CN108905302B

CN108905302B - Degassing device

Info

Publication number: CN108905302B
Application number: CN201811102126.4A
Authority: CN
Inventors: 张朝鑫; 张仰彪; 胡金辉; 计从兴; 张枭祥
Original assignee: Xiamen Insvac Intelligent Equipment Co ltd
Current assignee: Xiamen Insvac Intelligent Equipment Co ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2023-09-26
Anticipated expiration: 2038-09-20
Also published as: CN108905302A

Abstract

The application discloses a degassing device, which comprises: a first driving device; one end of the stirring device is connected with the first driving device; the other end of the stirring device penetrates through the through hole of the tank cover and is arranged in the tank body, the tank body is in sealing connection with the tank cover, and the tank cover is provided with a raw material inlet; the tank body is internally provided with a film distribution disc, and the film distribution disc surrounds and is fixed on the stirring device so that sizing material flows from the raw material inlet to the film distribution disc and flows on the film distribution disc to form a film. The degassing device can complete the degassing and dewatering operation of the sizing material in the online flowing process of the sizing material in a vacuum environment, can realize continuous production, improves the production efficiency, reduces the equipment cost and has small equipment occupation area.

Description

Degassing device

Technical Field

The application relates to the field of degassing and dehydration, in particular to a degassing device.

Background

In the fields of pouring, potting, spot coating and pressure forming of electric and electronic insulating adhesives, the insulating adhesive raw materials are often required to be degassed and dehydrated under vacuum so as to ensure that the insulating performance of the produced insulating adhesive products is qualified.

At present, a mode of degassing and dehydrating an insulating adhesive raw material by a vacuum degassing preparation tank is widely adopted, and the working mode is as follows: the insulating adhesive raw material is sent into a vacuum defoaming preparation tank in a vacuum sucking and conveying mode or a pump conveying mode, and the insulating adhesive raw material is stirred by a stirring paddle, spirally lifted and forms a film flow along an umbrella-shaped cover, so that dehydration and degassing are realized. However, the way in which this vacuum degassing tank is used to achieve degassing and dewatering has the following main drawbacks:

(1) The dehydration and the degassing of a whole tank of insulating rubber raw material are needed to be realized, if the rubber material subjected to the dehydration and the degassing operation is directly metered and conveyed to a downstream mixing operation unit from a vacuum degassing tank, the requirement of continuously producing the rubber material cannot be met, and the production efficiency is low;

(2) If continuous production is required, an intermediate storage tank is required to be arranged between the vacuum defoaming storage tank and the mixing operation unit, when the vacuum defoaming storage tank is subjected to degassing and dewatering operation, the mixing operation unit obtains the degassed and dewatered sizing material from the intermediate storage tank, and the vacuum defoaming storage tank can complete the degassing and dewatering operation of a whole sizing material and convey the sizing material to the intermediate storage tank when the material level of the intermediate storage tank is close to the low material level of the intermediate storage tank. From the foregoing, it is apparent that the need to add additional intermediate storage tanks and gum material transfer systems in this manner results in low production efficiency, high equipment costs, and large floor space.

Disclosure of Invention

Aiming at the problems, the application aims to provide a degassing device which can realize the degassing and dewatering operation of the sizing material in the online flowing process of the sizing material under the vacuum environment, can realize continuous production, improves the production efficiency, reduces the equipment cost and has small occupied area.

In order to achieve the above purpose, the technical scheme provided by the application is as follows: a degasser, comprising: a first driving device; one end of the stirring device is connected with the first driving device; the other end of the stirring device penetrates through the through hole of the tank cover and is arranged in the tank body, the tank body is in sealing connection with the tank cover, and the tank cover is provided with a raw material inlet; the tank body is internally provided with a film distribution disc, and the film distribution disc surrounds and is fixed on the stirring device so that sizing material flows from the raw material inlet to the film distribution disc and flows on the film distribution disc to form a film.

According to one embodiment of the present application, the inner surface of the cloth membrane tray is gradually inclined downward in a direction from the outer periphery of the cloth membrane tray to the center thereof, and the inner surface of the cloth membrane tray is a cambered surface, a conical surface or a spherical surface.

