Unnatural amino acid solution decolorizing device

Abstract

The utility model relates to the technical field of amino acid production, in particular to a non-natural amino acid solution decolorizing device which is simpler in operation of replacing activated carbon particles, low in sealing process requirement and favorable for improving the working efficiency. Comprising a decolorizing tank, a liquid inlet pipe and a liquid outlet pipe, the upper sieve plate is mounted in the middle of the decolorizing chamber of the decolorizing tank, the lower end of the feeding pipe extends into the lower part of the upper sieve plate, the lower sieve plate is mounted in the middle of the decolorizing chamber of the decolorizing tank and is positioned below the upper sieve plate, and an activated carbon filler layer is formed between the upper sieve plate and the lower sieve plate; the liquid outlet pipe is located below the lower sieve plate, the input end of the spiral feeder extends between the lower sieve plate and the upper sieve plate, the input end of the spiral feeder is close to the lower sieve plate, the output end of the spiral feeder extends out of the decolorizing tank, and an auger blade is rotationally mounted in the spiral feeder and is provided with a rotating shaft and a spiral blade.

Description

Technical Field

[0001] This utility model relates to the technical field of amino acid production, and in particular to a decolorization device for non-natural amino acid solutions. Background Technology

[0002] In the production of non-natural amino acid products, decolorization and purification of amino acids are necessary to improve product quality. To facilitate the replacement of activated carbon granules, Chinese utility model patent CN219815362U discloses a decolorization device. This device includes a centrifuge tank and a circular base. A feed pipe is located on the upper surface of the centrifuge tank, and a discharge pipe is located at the bottom. A partition pipe is located at the bottom of the discharge pipe, and a decolorization box is located at the bottom of the partition pipe. Inner frame plates are movably installed at both the upper and lower ends of the decolorization box, and a filter layer is located in the middle of the inner frame plates. An extension plate is provided at the head of the frame plate, and the head of the extension plate extends out of the decolorization box and is equipped with a sealing plate. A handle is movably provided on the front end of the sealing plate. A discharge port is provided at the bottom of the decolorization box. By setting a partition pipe below the centrifuge tank and the decolorization box, the centrifuged amino acids enter the decolorization box for decolorization treatment. At the same time, a pair of quickly adjustable inner frame plates and filter layers are set in the decolorization box. The filter layers are used to filter and decolorize the amino acids. An extension plate and sealing plate are set in front of the inner frame plates. With the help of the handle, the inner frame plates can be quickly removed to facilitate cleaning and replacement of the filter layers.

[0003] However, when replacing activated carbon granules, the above-mentioned decolorization device still requires disassembling the sealing plate, the insertion groove, the side plate, the extension plate, the inner frame plate, and the filter layer, making the replacement of activated carbon granules still relatively complicated. Moreover, after the above structures are reassembled, their sealing performance needs to be considered, which requires high process standards. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a non-natural amino acid solution decolorization device that simplifies the operation of replacing activated carbon particles, reduces the requirements for sealing processes, and improves work efficiency.

