Screening type deslagging system

Abstract

The utility model discloses a screening type deslagging system. For an existing thermal power plant, coal with the ash content of 20% or above is inevitably required to be burnt, the coal can be coked in a boiler, and large coke blocks can fall off through ash blowing. For a common dry-type slag discharging system, large coke blocks are difficult to grind through a slag crusher and need to be taken out manually, but the labor cost is increased. The coal cinder conveying device comprises a conveying device, a roller screen, a cinder crusher, a bucket elevator and a cinder bin, an outlet of the conveying device is communicated with an inlet of the roller screen and used for conveying coal cinder into the roller screen to be screened, an outlet of the roller screen is communicated with an inlet of the cinder crusher and used for crushing the screened coal cinder with qualified granularity, and the crushed coal cinder is conveyed to the bucket elevator. And an outlet of the slag crusher is communicated with the bucket elevator and is used for conveying the crushed coal slag into the slag bin through the bucket elevator. The screening type slag discharging device is used for screening type slag discharging.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of screenable residue discharging systems. BACKGROUND

[0002] Residue discharging system is one of important systems of thermal power plant, and their running state is directly related to the safety production of power plant. At present, a large number of power plants use dry residue discharging system. For the current thermal power plant, it is inevitable to burn coal with ash content of more than 20%. These coal will coke in the boiler, and large coke pieces will fall down through soot blowing. For the general dry residue discharging system, these large coke pieces are difficult to be ground by the slag crusher, and need to be taken out manually. However, this will increase the cost of labor, and the slag block temperature is as high as several hundred degrees Celsius, which will cause personnel scalding and even serious personnel injury. SUMMARY

[0003] The utility model aims at making up for the deficiency of prior art, and provides a screenable residue discharging system.

[0004] The above-mentioned purpose is realized by the following technical scheme.

[0005] A screenable residue discharging system comprises a conveying device, a roller screen, a slag crusher, a bucket elevator and a slag bin. The outlet of the conveying device is communicated with the inlet of the roller screen, for conveying the coal slag into the roller screen for screening. The outlet of the roller screen is communicated with the inlet of the slag crusher, for crushing the coal slag with qualified particle size after screening. The outlet of the slag crusher is communicated with the bucket elevator, for conveying the slag after crushing to the slag bin by the bucket elevator.

[0006] The conveying device is a steel belt conveying device. Beneficial effects

[0007] 1. The roller screen can screen out large coke pieces, which are taken away by a transport vehicle and processed in a special transport room, so as to avoid economic loss caused by the shutdown of the dry residue discharging system, and save manpower, material resources and economic cost for the unit. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure Figure 1 is the principle diagram of the utility model;

[0009] In the figure: 1, slag well; 2, hydraulic shut-off door; 3, conveying device; 4, roller screen; 5, slag crusher; 6, slag discharge pipeline; 7, slag bin; 8, bucket elevator. DETAILED DESCRIPTION

[0010] Reference Figure 1A screenable residue discharging system, which comprises a conveying device 3, a roller screen 4, a residue crusher 5, a bucket elevator 8 and a residue bin 7, the outlet of the conveying device is communicated with the inlet of the roller screen for conveying the residue into the roller screen for screening, the outlet of the roller screen is communicated with the inlet of the residue crusher for crushing the residue with qualified particle size after screening, the outlet of the residue crusher is communicated with the bucket elevator for conveying the residue after crushing to the residue bin through the bucket elevator.

[0011] The conveying device is a steel belt conveying device.

[0012] Working principle: the residue of the boiler enters into the residue well, the hydraulic shut-off door 2 of the residue well is opened, the residue is conveyed to the roller screen through the steel belt conveying device, the larger coke is screened out through the roller screen after screening, is discharged to the transport vehicle through the residue outlet pipeline 6, is taken away by the transport vehicle, is treated in a special transport room, avoids the economic loss caused by the shutdown of the dry residue discharging system, saves the manpower, material resources and economic cost for the unit, the residue with qualified particle size after screening is crushed in the residue crusher, is conveyed to the residue bin through the bucket elevator after crushing.

Claims

1. A screenable slag removal system characterized by: The composition comprises a conveying device, a roller screen, a slag crusher, a bucket elevator and a slag bin, the outlet of the conveying device is communicated with the inlet of the roller screen, so as to convey the coal slag into the roller screen for screening, the outlet of the roller screen is communicated with the inlet of the slag crusher, so as to crush the coal slag with qualified granularity after screening, and the outlet of the slag crusher is communicated with the bucket elevator, so as to convey the crushed coal slag into the slag bin through the bucket elevator.

2. A screenable slag removal system according to claim 1, characterised in that: The conveying device is a steel belt conveying device.

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