A flat membrane type evaporation crystallization integrated machine

Abstract

This utility model discloses a planar film-type evaporation and crystallization integrated machine, belonging to the technical field of evaporation and crystallization equipment. It includes: a stirring tank with a lid on top; an evaporation chamber on one side of the stirring tank; multiple sets of planar evaporation films inside the evaporation chamber; and a stirring assembly inside the stirring tank, comprising bevel gear one, bevel gear two, and bevel gear three. This assembly can stir the solution from different directions and angles, enabling faster and more comprehensive mixing of the solvent and solution, ensuring uniform solute distribution in the solution, providing a stable material basis for subsequent evaporation and crystallization, reducing localized crystallization or differences in crystal quality caused by uneven solution distribution, and allowing for quick installation and removal of the lid. Operators can directly and thoroughly clean the inside of the stirring tank, preventing residual crystals or impurities from affecting subsequent solution processing.

Description

Technical Field

[0001] This utility model relates to the field of evaporation and crystallization equipment technology, and in particular to a planar film-type integrated evaporation and crystallization machine. Background Technology

[0002] In the production processes of industries such as chemical, pharmaceutical, and food, evaporation crystallization is a crucial step in achieving solute-solvent separation and obtaining high-purity crystalline products. The performance of the equipment directly impacts product quality and production efficiency. Traditional evaporation crystallization equipment suffers from significant technical bottlenecks: First, the stirring system often employs a single-shaft stirring structure, resulting in low solution mixing efficiency and difficulty in quickly breaking down concentration and temperature differences. This leads to uneven solute distribution, easily causing localized supersaturation crystallization, resulting in crystals of varying sizes and purity, failing to meet the quality standards of high-end products. Second, equipment maintenance is inconvenient. The barrel lid often uses cumbersome methods such as bolt fastening, requiring long disassembly and assembly times. Cleaning residual crystals and impurities inside is difficult, easily leading to batch-to-batch cross-contamination, affecting product quality stability, increasing cleaning costs, and reducing downtime. Third, the solution circulation system is poorly designed, with insufficient circulation power or a single circulation path, resulting in uneven concentration increases during evaporation, making precise control of the crystallization process impossible, leading to disordered crystal growth, reduced crystallization efficiency, and lower product quality. Therefore, we propose a planar membrane-type integrated evaporation crystallization machine to solve this problem. Utility Model Content

[0003] The purpose of this invention is to provide a planar membrane-type evaporation and crystallization integrated machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A planar film-type evaporation and crystallization integrated machine includes: a stirring tank, a tank cover on top of the stirring tank, an evaporation chamber on one side of the stirring tank, multiple sets of planar evaporation films inside the evaporation chamber, and a stirring assembly inside the stirring tank. The stirring assembly includes: a first bevel gear, a second bevel gear, and a third bevel gear, both of which mesh with the first bevel gear. A first stirring shaft is fixedly mounted on the bottom of the third bevel gear, and a second stirring shaft is rotatably mounted inside the first stirring shaft. The first stirring shaft is fixed to the second bevel gear. The connection includes multiple sets of fixing rings fixedly installed on the outer sides of both stirring shaft one and stirring shaft two, and multiple sets of stirring rods fixedly installed on the outer sides of each set of fixing rings. Two sets of positioning blocks are fixedly installed on the top of the stirring tank, and both sets of positioning blocks are slidably inserted into the inside of the tank lid. The inside of the tank lid has two sets of placement slots, and each set of placement slots is equipped with an installation component. The installation component includes a connecting shaft, a pull plate fixedly installed at the bottom of the connecting shaft, a diagonal rod slidably abutting against the inside of the pull plate, and the diagonal rod movably inserted into the inside of the positioning block.

[0006] Preferably, a connecting pipe 1 is fixedly installed at the bottom of the mixing tank, a connecting pipe 2 is provided at one end of the connecting pipe 1, the bottom end of the connecting pipe 2 is fixedly connected to the evaporator, a short pipe is fixedly installed on one side of the evaporator, a connecting pipe 3 is provided on one side of the short pipe, one end of the connecting pipe 3 is fixedly connected to the mixing tank, a pump body is fixedly installed at one end of both the connecting pipe 1 and the short pipe 1, and one end of the two sets of pump bodies is fixedly connected to the connecting pipe 2 and the connecting pipe 3 respectively.

[0007] Preferably, a limit rod is slidably installed inside both sets of pull plates, and a spring is sleeved on the outside of both sets of limit rods. The two ends of the springs are respectively fixedly connected to the top inner wall of the corresponding pull plate and the placement groove.

