CN201304301Y - Bag-type dust collector - Google Patents

Abstract

The utility model relates to an environmental protection dust removal device, in particular to a bag type dust collector. The flower board arranged in the horizontal direction divides the box into the upper air purification space and the lower filter space. There are two flat partitions extending downward from the bottom of the flower board in the vertical direction. The space between the two partitions is the wind The space between the partition and the box is a bag room. The deflector divides the air duct into a passage with an air inlet and a passage with an air outlet. The air inlet directly communicates with the filter space, and the air outlet passes through the outlet on the flower plate. The wind branch port communicates with the clean air space, and several filter bags are hung in the bag room. It can be seen from the above technical scheme that the utility model divides the box body into a clean air space and a filter space with a flower plate, divides the filter space into an air duct and a bag room with a partition plate, and then uses a deflector to divide the air duct into a space containing an air inlet. The passageway and the passageway containing the air outlet, the dust is filtered through the filter bag in the bag room through the air inlet, and the clean gas passes through the air outlet branch to the air outlet to complete the collection of dust.

Description

bag filter

technical field

The utility model relates to an environmental protection dust removal equipment, in particular to a bag-type dust collector, which is mainly used for dust collection at waste gas discharge points in the cement industry, and can also be applied to similar occasions in industries such as iron and steel, machinery, metallurgy, and building materials. dust collection.

Background technique

my country is a big country in cement production and consumption, and the output of cement accounts for more than half of the world. Dust emission from the cement industry is an important cause of air pollution. In my country, traditional dust collectors are mostly used for dust emission. However, with the rapid development of the domestic economy, the continuous improvement of material living standards and the enhancement of people's awareness of environmental protection, the national environmental protection policy requirements are in line with international standards. The traditional Electrostatic precipitators can no longer meet the requirements of environmental protection, and the cost is relatively high.

Contents of the invention

The purpose of the utility model is to provide a bag-type dust collector with high integration efficiency and low cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the flower board arranged in the horizontal direction divides the box body into the upper clean air space and the lower filter space, and two flat The space between the two partitions is the air channel, the space between the partition and the box is the bag room, and the deflector divides the air channel into a passage containing the air inlet and a passage containing the air outlet. It directly communicates with the filter space, and the air outlet communicates with the clean air space through the air outlet branch on the flower plate, and several filter bags are hung in the bag room.

It can be seen from the above technical scheme that the utility model divides the box body into a clean air space and a filter space with a flower plate, divides the filter space into an air duct and a bag room with a partition plate, and then uses a deflector to divide the air duct into a space containing an air inlet. The passageway and the passageway containing the air outlet, the dust is filtered through the filter bag in the bag room from the air inlet, the dust falls, and the clean gas passes through the filter bag from the air outlet branch on the flower plate to the air outlet, thus completing the collection of dust , not only high integration efficiency but also low cost.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a cross-sectional view along line A-A of Fig. 1 .

Detailed ways

As shown in Fig. 1 and Fig. 2, a bag type dust collector is composed of a box body, an air inlet 22A, an air outlet 22B, a flower plate 30, a partition 21, an ash hopper 50 and the like. The flower plate 30 arranged in the horizontal direction divides the box body into an upper clean air space 10 and a lower filter space 20 . There are two flat partitions 21 extending vertically downward from the bottom of the flower board 30 , the upper edge of the partition 21 is connected with the flower board 30 , and the lower edge is lower than the bottom of the filter bag 40 and leaves a gap with the bottom of the box. The partition 21 divides the filter space 20 into an air duct 22 and a bag room 23. The space between the two partitions 21 is the air duct 22, and the space between the partition 21 and the box is the bag room 23, which is installed obliquely on the air duct 22. The rectangular deflector 221 in the middle separates the air duct 22 into a passage containing the air inlet 22A and a passage containing the air outlet 22B. One end of the deflector 221 is fixed at a position higher than the upper opening of the air inlet 22A and is spaced from the flower plate 30. There is a gap, and the other end is fixed at a position lower than the lower outlet of the air outlet 22B and higher than the lower end surface of the partition 21; several filter bags 231 are suspended in the bag chamber 23, and the top of the filter bags 231 passes through the flower plate hole on the flower plate 30 Fixed with the flower plate 30; the clean air space 10 above the flower plate 30 corresponding to the bag room 23 is divided into a plurality of clean air chambers 12 by the partition 11, and a pulse injection system is provided above each clean air chamber 12 40. The pulse injection system 40 can work alone, that is, while cleaning one clean air chamber 12, the remaining clean air chambers 12 can continue to work; The air outlet branch 31 that communicates with each other is provided with a poppet valve 13 above the air outlet branch port 31, and the poppet valve 13 can close or open the air outlet branch port 31 to control its communication with the air outlet port 22B; the air inlet port 22A is directly connected to the filter space 20 communicates with each other, and the clean air space communicates with the air outlet 22B through the air outlet branch 31;

