CN2186106Y - Gas rotary throw-back position jetting dust-cleaning device - Google Patents

Abstract

The utility model relates to a side-inserted flat bag dust remover of an air tightness rotary switching positioning jetting dust-cleaning device. The switching valve of the side-inserted dust remover is an electric rotary switching valve and driven by a ratchet in order to realize positioning long pulse 10-30 seconds jetting, that is some sticky dust can also wash back and clean dust effectively. The nozzle of the valve is connected with a rubber sealing ring, and a jetting dust-cleaning air duct is caused to have very high air tightness. The rate of air leakage of the dust remover is only 1.26 %. The dust remover is has the characteristics of compact structure, flexible assembly, convenience in changing bags, high dust-cleaning effect and small running resistance, and is an apparatus with good performances for environmental protection.

Description

Gas rotary throw-back position jetting dust-cleaning device

The utility model relates to the switching ash-clearing technology of locellus sack cleaner, provides a kind of air-tightness revolution to switch the location jetting deashing device, and it belongs to the device in the solid isolation technics.

Current, the sack cleaner that generally uses in the world has two big classes: a class is single cell structure, behind the filter bag laying dust under the on-load state the contrary spray of filter bag deashing by row or one by one, as pulse blowing bag type dust precipitator, rotary counter-blowing and yaw formula flat bag deduster.Another kind of for dividing cell structure, behind the filter bag laying dust,, insert flat bag deduster, the big sack cleaner of chamber-dividing counter-blowing, downflow type sack cleaner as the side stopping to carry out locellus switching reverse gas cleaning under the filtration state.Other flat bag deduster and the big sack cleaner of chamber-dividing counter-blowing inserted is a kind of novel minute cell structure sack cleaner that emerges in external the seventies later stage, has assembling flexibly, compact conformation, and it is convenient to change bag, reliable, handles characteristics such as air quantity is big.Be the deashing regenerability of deashing mechanism for the key problem in technology of sack cleaner, current minute cell structure sack cleaner, the mechanism that realizes locellus adverse current deashing adopts three-way switch valve, usually triple valve has pneumatic and electronic two types, the push rod three-way valve of for example Japanese sun cast iron commercial firm, the air-leg valve of U.S. Fu Le company all is a Room one valve, promotes valve plate by cylinder and switches.Another is to stir switching by motorized cams, and no matter the transfer valve locellus deduster of these two kinds of patterns is homemade or external product, disadvantages such as ubiquity air leak rate of air curtain height, deashing property difference, and its main cause is that valve is many, the probability that leaks out also just increases.The contrary spray of its malleation air quantity major part is lost, really act on the 30%-70% of the just contrary gaseous blast of air-flow on the deashing filter bag, and the deashing mechanism functional reliability is poor, the location jetting deashing device is switched in China's utility model patent revolution, patent No. 90207041.X has overcome the shortcoming of preceding Syria product, but has not had seal approach owing on the nozzle, also there be certain leaking out, reduce ash-removal effect.

The purpose of this utility model is to insert the supporting a kind of desirable deashing device of flat bag deduster for the side, it is simple in structure, reliable, air leak rate of air curtain is little, carrying out revolution switches, the location winding-up, two-state long pulse deashing mechanism, realize best deashing regeneration function, overcome air-flow and gang up short circuit phenomenon, improve and divide cell structure other reliability of inserting flat bag deduster.

The utility model is to overcome the deashing device of a Room one valve switching because valve is many, high and the insecure shortcoming of work of the probability that leaks out, design a kind of structure uniqueness, the motoring transfer valve that air-tightness is good, one valve pipe multicell, insert the characteristics of flat bag deduster according to the side, be designed to the radiation gas channels, corresponding one by one with the window on the revolution transfer valve valve body, when turning round a certain window of nozzle alignment of transfer valve, promptly be in back washing ecology again with this channel attached bag chamber, all the other each chambers are in the normal filtration attitude, and the revolution transfer valve whenever rotates a circle, and each the chamber filter bag on the radiation passage takes turns back washing deashing one time, in order to improve ash-removal effect, the ratchet mechanism form is adopted in the rotation of transfer valve, during every aligning one window of the nozzle of valve is arranged a duration, promptly realizes the about 10-30 of location long pulse winding-up second, valve blowback wind interface is connected with blower fan, sealing for the winding-up air channel that keeps transfer valve reduces air leak rate of air curtain, on transfer valve nozzle-end steel plate rubber packing material is installed.There is not the gas leakage crack between jet hole and window when making valve location jetting deashing.Be described further below in conjunction with accompanying drawing.

