CN219062423U - Novel sealing structure of main shaft of large shredder - Google Patents

Abstract

The utility model discloses a novel sealing structure of a main shaft of a large shredder, which belongs to the technical field of large shreds and is used in an iron drum crushing, cleaning and recycling system, a mechanical seal is formed between the main shaft of the large shredder and a mechanical baffle, the end part of the main shaft of the shredder and the sealing end of a transmission part are sealed by a labyrinth seal to form a second seal, and a graphite packing is used as a third seal; the sealing end is provided with the O-shaped sealing ring and the lip-shaped sealing ring to form a fourth seal and a fifth seal, and the sealing structure can prevent magazines in a working area of the main shaft from entering a supporting cavity of the main shaft, can effectively place various liquid and dust materials into supporting and driving parts of the main shaft, has good sealing performance, is novel in overall structural design, and greatly prolongs the service life of a driving part of equipment.

Description

Novel sealing structure of main shaft of large shredder

Technical Field

The utility model belongs to the technical field of large-scale shredders, and particularly relates to a novel sealing structure of a main shaft of a large-scale shredder.

Background

In the iron drum crushing, cleaning and recycling system, a large shredder is required to be used for crushing and shredding the iron drum, the end connection of the main shaft of the large shredder cannot be fastened and sealed at present, and often because of dust and liquid penetrating into the transmission part, parts are damaged, transmission parts such as bearings cannot be well protected, production efficiency is affected, and maintenance cost is increased.

Therefore, the novel sealing structure of the main shaft of the large shredder, which has good sealing performance and greatly prolongs the service life of the transmission part of the equipment, is provided for solving the problems by arranging a plurality of groups of sealing structures.

Disclosure of Invention

The utility model aims to provide a novel sealing structure of a main shaft of a large shredder, so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a novel seal structure of large-scale shredder main shaft, includes main shaft and bearing frame, the main shaft rotates to be located on the bearing frame, be fixed to be equipped with on the bearing frame and cup joint the mechanical baffle at the main shaft lateral surface, welded fastening has labyrinth seal movable end cover on the main shaft, the left end of bearing frame is fixed with the labyrinth seal fixed end cover through the locating pin, the labyrinth seal fixed end covers and slides relatively and has graphite packing and graphite packing to fix on the labyrinth seal movable end cover, still install O type sealing washer and O type sealing washer tightly sticis on the bearing frame on the slot of labyrinth seal fixed end cover, install the lip seal circle in the interior of labyrinth seal fixed end cover, and the cooperation is sealed between lip seal circle's inner lip and the main shaft.

The labyrinth seal movable end cover and the labyrinth seal fixed end cover are sleeved on the outer side face of the main shaft, the labyrinth seal movable end cover and the labyrinth seal fixed end cover rotate relatively, and lubricating grease is filled between the labyrinth seal movable end cover and the labyrinth seal fixed end cover.

The O-shaped sealing ring is tightly pressed between the bearing seat and the labyrinth sealing fixed end cover.

The utility model has the technical effects and advantages that: according to the novel sealing structure of the large shredder main shaft, a mechanical seal is formed between the main shaft and the mechanical baffle, the end part of the shredder main shaft and the sealing end of the transmission part adopt labyrinth seal as a second seal, and graphite packing is adopted as a third seal; the sealing end is provided with the O-shaped sealing ring and the lip-shaped sealing ring to form a fourth seal and a fifth seal, and the sealing structure can prevent magazines in a working area of the main shaft from entering a supporting cavity of the main shaft, can effectively place various liquid and dust materials into supporting and driving parts of the main shaft, has good sealing performance, is novel in overall structural design, and greatly prolongs the service life of a driving part of equipment.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is an enlarged view of the utility model at a in fig. 1.

In the figure: 1. a main shaft; 2. a mechanical baffle; 3. a labyrinth seal movable end cover; 4. graphite packing; 5. an O-shaped sealing ring; 6. a lip seal; 7. a labyrinth seal fixed end cover; 8. and a bearing seat.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a novel sealing structure of a main shaft of a large shredder, which is shown in fig. 1-2, and comprises a main shaft 1 and a bearing seat 8, wherein the main shaft 1 is rotatably arranged on the bearing seat 8, a mechanical baffle plate 2 sleeved on the outer side surface of the main shaft 1 is fixedly arranged on the bearing seat 8, a labyrinth seal movable end cover 3 is fixedly welded on the main shaft 1, a labyrinth seal fixed end cover 7 is fixedly arranged at the left end of the bearing seat 8 through a locating pin, a graphite packing 4 relatively slides on the labyrinth seal fixed end cover 7 and is fixedly arranged on the labyrinth seal movable end cover 3, an O-shaped sealing ring 5 is also arranged on a groove of the labyrinth seal fixed end cover 7 and tightly pressed on the bearing seat 8, a lip seal ring 6 is arranged in the labyrinth seal fixed end cover 7, and the inner lip of the lip seal ring 6 is matched and sealed with the main shaft 1.

