Defoaming stirring device

Abstract

The utility model relates to a defoaming stirring device and belongs to the technical field of stirring equipment. The defoaming stirring device comprises a guide cylinder, a first rotating shaft, a second rotating shaft, a first stirring paddle, a second stirring paddle and a guide paddle; the guide cylinder is of a hollow structure with two open ends; the first stirring paddle and the second stirring paddle are located in the guide cylinder, the first stirring paddle spirally winds around the periphery of the first rotating shaft and is connected with the first rotating shaft, the second stirring paddle spirally winds around the periphery of the second rotating shaft, one end of the second rotating shaft is provided with a supporting shaft, and the other end of the second rotating shaft is connected with the supporting shaft. One end of the second stirring paddle is connected with the supporting shaft, and a flow guide paddle is arranged on the supporting shaft. According to the utility model, the spiral first stirring paddle and the spiral second stirring paddle are arranged and are matched with the guide cylinder, so that the stirring effect and the defoaming effect on materials are effectively improved, the materials are better mixed and flow in the vertical direction, the mixing effect is good, and the defoaming efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring equipment, in particular to a degassing stirring device. Background Art

[0002] In industrial fields such as electronic devices, medical equipment, and chemical materials, when preparing liquid slurries or liquid materials, it is necessary to fully mix the raw materials and discharge the gases dissolved or present in the liquid before solidifying and forming the product to ensure good product quality and corresponding performance.

[0003] The most commonly used degassing and stirring equipment is the vacuum degassing machine, which mainly uses the negative pressure environment to expand and annihilate the gas. The existing vacuum degassing machine includes a vacuum container and a stirring mechanism. By reducing the pressure of the liquid environment in the container, the gas inside the liquid expands and gradually floats to the upper surface of the liquid to break and disappear. The stirring paddle stirs the mixed materials evenly and keeps the gas state of the upper and lower layers of the liquid consistent, preventing the problem of incomplete degassing caused by the upper liquid being degassed but the gas in the lower liquid being unable to reach the upper layer. The stirring mechanism used in the existing vacuum degassing machine is mostly a frame design structure. This structure is difficult to achieve uniform stirring of the upper and lower layers when stirring slurries with high viscosity, and it is easy to cause a dry film to form on the upper surface, thereby affecting the bubble breaking, and the mixing efficiency of different materials is low; and the use of a rotary structure is based on its consistent upper and lower shapes, and the stirring intensity and degassing rate are also relatively fixed. In actual operation, there are great limitations, and the stirring state of the upper and lower layers cannot be controllably adjusted, and the degassing efficiency is low.

[0004] Therefore, it is very necessary to design a deaeration and mixing device with good deaeration and mixing effects. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art and provide a degassing and stirring device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A defoaming and stirring device comprises a guide tube, a first rotating shaft, a second rotating shaft, a first stirring paddle, a second stirring paddle and a guide paddle; the guide tube is a structure with a hollow interior and openings at both ends; the first stirring paddle and the second stirring paddle are located in the guide tube, the first stirring paddle is spirally rotated around the periphery of the first rotating shaft, the first stirring paddle is connected to the first rotating shaft, the second stirring paddle is spirally rotated around the periphery of the second rotating shaft, the first rotating shaft is located above the second rotating shaft, one end of the first rotating shaft extends out of the guide tube, one end of the second rotating shaft is provided with a support shaft, one end of the second stirring paddle is connected to the support shaft, a guide paddle is provided on the support shaft, and the guide paddle is located below the second stirring paddle.

[0008] As a preferred embodiment of the deaeration and stirring device of the utility model, the deaeration and stirring device also includes a first fixed rod and a second fixed rod, the lower end of the first stirring paddle is connected to one end of the first fixed rod, and the other end of the first fixed rod is connected to the first rotating shaft; the upper end of the second stirring paddle is connected to one end of the second fixed rod, and the other end of the second fixed rod is connected to the second rotating shaft.

[0009] As a preferred embodiment of the degassing stirring device of the utility model, the number of the first stirring paddles is two, and the two first stirring paddles are arranged opposite to each other; the number of the second stirring paddles is two, and the two second stirring paddles are arranged opposite to each other.

