High-purity L-leucine centrifugal production process

Abstract

The application relates to the technical field of leucine production, and particularly discloses a high-purity L-leucine centrifugal production process, which uses a centrifugal production device, and centrifugal drying of leucine by using the centrifugal production device comprises the following steps: a plurality of filter frames connected with a rotating frame are synchronously rotated by a driving assembly, and water on the surface of leucine is centrifugally dried by centrifugal force generated by rotation; since the number of filter frames is large, the centrifugal drying efficiency of leucine can be improved; after the centrifugal drying of leucine is completed, the inner top plate can be moved downwards, the filter frame bottom is in an open state in the process, leucine can fall from the filter frame bottom under the action of gravity, and after all the leucine falls, the inner top plate is moved upwards again, then the filter frame bottom is closed, and when the filter frame continuously rotates, the leucine in the filter frame can be conveniently taken out by workers.

Description

Technical Field

[0001] This invention relates to the field of leucine production technology, specifically a centrifugal production process for high-purity L-leucine. Background Technology

[0002] Leucine, chemically known as L-2-amino-4-methylpentanoic acid, is a white crystalline or crystalline powder, odorless, with a slightly bitter taste. It is readily soluble in formic acid, slightly soluble in water, and very slightly soluble in ethanol or ether. The production process of leucine involves a series of steps, including concentration, primary neutralization, ammonolysis, decolorization, secondary neutralization, and refining. In the refining stage, the crude leucine from the secondary neutralization stage is first rinsed with distilled water, then centrifuged, and finally dried in a dryer.

[0003] When centrifuging crude leucine, the crude leucine needs to be placed in a filter frame first, and then the crude leucine is spun dry by the high-speed movement of the filter frame.

[0004] The existing technology has at least the following problems: 1. After the crude leucine inside the filter frame is centrifuged and dried, the filter frame needs to be stopped by external equipment first. Then, the dried leucine particles inside the filter frame are taken out. After the crude leucine is placed back into the filter frame, the power supply of the external electric equipment can be turned on again. The above operation increases the number of steps for the operator and reduces the efficiency of the operator.

[0005] 2. Since there is no cleaning equipment, in order to avoid clogging of the filter holes, the staff need to clean the filter frame repeatedly, which increases the number of steps for the staff. Summary of the Invention

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-purity L-leucine centrifugal production process, which uses a centrifugal production device, the centrifugal production device including a protective cover, a centrifugal mechanism, a cleaning mechanism and a feeding hopper, the bottom of the protective cover is equipped with support legs, a plurality of centrifugal mechanisms are distributed circumferentially inside the protective cover, a cleaning mechanism is installed at the axial position of the protective cover, and a feeding hopper is installed at the top of the protective cover.

[0007] The centrifugal mechanism includes a filter frame, an inner top plate, a rotating frame, a first toothed rod, a connecting rod, a sealing plate, a support rod, a drive assembly, and an outer top plate. The bottom of the protective cover has several grooves evenly distributed around its circumference. A rotating frame is rotatably connected inside each groove. Several rotating frames are connected to each other via a drive assembly. A filter frame is welded inside each rotating frame. An inner top plate is located at the top center of the filter frame. An outer top plate is rotatably connected to the outer wall of the inner top plate. Storage slots are located at both ends of the bottom of the filter frame. Support rods are installed inside each storage slot. A connecting rod is rotatably connected between two support rods. A sealing plate is installed on the outer wall of the connecting rod. First toothed discs are installed at both ends of the connecting rod. A first toothed rod is meshed with one side of each first toothed disc. The top of the first toothed rod is connected to the bottom of the outer top plate.

[0008] The centrifugal drying process of leucine using the above-mentioned centrifugal production device includes the following steps:

[0009] S1. Centrifugal drying: Leucine is fed into the corresponding filter frame through the feed hopper, and then multiple filter frames are rotated synchronously. The centrifugal force generated by the rotation is used to dry the water on the surface of the leucine.

[0010] S2. Unloading operation: The inner top plate drives the outer top plate to move downward. During this process, the bottom of the filter frame is open, allowing leucine to fall out from the bottom of the filter frame under gravity. After all the leucine has fallen out, the inner top plate can be moved upward to reset.

