I-shaped piece is sleeved with a second elastic piece, and one end of the second elastic piece is fixedly connected to the outer wall of the second I-shaped piece, and the other end of the second elastic piece is fixedly connected to the inner wall of the slide groove.

[0015] Furthermore, the inner wall of the mounting block is provided with a rubber pad for increasing the friction between the second filter cloth and the mounting block.

[0016] Beneficial effects of the present invention:

[0017] 1. By laying the first filter cloth in the built-in filter cartridge, and laying the starch to be dehydrated on it, the pressing plate and the second filter cloth are used to squeeze at the same time, and multiple positioning blocks are used to fix the edge of the second filter cloth to ensure that the first filter cloth and the second filter cloth do not shift or wrinkle under high pressure, effectively ensuring the uniformity of the pressure on the starch, thereby avoiding the phenomenon of insufficient dehydration of some areas or excessive compression of the starch due to uneven pressure. Through this design, the device can significantly improve the dehydration efficiency of the starch, ensure a more uniform and sufficient dehydration effect, and greatly improve the production efficiency;

[0018] 2. The design of the first filter cloth and the second filter cloth effectively prevents the starch particles from being lost along with the water discharge. The first filter cloth is laid in the built-in filter cartridge, and the second filter cloth is sleeved outside the pressing plate to ensure that the starch will not leak from the built-in filter cartridge or the surrounding area of ​​the pressing plate when the pressure head is squeezed. This design can effectively reduce the loss of starch particles and avoid polluting the environment around the equipment. At the same time, it also greatly improves the starch collection rate, thereby improving the output and finished product quality.

[0019] 3. After dehydration is completed, when the hydraulic telescopic rod rises, it drives the pressure plate and the second filter cloth to vibrate, shaking off the starch adhering to the bottom of the second filter cloth, further improving the collection and utilization rate of the starch. In addition, the friction design between the rubber pad and the second filter cloth effectively enhances the cleaning effect and reduces the frequency of manual cleaning. The second filter cloth can be easily replaced or cleaned by unscrewing the threaded sleeve, which simplifies the maintenance process of the equipment and improves the convenience of operation and production continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereogram of the present invention.

[0021] Figure 2 It is a schematic diagram of the installation of the second filter cloth and the first filter cloth in the present invention.

[0022] Figure 3 It is a schematic diagram of the installation of the first fixing component in the present invention.

[0023] Figure 4 It is a three-dimensional diagram of the built-in filter cartridge in the present invention.

[0024] Figure 5 For the present invention Figure 4 Enlarged schematic diagram at point A in the middle.

[0025] Figure 6 It is a cross-sectional view of the mounting block in the present invention.

[0026] Figure 7 It is a three-dimensional diagram of the positioning block in the present invention.

[0027] Figure 8 It is a schematic diagram of the installation of the trapezoidal member in the present invention.

[0028] Fig. 9 It is a schematic diagram of the installation of the threaded column in the present invention.

[0029] Fig.10 It is a cross-sectional view of the pressure plate in the present invention.

[0030] In the figure:

[0031] 1. Base; 2. Stand; 3. Hydraulic telescopic rod; 4. Press plate; 5. Bearing cylinder; 6. Built-in filter cartridge; 7. Second filter cloth; 8. First filter cloth; 9. First fixing assembly; 10. Second fixing assembly; 11. Mounting block; 12. First mounting groove; 13. Positioning block; 14. Second mounting groove; 15. First I-shaped piece; 16. Third mounting groove; 17. Control ring; 18. Clamping groove; 19. First elastic piece; 20. Control part; 21. Rotating part; 22. Resistance increasing part; 23. Extrusion part; 24. Pressing part; 25. First groove; 26. Second groove; 27. Trapezoidal piece; 28. Threaded column; 29. ​​Threaded sleeve; 30. Second I-shaped piece; 31. Slide groove; 32. Second elastic piece; 33. Rubber pad. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] Example 1, reference Figure 1-Figure 9, which is the first embodiment of the present invention, provides a starch production extrusion dehydration device, including a base 1, a stand 2 fixedly mounted on the top surface of the base 1, a hydraulic telescopic rod 3 fixedly mounted on the bottom surface of the stand 2, a pressing plate 4 arranged at the movable end of the hydraulic telescopic rod 3, a bearing cylinder 5 slidably mounted on the top of the base 1 and equipped with a drainage pipe, a built-in filter cartridge 6 arranged inside the bearing cylinder 5, a first filter cloth 8 is arranged inside the built-in filter cartridge 6, a first fixing component 9 for fixing the first filter cloth 8 is arranged on the top of the built-in filter cartridge 6, a second filter cloth 7 is sleeved on the outer wall of the pressing plate 4, and a second fixing component 10 for fixing the second filter cloth 7 is arranged on the outer wall of the pressing plate 4;