According to one embodiment of the application, the tank body is provided with a fixing device, at least one inner disc and at least one outer disc, the at least one inner disc and the at least one outer disc are fixed on the fixing device, the at least one inner disc is arranged between the membrane distribution disc and the at least one outer disc, the at least one inner disc and the at least one outer disc are arranged at intervals, each inner disc is provided with a first through hole, each outer disc is provided with a second through hole, and the first through hole and the second through hole are used for the stirring device to pass through.

According to an embodiment of the present application, the fixing means includes first fixing means and second fixing means, one end of the first fixing means is fixed to the can lid, and the other end thereof passes through an outer edge of one side of the at least one inner disc and the at least one outer disc, respectively, to fix the at least one inner disc and the at least one outer disc; one end of the second fixing means is fixed to the can cover and the other end thereof passes through the outer edges of the other sides of the at least one inner and outer disks, respectively, to fix the at least one inner and outer disks.

According to one embodiment of the application, said at least one inner disc is inclined stepwise downwards and said at least one outer disc is inclined stepwise upwards in a direction away from said stirring device.

According to one embodiment of the application, the symmetry axis of said at least one inner disc and the symmetry axis of said at least one outer disc coincide; the diameter of the first through hole is smaller than that of the second through hole; the outer periphery of the at least one outer disc exceeds the outer periphery of the at least one inner disc in a circumferential direction along the stirring device.

According to one embodiment of the application, said at least one inner disc is provided with at least one first roller in contact with the corresponding said at least one inner disc; the at least one outer disc is provided with at least one second roller, and the at least one second roller is in contact with the corresponding at least one outer disc; the stirring device is provided with a plurality of second driving devices, and the second driving devices are respectively connected with the at least one first roller and the at least one second roller which are corresponding to each other so as to drive the at least one first roller and the at least one second roller to rotate.

According to one embodiment of the application, the bottom of the stirring device is provided with a grid-shaped stirring paddle.

According to one embodiment of the application, the degassing device further comprises a first sealing device arranged between the drive device and the tank cover, which surrounds the stirring device and is in sealing connection with the stirring device.

According to one embodiment of the application, a second sealing device is arranged between the first sealing device and the membrane distribution disc, the second sealing device comprises a rotating disc and a fixed disc, the rotating disc surrounds and is fixed on the stirring device, the outer periphery of the rotating disc is bent towards the fixed disc to form a first annular convex part, the outer periphery of the fixed disc is bent towards the rotating disc to form a second annular convex part, and a gap is reserved between the outer cylindrical surface of the first annular convex part and the inner cylindrical surface of the second annular convex part.

By adopting the technical scheme, the application has the following beneficial effects:

(1) The combination of a film distribution disc, an inner disc, an outer disc and the like is arranged in the tank, so that the quick and continuous degassing and dehydration operation of the sizing material can be realized, and the production efficiency of the sizing material can be improved;

(2) In the process of producing the sizing material in rapid continuity, the sizing material can be finished by only one degassing device, the cost of required equipment can be reduced, and the occupied area of the equipment is small;

(3) By arranging the second sealing device, the service life of the first sealing device can be prolonged, and the product quality of the produced product can be ensured.

Drawings

FIG. 1 is a cross-sectional view of a degasser of the present application;

FIG. 2 is a schematic view of the first sealing device and stirring device in FIG. 1;

FIG. 3 is a schematic view of an inner disc, first roller, second drive means and stirring means of FIG. 1;

FIG. 4 is a schematic view of an outer disk, a second roller, a second driving device and a stirring device in FIG. 1.

Wherein:

1. a first driving device; 11. a mounting base;

2. a stirring device; 21. a second driving device; 22. grid-type stirring paddles;

3. a tank body; 31. an inner disk; 311. a first through hole; 312. a flat portion; 313. an inclined portion; 314. a first concave portion; 32. an outer disc; 321. a second through hole; 322. a second concave portion; 323. an annular bending part; 33. a first fixing device; 34. a second fixing device; 35. a first roller; 351. a first roller body; 352. a first roller shaft; 36. a second roller; 361. a second roller body; 362. a second roller shaft;

4. a can lid; 5. film distribution plate; 6. a raw material inlet; 7. a bleed outlet; 8. a first sealing device;

9. a second sealing device; 91. a rotating disc; 911. a first annular protrusion; 92. a fixed plate; 921. a second annular protrusion; 922. an annular recessed portion;

