CN212048848U

CN212048848U - Dredging system of boiler coal scuttle

Info

Publication number: CN212048848U
Application number: CN202020078223.0U
Authority: CN
Inventors: 何进东
Original assignee: Jiangxi Jinghao Salt Chemical Co ltd
Current assignee: Jiangxi Jinghao Salt Chemical Co ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-12-01
Anticipated expiration: 2030-01-14

Abstract

The utility model discloses a dredging system of a boiler coal hopper, which comprises a hopper device, a stirring device and an air hammer device; the hopper device comprises an upper hopper, a lower hopper communicated and matched with the lower end of the upper hopper, and a discharge hole communicated with the top of the lower hopper; the hopper device is provided with a stirring device for stirring raw materials in the hopper, and the outer surface of the discharge port is provided with an air hammer device for knocking and vibrating the raw materials in the discharge port. Through setting up the air hammer in original coal scuttle below discharge gate department and be used for shaking the basis of raw materials, top at the coal scuttle sets up mixing system, make mixing system stir the coal cinder of the discharge gate department top of coal scuttle, reduce the phenomenon that the coal scuttle appears the knot and encircles, and the air hammer of coal scuttle below discharge gate department setting can shake the intraoral coal cinder of discharge gate, it is more unobstructed when falling from the discharge gate to make the coal cinder, thereby reduce the frequency of the trouble of disconnected coal appears in the coal scuttle unloading, reduce workman's intensity of labour.

Description

Dredging system of boiler coal scuttle

Technical Field

The utility model relates to a dredging system field especially relates to a dredging system of boiler coal scuttle.

Background

At present, various thermal power plants, coal storage and transportation and metallurgical plants often relate to the use of coal mines, coal blocks in a coal hopper always have the problem of arching when a coal outlet is formed, the arching needs to be manually knocked and dredged later, frequent coal breakage influences stable operation of a boiler, the boiler is in a severe condition or even can be flamed out, and along with the longer arching time, the higher the firmness of the arching is, the more manual and timely arching treatment is needed, so that the labor intensity of personnel is increased, and the arching post-treatment is very difficult.

SUMMERY OF THE UTILITY MODEL

In order to overcome the easy knot defect of encircleing of coal scuttle blanking among the prior art, the utility model aims to solve the problem that provides a dredging system of boiler coal scuttle for coal cinder in the coal scuttle can solve the knot when the coal scuttle unloading through vibrations and rotation when the blanking and encircle the problem, thereby reduce the frequency of the trouble of coal breakage appears in the coal scuttle unloading, reduce on-the-spot workman's intensity of labour.

To achieve the purpose, the utility model adopts the following technical proposal:

a dredging system of a boiler coal hopper comprises a hopper device, a stirring device and an air hammer device;

the hopper device comprises an upper hopper positioned at the top, a lower hopper communicated and matched with the lower end of the upper hopper, and a discharge hole communicated with the bottom of the lower hopper;

the hopper device is provided with a stirring device for stirring the raw materials in the discharge hopper, and the outer surface of the discharge port is provided with an air hammer device for vibrating the raw materials in the discharge port.

Preferably, the stirring device comprises a motor, a speed reducer and a stirring part;

the motor is arranged above the center of the feeding hopper, an output shaft of the motor is parallel to and downward from the axis of the discharging hopper, one end of the speed reducing device is connected with the output shaft of the motor, and the other end of the speed reducing device is connected with the stirring part.

Preferably, the stirring part comprises a rotating shaft and a stirring blade;

the one end of pivot with decelerator is connected, the other end of pivot with stirring vane is connected, stirring vane is the isosceles trapezoid's that the appearance from top to bottom gradually diminishes flat board, the pivot is connected in trapezoidal stirring vane's symmetry axis is epaxial.

Preferably, two trapezoidal waists of the stirring blade are respectively parallel to a generatrix of the conical blanking hopper.

