Low-energy-consumption purification equipment for dibenzoyl tartaric acid

Abstract

The invention relates to the technical field of purification equipment, in particular to dibenzoyl tartaric acid low-energy-consumption purification equipment which comprises an equipment frame, a freezing crystallizing tank is rotatably connected to the equipment frame, a rotating seat is rotatably connected in the freezing crystallizing tank, and a mounting pipe is fixedly connected to one end of the rotating seat. A mounting pipe is arranged on the equipment frame, a crystal separation net seat is movably inserted into one end of the mounting pipe, an adjusting scraping mechanism is rotatably connected in the freezing crystallizing tank, a liquid discharge pipe is fixedly connected to one end of the freezing crystallizing tank in a penetrating manner, and a solution pre-cooling seat is fixedly arranged on the equipment frame. And automatic separation is carried out in a manner of overturning the freezing crystallization tank and rotating the crystallization separation net seat, so that the complex process of taking out crystal substances is avoided, the freezing environment is kept, the risk of melting the crystal substances is reduced, the separation efficiency is improved, the energy consumption is reduced, and the product purity is improved. The overall efficiency and effect of freezing crystallization purification are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of purification equipment technology, and in particular to a low-energy purification equipment for dibenzoyl tartaric acid. Background Technology

[0002] Benzoyl tartaric acid is a chemical compound commonly used to treat neurological disorders such as epilepsy. It is an antiepileptic drug that typically controls seizures by influencing brain nerve activity. Its chemical structure consists of a phenyl group and a tartaric acid molecule linked by a nitrogen atom. For the purification of benzoyl tartaric acid, freeze crystallization and recrystallization are the most common purification methods. These methods not only effectively separate impurities but also maintain the purity of benzoyl tartaric acid relatively well. The design goal of low-energy purification equipment is to reduce energy consumption during production by employing energy-saving technologies, while maintaining high product purity and high yield.

[0003] The prior art publication CN222131916U provides a tartaric acid purification device. By rotating the housing and the rotating rod, the operator can rotate the cover downwards to close the tank, insert the first transmission rod into the tank, and then start the drive motor to drive the first transmission rod to rotate. This causes the stirring paddle to stir the solution and chemicals inside the tank, making them evenly mixed, accelerating the chemical reaction rate, and improving the purification efficiency of the device for tartaric acid.

[0004] In the process of cryo-crystallization purification of benzoyl tartaric acid, the existing technology requires the crystallized benzoyl tartaric acid to be taken out of the frozen environment and separated from the mother liquor using separation equipment. However, the existing technology is not convenient for separation in a frozen environment, which leads to the crystals melting or even partially dissolving back into the solution when they are taken out, resulting in a decrease in the purity of the crystals.

[0005] In summary, the existing technology lacks a technique for separating the mother liquor under a frozen environment during the cryogenic crystallization purification of dibenzoyl tartaric acid. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by proposing a low-energy purification device for dibenzoyl tartaric acid.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a low-energy purification device for dibenzoyl tartaric acid, comprising a device frame, a freezing crystallization tank rotatably connected to the device frame, a rotating seat rotatably connected inside the freezing crystallization tank, an installation pipe fixedly connected to one end of the rotating seat, a crystallization separation mesh seat movably inserted into one end of the installation pipe, an adjusting scraping mechanism rotatably connected inside the freezing crystallization tank, a drain pipe fixedly connected through one end of the freezing crystallization tank, and a solution precooling seat fixedly mounted on the device frame.

[0008] Preferably, a motor A is fixedly connected to one end of the equipment frame, the output end of the motor A is fixedly connected to the freeze crystallizer, and an arc-shaped rack A is fixedly connected to one side of the equipment frame.

[0009] Preferably, a refrigeration pipe is installed on the inner wall of one end of the cryogenic crystallizer, a tank cover is rotatably connected to the outer wall of one side of the cryogenic crystallizer, a liquid filling pipe is rotatably connected to one end of the cryogenic crystallizer, and the liquid filling pipe is fixedly connected to the equipment frame.

