CN2912767Y

CN2912767Y - Cloth bag dust remover

Info

Publication number: CN2912767Y
Application number: CN 200620118052
Authority: CN
Inventors: 胡湧; 宋晓霞
Original assignee: SHANXI FEIDA HUAXIN ENVIRONMENT PROTECTION TECHNOLOGY Co Ltd
Current assignee: SHANXI FEIDA HUAXIN ENVIRONMENT PROTECTION TECHNOLOGY Co Ltd
Priority date: 2006-06-08
Filing date: 2006-06-08
Publication date: 2007-06-20
Anticipated expiration: 2016-06-08

Abstract

The utility model relates to a bag-type dust collector comprising a case body on sides of which is provided with an air intake and an air outlet respectively. Inside the case body are installed grid and filter made by filtrating bag, and the filter forms air purifying chamber with top surface of the case body. Air channels are arranged on the air incoming part, the lower part and the middle part of the filter. Damp wind distribution plate is installed inside the air intake. Clapboard is positioned vertically on the air incoming end of the case body close to the filtrating bag. Baffle-board is installed between the damp wind distribution board and the clapboard. A plurality of ventholes are positioned on the damp wind distribution board, sides and middle of the baffle-board. After tested, the utility model reduces 300Pa of running resistance of the dust collector from 1500-1800Pa, saves 10-15% of power consumption and extends the service life of the filtrating bag.

Description

Sack cleaner

Technical field

The utility model relates to a kind of deduster, is the treatment facility that is widely used in dust-laden exhaust gas environment such as thermal power plant, cement plant specifically.

Background technology

In the combustion apparatus such as thermal power plant, cement plant, electrostatic precipitator and cloth-bag type pulse dust collector are used in the processing of dust-laden exhaust gas widely, wherein the cloth-bag type pulse dust collector comprises casing and the filter bag of installing in casing, be installed in injection system and pulse-control system on the casing, and the adjusting valve in the air outlet etc.Enter that oarse-grained slightly high temperature powder directly falls into ash bucket in the dust-laden exhaust gas in the casing, under the adjusting of adjusting valve, contain micronic dust waste gas and enter the filter chamber that is covered with filter bag by lower box, filtration by large-area filter bag, micronic dust is trapped on the outer surface of filter bag, the waste gas after filter bag filters is discharged through air outlet from casing top.(generally all reach 1500～1800Pa), because air-flow is fast in the speed of service of box house, resistance is big so the power consumption of cleaner operation is higher.Again because adjusting valve outlet wind speed is higher, very easily cause reentrainment of dust during following air intake, increased the dust content in the waste gas, obviously strengthened operating load again.

The utility model content

The technical problems to be solved in the utility model provides and a kind ofly can reduce running resistance effectively, prevents that reentrainment of dust from producing the sack cleaner of dirt, thereby reaches the purpose of saving power consumption.

The utility model sack cleaner, comprise that two ends are respectively equipped with the casing of air inlet and air outlet, filter is housed in casing, this device comprises card and several filter bags of vertically laying, fixedly connected with even through hole arranged evenly on the card respectively in each filter bag upper end, the card that level is laid is connected with the sealing of casing top, and constitutes air-purifying chamber with box top, the air inlet side of filter, below and the middle gas channel that forms; Wherein air inlet comprises the conical shell that is connected as a single entity with casing one end, in conical shell, be provided with the damping homogenating plate along the orthogonal direction of air inlet axis, this plate periphery is connected with the conical shell sealing, has several passages on the plate face evenly distributedly; In casing air intake next-door neighbour filter bag part, vertically be provided with dividing plate, the lower end of dividing plate is unsettled, and all the other each limits all are connected and fixed with cabinet wall, also have several passages evenly distributedly on the vertical direction of the dual side-edge of dividing plate and middle part.

The utility model sack cleaner, wherein between damping homogenating plate and dividing plate, arrange and the some reflecting plates that fixedly connected with housing in two ends, horizontal direction is laid with being provided with in the corresponding scope of dividing plate vertically, and reflecting plate has downward-sloping bending edges.

The utility model sack cleaner, the gas channel in the dividing plate middle part, in the middle of the filter wherein, vertical direction is provided with two wind deflectors symmetrically.

The utility model sack cleaner, be that equal wind apparatus of damping and Air System are set at the air inlet place, the area that waste gas stream passes through has increased nearly 10 times, and air velocity is dropped to less than 1 meter per second, because air velocity is lower, and be evenly distributed, the concentration of dust-laden exhaust gas is significantly descended, and has suppressed the generation of reentrainment of dust effectively, makes by dust concentration in the waste gas of filter bag to reduce greatly, in the same pulse period, reduce filtration resistance, improve the service life of filter bag.After tested, the running resistance of deduster is reduced to 1200～1500Pa from 1500～1800Pa, has reduced 300Pa, also saves power consumption 10～15%, has also prolonged the service life of filter bag.

