A vacuum purification device for high-purity N-vinyl pyrrolidone

Abstract

The utility model belongs to the technical field of vacuum purification heat regulation, and particularly relates to a vacuum purification device for high-purity N-vinyl pyrrolidone, comprising a workbench, the workbench is provided with a cavity, the cavity is provided with a regulating device, the regulating device comprises a rotating rod, the top of the workbench is fixedly connected with a vacuum pump, the top of the workbench is fixedly connected with a heat conducting plate, a distillation tank is placed on the top of the heat conducting plate, the top of the workbench is fixedly connected with a refrigerator and a plurality of collection tanks, the inner side wall of the cavity is fixedly connected with a sliding column, the inner side wall of the cavity is fixedly connected with a motor, the rotating rod is fixedly connected to the driving end of the motor, and the end of the rotating rod passes through the sliding column and is fixedly connected with a cam. The utility model drives the rotating rod to rotate by a motor, and the rotating rod drives the cam to rotate, and then changes the position of the connecting plate and the heating element by the cam, thereby controlling the heat transfer distance to perform temperature control and regulation.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum purification heat regulation, in particular to a vacuum purification device for high-purity N-vinyl pyrrolidone. Background Art

[0002] The vacuum purification device for high-purity N-vinyl pyrrolidone (NEP) is a device used to extract and purify NEP from its mixture or raw materials.

[0003] Vacuum distillation is a common separation and purification method, particularly suitable for high-boiling-point and heat-sensitive compounds such as NEP. Separation of NEP requires operation at a relatively high and stable temperature, requiring controlled heating rate and temperature to avoid decomposition or adverse reactions. Conventional vinyl pyrrolidone vacuum purification equipment cannot adjust the heating. If the temperature is too high and cannot be adjusted in time, the separation process will be affected.

[0004] In order to solve the above problems, we proposed a vacuum purification device for high-purity N-vinyl pyrrolidone. Utility Model Content

[0005] The purpose of the utility model is to solve the problems in the background technology and to propose a vacuum purification device for high-purity N-vinyl pyrrolidone.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a vacuum purification device for high-purity N-vinylpyrrolidone, comprising a workbench, the workbench is provided with a cavity, an adjusting device is provided in the cavity, the adjusting device comprises a rotating rod, a vacuum pump is fixedly connected to the top of the workbench, a heat conduction plate is fixedly connected to the top of the workbench, a distillation tank is placed on the top of the heat conduction plate, a refrigerator and a plurality of collection tanks are fixedly connected to the top of the workbench, a sliding column is fixedly connected to the inner side wall of the cavity, a motor is fixedly connected to the inner side wall of the cavity, the rotating rod is fixedly connected to the driving end of the motor, the end of the rotating rod passes through the sliding column and is fixedly connected to a cam, the outer wall of the sliding column is slidingly sleeved with a connecting plate, the outer wall of the connecting plate is fixedly connected to a heating element, and the cam is in contact with the connecting plate.

[0007] In the above-mentioned vacuum purification device for high-purity N-vinylpyrrolidone, the output end of the vacuum pump is fixedly connected to a sealing tube 1, and the sealing tube 1 is fixedly connected to the outer wall of the distillation tank and extends to the inside of the distillation tank. The top of the distillation tank is fixedly connected to a sealing tube 2 fixedly connected to the input end of the refrigerator. The number of the multiple collecting tanks is three, and the three collecting tanks are evenly arranged on the top of the workbench. The output end of the refrigerator is fixedly connected to a sealing tube 3, and the outer wall of the sealing tube 3 is fixedly connected to two sealing tubes 4. The sealing tube 3 and the two sealing tubes 4 are respectively fixedly connected to the tops of the three collecting tanks.

[0008] In the above-mentioned vacuum purification device for high-purity N-vinyl pyrrolidone, the vacuum pump is located on the left side of the distillation tank, the refrigerator is located on the right side of the distillation tank, and the multiple collection tanks are located on the right side of the refrigerator.

