Separation and purification equipment for lactic acid fermentation production

Abstract

The utility model discloses separation and purification equipment for lactic acid fermentation production, which relates to the technical field of lactic acid production and comprises a water pump, one end of a water inlet of the water pump is fixedly communicated with a pretreatment box, a probe is electrically connected with a control panel, and a connecting piece can be connected with an electric push rod and the probe. When the electric push rod is used for driving the connecting piece and the probe to ascend and descend, the bottom of the probe is inserted into the liquid level to detect the pH value of lactic acid feed liquid, the bevel gear I and the rotating disc are driven by the bevel gear II to rotate, the position of the liquid storage hopper is changed, a solution in the liquid storage hopper is fed into the pretreatment box, the pH value of the feed liquid can be adjusted, and the pH value of the feed liquid is kept within a preset range. Interference on ion exchange and protein precipitation is reduced, the follow-up separation and purification effect of lactic acid is guaranteed, waste liquid can be fed into the recycling barrel through the waste liquid pipe, metal ions in the waste liquid can be recycled through the filter screen and the filter membrane assembly, and therefore resource waste caused by direct discharge of the waste liquid is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lactic acid production, in particular to separation and purification equipment for lactic acid fermentation production. Background Art

[0002] In addition to the target product, lactic acid, lactic acid fermentation broth also contains impurities such as unused raw materials, microbial cells, metabolites, proteins, pigments, etc. Separation and purification equipment can effectively remove these impurities and improve the purity and quality of lactic acid.

[0003] The existence form of lactic acid is closely related to the pH value. When the pH value of the lactic acid liquid is too high, the ion exchange effect decreases during the separation process, affecting the separation effect of lactic acid. When the pH value is too low, the corrosion of the liquid on the equipment is aggravated, and the precipitation of impurities such as protein is more difficult, which interferes with the separation and purification effect of lactic acid. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art that when the pH value of the lactic acid feed liquid is too high, the ion exchange effect decreases during the separation process; when the pH value is too low, the corrosion of the feed liquid on the equipment is aggravated, the precipitation of impurities such as protein is more difficult, and the separation and purification effect of lactic acid is interfered with. A separation and purification device for lactic acid fermentation production is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a separation and purification equipment for lactic acid fermentation production, comprising a water pump, one end of the water inlet of the water pump is fixedly connected to a pretreatment tank, the top of the pretreatment tank is fixedly connected to the water pump, a pretreatment mechanism is provided on one side of the water pump, the pretreatment mechanism comprises a liquid storage hopper, a probe and an electric push rod, the bottom of the liquid storage hopper is fixedly connected to a discharge pipe, the discharge pipe is inserted through the turntable, the bottom of the turntable is fixedly connected to a bevel gear 1, the bottom of the bevel gear 1 is rotatably connected to the pretreatment tank, one side of the bevel gear 1 is meshed with a bevel gear 2, one side of the bevel gear 2 is fixedly connected to the output shaft of motor 2, the motor 2 is embedded in the top of the pretreatment tank, the top of the pretreatment tank is fixedly connected to a control panel, the control panel is electrically connected to the probe, the top of the probe is fixedly connected to a connecting piece, the top of the connecting piece is fixedly connected to the electric push rod, and the top of the electric push rod is fixedly connected to the pretreatment tank.

[0006] Preferably, a feeding port is provided on the top of the pretreatment box, and the pretreatment box is rotationally connected to the second bevel gear.

[0007] Preferably, a motor 1 is fixedly connected to the top of the pretreatment box, a stirring rod is fixedly connected to one end of the output shaft of the motor 1, and the stirring rod is rotationally connected to the pretreatment box.

[0008] Preferably, one end of the water outlet of the water pump is fixedly connected to a connecting pipe, and the bottom of the connecting pipe is fixedly connected to an ion exchanger.

[0009] Preferably, the bottom of the ion exchanger is fixedly connected to a water outlet pipe, and the water outlet pipe is L-shaped.