[0010] As a preferred embodiment of the deaeration and stirring device of the utility model, the change trend of the circle radius of the first stirring paddle from top to bottom is any one of the following (I) to (II): (I) gradually increasing, (II) gradually decreasing, (III) first increasing and then gradually decreasing; the circle radius of the second stirring paddle gradually increases or gradually decreases from top to bottom.

[0011] As a preferred embodiment of the degassing stirring device of the utility model, the winding radius of the first stirring paddle and the winding radius of the second stirring paddle have the same or different changing trends in the direction from top to bottom.

[0012] As a preferred embodiment of the degassing stirring device of the utility model, when the winding radius of the first stirring paddle and the winding radius of the second stirring paddle gradually increase from top to bottom, the maximum value of the winding radius of the second stirring paddle is not less than the maximum value of the winding radius of the first stirring paddle.

[0013] As a preferred embodiment of the degassing stirring device of the utility model, when the winding radius of the first stirring paddle and the winding radius of the second stirring paddle gradually decrease from top to bottom, the minimum value of the winding radius of the second stirring paddle is not greater than the minimum value of the winding radius of the first stirring paddle.

[0014] As a preferred embodiment of the degassing and stirring device of the utility model, the guide paddle is in an arc-shaped structure, and the inner concave surface of the guide paddle faces the second rotating shaft.

[0015] As a preferred embodiment of the degassing and stirring device of the utility model, the first rotating shaft and the second rotating shaft are spaced apart in the vertical direction; the upper end of the first rotating shaft extends out of the guide tube and is connected to the output end of a driving motor, and the lower end of the second rotating shaft extends out of the guide tube and is connected to the output end of another driving motor.

[0016] As a preferred embodiment of the degassing stirring device of the utility model, the upper end of the first stirring paddle is directly connected to the first rotating shaft; the lower end of the second stirring paddle is connected to one end of the support shaft; the central axis of the first rotating shaft and the central axis of the second rotating shaft are on the same straight line.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model is provided with a spiral first stirring paddle and a second stirring paddle, and a guide tube, which can effectively improve the stirring effect and deaeration effect of the device on the material, so that the material can be better mixed and flowed in the vertical direction, and the stirring intensity and the deaeration rate can be controllably adjusted so that the material can be deaerated evenly in the stirring state, and the mixing effect of different materials is good and the deaeration efficiency is high; the structural design of the utility model is reasonable and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a degassing and stirring device provided in an embodiment;

[0020] Figure 2 A schematic structural diagram of the degassing and stirring device from another angle provided in the embodiment;

[0021] Figure 3 A schematic diagram of the rotation of the first stirring paddle and the second stirring paddle provided in Example 1;

[0022] Figure 4 A schematic diagram of the rotation of the first stirring paddle and the second stirring paddle provided in Example 2;

[0023] Figure 5 A schematic diagram of the rotation of the first stirring paddle and the second stirring paddle provided in Example 3;

[0024] Figure 6 A schematic diagram of the rotation of the first stirring paddle and the second stirring paddle provided in Example 4;

[0025] Figure 7 A schematic diagram of the rotation of the first stirring paddle and the second stirring paddle provided in Example 5;

[0026] Figure 8 Schematic diagram of the rotation of the first stirring paddle and the second stirring paddle provided in Example 6.

[0027] In the figure, 1-guide cylinder, 2-first rotating shaft, 3-second rotating shaft, 4-first stirring paddle, 5-second stirring paddle, 6-first fixing rod, 7-support shaft, 8-guide paddle, 9-second fixing rod. DETAILED DESCRIPTION

[0028] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

[0029] See also Figure 1-8 The utility model provides a degassing and stirring device, including a guide tube 1, a first rotating shaft 2, a second rotating shaft 3, a first stirring paddle 4, a second stirring paddle 5 and a guide paddle 8; the guide tube 1 is a structure with a hollow interior and openings at both ends; the first stirring paddle 4 and the second stirring paddle 5 are located in the guide tube 1, the first stirring paddle 4 is spirally rotated around the periphery of the first rotating shaft 2, the first stirring paddle 4 is connected to the first rotating shaft 2, the second stirring paddle 5 is spirally rotated around the periphery of the second rotating shaft 3, the first rotating shaft 2 is located above the second rotating shaft 3, one end of the first rotating shaft 2 extends out of the guide tube 1, one end of the second rotating shaft 3 is provided with a support shaft 7, one end of the second stirring paddle 5 is connected to the support shaft 7, the support shaft 7 is provided with a guide paddle 8, and the guide paddle 8 is located below the second stirring paddle 5.

