CN201519527U - A high concentration bag filter - Google Patents

Abstract

The utility model discloses a high-concentration bag-type dust collector, which comprises a shell, a filter bag, a cage frame, an ash hopper and a blow-back cleaning device, the ash hopper is arranged at the bottom of the shell, and the filter bag is set on the cage frame , the upper end of the cage is set on the flower plate on the upper part of the shell, the anti-blowing dust cleaning device includes a pulse valve, an air storage tank, and a blowing pipe, and one end of the blowing pipe is set in the air storage tank and arranged on the tank. The pulse valve is connected, the inner and lower part of the housing is provided with an air duct, the air duct is provided with an air outlet, the upper part of the ash hopper is provided with an air inlet, and the reverse blowing ash cleaning device also includes a venturi tube, The deflector, the upper end of the venturi tube is arranged on the flower plate, the lower end is arranged on the air duct, the deflector is located above the upper end of the venturi tube, and the other end of the blowing pipe passes through the air duct And it is located at the inner lower end of the Venturi tube. The dust collector is convenient for maintenance of the filter bag.

Description

A high concentration bag filter

technical field

The utility model relates to a high-concentration bag type dust collector.

Background technique

An existing high-concentration bag filter mainly includes a shell, a filter bag, an ash hopper and a back-blowing ash cleaning device. The anti-blowing dust cleaning device mainly includes a pulse valve, an air storage tank, a nozzle, a blowing pipe and a blowing pipe fixing device. The nozzles are arranged in the lower part of the blowing pipe in turn. Associated with the pulse valve on the tank. The filter bag is set on the cage frame, which is a cylindrical steel mesh frame structure, and its upper part is set on the flower plate provided on the upper part of the shell. Several nozzles arranged at the lower part of the blowing pipe are located directly above the corresponding upper port of the filter bag, and the blowing pipe is installed on its fixing device, which is fixed on the flower plate. Since the blowing pipe is located directly above the upper port of the filter bag, when one of the several filter bags under the blowing pipe wears or breaks down and needs to be taken out for maintenance, the blowing pipe must first be disassembled from its fixing device. , and then the filter bag can be taken out from the flower plate, so the maintenance of the filter bag is very troublesome.

Utility model content

The technical problem to be solved by the utility model is to provide a high-concentration bag-type dust collector, which is convenient for maintenance of filter bags.

In order to solve the above technical problems, the utility model is a high-concentration bag filter, which includes a shell, a filter bag, a cage frame, an ash hopper and a back-blowing ash cleaning device. The ash hopper is arranged at the bottom of the shell, and the filter bag is set On the cage frame, the upper end of the cage frame is set on the flower plate provided on the upper part of the shell, and the anti-blowing dust cleaning device includes a pulse valve, an air storage tank, and a blowing pipe, and one end of the blowing pipe is set in the air storage tank The pulse valve on the tank is connected, the inner and lower part of the housing is provided with an air duct, the air duct is provided with an air outlet, the upper part of the ash hopper is provided with an air inlet, and the reverse blowing dust cleaning device also contains Venturi tube and deflector, the upper end of the venturi tube is set on the flower plate, the lower end is set on the air duct, the deflector is located above the upper end of the venturi tube, and the other end of the blowing pipe passes through The air duct is located at the inner lower end of the venturi tube.

Since the compressed air provided by the air storage tank of the anti-blowing dust cleaning device is sprayed out from the blowing pipe, and quickly enters the upper port of the filter bag through the Venturi tube and the deflector, the strong back-blowing force makes the original compressed filter bag The bag expands and deforms, and the dust attached to its outer surface is removed. Compared with the existing technology, because the blowing pipe is not above the upper port of the filter bag, when the filter bag is worn out or malfunctions, it can be taken out from the flower plate for maintenance in time, thus overcoming the need to remove the blowing pipe in the prior art After it is disassembled from its fixing device, the filter bag can be taken out from the flower plate for maintenance. Therefore, the improved dust collector is very convenient for the maintenance of the filter bag.

Description of drawings

Figure 1 is a schematic structural view of a high-concentration bag filter of the present invention.

