CN-224208088-U - Coal smashing device for thermal power plant

CN224208088UCN 224208088 UCN224208088 UCN 224208088UCN-224208088-U

Abstract

The utility model discloses a coal pulverizing device of a thermal power plant, which relates to the technical field of thermal power plants and comprises a pulverizing box, a feeding hopper, a material dividing box, a rotating block and a material guiding opening, wherein the feeding hopper is positioned above the pulverizing box and is used for feeding, two sides of an opening at the bottom of the feeding hopper are provided with inclined planes, the material dividing box is communicated with the feeding hopper, two sides of the material dividing box are provided with side openings, the rotating block is rotatably arranged in the material dividing box and is attached to the inner wall of the material dividing box, the side surface of the rotating block is provided with the material guiding opening and is used for equally conveying materials to the pulverizing box at equal intervals, when the rotating block is rotated at equal intervals, the top end of a bent rod is synchronously and vertically knocked on the inclined plane at the opening at the bottom of the feeding hopper at equal intervals, and the knocking is perpendicular to the inclined plane, so that energy loss can be reduced, and coal in the feeding hopper can be promoted to smoothly fall, and the pulverizing efficiency can be accelerated.

Inventors

REN FEI
DING YONG
CHEN XIUDONG
LI YONGFENG
LIU XIAOJUN

Assignees

江苏阚山发电有限公司

Dates

Publication Date: 20260508
Application Date: 20250528

Claims (5)

1. A coal pulverizing device for a thermal power plant, comprising: A crushing box (1); the feed hopper (2) is positioned above the crushing box (1) and is used for feeding, and two sides of the bottom opening are provided with inclined planes; The material dividing box (3) is communicated with the feed hopper (2) and the crushing box (1), and side openings (31) are formed in two sides of the material dividing box (3); the rotating block (4) is rotatably arranged in the material dividing box (3) and is adhered to the inner wall of the material dividing box (3), and a material guide opening (41) is formed in the side surface of the rotating block (4) and is used for equally conveying materials to the crushing box (1) at equal intervals; The bent rod (5) rotates to be arranged on the outer side of the material distribution box (3), a first arc-shaped part (51) and a second arc-shaped part (52) are respectively arranged below and above a rotating point, the gravity center of the bent rod (5) is located on one side, away from the material distribution box (3), of the rotating point, the convex surface of the first arc-shaped part (51) is inserted into the side opening (31), the concave surface of the second arc-shaped part (52) faces the feeding hopper (2), and when the rotating block (4) rotates to extrude the first arc-shaped part (51) at intervals, the top end of the bent rod (5) is synchronously vertically knocked on an inclined surface at the opening of the bottom of the feeding hopper (2) at intervals.
2. The coal pulverizer of a thermal power plant according to claim 1, wherein the top of the bent rod (5) is fixedly sleeved with an elastic block (53), and the width of the elastic block (53) is larger than that of the second arc-shaped part (52) and smaller than that of the feed hopper (2).
3. A coal pulverizing apparatus for a thermal power plant according to claim 2, wherein the material guiding port (41) is provided in a fan-ring shape, and the bottom opening of the feed hopper (2) is smaller than the port width of the material guiding port (41).
4. A coal pulverizing apparatus for a thermal power plant according to claim 3, wherein the two material guiding ports (41) are symmetrically arranged, and the sector angle corresponding to the material guiding ports (41) is 90 degrees.
5. The coal pulverizer of a thermal power plant according to claim 4, wherein the pulverizing box (1) is internally provided with pulverizing rollers which synchronously rotate in a matched manner to pulverize coal, the pulverizing rollers are positioned below the opening at the bottom of the material separating box (3), and the rotating block (4) synchronously rotates with the pulverizing rollers.

Description

Coal smashing device for thermal power plant Technical Field The utility model relates to the technical field of thermal power generation, in particular to a coal pulverizing device of a thermal power plant. Background In a thermal power plant, coal is used as a main fuel, and the crushing degree directly influences the combustion efficiency and the power generation quality. At present, the existing coal crushing device is easy to accumulate coal in a feeding hopper in the feeding process, cannot fall down smoothly, and influences the feeding efficiency. Accordingly, a coal pulverizing apparatus for a thermal power plant is provided by those skilled in the art to solve the proposed problems. Disclosure of utility model In order to solve the problems, the utility model provides a coal pulverizing device of a thermal power plant. In order to achieve the above object, the technical scheme of the present utility model is as follows: a coal pulverizer for a thermal power plant, comprising: a crushing box; the feeding hopper is positioned above the crushing box and used for feeding, and two sides of the opening at the bottom are provided with inclined planes; A material dividing box which is communicated with the feed hopper and the crushing box, wherein side openings are formed in two sides of the material dividing box; The rotating block is rotatably arranged in the material dividing box and is adhered to the inner wall of the material dividing box, and a material guide opening is formed in the side surface of the rotating block and is used for equally conveying materials to the crushing box at equal intervals; The bent rod rotates to be arranged on the outer side of the material distribution box, a first arc-shaped part and a second arc-shaped part are respectively arranged below and above a rotating point, the gravity center of the bent rod is located on one side, away from the material distribution box, of the rotating point, the convex surface of the first arc-shaped part is inserted into the side opening, the concave surface of the second arc-shaped part faces the feeding hopper, and when the rotating block rotates to extrude the first arc-shaped part at intervals, the top end of the bent rod is synchronously and vertically knocked on the inclined surface of the opening of the bottom of the feeding hopper at intervals. Preferably, the top of the bent rod is fixedly sleeved with an elastic block, and the width of the elastic block is larger than that of the second arc-shaped part and smaller than that of the feeding hopper. Preferably, the material guiding opening is in a fan ring shape, and the opening at the bottom of the feeding hopper is smaller than the opening width of the material guiding opening. Preferably, the two material guiding openings are symmetrically arranged, and the sector angle corresponding to the material guiding openings is 90 degrees. Preferably, the crushing box is internally provided with a crushing roller which synchronously cooperates with the rotation to crush the coal blocks, the crushing roller is positioned below the opening at the bottom of the material distributing box, and the rotating block synchronously rotates with the crushing roller. In summary, the utility model has the following beneficial technical effects: when the rotating block rotates to extrude the first arc-shaped part at intervals, the top end of the bent rod is synchronously and vertically knocked on the inclined plane at the opening of the bottom of the feeding hopper at intervals, and the energy loss can be reduced by knocking the inclined plane vertically, so that coal in the feeding hopper is promoted to smoothly fall, and the crushing efficiency can be accelerated. Drawings The disclosure of the present utility model is described with reference to the accompanying drawings. It should be understood that the drawings are for purposes of illustration only and are not intended to limit the scope of the present utility model in which like reference numerals are used to designate like parts. Wherein: FIG. 1 is a schematic view of the overall structure of the present utility model; FIG. 2 is a schematic elevational cross-sectional view of the present utility model; FIG. 3 is a schematic illustration of the present utility model the bent rod is schematically shown. The reference numerals indicate that 1, a crushing box, 2, a feed hopper, 3, a material dividing box, 4, a rotating block, 5, a bent rod, 31, a side opening, 41, a material guiding opening, 51, a first arc-shaped part, 52, a second arc-shaped part, 53 and an elastic block. Detailed Description It is to be understood that, according to the technical solution of the present utility model, those skilled in the art may propose various alternative structural modes and implementation modes without changing the true spirit of the present utility model. Accordingly, the following detailed description and drawings are merely illustrative of the utility model