[0010] Preferably, an annular rack is fixedly connected to the outer circumference of the rotating seat, and a drive wheel is meshed and driven on one side of the annular rack. The drive wheel is rotatably connected to the inner wall of the freeze crystallizer via a pin. One end of the drive wheel extends through the inner wall of the freeze crystallizer to the outside and is fixedly connected to a motor B. The motor B is fixedly connected to the outer wall of the freeze crystallizer.

[0011] Preferably, the inner wall of the bottom end of the mounting tube is provided with multiple snap-fit ​​blocks that slide through it. One end of each snap-fit ​​block has a beveled surface on its lower side, and the other end of each snap-fit ​​block is fixedly connected to a spring. The other end of the spring is fixedly connected to the inner wall of the bottom end of the mounting tube. The outer wall of the mounting tube is provided with a conical ring that slides through it and is in contact with one end of the snap-fit ​​block. The outer wall of the top end of the crystallization separation mesh seat is provided with multiple slots that are movably inserted into one end of the snap-fit ​​block.

[0012] Preferably, the adjusting scraping mechanism includes a universal joint, which is rotatably connected to the inner wall of the freeze crystallizer. An adjusting wheel is fixedly connected to the outer end of the universal joint, and the adjusting wheel is engaged with an arc-shaped rack A for transmission. A threaded rod is fixedly connected to the inner end of the universal joint, and the threaded rod is rotatably connected to the inner wall of the freeze crystallizer. An adjusting block is threadedly connected to the outer wall of the threaded rod, and an annular frame is fixedly connected to one end of the adjusting block.

[0013] Preferably, the annular frame is provided with a sliding groove, and two sliders are slidably fitted on the inner wall of the sliding groove. A U-shaped scraper is fixedly connected between the two sliders. The U-shaped scraper is slidably fitted through the rotating seat, and the outer wall of the U-shaped scraper is slidably in contact with the inner wall of one end of the freeze crystallizer.

[0014] Preferably, a valve body is fixedly connected to one end of the drain pipe, and a transmission wheel is fixedly connected to the valve stem of the valve body.

[0015] Preferably, a precooling cavity is formed on the inner wall of the outer side of the solution precooling seat, a pump body is fixedly installed at the top of the solution precooling seat, the input end of the pump body extends to the inner wall of the middle part of the solution precooling seat, the output end of the pump body is fixedly connected to one end of the liquid adding pipe, a liquid guide pipe is fixedly connected through one side of the precooling cavity, the top end of the liquid guide pipe is in sliding contact with the output end of the valve body, an arc-shaped rack B is fixedly connected to the outer wall of the liquid guide pipe, the arc-shaped rack B meshes with the transmission wheel, and a cover plate is threadedly connected to the solution precooling seat.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a crystallization separation screen in the freeze crystallizer and using the method of flipping the freeze crystallizer and rotating the crystallization separation screen for automatic separation, the complicated process of taking out the crystals is avoided, the freeze environment is maintained, the risk of crystal melting is reduced, the separation efficiency is improved, energy consumption is reduced, the operation process is simplified, and the purity of the product is improved, which greatly enhances the overall efficiency and effect of freeze crystallization purification. 2. By setting up an adjustable scraping mechanism, while the frozen crystallizer is tilting to separate crystals, the U-shaped scraper can be moved to contact the inner wall of the crystallization end of the frozen crystallizer. While the rotating seat drives the crystallization separation screen to perform centrifugal separation, the U-shaped scraper can be rotated to scrape off the crystals attached to the inner wall of the crystallization end of the frozen crystallizer. This can effectively improve the recovery rate, separation efficiency, and purity of the crystals, and reduce the difficulty of equipment maintenance and cleaning. It can not only improve production efficiency and reduce waste, but also reduce energy consumption, optimize the overall purification process, and improve product quality and economic benefits. 3. By setting up a solution precooling seat, the mother liquor after crystallization separation can be injected into the solution precooling seat to precool the solution to be crystallized. When the freeze crystallizer is freezing, the solution in the freeze crystallizer can reach the optimal crystallization temperature more quickly, reducing the cooling time and further improving the crystallization efficiency. This not only optimizes the entire crystallization process, but also reduces the cooling time, which not only reduces energy consumption, but also improves the efficiency, purity and recovery rate of crystallization separation. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of a low-energy purification device for dibenzoyl tartaric acid according to the present invention. Figure 2 This is a partial cross-sectional view of the overall structure of a low-energy purification device for dibenzoyl tartaric acid according to the present invention. Figure 3 This is a schematic diagram of the equipment frame structure of a low-energy purification device for dibenzoyl tartaric acid according to the present invention. Figure 4 This is a partial cross-sectional schematic diagram of the structure of a cryogenic crystallizer for a low-energy purification device for dibenzoyl tartaric acid according to the present invention. Figure 5 This is a schematic diagram of the rotating base structure of a low-energy purification device for dibenzoyl tartaric acid according to the present invention. Figure 6 This is a partial cross-sectional view of the installation pipe and crystallization separation mesh structure of a low-energy purification device for dibenzoyl tartaric acid according to the present invention. Figure 7 This is a schematic diagram of the adjustment and scraping mechanism of a low-energy purification device for dibenzoyl tartaric acid according to the present invention. Figure 8 This is a partial cross-sectional view of the drain pipe and solution precooling seat structure of a low-energy purification device for dibenzoyl tartaric acid according to the present invention.

