Device for continuous separation of protein and dietary fiber in soybean starch wastewater

Abstract

This invention relates to the field of wastewater treatment technology and discloses a continuous separation device for protein and dietary fiber in soybean starch wastewater. The device includes a support mounted on the ground at the front and rear, and a horizontal screw centrifuge. A treatment tank with a narrow neck at the bottom is mounted on the top of the support. Toothed tubes and toothed filter drums rotating in the same direction at different speeds are rotatably connected to the upper and lower sides of the inner wall of the treatment tank. Spiral blades are fixedly connected to the outer wall of the bottom of the toothed tubes, sliding against the inner and lower walls of the toothed filter drums. An inlet pipe communicating with the inner cavity of the toothed tubes is fixedly inserted into the upper wall of the treatment tank. This invention filters out coarse fibers and coarse residues from the wastewater before flocculation, and then uses a flocculant supply component to introduce flocculant into the wastewater, thus avoiding flocculant waste and generating effective flocs. The staggered rotation of the first, second, and third spiral tubes enhances the flocculation effect, ensuring efficient and continuous separation of protein and fiber from the wastewater.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a device for the continuous separation of protein and dietary fiber in soybean starch wastewater. Background Technology

[0002] Wastewater treatment technology is a series of processes and methods aimed at reducing or removing pollutants from water to bring it up to environmental or reuse standards. Legume starch wastewater is typically a byproduct or waste generated during legume starch processing. Generally, a separator is the preferred method for treating this type of wastewater, separating the starch precipitate from the water, and then recycling the separated waste.

[0003] Utility model patent with publication number CN222082552U discloses a high-efficiency separator for treating starch wastewater, including a support drain pipe. A treatment tank drain pipe is fixedly connected to the top of the support drain pipe. A support block drain pipe is fixedly connected to the top of the treatment tank drain pipe. A motor drain pipe is fixedly connected to the front end of the support block drain pipe. An inlet drain pipe is fixedly connected to the right side of the top of the treatment tank drain pipe. A main shaft is fixedly connected to the drive end of the motor drain pipe. A stirring plate drain pipe is fixedly connected to all four sides of the main shaft. A grooved drain pipe is provided inside the stirring plate drain pipe.

[0004] The high-efficiency separator for starch wastewater treatment in the aforementioned patent can only process wastewater in batches, and each batch of wastewater requires multiple cycles of filtration. The wastewater treatment rate is slow, making it unsuitable for continuous treatment of large volumes of wastewater. Furthermore, it lacks pre-removal of coarse fibers and sludge from the wastewater. Adding flocculants directly to wastewater containing coarse fibers and sludge results in the flocculants being largely adsorbed and consumed by the fibers and sludge, leading to waste and soaring consumption. After adding the flocculants and stirring, the coarse fibers, sludge, protein, and fine fibers clump together, making subsequent separation and sorting difficult, thus rendering the materials unrecoverable. Cleaning the filtration mechanism requires stopping the machine for disassembly and reassembly, which is cumbersome. Summary of the Invention

[0005] The purpose of this invention is to address the problems of conventional high-efficiency separators for starch wastewater treatment, such as difficulty in continuously and rapidly treating wastewater, difficulty in separating flocculated wastewater, and inconvenience in cleaning the filtration mechanism. This invention provides a continuous separation device for protein and dietary fiber in soybean starch wastewater.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: A continuous separation device for protein and dietary fiber in soybean starch wastewater includes a support and a horizontal screw centrifuge installed on the ground at the front and back. A treatment tank with a narrow neck is installed on the top of the support. Toothed tubes and toothed filter drums rotating in the same direction at different speeds are rotatably connected to the upper and lower sides of the inner wall of the treatment tank. Spiral blades are fixedly connected to the outer wall of the bottom of the toothed tubes and slide against the inner wall and lower wall of the toothed filter drums. A water inlet pipe communicating with the inner cavity of the toothed tubes is fixedly inserted into the upper wall of the treatment tank. A drug supply component for delivering chemicals to the bottom of the treatment tank is set in the middle of the treatment tank. A dirt removal cavity is formed between the toothed tubes and the upper end of the toothed filter drums. A vibrating ring that slides and engages with the inner wall of the treatment tank is set around the dirt removal cavity. A dirt discharge pipe is fixedly connected to the front end of the vibrating ring. A cleaning component is set around the toothed filter drums. The bottom of the treatment tank is fixedly connected with three spiral tubes in alternating directions: spiral tube one, spiral tube two, and spiral tube three. A water pump is installed between the bottom of spiral tube three and the horizontal screw centrifuge.

