Efficient defoaming kettle for preparing chitosan fibers

Abstract

The utility model discloses an efficient defoaming kettle for chitosan fiber preparation, which comprises a kettle body and a kettle cover capable of sealing the kettle body, the kettle cover is connected with a vacuumizing pipe, the vacuumizing pipe is connected with a vacuum pump, the vacuumizing pipe is provided with a barometer, the kettle cover is provided with an air pressure regulating valve, and the kettle cover is provided with a stirring motor. The stirring motor drives a stirring shaft extending into the kettle body, a first stirring unit, a plurality of second stirring units and two third stirring units are mounted at the stirring shaft, and a frame part is further mounted at the stirring shaft. According to the defoaming kettle, efficient defoaming of a chitosan solution is realized in a mode of stirring and vacuumizing at the same time. The frame part is connected with the stirring shaft through the upper bearing and the lower bearing, so that the contact opportunities of the materials with the first cutting blade and the second cutting blade are increased, and the bubble breaking efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of degassing kettles, and more specifically, to a high-efficiency degassing kettle for preparing chitosan fibers. Background Technique

[0002] During the preparation of chitosan spinning dope, air bubbles may be mixed in. The presence of air bubbles will increase the resistance during the spinning process, resulting in wire breakage, affecting the stability of the spinning process and the quality of the fibers. After using a degassing kettle to remove air bubbles, the wire breakage rate can be significantly reduced, and thus the prepared chitosan fibers have higher quality and better physical and chemical stability.

[0003] In the existing degassing kettles, due to the high viscosity of the solution, it is difficult for air bubbles to disperse and escape, resulting in low degassing efficiency. Often, the air bubbles in the chitosan solution cannot be completely removed, and the residual air bubbles will affect the stability of the subsequent process and the final quality of the product. Moreover, the stirring device of the traditional degassing kettle may have the problem of uneven stirring, resulting in uneven distribution of air bubbles in the material. The air bubble content is high in some areas and low in some areas, and uneven stirring will affect the degassing effect. Content of the Utility Model

[0004] The utility model aims to overcome the defects of the prior art and provide a high-efficiency degassing kettle for preparing chitosan fibers.

[0005] To achieve the above object, the utility model provides the following technical solution: A degassing kettle for preparing chitosan fibers, including a kettle body and a kettle lid capable of closing the kettle body. A vacuum pumping pipe is connected to the kettle lid, the vacuum pumping pipe is connected to a vacuum pump, a pressure gauge is provided at the vacuum pumping pipe, a pressure regulating valve is installed at the kettle lid, a stirring motor is installed at the kettle lid, the stirring motor drives a stirring shaft extending into the kettle body, a first stirring unit, a plurality of second stirring units and two third stirring units are installed at the stirring shaft, a frame part is further installed at the stirring shaft, the frame part includes an upper ring part, a lower ring part, two U-shaped connecting rods connecting the upper ring part and the lower ring part, a plurality of cross bars are connected to the U-shaped connecting rods, the cross bars have first cutting edges, the U-shaped connecting rods have vertical vertical rods, the vertical rods have second cutting edges, and the upper ring part is connected to the stirring shaft through an upper bearing, and the lower ring part is connected to the stirring shaft through a lower bearing.

[0006] Further, the first stirring unit includes a first ring part and a plurality of stirring blades fixed to the first ring part.

[0007] Thereby, the material rises, and when it rises to a certain extent, it falls under the action of gravity, so that the material rotates while rising and then falls to achieve circulation.

[0008] Furthermore, the multiple stirring blades at the first stirring unit are distributed at equal intervals in a circular shape.

[0009] Furthermore, the second stirring unit includes a second circular ring portion and multiple stirring rods fixed to the second circular ring portion.

[0010] Thereby, the stirring effect is achieved, and the separation of bubbles from the solution is promoted.

[0011] Furthermore, the multiple stirring rods at the second stirring unit are distributed at equal intervals in a circular shape.

[0012] Furthermore, the third stirring unit includes a third circular ring portion and multiple rotating rods fixed to the third circular ring portion. Both sides of each rotating rod are provided with multiple spike portions. The first circular ring portion, the second circular ring portion, and the third circular ring portion are all fixedly connected to the stirring shaft.

[0013] Thereby, the spike portions can pierce the bubbles.