[0018] The diagram shows: 1. Equipment frame; 2. Freezing crystallizer; 3. Rotating seat; 4. Mounting pipe; 5. Crystallization separation mesh seat; 6. Adjustment and scraping mechanism; 7. Drain pipe; 8. Solution precooling seat; 101. Motor A; 102. Arc-shaped rack A; 201. Refrigeration pipe; 202. Tank cover; 203. Liquid addition pipe; 301. Annular rack; 302. Drive wheel; 303. Motor B; 401. Clamping block; 4 02. Spring; 403. Conical ring; 501. Slot; 601. Universal joint; 602. Adjusting wheel; 603. Threaded rod; 604. Adjusting block; 605. Ring frame; 606. Sliding block; 607. U-shaped scraper rod; 608. Slide groove; 701. Valve body; 702. Drive wheel; 801. Precooling chamber; 802. Pump body; 803. Liquid guide pipe; 804. Arc-shaped rack B; 805. Cover plate. Detailed Implementation

[0019] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] like Figures 1-8The device shown is a low-energy purification equipment for dibenzoyl tartaric acid, including a frame 1, a freezing crystallizer 2 rotatably connected to the frame 1, a rotating seat 3 rotatably connected inside the freezing crystallizer 2, an installation pipe 4 fixedly connected to one end of the rotating seat 3, a crystallization separation mesh seat 5 movably inserted into one end of the installation pipe 4, an adjusting scraping mechanism 6 rotatably connected inside the freezing crystallizer 2, a drain pipe 7 fixedly connected through one end of the freezing crystallizer 2, and a solution precooling seat 8 fixedly mounted on the frame 1.

[0021] like Figure 3 As shown, a motor A101 is fixedly connected to one end of the equipment frame 1, and the output end of the motor A101 is fixedly connected to the freeze crystallizer 2. An arc-shaped rack A102 is fixedly connected to one side of the equipment frame 1.

[0022] like Figure 4 As shown, a refrigeration pipe 201 is installed on the inner wall of one end of the cryogenic crystallizer 2, and a tank cover 202 is rotatably connected to the outer wall of one side of the cryogenic crystallizer 2. A liquid inlet pipe 203 is rotatably connected to one end of the cryogenic crystallizer 2 and is fixedly connected to the equipment frame 1. A refrigeration compressor is installed inside the cryogenic crystallizer 2, and the refrigeration pipe 201 is connected to the refrigeration compressor.

