CN2199162Y - Resistance type coal-conveying duster - Google Patents

Abstract

The utility model discloses a resistance type coal-conveying duster, relating to the environmental protection, mainly used for conveying coal and removing dust. The utility model is characterized in that natural wind generated when a material guiding belt runs can drive splashing coal dust in a sealed box body. The saturated coal dust gradually reduces speed and falls down through a plurality of the stages of resistance baffle plates, alternating changing flow directions and resistance receiving depressurization. Thus, the coal dust can not out leak anymore and back falls onto the belt step by step. Therefore, the dust removing purpose is obtained. The utility model has the advantages of simple structure, small size, no electricity and no water necessities in operation, no observation of the work, good dust removing effect and no limitations of weather and geography. If the utility model matches with running water spraying, the utility model can be used for removing the dust of boiler soot in transplantation.

Description

Resistance type coal-conveying duster

The defeated coal dust exhaustor utility model of this resistance type relates to a kind of environmental protection device.

Pollution caused by coal dust between the defeated coal car of thermal powerplant, it is the key factor that directly influences workers ' health and power plant safety production, the coal conveyer belt transfer point then is the place, gangway that causes the main seedbed, particularly coal crushes of pollution caused by coal dust between defeated coal car, serious especially source of pollution.Country takes much count of the pollution caused by coal dust problem, take precautions against from many aspects and administer, but, mainly contain following several: cloth-bag type purifying and dedusting, the dedusting of swash formula, coal breakage water spray humidification and spray dust-arrest improvement, charged water spray dedusting and sealing or the improvement of prolongation deflector chute etc. with regard to its way and device speech.Though it is these ways have obtained certain effect, all unsatisfactory.Cloth-bag type dusting equipment complexity, the cost height is safeguarded inconvenience, easily laying dust stops up; It is very much inconvenience that the dedusting of swash formula is used at north cold area; The charged water spray dedusting also because of factors such as cost, maintenance and weathers, has limited popularization; With deflector chute sealing or prolongation, though install simple, but often leak coal because of belt deviation, particularly after the deflector chute sealing before the coal crushes inlet, nonconformity coarse coal Chang Yin on the belt can't check and is stuck in the somewhere of seal section, result in blockage and tear belt, dust removing effects is not good yet in total seeing.So above-mentioned various measure, way all exist limitation and deficiency.

The purpose of this resistance type dust exhaustor is to provide a kind of dust collector that can widely use that can overcome above-mentioned all deficiencies, and it can reach dust removing effects preferably, installs simple again, easy to maintenance, cost is low, is not subjected to condition effect such as geography, weather, is a kind of device of dry dust removal on the spot.

This dust exhaustor is achieved in that the natural wind that produces when utilizing defeated coal guide belt to turn round, drive the saturated coal dust that splashes in the deflector chute, in the osed top box-type container, by the working direction that repeatedly changes coal dust stream its deceleration of being obstructed, decompression are fallen, constantly reduce dust concentration, until making the coal dust less than 5 μ m particle diameters also can be suspended state, then coal dust just no longer escapes and returns step by step and fall on the guide belt, thereby reaches the dedusting purpose.

The architectural feature of this dust exhaustor as shown in drawings.

Figure one is just cuing open and scheme of installation of this dust exhaustor structure;

Figure two is assisted dust-collectings, installs lock gas and weighing apparatus pressure on-cycle scheme drawing on coal crushes additional.

Below in conjunction with accompanying drawing, describe the details and the service condition of the concrete device that the utility model proposes in detail.

