A sebacic acid acidification crystallization precipitation device

Abstract

This utility model discloses a sebacic acid acidification crystallization precipitation device, specifically relating to the technical field of crystallization precipitation equipment. It includes a crystallization tank with a sealing cover at the top. A rotating rod is rotatably mounted at the bottom of the sealing cover. A spiral auger is fixed on the rotating rod, and multiple stirring rods arranged in a circular array are fixed on the spiral auger. A support frame is provided on the crystallization tank, and a cleaning box is fixed on the support frame near the crystallization tank. A rectangular through-hole is opened at the top of the support frame, and a slider is slidably mounted inside the rectangular through-hole. A telescopic rod is fixed on the slider. This utility model uses the spiral auger on the rotating rod and multiple stirring rods to agitate the liquid, keeping the mixture in a flowing state and avoiding localized oversaturation that could lead to uneven crystallization. The support frame supports the rotation of the crystallization tank and the movement of the sealing cover and rotating rod, facilitating cleaning of the crystallization tank and rotating rod and preventing residual mixture from affecting subsequent production quality.

Description

Technical Field

[0001] This utility model relates to the field of crystallization precipitation equipment technology, and more specifically to a sebacic acid acidification crystallization precipitation equipment. Background Technology

[0002] Sebacic acid is an important organic dicarboxylic acid widely used in chemical, pharmaceutical, and plastics industries. Its acidification and crystallization process is a key step in the preparation of high-purity sebacic acid. Typically, an aqueous solution of sebacic acid salts (such as disodium sebacic acid and dipotassium sebacic acid) is used as raw material, and the salt is converted into free sebacic acid through an acidification reaction. Sebacic acid acidification and crystallization equipment usually includes an acidifier, a crystallization settling tank, a dehydration and washing centrifuge, a tubular heat exchanger, and a multi-stage acidification crystallization reactor.

[0003] For example, a sebacic acid acidification and crystallization precipitation device with prior art disclosure number CN219721965U uses a stirrer to ensure uniform mixing of sulfuric acid and the feed solution, thereby regulating the acidification rate and preventing the aggregation of sebacic acid after precipitation, thus creating conditions for washing. Furthermore, this device is easy to operate, and its volume can be designed according to production needs, effectively reducing costs.

[0004] However, the existing technology has the following problems in use: After the traditional crystallization settling tank is used, some crystals remain on the stirring structure and tank wall, affecting the quality of subsequent production. Therefore, cleaning is required. However, due to the complex structure of the entire crystallization settling tank, cleaning is very inconvenient, which reduces the crystallization precipitation efficiency. Based on this, the present invention provides a sebacic acid acidification crystallization precipitation device that is easy to clean and has high precipitation efficiency. Utility Model Content

[0005] To overcome the aforementioned deficiencies in the prior art, this utility model provides a sebacic acid acidification crystallization precipitation device. The device uses a spiral auger on a rotating rod in conjunction with multiple stirring rods to agitate the liquid, maintaining the mixture in a flowing state and preventing localized oversaturation that could lead to uneven crystallization. A support frame supports the rotation of the crystallization tank, and the sealing cover and rotating rod move, facilitating cleaning of the crystallization tank and rotating rod and preventing residual mixture from affecting subsequent production quality. This addresses the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sebacic acid acidification crystallization precipitation device, comprising a crystallization tank, a sealing cover at the top of the crystallization tank, a rotating rod rotatably mounted at the bottom of the sealing cover, a spiral auger fixedly mounted on the rotating rod, a plurality of stirring rods arranged in a ring array fixedly mounted on the spiral auger, a support frame on the crystallization tank, a cleaning box fixedly mounted on the support frame near the crystallization tank, a rectangular through hole at the top of the support frame, a slider slidably mounted inside the rectangular through hole, a telescopic rod fixedly mounted on the slider, and the bottom end of the piston rod of the telescopic rod fixed to the top of the sealing cover via a connecting plate.

[0007] In a preferred embodiment, a rotating shaft is fixedly provided on both sides of the crystallization tank. The rotating shaft is rotatably connected to the support frame. A first motor is fixedly provided on one side of the support frame. The output shaft of the first motor is fixed to the rotating shaft. The crystallization tank is driven to rotate by the first motor, thereby automatically adjusting the angle of the crystallization tank.

[0008] In a preferred embodiment, a linear module is fixedly provided on the inner wall of the rectangular through hole, and the slider is fixed on the linear module. The linear module drives the sealing cover to move, thereby improving the cleaning efficiency.

[0009] In a preferred embodiment, a second motor is fixedly mounted on the top of the sealing cover. The bottom end of the output shaft of the second motor passes through the sealing cover and is fixed to the top of the rotating rod. The top of the second motor is fixed to the connecting plate. The rotating rod is driven to rotate by the second motor, thereby improving the crystallization efficiency.

