A crude lactic acid automatic decolorization production device

Abstract

The application discloses a kind of crude lactic acid automatic decolorization production device, it is related to the field of crude lactic acid automatic decolorization production, to solve the action of stirring structure in current decolorization device is smaller, part of solution is difficult to contact with decolorization structure fully, make that decolorization efficiency is not enough, need longer time to decolorize complete problem.The both sides of support base upper end are provided with motor support frame, the upper end of motor support frame is installed with driving motor, the output shaft end of driving motor is fixed with driving gear through keyway, the side of driving gear is engaged with driven gear, the driven gear is located on first connecting seat, the front end of driven gear is connected with first rotating rod through shaft, the other end of first rotating rod is connected with second rotating rod through shaft, the other end of second rotating rod is connected with third rotating rod through shaft, third rotating rod is located on third connecting seat, the upper end of second rotating rod is fixed with connecting rod part.

Description

Technical Field

[0001] This invention relates to the field of automatic decolorization production of crude lactic acid, specifically to an automatic decolorization production device for crude lactic acid. Background Technology

[0002] Lactic acid is a widely used organic acid, applicable in brewing, medicine, leather, cigarettes, chemicals, food, printing and dyeing, and many other fields. In Japan, the approximate distribution of lactic acid usage is: brewing (about 20%), food (about 50%), lactic acid derivatives (about 10%), and leather and other industrial applications (about 20%). The brewing industry uses approximately 80% lactic acid; adding lactic acid prevents the growth of unwanted microorganisms, promotes yeast development, prevents turbidity in wine, enhances its flavor, and can also increase the yield. The food industry generally uses 50% lactic acid, primarily in lactic acid beverages, soft drinks, pastries, pickles, and as an acidulant. In the pharmaceutical industry, lactic acid can be directly formulated into drugs or used to make lactate salts; it can be taken internally for intestinal disinfection and is particularly sensitive to the corrosive effects on diseased tissues, and can also be used for astringent sterilization. Leather products generally contain 40% lactic acid; the quality requirements for lactic acid are not high, and dark-colored and odorous lactic acid is acceptable. Industrial methods for producing lactic acid mainly include fermentation, acetaldehyde, and acrylonitrile.

[0003] The production process requires the preparation of a lactic acid solution, which then undergoes decolorization, impurity removal, concentration, ion exchange, and purification to obtain refined lactic acid. The decolorization step mainly involves placing the solution in a container and using a stirring function to bring the solution into contact with activated carbon, thereby completing the decolorization. However, the stirring mechanism inside the decolorization device operates relatively slowly, making it difficult for some solutions to fully contact the decolorization structure, resulting in insufficient decolorization efficiency and requiring a longer decolorization time to complete. Therefore, there is an urgent market need to develop an automatic decolorization production device for crude lactic acid to help people solve the existing problems. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic decolorization production device for crude lactic acid, in order to solve the problem mentioned in the background art that the internal stirring structure of the current decolorization device has a small movement, and some solutions are difficult to fully contact with the decolorization structure, resulting in insufficient decolorization efficiency and requiring a longer time to complete the decolorization.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic decolorization production device for crude lactic acid, comprising a supporting base plate, motor support frames provided on both sides of the upper end of the supporting base plate, a drive motor mounted on the upper end of the motor support frames, a drive gear fixed to the output shaft end of the drive motor via a keyway, a driven gear meshing with one side of the drive gear, the driven gear being located on a first connecting seat, a first rotating rod connected to the front end of the driven gear via a shaft, a second rotating rod connected to the other end of the first rotating rod via a shaft, a third rotating rod connected to the other end of the second rotating rod via a shaft, the third rotating rod being located on a third connecting seat, a connecting rod portion fixed to the upper end of the second rotating rod, the connecting rod portion being inclined, a second connecting seat connected to the other end of the connecting rod portion via a shaft, and a protective shell welded to the upper ends of the two second connecting seats.

