Rotary inner cylinder sealing structure for lithium battery stirrer

Abstract

The utility model discloses a rotary inner cylinder sealing structure for a lithium battery mixer, which relates to the field of lithium battery production, and comprises an inner sealing assembly and an outer sealing assembly, the inner sealing assembly comprises a rubber seat arranged on the inner wall of a sealing outer cylinder and a plurality of sealing slide blocks arranged on the outer side surface of the rubber seat and matched with the rotary inner cylinder in a sealing manner; the rubber seat is located at the bottom of the sealing machine cover, the sealing sliding block is in multi-face contact fit with the rotating inner cylinder, an inner sealing groove matched with the sealing sliding block is formed in the inner side of the rotating inner cylinder, and the outer sealing assembly comprises a sealing seat arranged on the inner wall of the sealing outer cylinder and a sealing strip arranged on the sealing seat and in sealing fit with the rotating inner cylinder. An outer sealing groove matched with the sealing strip is formed in the outer side wall of the rotary inner cylinder; the sealing problem between the rotating inner cylinder and the sealing outer cylinder is solved through the inner sealing assembly and the outer sealing assembly, dust in the inner cylinder is prevented from entering an interlayer between the inner cylinder and the outer cylinder, and equipment faults such as gear locking on the inner and outer cylinder mounting plate caused by dust leakage are eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, and particularly relates to a rotating inner cylinder sealing structure for a lithium battery mixer. Background Art

[0002] A lithium battery is a type of battery with lithium metal or lithium alloy as the positive / negative electrode material and using a non-aqueous electrolyte solution. With the development of science and technology, lithium batteries have become the mainstream and are widely used in life and production. Especially with the current research breakthroughs in new materials, the application fields of lithium batteries have been significantly expanded, such as the new energy vehicles that are being vigorously promoted currently.

[0003] In lithium batteries, electrode paste is one of the key raw materials. For electrode paste, it is required to have good performance. During the production process, it needs to be fully stirred to ensure that the preparation raw materials are fully mixed, avoiding phenomena such as sedimentation, flocculation and agglomeration, which may produce large particles and affect subsequent processes such as coating. In the current rotating seal of existing lithium battery mixers, between the upper end face of the rotating inner cylinder and the lower end face of the sealing machine cover, and between the upper outer cylindrical surface of the rotating inner cylinder and the inner sealing groove of the sealing outer cylinder, a polytetrafluoroethylene packing is used for rotating seal. Due to the machining accuracy of the rotating inner cylinder and the assembly relationship, etc., there will be relatively large runout on the upper end face and the upper outer cylindrical surface of the rotating inner cylinder. And the polytetrafluoroethylene packing has no elasticity and there are gaps during operation, causing the powder in the rotating inner cylinder to enter the interlayer between the rotating inner cylinder and the sealing outer cylinder, resulting in equipment failures. Summary of the Invention

[0004] In view of this, the purpose of the utility model is to provide a rotating inner cylinder sealing structure for a lithium battery mixer, to solve the sealing problem between the rotating inner cylinder and the sealing outer cylinder, minimize the entry of dust in the inner cylinder into the interlayer between the inner cylinder and the outer cylinder, and prevent equipment failures such as gear jamming on the inner and outer cylinder mounting plates caused by dust leakage.

[0005] The rotating inner cylinder sealing structure for a lithium battery mixer provided by the utility model adopts the following technical solutions:

[0006] A rotating inner cylinder sealing structure for a lithium battery mixer includes an inner sealing component and an outer sealing component. The inner sealing component includes a rubber seat arranged on the inner wall of the sealing outer cylinder and a plurality of sealing sliders arranged on the outer side surface of the rubber seat for sealing cooperation with the rotating inner cylinder. The rubber seat is located at the bottom of the sealing machine cover. The sealing sliders are in multi-surface contact and cooperation with the rotating inner cylinder. An inner sealing groove for cooperating with the sealing sliders is arranged on the inner side of the rotating inner cylinder. The outer sealing component includes a sealing seat arranged on the inner wall of the sealing outer cylinder and a sealing strip arranged on the sealing seat for sealing cooperation with the rotating inner cylinder. An outer sealing groove for cooperating with the sealing strip is arranged on the outer side wall of the rotating inner cylinder.