[0010] In a preferred embodiment, the inner wall of the cleaning tank is fixedly provided with a plurality of nozzles arranged in a ring array, and a water pump is fixedly provided on one side of the cleaning tank. The water pump is connected to the plurality of nozzles through a hose, and water is sprayed by the water pump and the nozzles for rinsing, thereby improving the rinsing efficiency.

[0011] In a preferred embodiment, the bottom of the crystallization tank is connected to a discharge pipe, and a solenoid valve is fixedly installed on the discharge pipe to facilitate the control of the opening and closing of the discharge pipe.

[0012] In a preferred embodiment, the bottom of the support frame is provided with a plurality of rectangular fixing holes, which are evenly distributed on the support frame to improve the stability of the support frame.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] This invention uses a second motor to drive the spiral auger and stirring rod on the rotating rod to rotate at high speed. The spiral auger can transport the mixture at the bottom of the crystallization tank upwards, and multiple stirring rods can agitate the mixture, thereby keeping the mixture in a flowing state and preventing local oversaturation that could lead to uneven crystallization.

[0015] In addition, the adjustable structure on the support frame allows the sealing cover and rotating rod to be automatically moved into the cleaning tank for cleaning. At the same time, the crystallization tank is rotated so that its opening faces downward, making it easier to clean the inside of the crystallization tank and avoiding the residue of the mixed liquid from affecting the quality of subsequent production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a top view of the overall structure of this utility model;

[0018] Figure 3 This is a front view of the overall structure of this utility model;

[0019] Figure 4 This is a cross-sectional view of the crystallization tank of this utility model;

[0020] Figure 5 This is a schematic diagram of the support frame structure of this utility model.

[0021] The attached diagram is labeled as follows: 1. Crystallization tank; 2. Sealing cover; 3. Rotating rod; 4. Spiral auger; 5. Stirring rod; 6. Support frame; 7. Cleaning tank; 8. Rectangular through hole; 9. Slider; 10. Telescopic rod; 11. Connecting plate; 12. Rotating shaft; 13. First motor; 14. Linear module; 15. Second motor; 16. Nozzle; 17. Water pump; 18. Discharge pipe; 19. Solenoid valve; 20. Rectangular fixing hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Refer to the instruction manual appendix Figures 1-5 This utility model provides a sebacic acid acidification crystallization precipitation device, including a crystallization tank 1. The top of the crystallization tank 1 is connected to a sealing cover 2 by bolts. The bottom of the sealing cover 2 is rotatably provided with a rotating rod 3. A spiral auger 4 is fixed on the rotating rod 3. A plurality of stirring rods 5 arranged in a ring array are fixed on the spiral auger 4. A support frame 6 is provided on the crystallization tank 1.

[0024] Both sides of the crystallization tank 1 are fixed with rotating shafts 12, which are rotatably connected to the support frame 6. A first motor 13 is fixed on one side of the support frame 6. The output shaft of the first motor 13 is fixed to the rotating shaft 12. The first motor 13 drives the crystallization tank 1 to rotate, thereby automatically adjusting the angle of the crystallization tank 1. A second motor 15 is fixed on the top of the sealing cover 2. The bottom end of the output shaft of the second motor 15 passes through the sealing cover 2 and is fixed to the top of the rotating rod 3. The top of the second motor 15 is fixed to the connecting plate 11.

[0025] The bottom of the crystallization tank 1 is connected to a discharge pipe 18, and a solenoid valve 19 is fixedly installed on the discharge pipe 18. The solenoid valve 19 is an automated component that controls the opening and closing of the fluid passage through electromagnetic force. It uses the magnetic force generated when the electromagnetic coil is energized or de-energized to drive the valve core to move, thereby realizing the opening and closing of the fluid, flow regulation or direction control.

[0026] In actual use, the mixture in the acidifier is transported to the crystallization tank 1 for crystallization and cooling. The second motor 15 drives the rotating rod 3 to rotate at high speed. The spiral auger 4 on the rotating rod 3 transports the mixture at the bottom of the crystallization tank 1 upward. At the same time, multiple stirring rods 5 agitate the mixture to keep it in a certain flow state and prevent local oversaturation that could lead to uneven crystallization. Finally, the mixture is discharged from the discharge pipe 18 and enters the dehydration and washing centrifuge to wash and dehydrate to obtain wet sebacic acid. After drying, the product sebacic acid is obtained.

