Vacuum optimization device for propylene carbonate production

Abstract

The utility model discloses a vacuum optimization device for propylene carbonate production, which belongs to the technical field of propylene carbonate production, and comprises a support seat and a pump shell arranged above the support seat and used for propylene carbonate production, a stepping motor is mounted on the outer wall of one side of the support seat, a driving shaft is fixed at the output end of the stepping motor, and a vacuum pump is mounted on the driving shaft. A driving bevel gear is fixed to the end face of the driving shaft, a rotating column is rotationally connected into the supporting seat, a driven bevel gear meshed with the driving bevel gear is fixed to the outer wall of the rotating column, a mounting frame is fixed to the surface of the rotating column, the pump shell is fixed into the mounting frame, and a gear box is fixed to the outer wall of one side of the pump shell. A first rotating shaft and a second rotating shaft are rotationally connected into the gearbox. According to the vacuum optimization device for propylene carbonate production, connection between the mounting frame and the pump shell can be rapidly completed according to processing requirements, and the production efficiency of propylene carbonate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of propylene carbonate production, and in particular relates to a vacuum optimization device used for propylene carbonate production. Background Art

[0002] Propylene carbonate is a colorless, odorless, flammable liquid that is miscible with ether, acetone, benzene, chloroform, vinyl acetate, etc., and soluble in water and carbon tetrachloride. It has a strong ability to absorb carbon dioxide and is stable in nature. It is industrially prepared by adding propylene oxide to carbon dioxide under a certain pressure and then distilling it under reduced pressure. It can be used as an oily solvent, spinning solvent, olefin, aromatic extractant, carbon dioxide absorbent, dispersant for water-soluble dyes and pigments, etc. In the production process of propylene carbonate, due to the high boiling point of propylene carbonate, negative pressure distillation is used to reduce energy consumption and the generation of side reactions. However, the traditional vacuum device is a reciprocating vacuum pump, which has a high working noise and a high failure rate.

[0003] Reference authorization announcement number: CN213235440U Chinese authorized patent: A propylene carbonate vacuum optimization device. The utility model is equipped with a second screw that rotates between two second substrates to facilitate adjustment of the base. The second screw thread is equipped with a base to facilitate installation of a dry screw vacuum pump and adjustment of the dry screw vacuum pump. A storage groove is provided above the first substrate to facilitate storage of the dry screw vacuum pump, thereby reducing the probability of dust inside the dry screw vacuum pump during shutdown.

[0004] Since the angle of the base is not easy to adjust, during the installation of the pump casing, once the position of the pump casing or the base does not correspond, the position of the base or the pump casing needs to be adjusted, which not only affects the installation of the pump casing, but also affects the subsequent work efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum optimization device for the production of propylene carbonate, so as to solve the problem raised in the above-mentioned background technology that during the installation of the pump casing, once the positions of the pump casing or the base do not correspond, it is necessary to adjust the position of the base or the pump casing, which not only affects the installation of the pump casing, but also affects the subsequent work efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum optimization device for propylene carbonate production, comprising a support seat and a pump housing for propylene carbonate production arranged above the support seat, a stepper motor is installed on one side outer wall of the support seat, a driving shaft is fixed to the output end of the stepper motor, and an active bevel gear is fixed to the end face of the driving shaft, a rotating column is rotatably connected in the support seat, a driven bevel gear meshing with the active bevel gear is fixed to the outer wall of the rotating column, and a mounting frame is fixed to the surface of the rotating column, the pump housing is fixed in the mounting frame, a gear box is fixed to one side outer wall of the pump housing, and a rotating shaft one and a rotating shaft two are rotatably connected in the gear box respectively.

[0007] In a further embodiment, a driving gear is fixed to the outer wall of the rotating shaft 1, and a driven gear meshing with the driving gear is fixed to the outer wall of the rotating shaft 2.

[0008] In a further embodiment, a protective cover is fixed to the outer wall of the pump housing on a side away from the gear box, and a spiral rod is fixed to the outer walls of the rotating shaft one and the rotating shaft two.

[0009] In a further embodiment, a filter is disposed on the upper side of the gear box, and a muffler is disposed on the lower side of the gear box.

[0010] In a further embodiment, a plurality of support columns are fixed to the bottom of the mounting frame, a rotation groove is provided at the bottom of the support column, and a limit ball is rotatably connected in the rotation groove at the bottom of the support column.

