CN219198137U

CN219198137U - Sealing structure for preventing powder leakage

Info

Publication number: CN219198137U
Application number: CN202223525794.2U
Authority: CN
Inventors: 吴超; 周永泉; 栾建
Original assignee: Dalian Bihai Environmental Protection Equipment Co ltd
Current assignee: Dalian Bihai Environmental Protection Equipment Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-16
Anticipated expiration: 2032-12-29

Abstract

The present utility model relates to a sealing structure for preventing powder leakage, comprising: the material end sealing shell, the compression spring, the wear-resisting plate, the first asbestos and the second asbestos; the material end sealing shell is arranged on the shell of the rotating component; a first asbestos is arranged between the material end sealing shell and a transmission shaft in the shell; a second asbestos is arranged between the shell and the transmission shaft; a plurality of groups of compression springs are arranged between the first asbestos and the second asbestos; the second asbestos faces away from the side face of the first asbestos. The device provided by the utility model can effectively prevent the leakage problem of powder materials conveyed by the rotary member, and has a good sealing effect.

Description

Sealing structure for preventing powder leakage

Technical Field

The utility model relates to the technical field of sealing structures, in particular to a sealing structure for preventing powder leakage.

Background

The gland type sealing structure is generally adopted in the sealing structure of the rotating component of the powder material conveying system in the industries of electric power, metallurgy and the like, and the gland type sealing structure has the advantages that the gland is enabled to uniformly extrude graphite packing through the frequent adjustment of the paired bolts to achieve a sealing effect, so that the workload of maintenance workers can be increased, the gland is difficult to level, the powder leakage rate is high, the structure is sealed in a single layer, and the sealing effect is poor.

Disclosure of Invention

The utility model mainly solves the technical problems of leakage and the like when the rotating member in the prior art conveys powder materials, and provides a sealing structure for preventing powder leakage, which effectively prevents the rotating member from conveying the powder materials and has good sealing effect.

The present utility model provides a sealing structure for preventing powder leakage, comprising: the material end sealing shell, the compression spring, the wear-resisting plate, the first asbestos and the second asbestos;

the material end sealing shell is arranged on the shell of the rotating component; a first asbestos is arranged between the material end sealing shell and a transmission shaft in the shell; a second asbestos is arranged between the shell and the transmission shaft; a plurality of groups of compression springs are arranged between the first asbestos and the second asbestos; the second asbestos faces away from the side face of the first asbestos.

Further, a front wear-resistant component is arranged between the material end sealing shell and the transmission shaft; the front wear assembly is disposed at the front end of the first asbestos.

Further, the material end sealing shell is connected with the shell through bolts.

Further, the compression springs are two groups.

Further, the compression spring is arranged on the shell through a spring supporting seat.

Furthermore, the connecting end of the material end sealing shell and the shell is a large-diameter end.

Further, the first asbestos and the second asbestos are graphite asbestos.

Compared with the prior art, the sealing structure for preventing powder leakage has the following advantages:

1. the reverse threads are arranged in the front wear-resistant component of the sealing structure, so that 90% of powder materials can be blocked, and the powder materials in the rotating component can be prevented from leaking by extruding oil-immersed graphite asbestos in the conveying process.

2. The sealing structure of the utility model adopts double-layer oil-immersed graphite asbestos sealing, which can better prevent powder leakage.

3. The sealing structure is internally provided with the compression spring, when the sealing graphite asbestos is worn, the compression spring can uniformly release elasticity according to the wear amount and actively follow up sealing, powder leakage is prevented again, and meanwhile, the workload of maintenance personnel is reduced.

4. The utility model has the advantages of simple and reasonable sealing structure, low input cost, simple disassembly and easy maintenance.

Drawings

FIG. 1 is a schematic view of a seal structure for preventing powder leakage in accordance with the present utility model;

reference numerals: 1. a transmission shaft; 2. a front wear assembly; 3. a material end sealing shell; 4. a first asbestos; 5. a front spring support; 6. a compression spring; 7. a rear spring support; 8. a wear plate; 9. a housing; 10. and a second asbestos.

Detailed Description

In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects achieved clearer, the utility model is further described in detail below with reference to the accompanying drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present utility model are shown in the accompanying drawings.

