Stirring device for distribution, crystallization and purification of difluorobenzophenone

Abstract

The utility model discloses a stirring device for difluorobenzophenone distribution, crystallization and purification, and relates to the technical field of stirring devices, and the key points of the technical scheme are as follows: the stirring device comprises a cover body arranged at the head of a difluorobenzophenone distribution, crystallization and purification tank body, and a repeated lifting assembly for driving a stirring assembly to move up and down is arranged on the cover body; the stirring assembly comprises a motor A for driving a rotating rod to rotate, a frame type stirring blade is fixedly connected to the outer side wall of the rotating rod, a paddle type stirring blade is installed at the bottom end of the rotating rod, and the paddle type stirring blade can make a solution and a mixture flow axially, that is, the solution and the mixture rise in the direction of a stirring shaft; the stirring assembly has the effects that the stirring assembly can cover the interior of the difluorobenzophenone distribution, crystallization and purification tank body more comprehensively, the defect of stirring at a single position is overcome, and a mixture and a solvent at the bottom of the tank body can be stirred.

Description

Technical Field

[0001] The utility model relates to the field of stirring devices, and more specifically, it relates to a stirring device for distribution crystallization and purification of difluorobenzophenone. Background Art

[0002] Difluorobenzophenone is an important organic synthesis intermediate, widely used in polymer materials, medicines, pesticides and other fields. In the production process of difluorobenzophenone, in order to ensure product quality, it is usually necessary to remove impurities through crystallization purification.

[0003] In the prior art, the design of the stirring device often does not fully consider the special needs of the difluorobenzophenone crystallization process. For example, the traditional stirring device can only stir a single place and cannot fully cover the inside of the difluorobenzophenone distribution crystallization purification tank, resulting in uneven distribution of crystal size, affecting the distribution crystallization purification effect. At the same time, excessive stirring in a single place will also cause crystal breakage, reducing the overall quality of the product. Secondly, during stirring, the mixture and solvent at the bottom of the tank are difficult to be stirred (in order to avoid hitting the bottom, the stirring blade is generally a distance away from the bottom), which also affects the distribution crystallization purification effect.

[0004] Therefore, in order to solve the above technical problems, the present application proposes a stirring device for distributed crystallization purification of difluorobenzophenone. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model aims to provide a stirring device for distributed crystallization and purification of difluorobenzophenone.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stirring device for difluorobenzophenone distributed crystallization purification, comprising a cover body installed on the head of a difluorobenzophenone distributed crystallization purification tank body, the cover body being provided with a repeated lifting assembly for driving a stirring assembly to move up and down; the stirring assembly comprising a motor A for driving a rotating rod to rotate, a frame-type stirring blade being fixedly connected to the outer side wall of the rotating rod, a paddle-type stirring blade being installed at the bottom end of the rotating rod, the paddle-type stirring blade being able to cause an axial flow of a solution and a mixture, that is, the solution and the mixture rise along the direction of the stirring shaft, thereby cooperating with the frame-type stirring blade for stirring.

[0007] Preferably, the repeated lifting component includes a bearing embedded and fixed inside the cover body, a reciprocating screw is fixedly connected to the inner ring of the bearing, a movable block is transmission-connected to the outer wall of the reciprocating screw, the inner top wall of the cover body is located behind the reciprocating screw and is fixedly connected to a limiting component that maintains direct movement of the movable block, an assembly component that cooperates with each other is installed between the reciprocating screw and the motor A, the top of the cover body is fixed to the motor B through a support plate, and the transmission shaft of the motor B is fixed to the top of the reciprocating screw.

[0008] Preferably, the limiting component includes a guide rail fixed to the inner top wall of the cover body and located behind the reciprocating screw rod, and the back of the movable block is slidably connected to the guide rail through a slider to maintain the linear movement of the movable block.

[0009] Preferably, the surface of the assembly component is fixed to a vertical plate and a movable plate in the middle part of the surface of the movable block, rectangular columns are welded on both sides of the vertical plate away from the movable block, screws A are welded on both sides of the vertical plate close to the movable block, there are two movable plates, rectangular through grooves and circular through grooves are respectively provided inside, so that they can move back and forth along the screw A and the rectangular column, nuts A are threadedly connected on the outer side walls of the screw A, rectangular groove seats A are fixedly connected on both sides of the motor A, and the side ends of the movable plate are fixedly connected to the rectangular block A through connecting rods, which is conducive to cleaning the stirring blades on the stirring assembly.

[0010] Preferably, the rectangular column and the head of the screw rod A are fixedly connected with a baffle to prevent the nut A and the movable plate from detaching from the rectangular column and the screw rod A, thereby preventing them from being lost.