Preferably, the air hammer device comprises more than two air hammers, and the air hammers are uniformly arranged on the outer surface of the discharge hole through a metal frame.

Preferably, the upper hopper is a cylindrical shell or a cuboid shell, and the lower hopper is a conical shell with a downward vertex.

The utility model has the advantages that:

the utility model provides a pair of dredging system of boiler coal scuttle, through setting up the basis that the air hammer is used for vibrations raw materials in original coal scuttle below discharge gate department, set up mixing system in the top of coal scuttle, stir the coal cinder of the discharge gate department top of coal scuttle through mixing system, reduce the coal scuttle and appear the phenomenon of arching, and the air hammer of coal scuttle below discharge gate department setting can shake the intraoral coal cinder of discharge, it is more unobstructed when falling down from the discharge gate to make the coal cinder, thereby reduce the frequency that the disconnected coal trouble appears in the coal scuttle unloading by a wide margin, reduce workman's intensity of labour.

Drawings

FIG. 1 is a schematic structural diagram of a dredging system of a coal hopper of a boiler;

in the figure:

1. a hopper device; 2. a stirring device; 3. an air hammer device; 11. feeding a hopper; 12. feeding a hopper; 13. A discharge port; 21. a motor; 22. a reduction gear; 23. a stirring section; 231. a rotating shaft; 232. a stirring blade.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1, the dredging system for a boiler coal hopper provided in this embodiment includes a hopper device 1, a stirring device 2, and an air hammer device 3; the hopper device 1 comprises an upper hopper 11 positioned at the top, a lower hopper 12 communicated and matched with the lower end of the upper hopper 11, and a discharge hole 13 communicated with the bottom of the lower hopper 12; the hopper device 1 is provided with a stirring device 2 for stirring the raw materials in the lower hopper 12, and the outer surface of the discharge port 13 is provided with an air hammer device 3 for vibrating the raw materials in the discharge port 13. Because the coal cinder is anomalous shape by itself, easy because the interact between the coal cinder when the discharge gate 13 ejection of compact via the hopper, the phenomenon of arching appears in the less discharge gate 13 department of passageway, and prevent the coal cinder to pass through discharge gate 13, and adopt agitating unit 2 to stir the coal cinder in hopper 12 under the discharge gate 13 top in this embodiment, destroy the balance of putting up between the coal cinder, make the coal cinder be difficult to appear the phenomenon of arching at discharge gate 13, and set up the air hammer on discharge gate 13 surface through the physical beat discharge gate 13 surface, make the coal cinder that is in discharge gate 13 receive its vibrations, further prevent that the coal cinder from arching and breaking the coal in discharge gate 13 department, improve the unobstructed of coal cinder circulation.

In order to change the stirring speed according to the coal block arching frequency of different situations, the stirring device 2 further comprises a motor 21, a speed reducing device 22 and a stirring part 23; the motor 21 is arranged above the center of the upper hopper 11, an output shaft of the motor 21 is parallel to and downward from the axis of the lower hopper 12, one end of the speed reducing device 22 is connected with the output shaft of the motor 21, and the other end of the speed reducing device 22 is connected with the stirring part 23. When the number of impurities and viscous substances in the coal briquette is large, the coal briquette is easy to form an arch formation phenomenon on the discharge port 13, and therefore, the stirring speed of the stirring part 23 can be increased only by properly increasing the rotating speed of the motor 21, so that the occurrence frequency of the arch formation can be greatly reduced.

In order to enable the stirring effect of the stirring part 23 to better act on the coal blocks close to the upper part of the hopper discharge port 13, further, the stirring part 23 comprises a rotating shaft 231 and stirring blades 232; one end of the rotating shaft 231 is connected with the speed reducer 22, the other end of the rotating shaft 231 is connected with the stirring blade 232, the stirring blade 232 is an isosceles trapezoid flat plate with the shape gradually reduced from top to bottom, and the rotating shaft 231 is connected to the symmetry axis of the trapezoid stirring blade 232. Due to the arrangement, the stirring blades 232 can be close to the discharge port 13 as much as possible on the basis of high stirring efficiency, so that coal blocks with the tendency of arching can be directly stirred, and the effect of reducing the frequency of arching of the stirring part 23 is improved. Further, both sides of the trapezoid of the stirring blade 232 may be disposed in parallel with the generatrix of the conical hopper 12. This allows the stirring blade 232 to move downward to the maximum extent and stir the coal lumps at the bottom of the hopper 12 to the maximum extent.