Accompanying drawing 1 is for location reverse gas cleaning device work schematic diagram is switched in the air-tightness revolution

Accompanying drawing 2 is air-tightness revolution switch valve structure schematic diagram

Accompanying drawing 3 is for air-tightness revolution transfer valve jet hole is installed the encapsulant schematic diagram

In the accompanying drawing 1: filter bag chamber 1,2 filter bags, cleaning chambers 3,4 back blowing machine interfaces, 5 revolution transfer valves, filter bag directly over the spout of revolution transfer valve is aimed in the diagram is in the clear grey state of blowback back washing, All the other each chambers are in the normal filtration state all around. In accompanying drawing 2: 1 transmission mechanism, 2 power transmission shafts, 3 blowback nozzles, 4 rubber seal, 5 valve bodies, 6 windows. With reference to the accompanying drawings 2, the blowback nozzle of valve and window switch on time in revolution, exist the gap, and this gap can affect the air-tightness of the blowback nozzle of valve, and part gas can be run out of from the gap. For guaranteeing not produce gas leak phenomenon between nozzle and the valve body, steel plate is installed rubber packing material around spout. Make so the whole air leak rate of air curtain of valve body be reduced to 0.001%, sealing rubber and spout steel plate connected mode are referring to accompanying drawing 3, among the figure: 1 transfer valve nozzle mouth steel plate, 2 bolts, 3 clamping plate, 4 sealing rubber, 5 viscose glues, 6 nuts are according to diagram, sealing rubber 4 adopted gummed and clamps the method that combines with being connected of transfer valve nozzle mouth steel plate 1, namely use viscose glue 5 bonding, push down with clamping plate 3 again, tighten up with bolt 2 and nut 6, with reference to the accompanying drawings 1, accompanying drawing 2, accompanying drawing 3, namely consist of the utility model.

Embodiment 1.Casting subsidiary factory of Shanghai xx steel mill, former employing DMLCDD pulse blowing bag type dust precipitator, the some months in service life of filter bag just surpasses discharging 500-1000mg/m3, inhale sand amount 10T/h, motor current 105-110A, and adopt side of the present utility model to insert flat bag deduster, operation is more than 2 years, concentration of emission 10mg/m3 inhales sand amount 12T/h, and efficient improves 20%, and motor current 80-90A, economize on electricity 25%, the air leak rate of air curtain of deduster is 1.26% only, service life of equipment is long.

Embodiment 2.XX mining machinery plant, regenerating used is inhaled and is sent the former use RB-of deduster system III type locellus flat bag deduster, adopts triple valve to switch old-fashioned deashing device, cause switching not in place, the short circuit of air-flow bypass makes a large amount of contrary gaseous blasts enter deduster, air leak rate of air curtain is up to 35-50%, inhale sand amount 6T/h, motor current 145A, and after adopting the utility model deashing device, inhale sand amount 14T/h, motor current 95A, system's air leak rate of air curtain is less than 1.5%, and is reliable for a long time.

Claims (2)

1, a kind of sack cleaner of forming by filter bag chamber, filter bag, clean room, back blowing machine interface, deashing transfer valve, its deashing transfer valve is an air-tightness revolution transfer valve, valve arrangement is by motor-driven ratchet mechanism 1, drive 3 revolutions of blowback nozzle by power transmission shaft 2, the each commentaries on classics when fixing on switching position, jet hole 3 is aimed at the window 6 of valve body 5.Window 6 is corresponding one by one with the radiation gas channels, it is characterized in that turning round transfer valve jet hole 3 and is connected with rubber seal 4.

2, air-tightness according to claim 1 revolution transfer valve, what it is characterized in that jet hole rubber seal 4 and jet hole steel plate 1 is connected usefulness viscose glue 5, tightens up with clamping plate 3 and bolt 2 and nut 6 again.

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