[0009] In the above-mentioned vacuum purification device for high-purity N-vinylpyrrolidone, the cavity is located directly below the heat-conducting plate, the top of the sliding column is fixedly connected to a limit plate, and the outer wall of the distillation tank is fixedly connected to a temperature display.

[0010] In the above-mentioned vacuum purification device for high-purity N-vinyl pyrrolidone, the sealing tube 1, the sealing tube 2, the sealing tube 3 and the sealing tube 4 are all made of glass.

[0011] In the above-mentioned vacuum purification device for high-purity N-vinyl pyrrolidone, the heating element is configured to be circular.

[0012] Compared with the existing technology, the advantages of this high-purity N-vinyl pyrrolidone vacuum purification device are:

[0013] The utility model drives a rotating rod to rotate by a motor, and the rotating rod drives a cam to rotate, and then changes the position of a connecting plate and a heating element through the cam, thereby controlling the heat transfer distance and performing temperature control and regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of a vacuum purification device for high-purity N-vinyl pyrrolidone proposed in the present invention;

[0015] Figure 2 This is a right side view of a vacuum purification device for high-purity N-vinyl pyrrolidone proposed in the present invention;

[0016] Figure 3 This is a front cross-sectional view of a vacuum purification device for high-purity N-vinyl pyrrolidone proposed in the utility model.

[0017] In the figure: 1 working table, 2 vacuum pump, 3 heat conducting plate, 4 sealing tube 1, 5 temperature display, 6 distillation tank, 7 refrigerator, 8 sealing tube 2, 9 sealing tube 3, 10 sealing tube 4, 11 collecting tank, 12 motor, 13 rotating rod, 14 sliding column, 15 cam, 16 connecting plate, 17 limit plate, 18 heating element. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figure 1-Figure 3 , a vacuum purification device for high-purity N-vinyl pyrrolidone, comprising a workbench 1, the workbench 1 is provided with a cavity, a regulating device is provided in the cavity, the regulating device comprises a rotating rod 13, a vacuum pump 2 is fixedly connected to the top of the workbench 1, a heat conducting plate 3 is fixedly connected to the top of the workbench 1, a distillation tank 6 is placed on the top of the heat conducting plate 3, a refrigerator 7 and a plurality of collecting tanks 11 are fixedly connected to the top of the workbench 1, a sliding column 14 is fixedly connected to the inner side wall of the cavity, a motor 12 is fixedly connected to the inner side wall of the cavity, the rotating rod 13 is fixedly connected to the driving end of the motor 12, the end of the rotating rod 13 passes through the sliding column 14 and is fixedly connected to a cam 15, the outer wall sliding sleeve of the sliding column 14 is provided with a connecting plate 16, the outer wall of the connecting plate 16 is fixedly connected to a heating element 18, the cam 15 is in contact with the connecting plate 16, the vacuum pump 2 is located on the left side of the distillation tank 6, the refrigerator 7 is located on the right side of the distillation tank 6, the plurality of collecting tanks 11 are located on the right side of the refrigerator 7, the cavity is located on the heat conducting plate 3 Directly below, the top of the sliding column 14 is fixedly connected to the limit plate 17, and the outer wall of the distillation tank 6 is fixedly connected to the temperature display 5. The heating element 18 is set to a circular shape. The limit plate 17 can prevent the connecting plate 16 from separating from the sliding column 14. The temperature display 5 can display the temperature inside the distillation tank 6. The heat conducting plate 3 can quickly conduct the temperature of the heating element 18 to the distillation tank 6. The motor 12 drives the rotating rod 13 to rotate, and the rotating rod 13 drives the cam 15 to rotate. When the cam 15 rotates to the left or right, it only needs to be rotated to be parallel to the bottom of the cavity. When the cam 15 is parallel to the bottom of the cavity, the connecting plate 16 will move downward due to gravity, and will always be in contact with the cam 15 during the movement. At this time, the heating element 18 will also move downward, thereby lengthening the heat transfer distance and lowering the temperature of the distillation tank 6. When the convex point of the cam 15 is upward, the connecting plate 16 will drive the heating element 18 to move to the top of the sliding column 14, thereby increasing the heat in the distillation tank 6, thereby completing the adjustment work.