[0034] The first fixing assembly 9 includes a mounting block 11 fixedly mounted on the top surface of the built-in filter cartridge 6, a first mounting groove 12 provided on the outer wall of the mounting block 11, a positioning block 13 rotatably mounted inside the first mounting groove 12, a second mounting groove 14 provided inside the mounting block 11 and interconnected with the inside of the first mounting groove 12, and a first I-shaped piece 15 slidably mounted inside the second mounting groove 14. The positioning block 13 can be driven to rotate by controlling the lifting and lowering of the first I-shaped piece 15, and the positioning block 13 clamps and fixes the first filter cloth 8 inside the positioning block 13.

[0035] Specifically, the supporting cylinder 5, the built-in filter cartridge 6, the pressure plate 4 and the hydraulic telescopic rod 3 are the common extrusion dehydration devices in the prior art. The built-in filter cartridge 6 is located at the center of the supporting cylinder 5. The built-in filter cartridge 6 can be detachably installed inside the supporting cylinder 5, or can be fixedly installed inside the supporting cylinder 5. The specific installation method can be determined according to actual use requirements, and no further details will be given here.

[0036] The first filter cloth 8 is evenly spread inside the built-in filter cartridge 6, and the starch to be dehydrated (such as sweet potato starch, etc.) is placed inside the first filter cloth 8. The edge portion of the first filter cloth 8 is clamped on the inner side of a plurality of positioning blocks 13, and then the supporting tube 5 is pushed to control the supporting tube 5 to move directly below the pressing plate 4. At the same time, the edge portion of the first filter cloth 8 can be fixed by the first fixing assembly 9. Since the second filter cloth 7 is sleeved on the outer wall of the pressing plate 4, the pressing plate 4 and the second filter cloth 7 can be driven to descend by controlling the movable end of the hydraulic telescopic rod 3 to descend, and the starch inside the first filter cloth 8 is squeezed and dehydrated. The liquid obtained after squeezing enters the bottom of the supporting tube 5 through the filter holes of the built-in filter cartridge 6, and finally flows out through the drainage pipe at the bottom of the supporting tube 5. After the dehydration is completed, the movable end of the hydraulic telescopic rod 3 is controlled to rise, so that the pressing plate 4 and the second filter cloth 7 are separated from the built-in filter cartridge 6, and the supporting tube 5 can be moved to the initial position, which is convenient for the staff to take out the dehydrated starch. The second filter cloth 7 can be disassembled, replaced or cleaned by the second fixing assembly 10.

[0037] By controlling the first I-shaped member 15 to descend, the positioning block 13 can be driven to rotate, and then the positioning block 13 can clamp and fix the second filter cloth 7 inside.

[0038] Reference Figure 4-Figure 6 The first fixing assembly 9 further includes a third mounting groove 16 formed on the outer wall of the mounting block 11 and communicating with the interior of the second mounting groove 14, a control ring 17 slidably mounted inside the third mounting groove 16, and a clamping groove 18 formed on the outer wall of the first I-shaped member 15 for clamping the control ring 17;

[0039] There are multiple positioning blocks 13 in the first fixing assembly 9 and one control ring 17 . By controlling the lifting and lowering of one control ring 17 , multiple positioning blocks 13 can be driven to rotate synchronously.

[0040] Specifically, a control ring 17 is simultaneously stuck in the slots 18 of multiple first I-shaped parts 15, and then by controlling the control ring 17 to descend, it can synchronously drive multiple positioning blocks 13 to rotate inward. Through the cooperation of multiple positioning blocks 13, the edge portion of the second filter cloth 7 can be effectively clamped and fixed.

