CN201108786Y - bag collector - Google Patents

Abstract

The utility model belongs to the field of environmental protection and dust removal, in particular to a bag collector of a two-stage bag filter system. Pulse cleaning device (3), ash unloading device, wherein the filter box device is composed of two or more filter boxes connected in series, wherein the air inlet pipe (1) is connected to the lower box of the first filter box, and the upper box The body is connected with the lower box of the adjacent filter box, and the upper box of the final filter box is connected with the air outlet pipe (10); each upper box has a blowing pipe (8) controlled by a pulse cleaning device (3) ). The utility model equipment is light in weight, small in volume and convenient in maintenance. The collector has high material recovery rate, good collection effect and low flue gas emission concentration, and can be widely used in dust control and material recovery in metallurgy, building materials, electric power, chemical industry, flue gas dust removal and other industries.

Description

bag collector

technical field

The utility model belongs to the field of environmental protection and dust removal, in particular to a bag collector of a two-stage bag filter system.

Background technique

The dust collector is mainly composed of a filter box, an ash hopper, an air inlet and outlet, a filter bag, a skeleton, an injection device, and an ash unloading device. After the dust-laden gas enters the lower box from the air inlet pipe, the dust-laden air is filtered through the filter bag and retained on the outer surface of the filter bag. The purified gas enters the upper box, and enters the atmosphere or the clean air pipe through the exhaust pipe. As the filtering process progresses, the dust layer on the filter bag becomes thicker, and the resistance of the equipment increases. When the resistance of the equipment reaches the limit value, the dust removal control device turns on the electric control device according to the set value of the pressure difference or the set value of the dust removal time. With the pulse valve, the blowing air flows through the blowing pipe to spray the bag, and the dust on the filter bag is shaken off into the ash hopper and discharged by the ash discharge device. But the collector of prior art generally all adopts the structure of one-stage filtration system, promptly the soot that contains dust enters and purifies from the lower box body of filter box body, directly enters exhaust duct after entering upper box body; Not high, the collection effect is not ideal.

Contents of the invention

The purpose of this utility model is to provide a high-efficiency pulse bag collector with a special process structure using a two-stage bag filter system, which can improve material recovery rate, good collection effect, and reduce smoke emission concentration.

In order to achieve the above object, the utility model provides the following technical solutions:

A bag collector, which includes a filter box device, an ash hopper 13, an air inlet and outlet duct 1, 10, a pulse cleaning device 3, and an ash unloading device, wherein:

The filter box device is composed of two or more filter boxes connected in series, wherein the air inlet pipe 1 is connected to the lower box of the first filter box, and the upper box is connected with the lower box of the adjacent filter box to finally filter The upper box body of the box body is connected with the air outlet pipe 10;

Each upper box has a spray pipe 8 controlled by a pulse cleaning device 3 .

The beneficial effects of the utility model are:

Compared with the traditional bag filter and dust collector, the new high-efficiency pulse bag collector adopts the special process structure of the two-stage bag filter system, and has the following technical characteristics:

1. The material recovery rate is high, the collection effect is significantly improved, the loss of materials is greatly reduced, and the recovery and reuse of important materials has significant economic benefits.

2. Due to the use of a two-stage filter system for flue gas treatment, the dust removal effect is good and the flue gas emission concentration is low.

3. The filter wind speed is low, and the service life of the filter bag is long.

4. The cleaning effect is good, and the operation is convenient and fast.

5. Low investment cost and less equipment maintenance workload.

6. According to the filtering area and structure of the equipment, a single ash hopper or more than two ash hoppers can be set.

Brief description of the drawings

Fig. 1 is a schematic structural view of the first embodiment of the bag collector of the present invention (single ash hopper).

Fig. 2 is a schematic structural view of the second embodiment of the present invention (two ash hoppers).

Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 4 is a side view of direction A in Fig. 3 .

Refer to Fig. 1 for the marks of each part in accompanying drawings 2, 3, and 4.

Detailed ways

1. Components: The pulse bag material collector is mainly composed of a filter box, an air inlet and outlet pipe, a bag filter system, a pulse jet dust cleaning system, a compressed gas pipeline, a decompression device, an overhaul device, and a discharge device.