[0005] This utility model discloses a decolorization device for a non-natural amino acid solution, comprising a decolorization tank, an inlet pipe, and an outlet pipe. The decolorization tank has a decolorization chamber inside. The inlet pipe is installed at the upper part of the decolorization tank, and the outlet pipe is installed at the lower part, both communicating with the decolorization chamber. It also includes a feeding pipe, an upper screen plate, a lower screen plate, a screw conveyor, and auger blades. The upper screen plate is installed in the middle of the decolorization chamber, and the lower end of the feeding pipe extends below the upper screen plate, while the upper end of the feeding pipe is positioned... Outside the decolorization tank, a lower sieve plate is installed in the middle of the decolorization chamber, below the upper sieve plate. An activated carbon packing layer is formed between the upper and lower sieve plates. The outlet pipe is located below the lower sieve plate. The input end of the screw feeder extends between the lower and upper sieve plates, and is close to the lower sieve plate. The output end of the screw feeder extends outside the decolorization tank. An auger blade is rotatably installed inside the screw feeder, and the auger blade is equipped with a rotating shaft and screw blades. During operation... Activated carbon particles are fed into the packing layer between the upper and lower sieve plates via the feeding pipe. Both the upper and lower sieve plates are equipped with filter holes smaller than the activated carbon particles. The non-natural amino acid solution is fed into the upper part of the decolorization chamber of the decolorization tank through the inlet pipe. The non-natural amino acid solution enters the activated carbon particle packing layer through the filter holes of the upper sieve plate. The pigment components and impurities in the non-natural amino acid solution are adsorbed by the activated carbon particles, thus decolorizing the solution. The decolorized non-natural amino acid solution reaches the lower part of the decolorization chamber of the decolorization tank through the filter holes of the lower sieve plate and is discharged through the outlet pipe. When it is necessary to replace the activated carbon particles, the addition of non-natural amino acid solution is stopped, the auger blades rotate, and the activated carbon particles between the lower and upper sieve plates are discharged through the screw conveyor. Activated carbon particles are then replenished through the feeding pipe to complete the replacement of the activated carbon particles. Compared with the existing technology, there is no disassembly and reassembly of structures and parts when replacing activated carbon particles, making the operation simpler and eliminating the need to consider sealing issues. The process requirements are reduced, which is conducive to improving work efficiency.

[0006] Preferably, the assembly also includes a cover, an arm plate, and a lever. The cover is rotatably mounted on the outer wall of the input end of the screw feeder. Multiple openings are provided on the side wall of the cover, aligning with the input port of the screw feeder. The side wall of the cover closes the input port of the screw feeder. Multiple one-way slots are provided circumferentially in the center of the cover. The arm plate is mounted on the rotating shaft of the auger blades. The middle part of the lever is elastically hinged to the arm plate via a hinge shaft and a torsion spring assembly. A limiting rod is provided at the inner end of the lever, which is blocked by one side wall of the arm plate. The outer end of the lever is limited and blocked by the end of the one-way slots of the cover. When normally decolorizing non-natural amino acid solutions, the side wall of the cover closes the input end of the screw feeder. The opening is sealed. When it is necessary to replace the activated carbon granules, the auger blades reverse, causing the auger blade shaft to drive the arm plate to reverse, which in turn drives the lever to rotate. When the outer end of the lever is blocked by the one-way groove end limit of the cover, the arm plate blocks the lever's limit rod. The auger blades continue to reverse, causing the lever to push the cover to rotate, aligning the multiple openings of the cover with the input port of the screw feeder. The auger blades start to rotate forward. At this time, the outer end of the lever is not blocked by the one-way groove end limit of the cover, and the inner end limit rod of the lever is not blocked by the arm plate, so the cover will not be pushed. At this time, the activated carbon granules between the lower and upper screen plates enter the screw feeder and are discharged.

[0007] Preferably, the system also includes a flow guide plate and a second outlet pipe. The flow guide plate is installed in the lower part of the decolorization chamber of the decolorization tank, located between the lower sieve plate and the outlet pipe. The outer edge of the flow guide plate is connected to the inner wall of the decolorization tank, and a liquid passage hole is provided in the middle of the flow guide plate. The second outlet pipe is installed in the lower part of the decolorization tank, with its input end extending into the lower part of the decolorization chamber. The second outlet pipe is located below the outlet pipe. The flow guide plate is conical, and it gathers the non-natural amino acid solution that has been decolorized by activated carbon particles and guides it towards the bottom center of the decolorization chamber of the decolorization tank. This allows the non-natural amino acid solution to settle and precipitate at the bottom of the decolorization chamber. The upper layer of non-natural amino acid solution is discharged through the outlet pipe, and the lower layer of non-natural amino acid solution is discharged through the second outlet pipe for subsequent cyclic decolorization or further treatment.

