CN203829814U - Pulse back-flushing composite type bag-type dust collector - Google Patents

Abstract

The utility model discloses a pulse back-flushing composite type bag-type dust collector. The pulse back-flushing composite type bag-type dust collector is composed of a dust-gas-containing inlet, a purified gas outlet, a dust collector box body, a cloth bag device and a chamber-dividing blowing device, wherein the top or upper side part of the dust collector box body is additionally provided with a back-flushing gas input pipeline and a chamber-dividing back-flushing gulp valve, and the back-flushing gas input pipeline is connected with each chamber blowing part of the dust collector by virtue of the chamber-dividing back-flushing gulp valve. The dust collector provided by the utility model has the advantages that clean high-temperature gas is input in processing high-temperature high-humidity smoke, a problem that the filtering bag condensates is thoroughly solved, deashing is blown, continuous input clean gas and high-pressure airflow can enter the cloth bag together along the high pressure airflow ejected by a pulse valve, a drainage and exploding theory is really realized, a back-flushing cloth bag enters a bag chamber along later-on back-flushing airflow, dust which is shook off from top to bottom under negative pressure action and thick dust-containing airflow rapidly flows and deposits on the lower part of an ash bucket, and the deashing effect is greatly improved.

Description

Pulse backblowing composite bag-type deduster

Technical field

The utility model pulse backblowing composite bag-type deduster relates to a kind of industrial fumes treatment facility, refers more particularly to the sack cleaner of processing high temperature, high humidity, large exhaust gas volumn.

Background technology

In the application of current industrial dust collector, two kinds of the most general bag type dust removing technologies are blowback (suction) wind deashing dedusting technology and pulse dust cleaning dedusting technology, these two kinds of technology are widely used because of advantage separately, and its defect also displays in various special application. the utilization of back flushing type deduster is oppositely blown into or sucks air-flow and causes the swollen of filter bag, flat shake off the dust stratification on filter bag surface, its deashing ability a little less than, particularly in the time processing thin and dust that caking property is larger, filter bag superficial dust is too thick, SR strengthens, long-term operational effect is often undesirable, in the time processing high-temperature flue gas, filtration velocity multiselect 0.5m/min, makes equipment volume larger, and floor space is also large, pulsaire collector utilizes Compressed Gas jetting deashing, and every chamber some rows jet successively, and its deashing ability is stronger, and filtration velocity is many at 1-2m/min, and volume reduces greatly, but in the time processing high temperature, high-humidity gas fume, particularly colder area in the winter time, the supercool Compressed Gas of jetting is easy to make cloth bag dewfall, hardens, and affects its use, secondly, when jetting deashing, desirable mode should be: utilize the high pressure draught of pulse valve ejection, enter together in cloth bag with the gas that retains on mode of jet guiding bag top, chamber, cause the rapid quick-fried swollen of cloth bag, so that filter bag superficial dust is shaken off, and in fact, close behind this chamber at air cylinder lifting valve, winding-up position, top, this bag of chamber, in strong negative pressure state, seldom retains gas, when particularly winding-up is arranged in a Room more, can think and there is no that retaining gas exists below.So this theory has been only theory, on the online pulse dust cleaning deduster of microminiature, have effect, and this effect does not realize completely on large-scale pulse blow filter.

Summary of the invention

The utility model provides a kind of pulse backblowing composite pocket type deduster, on the basis of large compartment's pulsaire collector structure, at its top or upper lateral part increased back-blowing introduce pipeline, the junction of introducing pipeline and the each chamber of deduster at back-blowing is provided with the chamber-dividing counter-blowing aeration valve that can automatically control, and changing free-standing flue-dust retainer is communication type flue-dust retainer.This novel deduster combines the principle of reverse gas cleaning and pulse dust cleaning dexterously, and the effect of various theories is performed to ultimate attainment.In the time processing high temperature, high-humidity gas fume, introduce clean high-temperature gas, can thoroughly solve the problem of dewfall; In the time of jetting deashing, the clean gas of this continuous introducing, along with the high pressure draught of pulse valve ejection enters in cloth bag together, has really realized drainage, quick-fried swollen theory; And, the blowback air-flow entering subsequently, blowback cloth bag enters behind bag chamber, under suction function, from up to down flows, and dust, dense dust-contained airflow after driving flow and deposit to ash bucket bottom rapidly, can make the effect of deashing greatly improve.