[0011] Preferably, the bottom of the rotating rod is detachably connected to a paddle-type stirring blade, which is convenient for replacement when damaged.

[0012] Preferably, the bottom end of the rotating rod is fixedly connected to a rectangular block B, and a rectangular groove seat B is inserted on the surface of the rectangular block B, the bottom end of the rectangular block B is fixedly connected to a screw B, a through hole is provided at the bottom of the rectangular groove seat B for the screw B to pass through, a nut B is threadedly connected to the outer wall of the screw B, and the paddle-type stirring blade is fixed on the outer wall of the rectangular groove seat B.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model stirs the solution and mixture in the tank body by repeatedly lifting the component to drive the stirring component to move up and down repeatedly, so as to promote the distribution crystallization purification of difluorobenzophenone, so that the stirring component can more comprehensively cover the inside of the difluorobenzophenone distribution crystallization purification tank body, eliminate the deficiency of stirring at a single position, and thus solve the problem that the traditional stirring device in the background technology can only stir a single place.

[0015] 2. In the utility model, when the stirring assembly is repeatedly lifted and lowered to the bottom of the tank, the paddle-type stirring blades will lift the solution and mixture at the bottom of the tank along the direction of the stirring shaft, and then the frame-type stirring blades will stir them to avoid the mixture and solvent at the bottom being difficult to stir, which ultimately affects the effect of the distribution, crystallization and purification of difluorobenzophenone, thereby solving the problem in the background technology that the mixture and solvent at the bottom of the tank are difficult to stir.

[0016] 3. The stirring assembly and the repeated lifting assembly of the utility model are easy to disassemble and assemble, which is very conducive to cleaning the stirring blades on the stirring assembly. In addition, the paddle-type stirring blades on the stirring assembly can also be disassembled and assembled separately, which is convenient for replacement in case of failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the bottom structure of the cover body of the utility model;

[0020] Figure 3 For this utility model Figure 1 A magnified view of the structure at A;

[0021] Figure 4 For this utility model Figure 2 A magnified view of the structure at B;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the connection between the rectangular block B and the rectangular through-slot seat B in the utility model.

[0023] In the figure: 1. cover body; 2. stirring assembly; 201. motor A; 202. rotating rod; 203. frame stirring blade; 204. paddle stirring blade; 3. repeated lifting assembly; 301. bearing; 302. reciprocating screw rod; 303. motor B; 304. movable block; 305. limiting component; 3051. guide rail; 3052. slider; 306. support plate; 4. assembly assembly; 401. vertical plate; 402. rectangular column; 403. screw A; 404. movable plate; 405. rectangular through groove; 406. circular through groove; 407. nut A; 408. rectangular groove seat A; 409. connecting rod; 410. rectangular block A; 411. baffle; 5. rectangular block B; 6. rectangular groove seat B; 7. screw B; 8. through hole; 9. nut B. DETAILED DESCRIPTION

[0024] like Figure 1-5 As shown, the utility model provides a stirring device for distributed crystallization and purification of difluorobenzophenone, comprising a cover body 1 installed at the head of a difluorobenzophenone distributed crystallization and purification tank body, and a repeated lifting component 3 for driving a stirring component 2 to move up and down is installed on the cover body 1; after the cover body 1 is installed on the tank body, the repeated lifting component 3 drives the stirring component 2 to move up and down repeatedly to stir the solution and mixture in the tank body, so as to promote the distributed crystallization and purification of difluorobenzophenone.

[0025] The repeated lifting component 3 includes a bearing 301 embedded and fixed inside the cover body 1, a reciprocating screw 302 is fixedly connected to the inner ring of the bearing 301, a movable block 304 is transmission-connected to the outer wall of the reciprocating screw 302, an inner top wall of the cover body 1 is located behind the reciprocating screw 302 and is fixedly connected to a limiting component 305 that maintains the direct movement of the movable block 304, an assembly component 4 that cooperates with each other is installed between the reciprocating screw 302 and the motor A201, the top of the cover body 1 is fixed to the motor B303 through a support plate 306, the transmission shaft of the motor B303 is fixed to the top of the reciprocating screw 302, the limiting component 305 includes a guide rail 3051 fixed to the inner top wall of the cover body 1 and located behind the reciprocating screw 302, The back of the movable block 304 is slidably connected to the guide rail 3051 through the slider 3052, that is, the reciprocating screw 302 is driven to rotate by the motor A201, the reciprocating screw 302 drives the inner ring of the bearing 301 to rotate, the inner ring of the bearing 301 rotates along its outer ring (the outer ring of the bearing 301 is fixed to the cover body 1), the reciprocating screw 302 drives the movable block 304 to move up and down, the movable block 304 drives the slider 3052 to move up and down, the slider 3052 slides linearly up and down along the guide rail 3051 to maintain the linear movement of the movable block 304, and at the same time the movable block 304 drives the stirring assembly 2 to move up and down, thereby realizing the repeated up and down movement of the stirring assembly 2, so that the stirring assembly 2 can more comprehensively cover the interior of the difluorobenzophenone distribution crystallization purification tank, eliminating the shortcomings of stirring at a single position.

