CN201394397Y - Low pressure long bag filter - Google Patents

Abstract

The utility model discloses a low-pressure long cloth bag dust collector, which comprises a shell, a filter bag, an ash hopper, and ash cleaning device. The two sides inside the shell are dust removal chambers. The upper end of the upper part is set on the upper flower plate, and the part between the dust removal chambers on both sides of the shell is divided into upper and lower chambers by the sloping plate in the middle. The upper chamber is the air outlet chamber, which is connected with the air outlet on the rear end of the casing. The ash hopper is arranged at the bottom of the casing and also contains a flow guide device, which consists of a main flow guide plate and a secondary flow guide. The main deflector is an arc-shaped plate, the main deflector is arranged below the bottom ends on both sides of the air intake chamber, and the secondary deflector is arranged between the main deflectors. The utility model has higher dust removal efficiency.

Description

Low pressure long bag filter

technical field

The utility model relates to a low-pressure long bag filter.

Background technique

The existing low-pressure long bag filter mainly includes a shell, a filter bag, an ash hopper, and an ash cleaning device. The two sides inside the housing are dust removal chambers, the upper part of which is provided with an upper flower plate, the upper end of the filter bag is arranged on the upper flower plate, and the upper part of the upper flower plate is a clean air chamber. The part between the dust removal chambers on both sides of the shell is divided into upper and lower chambers by a sloping plate in the middle. The lower chamber is an air inlet chamber, which is connected with the air inlet on the front end of the housing, and the upper chamber is an air outlet chamber, which is connected with the air outlet on the rear end of the housing. The ash hopper is set at the bottom of the shell, and the dust cleaning device is set at the top of the shell. When working, after the dust-laden gas enters the air intake chamber from the air inlet, it moves downward from the air intake chamber and enters the bottom of the ash hopper, collides with it, changes its direction of movement and enters the dust removal chambers on both sides of the shell, and moves upward The dust in the dusty gas is blocked outside the filter bag to purify the dusty gas. The purified gas enters the clean air chamber from the filter bag through the upper flower plate, and then is discharged from the air outlet chamber by the exhaust fan from the air outlet. Since the dust-laden gas located in the lower part of the two sides of the air intake chamber moves upwards directly due to a short circuit after leaving the air intake chamber, the dust concentration of this part of the dust-laden gas is relatively high, so that the air near the two sides of the air intake chamber The load on the filter bag increases, resulting in uneven load on each filter bag, which reduces the dust removal efficiency of the dust collector.

Utility model content

The technical problem to be solved by the utility model is to provide a low-pressure long bag dust collector with high dust removal efficiency.

In order to solve the above-mentioned technical problems, the utility model is a low-pressure long bag dust collector, which includes a shell, a filter bag, an ash hopper, and a dust-cleaning device. The upper end of the filter bag is set on the upper flower plate, and the part between the dust removal chambers on both sides of the shell is divided into upper and lower chambers by the inclined plate in the middle. The lower chamber is the air intake chamber and the chamber. It is connected with the air inlet on the front face of the shell, the upper chamber is the air outlet chamber, which is connected with the air outlet on the rear end face of the shell, the ash hopper is set at the bottom of the shell, and also contains a flow guide device, which is composed of a main deflector It is composed of auxiliary deflectors, the main deflector is an arc-shaped plate, the main deflector is arranged below the bottom ends on both sides of the air intake chamber, and the auxiliary deflectors are arranged between the main deflectors.

Since there is a guide device under the air intake chamber, the dust-containing gas located at the lower part of both sides of the air intake chamber is forced to pass through the gap between the main guide plate, the secondary guide plate and the cone surface of the ash hopper of the guide device. Therefore, the particle dust in this part of the dust-laden gas collides with the cone surface of the ash hopper, loses kinetic energy and stays at the bottom of the ash hopper, reducing the concentration of the dust-laden gas, which overcomes the direct upward movement of the dust-laden gas in the prior art due to short circuit It is not enough to increase the load of the filter bags near the air inlet chamber, so that the load of each filter bag is even, which greatly improves the dust removal efficiency of the dust collector.

