CN212375224U

CN212375224U - Emergency stop device for searching falling articles of large-sized pulverizer during working

Info

Publication number: CN212375224U
Application number: CN202021639966.7U
Authority: CN
Inventors: 魏欣
Original assignee: Baotou Iron and Steel Group Co Ltd
Current assignee: Baotou Iron and Steel Group Co Ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-01-19
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses an emergency stop device for searching articles dropped during the work of a large-scale crusher, which comprises an operation table arranged in an operation room, wherein the operation table comprises a controller, and the controller is electrically connected with each driving device of the crusher and used for controlling the working state of the crusher; the controller of the operating platform is also electrically connected with an emergency stop button arranged on the operating platform, and the emergency stop button is used for emergently stopping the working state of the first main belt conveyor at the downstream of the crusher in an emergency stop state. The problem of current industry when handling this kind of problem current practice reliability is extremely poor is solved. The probability that the dropped hammer head and the dropped hammer handle are found before entering the coal tower is greatly improved, blockage and damage to a spiral feeder and a dry quenching rotary sealing valve of a coke oven vehicle are avoided, the production continuity is ensured, and serious damage to equipment is reduced.

Description

Emergency stop device for searching falling articles of large-sized pulverizer during working

Technical Field

The utility model relates to a large-scale bulk material crushing processing and transportation trade upper and lower reaches belt process interlocking control technical field especially relates to a seek scram device that large-scale rubbing crusher during operation dropped article.

Background

In the coking industry, the mixed coal needs to be crushed and refined before entering the coke oven, so a large-scale crusher needs to be used for crushing the mixed coal. The processing capacity of a single large-scale pulverizer which is widely used at the present stage is generally 500t/h, the rotating speed is 980r/min, and two functions and one standby function are realized during production, namely two large-scale pulverizers run simultaneously and one standby function is realized. According to different requirements on fineness of the mixed coal, the number of matched hammers and hammer cakes of each pulverizer is slightly different, the number of the matched hammers and hammer cakes is generally 58 groups of heavy hammers and hammer cakes, the heavy hammers and the hammer cakes are evenly distributed on a rotor in a cover, and the total weight of each group of hammers and hammer cakes is about 30 kilograms. When the crusher operates, the 10 KV high-voltage motor drives the inner rotor of the cover to rotate at a high speed, and coal and the hammer head are continuously collided and beaten in the cover, so that the purpose of crushing and refining is achieved. Before the coal materials enter the crusher, a coal conveying belt corresponding to the crusher is matched at the upstream of each large crusher, the conveying capacity of the belt conveyor is 500t/h, and the belt speed is 1.6 m/s; the coal materials after being pulverized by the high-speed rotation of the two pulverizers are gathered on a first main belt below a discharge port of the pulverizer, and are sequentially sent to a coal tower through all the main belt procedures at the downstream for being used by a coke oven. The conveying capacity of the downstream main belt conveyor is 1000t/h, and the belt speed is 2.5 m/s.

The single coal used has raw coal which is not washed, so that the mixed coal is often accompanied with large-block-diameter and high-hardness gangue and ironware which are mixed during mining and transportation, when the coal material mixed with the gangue and the ironware passes through a pulverizer, the hammer heads and hammer cakes rotating at high speed can be damaged, and different numbers of hammer heads or hammer cakes can fall off from the rotor and fall onto a main belt below according to different damage degrees.