As shown in fig. 1, a sealing structure for preventing powder leakage according to an embodiment of the present utility model includes: the material end sealing shell 3, the compression spring 6, the wear-resistant plate 8, the first asbestos 4 and the second asbestos 10;

the material end sealing shell 3 is arranged on a shell 9 of the rotating component; the material end sealing shell 3 is connected with the shell 9 through bolts; the outer diameter of the material end sealing shell 3 is a variable diameter, the end close to the front end of the transmission shaft 1 is a small diameter end, and the connecting end of the material end sealing shell 3 and the shell 9 is a large diameter end. A first asbestos 4 is arranged between the material end sealing shell 3 and the transmission shaft 1 in the shell 9; a front wear-resistant component 2 is arranged between the material end sealing shell 3 and the transmission shaft 1; the front wear assembly 2 is arranged at the front end of the first asbestos 4. A second asbestos 10 is arranged between the shell 9 and the transmission shaft 1; two groups of compression springs 6 are arranged between the first asbestos 4 and the second asbestos 10; the two groups of compression springs 6 are arranged in parallel; wherein a set of compression springs 6 close to the first asbestos 4 is arranged on a housing 9 through a front spring support 5; the other group of compression springs 6 are arranged on the shell 9 through the rear spring supporting seat 7; the side of the second asbestos 10 facing away from the first asbestos 4 is provided with a wear plate 8. The first asbestos 4 and the second asbestos 10 are oil-immersed graphite asbestos; when sealed oil immersion graphite asbestos has wearing and tearing, need not manual operation, compression spring can make preceding spring supporting seat 5, back spring supporting seat 7 initiative follow up according to wearing and tearing volume uniform release elasticity, guarantees the compactness of first asbestos 4 and preceding wear-resisting subassembly 2 and second asbestos 10 and antifriction plate 8, prevents the powder leakage once more.

The shell 9 wraps the inner member of the sealing structure, the inner member of the sealing structure is connected with the material end sealing shell 3 through bolts, and when the oil-immersed graphite asbestos is worn out, the oil-immersed graphite asbestos is convenient to detach and replace.

The working process of the sealing structure for preventing powder leakage in this embodiment is as follows: the sealing structure is generally arranged at the supporting end of a transmission shaft 1 in a rotating component (such as an impeller feeder, a screw conveyor and the like), during the process of conveying powder materials, the powder materials can sequentially contact the transmission shaft 1, a front wear-resistant component 2 and a material end sealing shell 3 and flow to oil-immersed graphite asbestos through a gap between the front wear-resistant component 2 and the material end sealing shell 3, and the oil-immersed graphite asbestos, the transmission shaft 1 and the material end sealing shell 3 are arranged by extrusion, so that all the oil-immersed graphite asbestos is sealed, and the powder materials are prevented from leaking;

the front spring supporting seat 5, the compression spring 6 and the rear spring supporting seat 7 are placed between the first asbestos 4 and the second asbestos 10, and the functions of the front spring supporting seat 5, the compression spring 6 and the rear spring supporting seat 7 are that when the first asbestos 4 and the second asbestos 10 are sealed and worn, manual operation is not needed, the compression spring can uniformly release elasticity according to the wearing capacity to enable the front spring supporting seat 5 and the rear spring supporting seat 7 to actively follow, the tightness of the first asbestos 4, the front wear-resistant component 2 and the second asbestos 10 and the wear-resistant plate 8 is guaranteed, and powder leakage is prevented again.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments is modified or some or all of the technical features are replaced equivalently, so that the essence of the corresponding technical scheme does not deviate from the scope of the technical scheme of the embodiments of the present utility model.

Claims

1. A sealing structure for preventing leakage of powder, comprising: the material end sealing shell (3), the compression spring (6), the wear-resistant plate (8), the first asbestos (4) and the second asbestos (10);

the material end sealing shell (3) is arranged on a shell (9) of the rotating component; a first asbestos (4) is arranged between the material end sealing shell (3) and the transmission shaft (1) in the shell (9); a second asbestos (10) is arranged between the shell (9) and the transmission shaft (1); a plurality of groups of compression springs (6) are arranged between the first asbestos (4) and the second asbestos (10); the second asbestos (10) is provided with a wear-resistant plate (8) on the side surface facing away from the first asbestos (4).

2. The sealing structure for preventing powder leakage according to claim 1, characterized in that a front wear-resistant component (2) is arranged between the material end sealing shell (3) and the transmission shaft (1); the front wear-resistant component (2) is arranged at the front end of the first asbestos (4).

3. The sealing structure for preventing powder leakage according to claim 1, wherein the material end sealing case (3) is connected with the housing (9) by bolts.

4. The sealing arrangement against powder leakage according to claim 1, characterized in that the compression springs (6) are in two groups.

5. A sealing arrangement for preventing powder leakage according to claim 1, characterized in that the hold-down spring (6) is arranged on the housing (9) by means of a spring support.

6. The sealing structure for preventing powder leakage according to claim 1, wherein the connecting end of the material end sealing shell (3) and the shell (9) is a large diameter end.

7. The sealing structure against powder leakage according to claim 1, characterized in that the first asbestos (4) and the second asbestos (10) are both graphite asbestos.