[0006] Preferably, a decolorizing column is provided in the middle inside the protective shell, and a decolorizing unit is provided inside the protective shell along the outside of the decolorizing column. The decolorizing unit includes a first side connecting ring, a second side connecting ring, and a middle decolorizing ring. Multiple middle decolorizing rings are provided. The first side connecting ring, the second side connecting ring, and the multiple middle decolorizing rings are spaced at the same distance. A decolorizing body is provided at the upper end of the right side and the lower end of the left side of the middle decolorizing ring. A one-way flow component is provided inside the middle decolorizing ring. The output end of the one-way flow component is in contact with the decolorizing body. An upper chamber and a lower chamber are formed between the first side connecting ring, the second side connecting ring, and the multiple middle decolorizing rings and the decolorizing column. A liquid inlet pipe is installed on one side of the upper end of the protective shell. One end of the liquid inlet pipe extends into the upper chamber on one side. The lower end of the front end of the outer side of the protective shell is connected to a liquid collecting pipe through a branch pipe. The end of the branch pipe away from the liquid collecting pipe extends through the protective shell into the lower chamber. A drain pipe is connected to the liquid collecting pipe through a tee.

[0007] Preferably, a circular slot is provided in the middle of the first side connecting ring, the second side connecting ring, and the middle decolorizing ring. A limit ring is welded to one side of the inside of the protective shell. Connecting rods are fixed at both ends of the first side connecting ring, the second side connecting ring, and the plurality of middle decolorizing rings.

[0008] Preferably, the unidirectional flow assembly includes a first housing and a second housing, the first housing being located on one side of the second housing and the first housing and the second housing being fixed together. A liquid inlet is provided in the middle of the outer side of the first housing, and a liquid outlet is provided in the middle of the outer side of the second housing. An inner fixing ring is fixed on the inner side of the connection position between the first housing and the second housing. The interior of the first housing is configured as a first flow cavity, and a first sealing plate is provided inside the first flow cavity. A pressure spring is fixed between the first sealing plate and the inner fixing ring.

[0009] Preferably, a connecting post is provided between the first sealing disc and the inner fixing ring along the inside of the pressure spring. The connecting post is fixed to the first sealing disc, and a second sealing disc is fixed to the other end of the connecting post. The inner fixing ring is configured as a second flow cavity, and the inside of the second housing is configured as a third flow cavity. The second sealing disc is located in the third flow cavity. The inner diameters of the second flow cavity, the third flow cavity, and the first flow cavity gradually increase. The diameter of the first sealing disc is larger than the diameter of the inlet hole, smaller than the diameter of the first flow cavity, larger than the diameter of the second flow cavity, larger than the diameter of the outlet hole, larger than the diameter of the second flow cavity, smaller than the diameter of the third flow cavity, and the diameter of the connecting post is smaller than the diameter of the second flow cavity.

[0010] Preferably, a first side mounting plate is provided on one side of the protective housing, and a second side mounting plate is provided on the other side of the protective housing. Fixing outer rings are welded to both sides of the outer surface of the protective housing. The two fixing outer rings are respectively attached to the first side mounting plate and the second side mounting plate. The two sides of the protective housing are embedded in the first side mounting plate and the second side mounting plate. The first side mounting plate and the second side mounting plate are fixed to the fixing outer rings by fixing bolts. A connecting pipe is welded to the outer side of the first side mounting plate.

[0011] Preferably, a sealing cavity is provided on the side of the decolorizing column near the first mounting plate, a second sealing ring is provided in the sealing cavity, a primary sealing cover is threadedly connected to the connecting pipe, a fixing ring is provided on the primary sealing cover, the fixing ring is embedded in the sealing cavity, and the decolorizing column is threadedly connected to the first mounting plate through the connecting threaded pipe.

[0012] Preferably, a secondary sealing cap is threaded to the outside of the connecting pipe, the connecting pipe is embedded in the secondary sealing cap, and a first sealing ring is provided inside the secondary sealing cap along the outside of the connecting pipe.