In order to realize the goal of the invention of the utility model pulse backblowing composite bag-type deduster, its technical scheme is as follows: 1, on the basis of outlet and inlet pipeline, dust collector box body, cloth bag device, blowing device and the chamber structure of large compartment's pulsaire collector, at top or upper lateral part increased back-blowing introduce pipeline, back-blowing air-flow can be from clean high-temperature gas or the natural air at fan of dust remover rear portion; 2, be provided with in the junction of back-blowing introducing pipeline and the each chamber of deduster the chamber-dividing counter-blowing aeration valve that can automatically control, or be automatic tee valve by former single locellus lift valve function modifications; Make back-blowing air flow energy in the time that this chamber lift valve cuts out, enter this winding-up position, chamber, to realize effect of reinforcement winding-up ability and supplementary reverse gas cleaning; 3, changing free-standing flue-dust retainer is communication type flue-dust retainer, in order to reverse gas cleaning function time, realizes, and is also beneficial to dust in flue gas entering natural subsidence before filter bag;

The utility model pulse backblowing composite bag-type deduster has following characteristics compared with existing back-blowing deduster, pulsaire collector: 1, deashing ability is the compound reinforcement of two kinds of effects, and 1+1 >=2, performance is much better than the deduster of any single principle; 2, can better meet under the conditions such as high temperature, high humidity, high-adhesion flue gas and use, can thoroughly solve the difficult problems such as cloth bag dewfall; 3, the blowback air-flow of introducing, after blowback cloth bag, enters in bag chamber and from up to down flowed in bag chamber by suction function, and the dust after driving, dense dust-contained airflow flow and deposit to ash bucket bottom rapidly, can make the effect of deashing greatly improve; 4, because of above-mentioned three, the use face of this deduster is more extensive, and maintenance cycle is longer, and maintenance capacity still less.

Brief description of the drawings

Accompanying drawing is the embodiment accompanying drawing of pulse backblowing composite bag-type deduster structural principle.

Accompanying drawing wherein illustrates its theory and structure as example in a Room taking this type deduster.

In accompanying drawing: when 1 ash-laden gas import, 2 clean gas outlets, 3 dust collector box bodies, 4 cloth bag devices, 5 are filtered, airflow direction, 8 compressed gas main pipelines, 9 compressed gas nozzles, 10 pulse valves, 11 locellus lift valves, 12 chamber-dividing counter-blowing aeration valves, 13 lifting cylinders, 14 back-blowings are introduced pipelines, 15 communication type ash buckets, 16 lock wind ash-discharging devices when airflow direction, 7 blowback when airflow direction, 6 winding-up.

Detailed description of the invention

Below in conjunction with embodiment accompanying drawing, the utility model is further elaborated.

The structure of pulse backblowing composite bag-type deduster and principle are as accompanying drawing, on the basis of 1 ash-laden gas import, 2 clean gas outlets, 3 dust collector box bodies, 4 cloth bag devices and the blowing device of pulsaire collector, chamber structure, having increased that 14 back-blowings introduce pipeline, 12 chamber-dividing counter-blowing aeration valves, change independent sets ash bucket is 15 communication type ash buckets.When deduster normally moves, ash-laden gas is entered in deduster by 1 ash-laden gas import, after ash bucket baffling deposition, filters through filter bag again, and when in filter bag chamber, air-flow is as 5 filtration, as shown in airflow direction, dust is arrested in cloth bag outer surface, in the time of the deashing of this chamber, programme-control cabinet sends instruction, 13 lifting cylinder actions, close this chamber 11 locellus lift valves, open 12 blowback aeration valves, Compressed Gas in 8 compressed gas main pipelines is through 10 pulse valve controls, spray in 4 cloth bag devices from 9 compressed gas nozzles, compressed air stream guiding back-blowing air-flow blasts in filter bag together, during as 6 winding-up as shown in airflow direction, filter bag is trembled swollen, dust stratification comes off, subsequently, pulse valve cuts out, blowback air-flow continues blowback cloth bag the dust stratification coming off in this indoor drive and dense dusty gas as shown in 7 blowback air flow path directions and deposits to ash bucket bottom rapidly, until respectively arranging filter bag ash removal, this chamber finishes, ash-removal effect is improved greatly.Dust stratification in ash bucket discharges by 16 lock wind ash-discharging devices.

Claims (1)

1. pulse backblowing composite bag-type deduster, comprise ash-laden gas import, clean gas outlet, dust collector box body, cloth bag device, locellus blowing device, it is characterized in that: on described dust collector box body top or upper lateral part, be provided with back-blowing and introduce pipeline and chamber-dividing counter-blowing aeration valve, described back-blowing is introduced pipeline and is connected to winding-up position, the each chamber of deduster by described chamber-dividing counter-blowing aeration valve.