[0030] The utility model is provided with a spiral first stirring paddle 4 and a second stirring paddle 5, and a guide tube 1, which can effectively improve the stirring effect and degassing effect of the device on the material, so that the material can be better mixed and flowed in the vertical direction, and the stirring intensity and the degassing rate can be controllably adjusted so that the material can be degassed evenly in the stirring state, and the mixing effect of different materials is good and the degassing efficiency is high; the structural design of the utility model is reasonable and the operation is convenient.

[0031] In one embodiment, the degassing and stirring device also includes a first fixed rod 6 and a second fixed rod 9, the lower end of the first stirring paddle 4 is connected to one end of the first fixed rod 6, and the other end of the first fixed rod 6 is connected to the first rotating shaft 2; the upper end of the second stirring paddle 5 is connected to one end of the second fixed rod 9, and the other end of the second fixed rod 9 is connected to the second rotating shaft 3.

[0032] In one embodiment, the number of revolutions of the first stirring paddle 4 is 1 to 5, and the radius of the first stirring paddle 4 changes from top to bottom in any one of the following (I) to (III): (I) gradually increases, (II) gradually decreases, and (III) first increases and then gradually decreases.

[0033] In one embodiment, there are two first stirring paddles 4, and the two first stirring paddles 4 are arranged opposite to each other. For example, among the two first stirring paddles 4, one first stirring paddle 4 rotates counterclockwise, and the other first stirring paddle 4 rotates clockwise.

[0034] The utility model can make the slurry more evenly mixed and improve the degassing effect by arranging two first stirring paddles 4 opposite to each other.

[0035] In one embodiment, the second stirring paddle 5 rotates 1 to 5 times, and the radius of the second stirring paddle 5 gradually increases or decreases from top to bottom.

[0036] In the present invention, the winding radius of the first stirring paddle 4 refers to the distance between any point of the outermost wall of the convexity of the first stirring paddle 4 and the first rotating shaft 2; the winding radius of the second stirring paddle 5 refers to the distance between any point of the outermost wall of the convexity of the second stirring paddle 5 and the second rotating shaft 3.

[0037] It is understandable that the present invention has no particular restrictions on the specific size of the guide tube 1, the specific size of the first stirring paddle 4 and its winding radius, and the specific size of the second stirring paddle 5 and its winding radius, and those skilled in the art can design them according to actual needs.

[0038] In one embodiment, there are two second stirring paddles 5, and the two second stirring paddles 5 are arranged opposite to each other. For example, among the two second stirring paddles 5, one second stirring paddle 5 rotates counterclockwise, and the other second stirring paddle 5 rotates clockwise.

[0039] The utility model can make the slurry more evenly mixed and improve the degassing effect by arranging two spiral second stirring paddles 5 opposite to each other.

[0040] In one embodiment, when the winding radius of the first stirring paddle 4 and the winding radius of the second stirring paddle 5 gradually increase from top to bottom, the maximum value of the winding radius of the second stirring paddle 5 is not less than the maximum value of the winding radius of the first stirring paddle 4 .

[0041] In some embodiments, when the winding radius of the first stirring paddle 4 and the winding radius of the second stirring paddle 5 gradually decrease from top to bottom, the minimum value of the winding radius of the second stirring paddle 5 is not greater than the minimum value of the winding radius of the first stirring paddle 4 .

[0042] In one embodiment, the guide paddle 8 is in an arc-shaped structure, and the inner concave surface of the guide paddle 8 faces the second rotating shaft 3. The guide paddle 8 in an arc-shaped structure conforms to the shape and structure of the bottom of the container of the existing vacuum deaerator, and can fully mix and deaerate the fluid material at the bottom of the container. It can be understood that the utility model does not have any special restrictions on the size of the guide paddle 8, and those skilled in the art can design the size of the guide paddle 8 according to actual needs.

