CN210964474U

CN210964474U - Bag-type dust collector

Info

Publication number: CN210964474U
Application number: CN201921863888.6U
Authority: CN
Inventors: 汪鎏; 朱晨军; 潘峰
Original assignee: Keda Clean Energy Co Ltd
Current assignee: Keda Clean Energy Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-07-10
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a bag-type dust collector belongs to the industrial dust removal field. The cyclone separator is arranged in the shell and positioned between the filter bag assembly and the ash discharge port, and the air inlet main pipe is connected with an inlet of the cyclone separator. The utility model discloses can remove dust in advance to it before dirty gas contact filter bag, can effectual reduction filter bag's burden, improve equipment's life, reduce cost has simple structure, reasonable in design, easily manufacturing's advantage.

Description

Bag-type dust collector

Technical Field

The utility model belongs to the industrial dust removal field, more specifically say, relate to a sack cleaner.

Background

The bag-type dust collector is a dry dust filter. It is suitable for trapping fine, dry, non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, the filtering action of the fiber fabric is utilized to filter the dust-containing gas, when the dust-containing gas enters the bag-type dust remover, the dust with large particles and large specific gravity is settled down under the action of gravity and falls into the dust hopper, the dust is blocked when the gas containing fine dust passes through the filter material, so that the gas is purified, and the bag-type dust removing technology is mature dust collecting and gas purifying technology and becomes the main application technology of industrial dust removal in China.

In the system of high temperature reaction, can set up a high temperature cyclone behind the high temperature reactor export, remove dust for the first time to the big viscosity gas that the temperature is up to more than 600 ℃, reduce gaseous dusty concentration, protect subsequent cooling indirect heating equipment, the sack cleaner generally sets up in the position of 150 ~ 180 ℃ in the temperature interval behind the cooling indirect heating equipment, because cyclone separation effect is relatively poor under the high temperature state, the gaseous dust concentration that gets into the sack cleaner is still higher relatively, lead to the load of terminal sack cleaner great. In addition, the air inlet of the traditional bag-type dust collector generally leads to air inlet from a single-side air inlet, dust-containing smoke directly passes through the filter bag to filter dust, the filtered gas is discharged from an air outlet, the single-side air inlet has the problem of uneven cloth gas, so that the loads of the filter bags at different positions are different, the loads of the filter bags are further aggravated, and the service life of equipment is influenced.

The bag-type dust collector in the prior art considers the problem of different filter bag loads caused by uneven air inlet, for example, the Chinese patent application number is: CN201810869727.1, published date: the patent application of the invention of 2018, 11 and 20 discloses a bag-type dust collector, which comprises a machine body, wherein an air purifying chamber, a dust removing chamber and a dust collecting chamber are arranged in the machine body, a blowing mechanism is arranged in the air purifying chamber, an air purifying outlet pipe is arranged on one side of the air purifying chamber, a filter bag is arranged in the dust removing chamber, an annular air inlet pipe is arranged at the bottom of the filter bag, and an air inlet pipe is arranged on one side of the annular air inlet pipe. This scheme has mainly considered from the unilateral admit air exist the gas distribution inhomogeneous, leads to the different problem of filter bag load of different positions, but has not considered under the high temperature state, and gas-solid separation effect is limited, and the dust gas that contains great concentration directly passes through the filter bag, and the net gas exit tube is discharged after the filtration, has increased the burden of filter bag.

Disclosure of Invention

1. Problems to be solved

The utility model provides a sack cleaner, the gaseous dusty concentration after its aim at solved current high temperature cyclone for the first time removes dust is still great relatively, can increase the load of sack cleaner, reduces equipment life's problem. This sack cleaner has increased dust removal structure in advance in traditional sack cleaner, and the great dust of granule wherein is filtered in advance before gas contacts the filter bag to effectively reduce the filterable burden of filter bag, prolong the life of equipment.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A bag-type dust collector comprises a shell, a main air inlet pipe, an ash discharge port, a filter bag assembly and a cyclone separator; the cyclone separator is arranged in the shell and positioned between the filter bag assembly and the ash discharge port, and the air inlet main pipe is connected with an inlet of the cyclone separator.

Further, the cyclone is provided with one or more.

Furthermore, the cyclone separator is provided with one cyclone separator which is positioned right above the ash discharge port.

Furthermore, the cyclone separator is provided with a plurality of cyclone separators which are uniformly distributed in the shell in the circumferential direction by taking the ash discharge port as the center.

Furthermore, the shell is provided with an air inlet ring pipe in a surrounding mode, the air inlet main pipe is communicated with the air inlet ring pipe, and each cyclone separator is communicated with the air inlet ring pipe through an air inlet branch pipe.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a sack cleaner has add cyclone as dust collector in advance, and dusty gas gets into earlier and removes dust in advance in the cyclone, detaches the large granule dust in the gas, reduces gaseous dusty concentration, carries out final dust removal by the filter bag again, and the granule dust direct contact filter bag in the gas is removed dust by the filter bag absorption, can alleviate the filterable burden of filter bag.