[0011] S3. Cleaning: As the inner top plate continues to move downwards, the cleaning mechanism vibrates the filter frame, causing the residual leucine on the surface of the filter frame to fall off.

[0012] S4. Repeat steps S1-S2 and collect the discharged leucine.

[0013] Preferably, the cleaning mechanism includes a longitudinal rod, a pad, an extension frame, a cam, a vibrating plate, a slide rod, and a connecting rod. The longitudinal rod is installed at the inner axis position of the protective cover. An extension frame is installed around the longitudinal rod. A cam is rotatably connected inside the extension frame. Slide rods are installed above and below the extension frame. A pad is slidably connected between the two slide rods. A spring frame sleeved on the outer wall of the slide rod is connected between the pad and the longitudinal rod. A vibrating plate is installed at the end of the pad away from the longitudinal rod. A connecting rod is installed on the top of the inner top plate. The connecting rod is drivenly connected to the cam.

[0014] Preferably, the drive assembly includes a drive disk and drive teeth. The drive disk is rotatably connected to the bottom axis of the protective cover, and drive teeth are circumferentially mounted on the rotating frame. The drive teeth are meshed with the drive disk.

[0015] Preferably, a second toothed disc is mounted on one end of the cam facing the extension frame, and a second toothed rod is engaged with one side of the second toothed disc, the second toothed rod being fixedly connected to the connecting rod.

[0016] Preferably, a brush is installed on the outer side wall of the outer top plate.

[0017] Preferably, the outer wall of the feed hopper is equipped with a plurality of distribution hoppers.

[0018] Preferably, the bottom of the dispensing hopper is slidably connected to the inner top plate.

[0019] Preferably, the connecting rod has an L-shaped structure.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Leucine is transported to the corresponding filter frame through the feed hopper, and then the multiple filter frames connected to the rotating frame are driven to rotate synchronously through the drive component. The centrifugal force generated by the rotation can dry the water on the surface of leucine. Since there are a large number of filter frames, the efficiency of centrifugal drying of leucine can be increased.

[0021] 2. After the leucine is spun dry, the inner top plate can move the outer top plate downwards. During this process, the bottom of the filter frame will be in an open and closed state. This allows the leucine to fall out from the bottom of the filter frame under the action of gravity. After all the leucine has fallen out, the inner top plate can be moved upwards again, and then the bottom of the filter frame will be closed. This allows the staff to easily remove the leucine from the filter frame while it is rotating, reducing the number of steps required and increasing the efficiency of the staff.

[0022] 3. As the inner top plate continues to move downwards, it will drive the cam to rotate. During this process, the cam will push the pad to move. When the cam stops exerting a constraint force on the pad to the longitudinal rod side, the compressed spring frame will push the vibrating plate connected to the pad to vibrate the filter frame. This will shake off the leucine residue on the surface of the filter frame. Since the filter frame rotates in a cycle, it can be cleaned in multiple directions, avoiding the need for manual cleaning by staff. Attached Figure Description

[0023] Figure 1 This is a flowchart of the production process of the present invention;

[0024] Figure 2 This is a schematic diagram of the centrifugal production device in this invention;

[0025] Figure 3 This is a schematic diagram of the protective cover and centrifugal mechanism in this invention;

[0026] Figure 4 This is a cross-sectional view of the filter frame in this invention (viewed from front to back);

[0027] Figure 5 This is a cross-sectional view of the filter frame in this invention (viewed from bottom to top);

[0028] Figure 6 For the present invention Figure 5 A magnified structural diagram of A in the middle;

[0029] Figure 7 This is a schematic diagram of the connection structure between the filter frame and the cleaning mechanism in this invention;

[0030] Figure 8 For the present invention Figure 7 A magnified structural diagram of B in the diagram;

[0031] Figure 9 This is a bottom view of the protective cover structure in this invention.

