Classification bearing sealing device of pulverizer

Abstract

The utility model provides a crusher grading bearing sealing device which comprises an upper labyrinth ring and a lower labyrinth ring, the lower end face of the upper labyrinth ring is provided with more than two upper grooves, the upper end face of the lower labyrinth ring is provided with lower grooves matched with the upper grooves in a staggered mode, and the depth of the upper grooves is larger than that of the lower grooves. Cavities of the upper groove and the lower groove are filled with lubricating grease. Impurities generated by the bearing can be effectively blocked by the two labyrinth rings on the upper labyrinth ring and the lower labyrinth ring. Meanwhile, lubricating grease is added into the labyrinth ring cavities, gaps between the labyrinth rings are filled, and the sealing performance of the labyrinth rings is further enhanced. The device is convenient to install, easy to operate, low in cost and convenient to maintain and overhaul, metal is matched with non-metal materials, and metal abrasion caused by body parts can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to a crusher classification bearing sealing device, belonging to the technical field of bearing sealing. Background Art

[0002] Lithium battery positive electrode materials are the core materials of lithium batteries, which determine the battery's energy density, voltage, service life, safety and other core performance. Metallic foreign matter in the positive electrode material will undergo oxidation reaction under the action of the electric field, releasing a large amount of heat, which will cause the diaphragm to melt, melt through and accelerate aging, aggravate the battery's self-discharge, and reduce the battery's safety and use. In the process of producing and crushing positive electrode materials, in addition to the necessary wear and tear of the crushing parts of the equipment, there are also unnecessary wear and tear of the bearing transmission parts themselves that introduce foreign matter.

[0003] In existing crushing equipment, the grading bearing is located above the material. During the movement of the bearing, the ball and the inner and outer rings will wear out metal impurities. During the transmission process, in order to fix and seal the bearing, a mechanical seal is usually used. At present, a smooth labyrinth seal is usually used to fix and seal the bearing. This sealing method has a poor sealing effect and cannot effectively prevent impurities generated by bearing wear from entering normal materials. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model proposes a crusher grading bearing sealing device. Based on the original smooth labyrinth seal, the sealing structure of the device is replaced with a zigzag labyrinth seal, and the labyrinth ring of the zigzag labyrinth seal is used to seal and fix the bearing, which can prevent impurities caused by bearing wear from entering the material to the greatest extent.

[0005] The technical solution of the utility model is: a crusher grading bearing sealing device, including an upper labyrinth ring and a lower labyrinth ring, wherein more than two upper grooves are provided on the lower end surface of the upper labyrinth ring, and a lower groove staggered with the upper groove is provided on the upper end surface of the lower labyrinth ring, and the depth of the upper groove is greater than the depth of the lower groove, and the cavities of the upper groove and the lower groove are filled with grease.

[0006] Furthermore, a convex ring is arranged on the outer side of the upper end surface of the upper labyrinth ring, a center sleeve is arranged in the center of the lower labyrinth ring, and the upper end surface of the center sleeve is higher than the upper end surface of the upper labyrinth ring.

[0007] Furthermore, the upper end surface of the center sleeve is flush with the upper end surface of the convex ring.

[0008] Furthermore, the hardness of the upper labyrinth ring is greater than the hardness of the lower labyrinth ring.

[0009] Furthermore, the upper labyrinth ring is made of 304 stainless steel, and the lower labyrinth ring is made of PEEK material.

[0010] Due to the adoption of the above technical solution, the utility model has the advantages that the impurities generated by the bearing can be effectively blocked by the two labyrinth rings on the upper labyrinth and the lower labyrinth. At the same time, grease is added inside the labyrinth ring chamber to fill the gaps between the labyrinth rings, further enhancing the sealing of the labyrinth rings. The device is easy to install, simple to operate, low in cost, and easy to maintain and repair. The use of metal and non-metal materials can effectively avoid metal wear caused by the main body components. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional view of the structural schematic diagram of the utility model.

