Alkali preparation tank with cooling function

Abstract

The utility model relates to an alkali preparation tank with a cooling function, which belongs to the technical field of alkali preparation tanks and comprises a tank body component, a detachable cover plate is mounted above the tank body component, a motor is fixedly mounted above the cover plate, and a stirring shaft is rotatably arranged in the tank body component; the stirring shaft is of a hollow structure, a plurality of stirring branch pipes are uniformly distributed on a central rotating shaft of the stirring shaft, the central rotating shaft of the stirring shaft is communicated with the stirring branch pipes, and a plurality of stirring blades are arranged on the stirring branch pipes; a temporary storage cavity is formed in the cover plate, a temporary storage cavity cooling water inlet is formed in one side of the temporary storage cavity, and the tank assembly comprises an inner barrel and an outer jacket; the cooling efficiency is improved through a double-cooling structure, local overheating is avoided, the problems of high-temperature aging of an anticorrosive coating and corrosion acceleration of a stirring shaft are solved, the service life of equipment is prolonged, alkali liquor crystallization and caking are avoided, the concentration and mixing uniformity of alkali liquor are guaranteed, the stirring blades have stirring and heat conduction functions, cooling and stirring are carried out synchronously, and the cooling efficiency is improved. The structure is compact and the synergy efficiency is high.

Description

Technical Field

[0001] This utility model relates to an alkali mixing tank with a cooling function, and belongs to the technical field of alkali mixing tanks. Background Technology

[0002] Medium-chain triglycerides (MCTs) are triglycerides formed by the combination of medium-chain fatty acids with 8-12 carbon atoms and glycerol. They are naturally found in coconut oil, palm kernel oil, and breast milk, and are mainly used in fitness supplements, ketogenic diets, and foods for special medical purposes. The industrial production of MCTs requires the use of alkali tanks for refining, deacidification, and neutralization processes to remove free fatty acids and acidic impurities, ensuring product quality.

[0003] The preparation of alkali solution involves a highly exothermic reaction, with local temperatures potentially rising rapidly to over 80°C. Existing alkali preparation tanks typically employ only a jacketed cooling structure, relying on the tank wall for heat conduction by circulating cooling water into the jacket. This cooling method suffers from the following key drawbacks:

[0004] 1. Low cooling efficiency: It can only indirectly cool the tank surface and cannot accurately cool the core exothermic area of ​​the alkaline solution dissolution inside the tank, resulting in uneven temperature distribution and local overheating.

[0005] 2. Short equipment lifespan: Localized high temperatures will accelerate the aging and delamination of the anti-corrosion layer inside the tank and the corrosion of the agitator shaft, reducing the overall service life of the equipment;

[0006] 3. Poor solution quality: High temperature can easily cause high concentration of alkali solution to crystallize, which adheres to the tank wall and stirring parts, affecting the uniformity of mixing and causing fluctuations in the concentration of alkali solution. Utility Model Content

[0007] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide an alkali mixing tank with a cooling function. By setting up a dual cooling structure of overall cooling of the outer jacket and cooling of the built-in channel of the stirring shaft, the alkali solution in the tank can be cooled evenly, avoiding local overheating, thereby improving the service life of the equipment and the quality of the solution.

[0008] The alkali mixing tank with cooling function described in this utility model includes a tank assembly, a detachable cover plate installed on the top of the tank assembly, a motor fixedly installed on the top of the cover plate, and a stirring shaft rotatably installed inside the tank assembly. The stirring shaft is driven to rotate by the motor to stir the alkali solution in the tank assembly.

[0009] The stirring shaft has a hollow structure, with a liquid inlet at the top and a liquid outlet at the bottom. Several stirring branch pipes are evenly distributed on the central rotating shaft of the stirring shaft, and the central rotating shaft is connected to the stirring branch pipes. Several stirring blades are provided on the stirring branch pipes.

[0010] The cover plate is provided with a temporary storage cavity, and a cooling water inlet is provided on one side of the temporary storage cavity. The cooling water inlet is used to deliver cooling water to the interior of the central rotating shaft of the stirring shaft. The tank assembly includes an inner cylinder and an outer jacket, with the outer jacket fitted on the outside of the inner cylinder. The liquid inlet is connected to the temporary storage cavity, and the liquid outlet is connected to the outer jacket.

[0011] Preferably, the outer jacket is provided with a jacket cooling water inlet and a jacket cooling water outlet. Cooling water enters the outer jacket through the jacket cooling water inlet and flows out through the jacket cooling water outlet, thereby achieving overall cooling of the tank.