10. a sizing material outlet; 20. an annular groove.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1, a degassing apparatus includes: a first driving device 1 provided on the mount 11; one end of the stirring device 2 is connected with the first driving device 1, and the first driving device 1 is used for driving the stirring device 2 to rotate, for example, the stirring device can be a driving motor, and the application is not limited to the driving motor; the other end of the stirring device 2 passes through a through hole of the tank cover 4 and is arranged in the tank body 3, the tank body 3 is in sealing connection with the tank cover 4, a raw material inlet 6 is arranged on the tank cover 4, a suction outlet can be further arranged on the tank cover 4 for sucking air from the tank body 3 to realize degassing and dewatering treatment of sizing materials in a vacuum environment, the suction outlet can be also arranged on the tank body 3, and a sizing material outlet 10 is further arranged at the bottom of the tank body 3 for collecting sizing materials subjected to degassing and dewatering treatment; wherein, be equipped with cloth membrane dish 5 in the jar body 3, this cloth membrane dish 5 encircles and fixes on this agitating unit 2, and this cloth membrane dish 5 can rotate along with this agitating unit 2 under the drive of first drive arrangement 1 to make sizing material flow to this cloth membrane dish 5 from this raw materials entry 6, and flow the film formation on this cloth membrane dish 5. By arranging the film-distributing disc 5, the sizing material can be uniformly distributed on the film-distributing disc 5 under the action of gravity, such as the vicinity of the outer periphery of the film-distributing disc 5.

As shown in fig. 1, in one embodiment of the present application, the inner surface of the cloth tray 5 is gradually inclined downward in a direction from the outer periphery of the cloth tray 5 toward the center thereof, and it is also understood that the cloth tray 5 has a recess recessed toward the bottom of the can 3 so that the glue flowing onto the cloth tray 5 can further flow toward the bottom of the can 3 (as indicated by the arrow in fig. 1). In some embodiments, the inner surface of the cloth tray 5 may be preferably an arc surface, a conical surface, a spherical surface, or the like, which is not limited to the present application. By adopting the arrangement, the sizing material which is annularly distributed on the outer periphery of the membrane distribution disc 5 flows to the stirring device 2 along the inclined direction of the inner surface of the membrane distribution disc 5 and is unfolded into a sizing material liquid membrane, the liquid membrane can enable gas and water originally dissolved in the liquid membrane to be continuously separated into bubbles in a vacuum environment, and then the bubbles are pumped into an external environment along with the vacuumizing treatment so as to finish the degassing and dehydration treatment of the sizing material.

In one embodiment of the present application, as shown in fig. 1, 3 and 4, in order to further enhance the degassing and dewatering effect on the rubber compound, a fixing means, at least one inner disc 31 and at least one outer disc are provided in the tank 3, the at least one inner disc 31 and the at least one outer disc 32 are fixed to the fixing means, the at least one inner disc 31 is provided between the cloth disc 5 and the at least one outer disc 32, the at least one inner disc 31 and the at least one outer disc 32 are provided with a first through hole 311, the at least one outer disc 32 is provided with a second through hole 321, the first through hole 311 and the second through hole 321 are provided for the stirring means 2 to pass through, and the second through hole 321 allows the rubber compound on the outer disc 32 to flow to the inner disc 31 of the next layer through the second through hole 321. It will be appreciated that the tank 3 may be provided with a plurality of inner discs 31 and a plurality of outer discs 32, the specific number being determined by the specific requirements and application, and the plurality of inner discs 31 and the plurality of outer discs 32 being spaced apart from each other so that the glue flows in sequence over the plurality of inner discs 31 and the plurality of outer discs 32, thereby extending the flow path of the glue and improving the degassing and dewatering process of the glue. In one embodiment of the present application, only one membrane distribution disc 5 and one inner disc 31 may be disposed in the tank 3, and the inner disc 31 is disposed below the membrane distribution disc 5.

In one embodiment of the present application, as shown in fig. 3, each inner disc 31 includes a flat portion 312 and an inclined portion 313 connected to the flat portion 312, the outer side edge of the flat portion 312 forms the first through hole 311 around the stirring device 2, and the glue stock flowing onto the inner disc 31 can smoothly enter the inclined portion 313 to be spread into a liquid film by the flat portion 312 to further flow, thereby improving the degassing and dewatering process of the glue stock. Preferably, the diameter of the first through hole 311 is smaller than that of the second through hole 321, so that the glue on the outer disc 32 can smoothly flow to the flat portion 312 of the inner disc 31 through the second through hole 321 and then flow to the inclined portion 313 of the inner disc 31, and the glue can sequentially flow between the inner discs 31 and the outer discs 32 to further improve the degassing and dewatering effects of the glue.