[0012] Explanation of the reference numerals: 1- transmission shaft; 2- bearing; 3- upper labyrinth ring; 4- lower labyrinth ring; 5- upper groove; 6- lower groove; 7- convex ring; 8- convex ring. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is further described in detail below with reference to the accompanying drawings and embodiments.

[0014] Example

[0015] See also Figure 1 The utility model is a crusher grading bearing sealing device, comprising an upper labyrinth ring 3 and a lower labyrinth ring 4, two upper grooves 5 are provided on the lower end surface of the upper labyrinth ring 3, and a lower groove 6 staggered with the upper groove 5 is provided on the upper end surface of the lower labyrinth ring 4, and the depth of the upper groove 5 is greater than the depth of the lower groove 6, ensuring that there are cavities at the bottom of the upper groove 5 and the lower groove 6, and the cavities of the upper groove 5 and the lower groove 6 are filled with grease.

[0016] A convex ring 7 is arranged outside the upper end surface of the upper labyrinth ring 3, and a center sleeve 8 is arranged in the center of the lower labyrinth ring 4, and the upper end surface of the center sleeve 8 is higher than the upper end surface of the upper labyrinth ring 3. The upper end surface of the center sleeve 8 is flush with the upper end surface of the convex ring 7. The hardness of the upper labyrinth ring 3 is greater than that of the lower labyrinth ring 4. The upper labyrinth ring 3 is a 304 stainless steel structure, and the lower labyrinth ring 4 is a PEEK material structure.

[0017] The working principle of this utility model:

[0018] When in use, first assemble the upper labyrinth ring 3 and the lower labyrinth ring 4 on the transmission shaft 1, and press the outer ring of the bearing 2 through the convex ring 7 on the upper labyrinth ring 3, and press the inner ring of the bearing 2 through the center sleeve 8 of the lower labyrinth ring 4 to prevent radial displacement of the inner and outer rings of the bearing 2. When the transmission shaft 1 starts to rotate, the inner ring of the bearing 2 rotates with it, and its outer ring is in a stationary state. The upper labyrinth ring 3 is also in a stationary state, and the lower labyrinth ring 4 presses the inner ring of the bearing 2 and rotates with it, thereby realizing the normal operation of the transmission shaft 1.

[0019] Since the upper labyrinth ring 3 and the lower labyrinth ring 4 are provided with the upper groove 5 and the lower groove 6 which are staggered, during the operation, the impurities generated by the bearing 2 can be effectively blocked by the two labyrinths of the upper groove 5 and the lower groove 6. At the same time, grease is added into the cavities of the upper groove 5 and the lower groove 6 to fill the gap between the upper groove 5 and the lower groove 6, so as to further enhance the sealing performance of the labyrinth ring.

[0020] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. For those skilled in the art, the technical solution recorded in the above embodiments can be improved and modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A pulverizer grading bearing sealing device, comprising an upper labyrinth ring (3) and a lower labyrinth ring (4), characterized in that: The lower end surface of the upper labyrinth ring (3) is provided with more than two upper grooves (5), and the upper end surface of the lower labyrinth ring (4) is provided with a lower groove (6) staggered with the upper groove (5), and the depth of the upper groove (5) is greater than the depth of the lower groove (6), and the cavities of the upper groove (5) and the lower groove (6) are filled with grease.

2. The crusher classification bearing sealing device according to claim 1, characterized in that: A convex ring (7) is arranged on the outer side of the upper end surface of the upper labyrinth ring (3), and a center sleeve (8) is arranged in the center of the lower labyrinth ring (4), and the upper end surface of the center sleeve (8) is higher than the upper end surface of the upper labyrinth ring (3).

3. The crusher classification bearing sealing device according to claim 2, characterized in that: The upper end surface of the center sleeve (8) is flush with the upper end surface of the convex ring (7).

4. The crusher classification bearing sealing device according to claim 1, characterized in that: The hardness of the upper labyrinth ring (3) is greater than the hardness of the lower labyrinth ring (4).

5. The crusher classification bearing sealing device according to claim 4, characterized in that: The upper labyrinth ring (3) is made of 304 stainless steel, and the lower labyrinth ring (4) is made of PEEK material.

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