[0007] Furthermore, the toothed tube is located inside the toothed filter drum, with the bottom of the toothed tube away from the lower wall of the toothed filter drum. A rotating shaft is rotatably connected between the top of the support and the right wall of the treatment tank. The rotating shaft is driven by a motor installed on the top of the treatment tank. Gear 1, which meshes with the toothed tube, and gear 2, which meshes with the toothed filter drum, are fixedly connected to the upper and lower sides of the rotating shaft, respectively. The diameter of gear 2 is smaller than that of gear 1.

[0008] Furthermore, the drug supply assembly includes a drug tank installed on the top of the treatment tank. A cross valve stem is rotatably connected between the drug tank and the middle of the treatment tank. The cross valve stem is driven by a motor installed on the top of the drug tank. The cross valve stem is rotatably and sealingly connected to the lower wall of the toothed filter drum. The bottom end of the cross valve stem extends into the narrow neck of the inner cavity of the treatment tank. An agitator is installed at the bottom end of the cross valve stem. The cross valve stem has an I-shaped valve channel located above the agitator.

[0009] Furthermore, the inner wall of the vibration ring is provided with a guide groove, and pins that slide and engage with the guide groove are fixedly inserted on the left and right sides of the top of the toothed filter drum. The guide groove is composed of the annular grooves on the left and right sides and the curved grooves on the front and rear sides. A sealing element that slides and abuts against the vibration ring is provided on the top of the outer periphery of the toothed filter drum.

[0010] Furthermore, the cleaning assembly includes a rotating ring that is rotatably sealed to the inner wall of the treatment tank. The top of the outer periphery of the rotating ring is recessed to form an annular air chamber. Air guide frames corresponding to the toothed filter drum are fixedly connected to the left and right walls of the inner cavity of the rotating ring. An air inlet pipe extending into the annular air chamber is fixedly inserted into the left wall of the treatment tank. An air pressurization mechanism is connected to the outside of the air inlet pipe. The lower wall of the annular air chamber has a through hole communicating with the air guide frame.

[0011] Furthermore, there is a gap between the air guide frame and the outer wall of the toothed filter drum, the bottom of the air guide frames on both sides are fixedly connected to the cross valve stem, and an exhaust hole is provided on the upper wall of the treatment tank.

[0012] Furthermore, the first spiral tube is conical and has a pitch greater than that of the second and third spiral tubes. The pitches of the second and third spiral tubes gradually decrease. The first spiral tube and the second spiral tube, as well as the second and the third spiral tube, are connected and transitioned by an arc tube.

[0013] Furthermore, the water pump is installed at the bottom of the support, and both the second and third spiral tubes are fixedly connected in the support.

[0014] Furthermore, the right wall of the treatment tank is provided with a movable groove 1 corresponding to gear 1 and gear 2, and the front wall of the treatment tank is provided with a movable groove 2 corresponding to the waste discharge pipe.

[0015] A method for continuous separation of protein and dietary fiber from legume starch wastewater includes the following steps: S1. Control the toothed filter drum and toothed tube to rotate in the same direction at a different speed, and input wastewater through the inlet pipe. The wastewater after being removed by the toothed filter drum to remove coarse fibers and coarse slag will automatically flow to the bottom of the treatment tank. The flocculant is introduced into the wastewater by the dosing component. S2. After the flocculant and wastewater are mixed, they pass through spiral tube one, spiral tube two and spiral tube three from top to bottom for flocculation. The fully flocculated wastewater is pumped to a horizontal screw centrifuge for the separation of protein and fiber. S3. During wastewater treatment, the cleaning component automatically cleans the clogged area of ​​the toothed filter drum. The coarse fibers and coarse slag removed by the toothed filter drum are automatically carried upward by the spiral blades and, under the action of centrifugal force, are vibrated by the vibrating ring and output to the outside from the discharge pipe.