Description of drawings

The accompanying drawing is a structural schematic diagram of the utility model low pressure long bag filter.

In the attached drawings 1. Bracket, 2. Air outlet chamber, 3. Ash hopper, 4. Main deflector, 5. Secondary deflector, 6. Shell, 7. Air intake chamber, 8. Clean air chamber, 9. Dust removal Chamber, 10. Filter bag, 11. Air storage tank, 12. Pulse valve, 13. Nozzle tube, 14. Nozzle.

Detailed ways

In the accompanying drawings, the low-pressure long bag filter includes a housing 6, a filter bag 10, an ash hopper 3 and a cleaning device. The shell 6 is set on the bracket 1, and the two sides inside the shell 6 are dust removal chambers 9, and its upper part is provided with an upper flower plate, and the upper end of the filter bag 10 is set on the upper flower plate, and the upper part of the upper flower plate is the clean air Room 8. The portion between the dust-removing chambers 9 on both sides of the housing 6 is divided into upper and lower chambers by a slant plate located in the middle, and the lower chamber is the air inlet chamber 7, the air inlet between this chamber and the front surface of the housing 6 The upper chamber is the air outlet chamber 2, which is connected with the air outlet on the rear end surface of the housing 6, and the ash hopper 3 is arranged at the bottom of the housing 6. The cleaning device is composed of a pulse valve 12 , an air storage tank 11 , a nozzle pipe 13 and a nozzle 14 . The nozzle 14 is arranged on the nozzle pipe 13, and the gas storage tank 11 is arranged on the top of the housing 6, and one end of the nozzle pipe 13 is arranged in the gas storage tank 11 and is connected with the pulse valve 12 arranged on the tank, and the nozzle pipe 13 The other end of the filter bag is located in the clean air chamber 8, and the nozzle 14 on it is located above the upper opening of the filter bag 10. The low-pressure long bag filter also includes a guide device, which is composed of a main guide plate 4 and a secondary guide plate 5. The main guide plate 4 is an arc-shaped plate, and the main guide plate 4 is arranged below the bottom ends of both sides of the air inlet chamber 7. , the secondary deflector 5 is arranged between the main deflectors 4 . During work, the dust-containing gas enters the air intake chamber 7 from the air inlet, and under the guidance of the main guide plate 4 and the secondary guide 5 of the deflector, the dust-laden gas enters the ash hopper 3 from the air intake chamber 7 and is mixed with the dust The bottoms of the buckets 3 collide with each other and change the direction of movement to move upwards, entering the dust removal chambers 9 on both sides of the housing 6, and the dust in the upwardly moving dust-containing gas stays outside the filter bag 10, and the dust-containing gas is purified . The purified gas enters the clean air chamber 8 from the inner surface of the filter bag 10 through the upper flower plate, and then is discharged from the air outlet chamber 2 by the exhaust fan from the air outlet. When the running resistance of the dust collector increases to a certain value, the pulse valve 12 of the dust cleaning device is opened, and the compressed air is sprayed into the filter bag 10 from the nozzle 14, so that the original compressed filter bag 10 is expanded and deformed, and the filter bag 10 is removed. The dust attached to the outer surface and the cleaned dust fall in the ash hopper 3 . After cleaning the dust, the pulse valve 12 is closed, and the dust removal state can be resumed.

Claims (1)

1. A low-pressure long bag filter, which contains a shell, a filter bag, an ash hopper, and a dust removal device. The two sides inside the shell are dust removal chambers. On the upper flower plate, the part between the dust removal chambers on both sides of the shell is divided into upper and lower chambers by the inclined plate in the middle. The air outlets are connected, the upper chamber is an air outlet chamber, and this chamber is connected with the air outlet on the rear end of the casing. The baffle is composed of a main baffle, which is an arc-shaped plate, and the main baffle is arranged below the bottom ends on both sides of the air inlet chamber, and the secondary baffles are arranged between the main baffles.