A vacuum degassing device for polyacrylamide production

Abstract

This utility model relates to the technical field of degassing equipment and discloses a vacuum degassing device for polyacrylamide production. It includes a base frame and a degassing tank. A main control box and a vertical frame are fixedly connected to the base frame. A first lifting mechanism is movably connected to the vertical frame. A tank cover is fixedly connected to the lower end of the first lifting mechanism on the side away from the vertical frame. A second lifting mechanism is fixedly connected to the base frame at the front of the vertical frame, and an organic platform is fixedly connected to the front of the second lifting mechanism. By directly assembling the stirring shaft and degassing blades inside the degassing tank, and using a keyway-type rapid transmission structure for the drive shaft and transmission shaft, an integrated design of the stirring and degassing components and the tank body is achieved. This allows the degassing tank to be directly transferred via casters after the degassing operation is completed, enabling rapid material transfer without waiting. It also avoids the on-site pollution problem caused by residual material dripping from components after the stirring mechanism and the tank body are separated in traditional equipment.

Description

Technical Field

[0001] This utility model relates to the field of degassing equipment technology, and in particular to a vacuum degassing device for polyacrylamide production. Background Technology

[0002] Polyacrylamide is a water-soluble polymer widely used in wastewater treatment, oil extraction, papermaking and textiles. During the production of polyacrylamide, a large amount of foam is easily generated in the material due to the polymerization reaction, stirring and mixing processes. If the foam cannot be removed in time, it will cause the material volume to expand, the effective volume of the reaction vessel to decrease, and even affect the normal operation of subsequent processes.

[0003] During degassing operations, a Chinese utility model patent with publication number CN223263464U, entitled "A Vacuum Defoaming and Mixing Equipment for the Production of a Novel In-slurry Sizing Agent," is used. This equipment includes a base plate with a placement base connected to the middle of its upper end. A mixing drum is connected to the upper end of the placement base. Hydraulic cylinders are evenly connected to both sides of the upper end of the base plate, and a frame is connected to the upper end of each hydraulic cylinder. This utility model extracts gas from inside the mixing drum during the mixing process. Multiple fixed pipes allow for multi-directional vacuum operation inside the mixing drum, resulting in high vacuum efficiency. This application also incorporates a motor to drive the vacuum defoaming process of the material. The rotation of the first rotating rod, the first stirring rod, and the housing can drive the two second rotating rods and the second stirring rods to move inside the mixing drum, which can uniformly stir the raw materials inside the mixing drum. Therefore, although this application can separate the stirring mechanism from the mixing drum, after degassing, the frame and stirring mechanism must first be lifted by the hydraulic cylinder, and then the screw must be loosened to detach the stabilizing plate from the mixing drum before the mixing drum can be removed from the placement base for transfer. The steps are cumbersome. In addition, material will still remain on the surface of the first and second stirring rods, the housing, and the scraper. After the mixing drum is transferred, the material on its stirring mechanism will drip down, causing pollution to the on-site environment. Therefore, it is also impossible to quickly degas the material. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum degassing device for polyacrylamide production, which integrates the stirring shaft and degassing blades into the degassing tank and is equipped with a quick-release transmission structure. After degassing, the tank can be directly transferred without disassembling the stirring components, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A vacuum degassing device for polyacrylamide production includes a base frame and a degassing tank. A main control box and a vertical frame are fixedly connected to the base frame. A first lifting mechanism is movably connected to the vertical frame. A tank cover is fixedly connected to the lower end of the first lifting mechanism on the side away from the vertical frame. A second lifting mechanism is fixedly connected to the base frame at the front of the vertical frame. A machine platform is fixedly connected to the front of the second lifting mechanism. A geared motor is fixedly connected to the lower end of the machine platform. The first lifting mechanism, the second lifting mechanism, and the geared motor are electrically connected to the main control module in the main control box via wires. A drive shaft is fixedly connected to the output end of the geared motor. Multiple support legs are fixedly connected to the outside of the degassing tank. A fixing ring is fixedly connected to the bottom of the degassing tank. A mechanical seal is fixedly connected to the fixing ring. A transmission shaft is rotatably connected inside the mechanical seal. A stirring shaft is fixedly connected to the transmission shaft. Multiple degassing blades are symmetrically fixedly connected to the outside of the stirring shaft.

[0007] As a further preferred embodiment of this utility model, a keyway is provided in the drive shaft, and the drive shaft can be quickly connected to the transmission shaft in conjunction with the reduction motor and the second lifting mechanism, thereby driving the stirring shaft in the degassing tank to rotate.

[0008] As a further preferred embodiment of this utility model, the can lid is connected to an external vacuum pump via an air pipe. The first lifting mechanism can drive the can lid to rise and fall, so that the can lid seals and closes to the mouth of the degassing tank. By evacuating air through the external vacuum pump, a vacuum environment is constructed inside the degassing tank.

[0009] As a further preferred embodiment of this utility model, the lower end of the support leg is fixedly connected with a caster wheel, which is used for the transfer and movement of the degassing tank.

