CN219377328U

CN219377328U - Bipolar crusher for coal crushing

Info

Publication number: CN219377328U
Application number: CN202320877763.9U
Authority: CN
Inventors: 杜江伟; 陈正兴; 吕永亮; 郑晓旭; 李旭阳; 赵岩; 韩鹏
Original assignee: Anyang City Xinda Automation Science And Technology Co ltd
Current assignee: Anyang City Xinda Automation Science And Technology Co ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-07-21
Anticipated expiration: 2033-04-19

Abstract

The utility model provides a bipolar breaker for coal pulverizer, includes two crushing chambeies, and every crushing intracavity installs one set crushing rotor, and every crushing rotor passes through a motor drive, smashes fixedly mounted on the intracavity wall and has the welt, the welt adopt polymer polyethylene welt, offered the parallel recess of multichannel on the welt surface that the rotor is radial to face relatively, the recess length direction on the welt on the vertical face of crushing chamber is the upper and lower direction, the recess direction on the welt on the arc face of crushing chamber is followed the arcwall face direction, the welt is run through at the both ends of recess. The lining board of the structure has good wear-resisting effect and long service life.

Description

Bipolar crusher for coal crushing

Technical Field

The utility model relates to a pulverizer, in particular to a bipolar crusher for coal pulverizing, and belongs to the technical field of coal pulverizing equipment.

Background

In the thermal power plant using coal as fuel, the bipolar crusher is used for crushing coal to a set granularity, two sets of rotors are arranged on the bipolar crusher, a filter screen is not used, coal can be crushed to meet the requirement through two-stage crushing, the problem of blockage basically does not exist because the crusher does not use the filter screen, the structure of the prior bipolar crusher is very suitable for crushing coal with higher moisture content, the two rotors are respectively rotatably arranged in two crushing cavities, the two rotors are respectively driven by a motor, a lining plate made of cast iron is fixedly arranged on the wall of the crushing cavity, the lining plate is matched with the shape of the inner wall of the crushing cavity, the entering material is crushed by collision between a hammer head on the rotor, collision between the lining plate and the material, and collision between the material and the rotor, and the lining plate is basically not blocked, the lining plate is also a loss piece in the bipolar crusher like the hammer head in the crushing process, the lining plate needs to be replaced after a period of time, particularly the lining plate (the upper side and the lower side surface on the rotor shaft is more seriously worn and the two side surfaces on the side surface on the side of the bipolar crusher are required to be replaced, the two side surfaces on the flange is more seriously worn and the flange is required to be replaced, the two side is required to be more severely worn and more severely and more difficult to be replaced, the wear is prolonged, and the service life is required to be more severely more difficult to be replaced, and the service is required to be more difficult to be more worn and more is more required to be replaced.

Disclosure of Invention

The present utility model has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present utility model is to provide a bipolar crusher for coal pulverizing.

In order to achieve the purpose of the utility model, the following technical scheme is adopted: the utility model provides a bipolar breaker for coal pulverizer, includes two crushing chambeies, and every crushing intracavity installs one set crushing rotor, and every crushing rotor passes through a motor drive, smashes fixedly mounted on the intracavity wall and has the welt, the welt adopt polymer polyethylene welt, offered the parallel recess of multichannel on the welt surface that the rotor is radial to face relatively, the recess length direction on the welt on the vertical face of crushing chamber is the upper and lower direction, the recess direction on the welt on the arc face of crushing chamber is followed the arcwall face direction, the welt is run through at the both ends of recess.

Further; the walls on two sides of the groove are provided with notches, and the walls on two sides of the groove are discontinuous.

Further; the wall thickness of the side wall of the groove is less than or equal to 0.6cm.

Further; the width of the groove on the lining plate corresponding to the upper rotor is larger than that of the groove on the lining plate corresponding to the lower rotor, and the width of the groove on the lining plate corresponding to the upper rotor is 4-6 times of the target granularity; the width of the groove on the lining plate corresponding to the lower rotor is 2-3 times of the target granularity.

The utility model has the positive and beneficial technical effects that: the lining board of the structure has good wear-resisting effect and long service life, and is specifically explained by combining specific embodiments.

Drawings

Fig. 1 is a schematic view of a bipolar pulverizer.

Figure 2 is a schematic cross-sectional view of the liner along the width of the groove.

Fig. 3 is a schematic top view of the liner with the groove facing upward.

Detailed Description

In order to more fully explain the practice of the utility model, examples of the practice of the utility model are provided. These examples are merely illustrative of the present utility model and do not limit the scope of the utility model.