[0014] Furthermore, the multiple rotating rods at the third stirring unit are distributed at equal intervals in a circular shape.

[0015] Furthermore, a feed pipe is provided at the kettle cover, and a feed pipe cover is provided at the feed pipe. A discharge pipe is provided at the bottom of the kettle body, and a discharge pipe valve is provided at the discharge pipe.

[0016] Thereby, the feed pipe is used to add raw materials into the kettle body, and the discharge pipe is used to discharge the treated chitosan solution.

[0017] Furthermore, an observation window is provided at the kettle cover.

[0018] Thereby, it is convenient to observe the stirring and defoaming conditions inside the kettle body during the operation process.

[0019] Furthermore, multiple support legs are provided at the bottom of the kettle body.

[0020] Thereby, the kettle body is ensured to be placed stably.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] 1. For the defoaming kettle of the present application, through the method of stirring while evacuating, the efficient defoaming of the chitosan solution is realized.

[0023] 2. For the defoaming kettle of the present application, the first stirring unit realizes the up - and - down circulation of the material, the second stirring unit realizes the efficient stirring of the material, and the spike portions, the first cutting edge, and the second cutting edge pierce the bubbles, thereby improving the removal efficiency of the bubbles.

[0024] 3. In the defoaming kettle of the present application, the frame part is connected to the stirring shaft through the upper bearing and the lower bearing, increasing the contact opportunity between the material and the first cutting edge and the second cutting edge, thereby improving the efficiency of bubble rupture. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the defoaming kettle;

[0026] Figure 2 It is an enlarged view of area A;

[0027] Figure 3 It is a schematic diagram of a partial structure of the defoaming kettle;

[0028] Figure 4 It is an enlarged view of area B;

[0029] Figure 5 It is an enlarged view of area C;

[0030] Figure 6 It is an enlarged view of area D.

[0031] Description of the reference numerals in the drawings: Kettle body 1; Feed pipe 1.1; Feed pipe valve 1.2; Support leg 1.3; Kettle cover 2; Feed pipe 2.1; Feed pipe cover 2.2; Observation window 2.3; Vacuum extraction pipe 3; Pressure gauge 3.1; Pressure regulating valve 4; Stirring motor 5; Stirring shaft 5.1; Frame part 6; Upper ring part 6.1; Lower ring part 6.2; U-shaped connecting rod 6.3; Cross bar 6.4; Vertical bar 6.5; Upper bearing 6.6; Lower bearing 6.7; First ring part 7.1; Stirring blade 7.2; Second ring part 8.1; Stirring rod 8.2; Third ring part 9.1; Rotating rod 9.2; Spiked part 9.3. Detailed Embodiment

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] The present utility model provides as Figure 1-6An efficient defoaming kettle for preparing chitosan fibers as shown includes a kettle body 1 and a kettle lid 2 capable of closing the kettle body 1. A vacuum extraction pipe 3 is connected to the kettle lid 2. The vacuum extraction pipe 3 is connected to a vacuum pump (the vacuum pump is not shown in the figure). A pressure gauge 3.1 is provided on the vacuum extraction pipe 3. A pressure regulating valve 4 is installed on the kettle lid 2. A stirring motor 5 is installed on the kettle lid 2. The stirring motor 5 drives a stirring shaft 5.1 extending into the kettle body 1. A first stirring unit, a plurality of second stirring units, and two third stirring units are installed on the stirring shaft 5.1. A frame part 6 is also installed on the stirring shaft 5.1. The frame part 6 includes an upper ring part 6.1, a lower ring part 6.2, and two U-shaped connecting rods 6.3 connecting the upper ring part 6.1 and the lower ring part 6.2. A plurality of cross bars 6.4 are connected to the U-shaped connecting rods 6.3. The cross bars 6.4 have first cutting edges. The U-shaped connecting rods 6.3 have vertical vertical rods 6.5. The vertical rods 6.5 have second cutting edges. The upper ring part 6.1 and the stirring shaft 5.1 are connected by an upper bearing 6.6. The lower ring part 6.2 and the stirring shaft 5.1 are connected by a lower bearing 6.7.