[0008] Preferably, it also includes a permeation membrane assembly, which is installed in the upper part of the decolorization chamber of the decolorization tank. The permeation membrane assembly is located above the upper sieve plate, and the outer edge of the permeation membrane assembly is connected to the inner wall of the decolorization tank, while the inner edge of the permeation membrane assembly is connected to the outer wall of the feed pipe. The non-natural amino acid solution input through the inlet pipe falls onto the permeation membrane assembly, and the non-natural amino acid solution is permeated and filtered through the permeation membrane assembly to intercept and filter out some impurities and pigments. The non-natural amino acid solution that has passed through the permeation membrane assembly is then decolorized by adsorption of activated carbon particles, thereby improving the decolorization efficiency of the non-natural amino acid solution.

[0009] Preferably, it also includes a discharge pipe, the input end of which extends into the upper part of the decolorization chamber of the decolorization tank, and the input end of the discharge pipe is close to the upper end face of the discharge pipe; the non-natural amino acid solution is filtered and intercepted by the permeation membrane assembly, thereby concentrating and enriching the impurities and pigments. After working for a period of time, the concentrated solution enriched with impurities and pigments is discharged through the discharge pipe.

[0010] Preferably, it also includes a concentration detection component and an electrically controlled valve. The output end of the discharge pipe is installed on the electrically controlled valve, and the concentration detection component is installed on the upper part of the decolorization chamber of the decolorization tank. The concentration detection component is used to detect the concentration of impurities and pigments in the non-natural amino acid solution on the permeation membrane module. The concentration detection component is electrically connected to the electrically controlled valve. As the working time of the permeation membrane module increases, the concentration of impurities and pigments in the non-natural amino acid solution on the permeation membrane module gradually increases. The concentration detection component detects the above concentration value. When the concentration value reaches the set value, the concentration detection component generates an electrical signal. After receiving the electrical signal, the electrically controlled valve opens, allowing the concentrate on the permeation membrane module to be discharged through the discharge pipe.

[0011] Preferably, the concentration detection component includes a visual detector and a marker plate. The visual detector is installed on the top wall of the decolorization tank, and the marker plate is installed on the permeate membrane assembly, with the marker plate located below the detection end of the visual detector. The visual detector takes a picture of the marker plate. When the concentration of impurities and pigments in the non-natural amino acid solution on the permeate membrane assembly is low, the image clarity of the marker plate is high. When the concentration of impurities and pigments in the non-natural amino acid solution on the permeate membrane assembly is high, the image clarity of the marker plate decreases. When the clarity of the marker plate drops to a set value, it is determined that the concentration of impurities and pigments in the non-natural amino acid solution on the permeate membrane assembly has reached the discharge concentration.

[0012] Compared with the prior art, the advantages of this utility model are: there is no disassembly and reassembly of structure and parts when replacing activated carbon granules, the operation is simpler, there is no need to consider sealing issues, the process requirements are reduced, and it is conducive to improving work efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of a partial sectional view of the structure of this utility model from an isometric perspective;

[0015] Figure 3 This is a schematic diagram of the isometric structure of this utility model;

[0016] Figure 4 It is a structural diagram of the membrane module, residual discharge tube, electrically controlled valve, visual detector and marking plate, etc.

[0017] Figure 5 It is a structural diagram of the feed pipe, upper screen plate, and lower screen plate, etc.

[0018] Figure 6 It is a structural diagram of the screw feeder, auger blades, cover, arm plate and lever, etc.

[0019] Figure 7 This is a structural diagram showing the disassembled state of the screw feeder, auger blades, cover, arm plate, and lever.