[0016] The beneficial effects of this invention are as follows: This invention utilizes a toothed filter drum and toothed tube to filter coarse fibers and sludge from wastewater before flocculation. A vibrating ring and discharge pipe then remove the coarse fibers and sludge. A cleaning component cleans the toothed filter drum online, ensuring a stable and reliable continuous delivery of wastewater. After removing the coarse fibers and sludge, a flocculant is introduced into the wastewater using a chemical supply component, avoiding flocculant waste and generating effective flocs to ensure continuous and efficient separation of proteins and fibers.

[0017] This invention removes excessively coarse fibers and slag, adds flocculants to the wastewater, and uses staggered spiral tubes (one, two, and three) to fully flocculate the fine fibers and protein colloids in the continuously transported wastewater. The flocculated wastewater is then continuously transported to a horizontal screw centrifuge, thereby achieving continuous separation of fine fibers and proteins in the wastewater. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the spiral tube of the present invention, specifically the first and second parts. Figure 3 This is a three-dimensional sectional view of the processing tank portion of the present invention; Figure 4 This is a three-dimensional structural diagram of the toothed filter drum and toothed tube of the present invention; Figure 5 This is a three-dimensional cross-sectional view of the toothed filter drum and the vibration ring of the present invention; Figure 6 This is a three-dimensional structural diagram of the vibration ring and rotating ring of the present invention.

[0019] Reference numerals: 1. Support; 2. Treatment tank; 21. Toothed filter drum; 22. Pin; 23. Toothed tube; 24. Spiral blade; 25. Water inlet pipe; 3. Shaft; 31. Gear 1; 32. Gear 2; 4. Chemical tank; 41. Cross valve stem; 42. Agitator blade; 5. Vibrating ring; 51. Waste discharge pipe; 52. Guide groove; 6. Rotating ring; 61. Annular air chamber; 62. Air guide frame; 63. Air inlet pipe; 7. Spiral tube 1; 71. Spiral tube 2; 72. Spiral tube 3; 73. Water pump; 74. Horizontal screw centrifuge. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] Example 1, as Figures 1-6 As shown, the continuous separation device for protein and dietary fiber in soybean starch wastewater includes a support 1 installed on the ground at the front and rear, and a horizontal screw centrifuge 74. A treatment tank 2 with a narrow neck at the bottom is installed on the top of the support 1. Toothed tubes 23 and toothed filter drums 21, rotating in the same direction at different speeds, are rotatably connected to the upper and lower sides of the inner wall of the treatment tank 2. The toothed tubes 23 are located inside the toothed filter drum 21, with the bottom of the toothed tubes 23 away from the lower wall of the inner cavity of the toothed filter drum 21. A sliding joint is fixedly connected to the outer wall of the bottom of the toothed tubes 23, which slides against the inner wall and lower wall of the toothed filter drum 21. The spiral blade 24 is in contact with the treatment tank 2. The water inlet pipe 25 is fixedly inserted into the upper wall of the treatment tank 2 and connects to the inner cavity of the toothed tube 23. A drug supply component for supplying the agent to the bottom of the treatment tank 2 is provided in the middle of the treatment tank 2. A dirt removal cavity is formed between the toothed tube 23 and the upper end of the toothed filter drum 21. A vibrating ring 5 is slidably engaged with the inner wall of the treatment tank 2 around the dirt removal cavity. A dirt discharge pipe 51 is fixedly connected to the front end of the vibrating ring 5. A movable groove corresponding to the dirt discharge pipe 51 is opened on the front wall of the treatment tank 2. A cleaning component is provided around the toothed filter drum 21. The bottom of the treatment tank 2 is fixedly connected with staggered spiral tubes 71, 72, and 71. A water pump 73 is installed between the bottom of spiral tube 72 and the horizontal screw centrifuge 74. The water pump 73 can be a low-shear screw pump or a cam pump as needed. The water pump 73 is installed at the bottom of the support 1. Spiral tubes 71 and 72 are both fixedly connected in the support 1.