[0013] Preferably, a sampling tube is installed at the lower end of the outer side of the second side mounting plate, and one end of the sampling tube extends into the interior of the protective housing.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. In this invention, a drive motor drives a drive gear to rotate. Under the meshing action of the drive gear and the driven gear, the driven gear rotates synchronously in the opposite direction with reduced speed, driving the first rotating rod to rotate. Since the first, second, and third rotating rods are connected by a shaft, the second and third rotating rods rotate synchronously. The connecting shaft between the connecting rod and the second connecting seat rotates along a "quasi-elliptical" trajectory, and the entire protective shell rotates along a "quasi-elliptical" trajectory, thus driving the entire solution to move. The solution moves significantly within the device, solving the problem that the stirring structure inside current decolorization devices has limited movement, making it difficult for some solutions to fully contact the decolorization structure, resulting in insufficient decolorization efficiency and requiring a longer decolorization time.

[0016] 2. In this invention, as the drive motor operates, when the protective housing rotates counterclockwise from the lower end to the upper end, the internal solution moves to the right due to inertia. Because a middle decolorizing ring is located on the right side, the solution is blocked by the middle decolorizing ring. A one-way flow component is installed on the middle decolorizing ring, and the upper and lower one-way flow components are positioned in opposite directions. Therefore, the solution at the upper end flows to the right through the one-way flow component, while the solution at the lower end does not flow. (When the flow direction is opposite to the direction of the one-way flow component, the solution enters the first housing through the inlet hole, squeezing the first sealing plate. The pressure spring deforms under pressure, and the connecting column drives the second sealing plate to move synchronously. Finally, the first sealing plate moves away from the inlet hole, and the second sealing plate moves away from the second flow cavity, thus reconnecting the first and second flow cavities.) The moving chamber and the third flow chamber are connected to allow the solution to flow. When the solution velocity is too high and the pressure on the first sealing plate is too great, the pressure spring is fully compressed. The first sealing plate blocks one end of the second flow chamber, and the second sealing plate blocks the outlet hole, preventing the solution with excessively high velocity from contacting the decolorizing body and causing incomplete decolorization. When the flow direction is opposite to that of the one-way flow component, the first sealing plate blocks the inlet hole, and the second sealing plate blocks the other end, separating the first, second, and third flow chambers (two-step sealing to prevent solution flow). When the protective shell rotates counterclockwise from the top to the bottom, the internal solution moves to the left due to inertia. The solution at the bottom flows to the left through the one-way flow component, while the solution at the top does not flow. The outlet hole of the one-way flow component corresponds to the decolorizing body, and the solution passing through the one-way flow component will inevitably pass through the decolorizing body for decolorization. Because the decolorizing unit has a decolorizing column inside its circular slot, some solution can freely flow through the column into the chamber separated from the decolorizing unit. However, the solution flowing through the column will inevitably be decolorized, achieving full contact between the solution and the decolorizing structure, and applying a certain flow force, thus reducing the decolorization time. Through the cooperation of the external driving structure with the decolorizing unit and the decolorizing column, the internal solution has sufficient contact with both the unit and the column. Repeated contact between the solution and the decolorizing structure improves decolorization efficiency. Attached Figure Description

[0017] Figure 1 This is a front view of an automatic decolorization production apparatus for crude lactic acid according to the present invention;

[0018] Figure 2 This is a cross-sectional view of the connection portion of the first side mounting plate, the secondary sealing cover, the protective shell, and the second side mounting plate in an automatic crude lactic acid decolorization production device of the present invention.

[0019] Figure 3 This is an exploded view of the structure of the first side mounting plate, the secondary sealing cover, the first sealing ring, the primary sealing cover, the fixing ring and the second sealing ring of the automatic decolorizing production device for crude lactic acid of the present invention.

[0020] Figure 4 This is a cross-sectional view of the internal structure of the protective shell of an automatic crude lactic acid decolorization production device according to the present invention;

[0021] Figure 5 This is a schematic diagram of the overall structure of the decolorization unit of an automatic decolorization production device for crude lactic acid according to the present invention;

[0022] Figure 6 This is a schematic diagram showing the working state changes of a unidirectional flow component in an automatic crude lactic acid decolorization production device according to the present invention.