[0010] As a further preferred embodiment of this utility model, a key shaft matching the keyway is fixedly connected to the lower end of the transmission shaft to provide a transmission foundation for the transmission shaft and the drive shaft. An annular connecting groove is provided at the upper end of the transmission shaft, and a sealing groove is provided on the inner side of the connecting groove to provide an installation foundation for the stirring shaft.

[0011] As a further preferred embodiment of this utility model, a countersunk hole is provided in the middle of the drive shaft, and a bolt is threaded through the countersunk hole and connected to the connecting block to achieve a fixed connection between the drive shaft and the stirring shaft.

[0012] As a further preferred embodiment of this utility model, a sealing ring matching the connecting groove is fixedly connected to the lower end of the stirring shaft, and a connecting block matching the sealing groove is fixedly connected to the stirring shaft located inside the sealing ring. The sealing ring is inserted into the connecting groove, and the connecting block is inserted into the sealing groove, thereby realizing that the degassing tank has its own stirring shaft and degassing blades. After degassing, the material can be directly transferred without waiting time.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this invention, by directly assembling the stirring shaft and degassing blades inside the degassing tank, and combining them with the keyway-type rapid transmission structure of the drive shaft and transmission shaft, an integrated design of the stirring and degassing components and the tank body is achieved. This allows the degassing tank to be directly transferred via casters after the degassing operation is completed, enabling rapid material transfer without waiting. At the same time, it avoids the on-site pollution problem caused by residual material dripping from the components after the stirring mechanism and the tank body are separated in traditional equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the drive shaft structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the degassing tank of this utility model;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 This is a schematic diagram of the transmission shaft structure of this utility model.

[0020] In the diagram: 1. Base frame; 2. Main control box; 3. Vertical frame; 4. First lifting mechanism; 5. Tank lid; 6. Second lifting mechanism; 7. Machine base; 8. Gear motor; 9. Drive shaft; 10. Degassing tank; 11. Support leg; 12. Fixing ring; 13. Mechanical seal; 14. Transmission shaft; 15. Stirring shaft; 16. Degassing impeller; 17. Keyway; 18. Key shaft; 19. Connecting groove; 20. Sealing groove; 21. Countersunk hole; 22. Sealing ring; 23. Connecting block. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-5As shown, the present invention provides a vacuum degassing device for polyacrylamide production, comprising a base frame 1 and a degassing tank 10. A main control box 2 and a vertical frame 3 are fixedly connected to the base frame 1. A first lifting mechanism 4 is movably connected to the vertical frame 3. A tank cover 5 is fixedly connected to the lower end of the first lifting mechanism 4 away from the vertical frame 3. A second lifting mechanism 6 is fixedly connected to the base frame 1 at the front of the vertical frame 3. A machine platform 7 is fixedly connected to the front of the second lifting mechanism 6. A reduction motor 8 is fixedly connected to the lower end of the machine platform 7. 4 and the second lifting mechanism 6 and the reduction motor 8 are electrically connected to the main control module in the main control box 2 through wires. The output end of the reduction motor 8 is fixedly connected to the drive shaft 9. Multiple support legs 11 are fixedly connected to the outside of the degassing tank 10. A fixing ring 12 is fixedly connected to the bottom inside the degassing tank 10. A mechanical seal 13 is fixedly connected to the fixing ring 12. A transmission shaft 14 is rotatably connected inside the mechanical seal 13. A stirring shaft 15 is fixedly connected to the transmission shaft 14. Multiple degassing blades 16 are symmetrically fixedly connected to the outside of the stirring shaft 15.

[0023] like Figure 2 As shown, a keyway 17 is provided in the drive shaft 9. The drive shaft 9 can be quickly connected to the transmission shaft 14 with the geared motor 8 and the second lifting mechanism 6, thereby driving the stirring shaft 15 in the degassing tank 10 to rotate.

[0024] like Figure 1 As shown, the can lid 5 is connected to an external vacuum pump via an air pipe. The first lifting mechanism 4 can drive the can lid 5 to rise and fall, so that the can lid 5 seals and closes to the mouth of the degassing tank 10. By evacuating air through the external vacuum pump, a vacuum environment is constructed inside the degassing tank 10.

[0025] like Figures 3-5 As shown, a caster wheel is fixedly connected to the lower end of the support leg 11. The caster wheel is used for the transfer and movement of the degassing tank 10. A key shaft 18 matching the keyway 17 is fixedly connected to the lower end of the drive shaft 14, which provides a transmission base for the drive shaft 14 and the drive shaft 9. An annular connecting groove 19 is opened at the upper end of the drive shaft 14. A sealing groove 20 is opened on the drive shaft 14 located inside the connecting groove 19, which provides an installation base for the stirring shaft 15. A countersunk hole 21 is opened in the middle of the drive shaft 14. After the bolt passes through the countersunk hole 21, it is connected to the drive shaft 9. The connecting block 23 is threaded to achieve a fixed connection between the drive shaft 14 and the stirring shaft 15. The lower end of the stirring shaft 15 is fixedly connected to a sealing ring 22 that matches the connecting groove 19. The stirring shaft 15 located inside the sealing ring 22 is fixedly connected to a connecting block 23 that matches the sealing groove 20. The sealing ring 22 is inserted into the connecting groove 19, and the connecting block 23 is inserted into the sealing groove 20. This allows the degassing tank 10 to have its own stirring shaft 15 and degassing blades 16. After degassing, the material can be directly transferred without waiting time.