[0022] The water pump 73 is installed at the bottom of the support 1, and the spiral tube 2 71 and spiral tube 3 72 are both fixedly connected in the support 1.

[0023] During wastewater treatment, the toothed filter drum 21 and toothed tube 23 are controlled to rotate in the same direction at a differential speed, and wastewater is fed into the inlet pipe 25. The wastewater enters the bottom of the inner cavity of the toothed filter drum 21 through the toothed tube 23 and is thrown out through the filtration section at the bottom of the outer periphery of the toothed filter drum 21 under the action of centrifugal force. On the one hand, the coarse fibers and coarse sludge in the wastewater are automatically intercepted and adhere to the inner wall of the toothed filter drum 21 under the action of centrifugal force, and are conveyed upward by the spiral blade 24. During the upward conveying, the coarse fibers and coarse sludge are automatically dewatered when passing through the upper filtration section. When the coarse fibers and coarse sludge are lifted to the upper end of the toothed filter drum 21, they are thrown along the upper end of the toothed filter drum 21 towards the edge of the impurity removal chamber and adhere to the inner wall of the vibrating ring 5. By controlling the vibration of the vibrating ring 5, the fibers and coarse sludge adhering to the inner wall of the vibrating ring 5 can be removed. The coarse fibers and slag are shaken off and the coarse fibers and slag follow the rotation of the toothed filter drum 21. When the coarse fibers and slag pass through the discharge pipe 51, they are vibrated and output. During this period, the cleaning component can be controlled to clean the blockage area of ​​the filter section of the toothed filter drum 21 to ensure stable wastewater output. On the other hand, the wastewater with removed coarse fibers and slag is automatically discharged from the toothed filter drum 21 and flows to the bottom of the treatment tank 2. The chemical supply component automatically inputs flocculant into this part of the wastewater. After the flocculant and wastewater are mixed, they pass through the staggered spiral tubes 71, 72 and 71 respectively from top to bottom under the action of gravity. The protein and fine fiber in the wastewater are flocculated and separated. The fully flocculated wastewater is pumped by the water pump 73 to the horizontal screw centrifuge 74 for the separation of protein and fiber.

[0024] In Example 2, based on the above example, a rotating shaft 3 is rotatably connected between the top of the support 1 and the right wall of the treatment tank 2. The rotating shaft 3 is driven by a motor installed on the top of the treatment tank 2. Gear 1 31 that meshes with the toothed tube 23 and gear 2 32 that meshes with the toothed filter drum 21 are fixedly connected to the upper and lower sides of the rotating shaft 3, respectively. The diameter of gear 2 32 is smaller than the diameter of gear 1 31.

[0025] The right wall of the processing tank 2 has a movable groove corresponding to gear 1 31 and gear 2 32.

[0026] By designing gear 2 32 with a smaller diameter than gear 1 31, the motor drives the rotating shaft 3 so that gear 1 31 and gear 2 32 rotate synchronously. At the same time, the toothed tube 23 and the toothed filter drum 21 rotate synchronously in the same direction at a different speed. The toothed tube 23 drives the spiral blade 24 to rotate at a faster speed. When the toothed filter drum 21 is relatively stationary, the spiral blade 24 rotates at a relatively low speed. This facilitates the stable scraping and upward conveying of coarse fibers and coarse slag that adhere to the inner wall of the toothed filter drum 21 under centrifugal force. In addition, the spiral blade 24 can also scrape and clean the inner wall of the toothed filter drum 21 at a low speed, reducing the probability of clogging.

[0027] In Example 3, based on the above examples, the drug supply assembly includes a drug tank 4 installed on the top of the processing tank 2. A cross valve stem 41 is rotatably connected between the drug tank 4 and the middle of the processing tank 2. The cross valve stem 41 is driven by a motor 2 installed on the top of the drug tank 4. The cross valve stem 41 is rotatably and sealingly connected to the lower wall of the toothed filter drum 21. The bottom end of the cross valve stem 41 extends into the narrow neck of the inner cavity of the processing tank 2. A stirring blade 42 is installed at the bottom end of the cross valve stem 41. The cross valve stem 41 has an I-shaped valve channel located above the stirring blade 42.