[0032] In the diagram: 1. Protective cover; 2. Centrifugal mechanism; 3. Cleaning mechanism; 4. Feed hopper; 41. Distributor hopper; 11. Support leg; 21. Filter frame; 211. Collection trough; 22. Inner top plate; 221. Brush; 23. Rotating frame; 24. First toothed rod; 25. Connecting rod; 251. First toothed disc; 26. Sealing plate; 27. Support rod; 28. Drive assembly; 281. Drive disc; 282. Drive teeth; 29. ​​Outer top plate; 31. Longitudinal rod; 32. Pad plate; 33. Extension frame; 34. Cam; 341. Second toothed disc; 35. Vibrating plate; 36. Slide rod; 361. Spring frame; 37. Connecting rod; 371. Second toothed rod. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, a centrifugal production process for high-purity L-leucine is described, which uses a centrifugal production device. The centrifugal production device includes a protective cover 1, a centrifugal mechanism 2, a cleaning mechanism 3, and a feed hopper 4. Support legs 11 are installed at the bottom of the protective cover 1. Several centrifugal mechanisms 2 are distributed circumferentially inside the protective cover 1. A cleaning mechanism 3 is installed at the axial position of the protective cover 1. A feed hopper 4 is installed at the top of the protective cover 1. Several distributing hoppers 41 are installed on the outer side wall of the feed hopper 4.

[0035] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the centrifugal mechanism 2 includes a filter frame 21, an inner top plate 22, a rotating frame 23, a first toothed rod 24, a connecting rod 25, a sealing plate 26, a support rod 27, a drive assembly 28, and an outer top plate 29. The bottom of the protective cover 1 has several grooves evenly spaced around its circumference. A rotating frame 23 is rotatably connected inside each groove. The rotating frames 23 are connected to each other via the drive assembly 28. A filter frame 21 is welded inside each rotating frame 23. An inner top plate 22 is located at the top center of the filter frame 21. Several distributing hoppers 41 are connected to corresponding inner top plates 22. The inner top plate 29... 2. Connected to external lifting equipment, the outer wall of the inner top plate 22 is rotatably connected to the outer top plate 29. The bottom ends of the filter frame 21 are provided with storage grooves 211. The inside of the storage groove 211 is equipped with a support rod 27. The two support rods 27 are rotatably connected to a connecting rod 25. The outer wall of the connecting rod 25 is equipped with a sealing plate 26. The two ends of the connecting rod 25 are equipped with a first toothed disc 251. One side of the first toothed disc 251 is meshed with a first toothed rod 24. The first toothed rod 24 is slidably connected to the groove wall of the storage groove 211. The top of the first toothed rod 24 is connected to the bottom of the outer top plate 29.

[0036] The centrifugal drying process of leucine using the above-mentioned centrifugal production device includes the following steps:

[0037] S1. Centrifugal drying: Leucine is fed into the corresponding filter frame 21 through the feed hopper 4, and then multiple filter frames 21 are rotated synchronously. The centrifugal force generated by the rotation is used to dry the water on the surface of the leucine.

[0038] S2. Unloading operation: The inner top plate 22 drives the outer top plate 29 to move downward. During this process, the bottom of the filter frame 21 is in the open state, allowing leucine to fall out from the bottom of the filter frame 21 under the action of gravity. After all the leucine has fallen out, the inner top plate 22 moves upward to reset.

[0039] S3. Cleaning work: As the inner top plate 22 continues to move downward, the cleaning mechanism 3 vibrates the filter frame 21, causing the leucine residue on the surface of the filter frame 21 to fall off.

[0040] S4. Repeat steps S1-S2 and collect the discharged leucine.