[0010] Preferably, one side of the ion exchanger is fixedly connected to a waste liquid pipe, a recovery cylinder is plugged into the bottom of the waste liquid pipe, and one side of the recovery cylinder is fixedly connected to a drain pipe.

[0011] Preferably, a filter screen is engaged with the inner wall of the recovery cylinder, a filter membrane assembly is provided at the bottom of the filter screen, and one side of the filter membrane assembly is engaged and connected with the inner wall of the recovery cylinder.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the present invention, an electrical connection is adopted between the probe and the control panel. The connector can connect the electric push rod and the probe. When the electric push rod is used to drive the connector and the probe to rise and fall, the bottom of the probe is inserted into the liquid surface to detect the pH value of the lactic acid liquid. The bevel gear 1 and the turntable are driven to rotate by the bevel gear 2 to change the position of the liquid storage hopper, and the solution in the liquid storage hopper is sent to the pretreatment box. The pH value of the liquid can be adjusted to keep the pH value of the liquid within a predetermined range, thereby reducing interference with ion exchange and protein precipitation and ensuring the subsequent separation and purification effect of lactic acid.

[0014] 2. In the utility model, one end of the connecting pipe is fixedly connected to the ion exchanger, and the ion exchanger is connected to the recovery drum through the waste liquid pipe. The lactic acid liquid can be sent into the ion exchanger for ion exchange by using a water pump, and the treated waste liquid can be sent to the recovery drum through the waste liquid pipe. The metal ions in the waste liquid can be recovered by using the filter screen and filter membrane assembly, thereby avoiding the waste of resources caused by the direct discharge of the waste liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a separation and purification device for lactic acid fermentation production proposed by the utility model;

[0016] Figure 2 This utility model provides a schematic diagram of the installation of a filter structure for a separation and purification device for lactic acid fermentation production;

[0017] Figure 3 This utility model provides a schematic diagram of the installation of a stirring rod structure for a separation and purification device for lactic acid fermentation production;

[0018] Figure 4 The utility model provides a schematic diagram of the meshing structure of bevel gear 1 and bevel gear 2 of a separation and purification equipment for lactic acid fermentation production.

[0019] Legend: 1. Liquid storage hopper; 2. Pretreatment tank; 3. Ion exchanger; 4. Recovery cylinder; 5. Connecting pipe; 6. Filter membrane assembly; 7. Filter screen; 8. Waste liquid pipe; 9. Water pump; 10. Stirring rod; 11. Probe; 12. Connecting piece; 13. Electric push rod; 14. Motor 1; 15. Turntable; 16. Feeding pipe; 17. Bevel gear 1; 18. Bevel gear 2; 19. Motor 2; 20. Control panel; 21. Water outlet pipe. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: Reference Figure 1-Figure 4 As shown: A separation and purification equipment for lactic acid fermentation production, including a water pump 9, one end of the water inlet of the water pump 9 is fixedly connected to a pretreatment tank 2, the top of the pretreatment tank 2 is fixedly connected to the water pump 9, and a pretreatment mechanism is provided on one side of the water pump 9, the pretreatment mechanism includes a liquid storage bucket 1, a probe 11 and an electric push rod 13, the bottom of the liquid storage bucket 1 is fixedly connected to a discharge pipe 16, the discharge pipe 16 is inserted through the turntable 15, the bottom of the turntable 15 is fixedly connected to a bevel gear 17, the bottom of the bevel gear 17 is rotatably connected to the pretreatment tank 2, one side of the bevel gear 17 is meshed with a bevel gear 2 18, and one side of the bevel gear 2 18 is fixedly connected to a motor 2 The output shaft of 19, the motor 2 19 is engaged with the top of the pretreatment box 2, the top of the pretreatment box 2 is fixedly connected to the control panel 20, the control panel 20 is electrically connected to the probe 11, the top of the probe 11 is fixedly connected to the connector 12, the top of the connector 12 is fixedly connected to the electric push rod 13, the top of the electric push rod 13 is fixedly connected to the pretreatment box 2, a feeding port is provided at the top of the pretreatment box 2, the pretreatment box 2 is rotationally connected to the bevel gear 2 18, the top of the pretreatment box 2 is fixedly connected to the motor 14, one end of the output shaft of the motor 14 is fixedly connected to the stirring rod 10, and the stirring rod 10 is rotationally connected to the pretreatment box 2.