The specific operation process is as follows:

During normal operation, the dust-laden gas enters through the air inlet 22A. As the airflow speed slows down, some large dust particles hit the deflector 221 and fall directly into the ash hopper, and most of the other dust particles rise into the bags with the airflow. chamber 23, after being filtered by the filter bag 231 in the bag chamber 23, the dust particles are retained on the outside of the filter bag 231, and the purified gas passes through the filter bag 231 and enters from the inside of the filter bag 231 through the flower plate hole on the flower plate 30 The upper clean air space 10 enters the air outlet 22B through the air outlet branch 31 on the flower plate 30, so as to realize dust collection.

As the filtration continues, the resistance of the bag filter also increases, and the ventilation rate decreases, so it needs to be cleaned, and the cleaning is done by the pulse injection system 40 . When cleaning dust, the pulse valve of the pulse injection system 40 above the clean air chamber 12 sends the compressed air flow into the filter bag 231, and the filter bag 231 rapidly bulges, resulting in strong shaking, causing the dust on the outside of the filter bag 231 to shake off, reaching For the purpose of dust removal, during this process, the air outlet branch 31 corresponding to the corresponding clean air chamber 12 will be closed by the poppet valve 13 falling. .

In the above-mentioned bag type dust collector, through the filtration of the filter bag 231, the dust particles are retained in the ash hopper 50, and the purified gas passes through the inside of the filter belt 231 and enters the air outlet 22B through the air outlet branch 31. When dusting, the pulse injection system 40 can work alone, and it does not affect the work of the other clean air chambers 12 while cleaning the dust in one clean air chamber 12. This dust collector adopts timing cleaning control, which can clean dust off-line and on-line switch. To sum up, the utility model replaces the original electric dust collector with a bag filter, which not only has high integration efficiency, but also is more economical than the electric dust collector.

Claims (7)

1. A bag type dust collector, characterized in that: the flower plate (30) arranged in the horizontal direction separates the box body into an upper clean air space (10) and a lower filter space (20), and the flower plate (30) ) is extended downwards along the vertical direction with two flat partitions (21), the space between the two partitions (21) is the air duct (22), and the space between the partition (21) and the box is a bag chamber (23), the deflector (221) divides the air duct (22) into a passage containing the air inlet (22A) and a passage containing the air outlet (22B), and the air inlet (22A) directly communicates with the filter space (20) , the air outlet (22B) communicates with the clean air space (10) by the air outlet branch (31) on the flower plate (30), and some filter bags (231) are suspended in the bag chamber (23). 2. The bag-type dust collector according to claim 1, characterized in that: the partition (11) divides the clean air space above the flower plate corresponding to the bag room (23) into a plurality of clean air chambers (12) , the top of each clean air chamber (12) is provided with a pulse injection system (40). 3. The bag-type dust collector according to claim 1, characterized in that: the flower plate above the air duct (22) is provided with an air outlet branch (31) communicating with the air outlet (22B), and the air outlet branch The top of (31) is provided with lift valve (13). 4. The bag-type dust collector according to claim 1, characterized in that: the top of the filter bag (231) is fixed to the flower plate (30) through the flower plate hole on the flower plate (30). 5. The bag-type dust collector according to claim 1, characterized in that: the upper edge of the partition (21) is connected to the flower plate (30), and the lower edge is lower than the bottom of the filter bag (231) and connected to the box body Leave a gap at the bottom. 6. The bag-type dust collector according to claim 1, characterized in that: one end of the deflector (221) is fixed at a position higher than the upper opening of the air inlet (22A) and there is a gap with the flower plate (30) , the other end is fixed at a position lower than the lower outlet of the air outlet (22B) and higher than the lower end surface of the dividing plate (21). 7. The bag-type dust collector according to claim 1, characterized in that: a trumpet-shaped ash hopper (50) is connected to the lower end of the box body.

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