CN101810977A - Filter-bag protective device for injecting pulse air flow of bag-type dust collector - Google Patents

Abstract

The invention relates to a filter-bag protective device for injecting pulse air flow of a bag-type dust collector, comprising a sleeve, reinforcing ribs, a first hoop ring and a second hoop ring, wherein the reinforcing ribs are fixed in the inner sides of the first hoop ring and the second hoop ring; the sleeve passes through the first hoop ring and the second hoop ring vertically under the support of the reinforcing ribs; the diameter of the first hoop ring is greater than that of a bag cage; and the diameter of the second hoop ring is less than that of the bag cage. The filter-bag protective device can achieve the purposes of protecting a bag mouth of a filter bag and prolonging the service life of the filter bag by only needing to be rack-mounted on a cage mouth of the original bag cage, does not need to replace the original bag cage, has little investment and small air-flow resistance when in the filtering work, and also has simple and convenient installation.

Description

A filter bag protection device for pulse air blowing of bag filter

technical field

The invention relates to the field of matching devices for bag-type dust collectors, in particular to a filter bag protection device for pulse airflow injection of bag-type dust collectors.

Background technique

At present, most dust removal methods of bag filter adopt compressed air pulse dust removal method. By spraying high-pressure and high-speed airflow into the filter bag, the airflow acts on the filter bag to generate expansion and contraction vibration, and the airflow flow filter bag impacts the dust layer to achieve the dust removal effect. In the current bag filter, there is no protective measure for the mouth of the filter bag. The high-speed air flow will cause mechanical damage to the mouth of the filter bag and shorten the life of the filter bag. Figure 1 shows the bag cage without protective measures. In order to deal with this problem, the conventional technology is to install a casing to protect the filter bag from damage at the inlet of the bag filter bag lining bag cage. Figure 2 shows a conventional bag cage with a casing protection device , but this method causes the air flow resistance of the filter bag of the bag filter to be large and the energy consumption increases during the filtering work.

Contents of the invention

The technical problem to be solved by the present invention is to provide a filter bag protection device for pulse airflow injection of bag filter, which can protect the bag mouth of the filter bag without changing the bag cage, and the air flow resistance is small when filtering , Simple and convenient installation.

The technical solution adopted by the present invention to solve the technical problem is to provide a filter bag protection device for pulse airflow injection of bag filter, including sleeve, reinforcing rib, first hoop and second hoop. The reinforcing rib is fixed on the inner side of the first hoop and the second hoop; the sleeve is vertically passed through the first hoop and the second hoop under the support of the reinforcing rib; the The diameter of the first hoop is larger than the diameter of the bag cage; the diameter of the second hoop is smaller than the diameter of the bag cage.

The second hoop of the filter bag protection device for pulse air blowing of the bag filter is in close contact with the reinforcing rib of the bag cage.

The casing of the filter bag protection device for pulse airflow injection of the bag filter is hourglass-shaped.

Beneficial effect

Due to the adoption of the above-mentioned technical scheme, the present invention has the following advantages and positive effects compared with the prior art: the present invention only needs to be mounted on the cage mouth of the original bag cage to protect the filter bag mouth and extend the filter bag The purpose of life, and no need to replace the original bag cage, less investment, small airflow resistance when filtering, simple and convenient installation.

Description of drawings

Fig. 1 is a schematic diagram of a bag cage without a filter bag protection device in the prior art;

Fig. 2 is a schematic diagram of a bag cage equipped with a sleeve protection device in the prior art;

Fig. 3 is a top view of the present invention;

Fig. 4 is a sectional view along line A-A in Fig. 3;

Fig. 5 is a schematic diagram of the cleaning operation of the present invention;

Fig. 6 is a working principle diagram of the filter of the present invention.

Detailed ways

Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

The embodiment of the present invention relates to a filter bag protection device for pulse airflow injection of bag filter, as shown in Fig. 3 and Fig. 4, including a sleeve 1, a reinforcing rib 2, a first hoop 3 and a second hoop 4. The reinforcing rib 2 is fixed on the inside of the first hoop 3 and the second hoop 4, and the sleeve 1 passes through the first hoop under the support of the reinforcing rib 2 hoop 3 and second hoop 4. Wherein, the diameter of the first hoop 3 is greater than the diameter of the bag cage 5, so that the filter bag protection device for pulse air blowing of the bag filter can be mounted on the cage mouth of the bag cage 5; the second The diameter of the hoop 4 is smaller than the diameter of the bag cage 5, so that the filter bag protection device for pulse air blowing of the bag filter can be packed into the bag cage 5 below the first hoop 3. If the diameter of the second hoop 4 is only slightly smaller than the diameter of the bag cage 5, then the second hoop 4 can be close to the reinforcing rib of the bag cage 5, thereby ensuring that the casing 1 remains vertical. The casing 1 is designed in an hourglass shape.

The present invention is mounted on the cage mouth of the bag cage. When cleaning dust, as shown in Figure 5, the blowing airflow is sprayed into the sleeve pipe 1, and the surrounding air is induced to form an induced airflow, which is different from the bag cage not equipped with a protective device. (As shown in Figure 1), compared with the filter bag, it can effectively protect the bag opening of the filter bag and prolong the life of the filter bag. When filtering, as shown in Figure 6, the purified air flow enters the clean air box from the inside and outside of the casing 1 at the same time. Compared with the bag cage (shown in Figure 2) equipped with a casing protection device, the resistance of the airflow is smaller. In addition, the present invention does not need to replace the original bag cage, requires less investment, and is simple and convenient to install.

Claims (3)

1. filter-bag protective device for injecting pulse air flow of bag-type dust collector, comprise sleeve pipe (1), reinforcement (2), first cranse (3) and second cranse (4), it is characterized in that described reinforcement (2) is fixed on the inboard of described first cranse (3) and second cranse (4); Described sleeve pipe (1) vertically passes described first cranse (3) and second cranse (4) under described reinforcement (2) supports; The diameter of described first cranse (3) is greater than the diameter of bag cage (5); The diameter of described second cranse (4) is less than the diameter of bag cage (5).

2. filter-bag protective device for injecting pulse air flow of bag-type dust collector according to claim 1 is characterized in that, the reinforcement of described second cranse (4) and described bag cage (5) near.

3. filter-bag protective device for injecting pulse air flow of bag-type dust collector according to claim 1 is characterized in that, described sleeve pipe (1) is a hourglass shape.

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