[0011] In a further embodiment, a limiting plate for supporting the driving shaft is fixed inside the support seat, and two mounting blocks are fixed to the outer walls on both sides of the support seat.

[0012] Technical effects and advantages of the utility model:

[0013] The vacuum optimization device for propylene carbonate production can drive the active bevel gear to rotate through the stepping motor, and cooperate with the driven bevel gear to drive the mounting frame to rotate, so that the mounting frame can be quickly rotated to a position matching the pump casing, thereby quickly completing the connection between the mounting frame and the pump casing. At the same time, in the subsequent processing process, the angle of the pump casing can be quickly adjusted according to actual processing requirements to meet different processing requirements;

[0014] Filtering is performed through a filter to prevent impurities from entering the interior of the pump casing, thereby improving safety. At the same time, a muffler is installed at the outlet to reduce the noise generated by the equipment when it is working, thereby preventing the workers from being affected by excessive noise. The vacuum optimization device for propylene carbonate production can quickly complete the connection between the mounting frame and the pump casing according to processing requirements, thereby improving the production efficiency of propylene carbonate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the support seat of the utility model;

[0018] Figure 3 It is a cross-sectional view of the support base and the mounting frame of the utility model;

[0019] Figure 4 It is a cross-sectional view of the pump casing of the utility model.

[0020] In the figure: 1. support seat; 2. stepper motor; 3. drive shaft; 4. active bevel gear; 5. limit plate; 6. rotating column; 7. driven bevel gear; 8. mounting frame; 9. support column; 10. limit ball; 11. mounting block; 12. pump housing; 13. filter; 14. gear box; 15. rotating shaft 1; 16. screw rod; 17. active gear; 18. rotating shaft 2; 19. driven gear; 20. protective cover; 21. muffler. DETAILED DESCRIPTION

[0021] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0022] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0023] In order to quickly complete the connection between the mounting frame 8 and the pump housing 12 according to the processing requirements, improve the production efficiency of propylene carbonate, and at the same time perform vacuum treatment on propylene carbonate, such as Figures 1 to 4As shown, a stepper motor 2 is installed on the outer wall of one side of the support seat 1 by bolts. The external stepper motor 2 is convenient for heat dissipation and maintenance. A driving shaft 3 is fixed to the output end of the stepper motor 2 through a coupling, and an active bevel gear 4 is welded to the end face of the driving shaft 3. A limit plate 5 for supporting the driving shaft 3 is fixed in the support seat 1 by bolts. The driving shaft 3 is rotatably connected to the limit plate 5 through a bearing, thereby ensuring the stability of the driving shaft 3 when rotating.

[0024] A rotating column 6 is rotatably connected to the support seat 1 through a welded bearing, and the rotating column 6 extends to the top of the support seat 1. A driven bevel gear 7 meshing with the active bevel gear 4 is welded to the outer wall of the rotating column 6, and a mounting frame 8 is welded to the surface of the rotating column 6. A plurality of support columns 9 are welded to the bottom of the mounting frame 8. The support columns 9 are distributed in a ring array at the bottom of the mounting frame 8. A rotating groove is provided at the bottom of the support column 9, and a limited ball 10 is rotatably connected in the rotating groove at the bottom of the support column 9. A limiting slide groove for the limited ball 10 to rotate is provided on the surface of the support seat 1. The support column 9 cooperates with the limited ball 10 to make the mounting frame 8 rotate more stably above the support seat 1, and two mounting blocks 11 are welded to the outer walls on both sides of the support seat 1. The mounting blocks 11 are provided with threaded holes, which cooperate with bolts to facilitate the installation of the support seat 1.

[0025] A pump casing 12 for propylene carbonate processing is fixed in the mounting frame 8 by bolts, a gear box 14 is fixed to the outer wall of one side of the pump casing 12, a rotating shaft 15 and a rotating shaft 2 18 are rotatably connected in the gear box 14, the outer walls of the rotating shaft 15 and the rotating shaft 2 18 are fixed with a screw rod 16, a driving gear 17 is fixed to the outer wall of the rotating shaft 15, and a driven gear 19 meshing with the driving gear 17 is fixed to the outer wall of the rotating shaft 2 18, a protective cover 20 is fixed to the outer wall of the pump casing 12 away from the gear box 14, the end faces of the rotating shaft 15 and the rotating shaft 2 18 are rotatably connected to the protective cover 20 through welded bearings, a filter 13 is arranged on the upper side of the gear box 14, and a muffler 21 is arranged on the lower side of the gear box 14. The filter 13 The stepper motor 2 can drive the active bevel gear 4 to rotate, and cooperate with the driven bevel gear 7 to drive the mounting frame 8 to rotate, so that the mounting frame 8 can be quickly rotated to a position matching the pump casing 12, thereby quickly completing the connection between the mounting frame 8 and the pump casing 12. At the same time, in the subsequent processing, the angle of the pump casing 12 can be quickly adjusted according to actual processing requirements to meet different processing requirements. The external equipment drives the rotating shaft 15 and the active gear 17 to rotate, and the active gear 17 drives the rotating shaft 2 18 to rotate through the driven gear 19. The rotating shaft 15 and the rotating shaft 152 drive the spiral rod 16 inside the pump casing 12 to rotate, thereby achieving the suction and exhaust function.