[0023] In the diagram: 1. First side mounting plate; 2. Connecting pipe; 3. Secondary sealing cover; 4. First sealing ring; 5. Primary sealing cover; 6. Fixing ring; 7. Second sealing ring; 8. Protective shell; 9. Fixing outer ring; 10. Fixing bolt; 11. Liquid inlet pipe; 12. Limiting ring; 13. Second side mounting plate; 14. Sampling pipe; 15. Decolorizing column; 16. Connecting threaded pipe; 17. Sealing cavity; 18. Decolorizing unit; 19. First side connecting ring; 20. Intermediate decolorizing ring; 21. Second side connecting ring; 22. Connecting rod; 23. Circular slot; 24. Decolorizing body; 25. One-way flow assembly; 6. First housing; 27. Inner fixing ring; 28. Second housing; 29. ​​Liquid inlet; 30. Liquid outlet; 31. First flow chamber; 32. Second flow chamber; 33. Third flow chamber; 34. First sealing plate; 35. Pressure spring; 36. Connecting column; 37. Second sealing plate; 38. Liquid collecting pipe; 39. Liquid drain pipe; 40. Support base plate; 41. Drive motor; 42. Driven gear; 43. Drive gear; 44. First connecting seat; 45. First rotating rod; 46. Second rotating rod; 47. Connecting rod part; 48. Second connecting seat; 49. Third rotating rod; 50. Third connecting seat. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Please see Figure 1-6 An embodiment of the present invention provides an automatic decolorization production device for crude lactic acid, comprising a supporting base plate 40, motor support frames provided on both sides of the upper end of the supporting base plate 40, a drive motor 41 mounted on the upper end of the motor support frames, a drive gear 43 fixed to the output shaft end of the drive motor 41 via a keyway, a driven gear 42 meshing with one side of the drive gear 43, the driven gear 42 being located on a first connecting seat 44, a first rotating rod 45 being connected to the front end of the driven gear 42 via a shaft, a second rotating rod 46 being connected to the other end of the first rotating rod 45 via a shaft, a third rotating rod 49 being connected to the other end of the second rotating rod 46 via a shaft, the third rotating rod 49 being located on a third connecting seat 50, a connecting rod portion 47 being fixed to the upper end of the second rotating rod 46, the connecting rod portion 47 being inclined, a second connecting seat 48 being connected to the other end of the connecting rod portion 47 via a shaft, and a protective shell 8 being welded and fixed to the upper ends of the two second connecting seats 48. The drive motor 41 drives the drive gear 43 to rotate. Under the meshing action of the drive gear 43 and the driven gear 42, the driven gear 42 rotates synchronously in the opposite direction with reduced speed, driving the first rotating rod 45 to rotate. Since the first rotating rod 45, the second rotating rod 46 and the third rotating rod 49 are connected by a shaft, the second rotating rod 46 and the third rotating rod 49 rotate synchronously. The connecting shaft position of the connecting rod part 47 and the second connecting seat 48 rotates along an "elliptical" trajectory. The entire protective shell 8 rotates along an "elliptical" trajectory, which drives the entire solution to move.