At present, the current operation method for handling such problems in the industry is that when an employee who attends a post of the crusher judges that a hammer head or a hammer cake falls, the employee contacts a central control room through communication tools such as an interphone and a telephone to stop the operation of a material line of a downstream belt conveyor, and simultaneously, the employee rapidly runs to the tail of the downstream belt conveyor below the crusher from an operation room to pull and stop an accident pull rope. However, the operation method has extremely poor reliability and extremely low probability of finding the falling hammer head and hammer handle, and after a post worker correctly judges an accident, the hammer head or hammer cake enters a coal tower along with a belt system running at a high speed due to various delay defects of waiting, confirming and operation of the operation method, so that the probability of finding the hammer head or hammer cake on a downstream belt is greatly reduced. Finally, the hammer head or the hammer cake can cause blockage, blockage and damage to a coke oven vehicle spiral feeder and a dry quenching rotary sealing valve in the subsequent production operation, so that the continuous production is interrupted and the equipment is seriously damaged. Because the hammer head and the hammer cake are made of alloy materials and are wrapped in a thick coal flow layer after falling to run at high speed, the method for arranging the iron remover on the belt at the lower part of the crusher in the actual production cannot effectively solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a seek scram device of large-scale rubbing crusher during operation article that drop, solve because of heavy tup, the hammer handle that drops cause jam, block, damage to coke oven vehicle screw feeder and dry coke quenching rotary seal valve in subsequent production operation, make continuous production interrupt and cause serious damage to above-mentioned equipment.

In order to solve the technical problem, the utility model adopts the following technical scheme:

an emergency stop device for searching dropped articles when a large-sized pulverizer works comprises an operation table arranged in an operation room, wherein the operation table comprises a controller, and the controller is electrically connected with each driving device of the pulverizer and used for controlling the working state of the pulverizer; the controller of the operating platform is also electrically connected with an emergency stop button arranged on the operating platform, and the emergency stop button is used for emergently stopping the working state of the first main belt conveyor at the downstream of the crusher in an emergency stop state.

Furthermore, the first main belt conveyor at the downstream of the crusher and all other main belt processes at the downstream of the crusher are electrically connected with the controller of the operation table to be controlled in an interlocking manner.

Furthermore, the emergency stop button is arranged on a central control screen and is a virtual button.

Further, the emergency stop button is bright red.

Furthermore, the emergency stop button is semicircular, and the pressing diameter of the emergency stop button is not less than 3 cm.

Further, the pressing diameter is 3-5 cm.

An emergency stop method comprising:

1) the method comprises the following steps that a belt conveyor emergency stop button is arranged on an operation table of a crusher post operation room, and the emergency stop button is used for emergently stopping a first main belt conveyor at the lower part of a crusher in an emergency stop state;

2) all the main belt processes at the downstream of the crusher are in an interlocking control state, and when a first main belt at the downstream of the crusher is stopped emergently, all the belt conveyors at the downstream of the belt to the coal tower stop running simultaneously;

3) after finding out the dropped articles, the 'emergency stop button' of the operating platform is rotated, the system is recovered to the normal interlocking working state, and the production operation is continued.

Further, the article comprises a hammer head or a hammer cake.

Furthermore, when abnormal sound and vibration happen in the running process of the crusher, post personnel judge that the article falls behind at the first time and slap the 'scram button' on the stop operating platform to trigger the belt conveyor to scram so as to lead the first main belt at the lower part of the crusher to stop emergently.

Compared with the prior art, the utility model discloses a beneficial technological effect:

(1) the utility model discloses a simple and practical, the operation is swift effective, and the probability that the tup that has improved by a wide margin and dropped, hammer handle were sought before getting into the coal tower is easily operated at the scene post, the current way reliability very poor difficult problem when having solved this kind of problem of processing in the present trade.

(2) The utility model discloses a solution that can be better blocks up, damages that coke oven vehicle screw feeder and dry coke quenching rotary seal valve caused because of heavy tup, the hammer handle that drops in subsequent production operation, has guaranteed coke oven production's continuity, has greatly reduced the serious damage that causes above-mentioned equipment.

Drawings

The present invention will be further explained with reference to the following description of the drawings.

FIG. 1 is a schematic view of the production process of the pulverizer and the upstream and downstream belt conveyors shown in FIG. 1;

FIG. 2 is a block diagram of a control structure of the scram device;

description of reference numerals: 1-crusher upstream belt conveyor; 2-heavy duty pulverizer; 3-a first main belt downstream of the crusher; 4-a second main belt at the downstream of the crusher; 5-an operation table; 6-a controller; 7-operating the button.