[0034] The first stirring unit includes a first ring part 7.1 and a plurality of stirring blades 7.2 fixed to the first ring part 7.1. The second stirring unit includes a second ring part 8.1 and a plurality of stirring rods 8.2 fixed to the second ring part 8.1. The third stirring unit includes a third ring part 9.1 and a plurality of rotating rods 9.2 fixed to the third ring part 9.1. A plurality of spike parts 9.3 are provided on both sides of the rotating rod 9.2. The first ring part 7.1, the second ring part 8.1, and the third ring part 9.1 are all fixedly connected to the stirring shaft 5.1. A feed pipe 2.1 is provided on the kettle lid 2. A feed pipe cover 2.2 is provided on the feed pipe 2.1. A discharge pipe 1.1 is provided at the bottom of the kettle body 1. A discharge pipe valve 1.2 is provided on the discharge pipe 1.1. An observation window 2.3 is provided on the kettle lid 2. A plurality of support legs 1.3 are provided at the bottom of the kettle body 1.

[0035] Working principle: For the defoaming kettle of this application, defoaming is achieved while stirring and extracting vacuum. During stirring, the first stirring unit can make the material rise, and when it rises to a certain extent, it falls under the action of gravity, so as to realize the rotation of the material while rising and then falling to achieve circulation. The stirring rods of the second stirring unit achieve a stirring effect on the material. The spike parts, the first cutting edges, and the second cutting edges achieve piercing of the bubbles. The gas is pumped away by the vacuum pump, thus ensuring the effective removal of the bubbles. After defoaming, when discharging or opening the kettle lid, the valve needs to be opened to make the internal and external pressures the same.

[0036] For the defoaming kettle of the present application, during stirring, the frame part does not rotate synchronously with the stirring shaft (the two are connected by an upper bearing and a lower bearing). The frame part will also rotate to a certain extent under the action of the rotating material, but it does not rotate synchronously with the stirring shaft, so that the rotating material can better contact the first cutting edge and the second cutting edge, realizing the rupture of bubbles.

[0037] Although the present utility model has been illustrated and described with respect to the preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present utility model as long as they do not exceed the scope defined by the claims of the present utility model.

Claims

1. An efficient defoaming kettle for preparing chitosan fibers, characterized in that, It includes a kettle body and a kettle lid capable of closing the kettle body. A vacuum extraction pipe is connected to the kettle lid. The vacuum extraction pipe is connected to a vacuum pump. A pressure gauge is provided at the vacuum extraction pipe. A pressure regulating valve is installed at the kettle lid. A stirring motor is installed at the kettle lid. The stirring motor drives a stirring shaft extending into the kettle body. A first stirring unit, a plurality of second stirring units and two third stirring units are installed at the stirring shaft. A frame part is also installed at the stirring shaft. The frame part includes an upper circular ring part, a lower circular ring part, and two U-shaped connecting rods connecting the upper circular ring part and the lower circular ring part. A plurality of cross bars are connected to the U-shaped connecting rods. The cross bars have first cutting edges. The U-shaped connecting rods have vertical vertical rods. The vertical rods have second cutting edges. The upper circular ring part and the stirring shaft are connected by an upper bearing. The lower circular ring part and the stirring shaft are connected by a lower bearing.

2. The high-efficiency degassing kettle for preparing chitosan fibers according to claim 1, characterized in that, The first stirring unit includes a first circular ring part and a plurality of stirring blades fixed to the first circular ring part.

3. The high-efficiency defoaming kettle for preparing chitosan fibers according to claim 1, wherein, The second stirring unit includes a second circular ring part and a plurality of stirring rods fixed to the second circular ring part.

4. The high-efficiency defoaming kettle for preparing chitosan fibers according to claim 1, wherein, The third stirring unit includes a third circular ring part and a plurality of rotating rods fixed to the third circular ring part. A plurality of spike parts are provided on both sides of the rotating rods. The first circular ring part, the second circular ring part and the third circular ring part are all fixedly connected to the stirring shaft.

5. The high-efficiency defoaming kettle for preparing chitosan fibers according to claim 1, characterized in that, A feed pipe is provided at the kettle lid. A feed pipe cover is provided at the feed pipe. A discharge pipe is provided at the bottom of the kettle body. A discharge pipe valve is provided at the discharge pipe.

6. The high-efficiency defoaming kettle for preparing chitosan fibers according to claim 1, characterized in that, An observation window is provided at the kettle lid.

7. The high-efficiency degassing kettle for preparing chitosan fibers according to claim 1, wherein, A plurality of support legs are provided at the bottom of the kettle body.

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