CN209885425U - A bag filter - Google Patents

Abstract

The utility model provides a bag type dust collector, including the dust remover jar body, the dust remover jar body is including return-air cavity, dust removal cavity and ash bucket, and clean gas export gentleness washing entry is established at the top, is equipped with the dust bag in the return-air cavity, is equipped with dirt gas entry, impeller and dust export on the ash bucket, is equipped with the choke ring board between dust removal cavity and the ash bucket, the utility model discloses simple structure, reasonable in design, behind the gaseous entering dust remover of dirt gas, at first at the effect of impeller and choke ring board, reduce the velocity of flow by a wide margin, most dust receives gravity whereabouts to the ash bucket in, can reduce the filter pressure of dust bag by a wide margin, reduces maintenance pressure, simultaneously, the utility model discloses can remove dust and wash in step, 2 group's dust bag intervals carry out the air wash, do not influence the dust removal.

Description

A bag filter

technical field

The utility model relates to the technical field of dust removal equipment, in particular to a bag type dust collector.

Background technique

A bag filter is a dry dust filter. It is suitable for capturing fine, dry, non-fibrous dust.

Most of the bag-type dust collectors currently in use often need to stop when the filter bag is air-washed, which affects the dust removal efficiency. Moreover, the fan power of some dust collectors is too large, the dust is basically completely filtered by the filter bag, and the working pressure of the filter bag is too large. , Due to the reasonable reduction of the dust flow rate, the use of gravity to settle part of the dust and reduce the working pressure of the filter bag.

Utility model content

Aiming at the above problems, the utility model proposes a bag-type dust collector.

The specific technical solutions are as follows:

A bag-type dust collector, comprising a dust collector tank, characterized in that the dust collector tank includes a return air chamber, a dust removal chamber and an ash hopper in sequence from top to bottom, and the return air chamber, the dust removal chamber The chambers are separated by a first partition plate, and a choke ring plate is arranged between the dust removal chamber and the ash hopper;

The return air chamber is provided with two groups of dust removal filter bags, each group of dust removal filter bags is composed of a plurality of dust removal filter bags, the upper end of the dust removal filter bags is connected to the first partition through a venturi, and communicates with the return air chamber, The outer edge of the upper end of the choke ring plate is welded and fixed to the inner wall of the lower end of the dust removal chamber;

The dust hopper is provided with a dust gas inlet, an impeller and a dust outlet, the top of the dust collector tank is provided with a clean gas outlet and an air washing inlet, and the return air chamber is provided with a second partition, the dust gas The inlet is located on the side of the ash hopper and communicates with the inside of the ash hopper, the dust outlet is located at the lower end of the ash hopper, and the impeller is arranged directly above the dust outlet through the bracket and rotates freely;

The second partition is arranged vertically, and the air return chamber is divided into 2 chambers, which are the No. 1 chamber and the No. 2 chamber respectively. The second partition is symmetrically distributed, the No. 1 chamber is connected to a clean air outlet and an air wash inlet, the No. 2 chamber is connected to another clean air outlet and another air wash inlet, and two sets of dust filter bags are connected to the second partition. The plates are symmetrically distributed;

The clean air outlet is connected with a clean air discharge pipe, the clean air discharge pipe is provided with an induced draft fan and a No. 1 air valve, the air wash inlet is connected with a return air pipe, and the upper end of the return air pipe is connected to the clean air Discharge pipe with No. 2 air valve;

Further, the choke ring plate is in the shape of a horn with an upper width and a lower width;

Further, the dust gas inlet is arranged obliquely downward;

Further, the ash hopper is conical;

Further, a rotary unloading valve is provided at the dust outlet;

Further, the impeller is located on the axis where the dust gas inlet is located.

The beneficial effects of the present utility model are:

The bag-type dust collector proposed by the utility model includes a dust collector tank body, and the dust collector tank body includes a return air chamber, a dust removal chamber and an ash hopper. The dust filter bag is provided with a dust gas inlet, an impeller and a dust outlet on the ash hopper, and an air choke ring plate is arranged between the dust removal chamber and the ash hopper. The utility model has a simple structure and a reasonable design. After the dust gas enters the dust collector, First, the impeller and the choke ring plate greatly reduce the flow rate, and most of the dust falls into the ash hopper by gravity, which can greatly reduce the filtration pressure of the dust filter bag and reduce the maintenance pressure. At the same time, the utility model can remove dust The cleaning is carried out synchronously, and the two groups of dust removal filter bags are air-washed at intervals, which does not affect the dust removal operation.

Description of drawings

Figure 1 is a cross-sectional view of the utility model.

Detailed ways

In order to make the technical solution of the present utility model clearer and clearer, the present utility model will be further described below in conjunction with the accompanying drawings, any solution obtained by performing equivalent replacement and conventional reasoning on the technical features of the technical solution of the present utility model falls into the protection of the present utility model. scope.

As shown in the figure, a bag-type dust collector includes a dust collector tank 1, which is characterized in that the dust collector tank 1 includes a return air chamber 2, a dust removal chamber 3 and an ash hopper 4 in sequence from top to bottom , the air return chamber 2 and the dust removal chamber 3 are separated by a first partition 5, and a choke ring plate 6 is arranged between the dust removal chamber 3 and the ash hopper 4;

The air return chamber 2 is provided with two groups of dust removal filter bags 7, each group of dust removal filter bags 7 is composed of a plurality of dust removal filter bags 7, and the upper end of the dust removal filter bags 7 is connected to the first partition 5 through a venturi 8 , and communicates with the air return chamber 2, the outer edge of the upper end of the choke ring plate 6 is welded and fixed to the inner wall of the lower end of the dust removal chamber 3;