The labyrinth seal movable end cover 3 and the labyrinth seal fixed end cover 7 are sleeved on the outer side face of the main shaft 1, the labyrinth seal movable end cover 3 and the labyrinth seal fixed end cover 7 rotate relatively, and lubricating grease is filled between the labyrinth seal movable end cover 3 and the labyrinth seal fixed end cover 7.

The O-shaped sealing ring 5 is tightly pressed between the bearing seat 8 and the labyrinth seal fixing end cover 7.

This novel seal structure of large-scale shredder main shaft, the working area of main shaft 1 has various rubbish, waste liquid, dust etc. labyrinth seal activity end cover 3 passes through welded fastening on main shaft 1, mechanical baffle 2 is fixed on bearing frame 8, labyrinth seal fixes end cover 7 and passes through the locating pin to be fixed on bearing frame 8, graphite packing 4 is fixed on labyrinth seal activity end cover 3 and rotates simultaneously with labyrinth seal activity end cover 3 and slides relatively between the labyrinth seal fixes end cover 7, O type sealing washer 5 is installed on the slot of labyrinth seal fixing end cover 7, and tightly press on bearing frame 8, make the stroke between labyrinth seal fixing end cover 7 and the bearing frame 8 together effectual seal, lip seal 6 is installed on labyrinth seal fixing end cover 7, the cooperation between lip seal 6 inner lip and main shaft 1 forms a seal.

The entire seal structure has five seals, wherein:

and (3) sealing: a mechanical seal is formed between the main shaft 1 and the mechanical baffle 2, and larger materials are blocked by the mechanical baffle 2 and cannot enter the right area of the mechanical baffle 2;

and (3) secondary sealing: the labyrinth seal movable end cover 3 and the labyrinth seal fixed end cover 7 rotate relatively, lubricating grease is filled between the labyrinth seal movable end cover 3 and the labyrinth seal fixed end cover 7, and effective labyrinth seal is formed by grooves between the labyrinth seal movable end cover 3 and the labyrinth seal fixed end cover 7;

three seals: the graphite packing 4 and the labyrinth seal fixed end cover 7 are tightly pressed and relatively slide to form an effective packing seal;

four seals: the lip-shaped sealing ring 6 is matched with the main shaft 1 to form a seal;

five seals: the O-shaped sealing ring 5 is tightly pressed between the labyrinth sealing fixed end cover 7 and the bearing seat 8 to form a seal;

through the five seals, magazines in the working area of the main shaft 1 can be prevented from entering the supporting cavity of the main shaft 1, various liquid and dust materials can be effectively placed into the supporting and driving parts of the main shaft 1, and the service life of the main shaft 1 is effectively prolonged.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (3)

1. The utility model provides a novel seal structure of large-scale shredder main shaft, includes main shaft (1) and bearing frame (8), its characterized in that: the novel labyrinth seal structure is characterized in that the main shaft (1) is rotationally arranged on the bearing seat (8), the bearing seat (8) is fixedly provided with a mechanical baffle (2) sleeved on the outer side face of the main shaft (1), the main shaft (1) is fixedly provided with a labyrinth seal movable end cover (3) in a welded mode, the left end of the bearing seat (8) is fixedly provided with a labyrinth seal fixed end cover (7) through a locating pin, graphite packing (4) and the graphite packing (4) are relatively slid on the labyrinth seal fixed end cover (7) to be fixed on the labyrinth seal movable end cover (3), an O-shaped sealing ring (5) and an O-shaped sealing ring (5) are further installed on a groove of the labyrinth seal fixed end cover (7) to be tightly pressed on the bearing seat (8), a lip seal ring (6) is installed in the labyrinth seal fixed end cover (7), and the inner lip of the lip seal ring (6) is matched and sealed with the main shaft (1).

2. The novel sealing structure of a main shaft of a large shredder according to claim 1, wherein: the labyrinth seal movable end cover (3) and the labyrinth seal fixed end cover (7) are sleeved on the outer side face of the main shaft (1), the labyrinth seal movable end cover (3) and the labyrinth seal fixed end cover (7) rotate relatively, and lubricating grease is filled between the labyrinth seal movable end cover (3) and the labyrinth seal fixed end cover (7).

3. The novel sealing structure of a main shaft of a large shredder according to claim 1, wherein: the O-shaped sealing ring (5) is tightly pressed between the bearing seat (8) and the labyrinth sealing fixed end cover (7).

Images