[0007] Further, the inner sealing assembly further includes a mounting seat disposed on the inner wall of the sealing outer cylinder and at the bottom of the sealing machine cover, the rubber seat is disposed on the inner wall of the mounting seat, and the sealing seat is located below the mounting seat.

[0008] Further, the bottom of the mounting seat cooperates with the sealing seat to limit the upper sealing strip.

[0009] Further, sealing rubber tubes are disposed at both the upper and lower ends of the sealing seat, and the outer circle of the sealing strip abuts against the inner circle of the sealing rubber tube.

[0010] Further, two sealing strips are disposed at both the upper and lower ends of the sealing seat, and the bottom of the mounting seat protrudes downward and abuts against the upper sealing rubber tube.

[0011] Further, the bottom of the sealing seat protrudes downward and abuts against the lower sealing rubber tube.

[0012] In summary, the present utility model includes at least one of the following beneficial effects: the sealing problem between the rotating inner cylinder and the sealing outer cylinder is solved by the inner sealing assembly and the outer sealing assembly, and the dust in the inner cylinder entering the interlayer between the inner cylinder and the outer cylinder is minimized as much as possible, and equipment failures such as gear jamming on the inner and outer cylinder mounting plates caused by dust leakage are eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0014] Figure 2 is Figure 1 an enlarged view of part A in

[0015] Description of the reference numerals:

[0016] 1. Inner sealing assembly; 11. Rubber seat; 12. Sealing slider; 13. Mounting seat; 2. Outer sealing assembly; 21. Sealing seat; 22. Sealing strip; 23. Sealing rubber tube; 3. Sealing machine cover; 4. Rotating inner cylinder; 41. Inner sealing groove; 42. Outer sealing groove; 5. Sealing outer cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following specific examples illustrate the embodiments of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model.

[0018] The following further elaborates on the present utility model in conjunction with the attached Figure 1-2 drawings.

[0019] An embodiment of the utility model discloses a rotating inner cylinder sealing structure for a lithium battery mixer. Refer to Figure 1 - Figure 2 , the rotating inner cylinder sealing structure for a lithium battery mixer includes an inner sealing component 1 and an outer sealing component 2. The inner sealing component 1 includes a rubber seat 11 arranged on the inner wall of the sealing outer cylinder 5 and a plurality of sealing sliders 12 arranged on the outer side surface of the rubber seat 11 for sealing cooperation with the rotating inner cylinder 4. The rubber seat 11 is located at the bottom of the sealing machine cover 3. The sealing sliders 12 are in multi-faceted contact with the rotating inner cylinder 4. One end of the sealing slider 12 in contact with the rotating inner cylinder 4 is provided with three inclined surfaces. An inner sealing groove 41 for cooperating with the sealing slider 22 is arranged on the inner side of the rotating inner cylinder 4. The sealing slider 12 is in contact with the inner sealing groove 41 on three sides, and the sealing effect is better. The sealing slider 12 is fixed on the rubber seat 11 by bolts. The outer sealing component 2 includes a sealing seat 21 arranged on the inner wall of the sealing outer cylinder 5 and a sealing strip 22 arranged on the sealing seat 21 for sealing cooperation with the rotating inner cylinder 4. An outer sealing groove 42 for cooperating with the sealing strip 22 is arranged on the outer side wall of the rotating inner cylinder 4. The rotating inner cylinder 4 is fixed on the inner and outer cylinder mounting plate through a slewing bearing. The sealing outer cylinder 5 is fixed on the inner and outer cylinder mounting plate. The sealing machine cover 3 is fixed on the sealing outer cylinder 5. The sealing problem between the rotating inner cylinder 4 and the sealing outer cylinder 5 is solved through the inner sealing component 1 and the outer sealing component 2, and the dust in the rotating inner cylinder 4 entering the interlayer between the rotating inner cylinder 4 and the sealing outer cylinder 5 is reduced as much as possible, and equipment failures such as gear jamming on the inner and outer cylinder mounting plates caused by dust leakage are eliminated.

[0020] In this embodiment, the inner sealing component 1 further includes a mounting seat 13 arranged on the inner wall of the sealing outer cylinder 5 and located at the bottom of the sealing machine cover 3. The rubber seat 11 is installed on the inner wall of the mounting seat 13 through an inner hexagon bolt. The sealing seat 21 is located below the mounting seat 13.