The dust hopper 4 is provided with a dust gas inlet 9, an impeller 10 and a dust outlet 11, the top of the dust collector tank 1 is provided with a clean gas outlet 12 and an air washing inlet 13, and the return air chamber 2 is provided with The second partition 14, the dust gas inlet 9 is located on the side of the ash hopper 4 and communicates with the inside of the ash hopper 4, the dust outlet 11 is located at the lower end of the ash hopper 4, and the impeller 10 is arranged on the positive side of the dust outlet 11 through a bracket above, and turn freely;

The second partition 14 is arranged vertically, and divides the air return chamber 2 into two chambers, namely the first chamber 15 and the second chamber 16, the number of the clean air outlet 12 and the air washing inlet 13 Both are 2, and are symmetrically distributed with respect to the second partition 14. The No. 1 chamber 15 is connected to a clean gas outlet 12 and an air wash inlet 13, and the No. 2 chamber 16 is connected to another clean gas outlet 12 and another gas The washing inlet 13 and the two groups of dust filter bags are symmetrically distributed with respect to the second partition 14;

The clean air outlet 12 is connected with a clean air discharge pipe 17, the clean air discharge pipe 17 is provided with an induced draft fan 18 and a No. 1 air valve 19, the air wash inlet 13 is connected with a return air pipe 20, the The upper end of the air return pipe 20 is connected to the clean air discharge pipe 17, and is provided with a No. 2 air valve 21;

Further, the choke ring plate 6 is in the shape of a trumpet that is wide at the top and narrow at the bottom;

Further, the dust gas inlet 9 is arranged obliquely downward;

Further, the ash hopper 4 is conical;

Further, the dust outlet 11 is provided with a rotary unloading valve 22;

Further, the impeller 10 is located on the axis where the dust gas inlet 9 is located.

The working principle of a bag filter of the present embodiment is as follows:

During dust removal: the dust gas enters the dust collector from the dust gas inlet, and under the action of the exhaust fan, the upper layer of the dust collector is moved. During this process, the dust gas first hits the impeller and is blocked by the choke ring plate. The flow rate is greatly reduced, most of the dust falls into the ash hopper by gravity, and a small part of the dust moves with the airflow net, and after being filtered by the dust filter bag, it enters the return air chamber, and then passes through the clean air outlet and the clean air discharge pipe. Exhaust to complete the entire dust filtration process; (at this time, the No. 1 gas valve is all opened, and the No. 2 gas valve is all closed)

During the dust removal work, when the filter bag is cleaned: the dust removal work does not stop, among the two clean air discharge pipes, the No. 1 air valve on the one clean air discharge pipe and the return air pipe connected to it is closed, and the No. 2 air valve is opened. The clean air is returned to a certain chamber of the return air chamber, and the group of dust removal filter bags connected to it is air-washed; this cleaning method can be carried out in a cycle, and the two groups of dust-removal filter bags are air-washed at intervals;

To sum up, the structure of this embodiment is simple and the design is reasonable. After the dust gas enters the dust collector, the impeller and the choke ring plate first act to greatly reduce the flow rate, and most of the dust falls into the ash hopper by gravity, which can be eliminated The filtration pressure of the dust removal filter bag is greatly reduced, and the maintenance pressure is reduced. At the same time, the utility model can perform the dust removal cleaning synchronously, and the two groups of dust removal filter bags can be air-washed at intervals, which does not affect the dust removal operation.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. The changes or replacements should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (6)

1. A bag type dust collector comprises a dust collector tank body, and is characterized in that the dust collector tank body sequentially comprises an air return chamber, a dust collection chamber and an ash bucket from top to bottom, the air return chamber and the dust collection chamber are separated by a first partition plate, and a choke ring plate is arranged between the dust collection chamber and the ash bucket;

2 groups of dust-removing filter bags are arranged in the air return chamber, each group of dust-removing filter bags is composed of a plurality of dust-removing filter bags, the upper ends of the dust-removing filter bags are connected with the first partition plate through Venturi tubes and communicated with the air return chamber, and the outer edges of the upper ends of the choke ring plates are welded and fixed on the inner wall of the lower end of the dust-removing chamber;

the dust hopper is provided with a dust gas inlet, an impeller and a dust outlet, the top of the dust remover tank body is provided with a clean gas outlet and a gas washing inlet, a second partition plate is arranged in the gas return cavity, the dust gas inlet is positioned on the side surface of the dust hopper and communicated with the dust hopper, the dust outlet is positioned at the lower end of the dust hopper, and the impeller is arranged right above the dust outlet through a support and rotates freely;

the second partition plate is vertically arranged to divide the air return chamber into 2 chambers, namely a first chamber and a second chamber, the number of the purified air outlets and the number of the air washing inlets are 2, the purified air outlets and the air washing inlets are symmetrically distributed about the second partition plate, the first chamber is communicated with one purified air outlet and one air washing inlet, the second chamber is communicated with the other purified air outlet and the other air washing inlet, and the 2 groups of dust removal filter bags are symmetrically distributed about the second partition plate;

the air washing device is characterized in that a purified gas discharge pipe is connected to the purified gas outlet, a draught fan and an air valve are arranged on the purified gas discharge pipe, an air return pipe is connected to the air washing inlet, and the upper end of the air return pipe is communicated with the purified gas discharge pipe and is provided with a second air valve.

2. The bag collector defined in claim 1, wherein said choke ring plate is flared so as to be wide at the top and narrow at the bottom.

3. The bag house of claim 1, wherein the dust and air inlet is disposed diagonally downward.

4. The bag house of claim 1, wherein the hopper is conical.

5. The bag house of claim 1, wherein the dust outlet is provided with a rotary blanking valve.

6. The bag house of claim 1, wherein the impeller is located on an axis of the dust and air inlet.

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