CN201988286U - Bag-type dust collector for straw boiler - Google Patents

Abstract

A bag dust collector for a straw boiler, which relates to a dust collector, including a spark trap and a bag dust collector, and is characterized in that one side of the spark trap is a flue gas inlet, and the other side passes through an air intake duct and a bag filter. The dust collector is connected, the other side of the bag dust collector is the flue gas outlet, the spark trap is fixed on the spark trap bracket, the bottom of the spark trap is provided with an ash hopper, and the bag dust collector is fixed on On the support of the bag filter, the inside of the bag filter is a bag room. The beneficial effects of the utility model are: low investment, high temperature resistance of the cloth bag, good dust removal effect and small running resistance.

Description

A bag filter for straw boiler

technical field

The utility model relates to a dust collector, in particular to a cloth bag dust collector for straw boilers.

Background technique

The flue gas of the straw boiler is discharged from the combustion chamber through the smoke chamber and the chimney. Due to the short and straight running route, a large amount of dust and unburned solid particles will be discharged into the atmosphere, causing pollution to the environment. In the prior art, the bag filter is widely used to clean and filter dusty flue gas and material recovery during high-temperature smelting of submerged arc furnaces, so that the flue gas can meet the emission standards. The dust-laden flue gas after combustion is blown into the filter bag of the bag filter under the action of the induced draft fan. During this process, the dust and recycled materials contained in the flue gas are filtered by the filter bag and collected on the inner wall of the filter bag. After such a process, the clean flue gas comes out of the filter bag, which can be discharged into the high-altitude atmosphere through the top chimney. As long as the filter area of the filter bag is reasonably selected, it is relatively easy to meet the requirements of environmental protection. In the existing bag filter, when the dust-laden gas enters the dust collector box from the air inlet of the dust collector, due to the high flow rate, there is no compartmental diversion, resulting in most of the air flowing into the rear side of the air inlet body, increasing the rear filter bag. filter load. In the case of high concentration of dusty gas, the local filter bag at the rear side of the air inlet chamber will be severely worn, and the filter bag needs to be replaced frequently. Especially for large bag filter, due to the eddy current phenomenon caused by uneven air distribution, the resistance of the filter increases and the service life of the rear filter bag is reduced. And because a large number of large particles with sparks will be produced during the combustion of the straw boiler, the temperature will sometimes be relatively high, and the dust removal effect of the dust collector of the existing straw boiler is not very satisfactory.

Utility model content

The technical problem to be solved by the utility model is to provide a straw boiler bag dust collector with small running resistance and good dust removal effect.

The technical problem to be solved by the utility model adopts the following technical solutions to realize,

A bag filter for a straw boiler, including a spark trap and a bag filter, characterized in that: one side of the spark trap is a flue gas inlet, and the other side is connected to the bag filter through an air intake duct, The other side of the bag dust collector is the flue gas outlet. The spark trap is fixed on the spark trap bracket. There is an ash bucket at the bottom of the spark trap, and the bag dust collector is fixed on the bag filter bracket. Above, the inside of the bag filter is a bag room.

The bottom of the bag chamber is provided with an ash hopper, and the upper part of the bag chamber is provided with a spray pipe.

A pulse valve is installed on the blowing pipe.

The air intake duct is connected with a bypass, one end of the bypass is provided with an air flow cut-off valve plate, and the other end is provided with a switching valve cylinder.

The upper part of the switching valve cylinder is equipped with a rainproof shed.

The beneficial effects of the utility model are: low investment, high temperature resistance of the cloth bag, good dust removal effect and small running resistance.

Description of drawings

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

Fig. 2 is a sectional view of the bag filter of the present invention.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

As shown in Figure 1 and Figure 2, a bag filter for a straw boiler includes a spark trap 4, a bag filter 13, and an airflow regulating valve 12. One side of the spark trap 4 is the flue gas inlet 3, and the other side The air intake duct 14 is connected to the bag filter 13, the other side of the bag filter 13 is the flue gas outlet 6, the spark trap 4 is fixed on the spark trap bracket 1, and the bottom of the spark trap 4 is provided with Ash hopper 2, bag filter 13 is fixed on the bag filter support 2`, inside the bag filter 13 is a bag room 7, the bottom of the bag room 7 is equipped with an ash hopper 2`, and the upper part of the bag room 7 is equipped with a blowing pipe 8, spraying A pulse valve 9 is installed on the blowpipe 8 .

The air intake duct 14 is connected with a bypass 5, one end of the bypass 5 is provided with an air flow cut-off valve plate, and the other end is provided with a switching valve cylinder 11, and a rainproof shed 10 is installed on the top of the switching valve cylinder 11.

When the utility model is working, when the boiler dusty gas enters the spark trap 4, the spark trap 4 traps and settles the large particles with sparks and then enters the bag filter 13, and the gas is purified after being filtered by the bag Exhausted into the atmosphere by the induced draft fan. If the temperature is too high, the bypass valve plate is opened, and the high-temperature flue gas is directly discharged into the atmosphere by the induced draft fan.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A bag filter for a straw boiler, including a spark trap and a bag filter, characterized in that: one side of the spark trap is the flue gas inlet, and the other side passes through the air intake duct and the bag filter The other side of the bag filter is the flue gas outlet. The spark trap is fixed on the spark trap bracket. There is an ash hopper at the bottom of the spark trap, and the bag filter is fixed on the bag dust collector. On the filter bracket, the bag filter is a bag room. 2. A bag filter for straw boilers according to claim 1, characterized in that: the bottom of the bag chamber is provided with an ash hopper, and the upper part of the bag chamber is provided with a blowing pipe. 3. The bag filter for straw boiler according to claim 2, characterized in that: a pulse valve is installed on the blowing pipe. 4. A bag filter for straw boilers according to claim 3, characterized in that: said air inlet duct is connected with a bypass, one end of the bypass is provided with an air flow cut-off valve plate, and the other end is provided with a switching valve cylinder. 5. A bag filter for straw boilers according to claim 4, characterized in that a rain-proof shed is installed on the upper part of the switching valve cylinder.

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