[0041] In practical operation, when leucine crystals need to be filtered, leucine can be poured into hopper 4. Then, with the cooperation of the distribution hopper 41 and the internal screw conveyor, the leucine will fall into the corresponding filter frames 21. Then, the drive assembly 28 drives the filter frames 21 connected to the rotating frame 23 to rotate synchronously. The centrifugal force generated by the rotation can dry the water on the surface of the leucine. After drying, the inner top plate 22 can drive the outer top plate 29 to move downward with the cooperation of the external lifting device. During this process, the first toothed rod 24 will drive the first toothed disc 25. The closed plate 26 connected to 1 rotates downwards, thereby opening the bottom of the filter frame 21. This allows leucine to fall out from the bottom of the filter frame 21 under gravity. After the above operation is completed, the inner top plate 22 can be moved upwards, and then, with the cooperation of the first toothed rod 24, the closed plate 26 is driven to close the bottom of the filter frame 21. Then, the leucine that needs to be spun dry can be poured into the hopper 4. This makes it easy for workers to remove the leucine from the filter frame 21 while the filter frame 21 is continuously rotating. In addition, the large number of filter frames 21 can increase the overall work efficiency.

[0042] like Figure 9 As shown, the drive assembly 28 includes a drive disk 281 and drive teeth 282. The drive disk 281 is rotatably connected to the bottom axis of the protective cover 1. The drive teeth 282 are circumferentially mounted on the rotating frame 23. The drive teeth 282 mesh with the drive disk 281. In actual operation, an external motor is connected to the drive disk 281. When the filter frame 21 needs to be rotated, the motor power can be turned on. The motor can drive the drive disk 281 to rotate. Then, the drive disk 281 will drive the rotating frame 23 to rotate under the cooperation of the drive teeth 282. The rotating frame 23 can drive the filter frame 21 to rotate.

[0043] like Figure 7 As shown, a brush 221 is installed on the outer side wall of the outer top plate 29. In actual operation, when the outer top plate 29 moves downward, the inner side wall of the filter frame 21 can be cleaned by the brush 221.

[0044] like Figure 4 As shown, the hopper 41 and the inner top plate 22 are slidably connected. In actual operation, this allows the inner top plate 22 to move downward more smoothly, avoiding the hopper 41 from blocking the inner top plate 22.

[0045] like Figure 7 and Figure 8As shown, the cleaning mechanism 3 includes a longitudinal rod 31, a pad 32, an extension frame 33, a cam 34, a vibrating plate 35, a slide rod 36, and a connecting rod 37. The longitudinal rod 31 is installed at the inner axis of the protective cover 1. An extension frame 33 is installed around the longitudinal rod 31. A cam 34 is rotatably connected inside the extension frame 33. Slide rods 36 are installed above and below the extension frame 33. A pad 32 is slidably connected between the two slide rods 36. A spring frame 361, sleeved on the outer wall of the slide rod 36, connects the pad 32 and the longitudinal rod 31. A vibrating plate 35 is installed at the end of the pad 32 away from the longitudinal rod 31. A connecting rod 37 is installed at the top of the inner top plate 22. A second toothed rod 371 is installed at the bottom of the connecting rod 37. A second toothed disc is installed at the end of the cam 34 facing the extension frame 33. 341. One side of the second gear plate 341 is engaged with the second gear rod 371. In specific operation, when the inner top plate 22 moves downward, it will drive the connecting rod 37 to move downward synchronously. Then, the second gear rod 371 will drive the cam 34 connected to the second gear plate 341 to rotate. During this process, the cam 34 will push the pad 32 to move. When the cam 34 stops giving the pad 32 the constraint force to the longitudinal rod 31, the compressed spring frame 361 will push the vibrating plate 35 connected to the pad 32 to vibrate the filter frame 21. In this way, the leucine remaining in the filter pores inside the filter frame 21 can be shaken off. Since the filter frame 21 rotates in a cycle, it can be cleaned from multiple directions, saving the step of manual cleaning by the staff and making the cleaning more comprehensive.