[0026] Furthermore, a decolorizing column 15 is provided in the middle inside the protective housing 8, and a decolorizing unit 18 is provided inside the protective housing 8 along the outside of the decolorizing column 15. The decolorizing unit 18 includes a first side connecting ring 19, a second side connecting ring 21, and multiple intermediate decolorizing rings 20. A circular slot 23 is provided in the middle of each of the first side connecting ring 19, the second side connecting ring 21, and the multiple intermediate decolorizing rings 20. A limiting ring 12 is welded to one side inside the protective housing 8. When the decolorizing unit 18 is placed inside the protective housing 8, the limiting ring 12 acts as a limiting device. Connecting rods 22 are fixed at both ends of the intermediate decolorizing rings 20. The first side connecting ring 19, the second side connecting ring 21, and the multiple intermediate decolorizing rings 20 are spaced equidistantly. A decolorizing body 24 is provided at the upper end of the right side and the lower end of the left side of the intermediate decolorizing ring 20. A one-way flow component 25 is provided inside the intermediate decolorizing ring 20. The output end of the one-way flow component 25 is in contact with the decolorizing body 24. The upper and lower one-way flow components 25 are set in opposite directions. Therefore, the solution at the upper end flows to the right through the one-way flow component 25, while the solution at the lower end does not flow; the solution at the lower end flows to the left through the one-way flow component 25, while the solution at the upper end does not flow. The position of the outlet hole 30 of the one-way flow component 25 corresponds to the decolorizing body 24. The solution passing through the one-way flow component 25 will definitely pass through the decolorizing body 24 for decolorization. The first side connecting ring 19, the second side connecting ring 21, and multiple intermediate decolorizing rings 20 form an upper chamber and a lower chamber with the decolorizing column 15. An inlet pipe 11 is installed on one side of the upper end of the protective shell 8. One end of the inlet pipe 11 extends into the upper chamber on one side. The lower end of the outer front end of the protective shell 8 is connected to a collection pipe 38 through a branch pipe. The end of the branch pipe away from the collection pipe 38 extends through the protective shell 8 into the lower chamber. A drain pipe 39 is connected to the collection pipe 38 through a tee.

[0027] Furthermore, the unidirectional flow assembly 25 includes a first housing 26 and a second housing 28. The first housing 26 is located on one side of the second housing 28, and the first housing 26 and the second housing 28 are fixed together. A liquid inlet 29 is provided in the middle of the outer side of the first housing 26, and a liquid outlet 30 is provided in the middle of the outer side of the second housing 28. An inner fixing ring 27 is fixed inside the connection between the first housing 26 and the second housing 28. The interior of the first housing 26 is configured as a first flow cavity 31, and a first sealing disc 34 is provided inside the first flow cavity 31. A pressure spring 35 is fixed between the first sealing disc 34 and the inner fixing ring 27. A connecting post 36 is provided along the inside of the pressure spring 35 between the first sealing disc 34 and the inner fixing ring 27. The connecting post 36 is fixed to the first sealing disc 34. The other end is fixed with a second sealing disc 37. The inner fixed ring 27 is configured with a second flow cavity 32. The interior of the second housing 28 is configured with a third flow cavity 33. The second sealing disc 37 is located in the third flow cavity 33. The inner diameters of the second flow cavity 32, the third flow cavity 33 and the first flow cavity 31 gradually increase. The diameter of the first sealing disc 34 is larger than the diameter of the liquid inlet 29. The diameter of the first sealing disc 34 is smaller than the diameter of the first flow cavity 31. The diameter of the first sealing disc 34 is larger than the diameter of the second flow cavity 32. The diameter of the second sealing disc 37 is larger than the diameter of the liquid outlet 30. The diameter of the second sealing disc 37 is larger than the diameter of the second flow cavity 32. The diameter of the second sealing disc 37 is smaller than the diameter of the third flow cavity 33. The diameter of the connecting column 36 is smaller than the diameter of the second flow cavity 32.

[0028] When the flow direction is opposite to that of the one-way flow component 25, the solution enters the first housing 26 through the inlet hole 29, squeezing the first sealing plate 34. The pressure spring 35 deforms under force, and the connecting column 36 drives the second sealing plate 37 to move synchronously. Finally, the first sealing plate 34 moves away from the inlet hole 29, and the second sealing plate 37 moves away from the second flow cavity 32. The first flow cavity 31, the second flow cavity 32, and the third flow cavity 33 are connected to realize the flow of the solution. When the speed of the solution is too fast and the pressure on the first sealing plate 34 is too great, the pressure spring 35 is fully compressed. The first sealing plate 34 blocks one end of the second flow cavity 32, and the second sealing plate 37 blocks the outlet hole 30 to prevent the solution with excessive speed from contacting the decolorizing body 24 and causing incomplete decolorization. When the flow direction is opposite to that of the unidirectional flow component 25, the first sealing plate 34 blocks the liquid inlet 29, and the second sealing plate 37 blocks the other end. The first flow chamber 31, the second flow chamber 32 and the third flow chamber 33 are separated, and the two-step sealing is used to prevent the solution from flowing.