[0023] like Figure 5 As shown, a ring rack 301 is fixedly connected to the outer circle of the rotating seat 3. A drive wheel 302 is meshed and driven on one side of the ring rack 301. The drive wheel 302 is rotatably connected to the inner wall of the freeze crystallizer 2 through a pin. One end of the drive wheel 302 extends through the inner wall of the freeze crystallizer 2 to the outside and is fixedly connected to a motor B303. The motor B303 is fixedly connected to the outer wall of the freeze crystallizer 2.

[0024] like Figure 6 As shown, multiple locking blocks 401 are slidably fitted through the inner wall of the bottom end of the mounting tube 4. One end of each locking block 401 has a sloping surface on its lower side, and the other end of each locking block 401 is fixedly connected to a spring 402. The other end of the spring 402 is also fixedly connected to the inner wall of the bottom end of the mounting tube 4. A conical ring 403 is slidably fitted onto the outer wall of the mounting tube 4, and the conical ring 403 is in slidable contact with one end of the locking block 401. Multiple slots 501 are formed on the outer wall of the top end of the crystallization separation mesh base 5, and these slots 501 are movably inserted into one end of the locking block 401. Pushing down the conical ring 403 causes it to contact and press against the locking block 401, causing the locking block 401 to move out of the slot 501.

[0025] By setting a crystallization separation mesh seat 5 inside the freeze crystallization tank 2 and using the flipping of the freeze crystallization tank 2 and the rotation of the crystallization separation mesh seat 5 for automatic separation, the complex process of removing crystals is avoided, the freeze environment is maintained, the risk of crystal melting is reduced, the separation efficiency is improved, energy consumption is reduced, the operation process is simplified, and the purity of the product is improved, which greatly enhances the overall efficiency and effect of freeze crystallization purification.

[0026] like Figure 7 As shown, the adjusting scraping mechanism 6 includes a universal joint 601, which is rotatably connected to the inner wall of the freeze crystallizer 2. An adjusting wheel 602 is fixedly connected to the outer end of the universal joint 601, and the adjusting wheel 602 engages with an arc-shaped rack A102 for transmission. A threaded rod 603 is fixedly connected to the inner end of the universal joint 601, and the threaded rod 603 is rotatably connected to the inner wall of the freeze crystallizer 2. An adjusting block 604 is threadedly connected to the outer wall of the threaded rod 603, and an annular frame 605 is fixedly connected to one end of the adjusting block 604. During the rotation process, the adjusting wheel 602 engages with the arc-shaped rack A102, thereby driving the threaded rod 603 connected to the universal joint 601 to rotate. This allows the threaded rod 603 to move the annular frame 605 connected to the adjusting block 604, causing the annular frame 605 to drive the U-shaped scraping rod 607 connected to the slider 606 to contact the inner wall of the crystallization end of the freeze crystallizer 2.

[0027] The ring frame 605 has a sliding groove 608. Two sliders 606 are slidably fitted on the inner wall of the sliding groove 608. A U-shaped scraper 607 is fixedly connected between the two sliders 606. The U-shaped scraper 607 is slidably fitted through the rotating seat 3. The outer wall of the U-shaped scraper 607 is slidably in contact with the inner wall of one end of the freezing crystallization tank 2.

[0028] like Figure 8 As shown, a valve body 701 is fixedly connected to one end of the drain pipe 7, and a transmission wheel 702 is fixedly connected to the valve stem of the valve body 701.

[0029] like Figure 8As shown, a precooling chamber 801 is formed on the inner wall of the outer side of the solution precooling seat 8. A pump body 802 is fixedly installed at the top of the solution precooling seat 8. The input end of the pump body 802 extends to the inner wall of the middle part of the solution precooling seat 8. The output end of the pump body 802 is fixedly connected to one end of the liquid adding pipe 203. A liquid guide pipe 803 is fixedly connected through one side of the precooling chamber 801. The top end of the liquid guide pipe 803 is in sliding contact with the output end of the valve body 701. An arc-shaped rack B804 is fixedly connected to the outer wall of the liquid guide pipe 803. The arc-shaped rack B804 meshes with the transmission wheel 702. A cover plate 805 is threadedly connected to the solution precooling seat 8. A valve is fixedly connected through one side of the bottom end of the precooling chamber 801. A sealing gasket is fixedly connected to the top end of the liquid guide pipe 803. Under the action of the arc-shaped rack B804, the valve stem connected to the transmission wheel 702 will rotate, causing the valve body 701 to open, so that the mother liquor in the freeze crystallizer 2 can be injected into the precooling chamber 801 through the drain pipe 7 and the guide pipe 803.