In one embodiment of the present application, as shown in fig. 1, the fixing means includes a first fixing means 33 and a second fixing means 34, one end of the first fixing means 33 is fixed to the can lid 4, and the other end thereof passes through an outer edge of one side of the at least one inner disc 31 and the at least one outer disc 32 to fix the at least one inner disc 31 and the at least one outer disc 32, respectively; one end of the second fixing means 34 is fixed to the can lid 4 and the other end thereof passes through outer edges of the other sides of the at least one inner disc 31 and the at least one outer disc 32, respectively, to fix the at least one inner disc 31 and the at least one outer disc 32. Specifically, the first fixing device 33 and the second fixing device 34 may be suspension rods, which is not limited to the present application. In other embodiments, more than three securing means may be provided to increase the securing of inner disc 31 and outer disc 32.

In one embodiment of the application, in order to allow a more smooth flow of gum material between the inner and outer discs 31, 32, the at least one inner disc 31 is inclined stepwise downwards and the at least one outer disc 32 is inclined stepwise upwards in a direction away from the stirring device 2. It will be appreciated that each inner disc 31 has a first recess 314 at the center and a second recess 322 at the center of each outer disc 32, with the first recess 314 of each inner disc 31 being recessed in a direction opposite to the second recess 322 of its corresponding outer disc 32, as shown in fig. 1, 3 and 4. By this arrangement, the sizing material can flow between the plurality of inner discs 31 and the plurality of outer discs 32 in order more smoothly to further enhance the degassing and dewatering effects of the sizing material.

In one embodiment of the present application, as shown in FIG. 1, the symmetry axis of the at least one inner disk 31 coincides with the symmetry axis of the at least one outer disk 32; in the circumferential direction of the stirring device 2, the outer circumference of the at least one outer disc 32 exceeds the outer circumference of the at least one inner disc 31 so that the sizing material on the inner disc 31 can smoothly flow onto the outer circumference of the outer disc 32 of the next layer, the sizing material can sequentially flow between the inner discs 31 and the outer discs 32, and the degassing and dewatering treatment effect of the sizing material can be improved. It is to be understood that the circumferential direction refers to a circumferential direction centered on the symmetry axis of the stirring device 2. As shown in fig. 1 and 4, the outer periphery of each outer disc 32 may further be formed with an annular bending portion 323 upwardly in the direction toward the can lid 4, so as to prevent the glue flowing down from the outer periphery of the inner disc 31 of the upper layer thereof from being directly sputtered to the bottom of the can body 3, so that the glue can smoothly flow onto the surface of the corresponding outer disc 32.

In order to further enhance the degassing and dewatering effect on the sizing material, in one embodiment of the application, as shown in fig. 1, 3 and 4, the at least one inner disc 31 is provided with at least one first roller 35, which at least one first roller 35 is in contact with the corresponding at least one inner disc 31; the at least one outer disc 32 is provided with at least one second roller 36, the at least one second roller 36 being in contact with the corresponding at least one outer disc 32; the stirring device 2 is provided with a plurality of second driving devices 21, and the plurality of second driving devices 21 are respectively connected with the corresponding at least one first roller 35 and the at least one second roller 36 to drive the at least one first roller 35 and the at least one second roller 36 to rotate (as indicated by rotating arrows in fig. 1). The at least one first roller 35 and the at least one second roller 36 are rotatable while being rotated by the rotation of the stirring device 2, driven by the respective second driving devices 21. [A1] The liquid film of the sizing material flowing on the surfaces of the inner disc 31 and the outer disc 32 can be crushed, so that bubbles separated from the liquid film can be crushed and crushed continuously, and further the degassing and dewatering effects of the sizing material can be achieved. It should be noted that a plurality of first rollers 35 may be provided on each inner disc 31, and a plurality of second rollers 36 may be provided on each outer disc 32; it is also possible to provide at least one first roller 35 only on each inner disc 31, or at least one second roller 36 only on each outer disc 32, etc., the application is not limited thereto.