In order to further enhance the vibration effect of the air hammers in the whole system and enable the surface of the discharge port 13 to be relatively uniformly stressed by the air hammers, further, the air hammer device 3 comprises more than two air hammers which are uniformly arranged on the outer surface of the discharge port 13 through a metal frame. Through a plurality of air hammers that evenly set up in discharge gate 13 surface, can make discharge gate 13 receive the vibrations of a plurality of different angles to reduce discharge gate 13 and appear the frequency of arching, simultaneously, because the evenly distributed of air hammer can also make the hammering power that discharge gate 13 received compare in even, improve entire system's life.

In order to make the hopper device 1 capable of containing more coal blocks and discharging more smoothly, the upper hopper 11 is a cylindrical shell or a rectangular shell, and the lower hopper 12 is a conical shell with the downward vertex. The feeding hopper 11 is designed into a cylindrical shell or a cuboid shell, so that the coal raw material can be contained in the feeding hopper while the workshop space is saved, the feeding hopper is convenient to be connected with the feeding hopper 12 in a matching way, and the feeding hopper 12 adopts a conical shell with the downward vertex to enable the coal raw material to spontaneously slide to the bottom of the feeding hopper 12 and enter the discharging port 13 under the action of gravity.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. The utility model provides a dredging system of boiler coal scuttle which characterized in that:

comprises a hopper device (1), a stirring device (2) and an air hammer device (3);

the hopper device (1) comprises an upper hopper (11) positioned at the top, a lower hopper (12) communicated and matched with the lower end of the upper hopper (11), and a discharge hole (13) communicated with the bottom of the lower hopper (12);

the stirring device (2) used for stirring the raw materials in the lower hopper (12) is arranged on the hopper device (1), and the air hammer device (3) used for vibrating the raw materials in the discharge hole (13) is arranged on the outer surface of the discharge hole (13).

2. The dredging system for the coal hopper of the boiler, according to claim 1, wherein:

the stirring device (2) comprises a motor (21), a speed reducer (22) and a stirring part (23);

the motor (21) is arranged above the center of the feeding hopper (11), an output shaft of the motor (21) is parallel to and downward from the axis of the discharging hopper (12), one end of the speed reducing device (22) is connected with the output shaft of the motor (21), and the other end of the speed reducing device (22) is connected with the stirring part (23).

3. The dredging system for the coal hopper of the boiler, according to claim 2, wherein:

the stirring part (23) comprises a rotating shaft (231) and a stirring blade (232);

the one end of pivot (231) with decelerator (22) are connected, the other end of pivot (231) with stirring vane (232) are connected, stirring vane (232) are the isosceles trapezoid's that the appearance gradually diminishes from top to bottom flat board, pivot (231) are connected in trapezoidal stirring vane (232) on the symmetry axis.

4. The dredging system for the coal bucket of the boiler as claimed in claim 3, wherein:

the two trapezoidal waists of the stirring blade (232) are respectively parallel to the generatrix of the conical blanking hopper (12).

5. The dredging system for the coal hopper of the boiler, according to claim 1, wherein:

the air hammer device (3) comprises more than two air hammers which are uniformly arranged on the outer surface of the discharge hole (13) through a metal frame.

6. The dredging system for the coal hopper of the boiler, according to claim 1, wherein:

the feeding hopper (11) is a cylindrical shell or a cuboid shell, and the discharging hopper (12) is a conical shell with the vertex downward.