[0029] Furthermore, a first mounting plate 1 is provided on one side of the protective housing 8, and a second mounting plate 13 is provided on the other side of the protective housing 8. Fixing outer rings 9 are welded to both sides of the outer surface of the protective housing 8, and the two fixing outer rings 9 are respectively fitted to the first mounting plate 1 and the second mounting plate 13. The two sides of the protective housing 8 are embedded in the first mounting plate 1 and the second mounting plate 13. The first mounting plate 1 and the second mounting plate 13 are fixed to the fixing outer rings 9 by fixing bolts 10. A connecting pipe 2 is welded to the outer side of the first mounting plate 1; a sealing cavity 1 is provided on the side of the decolorizing column 15 near the first mounting plate 1. 7. A second sealing ring 7 is provided in the sealing cavity 17. A primary sealing cover 5 is connected to the connecting pipe 2 by threads. A fixing ring 6 is provided on the primary sealing cover 5. The fixing ring 6 is embedded in the sealing cavity 17. The decolorizing column 15 is threaded to the first side mounting plate 1 by the connecting threaded pipe 16. A secondary sealing cover 3 is threaded to the outside of the connecting pipe 2. The connecting pipe 2 is embedded in the secondary sealing cover 3. A first sealing ring 4 is provided inside the secondary sealing cover 3 along the outside of the connecting pipe 2. A sampling tube 14 is installed at the lower end of the outside of the second side mounting plate 13. One end of the sampling tube 14 extends into the interior of the protective shell 8.

[0030] After the work is completed, open the control valve on sampling tube 14 and observe whether the outflowing solution meets the requirements. If it does not meet the requirements, close the control valve on sampling tube 14 and decolorize again. If it meets the requirements, close the control valve on sampling tube 14, open the control valve on drain tube 39, and extract the decolorized solution through external equipment.

[0031] Working principle: The solution is added to the protective housing 8 through the inlet pipe 11, and the control valve on the inlet pipe 11 (not shown in the figure) is closed to start the decolorization process.

[0032] The drive motor 41 drives the drive gear 43 to rotate. Under the meshing action of the drive gear 43 and the driven gear 42, the driven gear 42 rotates synchronously in the opposite direction with reduced speed, driving the first rotating rod 45 to rotate. Since the first rotating rod 45, the second rotating rod 46 and the third rotating rod 49 are connected by a shaft, the second rotating rod 46 and the third rotating rod 49 rotate synchronously. The connecting shaft position of the connecting rod part 47 and the second connecting seat 48 rotates along an "elliptical" trajectory. The entire protective shell 8 rotates along an "elliptical" trajectory, which drives the entire solution to move.