[0026] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The control method of the utility model is controlled by a controller, and the control circuit of the controller can be realized by simple programming by technicians in this field. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0027] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Working principle:

[0029] When the vacuum optimization device for propylene carbonate production is used, the mounting seat is fixed at a suitable position by bolts and mounting blocks 11, the stepping motor 2 is started, the driving shaft 3 and the active bevel gear 4 are driven to rotate, the active bevel gear 4 drives the rotating column 6 and the mounting frame 8 to rotate through the driven bevel gear 7, the mounting frame 8 is rotated to a suitable angle according to the position of the pump housing 12, and then the mounting frame 8 is installed in the mounting frame 8, and in the subsequent processing process, the pump housing 12 can also be driven to rotate and the pump housing 12 can be adjusted to a suitable angle, thereby meeting different processing requirements;

[0030] After the pump casing 12 is installed, it is connected to the rotating shaft 15 through an external driving device. The external driving device drives the rotating shaft 15 and the driving gear 17 to rotate. The driving gear 17 drives the rotating shaft 2 18 to rotate through the driven gear 19. The rotating shaft 15 and the rotating shaft 152 drive the spiral rod 16 inside the pump casing 12 to rotate, thereby achieving the suction and exhaust function. The filter 13 is used for filtering to prevent impurities from entering the interior of the pump casing 12, thereby improving safety. At the same time, a muffler is set at the outlet to reduce the noise generated by the equipment during operation, thereby preventing the workers from being affected by excessive noise.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum optimization device for propylene carbonate production, comprising a support base (1) and a pump housing (12) for propylene carbonate production arranged above the support base (1), characterized in that: A stepper motor (2) is mounted on an outer wall of one side of the support seat (1); a driving shaft (3) is fixed to the output end of the stepper motor (2); and a driving bevel gear (4) is fixed to the end surface of the driving shaft (3); a rotating column (6) is rotatably connected inside the support seat (1); a driven bevel gear (7) meshing with the driving bevel gear (4) is fixed to the outer wall of the rotating column (6); and a mounting frame (8) is fixed to the surface of the rotating column (6); the pump housing (12) is fixed inside the mounting frame (8); a gear box (14) is fixed to an outer wall of one side of the pump housing (12); and a rotating shaft 1 (15) and a rotating shaft 2 (18) are rotatably connected inside the gear box (14), respectively.

2. A vacuum optimization device for propylene carbonate production according to claim 1, characterized in that: A driving gear (17) is fixed on the outer wall of the first rotating shaft (15), and a driven gear (19) meshing with the driving gear (17) is fixed on the outer wall of the second rotating shaft (18).

3. A vacuum optimization device for propylene carbonate production according to claim 2, characterized in that: A protective cover (20) is fixed to the outer wall of the pump housing (12) at a side away from the gear box (14), and a screw rod (16) is fixed to the outer walls of the rotating shaft 1 (15) and the rotating shaft 2 (18).

4. A vacuum optimization device for propylene carbonate production according to claim 3, characterized in that: A filter (13) is provided on the upper side of the gear box (14), and a muffler (21) is provided on the lower side of the gear box (14).

5. The vacuum optimization device for propylene carbonate production according to claim 1, characterized in that: A plurality of support columns (9) are fixed to the bottom of the mounting frame (8), a rotation groove is provided at the bottom of the support column (9), and a limit ball (10) is rotatably connected in the rotation groove at the bottom of the support column (9).

6. A vacuum optimization device for propylene carbonate production according to claim 1, characterized in that: A limiting plate (5) for supporting the drive shaft (3) is fixed inside the support seat (1), and two mounting blocks (11) are fixed to the outer walls on both sides of the support seat (1).

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