[0043] In one embodiment, the first rotating shaft 2 and the second rotating shaft 3 are arranged at intervals in the vertical direction, the upper end of the first rotating shaft 2 extends out of the guide tube 1 and is connected to the output end of a driving motor (not shown in the figure), and the lower end of the second rotating shaft 3 extends out of the guide tube 1 and is connected to the output end of another driving motor (not shown in the figure). The first rotating shaft 2 and the first stirring paddle 4 form a stirring structure, and the second rotating shaft 3 and the second stirring paddle 5 form a stirring structure; the first rotating shaft 2 and the second rotating shaft 3 are arranged at intervals, which means that there is a gap between the two in the vertical direction and they are not in contact; the first stirring paddle 4 and the second stirring paddle 5 are also not in contact; the two stirring structures can operate independently; when in use, the upper end of the first rotating shaft 2 is connected to the output end of a driving motor; the lower end of the second rotating shaft 3 is connected to the output end of another driving motor. Under the drive of the two driving motors, the two stirring structures stir the materials at different speeds and different rotation directions, which is conducive to improving the stirring efficiency of the materials, and is conducive to improving the stirring effect and defoaming effect of the materials. It is suitable for materials with different viscosities, different fluidities and different mixing states (such as slurries with stratification or partial sedimentation), and has strong applicability.

[0044] Specifically, the upper end of the first stirring paddle 4 is directly connected to the first rotating shaft 2 ; the lower end of the second stirring paddle 5 is connected to one end of the supporting shaft 7 ; the central axis of the first rotating shaft 2 and the central axis of the second rotating shaft 3 are on the same straight line.

[0045] The present invention provides the following to facilitate understanding of the present invention. The present invention provides these embodiments but is not intended to limit the scope of the claims.

[0046] Example 1

[0047] This embodiment provides a degassing stirring device, the structure of which is shown in FIG. Figure 1-3 , including a guide tube 1, a first rotating shaft 2, a second rotating shaft 3, a first stirring paddle 4, a second stirring paddle 5 and a guide paddle 8; the guide tube 1 is a structure with a hollow interior and openings at both ends; the first stirring paddle 4 and the second stirring paddle 5 are located in the guide tube 1, the first stirring paddle 4 is spirally rotated around the periphery of the first rotating shaft 2, the first stirring paddle 4 is connected to the first rotating shaft 2, the second stirring paddle 5 is spirally rotated around the periphery of the second rotating shaft 3, the first rotating shaft 2 is located above the second rotating shaft 3, one end of the first rotating shaft 2 extends out of the guide tube 1, a support shaft 7 is provided at one end of the second rotating shaft 3, a guide paddle 8 is provided on the support shaft 7, and the guide paddle 8 is located below the second stirring paddle 5.

[0048] The upper end of the first stirring paddle 4 is directly connected to the first rotating shaft 2, the lower end of the first stirring paddle 4 is connected to one end of the first fixed rod 6, and the other end of the first fixed rod 6 is connected to the first rotating shaft 2. There are two first stirring paddles 4, and the two first stirring paddles 4 are arranged opposite to each other. The number of turns of the first stirring paddle 4 is 1 turn, and the radius of the turn of the first stirring paddle 4 gradually increases from top to bottom, specifically, from 0 mm to 260 mm, and then gradually increases to a maximum value of 340 mm.

[0049] The upper end of the second stirring paddle 5 is connected to one end of the second fixed rod 9, and the other end of the second fixed rod 9 is connected to the second rotating shaft 3. There are two second stirring paddles 5, and the two second stirring paddles 5 are arranged opposite to each other. The lower end of one second stirring paddle 5 is connected to one end of the support shaft 7, and the lower end of the other second stirring paddle 5 is connected to the other end of the support shaft 7. The number of turns of the second stirring paddle 5 is 1 turn, and the radius of the turn of the second stirring paddle 5 gradually increases from top to bottom, specifically from 340 mm to 420 mm, and then gradually increases to a maximum value of 500 mm.

[0050] The guide paddle 8 is in an arc-shaped structure, and the inner concave surface of the guide paddle 8 faces the second rotating shaft 3 .

[0051] The first rotating shaft 2 and the second rotating shaft 3 are spaced apart in the vertical direction, and the central axis of the first rotating shaft 2 and the central axis of the second rotating shaft 3 are on the same straight line.

[0052] Example 2

[0053] The difference between this embodiment and embodiment 1 is that in this embodiment, see Figure 4 The radius of the first stirring paddle 4 gradually decreases from top to bottom, specifically from 500 mm to a minimum of 420 mm; the radius of the second stirring paddle 5 gradually decreases from top to bottom, specifically from 420 mm to 340 mm, and then to a minimum of 260 mm.