[0028] During wastewater treatment, the upper port of the valve channel in the cross valve stem 41 is located inside the chemical tank 4. The valve channel in the cross valve stem 41 is opened, and the chemical tank 4 is controlled to deliver flocculant to the wastewater in the narrow neck area of ​​the treatment tank 2 through the valve channel. During this period, the motor drives the cross valve stem 41 to rotate, and the cross valve stem 41 drives the stirring blade 42 to fully and evenly mix the flocculant output from the upper side with the filtered wastewater, thereby improving the subsequent flocculation effect.

[0029] In embodiment four, based on the above embodiment, a guide groove 52 is provided on the inner wall of the vibration ring 5, and pins 22 that slide and engage with the guide groove 52 are fixedly inserted on the left and right sides of the top of the toothed filter drum 21. The guide groove 52 is composed of the annular grooves on the left and right sides and the curved grooves on the front and rear sides. A sealing element that slides and abuts against the vibration ring 5 is provided on the top of the outer periphery of the toothed filter drum 21.

[0030] Initially, both sides of the pin 22 are engaged with the annular groove in the guide groove 52. The toothed filter drum 21 drives the pins 22 on both sides to rotate, and when the pins 22 on both sides are engaged in the curved groove, the vibrating ring 5 is stably lifted. As the toothed filter drum 21 continues to rotate, the vibrating ring 5 vibrates up and down, shaking off the coarse fibers and coarse slag adhering to the inner wall. It also helps the coarse fibers and coarse slag to follow the rotation of the toothed filter drum 21 and are simultaneously vibrated and thrown out when the coarse fibers and coarse slag pass through the discharge pipe 51.

[0031] In Example 5, based on the above examples, the cleaning assembly includes a rotating ring 6 that is rotatably and sealingly connected to the inner wall of the treatment tank 2. The top of the outer periphery of the rotating ring 6 is recessed to form an annular air chamber 61. Air guide frames 62 corresponding to the filter section of the toothed filter drum 21 are fixedly connected to the left and right walls of the inner cavity of the rotating ring 6. An air inlet pipe 63 extending into the annular air chamber 61 is fixedly inserted into the left wall of the treatment tank 2. An air pressurization mechanism is connected to the outside of the air inlet pipe 63. The lower wall of the annular air chamber 61 has a through hole communicating with the air guide frame 62.

[0032] There is a gap between the air guide frame 62 and the outer wall of the toothed filter drum 21. The bottom of the air guide frames 62 on both sides is fixedly connected to the cross valve stem 41. An exhaust hole is opened on the upper wall of the treatment tank 2.

[0033] During wastewater treatment, pressurized air is introduced into the annular chamber 61 through the air inlet pipe 63 via the air pressurization mechanism. The pressurized air enters the air guide frames 62 on both sides through the through hole, thereby backflushing and cleaning the toothed filter drum 21. During this process, the cross valve stem 41 drives the air guide frames 62 on both sides to rotate in the same direction at a speed lower than that of the toothed filter drum 21, ensuring that the toothed filter drum 21 can be cleaned in place.

[0034] In Example 6, based on the above examples, the first spiral tube 7 is conical and has a pitch greater than that of the second spiral tube 71 and the third spiral tube 72. The pitches of the second spiral tube 71 and the third spiral tube 72 gradually decrease. The first spiral tube 7 and the second spiral tube 71, and the second spiral tube 71 and the third spiral tube 72 are connected and transitioned by an arc tube.