[0027] like Figure 1 and Figure 2 As shown, a cleaning box 7 is fixedly installed on the side of the support frame 6 near the crystallization tank 1. A rectangular through hole 8 is opened on the top of the support frame 6. A slider 9 is slidably installed inside the rectangular through hole 8. A linear module 14 is fixedly installed on the inner wall of the rectangular through hole 8. The slider 9 is fixed on the linear module 14. The motor in the linear module 14 drives the lead screw to rotate, and the nut drives the slider to move linearly. The displacement accuracy is controlled by the pitch, so that the position of the slider 9 can be automatically adjusted. A telescopic rod 10 is fixed on the slider 9. The bottom end of the piston rod of the telescopic rod 10 is fixed to the top of the sealing cover 2 through the connecting plate 11. The telescopic rod 10 can be a pneumatic multi-stage telescopic rod, which is a telescopic mechanism composed of multiple nested rod sections. The length is adjusted by the relative sliding of each rod section. Compressed air drives the cylinder piston to realize the extension and retraction of the rod section.

[0028] like Figure 1 As shown, the inner wall of the cleaning tank 7 is fixed with a plurality of nozzles 16 arranged in a ring array. A water pump 17 is fixed on one side of the cleaning tank 7. The water pump 17 is connected to the plurality of nozzles 16 through a hose. In actual use, the staff uses a water pipe to connect the water pump 17 to a water source (faucet) so that it can automatically draw water for rinsing.

[0029] After crystallization, the telescopic rod 10 is used to lift the rotating rod 3 on the sealing cover 2 out of the crystallization tank 1. Then, the first motor 13 drives the rotating shaft 12 to rotate the crystallization tank 1, so that the opening of the crystallization tank 1 faces downward, making it convenient for the staff to clean the inside of the crystallization tank 1 and avoid the residue of the mixed liquid from affecting the quality of subsequent production. At the same time, the linear module 14 and the telescopic rod 10 are used to move the rotating rod 3 into the cleaning tank 7. Multiple nozzles 16 on the inner wall of the cleaning tank 7 are used to rinse the rotating rod 3, the spiral auger 4, the stirring rod 5 and the sealing cover 2, so as to avoid the crystal residue from affecting the quality of subsequent production.

[0030] like Figure 1 and Figure 2 As shown, the bottom of the support frame 6 has multiple rectangular fixing holes 20, which are evenly distributed on the support frame 6; the multiple rectangular fixing holes 20 are provided to improve the stability of the support frame 6.

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sebacic acid acidification crystallization precipitation apparatus comprising a crystallization tank (1), characterized in that: The crystallization tank (1) is provided with a sealing cover (2) at the top, and a rotating rod (3) is provided at the bottom of the sealing cover (2). A spiral auger (4) is fixed on the rotating rod (3), and multiple stirring rods (5) arranged in a ring array are fixed on the spiral auger (4). The crystallization tank (1) is provided with a support frame (6), and a cleaning box (7) is fixedly provided on the side of the support frame (6) near the crystallization tank (1). A rectangular through hole (8) is opened on the top of the support frame (6), and a slider (9) is slidably provided inside the rectangular through hole (8). A telescopic rod (10) is fixedly provided on the slider (9), and the bottom end of the piston rod of the telescopic rod (10) is fixed to the top of the sealing cover (2) through a connecting plate (11).

2. A sebacic acid crystallization apparatus according to claim 1, wherein: The crystallization tank (1) is fixedly provided with rotating shafts (12) on both sides. The rotating shafts (12) are rotatably connected to the support frame (6). The support frame (6) is fixedly provided with a first motor (13) on one side. The output shaft of the first motor (13) is fixed to the rotating shaft (12).

3. The sebacic acid crystallization apparatus of claim 1, wherein: The inner wall of the rectangular through hole (8) is fixed with a linear module (14), and the slider (9) is fixed on the linear module (14).

4. The sebacic acid crystallization apparatus of claim 1, wherein: The top of the sealing cover (2) is fixedly provided with a second motor (15). The bottom end of the output shaft of the second motor (15) passes through the sealing cover (2) and is fixed to the top of the rotating rod (3). The top of the second motor (15) is fixed to the connecting plate (11).

5. The sebacic acid crystallization apparatus of claim 1, wherein: The inner wall of the cleaning tank (7) is fixed with a plurality of nozzles (16) arranged in a ring array. A water pump (17) is fixed on one side of the cleaning tank (7). The water pump (17) is connected to the plurality of nozzles (16) through a hose.

6. The sebacic acid crystallization apparatus of claim 1, wherein: The bottom of the crystallization tank (1) is connected to a discharge pipe (18), and a solenoid valve (19) is fixedly installed on the discharge pipe (18).

7. The sebacic acid crystallization apparatus of claim 1, wherein: The support frame (6) has multiple rectangular fixing holes (20) at its bottom, and the multiple rectangular fixing holes (20) are evenly distributed on the support frame (6).

Images