2. Filtration process: The dust-laden gas enters the first-level filter system (namely, 1# box) from the air inlet pipe of the bag collector, and the dust-laden air enters the 1# box to be filtered through the filter bag, and a large amount of dust or materials are filtered. The flow is intercepted on the outer surface of the filter bag. After the dusty airflow passing through the filter bag reaches the first level of purification, it passes through the upper box of the 1# box and enters the lower box of the 2# box, and then enters the secondary filter system to start the airflow Perform secondary purification and filtration treatment, and the airflow purified by the two-stage filtration system enters the chimney through the exhaust duct and is discharged into the atmosphere.

3. Cleaning process: With the progress of the filtering condition, the dust layer attached to the filter bag becomes thicker, and the resistance of the equipment increases. The set value of graying time opens the electromagnetic pulse valve, and the blowing air flows through the blowing pipe to pulse blow the filter bag, and the dust on the filter bag is shaken off into the ash hopper, thus completing a cleaning process of the filter bag. The dust or materials concentrated in the ash hopper are regularly transferred to the designated storage place through the ash unloading device of the collector to realize the recycling and reuse of materials.

Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

Example 1

Fig. 1 is the structural diagram of this embodiment (single ash hopper), the dusty gas enters the 1# lower box body 2 through the air inlet pipe 1, passes through the filter bag 12 and passes through the first filtration, and then enters the 1# upper box body 4 , 2# lower box 11, start secondary filtration, the air flow enters 2# upper box 9 after being filtered by filter bag 12, and then is discharged through air outlet pipe 10, and the filtration ends. After continuous filtering conditions, the dust or material on the filter bag accumulates more and more, and the resistance of the equipment increases, so it needs to be cleaned. The pulse cleaning device 3 is activated, and the filter bag is cleaned by pulse jetting through the blowing pipe 8. The shaken dust or material falls into the ash hopper 13 and is transported away by the ash unloading device 15 . There is a partition 7 between the 1# upper box and the 2# upper box, and the top inspection door 6 is arranged on the upper part. There is a grille between the upper and lower boxes.

Example 2

Fig. 2 is the structural form of another embodiment (two ash hoppers) of this collector. According to the structural requirements, more than two ash hoppers can be set. Other structures are the same as the first embodiment.

Example 3

As shown in Figures 3 and 4, a chemical plant uses a pulse bag collector. The equipment height is 10.636m, the total height of the upper and lower boxes is 4.5m, the width is 3.8m, the filtration area is 600m ² , two-stage filtration process, and the filtration wind speed is <1m. /min.

The utility model adopts a two-stage bag filter system and a pulse-jet dust-cleaning device to clean the dust. The equipment is light in weight, small in size and convenient in maintenance. The collector has high material recovery rate, good collection effect and low flue gas emission concentration, and can be widely used in dust control and material recovery in metallurgy, building materials, electric power, chemical industry, flue gas dust removal and other industries.

Claims (6)

1. bag collector, it comprises filter box device, ash bucket (13), in/out air tube (1,10), pulse ash remover (3), ash-discharging device, it is characterized in that:

Described filter box device is composed in series by two-stage or above filter box, and wherein blast pipe (1) connects the lower box of first filter box, and upper box is communicated with the lower box of adjacent filter box, and the upper box of final filter box is connected with discharge pipe (10);

Winding-up pipe (8) by pulse ash remover (3) control is arranged in each upper box.

2. bag collector as claimed in claim 1 is characterized in that: have dividing plate (7) to be separated by between the adjacent upper box.

3. bag collector as claimed in claim 1 is characterized in that: lattice board (5) is arranged between the described upper and lower casing.

4. bag collector as claimed in claim 1 is characterized in that: this bag collector also comprises the column (14) that is used to support.

5. bag collector as claimed in claim 1 is characterized in that: top access door (6) is arranged at described each upper box top.

6. bag collector as claimed in claim 1 is characterized in that: described ash bucket (13) is two or more.

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