[0030] Working principle: When it is necessary to purify dibenzoyl tartaric acid in the mother liquor by freezing crystallization, the mother liquor in the solution precooling seat 8 is first injected into the freezing crystallization tank 2 through the liquid addition pipe 203 using the pump body 802. Then, the temperature in the freezing crystallization tank 2 is reduced by using the refrigeration pipe 201 and the refrigeration compressor, so that the dibenzoyl tartaric acid in the mother liquor can be crystallized. After sufficient crystallization, the connected freezing crystallizer 2 is rotated 180 degrees by the motor A101. During the rotation, the mother liquor and crystals are separated by the freezing crystallizer 2. At the same time, during the rotation, the adjusting wheel 602 will mesh with the arc-shaped rack A102, which will drive the threaded rod 603 connected to the universal joint 601 to rotate. The threaded rod 603 can drive the ring frame 605 connected to the adjusting block 604 to move. The ring frame 605 drives the U-shaped scraper rod 607 connected to the slider 606 to contact the inner wall of the crystallization end of the freezing crystallizer 2. Then, the motor B303 drives the drive wheel 302 to rotate, which in turn drives the rotating seat 3 connected to the ring rack 301 to rotate. This allows the rotating seat 3 to drive the crystallization separation screen 5 to rotate. The mother liquor in the crystallization separation screen 5 is fully separated by centrifugal force. At the same time, the rotating seat 3 drives the U-shaped scraper 607 to rotate, scraping off the crystals attached to the inner wall of the freeze crystallizer 2. At the same time, when the freezing crystallizer 2 is flipped, the output end of the valve body 701 will contact the top of the liquid guide pipe 803. Then, under the action of the arc rack B804, the valve rod connected to the transmission wheel 702 will rotate, causing the valve body 701 to open, so that the mother liquor in the freezing crystallizer 2 can be injected into the precooling chamber 801 through the drain pipe 7 and the liquid guide pipe 803 to precool the mother liquor to be purified in the solution precooling seat 8. After the mother liquor in the freezing crystallization tank 2 is drained, the tank cover 202 is opened and the conical ring 403 is pushed down so that the conical ring 403 contacts and squeezes the locking block 401, so that the locking block 401 is removed from the locking groove 501, and the crystallization separation mesh seat 5 can be removed to clean the dibenzoyl tartaric acid crystals therein.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-energy purification device for dibenzoyl tartaric acid, comprising a frame (1), characterized in that: A freezing crystallizer (2) is rotatably connected to the equipment frame (1). A rotating seat (3) is rotatably connected inside the freezing crystallizer (2). An installation pipe (4) is fixedly connected to one end of the rotating seat (3). A crystallization separation mesh seat (5) is movably inserted into one end of the installation pipe (4). An adjusting scraping mechanism (6) is rotatably connected inside the freezing crystallizer (2). A drain pipe (7) is fixedly connected through one end of the freezing crystallizer (2). A solution precooling seat (8) is installed and fixedly mounted on the equipment frame (1).

2. The low-energy purification equipment for dibenzoyl tartaric acid according to claim 1, characterized in that: One end of the equipment frame (1) is fixedly connected to a motor A (101), the output end of the motor A (101) is fixedly connected to the freeze crystallizer (2), and an arc-shaped rack A (102) is fixedly connected to one side of the equipment frame (1).