Description of drawings

Fig. 1 is the utility model sack cleaner principles of construction schematic diagram (casing is a section);

Fig. 2 is the A-A generalized section of Fig. 1;

Fig. 3 is the B-B generalized section of Fig. 1.

The specific embodiment

By Fig. 1～Fig. 3 as seen, the utility model sack cleaner comprises that two ends are respectively equipped with the casing 3 of air inlet 1 and air outlet 2, wherein air inlet 1 comprises the conical shell 10 that is connected as a single entity with casing 3 one ends, in conical shell 10, be provided with damping homogenating plate 11 along the orthogonal direction of air inlet 1 axis, be connected with conical shell 10 sealings around this plate, have several passages on the plate face evenly distributedly, constitute the equal wind system of one-level damping, after dust-contained airflow passed through, air velocity dropped to below the 1m/s.Again through vertically arranging and the pre-sedimentation system of some downward-sloping bending reflecting plates 13 formations that fixedly connected with housing 10 in two ends, horizontal direction is laid, make oarse-grained slightly high-temperature dust in the dust-contained airflow be subjected to the resistance shelves of reflecting plate 13, directly fall into following ash bucket 9.In casing 3, filter is housed, this device comprises several filter bags vertically laid 4 and card 5, and fixed support, fixedly connected with even through hole arranged evenly on the card 5 respectively in each filter bag 4 upper end, the card 5 that level is laid is connected with the sealing of casing 3 tops, and constitute air-purifying chamber 6 with casing 3 end faces, promptly the middle and lower part of casing 3 is communicated with the air-purifying chamber 6 on top by filter bag 4.The air inlet side of filter, below and the middle gas channel that forms, the air-flow that contains micronic dust is under the guiding of dividing plate 12, and major part enters air-purifying chamber 6 from bottom to top after filter bag 4 filters; Another part is by the equal wind system of secondary damping that passage constituted in dividing plate 12 dual-sides and centre, enters air-purifying chamber 6 after filter bag 4 filters, after air-out passage 7 and go out air-valve 8 discharge from air outlet 2.

When filter bag 4 surface dusts reached certain thickness, control system was sent the deashing instruction, and blowing device 15 and the pulse valve 16 of compressed air by being installed in casing 3 tops carries out online ash removal to filter bag 4.The filter stick that filter bag 4 is made for fibers material.When cloth bag ash bucket 9 was filled dust, the vibrator effect by mounted thereto drew off dust.

The utility model is in a generating set is implemented to handle, and through environmental administration's test, deduster import dust content is 46g/Nm ³, the concentration of outlet drops to 27mg/Nm ³, reach designing requirement.

Claims

1, a kind of sack cleaner, comprise that two ends are respectively equipped with the casing (3) of air inlet (1) and air outlet (2), in described casing (3), filter is housed, this device comprises card (5) and several filter bags of vertically laying (4), fixedly connected with the upward even through hole arranged evenly of described card (5) respectively in each described filter bag (4) upper end, the described card (5) that level is laid is connected with the sealing of described casing (3) top, and constitute air-purifying chamber (6) with described casing (3) end face, the air inlet side of filter, below and the middle gas channel that forms, it is characterized in that described air inlet (1) comprises the conical shell (10) that is connected as a single entity with described casing (3) one ends, in described conical shell (10), be provided with damping homogenating plate (11) along the orthogonal direction of described air inlet (1) axis, this plate periphery is connected with described conical shell (10) sealing, has several passages on the plate face evenly distributedly; Air intake at described casing (3) is close to described filter bag part, vertically be provided with dividing plate (12), the lower end of described dividing plate (12) is unsettled, all the other each limits all are connected and fixed with described casing (3) inwall, on the vertical direction of the dual side-edge of described dividing plate (12) and middle part, also have several passages evenly distributedly.

2, sack cleaner according to claim 1, it is characterized in that between described damping homogenating plate (11) and described dividing plate (12), arrange and two ends and the some reflecting plates (13) that described housing (10) is fixedlyed connected, horizontal direction is laid with being provided with in the corresponding scope of described dividing plate (12) vertically, and described reflecting plate (13) has downward-sloping bending edges.

3, sack cleaner according to claim 1 and 2 is characterized in that in described dividing plate (12) middle part, the gas channel in the middle of the filter that vertical direction is provided with two wind deflectors (14) symmetrically.