[0023] The pretreatment box 2 can be used to support the bevel gear 17 and the motor 2 19, and the motor 2 19 can provide power for the rotation of the bevel gear 2 18, thereby driving the bevel gear 2 18 to rotate stably, and then the engagement of the bevel gear 2 18 with the bevel gear 1 17 drives the bevel gear 17 and the turntable 15 to rotate synchronously, thereby changing the positions of the two liquid storage buckets 1, reducing the position deviation between the discharge pipe 16 and the discharge port, and ensuring that the solution enters the pretreatment box 2 smoothly. The connection between the probe 11 and the electric push rod 13 can be achieved through the connecting piece 12, and the electric push rod 13 can be used to drive the probe 11 and the connecting piece 12 to rise and fall, thereby facilitating the insertion of the probe 11 into the liquid surface to detect the pH value of the lactic acid liquid and assist in the subsequent adjustment of the pH value of the liquid. The pH test results of the liquid can be quickly observed through the control panel 20, and the stirring rod 10 can be driven by the motor 14 to rotate quickly to stir the liquid, thereby accelerating the mixing between the liquid and the acid / alkali solution and shortening the time for pH adjustment.

[0024] Example 2: Figure 1 and Figure 2 As shown, one end of the water outlet of the water pump 9 is fixedly connected to a connecting pipe 5, the bottom of the connecting pipe 5 is fixedly connected to an ion exchanger 3, the bottom of the ion exchanger 3 is fixedly connected to a water outlet pipe 21, the water outlet pipe 21 is L-shaped, one side of the ion exchanger 3 is fixedly connected to a waste liquid pipe 8, the bottom of the waste liquid pipe 8 is plugged with a recovery cylinder 4, one side of the recovery cylinder 4 is fixedly connected to a drain pipe, the inner wall of the recovery cylinder 4 is clamped with a filter screen 7, the bottom of the filter screen 7 is provided with a filter membrane assembly 6, and one side of the filter membrane assembly 6 is clamped and connected to the inner wall of the recovery cylinder 4.

[0025] The water pump 9 can be used to transport the feed liquid from the pretreatment box 2 to the ion exchanger 3, where ion exchange treatment is performed. The treated liquid can be quickly discharged through the outlet pipe 21, and the waste liquid pipe 8 can guide the movement of the waste liquid so that the waste liquid can smoothly enter the recovery drum 4 for recycling and treatment. The filter screen 7 can improve the filtering effect inside the recovery drum 4, and the filter membrane assembly 6 can assist in recovering the metal ions in the waste liquid, facilitating the subsequent reuse of the metal ions, thereby reducing resource waste. The filter screen 7 and the filter membrane assembly 6 are both easy to disassemble and replace.

[0026] The usage and working principle of this device are as follows: first, the lactic acid liquid is sent into the pretreatment box 2 through the pipeline on one side of the pretreatment box 2, and then the electric push rod 13 is used to drive the connecting piece 12 and the probe 11 to move downward, and the probe 11 is used to detect the pH value of the current liquid. When the pH value exceeds the predetermined range of 2.5-4.5, the motor 2 19 is used to drive the bevel gear 2 18 to rotate, and the bevel gear 2 18 is engaged with the bevel gear 17 to drive the bevel gear 17 and the turntable 15 to rotate on the top of the pretreatment box 2. At this time, the discharge pipe 16 at the bottom of the liquid storage hopper 1 is aligned with the discharge port above the pretreatment box 2, and the solenoid valve on the discharge pipe 16 is opened to discharge the acidic or alkaline solution. After discharge, the motor 14 is used to drive the stirring rod 10 to rotate to stir the liquid. After stirring, the probe 11 is used to detect the liquid again until the pH value of the liquid is within the predetermined range.