[0035] During flocculation, wastewater first enters spiral tube 7. This section has a large spiral angle and steep slope, resulting in high flow velocity under gravity and strong turbulence. Due to the large curvature of the spiral, a significant velocity difference is formed between the inner and outer rings. Particles undergo radial movement under centrifugal force, significantly increasing the probability of collision and effectively promoting the flocculation of soybean protein and fine fibers. Subsequently, the wastewater passes through two arc-shaped transition sections and enters spiral tubes 71 and 72 in sequence. At the arc-shaped transition, the flow direction changes, generating controllable turbulence, which helps the flocs grow further. When wastewater exits spiral tube 72, the flow velocity decreases, and the shear force remains at a low level, protecting the protein and fiber flocs and providing favorable conditions for solid-liquid separation in the subsequent horizontal screw centrifuge 74.

[0036] Example 7 provides a method for continuous separation of protein and dietary fiber in soybean starch wastewater, comprising the following steps: S1. Control the toothed filter drum 21 and toothed tube 23 to rotate in the same direction at a different speed, and input wastewater through the inlet pipe 25. The wastewater after being removed by the toothed filter drum 21 to remove coarse fibers and coarse slag will automatically flow to the bottom of the treatment tank 2. The flocculant will be introduced into the wastewater by the dosing component. S2. After the flocculant and wastewater are mixed, they pass through spiral tube 1 7, spiral tube 2 71 and spiral tube 3 72 from top to bottom for flocculation. The fully flocculated wastewater is pumped by water pump 73 to horizontal screw centrifuge 74 for the separation of protein and fiber. S3. During wastewater treatment, the cleaning component automatically cleans the clogged area of ​​the toothed filter drum 21. The coarse fibers and coarse slag removed by the toothed filter drum 21 are automatically carried upward by the spiral blade 24 and, under the action of centrifugal force, are vibrated by the vibration ring 5 and output to the outside from the discharge pipe 51.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those 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 invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A continuous separation device for protein and dietary fiber in soybean starch wastewater, comprising supports (1) installed on the ground at the front and rear and a horizontal screw centrifuge (74), characterized in that, The support (1) is equipped with a treatment tank (2) with a narrow neck at the bottom. The upper and lower sides of the inner wall of the treatment tank (2) are respectively connected to a toothed tube (23) and a toothed filter drum (21) that rotate in the same direction at different speeds. The outer wall of the bottom of the toothed tube (23) is fixedly connected to a spiral blade (24) that slides against the inner wall and lower wall of the toothed filter drum (21). The upper wall of the treatment tank (2) is fixedly connected to a water inlet pipe (25) that communicates with the inner cavity of the toothed tube (23). The middle part of the treatment tank (2) is provided with a drug supply component that delivers the drug to the bottom of the treatment tank (2). A dirt removal cavity is formed between the toothed tube (23) and the upper end of the toothed filter drum (21). A vibration ring (5) that slides and is engaged with the inner wall of the treatment tank (2) is provided around the dirt removal cavity. A dirt discharge pipe (51) is fixedly connected to the front end of the vibration ring (5). A cleaning component is provided around the toothed filter drum (21). The bottom of the treatment tank (2) is fixedly connected with staggered spiral tubes one (7), spiral tube two (71), and spiral tube three (72). A water pump (73) is installed between the bottom of spiral tube three (72) and the horizontal screw centrifuge (74).

2. The continuous separation device for protein and dietary fiber in legume starch wastewater according to claim 1, characterized in that, The toothed tube (23) is located inside the toothed filter drum (21). The bottom of the toothed tube (23) is far away from the lower wall of the toothed filter drum (21). The top of the support (1) is rotatably connected to the right wall of the treatment tank (2). The rotating shaft (3) is driven by a motor installed on the top of the treatment tank (2). The upper and lower sides of the rotating shaft (3) are respectively fixedly connected to a gear one (31) that meshes with the toothed tube (23) and a gear two (32) that meshes with the toothed filter drum (21). The diameter of the gear two (32) is smaller than the diameter of the gear one (31).

3. The continuous separation device for protein and dietary fiber in legume starch wastewater according to claim 2, characterized in that, The drug supply assembly includes a drug tank (4) installed on the top of the treatment tank (2). A cross valve stem (41) is rotatably connected between the drug tank (4) and the middle of the treatment tank (2). The cross valve stem (41) is driven by a motor installed on the top of the drug tank (4). The cross valve stem (41) is rotatably and sealingly connected to the lower wall of the toothed filter drum (21). The bottom end of the cross valve stem (41) extends into the narrow neck of the inner cavity of the treatment tank (2). A stirring blade (42) is installed at the bottom end of the cross valve stem (41). The cross valve stem (41) has an I-shaped valve channel located on the upper side of the stirring blade (42).