[0012] Preferably, the bottom of the inner cylinder is provided with a bearing chamber, in which a thrust ball bearing and a skeleton oil seal are installed. The stirring shaft is rotatably connected to the inner cylinder through the thrust ball bearing. At the same time, the thrust ball bearing supports the stirring shaft through a positioning step, and the skeleton oil seal is used to seal the gap between the stirring shaft and the inner cylinder.

[0013] Furthermore, a bearing chamber sealing cover is connected above the bearing chamber, and the center of the bearing chamber sealing cover is sealed to the stirring shaft through a lip seal ring. The bearing chamber sealing cover is used to prevent alkaline solution from entering the bearing chamber and damaging the thrust ball bearing.

[0014] Preferably, the central rotating shaft of the stirring shaft is provided with a flow divider plate to guide the cooling water to flow back and forth between the stirring branch pipe and the central rotating shaft, so as to realize the synchronous operation of stirring and cooling.

[0015] Preferably, a manhole is provided on the cover plate to facilitate workers to enter the tank for maintenance.

[0016] The advantages of this utility model compared with the prior art are:

[0017] This invention achieves overall cooling of the tank through an outer jacket, and directly applies cooling water channels within the stirring shaft to the core exothermic zone of alkali dissolution. This dual cooling structure significantly improves cooling efficiency, effectively avoids local overheating, prevents high-temperature aging of the anti-corrosion layer and accelerated corrosion of the stirring shaft, reduces wear on the equipment caused by alkali crystallization, and significantly extends the equipment's service life. The uniform temperature distribution prevents alkali crystallization and agglomeration, ensuring the accuracy of alkali concentration and the uniformity of mixing, and improving the stability of subsequent processes. In addition, the stirring blades have both stirring and heat conduction functions, allowing cooling and stirring to occur simultaneously, resulting in a compact structure and high synergistic efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3This is a schematic diagram of the stirring shaft;

[0021] Figure 4 This is a cross-sectional view of the stirring shaft;

[0022] Figure 5 yes Figure 2 A magnified view of a portion of region A in the middle.

[0023] In the diagram: 1. Motor; 2. Cover plate; 21. Manhole; 22. Cooling water inlet for temporary storage chamber; 23. Temporary storage chamber; 3. Tank assembly; 31. Inner cylinder; 311. Bearing chamber; 312. Bearing chamber sealing cover; 313. Thrust ball bearing; 314. Skeleton oil seal; 32. Outer jacket; 321. Jacket cooling water inlet; 322. Jacket cooling water outlet; 4. Agitator shaft; 41. Agitator branch pipe; 42. Liquid inlet; 43. Agitator blade; 44. Positioning step; 45. Diverter plate; 46. Liquid outlet. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments.

[0025] like Figure 1-5 As shown, this embodiment is achieved through the following technical solution: it includes a tank assembly 3, a detachable cover plate 2 is installed on the top of the tank assembly 3, a motor 1 is fixedly installed on the top of the cover plate 2, and a stirring shaft 4 is rotatably installed inside the tank assembly 3. The stirring shaft 4 is driven to rotate by the motor 1 to stir the alkaline solution in the tank assembly 3.

[0026] The stirring shaft 4 is a hollow structure. The upper part of the stirring shaft 4 is provided with a liquid inlet 42 and the bottom part of the stirring shaft 4 is provided with a liquid outlet 46. Several stirring branch pipes 41 are evenly distributed on the central rotating shaft of the stirring shaft 4. The central rotating shaft of the stirring shaft 4 is connected to the stirring branch pipes 41. Several stirring blades 43 are provided on the stirring branch pipes 41.

[0027] The cover plate 2 is provided with a temporary storage cavity 23, and a temporary storage cavity cooling water inlet 22 is provided on one side of the temporary storage cavity 23. The temporary storage cavity cooling water inlet 22 is used to deliver cooling water into the central rotating shaft of the stirring shaft 4. The cooling water flows in the central rotating shaft and the stirring branch pipe 41 to cool down the core exothermic zone of the alkaline solution dissolution inside the tank. The tank assembly 3 includes an inner cylinder 31 and an outer jacket 32, with the outer jacket 32 ​​sleeved on the outside of the inner cylinder 31. The liquid inlet 42 is connected to the temporary storage cavity 23, and the liquid outlet 46 is connected to the outer jacket 32.

[0028] In this embodiment, the outer jacket 32 ​​is provided with a jacket cooling water inlet 321 and a jacket cooling water outlet 322. Cooling water enters the outer jacket through the jacket cooling water inlet 321 and flows out through the jacket cooling water outlet 322, thereby achieving overall cooling of the tank.