[0008] Preferably, a housing is fixedly installed on the top of the bucket lid, and the first bevel gear, the second bevel gear, and the third bevel gear are all disposed inside the housing. A motor is fixedly installed on one side of the housing, and the output shaft of the motor is fixedly connected to the first bevel gear. The second stirring shaft is rotatably installed on the top inner wall of the housing, and the first stirring shaft is rotatably connected to the stirring bucket.

[0009] Preferably, both sets of connecting shafts slide through to the top of the bucket lid, and the top of both sets of connecting shafts is fixedly equipped with the same set of pull rings. An electric heating plate is provided between the inner wall and the outer wall of the mixing bucket.

[0010] Preferably, a feed hopper is fixedly installed on the top of the bucket lid, and a drain pipe is fixedly installed on the bottom of the evaporator.

[0011] In this invention, a planar film-type evaporation and crystallization integrated machine is equipped with a stirring assembly. When the motor starts, its output shaft drives a bevel gear one to rotate. Since bevel gears two and three mesh with bevel gear one, they also rotate accordingly. The rotation of bevel gear three drives a stirring shaft one to rotate, and stirring shaft one is fixedly connected to bevel gear two. This allows stirring shaft one to rotate while stirring shaft one rotates, simultaneously driving the internally mounted stirring shaft two to rotate. This stirs the solution in the stirring tank from different directions. The two sets of stirring rods stir the solution from different directions and angles. Compared to single-shaft stirring, this method can more quickly and comprehensively mix the solvent and solution, ensuring uniform solute distribution in the solution. This provides a stable material basis for subsequent evaporation and crystallization, reducing problems such as localized crystallization or differences in crystal quality caused by uneven solution.

[0012] This utility model describes a planar film-type evaporation and crystallization integrated machine. It includes an installation assembly, an evaporation chamber, a planar evaporation membrane, and a pump. Pulling the pull ring upwards causes the connecting shaft and pull plate to move upwards, compressing the spring. During the upward movement of the pull plate, a slanted rod slides inside the pull plate and gradually slides into the placement slot. The lid is placed on top of the stirring tank. Releasing the pull ring causes the spring to reset, pushing the pull plate downwards, allowing the slanted rod to be inserted into the positioning block. Through the pump, evaporation chamber, and planar evaporation membrane, the solvent continuously evaporates, gradually increasing the solution concentration until it reaches a supersaturated state, where crystals precipitate within the stirring tank. This allows for quick installation and removal of the lid. Operators can directly and thoroughly clean the inside of the stirring tank, preventing residual crystals or impurities from affecting subsequent solution processing, preventing cross-contamination between different batches of solution, and ensuring stable product quality. The pump drives the solution to circulate between the stirring tank and the evaporation chamber, gradually and uniformly increasing the solution concentration to a supersaturated state, ensuring that the solute crystallizes slowly and uniformly within the stirring tank, forming crystal products with uniform particle size and high purity. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a planar film-type integrated evaporation and crystallization machine proposed in this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of a planar film-type integrated evaporation and crystallization machine proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the stirring assembly structure proposed in this utility model;

[0016] Figure 4 for Figure 2 A magnified view of part A in the middle.

[0017] In the diagram: 1. Mixing tank; 2. Tank lid; 3. Mounting assembly; 301. Pull ring; 302. Connecting shaft; 303. Pull plate; 304. Diagonal bar; 305. Spring; 306. Limiting rod; 4. Housing; 5. Mixing assembly; 501. Bevel gear one; 502. Bevel gear two; 503. Bevel gear three; 504. Mixing shaft one; 505. Mixing shaft two; 506. Fixing ring; 507. Mixing rod; 6. Connecting pipe one; 7. Connecting pipe two; 8. Evaporator; 9. Pump body; 10. Connecting pipe three; 11. Flat evaporation film; 12. Feed hopper; 13. Drain pipe; 14. Positioning block; 15. Electric heating plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-4 A planar film-type evaporation crystallization integrated machine includes: a stirring tank 1, a tank cover 2 on the top of the stirring tank 1, an evaporation chamber 8 on one side of the stirring tank 1, multiple sets of planar evaporation films 11 inside the evaporation chamber 8, and a stirring assembly 5 inside the stirring tank 1. The stirring assembly 5 includes: a first bevel gear 501, a second bevel gear 502, and a third bevel gear 503. The second bevel gear 502 and the third bevel gear 503 mesh with the first bevel gear 501. A first stirring shaft 504 is fixedly installed at the bottom of the third bevel gear 503. A second stirring shaft 505 is rotatably installed inside the first stirring shaft 504. The first stirring shaft 504 meshes with the second bevel gear 505. 2. Fixed connection: Multiple sets of fixing rings 506 are fixedly installed on the outer side of both stirring shaft 1 504 and stirring shaft 2 505. Multiple sets of stirring rods 507 are fixedly installed on the outer side of each set of fixing rings 506. Two sets of positioning blocks 14 are fixedly installed on the top of the mixing tank 1. Both sets of positioning blocks 14 are slidably inserted into the inside of the tank cover 2. Two sets of placement slots are opened inside the tank cover 2. Each set of placement slots is equipped with an installation component 3. The installation component 3 includes: a connecting shaft 302. A pull plate 303 is fixedly installed on the bottom of the connecting shaft 302. A diagonal rod 304 is slidably abutted inside the pull plate 303. The diagonal rod 304 is movably inserted into the inside of the positioning block 14.