[0046] like Figure 7 As shown, the connecting rod 37 has an L-shaped structure, so when the inner top plate 22 moves downward, the connecting rod 37 is prevented from contacting the filter frame 21.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-purity L-leucine centrifugal production process using a centrifugal production device comprising a protective cover (1), a centrifugal mechanism (2), a cleaning mechanism (3), and a feeding hopper (4), characterized in that: The protective cover (1) has several centrifugal mechanisms (2) distributed circumferentially inside, a cleaning mechanism (3) is installed at the axial position of the protective cover (1), and a feeding hopper (4) is installed on the top of the protective cover (1). The centrifugal mechanism (2) includes a filter frame (21), an inner top plate (22), a rotating frame (23), a first toothed rod (24), a connecting rod (25), a sealing plate (26), a support rod (27), a drive assembly (28), and an outer top plate (29). The bottom of the protective cover (1) has several grooves evenly distributed around its circumference. A rotating frame (23) is rotatably connected inside each groove. Several rotating frames (23) are connected to each other via the drive assembly (28). A filter frame (21) is welded inside each rotating frame (23). An inner top plate (22) is located at the top center of the filter frame (21). The outer wall of the inner top plate (22) is rotatably connected to the outer top plate (29). The bottom ends of the filter frame (21) are provided with storage grooves (211). The storage grooves (211) are equipped with support rods (27). The two support rods (27) are rotatably connected to a connecting rod (25). The outer wall of the connecting rod (25) is equipped with a sealing plate (26). The two ends of the connecting rod (25) are equipped with a first toothed disc (251). The first toothed disc (251) is meshed with a first toothed rod (24) on one side. The top of the first toothed rod (24) is connected to the bottom of the outer top plate (29). The centrifugal drying process of leucine using the above-mentioned centrifugal production device includes the following steps: S1. Centrifugal drying: Leucine is fed into the corresponding filter frame (21) through the feed hopper (4), and then multiple filter frames (21) are rotated synchronously. The centrifugal force generated by the rotation is used to dry the water on the surface of leucine. S2, Unloading operation: The inner top plate (22) drives the outer top plate (29) to move downward. During this process, the bottom of the filter frame (21) is open, so that leucine falls out from the bottom of the filter frame (21) under the action of gravity. When all the leucine falls out, the inner top plate (22) moves upward to reset. S3. Cleaning work: As the inner top plate (22) continues to move downward, the cleaning mechanism (3) vibrates the filter frame (21) to shake off the leucine residue on the surface of the filter frame (21); S4. Repeat steps S1-S2 and collect the discharged leucine.

2. The high purity L-leucine centrifugal production process according to claim 1, characterized by: The cleaning mechanism (3) includes a longitudinal rod (31), a pad (32), an extension frame (33), a cam (34), a vibrating plate (35), a slide rod (36), and a connecting rod (37). The longitudinal rod (31) is installed at the inner axis position of the protective cover (1). The extension frame (33) is installed around the longitudinal rod (31). The cam (34) is rotatably connected inside the extension frame (33). The slide rod (36) is installed above and below the extension frame (33). The pad (32) is slidably connected between the two slide rods (36). A spring frame (361) sleeved on the outer wall of the slide rod (36) is connected between the pad (32) and the longitudinal rod (31). The vibrating plate (35) is installed at the end of the pad (32) away from the longitudinal rod (31). The connecting rod (37) is installed on the top of the inner top plate (22). The connecting rod (37) is connected to the cam (34) in a transmission manner.

3. The high purity L-leucine centrifugal production process according to claim 1, characterized by: The drive assembly (28) includes a drive disk (281) and drive teeth (282). The drive disk (281) is rotatably connected at the bottom axis of the protective cover (1). The drive teeth (282) are circumferentially mounted on the rotating frame (23). The drive teeth (282) are meshed with the drive disk (281).

4. The high purity L-leucine centrifugal production process according to claim 2, characterized by: A second gear plate (341) is mounted on one end of the cam (34) facing the extension frame (33). A second gear rod (371) is meshed with one side of the second gear plate (341). The second gear rod (371) is fixedly connected to the connecting rod (37).

5. The high purity L-leucine centrifugal production process according to claim 1, characterized by: A brush (221) is installed on the outer side wall of the outer top plate (29).

6. The high purity L-leucine centrifugal production process according to claim 1, characterized by: The outer wall of the feed hopper (4) is equipped with several distribution hoppers (41).

7. The centrifugal production process for high-purity L-leucine according to claim 6, characterized in that: The bottom of the material distribution hopper (41) is slidably connected to the inner top plate (22).

8. The centrifugal production process for high-purity L-leucine according to claim 2, characterized in that: The connecting rod (37) has an L-shaped structure.

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