[0033] When the protective shell 8 rotates counterclockwise from the lower end to the upper end, the internal solution moves to the right due to inertia. Because a middle decolorizing ring 20 is located on the right side, the solution is blocked by the middle decolorizing ring 20. A one-way flow component 25 is located on the middle decolorizing ring 20, and the upper and lower one-way flow components 25 are positioned in opposite directions. Therefore, the solution at the upper end flows to the right through the one-way flow component 25, while the solution at the lower end does not flow. (When the flow direction is opposite to that of the one-way flow component 25, the solution enters the first shell 26 through the inlet hole 29, squeezing the first sealing disc 34. The pressure spring 35 deforms under pressure, and the connecting column 36 drives the second sealing disc 37 to move synchronously. Finally, the first sealing disc 34 moves away from the inlet hole 29, and the second sealing disc 37 moves away from the second flow cavity 32. The first flow cavity 31, the second flow cavity 32, and the third flow cavity...) The moving cavity 33 is connected to allow the solution to flow. When the solution speed is too fast and the pressure on the first sealing plate 34 is too high, the pressure spring 35 is fully compressed. The first sealing plate 34 blocks one end of the second flow cavity 32, and the second sealing plate 37 blocks the outlet hole 30 to prevent the solution with excessive speed from contacting the decolorizing body 24 and causing incomplete decolorization. When the flow direction is opposite to that of the one-way flow component 25, the first sealing plate 34 blocks the inlet hole 29, and the second sealing plate 37 blocks the other end. The first flow cavity 31, the second flow cavity 32, and the third flow cavity 33 are separated (two-step sealing to prevent solution flow). When the protective shell 8 rotates counterclockwise from the top to the bottom, the solution inside moves to the left due to inertia. The solution at the bottom flows to the left through the one-way flow component 25, while the solution at the top does not flow. The outlet hole 30 of the one-way flow component 25 corresponds to the decolorizing body 24, and the liquid will definitely be decolorized by passing through the decolorizing body 24 after passing through the one-way flow component 25.

[0034] Since the decolorizing column 15 is provided in the circular slot 23 of the decolorizing unit 18, some solution can freely flow through the decolorizing column 15 into the chamber separated between the decolorizing unit 18 and the decolorizing column 15. However, the solution flowing through the decolorizing column 15 will definitely be decolorized by the decolorizing column 15, so as to achieve full contact between the solution and the decolorizing structure and apply a certain flow force, thereby reducing the decolorization time.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatic decolorization production device for crude lactic acid, comprising a supporting base plate (40), characterized in that: Motor support frames are provided on both sides of the upper end of the support base plate (40). A drive motor is installed on the upper end of the motor support frame. A drive gear is fixed to the output shaft end of the drive motor through a keyway. A driven gear is meshed with one side of the drive gear. The driven gear is located on the first connecting seat. A first rotating rod is connected to the front end of the driven gear through a shaft. A second rotating rod (46) is connected to the other end of the first rotating rod through a shaft. A third rotating rod (49) is connected to the other end of the second rotating rod (46) through a shaft. The third rotating rod (49) is located on the third connecting seat (50). A connecting rod part (47) is fixed to the upper end of the second rotating rod (46). The connecting rod part (47) is inclined. A second connecting seat (48) is connected to the other end of the connecting rod part (47) through a shaft. A protective shell (8) is welded and fixed to the upper ends of the two second connecting seats (48). A decolorizing column (15) is provided in the middle inside the protective shell (8). A decolorizing unit (18) is provided inside the protective shell (8) along the outside of the decolorizing column (15). The decolorizing unit (18) includes a first side connecting ring (19), a second side connecting ring (21), and a middle decolorizing ring (20). Multiple middle decolorizing rings (20) are provided. The first side connecting ring (19), the second side connecting ring (21), and the multiple middle decolorizing rings (20) are spaced at the same distance. A decolorizing body (24) is provided at the upper end of the right side and the lower end of the left side of the middle decolorizing ring (20). A one-way flow component is provided inside the middle decolorizing ring (20). 25), the output end of the one-way flow component (25) contacts the decolorizing body (24), the first side connecting ring (19), the second side connecting ring (21) and the multiple intermediate decolorizing rings (20) form an upper chamber and a lower chamber between the decolorizing column (15), an inlet pipe (11) is installed on one side of the upper end of the protective shell (8), one end of the inlet pipe (11) extends into the upper chamber on one side, the lower end of the outer front end of the protective shell (8) is connected to a collection pipe (38) through a branch pipe, the end of the branch pipe away from the collection pipe (38) passes through the protective shell (8) and extends into the lower chamber, and a drain pipe (39) is connected to the collection pipe (38) through a tee.

2. The automatic decolorization production device for crude lactic acid according to claim 1, characterized in that: A circular slot (23) is provided in the middle of the first side connecting ring (19), the second side connecting ring (21) and the middle decolorizing ring (20). A limit ring (12) is welded to one side inside the protective shell (8). A connecting rod (22) is fixed at both ends of the first side connecting ring (19), the second side connecting ring (21) and the multiple middle decolorizing rings (20).