[0020] In this embodiment, a connecting pipe 6 is fixedly installed at the bottom of the mixing tank 1. A connecting pipe 7 is provided at one end of the connecting pipe 6. The bottom end of the connecting pipe 7 is fixedly connected to the evaporator 8. A short pipe is fixedly installed on one side of the evaporator 8. A connecting pipe 10 is provided on one side of the short pipe. One end of the connecting pipe 10 is fixedly connected to the mixing tank 1. A pump body 9 is fixedly installed at one end of both the connecting pipe 6 and the short pipe. One end of the two sets of pump bodies 9 is fixedly connected to the connecting pipe 7 and the connecting pipe 10, respectively, to facilitate the rapid flow and evaporation of the solvent. Limiting rods 306 are slidably installed inside the two sets of pull plates 303. Springs 305 are sleeved on the outside of the two sets of limiting rods 306. The two ends of the two sets of springs 305 are fixedly connected to the corresponding pull plates 303 and the top inner wall of the placement groove, respectively, to facilitate the rapid reset of the inclined rod 304 and the rapid installation and fixation of the tank cover 2.

[0021] In this embodiment, a housing 4 is fixedly installed on the top of the lid 2. Bevel gear 1 501, bevel gear 2 502, and bevel gear 3 503 are all located inside the housing 4. A motor is fixedly installed on one side of the housing 4. The output shaft of the motor is fixedly connected to bevel gear 1 501. Stirring shaft 2 505 is rotatably installed on the top inner wall of the housing 4. Stirring shaft 1 504 is rotatably connected to the stirring tank 1 to facilitate bidirectional stirring of the solution inside the stirring tank 1. Both sets of connecting shafts 302 slide through to the top of the lid 2. The same set of pull rings 301 are fixedly installed on the top of the two sets of connecting shafts 302. An electric heating plate 15 is provided between the inner and outer walls of the stirring tank 1 to facilitate rapid evaporation and crystallization of the solution inside the stirring tank 1. A feed hopper 12 is fixedly installed on the top of the lid 2. A drain pipe 13 is fixedly installed on the bottom of the evaporation tank 8 to facilitate the entry of solvent into the stirring tank 1 and the discharge of wastewater.

[0022] In this embodiment, during use, the motor starts, and its output shaft drives the first bevel gear 501 to rotate. Since the second bevel gear 502 and the third bevel gear 503 are both meshed with the first bevel gear 501, the second bevel gear 502 and the third bevel gear 503 also rotate accordingly. The rotation of the third bevel gear 503 drives the first stirring shaft 504 to rotate, and the first stirring shaft 504 is fixedly connected to the second bevel gear 502, so that while the first stirring shaft 504 is rotating, it also drives the internally mounted second stirring shaft 505 to rotate. The fixing ring 506 on the outside of the first stirring shaft 504 and the second stirring shaft 505, together with the stirring rod 507, stir the solution in the stirring tank 1 from different directions under the dual-shaft rotation, so as to achieve thorough mixing of the solution and create good conditions for subsequent evaporation and crystallization. Meanwhile, the electric heating plate 15 between the inner and outer walls of the mixing tank 1 can preheat the solution and improve the evaporation efficiency. Pulling the pull ring 301 upwards causes the connecting shaft 302 and the pull plate 303 to move upwards, compressing the spring 305. During the upward movement of the pull plate 303, the inclined rod 304 slides inside the pull plate 303 and gradually slides into the placement groove. The lid 2 is placed on top of the mixing tank 1, so that the positioning block 14 is inserted into the lid 2. Releasing the pull ring 301 causes the spring 305 to reset and push the pull plate 303 downwards, so that the inclined rod 304 can be inserted into the positioning block 14. This facilitates the installation of the lid 2. When disassembling, pull the pull ring 301 again, and the inclined rod 304 is pulled out from the positioning block 14, so that the lid 2 can be removed for easy cleaning of the inside. Under the action of the pump body 9, the connecting pipe 6 at the bottom of the mixing tank 1 transports the evenly stirred solution to the connecting pipe 7, and then sends it into the evaporation box 8. The multiple planar evaporation films 11 inside the evaporator 8 greatly increase the evaporation area of ​​the solution. The solution forms a thin liquid film on the surface of the planar evaporation films 11, accelerating solvent evaporation. The concentrated liquid after evaporation flows back to the stirring tank 1 through a short pipe and connecting pipe 3 10, under the action of another set of pumps 9. In this cycle, the solvent continues to evaporate, the solution concentration gradually increases, and eventually reaches a supersaturated state, where crystals precipitate in the stirring tank 1. The stirring assembly 5 works continuously to ensure uniform dispersion of crystals and prevent crystal aggregation. Finally, the drain pipe 13 at the bottom of the evaporator 8 can discharge impurities generated during the evaporation process, while the feed hopper 12 is used to add the solution to be treated.

