CN2843587Y

CN2843587Y - The glass fibre bag deduster

Info

Publication number: CN2843587Y
Application number: CN200520124756.3U
Authority: CN
Inventors: 郭伟; 袁茂刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-18
Filing date: 2005-11-18
Publication date: 2006-12-06
Anticipated expiration: 2015-11-18

Abstract

The utility model provides a glass fiber bag dust collector. The bottom of the cylinder body is connected with a conical ash hopper with an ash discharge valve at the bottom. At least three dust removal chambers are formed through the partitions. The top cover connected to the upper port of the cylinder opposite to each dust removal chamber is connected with an air outlet valve and a reverse blow valve. There are several filter cloths supported by filter bags and wrapped in the dust removal chamber. The lower bag mouth of the filter bag is connected to the ash hopper, the filter bag is hung on the hanging beam connected to the upper part of the dust removal chamber, and the lower port of the cylinder body is connected to the flower plate.

Description

The glass fibre bag deduster

Technical field:

The utility model relates to cleaner, relates in particular to a kind of machine shaft kiln cleaner.

Background technology:

Machine shaft kiln dust removal problem one is to being difficult problem, and this is because the machine shaft kiln has three height, more than two, characteristics that fluctuate, i.e. dust concentration height, and the water capacity height, the gas temperature height, fine dust is many, and pernicious gas is many; The characteristic that all parameter fluctuations are all bigger causes.Want to resolve machine shaft kiln dust removal problem, at first to solve problems such as dewfall, burning bag, burn into dust concentration height, the sticking bag of dust, the use of deduster simultaneously, installation, maintenance, easy to maintenance also be a key factor, otherwise deduster is good also of no avail again.

Summary of the invention:

The purpose of this utility model is intended to overcome the deficiencies in the prior art, provide a kind of can continuous operation, easy for operation, be suitable for the flue gas of shaft kiln dedusting, and the glass fibre bag deduster of better dust removal effect.

The purpose of this utility model can realize by following technical measures

This glass fibre bag deduster is connected with taper ash bucket that the bottom is connected with ash-valve under cylindrical shell, under the central air hose at cylindrical shell middle part the deflection cone that is positioned at ash bucket is arranged, constitute at least three dirt pockets by dividing plate in the cylindrical shell, be connected with out air-valve and blowback air-valve on the top cover of the connection cylindrical shell upper port that each dirt pocket is relative, the some filter bags that are made of the filter cloth of filter bag support and outer wrapping are arranged in the dirt pocket, the lower bag mouth of filter bag is communicated with ash bucket, filter bag is hung oneself to hang over and is connected in the hanging on the beam of dirt pocket internal upper part, and the cylindrical shell lower port is connected on the card.

The purpose of this utility model also can realize by following technical measures

Described card is provided with the cloth bag seat that is communicated with the sack and the ash bucket of filter bag; Electric heater and rapping apparatus are installed on the described ash bucket; Described filter bag supports and is selected from from the swelled spring hanging; Described cylindrical shell bottom is provided with access door.

The utility model operation principle:

(1) pre-separation:

The dusty gas that shaft kiln is discharged enters the air inlet central air hose at cylindrical shell center through flue, under the suction function that the dust pelletizing system air-introduced machine produces, after blocking crude particle dust, deflection cone evenly enters each bag chamber of deduster in top, ash bucket center, crude particle dust in the ash-laden gas since deflection cone block and the effect of self gravitation directly falls into ash bucket, realize the pre-separation of dust.

(2) filter:

Dusty gas enters filter bag, and dust is trapped within the filter bag inner surface, and dusty gas then filters through filter bag and is purified, purified gas enters a bag chamber, through going out air-valve, escape pipe, is discharged by exhaust blower then, the utility model is the top air-out, negative-pressure operation inward flow filtration-type pocket type deduster.

(3) deashing and control automatically:

Deduster is after operation a period of time, the dust layer that the filter bag inner surface captures thickens, the running resistance of deduster rises, after being increased to certain value, just need carry out deashing to filter bag, at this moment microcomputer instructs out air-valve to cut out exhaust, open the blowback air-valve simultaneously, wind enters a bag chamber by back blowing machine by reverse-blow pipe, blowback air-valve, and the filter bag that will expand originally shrivels distortion and disposes the dust that the filter bag inner surface adheres to, and the dust under clear falls into ash bucket, discharges through unloading valve, whole deashing process is that locellus carries out in turn, does not influence the operate as normal of deduster.

Purge mode can be divided into fixes time, decides two kinds of methods of resistance:

Regularly deashing be by time program, each chamber according to adjustable time parameter take turns automatically deashing, deduster cleaning cycle be divide in 2.5 hours six grades adjustable, every chamber deashing time is six grades of selections of branch in 3 minutes.

Decide resistance deashing control and then be the import and export pressure reduction pressure of deduster and convert electric signal to by differential pressure transmitter to carry out deashing, the course of work is as follows:

Inlet and outlet pressure obtaning device → differential pressure transmitter → deashing controller → relay magnetic valve → cylinder → lifting transfer valve.

Except that above-mentioned two kinds of control methods, also be provided with manual control mechanism, can manually carry out normal deashing.

