CN206996099U - A kind of sack cleaner - Google Patents

Abstract

The utility model relates to a bag filter. It includes a dust collector box, and a dust removal cavity is arranged inside the dust collector box; the lower half of the dust removal cavity is provided with an ash hopper, and the upper half of the dust removal cavity is provided with a number of dust removal bags, The upper end of each dust-removing bag is provided with an air outlet, and the lower end of the dust-removing bag is provided with an air inlet. It is characterized in that the air inlet of each dust-removing bag is provided with a smoke distribution device. The utility model reduces the impact and wear of the flue gas on the dust-removing bag, especially the wear of the mouth of the dust-removing bag, reduces the damage of the dust-removing bag, and prolongs its service life.

Description

A bag filter

technical field

The utility model relates to the technical field of environmental protection, in particular to a bag filter.

Background technique

Flue gas emitted by industries such as petrochemical, thermal power, and steel usually contains toxic and harmful substances such as dust, sulfur oxides, and nitrogen oxides. In order to control the atmospheric environment, the state and relevant environmental protection departments have very strict requirements on flue gas emissions; bag dust collectors are mostly used to filter and remove dust substances in the air.

At present, the bag filter generally includes a dust collector box, an air outlet is provided on the upper side of the dust collector box, an air inlet is provided on the lower side of the dust collector box, and a dust removal cavity is provided inside the dust collector box; There is an ash hopper in the lower part of the cavity, and a dust bag in the upper part of the dust removal cavity; the upper and lower ends of the ash hopper are open. The dust bag in the bag filter with this structure, especially the air inlet of the dust bag, is easily damaged due to the impact of the gas intake; and when the air intake direction is chaotic, the air is not easy to enter the dust collector. The cloth bag affects the filtration rate of the dust bag.

Contents of the invention

The purpose of the utility model is to solve the above problems, and provide a bag filter which can adjust the flow direction of the flue gas and reduce the wear of the dust bag mouth.

In order to solve the above problems, the technical scheme adopted by the utility model is as follows:

A bag dust collector, comprising a dust collector box body, a dust removal cavity is arranged inside the dust collector box body; an ash bucket is provided in the lower part of the dust removal cavity, and an A certain number of dust-removing cloth bags, each dust-removing bag is provided with an air outlet at the upper end, and an air inlet is provided at the lower end of the dust-removing cloth bag. The air inlet, the upper and lower ends of the ash hopper are open; it is characterized in that a smoke distribution device is provided at the air inlet of each dust removal bag, and the smoke distribution device is arranged inside the dust removal bag, and the smoke distribution device The device is a grid rectification device.

In the optimization of the utility model, the grid rectification device is composed of horizontal strip plates and vertical strip plates crossing each other, and the horizontal strip plates and vertical strip plates are all along the air inlet diameter of the dust bag. to arrange.

For further optimization, the height of the smoke distribution device does not exceed one-fifth of the height of the dust bag.

Further optimization, the inside of the ash hopper is provided with a deposition chamber with a small upper structure and a larger lower structure, an enlarged chamber with a larger upper structure and a smaller structure, and an ash discharge chamber with a larger upper structure and a smaller structure; the deposition chamber is arranged at the lower end of the enlarged chamber , the ash discharge chamber is set at the lower end of the deposition chamber.

Further optimization, the inside of the ash hopper is provided with a constant temperature heating device, and the outside of the ash hopper is provided with a thermal insulation layer.

Further optimization, the dust collector box is also provided with a compressed air inlet, and the compressed air inlet is provided with a pulse control valve.

For further optimization, a filter screen bracket is arranged inside the dust removal bag.

Principle of work of the present utility model and beneficial effect thereof are:

During the upward process, the flue gas first passes through the grid rectification device along the longitudinal channel inside the dust bag to adjust the wind direction and straighten the direction of the chaotic wind into the dust bag; The impact wear, especially the wear of the dust bag mouth, reduces the damage of the dust bag and prolongs its service life.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of a kind of bag filter of the present utility model;

Fig. 2 is the structural representation of ash hopper of the present utility model;

Fig. 3 is a structural schematic diagram of the utility model smoke distribution device;

Explanation of reference signs: dust collector box-1, dust removal cavity-2, dust removal bag-3, air outlet-31, air inlet-32, deposition chamber-33, expansion chamber-34, ash discharge chamber-35, Smoke distribution device-4, horizontal strip plate-41, vertical strip plate-42, constant temperature heating device-5, insulation layer-6, compressed air inlet-7, pulse control valve-8, filter screen support- 9. Ash bucket -10.

detailed description

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so as to make a clearer definition of the protection scope of the utility model.