3. The low-energy purification equipment for dibenzoyl tartaric acid according to claim 1, characterized in that: A refrigeration pipe (201) is installed on the inner wall of one end of the cryogenic crystallizer (2), and a tank cover (202) is rotatably connected to the outer wall of one side of the cryogenic crystallizer (2). A liquid addition pipe (203) is rotatably connected to one end of the cryogenic crystallizer (2), and the liquid addition pipe (203) is fixedly connected to the equipment frame (1).

4. The low-energy purification equipment for dibenzoyl tartaric acid according to claim 1, characterized in that: A ring rack (301) is fixedly connected to the outer circle of the rotating seat (3). A drive wheel (302) is meshed and driven on one side of the ring rack (301). The drive wheel (302) is rotatably connected to the inner wall of the freeze crystallizer (2) through a pin. One end of the drive wheel (302) extends through the inner wall of the freeze crystallizer (2) to the outside and is fixedly connected to a motor B (303). The motor B (303) is fixedly connected to the outer wall of the freeze crystallizer (2).

5. The low-energy purification equipment for dibenzoyl tartaric acid according to claim 1, characterized in that: The bottom inner wall of the mounting tube (4) is provided with multiple snap-fit ​​blocks (401) that slide through it. One end of the snap-fit ​​block (401) has a sloping surface on its lower side. The other end of the snap-fit ​​block (401) is fixedly connected to a spring (402). The other end of the spring (402) is fixedly connected to the bottom inner wall of the mounting tube (4). The outer wall of the mounting tube (4) is provided with a conical ring (403) that slides through it. The conical ring (403) is in sliding contact with one end of the snap-fit ​​block (401). The top outer wall of the crystallization separation mesh seat (5) is provided with multiple slots (501). The slots (501) are movably inserted into one end of the snap-fit ​​block (401).

6. The low-energy purification equipment for dibenzoyl tartaric acid according to claim 2, characterized in that: The adjusting scraping mechanism (6) includes a universal joint (601), which is rotatably connected to the inner wall of the freeze crystallizer (2). An adjusting wheel (602) is fixedly connected to the outer end of the universal joint (601). The adjusting wheel (602) is meshed with the arc-shaped rack A (102). A threaded rod (603) is fixedly connected to the inner end of the universal joint (601). The threaded rod (603) is rotatably connected to the inner wall of the freeze crystallizer (2). An adjusting block (604) is threadedly connected to the outer wall of the threaded rod (603). A ring frame (605) is fixedly connected to one end of the adjusting block (604).

7. The low-energy purification equipment for dibenzoyl tartaric acid according to claim 6, characterized in that: The ring frame (605) is provided with a sliding groove (608). Two sliders (606) are slidably fitted on the inner wall of the sliding groove (608). A U-shaped scraper (607) is fixedly connected between the two sliders (606). The U-shaped scraper (607) is slidably fitted through the rotating seat (3). The outer wall of the U-shaped scraper (607) is slidably in contact with the inner wall of one end of the freezing crystallizer (2).

8. The low-energy purification equipment for dibenzoyl tartaric acid according to claim 1, characterized in that: A valve body (701) is fixedly connected to one end of the drain pipe (7), and a transmission wheel (702) is fixedly connected to the valve stem of the valve body (701).

9. The low-energy purification equipment for dibenzoyl tartaric acid according to claim 8, characterized in that: A precooling chamber (801) is provided on the inner wall of the outer side of the solution precooling seat (8). A pump body (802) is fixedly installed on the top of the solution precooling seat (8). The input end of the pump body (802) extends to the inner wall of the middle part of the solution precooling seat (8). The output end of the pump body (802) is fixedly connected to one end of the liquid adding pipe (203). A liquid guiding pipe (803) is fixedly connected through one side of the precooling chamber (801). The top end of the liquid guiding pipe (803) is slidably contacted with the output end of the valve body (701). An arc-shaped rack B (804) is fixedly connected to the outer wall of the liquid guiding pipe (803). The arc-shaped rack B (804) meshes with the transmission wheel (702). A cover plate (805) is threadedly connected to the solution precooling seat (8).

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