[0041] Reference Figure 6-Figure 8 The first fixing assembly 9 also includes a trapezoidal member 27 fixedly mounted on the inner wall of the stand 2 for squeezing the control ring 17, and a first elastic member 19 fixedly mounted on the inner wall of the second mounting groove 14, and one end of the first elastic member 19 away from the inner wall of the second mounting groove 14 is fixedly connected to the bottom surface of the first I-shaped member 15, and the trapezoidal member 27 is inclinedly arranged on a side close to the control ring 17.

[0042] Specifically, the trapezoidal member 27 is an isosceles trapezoid, and the first elastic member 19 can be a common return spring or compression spring in the prior art, and is preferably a return spring.

[0043] When the supporting cylinder 5 moves to the position directly below the pressing plate 4, the inclined surface of the trapezoidal member 27 is squeezed with the control ring 17, thereby driving the control ring 17 to descend. At the same time, the first I-shaped member 15 squeezes the first elastic member 19, so that the first elastic member 19 stores elastic potential energy. Therefore, during the entire extrusion and dehydration process, the plurality of positioning blocks 13 clamp and fix the edge portion of the second filter cloth 7, effectively preventing the second filter cloth 7 from moving and wrinkling during the extrusion and dehydration process, thereby affecting the dehydration uniformity of the starch.

[0044] On the contrary, after dehydration is completed, when the supporting cylinder 5 moves to the initial position, under the action of the elastic force of the first elastic member 19, it can drive the multiple positioning blocks 13 and the control ring 17 back to the initial state, and the multiple positioning blocks 13 no longer clamp the edge portion of the second filter cloth 7, making it convenient for the staff to take out the second filter cloth 7 and the dehydrated starch.

[0045] Reference Figure 7 The positioning block 13 includes a control portion 20 , a rotating portion 21 and a pressing portion 23 , and the top of the control portion 20 contacts the inner wall of the first I-shaped member 15 .

[0046] Specifically, the control part 20 contacts the first I-shaped member 15 , and when the first I-shaped member 15 descends, it can press the positioning block 13 to rotate around the rotating part 21 until the squeezing part 23 contacts the second filter cloth 7 , thereby preventing the second filter cloth 7 from moving at will.

[0047] Reference Figure 7 The positioning block 13 also includes a resistance increasing portion 22 and a buckling portion 24 . The outer wall of the mounting block 11 is provided with a first groove 25 for inserting the resistance increasing portion 22 . The outer wall of the mounting block 11 is also provided with a second groove 26 that cooperates with the buckling portion 24 .

[0048] Specifically, through the cooperation between the resistance increasing portion 22 and the first groove 25, the vertical portion of the second filter cloth 7 can be folded to a certain extent when the edge portion of the second filter cloth 7 is fixed, thereby effectively improving the friction force when the edge portion of the second filter cloth 7 moves. Through the cooperation between the buckling portion 24 and the second groove 26, the horizontal portion of the edge portion of the second filter cloth 7 can be folded to a certain extent when the edge portion of the second filter cloth 7 is fixed, further effectively improving the friction force when the second filter cloth 7 moves, wherein the resistance increasing portion 22 and the buckling portion 24 are made of rubber.

[0049] Reference Fig. 9 The second fixing assembly 10 includes a threaded column 28 fixedly mounted on the outer wall of the pressing plate 4, a through hole opened on the outer wall of the second filter cloth 7 for the threaded column 28 to pass through, and a threaded sleeve 29 connected to the outer wall of the threaded column 28 through internal and external threads.

[0050] Specifically, after the second filter cloth 7 is sleeved on the pressing plate 4 and the plurality of threaded columns 28 , the second filter cloth 7 can be fixed by screwing the threaded sleeve 29 onto the threaded column 28 , so that the second filter cloth 7 can fit on the pressing plate 4 .