[0020] The following are labels in the attached diagram: 1. Decolorization tank; 2. Inlet pipe; 3. Outlet pipe; 4. Feeding pipe; 5. Upper sieve plate; 6. Lower sieve plate; 7. Screw feeder; 8. Screw blade; 9. Cover; 10. Arm plate; 11. Lever; 12. Flow guide plate; 13. Second outlet pipe; 14. Permeate membrane module; 15. Residue discharge pipe; 16. Electrically controlled valve; 17. Vision detector; 18. Marking plate. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0022] Example 1

[0023] like Figures 1 to 3 , Figure 5 , Figure 6 and Figure 7As shown, a decolorizing device for a non-natural amino acid solution includes a decolorizing tank 1, an inlet pipe 2, and an outlet pipe 3. The decolorizing tank 1 has a decolorizing chamber inside. The inlet pipe 2 is installed at the upper part of the decolorizing tank 1, and the outlet pipe 3 is installed at the lower part of the decolorizing tank 1. Both the inlet pipe 2 and the outlet pipe 3 are connected to the decolorizing chamber of the decolorizing tank 1. It also includes a feeding pipe 4, an upper screen plate 5, a lower screen plate 6, a screw conveyor 7, and auger blades 8. The upper screen plate 5 is installed in the middle of the decolorizing chamber of the decolorizing tank 1. The lower end of the feeding pipe 4 extends below the upper screen plate 5, and the upper end of the feeding pipe 4 is positioned... Outside the decolorizing tank 1, a lower sieve plate 6 is installed in the middle of the decolorizing chamber of the decolorizing tank 1, located below the upper sieve plate 5. An activated carbon packing layer is formed between the upper sieve plate 5 and the lower sieve plate 6. The outlet pipe 3 is located below the lower sieve plate 6. The input end of the screw feeder 7 extends between the lower sieve plate 6 and the upper sieve plate 5, and is close to the lower sieve plate 6. The output end of the screw feeder 7 extends outside the decolorizing tank 1. An auger blade 8 is rotatably installed inside the screw feeder 7, and the auger blade 8 is equipped with a rotating shaft and spiral blades. A cover is also included. 9. Arm plate 10 and lever 11; cover 9 is rotatably mounted on the outer wall of the input end of screw feeder 7. Multiple openings are provided on the side wall of cover 9, aligned with the input port of screw feeder 7. The side wall of cover 9 closes the input port of screw feeder 7. Multiple one-way slots are provided around the center of cover 9. Arm plate 10 is mounted on the rotating shaft of auger blade 8. The middle part of lever 11 is elastically hinged to arm plate 10 via a hinge shaft and torsion spring assembly. A limiting rod is provided at the inner end of lever 11, and the limiting rod is blocked by one side wall of arm plate 10. The outer end of the lever 11 is blocked by the end of the one-way slot of the cover 9; it also includes a flow guide plate 12 and a second outlet pipe 13. The flow guide plate 12 is installed in the lower part of the decolorization chamber of the decolorization tank 1. The flow guide plate 12 is located between the lower sieve plate 6 and the outlet pipe 3. The outer edge of the flow guide plate 12 is connected to the inner wall of the decolorization tank 1. A liquid passage hole is provided in the middle of the flow guide plate 12. The second outlet pipe 13 is installed in the lower part of the decolorization tank 1. The input end of the second outlet pipe 13 extends into the lower part of the decolorization chamber of the decolorization tank 1. The second outlet pipe 13 is located below the outlet pipe 3.

[0024] During operation, activated carbon particles are fed into the packing layer between the upper sieve plate 5 and the lower sieve plate 6 through the feeding pipe 4. Both the upper sieve plate 5 and the lower sieve plate 6 are equipped with filter holes smaller than the activated carbon particles. The non-natural amino acid solution is fed into the upper part of the decolorization chamber of the decolorization tank 1 through the inlet pipe 2. The non-natural amino acid solution enters the activated carbon particle packing layer through the filter holes of the upper sieve plate 5. The pigment components and impurities in the non-natural amino acid solution are adsorbed by the activated carbon particles, thus decolorizing it. The decolorized non-natural amino acid solution reaches the lower part of the decolorization chamber of the decolorization tank 1 through the filter holes of the lower sieve plate 6 and is discharged through the outlet pipe 3. The guide hood 12 is conical. The guide hood 12 gathers the non-natural amino acid solution that has been adsorbed and decolorized by the activated carbon particles and directs it towards the middle of the decolorization chamber of the decolorization tank 1. The bottom guide allows the non-natural amino acid solution to settle at the bottom of the decolorization chamber of decolorization tank 1. The upper layer of non-natural amino acid solution is discharged through outlet pipe 3, and the lower layer is discharged through outlet pipe 13 for subsequent recycling decolorization or further treatment. When it is necessary to replace the activated carbon particles, the addition of non-natural amino acid solution is stopped, the auger blades 8 rotate, and the activated carbon particles between the lower sieve plate 6 and the upper sieve plate 5 are discharged through the screw feeder 7. Activated carbon particles are then replenished through the feeding pipe 4 to complete the replacement of activated carbon particles. Compared with the existing technology, there is no disassembly and reassembly of structures and parts when replacing activated carbon particles, making the operation simpler and eliminating the need to consider sealing issues. The process requirements are reduced, which is conducive to improving work efficiency.

