CN201676610U - Inner filter type large bag dust collector - Google Patents

Abstract

The utility model discloses an inner filter type large cloth bag dust collector, which includes a bag dust collector, anti-flat rings are evenly distributed in each filter bag, and an air inlet pipe is respectively connected to the side wall of each ash hopper. An air suction pipe is provided on the side corresponding to the air inlet pipe, an air suction valve is respectively arranged between the air suction pipe and each ash hopper, and an air inlet valve is respectively arranged between each air inlet pipe and the ash hoppers. It has the advantages of positive pressure dust removal, negative pressure dust removal, stable operation, high dust removal efficiency, and low operating cost. The purified gas meets the national emission standards.

Description

Inner filter type large bag dust collector

Technical field:

The utility model belongs to dust removal equipment, in particular to an inner filter type large bag dust collector suitable for metallurgy, chemical industry, building materials, grain processing, refractory materials and other industries.

Background technique:

The current bag filter is to install an induced draft fan behind the filter, and there is a filter bag frame in each filter bag. This kind of external filter bag filter filters the dust from the outside of the bag through the inside of the bag because of the gas contained in it. Dust filled the air, and the frame in the bag had to be pulled out, and then put into the frame, which required a lot of work.

Invention content:

The purpose of the utility model is to provide an internal filter type large bag dust collector with simple structure, convenient and clean replacement of filter bags, simplified dust cleaning mechanism and low operating cost.

The technical solution of the utility model is solved in the following way. It includes a bag filter, which is characterized in that: anti-flat rings are evenly distributed in each filter bag, and a wind inlet is respectively connected to the side wall of each ash hopper. There is a suction pipe on the side corresponding to the air inlet pipe, a suction valve is respectively arranged between the suction pipe and each ash hopper, and an air inlet valve is respectively arranged between each air inlet pipe and the ash hopper . The filter bags are arranged in single or double rows of multiple filter bag chambers. It has the advantages of positive pressure dust removal, negative pressure dust removal, stable operation, high dust removal efficiency, and low operating cost. The purified gas meets the national emission standards.

Description of drawings:

The accompanying drawing is a structural schematic diagram of the utility model when one filter bag chamber is in dust removal operation and the other filter bag chamber is in dust removal.

Detailed ways:

The utility model is an improvement on the prior art, mainly in that an anti-flat ring 11 is fixed horizontally and evenly on the inner wall of each filter bag 7 in the dust collector housing 9, and an outer wall of the ash hopper 6 under each filter bag chamber is respectively connected with a An air inlet pipe 1 is provided with an air suction pipe 5 on the corresponding side, an air suction valve 4 is respectively installed between the air suction pipe and each ash hopper, and an air suction valve 4 is respectively installed between each air intake pipe 1 and the ash hopper. An intake valve 2. Its working principle is that after the dust-laden gas enters the ash hopper through the air intake pipe, due to the sudden increase of the flow section, the flow velocity is greatly reduced, and the heavy dust automatically falls into the ash hopper, while the smaller dust enters the filter bag with the updraft and is captured. Blocked on the inner wall of each filter bag, the purified gas passes through the filter bag and is discharged into the atmosphere through the air outlet 10. When the dust layer on the inner wall of the filter bag gradually thickens to a certain resistance value, the dust cleaning mechanism automatically closes the intake valve of the ash hopper in the lower part of the first filter bag chamber 8, and opens the suction valve at the same time, and the air is sucked by the suction pipe. Each filter bag in the first filter bag chamber changes from expansion to contraction, so that the dust layer on the inner wall is peeled off, falls into the ash hopper, and is discharged through the ash discharge port 3. After the set time is reached, the suction valve is automatically closed. Open the intake valve, and the first filter bag chamber returns to the normal filtering state. Then clean the next filter bag room, repeat this method, and gradually complete the cleaning operation of each filter bag room.

Claims (2)

1. Inner filter type large bag dust collector, which includes a bag dust collector, is characterized in that: there are anti-flat rings evenly distributed in each filter bag, and an air inlet pipe is connected to the side wall of each ash hopper, which is connected with An air suction pipe is provided on the side corresponding to the air inlet pipe, an air suction valve is respectively arranged between the air suction pipe and each ash hopper, and an air inlet valve is respectively arranged between each air inlet pipe and the ash hoppers. 2. The inner filter type large bag dust collector according to claim 1, characterized in that: the filter bags are arranged in a single or double row of multiple filter bag rooms.