Detailed Description

As shown in fig. 2, the emergency stop device for searching for dropped articles when a large-sized pulverizer works comprises an operation table 5 arranged in an operation room, wherein the operation table 5 comprises a controller 6, and the controller 6 is electrically connected with each driving device of the pulverizer and used for controlling the working state of the pulverizer; the controller 6 of the operating platform 5 is also electrically connected with an emergency stop button arranged on the operating platform 57, and the emergency stop button 7 is used for emergently stopping the working state of the first main belt machine 3 at the downstream of the crusher in an emergency stop state.

The first main belt machine 3 at the downstream of the crusher and all other main belt processes at the downstream of the crusher are electrically connected with the controller 6 of the operation table for interlocking control. The emergency stop button 7 is bright red, the emergency stop button 7 is semicircular, and the pressing diameter is 3-5 cm.

Referring to fig. 1, the utility model discloses to the rubbing crusher of fig. 1 and upper and lower reaches belt feeder production technology, still provide the scram method of the article (mainly tup or hammer cake) that drops when looking for large-scale rubbing crusher high-speed rotation fast, when unexpected abnormal sound and vibrations in rubbing crusher operation process, post personnel judge for the tup or hammer cake drop back emergency stop operation bench "scram button" very first time, trigger the belt feeder scram action, make the first main belt in rubbing crusher low reaches stop promptly. All the main belt processes at the downstream of the crusher are in an interlocking control state during normal production, so that all the belt conveyors from the downstream of the crusher to the coal tower stop running simultaneously when the first main belt at the downstream of the crusher stops emergently. At the moment, the post personnel can find the falling hammer heads or hammer cakes on the first downstream belt or other belt conveyors. After the emergency stop button is found, the operation table is rotated, the system is recovered to a normal interlocking working state, and the production operation is continued.

In the coking industry, the blended coal needs to be crushed and refined by a large crusher before entering a coal tower, and the method is a feasible emergency stop method for quickly finding out heavy hammers and hammer handles which fall off when the large crusher rotates at a high speed. The problem of poor reliability of the current method when the problem is treated in the industry at present is solved, and after the heavy hammer head and the hammer handle of the large-scale pulverizer rotating at high speed fall, the probability that the falling hammer head and the falling hammer handle are found before entering a coal tower can be greatly improved, so that the problems of blockage, blockage and damage caused by a coke oven vehicle screw feeder and a dry quenching rotary sealing valve in subsequent production operation after the broken hammer head and the broken hammer handle enter the coal tower along with a belt conveyor operating at high speed are reduced, and continuous production is interrupted and the equipment is seriously damaged. The device is simple and practical, the method is feasible, and the field post operation is easy.

The method of the utility model can save cost by 30 ten thousand yuan/year.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a seek scram device of article that large-scale rubbing crusher during operation dropped which characterized in that: the crusher comprises an operation table arranged in an operation room, wherein the operation table comprises a controller, and the controller is electrically connected with each driving device of the crusher and used for controlling the working state of the crusher; the controller of the operating platform is also electrically connected with an emergency stop button arranged on the operating platform, and the emergency stop button is used for emergently stopping the working state of the first main belt conveyor at the downstream of the crusher in an emergency stop state.

2. The emergency stop device for searching dropped articles of a large-scale pulverizer working according to claim 1, characterized in that: the first main belt conveyor at the downstream of the crusher and all other main belt processes at the downstream of the crusher are electrically connected with the controller of the operation table for interlocking control.

3. The emergency stop device for searching dropped articles of a large-scale pulverizer working according to claim 1, characterized in that: the emergency stop button is bright red.

4. The emergency stop device for searching dropped articles of a large-scale pulverizer working according to claim 3, characterized in that: the emergency stop button is semicircular, and the pressing diameter of the emergency stop button is not less than 3 cm.

5. The emergency stop device for searching dropped articles of a large-scale pulverizer working according to claim 4, characterized in that: the pressing diameter is 3-5 cm.