[0054] Example 3

[0055] The difference between this embodiment and embodiment 1 is that in this embodiment, see Figure 5 The radius of the first stirring paddle 4 increases first and then gradually decreases from top to bottom, specifically, gradually increases from 0 mm to 340 mm, and then gradually decreases to a minimum value of 260 mm; the radius of the second stirring paddle 5 decreases from top to bottom, specifically, gradually decreases from 340 mm to a minimum value of 260 mm.

[0056] Example 4

[0057] The difference between this embodiment and embodiment 1 is that in this embodiment, see Figure 6The radius of the first stirring paddle 4 gradually increases from top to bottom, specifically from 0 mm to 260 mm, and then gradually increases to a maximum value of 340 mm; the radius of the second stirring paddle 5 gradually increases from top to bottom, specifically from 260 mm to a maximum value of 340 mm.

[0058] Example 5

[0059] The difference between this embodiment and embodiment 1 is that in this embodiment, see Figure 7 The radius of the first stirring paddle 4 gradually increases from top to bottom, specifically, from 0 mm to 260 mm, and then gradually increases to 340 mm; the radius of the second stirring paddle 5 gradually decreases from top to bottom, specifically, from 340 mm to 260 mm.

[0060] Example 6

[0061] The difference between this embodiment and embodiment 1 is that in this embodiment, see Figure 8 The radius of the first stirring paddle 4 increases from top to bottom first and then gradually decreases, specifically from 0 mm to 340 mm, and then gradually decreases to 260 mm; the radius of the second stirring paddle 5 increases from top to bottom, specifically from 260 mm to 340 mm.

[0062] Comparative Example 1

[0063] The difference between this comparative example and Example 1 is that no guide tube is provided in this comparative example.

[0064] Comparative Example 2

[0065] The difference between this comparative example and Example 1 is that, in this comparative example, the lower end of the first stirring paddle and the upper end of the second stirring paddle are integrally connected, the first rotating shaft and the second rotating shaft are integrally connected, there is no change in the winding radius of the first stirring paddle and the second stirring paddle, and the winding radius of the first stirring paddle and the winding radius of the second stirring paddle are both 500 mm; no guide tube is set in this comparative example.

[0066] In order to further verify the degassing effect and mixing effect of the devices provided in the above embodiments and comparative examples, the utility model uses the devices provided in the embodiments and comparative examples as the devices to be tested to test the degassing effect and mixing effect. Before the test, the driving motor, the measuring cylinder and the device to be tested are assembled. After assembly, the guide cylinder is fixed in the measuring cylinder, the first stirring paddle, the second stirring paddle and the guide paddle are located in the measuring cylinder, the guide cylinder and the guide paddle are at a certain distance from the bottom plate of the measuring cylinder, the upper end of the first rotating shaft is connected to the output end of a driving motor, the lower end of the second rotating shaft passes through the bottom plate of the measuring cylinder and rotates and seals with the bottom plate of the measuring cylinder, and the second rotating shaft is connected to the output end of another driving motor; the guide cylinder does not need to be fixed in the devices of comparative examples 1 to 2, and the second rotating shaft in the device of comparative example 2 is not connected to the driving motor; the testing method is as follows:

[0067] (1) Pour a slurry with a solid content of 70wt% and a slurry with a solid content of 80wt% into a measuring cylinder at a volume ratio of 1:1. The slurry in the cylinder submerges the guide tube and the first stirring paddle. The slurry is stirred using the device to be tested (the stirring speed of each device to be tested is the same) for 10 hours. Then, a slurry solid content tester is used to measure the solid content of the upper slurry in the cylinder (within 100mm from the upper surface of the slurry) and the solid content of the lower slurry (within 100mm from the bottom of the measuring cylinder) at 25°C and 1.01MPa, and the solid content difference is calculated according to the following formula: Solid content difference = solid content of the upper slurry - solid content of the lower slurry. Solid content is the ratio of the mass of solid matter in the slurry to the total mass of the slurry.

[0068] (2) Pour a slurry with a solid content of 70 wt% and a slurry with a solid content of 80 wt% into a measuring cylinder at a volume ratio of 1:1. The slurry in the cylinder submerges the guide tube. At 25°C and 1.01 MPa, the slurry is stirred using a device to be tested (the stirring speed of each device to be tested is the same). During the stirring process, the viscosity of the slurry is measured using a viscosity tester, and the stirring time required for complete degassing of the slurry (i.e., the viscosity is 10-20 Pa〃s) is recorded.