In figure one, (1) is the coal conveyer belt in original coal crushes exit; (2) be the guide ledge body at coal conveyer belt place, their internal action is constant, all vertically is included in the housing bottom of this dust collector, makes it except that place, the gangway opening in shell of belt, and their existence does not all destroy the tightness of housing; (3) being the containment shell of this dust collector, is a long case structure, is made by sheet steel, with guide ledge body weldering system one, in order to fix what resistance baffle plate (4) and to guarantee that coal dust does not escape; Resistance baffle plate (4) is made by the steel plate thicker slightly than housing, oblong-shaped, size can with shell wall two in angle steel rib overlap joint on the facades, what is parallel to each other vertical substantially with belt, the spacing of being separated by from front to back increases gradually, the size of apparent wind speed and the coal dust concentration of splashing can be a lot of level, usually get odd number, generally there is Pyatyi just can obtain promising result, the odd number step stays in shell being and leads the dirt hole, and promptly the upper end of baffle plate is not connected with shell wall and leaves a logical rectangular cavity, and lower end and belt boundary overlap with soft lotus (5), both sides and inner walls angle steel rib are twisted with bolt and are connect, and seam installs sealing adhesive plaster (6) additional; Even numbers level baffle plate stays under in shell being and leads the dirt hole, promptly leaves bigger gap between baffle plate lower end and the belt, and its excess-three limit is all twisted with bolt with shell wall and connect and also install additional sealing adhesive plaster (6) sealing.The Kong Jun up and down of baffle plates at different levels is in order to lead dirt, make coal dust that belt wind carries from one-level to final stage, the break-in of doing is one on the other flowed, then the coal dust pressure release of being obstructed is step by step slowed down, drop on the belt gradually piecemeal from big particle diameter to small particle diameter and to go with coal charge, to final stage coal dust has almost been fallen on the belt fully, thereby reached the purpose of improvement and dedusting.Soft lotus (5) can be made also available other high-abrasive materials with coal conveyer belt and be done, and its effect is to guarantee that baffle plate and coal face have excellent contact, prevent that coal dust from passing from having odd number level baffle plate and the short circuit of belt coal face of leading the dirt hole.

Leading the dirt hole on the odd number level baffle plate, can be a logical rectangular cavity, also can install the drag strip (7) of venetian blind type additional, and total selection purpose is to help dredging with break-in of coal dust to slow down.The spacing of each baffle plate, should strengthen to outlet step by step from belt inlet, and arrive the exit more more little because of wind speed, and the increasing spacing is intended to make wind speed further to reduce, so that the suspension of coal dust and whereabouts.Whole dust collector can be made separately and surely be loaded on deflector chute again and help, and also can help repacking at former deflector chute.

The structure that figure two provides is as supporting improvement of the present utility model, and purpose is to make dust removing effects better.It is characterized in that near the gangway of coal crushes on the convey coal pipe, respectively install a sealing orifice plate that is called flapper (8) additional, its unlatching is finished by the coal breakage in the pipeline, opens when the flapper that promptly enters the mouth advances coal, open when the outlet flapper produces coal, no coal is then all closed through out-of-date.Close by spring (9) control on the outer orifice plate arm of pipeline, it is hole size how much becoming with coal breakage that orifice plate is opened size.When defeated coal, can guarantee the tight of through hole like this, also can keep the weighing apparatus pressure of interior the air-flow in bypass balance tube road (10), help coal crushes from the air blast self-loopa.The balance tube road is made by common conduit peschel, diameter is unsuitable meticulous, circulation is not smooth when meticulous, coal dust easily escapes, the communication port of it and convey coal pipe, one between the inlet and inlet flapper of coal crushes, one between the outlet and outlet flapper of coal crushes, since two flappers (8) relative closure the gangway of coal crushes, make coal crushes become a relative isolated sealing member with the external world, then the air blast of coal crushes relies on the oneself's circulation of bypass balance tube road, has guaranteed that then the less of coal dust escapes.In addition, because the existence of the following outlet of coal crushes flapper has reduced the drop of coal crushes outlet coal greatly, thereby also weakened splashing of coal dust.The orifice plate of flapper is made by steel plate, and the turning cylinder of keying is contained in the pipeline outside, links to each other with spring (9) by the orifice plate Control arm.