[0021] In this embodiment, two sealing strips 22 are arranged at the upper and lower ends of the sealing seat 21. The outer sealing groove 42 is a double-layer groove and cooperates with the sealing strip 22 to form a double-layer seal. Both sealing strips 22 are in double-layer seal with the rotating inner cylinder 4, so that the sealing effect is better during the rotation of the rotating inner cylinder 4.

[0022] In this embodiment, sealing rubber hoses 23 are arranged at both the upper and lower ends of the sealing seat 21. The outer ring of the sealing strip 22 abuts against the inner ring of the sealing rubber hose 23. The sealing strip 22 abuts against the sealing rubber hose 23. The sealing rubber hose 23 is an elastic hollow rubber hose. When the rotating inner cylinder 4 rotates clockwise, the sealing rubber hose 23 plays the role of an axial compression spring. The outer end sealing strip 22 on the rotating inner cylinder 4 elastically contacts and slides in the double-layer groove on the outer circumference of the rotating inner cylinder 4 to form a double-layer labyrinth seal, ensuring that the powder in the rotating inner cylinder 4 cannot leak into the interlayer between the rotating inner cylinder 4 and the sealing outer cylinder 5.

[0023] In this embodiment, the bottom of the mounting base 13 cooperates with the sealing base 21 to limit the sealing strip 22 located above, preventing the sealing strip 22 from falling off when the rotating inner cylinder 4 rotates.

[0024] In this embodiment, the bottom of the mounting base 13 protrudes downward and abuts against the sealing rubber tube 14 located above, and the protruding part of the mounting base 13 can fix the sealing rubber tube 14.

[0025] In this embodiment, the bottom of the sealing base 21 protrudes downward and abuts against the sealing rubber tube 23 located below, and the protruding part of the sealing base 21 can fix the sealing rubber tube 14.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A rotary inner cylinder sealing structure for a lithium battery mixer, characterized in that: It includes an inner sealing assembly (1) and an outer sealing assembly (2). The inner sealing assembly (1) includes a rubber seat (11) arranged on the inner wall of the sealing outer cylinder (5) and a number of sealing sliders (12) arranged on the outer side surface of the rubber seat (11) for sealing cooperation with the rotating inner cylinder (4). The rubber seat (11) is located at the bottom of the sealing machine cover (3). The sealing sliders (12) are in multi-faceted contact and cooperation with the rotating inner cylinder (4). An inner sealing groove (41) for cooperating with the sealing slider (22) is arranged inside the rotating inner cylinder (4). The outer sealing assembly (2) includes a sealing seat (21) arranged on the inner wall of the sealing outer cylinder (5) and a sealing strip (22) arranged on the sealing seat (21) for sealing cooperation with the rotating inner cylinder (4). An outer sealing groove (42) for cooperating with the sealing strip (22) is arranged on the outer side wall of the rotating inner cylinder (4).

2. The rotary inner cylinder sealing structure for a lithium battery mixer according to claim 1, wherein: The inner sealing assembly (1) further includes a mounting seat (13) arranged on the inner wall of the sealing outer cylinder (5) and located at the bottom of the sealing machine cover (3). The rubber seat (11) is arranged on the inner wall of the mounting seat (13). The sealing seat (21) is located below the mounting seat (13).

3. The rotary inner cylinder sealing structure for a lithium battery mixer according to claim 2, characterized in that: The bottom of the mounting seat (13) cooperates with the sealing seat (21) to limit the sealing strip (22) located above.

4. The rotary inner cylinder sealing structure for a lithium battery mixer according to claim 1, characterized in that: Sealing rubber tubes (23) are arranged at both the upper and lower ends of the sealing seat (21). The outer ring of the sealing strip (22) abuts against the inner ring of the sealing rubber tube (23).

5. The rotary inner cylinder sealing structure for a lithium battery mixer according to claim 4, characterized in that: Two sealing strips (22) are arranged at both the upper and lower ends of the sealing seat (21). The bottom of the mounting seat (13) protrudes downward and abuts against the sealing rubber tube (14) located above.

6. The rotary inner cylinder sealing structure for a lithium battery mixer according to claim 5, characterized in that: The bottom of the sealing seat (21) protrudes downward and abuts against the sealing rubber tube (23) located below.

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