In the figure 1. Air duct, 2. Air outlet, 3. Injection pipe, 4. Air storage tank, 5. Pulse valve, 6. Filter bag, 7. Venturi tube, 8, shell, 9. Flower plate, 10 . Deflector, 11. Rack, 12. Ash bucket, 13. Air inlet.

Detailed ways

In Fig. 1, a high-concentration bag filter of the present invention includes a housing 8, a filter bag 6, a cage frame, an ash hopper 12 and a blow-back cleaning device. The ash hopper 12 is arranged on the bottom of the casing 8 , and the bottom of the casing 8 is arranged on the frame 11 . The filter bag 6 is set on the cage frame, and the upper end of the cage frame is arranged on the flower plate 9 provided on the inner upper part of the housing 8 . The anti-blowing dust cleaning device includes a pulse valve 5, an air storage tank 4, and a blowing pipe 3. One end of the spray pipe 3 is arranged in the gas storage tank 4 and is connected with the pulse valve 5 arranged on the tank. An air duct 1 is provided at the inner lower part of the casing 8 , and an air outlet 2 is provided on the air duct 1 . The upper part of the ash hopper 12 is provided with an air inlet 13 . The anti-blowing dust cleaning device also includes a venturi tube 7 and a deflector 10. The upper end of the venturi tube 7 is arranged on the flower plate 9 , and the lower end thereof is arranged on the air duct 1 . The deflector 10 is located above the upper end of the venturi tube 7 . The other end of the spray pipe 3 passes through the air channel 1 and is located at the inner lower end of the venturi tube 7 . When working, the dust-containing gas enters the ash hopper 12 through the air inlet 13, collides with the inner surface of the ash hopper 12, changes the direction of movement and moves upward into the housing 8, and the dust-containing gas entering the housing 8 is blocked by dust. Stay on the outer surface of the filter bag 6 to purify the dusty gas. The purified gas enters the air duct 1 from the filter bag 6 through the 9 flower plate and the Venturi tube 7, and is discharged into the atmosphere from the air outlet 2 of the air duct 1 through the external exhaust fan. When the running resistance of the dust collector increases to a certain value, the back-blowing and dust-cleaning device works, and the compressed air provided by the air storage tank 4 is sprayed out from the blowing pipe 3, and is quickly discharged from the filter bag 6 through the venturi tube 7 and the deflector 10. When the upper port enters the filter bag 6, the strong back blowing force causes the compressed filter bag 6 to expand and deform, and the dust attached to the outer surface of the filter bag 6 is removed, and the cleaned dust falls into the ash hopper 12. The dust falling into the ash hopper 12 is discharged out of the machine through the ash discharge device arranged at the bottom of the ash hopper 12 . Compared with the prior art, because the blowing pipe 3 is not above the upper port of the filter bag 6, when the filter bag 6 wears or breaks down, it can be taken out from the flower plate 9 for maintenance in time, thus overcoming the existing Technology firstly needs to disassemble the blowing pipe 3 from its fixing device before taking out the filter bag 6 from the flower plate 9 for overhauling. Therefore, the improved dust collector is very convenient for the maintenance of the filter bag 6.

Claims (1)

1. A high-concentration bag filter, which includes a shell, a filter bag, a cage frame, an ash hopper and a blow-back cleaning device. The ash hopper is set at the bottom of the shell, the filter bag is set on the cage frame, and the cage frame The upper end of the blower is set on the flower plate on the upper part of the shell. The anti-blowing dust cleaning device includes a pulse valve, an air storage tank, and a blowing pipe. One end of the blowing pipe is set in the air storage tank and connected to the pulse valve on the tank. It is characterized in that: the inner and lower part of the housing is provided with an air duct, the air duct is provided with an air outlet, the upper part of the ash hopper is provided with an air inlet, and the blowback cleaning device also includes a venturi tube , deflector, the upper end of the venturi tube is set on the flower plate, the lower end is set on the air duct, the deflector is located above the upper end of the venturi tube, the other end of the blowing pipe passes through the air duct Road and located at the inner lower end of the Venturi tube.

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