In one embodiment of the present application, as shown in fig. 1, 3 and 4, the first roller 35 may include a first roller body 351 and a first roller shaft 352, the first roller body 351 being circumferentially disposed on the first roller shaft 352, one end of the first roller shaft 352 being connected to the corresponding second driving device 21, the other end thereof being penetrated from the first roller body 351 and being provided with a nut to fix the first roller body 351; the second roller 36 may also be configured in the same manner, and may include a second roller body 361 and a second roller shaft 362, where the second roller 36 body is disposed around the second roller shaft 362, and one end of the second roller shaft 362 is connected to the corresponding second driving device 21, and the other end of the second roller shaft 362 extends out from the second roller body 361 and is provided with a nut to fix the second roller body 361. In one embodiment, as shown in fig. 3 and 4, a plurality of annular grooves 20 may be further provided on the outer surfaces of the first roller body 351 and the second roller body 361 to enhance the rolling and crushing action on the liquid film bubbles to improve the degassing efficiency of the compound.

In addition, in order to further improve the degassing and dewatering effects on the sizing material, in one embodiment of the present application, as shown in fig. 1, a grid-shaped stirring paddle 22 is disposed at the bottom of the stirring device 2, and the grid-shaped stirring paddle 22 can rotate along with the rotation of the stirring device 2, so that the sizing material at the bottom of the tank 3 can be continuously stirred layer by layer, and bubbles possibly remained in the sizing material are driven out or broken to further improve the degassing and dewatering effects on the sizing material, and meanwhile, the powder filler contained in the sizing material can be prevented from precipitating, so that the quality of the product can be further ensured.

In one embodiment of the application, as shown in fig. 1, the degassing device further comprises a first sealing means 8, which first sealing means 8 is arranged between the drive means and the tank cover 4, which first sealing means 8 surrounds the stirring device 2 and is in sealing connection with the stirring device 2. The first sealing device 8 does not affect the rotation of the stirring device 2, and can realize dynamic sealing of the stirring device 2.

In order to extend the service life of the first sealing means 8 and to ensure the quality of the produced product, in one embodiment of the application, as shown in fig. 1, a second sealing means 9 is provided between the first sealing means 8 and the film-laying plate 5, the second sealing means 9 comprising a rotating plate 91 and a fixed plate 92, the rotating plate 91 surrounding and fixed on the stirring device 2, the outer periphery of the rotating plate 91 being bent in a direction towards the fixed plate 92 to form a first annular protrusion 911, the outer periphery of the fixed plate 92 being bent in a direction towards the rotating plate 91 to form a second annular protrusion 921, a gap being provided between the outer cylindrical surface of the first annular protrusion 911 and the inner cylindrical surface of the second annular protrusion 921, as can be seen in fig. 1 and 2. By the second sealing device 9, a gap seal can be formed on the premise of not influencing the normal rotation of the stirring device 2, glue stock can be prevented from being infiltrated upwards to corrode the first sealing device 8, and the service life of the first sealing device 8 is ensured; at the same time, the rotating disc 91 can prevent the abradant falling down into the glue stock in the can due to the rotational friction at the sealing position contacted with the stirring device 2 by the first sealing device 8 in the rotation process of the stirring device 2, thereby affecting the quality of the produced product. Wherein, the fixing plate 92 may be provided with an annular recess 922 at a position corresponding to the first annular protrusion 911 to accommodate the front end of the first annular protrusion 911.

In addition, in order to increase the overall tightness of the degassing device, as shown in fig. 1, the first sealing device 8 is provided with an annular groove on the contact surface with the tank cover 4, an annular groove 20 may be provided on the contact surface between the tank body 3 and the tank cover 4 and the contact surface between the fixing plate 92 and the stirring device 2 (as shown in fig. 2), and a sealing ring may be provided in each annular groove 20 to pass through the tightness between the two sealing rings, wherein the sealing ring may be an O-type sealing ring or a square sealing ring, or other sealing rings may be selected, and the application is not limited thereto.