4. The continuous separation device for protein and dietary fiber in legume starch wastewater according to claim 3, characterized in that, The inner wall of the vibration ring (5) is provided with a guide groove (52). The top left and right sides of the toothed filter drum (21) are fixedly inserted with pins (22) that slide and engage with the guide groove (52). The guide groove (52) is composed of the annular grooves on the left and right sides and the curved grooves on the front and rear sides. The top of the outer periphery of the toothed filter drum (21) is provided with a sealing element that slides and abuts against the vibration ring (5).

5. The continuous separation device for protein and dietary fiber in legume starch wastewater according to claim 4, characterized in that, The cleaning assembly includes a rotating ring (6) that is rotatably sealed to the inner wall of the treatment tank (2). The top of the outer periphery of the rotating ring (6) is recessed to form an annular air chamber (61). The left and right walls of the inner cavity of the rotating ring (6) are fixedly connected to air guide frames (62) corresponding to the filter section of the toothed filter drum (21). The left wall of the treatment tank (2) is fixedly inserted with an air inlet pipe (63) extending into the annular air chamber (61). The air inlet pipe (63) is connected to an air pressurization mechanism. The lower wall of the annular air chamber (61) has a through hole communicating with the air guide frame (62).

6. The continuous separation device for protein and dietary fiber in legume starch wastewater according to claim 5, characterized in that, There is a gap between the air guide frame (62) and the outer wall of the toothed filter drum (21). The bottom of the air guide frame (62) on both sides is fixedly connected to the cross valve stem (41). The upper wall of the treatment tank (2) is provided with an exhaust hole.

7. The continuous separation device for protein and dietary fiber in legume starch wastewater according to claim 6, characterized in that, The first spiral tube (7) is conical and has a pitch greater than that of the second spiral tube (71) and the third spiral tube (72). The pitch of the second spiral tube (71) and the third spiral tube (72) gradually decreases. The first spiral tube (7) and the second spiral tube (71), and the second spiral tube (71) and the third spiral tube (72) are connected and transitioned by an arc tube.

8. The continuous separation device for protein and dietary fiber in legume starch wastewater according to claim 7, characterized in that, The water pump (73) is installed at the bottom of the support (1), and the spiral tube two (71) and spiral tube three (72) are both fixedly connected in the support (1).

9. The continuous separation device for protein and dietary fiber in legume starch wastewater according to claim 8, characterized in that, The right wall of the treatment tank (2) is provided with a movable groove 1 corresponding to gear 1 (31) and gear 2 (32), and the front wall of the treatment tank (2) is provided with a movable groove 2 corresponding to the waste discharge pipe (51).

10. A method for continuous separation of protein and dietary fiber in legume starch wastewater, comprising the continuous separation apparatus for protein and dietary fiber in legume starch wastewater as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Control the toothed filter drum (21) and toothed tube (23) to rotate in the same direction at a different speed, and input wastewater through the inlet pipe (25). The wastewater after being removed by the toothed filter drum (21) to remove coarse fibers and coarse slag will automatically flow to the bottom of the treatment tank (2). The flocculant is introduced into the wastewater by the drug supply component. S2. After the flocculant and wastewater are mixed, they pass through spiral tube one (7), spiral tube two (71), and spiral tube three (72) from top to bottom for flocculation. The fully flocculated wastewater is pumped by water pump (73) to horizontal screw centrifuge (74) for protein and fiber separation. S3. During wastewater treatment, the cleaning component automatically cleans the clogged area of ​​the toothed filter drum (21). The coarse fibers and coarse slag removed by the toothed filter drum (21) are automatically carried upward by the spiral blade (24) and, under the action of centrifugal force, are vibrated by the vibration ring (5) and output to the outside from the discharge pipe (51).

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