3. The automatic decolorization production device for crude lactic acid according to claim 1, characterized in that: The unidirectional flow assembly (25) includes a first housing (26) and a second housing (28). The first housing (26) is located on one side of the second housing (28). The first housing (26) and the second housing (28) are fixed together. An inlet hole (29) is provided in the middle of the outer side of the first housing (26). An outlet hole (30) is provided in the middle of the outer side of the second housing (28). An inner fixing ring (27) is fixed on the inner side of the connection position between the first housing (26) and the second housing (28). The interior of the first housing (26) is configured as a first flow cavity (31). A first sealing plate (34) is provided inside the first flow cavity (31). A pressure spring (35) is fixed between the first sealing plate (34) and the inner fixing ring (27).

4. The automatic decolorization production device for crude lactic acid according to claim 3, characterized in that: A connecting post (36) is provided between the first sealing disc (34) and the inner fixing ring (27) along the inside of the pressure spring (35). The connecting post (36) is fixed to the first sealing disc (34). The other end of the connecting post (36) is fixed to a second sealing disc (37). The inner fixing ring (27) is configured with a second flow cavity (32). The inside of the second housing (28) is configured with a third flow cavity (33). The second sealing disc (37) is located in the third flow cavity (33). The second flow cavity (32), the third flow cavity (33), and the first flow cavity (31) are all connected. The inner diameter gradually increases, the diameter of the first sealing plate (34) is larger than the diameter of the inlet hole (29), the diameter of the first sealing plate (34) is smaller than the diameter of the first flow cavity (31), the diameter of the first sealing plate (34) is larger than the diameter of the second flow cavity (32), the diameter of the second sealing plate (37) is larger than the diameter of the outlet hole (30), the diameter of the second sealing plate (37) is larger than the diameter of the second flow cavity (32), the diameter of the second sealing plate (37) is smaller than the diameter of the third flow cavity (33), and the diameter of the connecting column (36) is smaller than the diameter of the second flow cavity (32).

5. The automatic decolorization production device for crude lactic acid according to claim 1, characterized in that: A first side mounting plate (1) is provided on one side of the protective housing (8), and a second side mounting plate (13) is provided on the other side of the protective housing (8). Fixing outer rings (9) are welded to both sides of the outer side of the protective housing (8). The two fixing outer rings (9) are respectively attached to the first side mounting plate (1) and the second side mounting plate (13). The two sides of the protective housing (8) are embedded in the first side mounting plate (1) and the second side mounting plate (13). The first side mounting plate (1) and the second side mounting plate (13) are fixed to the fixing outer rings (9) by fixing bolts (10). A connecting pipe (2) is welded to the outer side of the first side mounting plate (1).

6. The automatic decolorization production device for crude lactic acid according to claim 5, characterized in that: The decolorizing column (15) has a sealing cavity (17) on the side near the first side mounting plate (1). A second sealing ring (7) is provided in the sealing cavity (17). A primary sealing cover (5) is connected to the connecting pipe (2) by a thread. A fixing ring (6) is provided on the primary sealing cover (5). The fixing ring (6) is embedded in the sealing cavity (17). The decolorizing column (15) is threaded to the first side mounting plate (1) through a connecting threaded pipe (16).

7. The automatic decolorization production device for crude lactic acid according to claim 5, characterized in that: The outer side of the connecting pipe (2) is connected to a secondary sealing cap (3) by a thread. The connecting pipe (2) is embedded in the secondary sealing cap (3). A first sealing ring (4) is provided inside the secondary sealing cap (3) along the outer side of the connecting pipe (2).

8. The automatic decolorization production device for crude lactic acid according to claim 5, characterized in that: A sampling tube (14) is installed at the lower end of the outer side of the second side mounting plate (13), and one end of the sampling tube (14) extends into the interior of the protective housing (8).

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