The utility model operating temperature control explanation:

The flue gas of shaft kiln temperature generally fluctuates in 60 ℃ of-300 ℃ of scopes, humidity of flue gas fluctuates in the 4-12% scope, for the dewfall that prevents deduster is stuck with paste bag and because the generation of serious accidents such as bag is burnt in the too high generation of temperature, is taked following measure in this deduster system:

(1) admission line of bag dust collector, cylindrical shell and ash bucket will be taked the insulation measure, to prevent the deduster dewfall.

(2) locate to be equipped with temperature detection and autoalarm at the air inlet of deduster, exhaust outlet etc., and the central air hose that waste gas enters above cylindrical shell is connected with cold wind and enters pipe, waste gas is in case surpass the serviceability temperature scope of bag dust collector, then give the alarm and open cold blast sliding valve automatically, to guarantee that waste gas enters the filter bag temperature in control range, ensure the deduster safe operation.

(3) thermocouple heating and rapping apparatus have been installed on ash bucket, have been avoided the dewfall dust stratification problem that produces because of low temperature.

The Applicable temperature of glass fibre bag dedusting is 280 ℃, and the glass fibre bag deduster is selected the fine quality EWF550 glass buiky yarn filter cloth through the processing of RH technical recipe for use.Filtrate has good heat resistance, can use for a long time under 280 ℃ high temperature; Corrosion-resistant, various media all there is stability preferably; Hydrophobicity is strong, and smooth surface is easy to advantages such as deashing, one to two year average life.

Cylindrical shell of the present utility model adopts the cylinder type full steel structure, waste gas is entered by the cylindrical shell top, import the bottom through central air hose, evenly enter each chamber, reasonable in design, not only solved the deficiency that prior art exists, a glass fiber bag type deduster upper face plate dust stratification and the uneven difficult problem of other glass deduster air intakes have also been solved simultaneously, because equipment also has been equipped with measures such as microcomputer control, switching deashing, deashing is more thorough, and automaticity is higher, moves more stable, higher with the main frame running rate, the chimney breast concentration of emission is lower than the 50mg/Nm discharge standard of national regulation.This equipment can not shut down locellus and be changed bag, and is simple to operate, safe and reliable, is the ideal equipment that solves the flue gas of shaft kiln dedusting.

Description of drawings:

Fig. 1 is the schematic diagram of the utility model embodiment;

Fig. 2 is the A-A cutaway view of the amplification of Fig. 1;

Fig. 3 is the plane that amplify at Fig. 1 cylindrical shell top.

The specific embodiment:

Column 18 supports cylindrical shell 8, cylindrical shell 8 times is connected with the taper ash bucket 10 that the bottom is connected with ash-valve 12, the central air hose at cylindrical shell 8 middle parts has the deflection cone 11 that is positioned at ash bucket 10 for 4 times, the central air hose 4 of cylindrical shell 8 tops is connected with cold blast sliding valve, constitute six dirt pockets 5 by dividing plate 21 in the cylindrical shell 8, be connected with out air-valve 2 and blowback air-valve 3 on the top cover 20 of connection cylindrical shell 8 upper port that each dirt pocket 5 is relative, respectively going out air-valve 2 is communicated with discharge pipe 1, each blowback air-valve 3 is communicated with the reverse-blow pipe 15 that is connected blower fan 19, there are the some filter bags of making by screen cloth to support in the dirt pocket 5 and filter bag 6 that the filter cloth of outer wrapping constitutes, described filter bag supports and is selected from from the swelled spring hanging, the lower bag mouth of filter bag 6 is communicated with ash bucket 10, filter bag 6 is hung oneself to hang over and is connected in the hanging on the beam 7 of dirt pocket 5 internal upper parts, the electric heater 16 that adopts thermocouple is installed on the ash bucket 10 and adopts motor to play the rapping effect as rapping apparatus 17, cylindrical shell 8 lower port are connected with card 14, card 14 is provided with the lower through-hole 13 that is communicated with the sack and the ash bucket 10 of filter bag 6, and cylindrical shell 8 bottoms are provided with inspection door 9.

Claims

1, the glass fibre bag deduster, it is characterized in that under the cylindrical shell (8) that the taper ash bucket (10) that is connected with ash-valve (12) with the bottom is connected, under the central air hose (4) at cylindrical shell (8) middle part the deflection cone (11) that is positioned at ash bucket (10) is arranged, constitute at least three dirt pockets (5) by dividing plate (21) in the cylindrical shell (8), be connected with out air-valve (2) and blowback air-valve (3) on the top cover (20) of connection cylindrical shell (8) upper port that each dirt pocket (5) is relative, the some filter bags (6) that are made of the filter cloth of filter bag support and outer wrapping are arranged in the dirt pocket (5), the lower bag mouth of filter bag (6) is communicated with ash bucket (10), filter bag (6) is hung oneself to hang over and is connected in the hanging on the beam (7) of dirt pocket (5) internal upper part, and cylindrical shell (8) lower port is connected on the card (14).

2, glass fibre bag deduster according to claim 1 is characterized in that described card (14) is provided with the cloth bag seat (13) that is communicated with the sack and the ash bucket (10) of filter bag (6).

3, glass fibre bag deduster according to claim 1 is characterized in that being equipped with on the described ash bucket (10) electric heater (16) and rapping apparatus (17).

4, glass fibre bag deduster according to claim 1 is characterized in that described filter bag support is selected from from the swelled spring hanging.

5, glass fibre bag deduster according to claim 1 is characterized in that described cylindrical shell (8) bottom is provided with access door (9).