[0026] The stirring assembly 2 includes a motor A201 (the motor A201 is powered by a battery) for driving a rotating rod 202 to rotate. A frame stirring blade 203 is fixedly connected to the outer wall of the rotating rod 202. A paddle stirring blade 204 is installed at the bottom end of the rotating rod 202. The paddle stirring blade 204 can make the solution and the mixture flow axially, that is, the solution and the mixture rise along the direction of the stirring shaft, so as to cooperate with the frame stirring blade 203 for stirring. That is, the motor A201 drives the rotating rod 202 to rotate, and the rotating rod 202 drives the frame stirring blade 203 and the paddle stirring blade 204 to rotate. When the stirring assembly 2 is repeatedly lifted by the lifting assembly 3 and driven to the bottom of the tank body, the paddle stirring blade 204 will raise the solution and the mixture at the bottom of the tank body along the direction of the stirring shaft, and then the frame stirring blade 203 will stir them to avoid the mixture and the solvent at the bottom of the tank body from being difficult to stir, which ultimately affects the effect of the distributed crystallization and purification of difluorobenzophenone.

[0027] Since the stirring blades on the stirring assembly 2 need to be cleaned frequently, the present invention realizes the disassembly and assembly of the stirring assembly 2 and the repeated lifting assembly 3 by means of an assembly assembly 4. The specific structure of the stirring assembly 2 is as follows:

[0028] The surface of the assembly component 4 is fixed to a vertical plate 401 and a movable plate 404 in the middle part of the surface of the movable block 304, rectangular columns 402 are welded on both sides of the vertical plate 401 away from the movable block 304, screws A403 are welded on both sides of the vertical plate 401 close to the movable block 304, there are two movable plates 404, rectangular through grooves 405 and circular through grooves 406 are respectively opened inside, so that they can move back and forth along the screw A403 and the rectangular column 402, nuts A407 are threadedly connected on the outer wall of the screw A403, rectangular groove seats A408 are fixedly connected on both sides of the motor A, and the side ends of the movable plate 404 are fixedly connected to the rectangular block A410 through connecting rods 409.

[0029] That is, the movable plates 404 on both sides are pushed to move toward the vertical plate 401. The movable plates 404 on both sides slide linearly along the rectangular column 402 through the rectangular through slots 405 thereon. At the same time, the screw A403 can be passed through the circular through slots 406 thereon. The movable plates 404 drive the rectangular block A410 to move toward the middle part through the connecting rod 409, so that the rectangular block A410 is inserted into the rectangular groove seat A408. Then, the nut A407 is rotated clockwise so that the nut A407 is pressed against the surface of the movable plate 404. Thereby, the rectangular block A410 is fixed in the rectangular groove seat A408, thereby completing the fixation between the motor A201 and the movable block 304. Similarly, the nut A407 is rotated counterclockwise so that the nut A407 no longer presses against the surface of the movable plate 404, pushing the movable plate 404 to move in the opposite direction, and the rectangular block A410 is pulled out of the rectangular groove seat A408, so that the stirring component 2 and the repeated lifting component 3 can be disassembled. The disassembly and assembly are very convenient, which is conducive to the cleaning of the stirring blades on the stirring component 2 (convenient to disassemble and clean).

[0030] In addition, the heads of the rectangular column 402 and the screw rod A403 are fixedly connected with a baffle 411 to prevent the nut A407 and the movable plate 404 from being separated from the rectangular column 402 and the screw rod A403, thereby preventing them from being lost.

[0031] Furthermore, the bottom of the rotating rod 202 is detachably connected to the paddle-type stirring blade 204, and the following is the specific detachable structure: the bottom end of the rotating rod 202 is fixedly connected to a rectangular block B5, and a rectangular groove seat B6 is inserted on the surface of the rectangular block B5, the bottom end of the rectangular block B5 is fixedly connected to a screw B7, and the bottom of the rectangular groove seat B6 is provided with a through hole 8 for the screw B7 to pass through, and a nut B9 is threadedly connected to the outer wall of the screw B7, and the paddle-type stirring blade 204 is fixed on the outer wall of the rectangular groove seat B6.