[0020] The output end of the vacuum pump 2 is fixedly connected to a sealing tube 4, which is fixedly connected to the outer wall of the distillation tank 6 and extends to the inside of the distillation tank 6. The top of the distillation tank 6 is fixedly connected to a sealing tube 2 8 which is fixedly connected to the input end of the refrigerator 7. There are three collecting tanks 11, and the three collecting tanks 11 are evenly arranged on the top of the workbench 1. The output end of the refrigerator 7 is fixedly connected to a sealing tube 3 9, and the outer wall of the sealing tube 3 9 is fixedly connected to two sealing tubes 4 10. The sealing tube 3 9 and the two sealing tubes 4 10 are respectively fixedly connected to the tops of the three collecting tanks 11. The sealing tube 1 4, the sealing tube 2 8, the sealing tube 3 9, and the sealing tube 4 10 are all made of glass, and glass has a good sealing effect.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vacuum purification device for high-purity N-vinyl pyrrolidone, comprising a workbench (1), characterized in that: The workbench (1) is provided with a cavity, in which an adjustment device is provided, the adjustment device comprises a rotating rod (13), a vacuum pump (2) is fixedly connected to the top of the workbench (1), a heat conducting plate (3) is fixedly connected to the top of the workbench (1), a distillation tank (6) is placed on the top of the heat conducting plate (3), a refrigerator (7) and a plurality of collection tanks (11) are fixedly connected to the top of the workbench (1), a sliding column (14) is fixedly connected to the inner wall of the cavity, a motor (12) is fixedly connected to the inner wall of the cavity, the rotating rod (13) is fixedly connected to the driving end of the motor (12), the end of the rotating rod (13) passes through the sliding column (14) and is fixedly connected to a cam (15), the outer wall of the sliding column (14) is slidingly sleeved with a connecting plate (16), the outer wall of the connecting plate (16) is fixedly connected to a heating element (18), and the cam (15) is in contact with the connecting plate (16).

2. A vacuum purification device for high-purity N-vinyl pyrrolidone according to claim 1, characterized in that: The output end of the vacuum pump (2) is fixedly connected to a sealing tube 1 (4), the sealing tube 1 (4) is fixedly connected to the outer wall of the distillation tank (6) and extends into the interior of the distillation tank (6), the top of the distillation tank (6) is fixedly connected to a sealing tube 2 (8) fixedly connected to the input end of the refrigerator (7), the number of the plurality of collecting tanks (11) is three, the three collecting tanks (11) are evenly arranged on the top of the workbench (1), the output end of the refrigerator (7) is fixedly connected to a sealing tube 3 (9), the outer wall of the sealing tube 3 (9) is fixedly connected to two sealing tubes 4 (10), the sealing tube 3 (9) and the two sealing tubes 4 (10) are respectively fixedly connected to the tops of the three collecting tanks (11).

3. A vacuum purification device for high-purity N-vinyl pyrrolidone according to claim 1, characterized in that: The vacuum pump (2) is located on the left side of the distillation tank (6), the refrigerator (7) is located on the right side of the distillation tank (6), and the plurality of collection tanks (11) are located on the right side of the refrigerator (7).

4. A vacuum purification device for high-purity N-vinyl pyrrolidone according to claim 1, characterized in that: The cavity is located directly below the heat conducting plate (3), the top of the sliding column (14) is fixedly connected to a limit plate (17), and the outer side wall of the distillation tank (6) is fixedly connected to a temperature display (5).

5. A vacuum purification device for high-purity N-vinyl pyrrolidone according to claim 2, characterized in that: The sealing tube 1 (4), the sealing tube 2 (8), the sealing tube 3 (9) and the sealing tube 4 (10) are all made of glass.

6. A vacuum purification device for high-purity N-vinyl pyrrolidone according to claim 1, characterized in that: The heating element (18) is arranged in a circular shape.

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