CN201664549U - Rotary low pressure air volume pulse bag filter - Google Patents

Abstract

The utility model relates to a rotary low-pressure large-capacity pulse bag-type dust collector, which comprises a machine case, a clean air chamber, an ash hopper, a flower plate between the top of the machine case and the clean air chamber, and multi- The chassis is equipped with a flue gas inlet and a net flue gas outlet of the clean air chamber. Above the filter bag bundle is a dust removal assembly consisting of a pulse valve, an air storage tank, a rotating air pipe and a horizontal injection branch pipe. Said air pipe is connected with the rotating motor and the reducer so as to drive the horizontal blowing branch pipe to rotate together. The horizontal blowing branch pipe sprays pulsed compressed air in a rotating state, and each group of filter bag bundles only needs to be equipped with a corresponding pulse cleaning component to complete the cleaning of all filter bags on the flower plate. It is easy to install and maintain, and has a compact structure. , saving material. This bag type dust collector can compactly set multiple filter bag bundles fixed by flower plates in the same box, which can be used for flue gas dust removal with large flow rate, low energy consumption, high efficiency, and reduced dust removal cost.

Description

Rotary low pressure air volume pulse bag filter

technical field

The utility model relates to a bag-type dedusting device, in particular to a rotary low-pressure large-volume pulse bag-type dedusting device, which belongs to gas-solid separation equipment.

Background technique

The bag filter is used for flue gas purification in industries such as electric power, cement, metallurgy, waste incineration, and building materials. The dusty gas is filtered through the filter bag, and the dust in the flue gas is blocked outside the filter bag, and the dust is blown off by the dust cleaning system. Into the ash hopper, the clean flue gas passes through the filter bag, and is discharged into the atmosphere through the clean air chamber. At present, the bag-type dust removal equipment is equipped with a fixed back-blowing and dust-cleaning air pipe on the top of the filter bag. Each back-blowing pipe is controlled by a small pulse valve, and the blowing capacity is low, so it can only be used for shorter filter bags. , so the entire dust removal equipment needs to be equipped with a large number of anti-blow pipes and pulse valves, ranging from dozens to hundreds, resulting in high steel consumption, high cost, and cumbersome maintenance work. The cost of flue gas dust removal is greatly increased. In recent years, with the rapid economic growth, the scale of power plants and other enterprises has continued to expand, and the amount of smoke exhaust has also increased sharply. Conventional bag-type dust removal equipment has low dust removal efficiency, high energy consumption, and very large equipment volume, which can no longer adapt to the needs of large enterprises. Flue gas dust removal treatment.

Contents of the invention

The purpose of this utility model is to provide a rotary low-pressure large-volume pulse bag dust collector, which can improve dust removal efficiency, reduce equipment volume, reduce energy consumption and save investment through optimized design. cut costs.

The bag-type dust collector of the utility model includes a chassis, a clean air chamber, an ash hopper, a flower plate and a plurality of filter bags arranged on the flower plate and arranged in bundles. The clean flue gas exits the bell mouth, and above the filter bag bundle is a dust cleaning assembly consisting of a pulse valve, an air storage tank, an air pipe and a horizontal injection branch pipe. The air pipe is connected with a rotating motor and a reducer. Drive the horizontal injection branch pipe to rotate together.

There are multiple flower plates on the top of the same box, and each flower plate is equipped with a filter bag bundle and equipped with a set of dust removal components.

The box is divided into multiple channels by partitions, and each channel is arranged with multiple flower plates in turn, and each flower plate is equipped with multiple filter bags arranged in bundles.

Said air intake bell mouth and air outlet bell mouth are respectively arranged horizontally on both sides of the box body.

The flue gas inlet bell mouth is provided with a porous air flow plate or a strip air flow plate.

Said horizontal injection branch pipe comprises 3 to 4 branch pipes, and each branch pipe is equipped with a plurality of nozzles.

Wear-resistant support bearings are installed at the bottom of the rotating air duct.

The mouth of the filter bag is oblate, and the filter bags on each flower board are arranged in a circle with the mouth of the bag and fixed on the flower board.

The bag type dust collector of the utility model adopts a rotating air pipe and a horizontal blowing branch pipe, that is, the position of the nozzle above the filter bag bundle is continuously changed with the rotation of the horizontal branch pipe, so that the compressed air sprayed out can be uniform. It reaches each filter bag of the filter bag bundle, and blows the dust attached to the outer wall of the bag into the ash hopper; therefore, only one set of dust removal components is needed above each flower plate, that is, a rotary wind blower controlled by a pulse valve. The pipe and its matching horizontal blowing pipe can complete the cleaning operation of all the filter bags (up to thousands of filter bags) on the flower plate. It is greatly simplified, saves materials, and is convenient for installation and maintenance. This bag type dust collector can compactly set multiple flower plates and the corresponding filter bag bundles in the same box, and adopts a large pulse valve, which can be equipped with extended filter bags, which is suitable for dust removal of extremely large flow of flue gas. It has a compact structure and low energy consumption. Low power consumption, high efficiency, saving equipment investment and reducing dust removal costs.

Description of drawings

Figure 1 is a schematic diagram of the structure of the rotary low-pressure large-volume pulse bag filter.

Fig. 2 is a view along the direction A of Fig. 1 .

Fig. 3 is a schematic diagram of the structure of the horizontal injection branch pipe.