[0029] The inner cylinder 31 is provided with a bearing chamber 311 at the bottom. A thrust ball bearing 313 and a skeleton oil seal 314 are installed in the bearing chamber 311. The stirring shaft 4 is rotatably connected to the inner cylinder 31 through the thrust ball bearing 313. At the same time, the thrust ball bearing 313 supports the stirring shaft 4 through the positioning step 44. The skeleton oil seal 314 is used to seal the gap between the stirring shaft 4 and the inner cylinder 31.

[0030] The bearing chamber 311 is sealed with a bearing chamber sealing cover 312 above it. The center of the bearing chamber sealing cover 312 is sealed to the stirring shaft 4 through a lip seal ring. The bearing chamber sealing cover 312 is used to prevent alkaline solution from entering the bearing chamber 311 and damaging the thrust ball bearing.

[0031] A flow divider 45 is provided inside the central rotating shaft of the stirring shaft 4 to guide the cooling water to flow back and forth between the stirring branch pipe 41 and the central rotating shaft, so as to realize the synchronous operation of stirring and cooling. A manhole 21 is provided on the cover plate 2 to facilitate workers to enter the tank for maintenance.

[0032] The working process of this utility model is as follows:

[0033] Connect the cooling water inlet 22 of the temporary storage chamber and the cooling water inlet 321 of the jacket to the cooling water pipeline. The cooling water is sent into the outer jacket 32 ​​and the temporary storage chamber 23 by the circulation pump. The cooling water entering the outer jacket 32 ​​is discharged from the jacket cooling water outlet 322. The cooling water entering the temporary storage chamber 23 enters the central rotating shaft of the stirring shaft 4 through the liquid inlet 42. Due to the obstruction of the flow divider 45, the cooling water flows back and forth between each stirring branch pipe 41 and the central rotating shaft, and finally is discharged into the outer jacket 32 ​​from the liquid outlet 46.

[0034] Driven by the motor 1, the stirring shaft 4 rotates and continuously stirs the alkali solution in the alkali preparation tank through the stirring branch pipe 41 and the stirring blade 43. At the same time, the alkali solution is cooled down by the circulation of cooling water. The stirring blade 43 not only plays a stirring role, but also helps to conduct heat and improve the cooling effect.

Claims

1. A alkali mixing tank with a cooling function, characterized in that, Includes a tank assembly (3), a removable cover plate (2) is installed on the top of the tank assembly (3), a motor (1) is fixedly installed on the top of the cover plate (2), and a stirring shaft (4) is rotatably installed inside the tank assembly (3), and the stirring shaft (4) is driven to rotate by the motor (1); The stirring shaft (4) is a hollow structure. The upper part of the stirring shaft (4) is provided with a liquid inlet (42) and the bottom part of the stirring shaft (4) is provided with a liquid outlet (46). Several stirring branch pipes (41) are evenly distributed on the central rotating shaft of the stirring shaft (4). The central rotating shaft of the stirring shaft (4) is connected to the stirring branch pipes (41). Several stirring blades (43) are provided on the stirring branch pipes. The cover plate (2) is provided with a temporary storage cavity (23), and a temporary storage cavity cooling water inlet (22) is provided on one side of the temporary storage cavity (23); the tank assembly (3) includes an inner cylinder (31) and an outer jacket (32), and the outer jacket (32) is fitted on the outside of the inner cylinder (31); the liquid inlet (42) is connected to the temporary storage cavity (23), and the liquid outlet (46) is connected to the outer jacket (32).

2. The alkali mixing tank with cooling function according to claim 1, characterized in that, The outer jacket (32) is provided with a jacket cooling water inlet (321) and a jacket cooling water outlet (322).

3. The alkali mixing tank with cooling function according to claim 1, characterized in that, The inner cylinder (31) is provided with a bearing chamber (311) at the bottom. A thrust ball bearing (313) and a skeleton oil seal (314) are installed in the bearing chamber (311). The stirring shaft (4) is rotatably connected to the inner cylinder (31) through the thrust ball bearing (313). The thrust ball bearing (313) supports the stirring shaft (4) through the positioning step (44).

4. The alkali mixing tank with cooling function according to claim 3, characterized in that, The bearing chamber (311) is sealed above the bearing chamber sealing cover (312), and the center of the bearing chamber sealing cover (312) is sealed to the stirring shaft (4) through a lip seal ring.

5. The alkali mixing tank with cooling function according to claim 1, characterized in that, The stirring shaft (4) has a flow divider (45) inside its central rotating shaft.

6. The alkali mixing tank with cooling function according to claim 1, characterized in that, A manhole (21) is provided on the cover plate (2).

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