[0027] The feed liquid is sent into the ion exchanger 3 by a water pump 9 for ion exchange. The exchanged liquid is discharged from the outlet pipe 21, and the waste liquid is sent to the recovery drum 4 from the waste liquid pipe 8. The waste liquid is filtered by the filter screen 7 and then filtered by the filter membrane in the filter membrane assembly 6 to separate the metal ions from the remaining liquid. The filtered liquid can be discharged from one side of the recovery drum 4, wherein the filter membrane in the filter membrane assembly 6 is a nanofiltration membrane.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A separation and purification device for lactic acid fermentation production, comprising a water pump (9), wherein one end of the water inlet of the water pump (9) is fixedly connected to a pretreatment tank (2), characterized in that: The top of the pretreatment box (2) is fixedly connected to the water pump (9), and a pretreatment mechanism is provided on one side of the water pump (9). The pretreatment mechanism includes a liquid storage hopper (1), a probe (11) and an electric push rod (13). The bottom of the liquid storage hopper (1) is fixedly connected to a discharge pipe (16), and the discharge pipe (16) is inserted into the turntable (15). The bottom of the turntable (15) is fixedly connected to a bevel gear 1 (17). The bottom of the bevel gear 1 (17) is rotatably connected to the pretreatment box (2), and one side of the bevel gear 1 (17) is meshed with the There is a second bevel gear (18), one side of which is fixedly connected to the output shaft of a second motor (19), the second motor (19) is engaged with the top of the pretreatment box (2), the top of the pretreatment box (2) is fixedly connected to a control panel (20), the control panel (20) is electrically connected to a probe (11), the top of the probe (11) is fixedly connected to a connector (12), the top of the connector (12) is fixedly connected to an electric push rod (13), and the top of the electric push rod (13) is fixedly connected to the pretreatment box (2).

2. The separation and purification equipment for lactic acid fermentation production according to claim 1, characterized in that: A feeding port is provided on the top of the pretreatment box (2), and the pretreatment box (2) is rotatably connected to the second bevel gear (18).

3. The separation and purification equipment for lactic acid fermentation production according to claim 1, characterized in that: The top of the pretreatment box (2) is fixedly connected to a motor 1 (14), one end of the output shaft of the motor 1 (14) is fixedly connected to a stirring rod (10), and the stirring rod (10) is rotatably connected to the pretreatment box (2).

4. The separation and purification equipment for lactic acid fermentation production according to claim 1, characterized in that: One end of the water outlet of the water pump (9) is fixedly connected to a connecting pipe (5), and the bottom of the connecting pipe (5) is fixedly connected to an ion exchanger (3).

5. The separation and purification equipment for lactic acid fermentation production according to claim 4, characterized in that: The bottom of the ion exchanger (3) is fixedly connected to a water outlet pipe (21), and the water outlet pipe (21) is L-shaped.

6. The separation and purification equipment for lactic acid fermentation production according to claim 4, characterized in that: One side of the ion exchanger (3) is fixedly connected to a waste liquid pipe (8), a recovery cylinder (4) is plugged into the bottom of the waste liquid pipe (8), and one side of the recovery cylinder (4) is fixedly connected to a drain pipe.

7. The separation and purification equipment for lactic acid fermentation production according to claim 6, characterized in that: A filter screen (7) is engaged with the inner wall of the recovery cylinder (4), a filter membrane assembly (6) is provided at the bottom of the filter screen (7), and one side of the filter membrane assembly (6) is engaged and connected with the inner wall of the recovery cylinder (4).

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