Fig. 4 is a schematic diagram of the air distribution plate.

In the figure: 1 is the bracket, 2 is the air inlet bell mouth, 3 is the air distribution plate, 4 is the shell, 5 is the flue gas chamber, 6 is the clean air chamber, 7 is the ash hopper, 8 is the air outlet bell mouth, 9 is Filter bag bundle, 10 is the rotating air duct, 11 is the flower plate, 12 is the air storage tank, 13 is the platform stairs, 14 is the top ventilation hole, 15 is the super large pulse valve, 16 is the horizontal injection branch pipe, 17 is the nozzle , 18 is a rotating electrical machine, 19 is a speed reducer, 20 is a support bearing, and 21 is a partition wall.

Detailed ways

The rotary low-pressure large-volume pulse bag filter of this embodiment is shown in Figure 1. The lower end of the rotary air duct 10 is provided with a horizontal injection branch pipe 16, and the upper end is connected to the top air storage tank 12. The top of the air storage tank 12 is equipped with a super large pulse blower. valve 15. The dust-laden gas enters the intake bell mouth 2, and enters the flue gas chamber 5 through the reasonable distribution of the air distribution plate 3; the filter bag bundle 9 suspended on the flower plate 11 acts as a filter to block the dust on the outer surface of the filter bag; When cleaning the filter bag, start the motor 18. Driven by the rotating motor 18, the rotating air pipe 10 and the horizontal injection branch pipe 16 rotate together, and the nozzle 17 moves in a circle with the horizontal injection branch pipe 16. The compressed air forms a pulse through the super-large pulse valve 15, and the pulse air is blown into the filter bag from the nozzle 17, blowing air on the filter bags arranged in a circle, causing the filter bag to bulge and deform, and blowing the dust attached to the outside of the filter bag into the filter bag. Ash hopper 7, the clean flue gas after dust removal enters the filter bag, rises from the mouth of the bag to the clean air chamber 6, and is discharged from the dust collector from the outlet bell mouth 8 of the clean air chamber 6 to achieve the purpose of dust removal. Compressed air is constantly filled in the top air storage tank 12, stored in the air storage tank, and waits for the next cleaning.

Figure 2 shows that the inside of the box body 4 is divided into two channels by a partition wall 21, and a plurality of flower plates 11 are arranged on the top of each channel, and the filter bags are fixed on the flower plates 11 in a circular arrangement with oblate pockets (the bag in the figure The arrangement of the mouth is omitted). The two channels are separated, which is convenient for online isolation and maintenance. Fig. 2 also shows that the top of each flower plate 11 is provided with a horizontal injection branch pipe 16, and in this example, each horizontal injection branch pipe contains 3 branch pipes.

Figures 1 and 2 show that the large bag filter is provided with a platform staircase 13, and the operator can only reach the top of the bag filter equipment through the platform staircase 13.

Figure 3 shows the horizontal blowing branch pipe, each horizontal rotating air pipe is equipped with four arms, and each cantilever has multiple nozzles, which rotate and spray with the air pipe 10, and at least 50 filter bags can be cleaned at one time .

Figure 4 shows the airflow distribution plate 3 provided at the bell mouth 2 of the flue gas inlet. According to different working conditions, a porous plate or strip plate with a certain opening ratio or gap ratio can be designed through experiments.

Claims (8)

1. Rotary low-pressure large-capacity pulse bag filter, including a chassis, a clean air chamber, an ash hopper, a flower plate and a plurality of filter bags arranged in bunches and installed on the flower plate. The chassis is equipped with a flue gas inlet bell mouth , the clean air chamber is equipped with a clean flue gas outlet horn mouth, which is characterized in that a dust cleaning assembly consisting of a pulse valve, an air storage tank, a rotating air pipe and a horizontal injection branch pipe is arranged above the filter bag bundle. The pipe is connected with the rotating motor and the reducer to drive the horizontal injection branch pipe to rotate together. 2. The rotary low-pressure large-volume pulse bag filter according to claim 1, characterized in that there are multiple flower plates on the top of the same box, and each flower plate is equipped with a filter bag bundle and equipped with a set of dust removal components. 3. The rotary low-pressure large-volume pulse bag filter according to claim 2, characterized in that the box body is divided into multiple channels by partitions, and each channel is arranged with a plurality of flower plates in sequence, and each flower plate is installed There are multiple filter bags arranged in bundles. 4. The rotary low-pressure large-capacity pulse bag filter according to claim 1, characterized in that the inlet bell mouth and the air outlet bell mouth are respectively arranged horizontally on both sides of the box body. 5. The rotary low-pressure large-volume pulse bag filter according to claim 4, characterized in that the flue gas inlet is provided with a porous air flow plate or a strip air flow plate. 6. The rotary low-pressure large-volume pulse bag filter according to claim 1, characterized in that said horizontal injection branch pipe includes 3 to 4 branch pipes, and each branch pipe is equipped with multiple nozzles. 7. The rotary low pressure large volume pulse bag filter according to claim 1 or 2 or 3 or 4 or 5, characterized in that the bottom of the rotary air duct is equipped with a wear-resistant support bearing. 8. The rotary low-pressure large-volume pulse bag filter according to claim 7, characterized in that the pockets of the filter bags are flat and round, and the filter bags corresponding to each flower plate are arranged and fixed on the circumference of the pockets on the flower board.

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