[0032] That is, the rectangular groove seat B6 is inserted into the rectangular block B5. After the insertion is completed, the screw B7 on the rectangular block B5 just passes through the through hole 8 on the rectangular groove seat B6. Then, the nut B9 is turned clockwise to install the nut B9 on the screw B7. The nut B9 slowly presses against the bottom end of the rectangular groove seat B6 to complete the fixation of the paddle stirring blade 204 and the rotating rod 202. Similarly, when disassembling, you only need to turn the nut B9 counterclockwise to remove the nut B9, and then remove the rectangular groove seat B6 from the rectangular block B5 to realize the disassembly of the paddle stirring blade 204. The disassembly and assembly are very simple, and the paddle stirring blade 204 is convenient to replace when it is damaged.

[0033] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A stirring device for difluorobenzophenone distributed crystallization purification, comprising a cover body (1) installed at the head of a difluorobenzophenone distributed crystallization purification tank body, characterized in that: The cover body (1) is provided with a repetitive lifting component (3) for driving the stirring component (2) to move up and down; The stirring assembly (2) comprises a motor A (201) for driving a rotating rod (202) to rotate; a frame-type stirring blade (203) is fixedly connected to the outer wall of the rotating rod (202); a paddle-type stirring blade (204) is installed at the bottom end of the rotating rod (202); the paddle-type stirring blade (204) can cause the solution and the mixture to generate axial flow, that is, the solution and the mixture rise along the direction of the stirring shaft, thereby cooperating with the frame-type stirring blade (203) to perform stirring.

2. A stirring device for distributed crystallization and purification of difluorobenzophenone according to claim 1, characterized in that: The reciprocating lifting component (3) comprises a bearing (301) embedded and fixed inside the cover body (1); a reciprocating screw (302) is fixedly connected to the inner ring portion of the bearing (301); a movable block (304) is transmission-connected to the outer wall of the reciprocating screw (302); an inner top wall of the cover body (1) is located behind the reciprocating screw (302) and is fixedly connected to a limiting component (305) for maintaining direct movement of the movable block (304); an assembly component (4) that cooperates with each other is installed between the reciprocating screw (302) and the motor A (201); the top end of the cover body (1) is fixed to the motor B (303) via a support plate (306); and the transmission shaft portion of the motor B (303) is fixed to the top end of the reciprocating screw (302).

3. A stirring device for distributed crystallization and purification of difluorobenzophenone according to claim 2, characterized in that: The limiting component (305) comprises a guide rail (3051) fixed to the inner top wall of the cover body (1) and located behind the reciprocating screw rod (302); the back of the movable block (304) is slidably connected to the guide rail (3051) via a slider (3052).

4. A stirring device for distributed crystallization and purification of difluorobenzophenone according to claim 2, characterized in that: The surface of the assembly component (4) is fixed to a vertical plate (401) and a movable plate (404) in the middle of the surface of the movable block (304); rectangular columns (402) are welded to the parts of the vertical plate (401) away from the movable block (304) on both sides; screw rods A (403) are welded to the parts of the vertical plate (401) close to the movable block (304) on both sides; there are two movable plates (404), each of which is provided with a rectangular through groove (405) and a circular through groove (406) so that the movable plates (404) can move back and forth along the screw rod A (403) and the rectangular column (402); nuts A (407) are threadedly connected to the outer wall of the screw rod A (403); rectangular groove seats A (408) are fixedly connected to the two sides of the motor A (201); and the side ends of the movable plate (404) are fixedly connected to the rectangular block A (410) via connecting rods (409).

5. A stirring device for distributed crystallization and purification of difluorobenzophenone according to claim 4, characterized in that: The rectangular column (402) and the head of the screw rod A (403) are both fixedly connected with a baffle (411).

6. A stirring device for distributed crystallization and purification of difluorobenzophenone according to claim 1, characterized in that: The bottom of the rotating rod (202) is detachably connected to a paddle-type stirring blade (204).

7. A stirring device for distributed crystallization and purification of difluorobenzophenone according to claim 6, characterized in that: The bottom end of the rotating rod (202) is fixedly connected to a rectangular block B (5), and a rectangular groove seat B (6) is inserted on the surface of the rectangular block B (5). The bottom end of the rectangular block B (5) is fixedly connected to a screw rod B (7). The bottom of the rectangular groove seat B (6) is provided with a through hole (8) for the screw rod B (7) to pass through. A nut B (9) is threadedly connected to the outer wall of the screw rod B (7). The paddle-type stirring blade (204) is fixed to the outer wall of the rectangular groove seat B (6).

Images