The utility model will be explained in further detail with reference to the accompanying drawings, in which: 1: a feed inlet; 2: a crushing cavity at the upper part; 3: a crushing cavity at the lower part; 4: an upper rotor; 5: a rotor at the lower part; 6: a rotor driving motor at the upper part; 7: a rotor driving motor at the lower part; 8: a lining plate; 801: a groove; 802: and (5) a notch.

As shown in the drawing, the double-pole crusher for coal crushing comprises two crushing cavities, wherein the two crushing cavities are respectively an upper crushing cavity 2 and a lower crushing cavity 3, a set of crushing rotors are arranged in each crushing cavity, an upper rotor 4 is arranged in the upper crushing cavity, a lower rotor 5 is arranged in the lower crushing cavity, the upper rotor 4 is driven by an upper rotor driving motor 6, the lower rotor is driven by a lower rotor driving motor 7, a lining plate 8 is fixedly arranged on the inner wall of the crushing cavity, the lining plate adopts a high polymer polyethylene lining plate, a plurality of parallel grooves 801 are formed on the surfaces of the lining plates opposite to each other in the radial direction of the rotor, the length direction of the grooves on the lining plates on the vertical surfaces of the crushing cavities are in the up-down direction, the directions of the grooves on the arc surfaces of the lining plates on the crushing cavities are along the direction of the arc surfaces, the two ends of the grooves penetrate through the lining plates, the wall thickness of the side wall of the groove is less than or equal to 0.6cm, the wall of the groove is clamped in the groove when the coal particles are crushed, the walls on the two sides of the groove are provided with notches 801, the walls on the two sides of the groove are discontinuous, the side wall of the groove formed by the macromolecular polyethylene plate is thinner, the notches 801 exist, the walls on the two sides of the groove are elastic to form an elastic clamping groove, the irregularly-shaped coal particles with corresponding size can be clamped in the groove when being crushed by impact, the coal particles are clamped in the groove, the exposed part of the coal particles form the protection of the lining plate due to shallower grooves (generally about 5 mm), the impact among the coal particles is mainly generated in the crushing process, the lining plate is protected from abrasion, the coal in the groove can be crushed in the impact process, the crushed particles can flow out of the groove in the direction of the groove, the vacant position can be filled by the coal particles, thus, the number of times of impact on the lining plate is reduced, and the service life of the lining plate is prolonged.

Optimally, the width of the groove on the lining plate corresponding to the upper rotor is larger than that of the groove on the lining plate corresponding to the lower rotor, and the width of the groove on the lining plate corresponding to the upper rotor is 4-6 times of the target granularity; the width of the groove on the lining plate corresponding to the lower rotor is 2-3 times of the target granularity. The groove width can be set according to the target granularity, the lining plate corresponding to the upper rotor refers to the part above the circular bottom corresponding to the arc-shaped cavity at the upper part, and the other lining plates corresponding to the lower rotor.

Having described embodiments of the present utility model in detail, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the scope and spirit of the utility model as defined in the appended claims, and any simple, equivalent changes and modifications to the above examples are intended to be within the scope of the present utility model and the utility model is not limited to the embodiments as set forth in the specification.

Claims

1. The utility model provides a bipolar breaker for coal pulverizer, includes two crushing chambeies, and every crushing intracavity installs one set crushing rotor, and every crushing rotor is through a motor drive, and fixed mounting has the welt on the crushing intracavity wall, its characterized in that: the lining board adopts a high polymer polyethylene lining board, a plurality of parallel grooves are formed in the surface of the lining board opposite to the radial direction of the rotor, the length direction of the grooves on the lining board on the vertical surface of the crushing cavity is the up-down direction, the direction of the grooves on the lining board on the arc surface of the crushing cavity is along the direction of the arc surface, and two ends of the grooves penetrate through the lining board.

2. A bipolar crusher for coal crushing as claimed in claim 1, wherein: the walls on two sides of the groove are provided with notches, and the walls on two sides of the groove are discontinuous.

3. A bipolar crusher for coal crushing as claimed in claim 1, wherein: the wall thickness of the side wall of the groove is less than or equal to 0.6cm.

4. A bipolar crusher for coal crushing as claimed in claim 1, wherein: the width of the groove on the lining plate corresponding to the upper rotor is larger than that of the groove on the lining plate corresponding to the lower rotor, and the width of the groove on the lining plate corresponding to the upper rotor is 4-6 times of the target granularity; the width of the groove on the lining plate corresponding to the lower rotor is 2-3 times of the target granularity.