[0023] The above provides a detailed description of the planar film-type integrated evaporation and crystallization machine provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A flat membrane type evaporation crystallization integrated machine, characterized by, include: A mixing tank (1) is provided with a lid (2) on top. An evaporator (8) is provided on one side of the mixing tank (1). Multiple sets of planar evaporation films (11) are provided inside the evaporator (8). A stirring assembly (5) is provided inside the mixing tank (1). The stirring assembly (5) includes: a bevel gear one (501), a bevel gear two (502), and a bevel gear three (503). The bevel gear two (502) and the bevel gear three (503) are meshed with the bevel gear one (501). A stirring shaft one (504) is fixedly installed at the bottom of the bevel gear three (503). A stirring shaft two (505) is rotatably installed inside the stirring shaft one (504). The stirring shaft one (504) is fixedly connected to the bevel gear two (502). Multiple sets of fixing rings (506) are fixedly installed on the outer sides of the first stirring shaft (504) and the second stirring shaft (505). Multiple sets of stirring rods (507) are fixedly installed on the outer sides of the multiple sets of fixing rings (506). Two sets of positioning blocks (14) are fixedly installed on the top of the stirring tank (1). The two sets of positioning blocks (14) are slidably inserted into the inside of the tank cover (2). Two sets of placement slots are opened inside the tank cover (2). An installation component (3) is provided inside the two sets of placement slots. The installation component (3) includes: a connecting shaft (302). A pull plate (303) is fixedly installed at the bottom of the connecting shaft (302). A diagonal rod (304) slides against the inside of the pull plate (303). The diagonal rod (304) is movably inserted into the inside of the positioning block (14).

2. The apparatus according to claim 1, wherein the apparatus is characterized by: A connecting pipe 1 (6) is fixedly installed at the bottom of the mixing tank (1). A connecting pipe 2 (7) is provided at one end of the connecting pipe 1 (6). The bottom end of the connecting pipe 2 (7) is fixedly connected to the evaporator (8). A short pipe is fixedly installed on one side of the evaporator (8). A connecting pipe 3 (10) is provided on one side of the short pipe. One end of the connecting pipe 3 (10) is fixedly connected to the mixing tank (1). A pump body (9) is fixedly installed at one end of both the connecting pipe 1 (6) and the short pipe 1. One end of each of the two sets of pump bodies (9) is fixedly connected to the connecting pipe 2 (7) and the connecting pipe 3 (10) respectively.

3. The apparatus according to claim 1, wherein the apparatus is characterized by: Both sets of pull plates (303) have limit rods (306) slidably installed inside them. Both sets of limit rods (306) have springs (305) sleeved on their outer sides. The two ends of the two sets of springs (305) are fixedly connected to the corresponding pull plate (303) and the top inner wall of the placement groove, respectively.

4. The planar film-type integrated evaporation and crystallization machine according to claim 1, characterized in that, A housing (4) is fixedly installed on the top of the bucket lid (2). The first bevel gear (501), the second bevel gear (502), and the third bevel gear (503) are all located inside the housing (4). A motor is fixedly installed on one side of the housing (4). The output shaft of the motor is fixedly connected to the first bevel gear (501). The second stirring shaft (505) is rotatably installed on the top inner wall of the housing (4). The first stirring shaft (504) is rotatably connected to the stirring bucket (1).

5. The apparatus according to claim 1, wherein the apparatus is characterized by: Both sets of connecting shafts (302) slide through to the top of the bucket lid (2), and the same set of pull rings (301) are fixedly installed on the top of the two sets of connecting shafts (302). An electric heating plate (15) is provided between the inner wall and the outer wall of the mixing bucket (1).

6. The apparatus according to claim 1, wherein the apparatus is characterized by: The top of the barrel cover (2) is fixedly equipped with a feed hopper (12), and the bottom of the evaporator (8) is fixedly equipped with a drain pipe (13).

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