[0025] When decolorizing non-natural amino acid solutions, the side wall of the cover 9 seals the input port of the screw feeder 7. When it is necessary to replace activated carbon particles, the auger blades 8 reverse, causing the shaft of the auger blades 8 to drive the arm plate 10 to reverse, causing the arm plate 10 to drive the lever 11 to rotate. When the outer end of the lever 11 is blocked by the end limit of the one-way groove of the cover 9, the arm plate 10 blocks the limit rod of the lever 11, and the auger blades 8 continue to reverse, causing the lever 11 to push the cover 9 to rotate, so that the multiple openings of the cover 9 are aligned with the input port of the screw feeder 7. The auger blades 8 start to rotate forward. At this time, the outer end of the lever 11 will not be blocked by the end limit of the one-way groove of the cover 9, and the inner end limit rod of the lever 11 will not be blocked by the arm plate 10, so that the cover 9 will not be pushed. At this time, the activated carbon particles between the lower screen plate 6 and the upper screen plate 5 enter the screw feeder 7 and are discharged.

[0026] Example 2

[0027] like Figure 1 , Figure 2 and Figure 4As shown, based on Embodiment 1, it further includes a permeate membrane assembly 14, which is installed in the upper part of the decolorization chamber of the decolorization tank 1. The permeate membrane assembly 14 is located above the upper sieve plate 5, and its outer edge is connected to the inner wall of the decolorization tank 1, while its inner edge is connected to the outer wall of the feed pipe 4. It also includes a residue discharge pipe 15, the input end of which extends into the upper part of the decolorization chamber of the decolorization tank 1, and the input end of the residue discharge pipe 15 is close to its upper end face. Additionally, it includes a concentration detection component and an electronic control unit. The output end of valve 16 and residual pipe 15 is installed on the electrically controlled valve 16. The concentration detection component is installed on the upper part of the decolorization chamber of decolorization tank 1. The concentration detection component is used to detect the concentration of impurities and pigments in the non-natural amino acid solution on the permeation membrane assembly 14. The concentration detection component is electrically connected to the electrically controlled valve 16. The concentration detection component includes a visual detector 17 and a marker plate 18. The visual detector 17 is installed on the top wall of decolorization tank 1, and the marker plate 18 is installed on the permeation membrane assembly 14. The marker plate 18 is located below the detection end of the visual detector 17.

[0028] The non-natural amino acid solution input through inlet pipe 2 falls onto the permeate membrane module 14. The permeate membrane module 14 performs permeate filtration on the non-natural amino acid solution, intercepting and filtering out some impurities and pigments. After passing through the permeate membrane module 14, the non-natural amino acid solution undergoes further adsorption and decolorization by activated carbon particles, improving the decolorization efficiency. The non-natural amino acid solution is filtered and intercepted by the permeate membrane module 14, thus concentrating and enriching impurities and pigments. As the working time of the permeate membrane module 14 increases, the concentration of impurities and pigments in the non-natural amino acid solution on the permeate membrane module 14 gradually increases. The visual detector 17 takes a picture of the marking plate 18. When the permeate membrane module... When the concentration of impurities and pigments in the non-natural amino acid solution on membrane module 14 is low, the image clarity of marker plate 18 is high. When the concentration of impurities and pigments in the non-natural amino acid solution on membrane module 14 is high, the image clarity of marker plate 18 decreases. After working for a period of time, when the clarity of marker plate 18 drops to the set value, it is determined that the concentration of impurities and pigments in the non-natural amino acid solution on membrane module 14 has reached the discharge concentration. The concentration detection component detects and generates an electrical signal. After receiving the electrical signal, the electric control valve 16 opens, allowing the concentrate on membrane module 14 to be discharged through the discharge pipe 15. The concentrate enriched with impurities and pigments is discharged through the discharge pipe 15.

