mw-n-113脈動微振袋式除塵器畢業論文(已改無錯字)

　　

【正文】 ng controller and so on. (1) Box body 27 Box body is mainly used to fix cage, filter bag and air passage ponents, made into whole close from. Compressed air enters into box body first, and crushes inside of the filter bag while collector is dedusting. Box body is made into degree inclined plane, that can be prevented from seeper when used in the open air. There’s a door where someone can examine and repair on the top, installing and replacing cage, filter bag are all done here, that is very convenient. According to the difference of specification, box body is divided into some partments separated by armor plate between them and impermeable by air, offline dedusting will e true. There’s a lift valve in each partment, which breaks and filtrate smoke current of air. （ 2） Bag partment Bag partment is in the below of the box body, mainly used to contain cage and filter bag and from a filtration space, cleaning of smoke is mostly done here. Like the box body, according to the difference of specification, bag partment is divided into some partments separated by armor plate between them and prevented from disturbing, at the same time it forms one sedimentation space. There’s a leaked explosive hole on the wainscot of each partment, the number of leaked explosive hole is 8. Coal preparation equipment, there’re some coal fines produced in the process of coal preparation, but concentration of coal fine is far less than 65g/m3, so collector must not set leaked explosive holes. Even so, the filter bag should adopt antistatic filter material. You set leaked explosive hole whose area is according to the structure of wainscot position. Choose the material whose thickness is equal to 1 mm L2M anneal industrial pure aluminum plank, 28 and the antipulls strength of industrial pure aluminum plank is 60Mpa, pared with the antipulls strength that is not less than 375Mpa of the carbon structure steel wall plank that the thickness is equal to 4 mm. The leaked explosive hole can ensure that dust collector operates in a safe condition. （ 3） Dust store bin Dust store bin is below of the bag partment, used to store collected dust. Dustladen gas enter into dust store bin first before into bag partment, that the speed of gas falls and the direction of current. （ 4） Wind inlet and outlet There are two kinds of wind inlet and outlet according to the structure of the duster. The wind inlet of the 32 series is a cylinder type, and is directly welded on the lateral plate of the dust store bin. The wind outlet is in the bottom, at the side of the bag partment, connected with inner side of the bag partment by the plate hole of the lift valve to, other series of wind inlet and outlet are made into to a whole, put on the side of the bag partment. The bag partment is separated two parts from the dust store bin by a slant board, with one part as the inlet and the other outlet. Though this structure is of a big volume, the air is evenly distributed, with a good effect, and suitable for occasions where dustladen gas is of a great concentration. 2 Working principle of plenum pulse bag type collector When dustladen gas enters the dust store bin from the inlet, some heavier dust drops into the dust store bin as a result of habitual collision and free settling, large amount of dust follow the rising air current and enter into the inside of bag partment. Dust is detained outside the filter bag after being filtered by filter 29 bags, and the purified gas goes into the bag partment from inside the filter bag, then discharged into the air through the hole of the valve board and the outlet. As it goes on and on, the dust detained outside the filter bag increases, so it causes operating resistance of dust collector rising. If the resistance rises to the preset number(1245－ 1470Pa), the controller will send out signals, first to control the lift valve to do these operations: close the hole of the valve board to cut air current and stop filtering, and then to open the electromagic pulse valve to blow pressed air whose pressure is into filter bag with a short time(－ ). The pressed air immediately expands and swarms into filter bag, that make the bag to distort and vibrate, adding the effect of adverse air current, the dust detained outside of filter bag is dropped into the dust store bin. After the dedusting is finished, lift valve open again, and dust collector begin filtering once more. Plenum pulse bag type collector is made up of several partments, where dedusting is in order, and this is partmentbypartment offline dedusting. Its advantages are that the dedusting partment and the filtering partment do not interfere each other, help realizing longterm consecutive operating and improve dedusting effect. Dust collector using pursetype filter cloth 2 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 27. A preferred embodiment of the present invention is constructed so that mixed current containing dust is sucked into the filtering/dust collecting area through the top of the housing to remove fine solid material such as dust, and then purity air is discharged from the bottom of the housing. 30 In pursetype filter cloth 11 shown in FIG. 3, an important ponent of the present invention, retainers 12 of metal are installed in stack according to the vertical length of the pursetype filter cloth, as shown in FIGS. 5 and 6. According to this design, in order to increase the filtering area, the arrangement of the retainers is continuous not intermittent, and in turn the purging area of filtered clean air (purity air) increases in the respective units. Pursetype filter cloth 11 employed into the dust collector of the present invention are divided into various areas as