Referring to Figure 1 to Figure 3 of the accompanying drawings, the utility model provides a bag filter, which includes a dust collector box 1, and a dust removal cavity 2 is provided inside the dust collector box 1; the dust removal cavity The lower part of the dust removal cavity 2 is provided with an ash hopper 10, and the upper part of the dust removal cavity 2 is provided with a number of dust removal bags 3, each dust removal bag 3 is provided with an air outlet 31, and the lower end of the dust removal bag 3 is provided with an air inlet. 32. The upper side of the dust collector box 1 is provided with a general air outlet, the lower side of the dust collector box 1 is provided with a general air inlet, and the upper and lower ends of the dust hopper 10 are open; it is characterized in that each dust collector The air inlet 32 of the cloth bag 3 is provided with a smoke distribution device 4, which is installed inside the dust bag 3, and the smoke distribution device 4 is a grid rectification device.

The working principle and beneficial effects of this specific embodiment are as follows: During the upward process, the flue gas first passes through the grid rectification device along the longitudinal passage inside the dust bag to adjust the wind direction, straighten the direction of the chaotic wind and enter the dust bag; Screening by the grid rectification device reduces the impact and wear of the flue gas on the dust bag, especially the wear of the mouth of the dust bag, which reduces the damage of the dust bag and prolongs its service life.

In the optimization of the utility model, the grid rectification device is composed of intersecting horizontal strip plates 41 and vertical strip plates 42, and the horizontal strip plates 41 and vertical strip plates 42 are all along the The air inlets 32 of 3 are radially arranged.

Further optimization, the inside of the ash hopper 10 is provided with a deposition chamber 33 with a small upper structure and a larger lower structure, an enlarged chamber 34 with a larger upper lower structure, and an ash discharge chamber 35 with a larger upper lower structure; the deposition chamber 33 is set At the lower end of the enlarged chamber 34 , the ash discharge chamber 35 is arranged at the lower end of the deposition chamber 33 . The ash hopper 10 of this structure can avoid raising dust inside the box body 1 of the dust collector.

For further optimization, a constant temperature heating device 5 is provided inside the ash hopper 10 , and an insulating layer 6 is provided outside the ash hopper 10 . This specific embodiment can prevent the collected dust from agglomerating and hardening when the temperature is low.

The box body of the dust collector is also provided with a compressed air inlet, and the compressed air inlet is provided with a pulse control valve. Compressed air is reversely pulsed into the dust-removing cloth bag 3 to facilitate cleaning of the dust adhered to the filter holes of the dust-removing cloth bag 3, so as to prevent the dust from clogging the filter holes and reducing the filtering effect.

For further optimization, a filter screen support 9 is provided inside the dust bag 3 . The filter screen support 9 mainly plays a supporting role to the dust bag.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and description are only preferred examples of the utility model, and the utility model is not limited by the above-mentioned preferred examples, and is not limited by the above-mentioned preferred examples. Under the premise of departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the protection scope of the utility model.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (6)

1. A bag filter, comprising a dust remover casing, the inside of the dust remover casing is provided with a dust removal cavity; the lower half of the dust removal cavity is provided with an ash hopper, and the upper half of the dust removal cavity There are a number of dust-removing cloth bags, each dust-removing cloth bag has an air outlet at the upper end, and an air inlet at the lower end of the dust-removing cloth bag. There is a total air inlet, and the upper and lower ends of the ash hopper are open; it is characterized in that a smoke distribution device is provided at the air inlet of each dust removal bag, and the smoke distribution device is arranged inside the dust removal bag. The gas distribution device is a grid rectification device, and the dust collector box is also provided with a compressed air inlet, and the compressed air inlet is provided with a pulse control valve. 2. A kind of bag filter according to claim 1, characterized in that, the grid rectification device is composed of horizontal strip plates and vertical strip plates crossing each other, the horizontal strip plates and the vertical strip plates The longitudinal strip plates are arranged radially along the air inlet of the dust bag. 3. A bag filter according to claim 1, characterized in that the height of the flue gas distribution device does not exceed one-fifth of the height of the dust bag. 4. A bag filter according to claim 1, characterized in that, inside the ash hopper, there are deposition chambers with upper and lower structures, enlarged chambers with upper and lower structures, and upper and lower structures. The ash discharge chamber; the deposition chamber is arranged at the lower end of the enlarged chamber, and the ash discharge chamber is arranged at the lower end of the deposition chamber. 5. A bag filter according to claim 1, characterized in that, a constant temperature heating device is provided inside the ash hopper, and an insulating layer is provided outside the ash hopper. 6. A bag dust collector according to claim 1, characterized in that a filter screen bracket is provided inside the dust bag.