The device that this dust exhaustor provides is work like this: the raw coal in the convey coal pipe enters coal crushes through inlet flapper (8), coal crushes with coal dust broken after the outlet flapper (8) coal is sent in the deflector chute, because the orifice plate at two flapper places and the partition of coal charge, the coal dust that occurs during the coal crushes broken coal can not escape, only self-loopa in the airtight loop of forming with bypass balance tube road (10).When the coal charge behind broken coal was fallen deflector chute, the dust that the natural wind that belt (1) running produces will splash was taken away, and the break-in of doing one on the other through each baffle plate is flowed step by step, speed is slowed down, pressure is lowered, and then coal dust just little by little drops on the belt step by step, goes with belt.So, although dry type coal breakage dust is very big, do not have outside the casing of coal dust effusion dust exhaustor, thereby reached dust removing effects.

The enforcement of this dust exhaustor is more or less freely, and materials are also very simple, has sheet steel, angle steel just can satisfy.

This dust exhaustor is simple in structure, volume is little, need not to ward off in addition installing space, can install on original deflector chute.Not electricity consumption in service, not water, without operation monitoring, good dedusting effect, maintenance and expense are very low, have only spring and lock gas plate rapid wear, but this are affiliated facilities, it is not high to change cost, the duration is short.Whole device has practicality more widely, is not subjected to the weather environmental limit, and torrid areas, extremely frigid zones are all applicable.

This dust exhaustor all can use at all flying dust places of defeated coal operating mode.According to technical conceive of the present utility model, cooperate the running water spray to transplant in dust exhaustor case internal upper part space and promote the dedusting that is used for boiler smoke.

Claims (4)

1, the defeated coal deflector chute of a kind of utilization is done base body, fail the coal dust exhaustor by the resistance type that shell and multistage baffle plate constitute, it is characterized in that shell (3) made by sheet steel, be long case structure and guide ledge body (2) weldering system one, coal conveyer belt (1) and guide ledge body (2) vertically are included in case shell bottom, shell wall is except that gangway place's perforate of coal conveyer belt, and all the other all are leak frees everywhere; Multistage resistance baffle plate (4) is installed in the shell in addition, these baffle plates are parallel to each other, make by the steel plate thicker slightly than shell wall, oblong-shaped, size can with shell wall two in angle steel rib overlap joint on the facades, vertical substantially with belt (1), the spacing of being separated by from front to back increases gradually, and the upper end of its odd number level baffle plate is not connected with shell wall, leaves a logical rectangular cavity, lower end and belt boundary overlap with soft lotus (5), the angle steel rib of both sides and shell inwall is twisted with bolt and is connect, and seam installs sealing adhesive plaster (6) additional, leaves big gap between the lower end of even numbers level baffle plate and the coal conveyer belt, its excess-three limit all links to each other with shell wall, also is to install sealing adhesive plaster (6) additional with bolt to twist and to connect.

2,, it is characterized in that to install blinds bar (7) additional on the logical rectangular cavity in upper end of odd number level baffle plate by the defeated coal dust exhaustor of the described resistance type of claim 1.

3, by the defeated coal dust exhaustor of the described resistance type of claim 1, it is characterized in that soft lotus (5) can be cooked of coal conveyer belt, also available other high-abrasive material is done.

4, by the defeated coal dust exhaustor of the described resistance type of claim 1, it is characterized in that near the outlet and inlet of coal crushes on the convey coal pipe, respectively install a sealing orifice plate that is called flapper (8) additional, the unlatching of this orifice plate is finished by coal breakage in the pipeline, closes by the control of the spring (9) on the orifice plate arm outside the pipeline; Between the gangway and each flapper (8) of coal crushes, all a bypass balance tube road (10) is installed in perforate in addition additional, and this balance tube road is made by common conduit peschel, and caliber is unsuitable meticulous.

Images