[0051] Example 2, reference Figure 1-Figure 10 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: a slide groove 31 is provided on the top surface of the pressing plate 4, a second I-shaped piece 30 is fixedly connected to the movable end of the hydraulic telescopic rod 3, and the bottom of the second I-shaped piece 30 slides inside the slide groove 31, the outer wall of the bottom of the second I-shaped piece 30 is slidably fitted with the inner wall of the slide groove 31, a second elastic piece 32 is sleeved on the outer wall of the second I-shaped piece 30, and one end of the second elastic piece 32 is fixedly connected to the outer wall of the second I-shaped piece 30, and the other end of the second elastic piece 32 is fixedly connected to the inner wall of the slide groove 31;

[0052] A rubber pad 33 for increasing the friction between the second filter cloth 7 and the mounting block 11 is fixedly connected to the inner wall of the mounting block 11 .

[0053] Specifically, the second elastic member 32 may be a compression spring or a return spring commonly used in the prior art, and is preferably a return spring.

[0054] After dehydration is completed, the movable end of the hydraulic telescopic rod 3 is controlled to contract, driving the second I-shaped piece 30 to move upward, and the second I-shaped piece 30 drives the pressing plate 4 and the second elastic piece 32 to rise until the second filter cloth 7 outside the pressing plate 4 contacts the rubber pad 33. Under the action of the friction between the second filter cloth 7 and the rubber pad 33, the bottom of the second I-shaped piece 30 first squeezes the second elastic piece 32, and then drives the pressing plate 4 and the second filter cloth 7 to rise, so that the pressing plate 4 and the second filter cloth 7 produce an up and down shaking effect to a certain extent, which is conducive to shaking off the starch stuck on the bottom surface of the second filter cloth 7 and improving the starch collection and utilization rate. The rest of the structure is the same as that of Example 1.

[0055] Based on Example 1-Example 2, the working principle of the present invention is as follows:

[0056] When it is necessary to dehydrate starch (such as sweet potato starch, etc.), first, the first filter cloth 8 is evenly spread inside the built-in filter cartridge 6, and then the starch to be dehydrated is flatly spread inside the first filter cloth 8, and the edge portion of the first filter cloth 8 is clamped on the inner side of multiple positioning blocks 13, and then the supporting cylinder 5 is pushed to control the supporting cylinder 5 to move to the bottom of the pressing plate 4. At the same time, the inclined surface of the trapezoidal member 27 is squeezed with the control ring 17, thereby driving the control ring 17 to descend, and multiple positioning blocks 13 clamp and fix the edge portion of the second filter cloth 7, and the second filter cloth 7 is sleeved on the outer wall of the pressing plate 4, and then by controlling the movable end of the hydraulic telescopic rod 3 to descend, the pressing plate 4 and the second filter cloth 7 can be driven to descend, and the starch inside the first filter cloth 8 is squeezed and dehydrated. The liquid obtained after squeezing enters the bottom of the supporting cylinder 5 through the filter holes of the built-in filter cartridge 6, and finally flows out through the drainage pipe at the bottom of the supporting cylinder 5.

[0057] After dehydration is completed, the movable end of the hydraulic telescopic rod 3 is controlled to rise, driving the second I-shaped member 30 to move upward, and the second I-shaped member 30 drives the pressing plate 4 and the second elastic member 32 to rise until the second filter cloth 7 outside the pressing plate 4 contacts the rubber pad 33. Under the action of the friction force between the second filter cloth 7 and the rubber pad 33, the bottom of the second I-shaped member 30 first squeezes the second elastic member 32, and then drives the pressing plate 4 and the second filter cloth 7 to rise, so that the pressing plate 4 and the second filter cloth 7 produce an up and down shaking effect to a certain extent, which is conducive to shaking off the starch stuck on the bottom surface of the second filter cloth 7 and improving the starch collection and utilization rate. Finally, the pressing plate 4 and the second filter cloth 7 are separated from the built-in filter cylinder 6, and the supporting cylinder 5 can be moved to the initial position, which is convenient for the staff to take out the dehydrated starch.