[0029] like Figures 1 to 7As shown, this utility model discloses a decolorization device for a non-natural amino acid solution. During operation, activated carbon particles are first fed into the packing layer between the upper sieve plate 5 and the lower sieve plate 6 through the feeding pipe 4. The non-natural amino acid solution is then fed into the upper part of the decolorization chamber of the decolorization tank 1 through the inlet pipe 2. The non-natural amino acid solution is filtered and intercepted by the permeation membrane assembly 14, thereby concentrating and enriching impurities and pigments. Afterwards, the visual detector 17 photographs the marker plate 18, and the degree of concentration of impurities and pigments in the non-natural amino acid solution is detected by analyzing the image clarity of the marker plate 18. The non-natural amino acid solution, after passing through the filtration layer of the permeation membrane assembly 14, enters the activated carbon particles through the filter holes of the upper sieve plate 5. In the granular packing layer, the pigment components and impurities in the non-natural amino acid solution are adsorbed by the activated carbon particles, thus decolorizing them. The decolorized non-natural amino acid solution passes through the filter holes of the lower sieve plate 6 to the lower part of the decolorization chamber of the decolorization tank 1 and is discharged through the outlet pipe 3. When the concentration value reaches the set value, the electric control valve 16 opens, allowing the concentrate on the permeate membrane assembly 14 to be discharged through the residual discharge pipe 15. Finally, when it is necessary to replace the activated carbon particles, the addition of the non-natural amino acid solution is stopped, the screw conveyor blade 8 rotates, and the activated carbon particles between the lower sieve plate 6 and the upper sieve plate 5 are discharged through the screw feeder 7. Activated carbon particles are then replenished through the feeding pipe 4 to complete the replacement of the activated carbon particles.

[0030] The main functions achieved by this utility model are:

[0031] 1. Replacing activated carbon granules is simpler and requires less stringent sealing processes, which helps improve work efficiency;

[0032] 2. The non-natural amino acid solution that has passed through the permeation membrane module 14 is further decolorized by activated carbon particles, thereby improving the decolorization efficiency of the non-natural amino acid solution.

[0033] 3. It can detect the concentration of non-natural amino acid solutions and automatically discharge high-concentration solutions.

[0034] The non-natural amino acid solution decolorization device of this utility model has common mechanical installation, connection or setting methods, and can be implemented as long as it can achieve its beneficial effect. The decolorization tank 1, inlet pipe 2, outlet pipe 3, feeding pipe 4, upper screen plate 5, lower screen plate 6, screw feeder 7, auger blade 8, lever 11, permeable membrane assembly 14, electric control valve 16, vision detector 17 and marking plate 18 of this utility model are purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0035] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A decolorizing device for a non-natural amino acid solution, comprising a decolorizing tank (1), an inlet pipe (2), and an outlet pipe (3), wherein the decolorizing tank (1) has a decolorizing chamber inside, the inlet pipe (2) is installed at the upper part of the decolorizing tank (1), and the outlet pipe (3) is installed at the lower part of the decolorizing tank (1), and both the inlet pipe (2) and the outlet pipe (3) are connected to the decolorizing chamber of the decolorizing tank (1); characterized in that, It also includes a feeding pipe (4), an upper screen plate (5), a lower screen plate (6), a screw conveyor (7), and auger blades (8). The upper screen plate (5) is installed in the middle of the decolorization chamber of the decolorization tank (1). The lower end of the feeding pipe (4) extends below the upper screen plate (5), and the upper end of the feeding pipe (4) is located outside the decolorization tank (1). The lower screen plate (6) is installed in the middle of the decolorization chamber of the decolorization tank (1), and the lower screen plate (6) is located below the upper screen plate (5). The upper screen plate (5) An activated carbon packing layer is formed between the lower sieve plate (6) and the upper sieve plate (5). The liquid outlet pipe (3) is located below the lower sieve plate (6). The input end of the screw feeder (7) extends between the lower sieve plate (6) and the upper sieve plate (5), and the input end of the screw feeder (7) is close to the lower sieve plate (6). The output end of the screw feeder (7) extends out of the outside of the decolorization tank (1). The screw feeder (7) has a rotating auger blade (8) installed inside. The auger blade (8) is equipped with a rotating shaft and a screw blade.