[0026] It should be noted that this utility model is a vacuum degassing device for polyacrylamide production. Before degassing, the polyacrylamide material to be processed is first put into the degassing tank 10. Then, the main control box 2 issues a command to control the first lifting mechanism 4 to move downward, driving the tank cover 5 to close at the opening of the degassing tank 10. The tank cover 5 is connected to an external vacuum pump in advance through an air pipe. After the vacuum pump is started, it continuously pumps air into the sealed degassing tank 10, gradually building the vacuum environment required for degassing inside the tank. With the help of the vacuum negative pressure, the foam contained in the material is eliminated. At the same time, the main control box 2 synchronously controls the second lifting mechanism 6 to move downward, driving the machine base 7, the reduction motor 8 and the drive shaft 9 to move upward synchronously, so that the drive shaft 9 and the transmission shaft 14 are connected. The keyway in the drive shaft 9 Insert 17 into the key shaft 18 at the lower end of the drive shaft 14. Then, the main control box 2 controls the geared motor 8 to start. The power output of the motor is transmitted to the drive shaft 14 through the drive shaft 9, causing the drive shaft 14 to rotate smoothly inside the mechanical seal 13. While the drive shaft 14 rotates, it simultaneously drives the stirring shaft 15 and the degassing blades 16 on the outside of the stirring shaft 15 to rotate inside the degassing tank 10. The rotating degassing blades 16 will form a full and uniform stirring effect on the polyacrylamide material in the degassing tank 10, further mechanically cutting and breaking the foam in the material that has not been eliminated by the vacuum negative pressure, allowing the gas inside the foam to be released quickly. The released gas will be extracted from the outside of the degassing tank 10 by the continuously working vacuum pump in time, thereby achieving the degassing effect of the dual action of vacuum negative pressure and mechanical stirring.

[0027] After the degassing operation is completed, the main control box 2 first controls the reduction motor 8 to stop running, and then controls the second lifting mechanism 6 to move upward, driving the drive shaft 9 to move downward and disengage from the transmission shaft 14. At the same time, it controls the first lifting mechanism 4 to drive the tank cover 5 to rise, and then opens the tank opening of the degassing tank 10.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vacuum degassing device for polyacrylamide production, characterized in that: The system includes a base frame (1) and a degassing tank (10). A main control box (2) and a vertical frame (3) are fixedly connected to the base frame (1). A first lifting mechanism (4) is movably connected to the vertical frame (3). A tank cover (5) is fixedly connected to the lower end of the first lifting mechanism (4) away from the vertical frame (3). A second lifting mechanism (6) is fixedly connected to the base frame (1) located in front of the vertical frame (3). A machine platform (7) is fixedly connected to the front of the second lifting mechanism (6). A reduction motor (8) is fixedly connected to the lower end of the machine platform (7). The first lifting mechanism (4) and the second lifting mechanism (6), and the reduction motor (8) are connected to each other. The speed motor (8) is electrically connected to the main control module in the main control box (2) through wires. The output end of the speed motor (8) is fixedly connected to the drive shaft (9). Multiple support legs (11) are fixedly connected to the outside of the degassing tank (10). A fixing ring (12) is fixedly connected to the bottom of the degassing tank (10). A mechanical seal (13) is fixedly connected to the fixing ring (12). A transmission shaft (14) is rotatably connected inside the mechanical seal (13). A stirring shaft (15) is fixedly connected to the transmission shaft (14). Multiple degassing blades (16) are symmetrically fixedly connected to the outside of the stirring shaft (15).

2. The vacuum degassing device for polyacrylamide production according to claim 1, characterized in that: The drive shaft (9) has a keyway (17).

3. The vacuum degassing device for polyacrylamide production according to claim 1, characterized in that: The can lid (5) is connected to an external vacuum pump via an air pipe.

4. The vacuum degassing device for polyacrylamide production according to claim 1, characterized in that: The lower end of the support leg (11) is fixedly connected to a caster wheel.

5. The vacuum degassing device for polyacrylamide production according to claim 2, characterized in that: The lower end of the drive shaft (14) is fixedly connected to a key shaft (18) that matches the keyway (17). The upper end of the drive shaft (14) is provided with an annular connecting groove (19). The drive shaft (14) located inside the connecting groove (19) is provided with a sealing groove (20).

6. The vacuum degassing device for polyacrylamide production according to claim 5, characterized in that: A countersunk hole (21) is provided in the middle of the drive shaft (14).

7. The vacuum degassing device for polyacrylamide production according to claim 6, characterized in that: The lower end of the stirring shaft (15) is fixedly connected to a sealing ring (22) that matches the connecting groove (19). The stirring shaft (15) located inside the sealing ring (22) is fixedly connected to a connecting block (23) that matches the sealing groove (20). The sealing ring (22) is inserted into the connecting groove (19), and the connecting block (23) is inserted into the sealing groove (20).

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