[0058] By unscrewing the plurality of threaded sleeves 29 , the second filter cloth 7 can be disassembled, replaced or cleaned.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A starch production extrusion dehydration device, comprising a base (1), a stand (2) fixedly mounted on the top surface of the base (1), a hydraulic telescopic rod (3) fixedly mounted on the bottom surface of the stand (2), a pressing plate (4) arranged at the movable end of the hydraulic telescopic rod (3), a bearing cylinder (5) slidably mounted on the top of the base (1) and equipped with a liquid discharge pipe, and a built-in filter cylinder (6) arranged inside the bearing cylinder (5), characterized in that: A first filter cloth (8) is arranged inside the built-in filter cartridge (6), a first fixing assembly (9) for fixing the first filter cloth (8) is arranged on the top of the built-in filter cartridge (6), a second filter cloth (7) is sleeved on the outer wall of the pressing plate (4), and a second fixing assembly (10) for fixing the second filter cloth (7) is arranged on the outer wall of the pressing plate (4); The first fixing assembly (9) comprises a mounting block (11) arranged on the top surface of the built-in filter cartridge (6), a first mounting groove (12) provided on the outer wall of the mounting block (11), a positioning block (13) provided inside the first mounting groove (12), a second mounting groove (14) provided inside the mounting block (11) and communicating with the inside of the first mounting groove (12), and a first I-shaped piece (15) provided inside the second mounting groove (14), wherein the positioning block (13) can be driven to rotate by controlling the lifting and lowering of the first I-shaped piece (15), and the positioning block (13) clamps and fixes the first filter cloth (8) inside the positioning block (13); The first fixing assembly (9) further comprises a third mounting groove (16) formed on the outer wall of the mounting block (11) and communicating with the interior of the second mounting groove (14), a control ring (17) disposed inside the third mounting groove (16), and a clamping groove (18) formed on the outer wall of the first I-shaped member (15) for clamping the control ring (17); The first fixing assembly (9) further comprises a trapezoidal member (27) arranged on the inner wall of the stand (2) for squeezing the control ring (17), and a first elastic member (19) arranged on the inner wall of the second mounting groove (14), wherein one end of the first elastic member (19) away from the inner wall of the second mounting groove (14) is fixedly connected to the bottom surface of the first I-shaped member (15), and a side surface of the trapezoidal member (27) close to the control ring (17) is inclinedly arranged; The positioning block (13) comprises a control portion (20), a rotating portion (21) and a pressing portion (23), and the top of the control portion (20) is in contact with the inner wall of the first I-shaped piece (15); The positioning block (13) further comprises a resistance increasing portion (22) and a buckling portion (24); the outer wall of the mounting block (11) is provided with a first groove (25) for inserting the resistance increasing portion (22); and the outer wall of the mounting block (11) is further provided with a second groove (26) that cooperates with the buckling portion (24).

2. The starch production extrusion dehydration device according to claim 1, characterized in that: A plurality of positioning blocks (13) are provided in the first fixing component (9), and a single control ring (17) is provided. By controlling the lifting and lowering of a single control ring (17), the plurality of positioning blocks (13) can be driven to rotate synchronously.

3. The starch production extrusion dehydration device according to claim 1, characterized in that: The second fixing assembly (10) comprises a threaded column (28) arranged on the outer wall of the pressing plate (4), a through hole formed on the outer wall of the second filter cloth (7) for the threaded column (28) to pass through, and a threaded sleeve (29) arranged on the outer wall of the threaded column (28).

4. The starch production extrusion dehydration device according to claim 1, characterized in that: A slide groove (31) is provided on the top surface of the pressing plate (4), a second I-shaped piece (30) is provided at the movable end of the hydraulic telescopic rod (3), and the bottom of the second I-shaped piece (30) slides inside the slide groove (31), the outer wall of the bottom of the second I-shaped piece (30) slides and fits with the inner wall of the slide groove (31), the outer wall of the second I-shaped piece (30) is sleeved with a second elastic piece (32), one end of the second elastic piece (32) is fixedly connected to the outer wall of the second I-shaped piece (30), and the other end of the second elastic piece (32) is fixedly connected to the inner wall of the slide groove (31).

5. The starch production extrusion dehydration device according to claim 4, characterized in that: The inner wall of the mounting block (11) is provided with a rubber pad (33) for increasing the friction between the second filter cloth (7) and the mounting block (11).

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