2. The non-natural amino acid solution decolorization device as described in claim 1, characterized in that, It also includes a cover (9), an arm plate (10), and a lever (11). The cover (9) is rotatably mounted on the outer wall of the input end of the screw feeder (7). Multiple openings are provided on the side wall of the cover (9), and the multiple openings are aligned with the input port of the screw feeder (7). The side wall of the cover (9) closes the input port of the screw feeder (7). Multiple one-way slots are provided in the center of the cover (9) along the circumference. The arm plate (10) is mounted on the rotating shaft of the auger blade (8). The middle part of the lever (11) is elastically hinged to the arm plate (10) through a hinge shaft and a torsion spring assembly. A limiting rod is provided at the inner end of the lever (11), and the limiting rod is blocked by one side wall of the arm plate (10). The outer end of the lever (11) is limited and blocked by the end of the one-way slot of the cover (9).

3. The non-natural amino acid solution decolorization device as described in claim 1, characterized in that, It also includes a flow guide plate (12) and a second outlet pipe (13). The flow guide plate (12) is installed in the lower part of the decolorization chamber of the decolorization tank (1). The flow guide plate (12) is located between the lower sieve plate (6) and the outlet pipe (3). The outer edge of the flow guide plate (12) is connected to the inner wall of the decolorization tank (1). A liquid passage hole is provided in the middle of the flow guide plate (12). The second outlet pipe (13) is installed in the lower part of the decolorization tank (1). The input end of the second outlet pipe (13) extends into the lower part of the decolorization chamber of the decolorization tank (1). The second outlet pipe (13) is located below the outlet pipe (3).

4. The non-natural amino acid solution decolorization device as described in claim 1, characterized in that, It also includes a permeation membrane assembly (14), which is installed in the upper part of the decolorization chamber of the decolorization tank (1). The permeation membrane assembly (14) is located above the upper sieve plate (5). The outer edge of the permeation membrane assembly (14) is connected to the inner wall of the decolorization tank (1), and the inner edge of the permeation membrane assembly (14) is connected to the outer wall of the feed pipe (4).

5. The non-natural amino acid solution decolorization device as described in claim 4, characterized in that, It also includes a discharge pipe (15), the input end of which extends into the upper part of the decolorization chamber of the decolorization tank (1), and the input end of the discharge pipe (15) is close to the upper end face of the discharge pipe (15).

6. The non-natural amino acid solution decolorization device as described in claim 5, characterized in that, It also includes a concentration detection component and an electric control valve (16). The output end of the discharge pipe (15) is installed on the electric control valve (16). The concentration detection component is installed on the upper part of the decolorization chamber of the decolorization tank (1). The concentration detection component is used to detect the concentration of impurities and pigments in the non-natural amino acid solution on the permeation membrane component (14). The concentration detection component is electrically connected to the electric control valve (16).

7. The non-natural amino acid solution decolorization device as described in claim 6, characterized in that, The concentration detection assembly includes a visual detector (17) and a label plate (18). The visual detector (17) is installed on the top wall of the decolorization tank (1), and the label plate (18) is installed on the permeation membrane assembly (14). The label plate (18) is located below the detection end of the visual detector (17).

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