[0069] The test results are shown in Table 1.

[0070] Table 1

[0071]

[0072]

[0073] As can be seen from Table 1, the device provided by the utility model is provided with a spiral first stirring paddle and a second stirring paddle, and a guide tube. The difference in solid content between the upper and lower layers of the slurry obtained by testing is small and the deaeration time is short. The device can effectively improve the stirring effect and deaeration effect of the material, so that the material can be better mixed and flowed in the vertical direction. The stirring intensity and deaeration rate can be controllably adjusted so that the material can be evenly deaerated under stirring, and the mixing effect of different materials is good and the deaeration efficiency is high.

[0074] The terms "first" and "second" in the present invention are only used for descriptive purposes and cannot be understood as indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. All directional indicators (such as up and down) in the present invention are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A degassing stirring device, characterized in that: It includes a guide tube, a first rotating shaft, a second rotating shaft, a first stirring paddle, a second stirring paddle and a guide paddle; the guide tube is a structure with a hollow interior and openings at both ends; the first stirring paddle and the second stirring paddle are located in the guide tube, the first stirring paddle is spirally rotated around the periphery of the first rotating shaft, the first stirring paddle is connected to the first rotating shaft, the second stirring paddle is spirally rotated around the periphery of the second rotating shaft, the first rotating shaft is located above the second rotating shaft, one end of the first rotating shaft extends out of the guide tube, one end of the second rotating shaft is provided with a support shaft, one end of the second stirring paddle is connected to the support shaft, a guide paddle is provided on the support shaft, and the guide paddle is located below the second stirring paddle.

2. The degassing stirring device according to claim 1, characterized in that: The deaeration and stirring device also includes a first fixed rod and a second fixed rod, the lower end of the first stirring paddle is connected to one end of the first fixed rod, and the other end of the first fixed rod is connected to the first rotating shaft; the upper end of the second stirring paddle is connected to one end of the second fixed rod, and the other end of the second fixed rod is connected to the second rotating shaft.

3. The degassing stirring device according to claim 1, characterized in that: The number of the first stirring paddles is two, and the two first stirring paddles are arranged opposite to each other; the number of the second stirring paddles is two, and the two second stirring paddles are arranged opposite to each other.

4. The degassing stirring device according to claim 1, characterized in that: The change trend of the circle radius of the first stirring paddle from top to bottom is any one of the following (I) to (III): (I) gradually increasing, (II) gradually decreasing, (III) first increasing and then gradually decreasing; the circle radius of the second stirring paddle gradually increases or gradually decreases from top to bottom.

5. The degassing stirring device according to claim 1, characterized in that: The winding radius of the first stirring paddle and the winding radius of the second stirring paddle may have the same or different changing trends from top to bottom.

6. The degassing stirring device according to claim 4, characterized in that: When the winding radius of the first stirring paddle and the winding radius of the second stirring paddle both gradually increase from top to bottom, the maximum value of the winding radius of the second stirring paddle is not less than the maximum value of the winding radius of the first stirring paddle.

7. The degassing stirring device according to claim 4, characterized in that: When the winding radius of the first stirring paddle and the winding radius of the second stirring paddle gradually decrease from top to bottom, the minimum value of the winding radius of the second stirring paddle is not greater than the minimum value of the winding radius of the first stirring paddle.

8. The degassing stirring device according to claim 1, characterized in that: The guide paddle is in an arc-shaped structure, and the inner concave surface of the guide paddle faces the second rotating shaft.

9. The degassing stirring device according to claim 1, characterized in that: The first rotating shaft and the second rotating shaft are spaced apart in the vertical direction; the upper end of the first rotating shaft extends out of the guide tube and is connected to the output end of a driving motor, and the lower end of the second rotating shaft extends out of the guide tube and is connected to the output end of another driving motor.

10. The degassing stirring device according to claim 1, characterized in that: The upper end of the first stirring paddle is directly connected to the first rotating shaft; the lower end of the second stirring paddle is connected to one end of the supporting shaft; the central axis of the first rotating shaft and the central axis of the second rotating shaft are on the same straight line.

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