The working principle of the application can be as follows:

as shown in fig. 1 (in which the arrow indicates the flow direction of the sizing material), the internal cavity of the tank 3 is continuously vacuumized through the air suction outlet, so that the internal cavity environment of the tank 3 is continuously in a vacuum state, and the driving motor drives the stirring device 2 to rotate. The sizing material flows into the tank body 3 through a raw material inlet 6 arranged on the tank cover 4, the film distribution disc 5 rotates along with the stirring device 2, and the sizing material is uniformly distributed on the inner surface of the film distribution disc 5 in a ring under the action of gravity and then uniformly flows and spreads into a sizing material liquid film along the inner surface (conical surface or spherical surface) of the sizing material. In a vacuum environment, gas and water originally dissolved in the sizing liquid film are continuously separated out into bubbles. Then, the rubber material liquid film is gradually flowed under the action of gravity through the multilayer inner disc 31 and the multilayer outer disc 32, the degassing and the dewatering of the rubber material can be completed quickly and continuously, and then the rubber material flowing into the bottom of the tank body 3 can be stirred by the grid-shaped stirring paddles 22 arranged at the bottom of the stirring device 2 so as to further improve the degassing effect, and simultaneously, the rubber material can be continuously discharged through the rubber material outlet 10 arranged at the bottom of the tank body 3, so that the relatively stable rubber material liquid level is maintained at the bottom of the tank body 3 so as to complete the continuous production of the rubber material.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

While the application has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the application as defined by the appended claims.

Claims

1. A degasser, comprising:

a first driving device;

one end of the stirring device is connected with the first driving device; and

the stirring device comprises a tank body and a tank cover, wherein the other end of the stirring device penetrates through a through hole of the tank cover and is arranged in the tank body, the tank body is in sealing connection with the tank cover, and a raw material inlet is formed in the tank cover;

wherein a film distributing disc is arranged in the tank body, the film distributing disc surrounds and is fixed on the stirring device so that sizing material flows from the raw material inlet to the film distributing disc and flows on the film distributing disc to form a film,

the tank body is internally provided with a fixing device, at least one inner disc and at least one outer disc, the at least one inner disc and the at least one outer disc are fixed on the fixing device, the at least one inner disc is arranged between the membrane distribution disc and the at least one outer disc, the at least one inner disc and the at least one outer disc are mutually arranged at intervals, each of the at least one inner disc is provided with a first through hole, each of the at least one outer disc is provided with a second through hole, the first through hole and the second through hole are used for the stirring device to pass through,

said at least one inner disc being provided with at least one first roller in contact with the corresponding said at least one inner disc; the at least one outer disc is provided with at least one second roller, and the at least one second roller is in contact with the corresponding at least one outer disc; the stirring device is provided with a plurality of second driving devices, and the second driving devices are respectively connected with the at least one first roller and the at least one second roller which are corresponding to each other so as to drive the at least one first roller and the at least one second roller to rotate.

2. The degassing device according to claim 1, wherein an inner surface of the membrane distribution plate is gradually inclined downward in a direction from an outer periphery of the membrane distribution plate to a center thereof, and the inner surface of the membrane distribution plate is an arc surface, a cone surface or a sphere surface.

3. The degasser of claim 1, wherein said securing means comprises first and second securing means, one end of said first securing means being secured to said lid and the other end passing from an outer edge of one side of said at least one inner disk and said at least one outer disk, respectively, to secure said at least one inner disk and said at least one outer disk; one end of the second fixing means is fixed to the can cover and the other end thereof passes through the outer edges of the other sides of the at least one inner and outer disks, respectively, to fix the at least one inner and outer disks.

4. The degasser of claim 1, wherein said at least one inner disk is progressively downwardly sloped and said at least one outer disk is progressively upwardly sloped in a direction away from said stirring device.

5. The degasser of claim 1, wherein the axis of symmetry of said at least one inner disk and the axis of symmetry of said at least one outer disk coincide; the diameter of the first through hole is smaller than that of the second through hole; the outer periphery of the at least one outer disc exceeds the outer periphery of the at least one inner disc in a circumferential direction along the stirring device.

6. The degasser of claim 1, wherein a bottom of said agitator is provided with a grid-shaped paddle.

7. The degasser of any of claims 1-6, further comprising a first sealing device disposed between the drive device and the canister lid, the first sealing device surrounding and sealingly connected to the stirring device.

8. The degasser of claim 7, wherein a second sealing means is provided between said first sealing means and said membrane distribution plate, said second sealing means comprising a rotating plate and a fixed plate, said rotating plate surrounding and fixed to said stirring means, an outer periphery of said rotating plate being bent in a direction toward said fixed plate to form a first annular protrusion, an outer periphery of said fixed plate being bent in a direction toward said rotating plate to form a second annular protrusion, a gap being provided between an outer cylindrical surface of said first annular protrusion and an inner cylindrical surface of said second annular protrusion.