(2) The utility model discloses a bag-type dust collector, be provided with the air inlet ring canal that can the multiple spot admits air all around outside the casing, dirty gas is through the even a plurality of cyclone that enter into of air inlet ring canal, wherein, every cyclone all removes dust in advance, can be faster more effectual the dirty concentration of gaseous reduction, thereby alleviate the load of filter bag, and use through a plurality of cyclone of air inlet ring canal cooperation, the cloth gas homogeneity effect has further been improved, make the working pressure of filter bag the same, thereby further alleviateed the load of filter bag, the life of extension equipment.

Drawings

FIG. 1 is a schematic diagram of a conventional bag-type dust collector;

FIG. 2 is a schematic view of the bag-type dust collector of the present invention;

fig. 3 is a schematic cross-sectional view of the bag-type dust collector of the present invention.

In the figure: 1. a housing; 2. an air inlet ring pipe; 3. an exhaust port; 4. an ash discharge port; 5. a cyclone separator; 6. a filter bag assembly; 7. a partition plate; 8. an intake manifold.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings.

Fig. 1 shows a conventional bag-type dust collector, in which arrows indicate gas traces, and the bag-type dust collector includes a housing 1, an exhaust port 3, an ash discharge port 4, a filter bag assembly 6, and a partition 7.

The housing 1 is of a generally pot-shaped construction with a funnel-shaped bottom. The lower side of the housing 1 has an inlet port, the top side has an outlet port 3, and the bottom has an outlet port 4. The filtering function of the bag-type dust collector is realized by a filter bag assembly 6 arranged in the bag-type dust collector, the filter bag assembly 6 is arranged in the shell 1 through a circular partition plate 7, a plurality of holes are uniformly formed in the partition plate 7, and each hole is correspondingly provided with one filter bag assembly 6.

The working process of the traditional bag-type dust collector is as follows: dusty gas is let into in the casing 1 by the air inlet, adsorbs through filter bag subassembly 6 and removes dust, gets rid of the dust in the gas, and the clean gas after the filtration is discharged from gas vent 3, and the dust of being filtered and separated by filter bag subassembly 6 falls into the sack cleaner bottom and is discharged by row ash mouth 4 to accomplish the purification to dusty gas.

According to the working process, the dust removal effect of the traditional bag-type dust remover is completely determined by the filter bag, but in actual work, the dust removal working temperature of the high-temperature cyclone separator in the front-section process of the bag-type dust remover is higher than 600 ℃, the dust removal effect is relatively poor, so that the dust concentration of gas introduced into the bag-type dust remover is still high, and the burden on the filter bag caused by directly removing dust by the filter bag is large. In addition, the air is concentrated and fed through the single air inlet, the air flow entering the bag-type dust collector is relatively concentrated and not easy to disperse, so that the air flow is uneven, the working environments of the filter bags at different positions are different, the working pressure of some filter bags is high, the working pressure of some filter bags is low, some filter bags can be blocked and cannot work in the past, the phenomenon that some filter bags can be used is caused, and the use burden of the filter bags is further aggravated.

Examples

In order to improve the filtering environment of the bag-type dust collector for high-temperature dust gas, the embodiment provides the bag-type dust collector, and a pre-dust-collecting device is additionally arranged on the basis of the traditional bag-type dust collector.

The bag-type dust collector of this embodiment is provided with a cyclone 5 in the housing 1. Specifically, as shown in fig. 2, the air inlet on the housing 1 is communicated with the inlet of the cyclone separator 5, the dust-containing gas enters the cyclone separator 5 through the air inlet, the gas can flow downward from the cylinder of the cyclone separator 5 toward the cone along the wall surface, under the action of centrifugal force, larger solid particles with larger inertia are thrown to the outer wall and separated, so that the larger solid particles fall downward along the wall surface and are discharged from the dust discharge port 4, the dust-containing concentration of the gas is reduced, the purpose of pre-dedusting is achieved, the dust-containing concentration of the gas contacting with the filter bag is smaller, the working environment of the filter bag is improved, the working load of the filter bag is reduced, the cyclone separator 5 is located inside the bag dust collector, the working temperature is in the range of 150-180 ℃, and the dedusting effect is relatively good. One or more cyclone separators 5 may be used, and when one is used, it may be disposed directly above the ash discharge port 4; when a plurality of cyclones 5 are used, the plurality of cyclones 5 may be arranged in a circumferential direction. This embodiment employs a multiple cyclone 5 arrangement as shown in figure 3.

It should be noted that although the cyclone separator 5 is added to remove large particle dust, the air intake mode of one-side air intake concentrates the air intake, so that the distribution of the dust-containing gas is not uniform, and the air pressure in some places is large, and the air pressure in some places is small, so that the working pressures of the filter bags are different, therefore, the air intake mode of the dust-containing gas is further improved to improve the uniformity of air distribution.

With reference to fig. 2 and 3, in addition to the above, the air intake structure is improved by arranging an air intake ring pipe 2 around the housing 1, wherein the outer side of the air intake ring pipe is communicated with an air intake main pipe, and the inner side of the air intake ring pipe is communicated with the housing 1 through a plurality of pipelines along the circumferential direction to form a plurality of air intake points. In order to match with a multi-point air inlet mode, the same number of cyclone separators 5 are also arranged in the shell 1, each cyclone separator 5 is connected with one air inlet point, and the plurality of cyclone separators 5 are uniformly distributed in the shell 1 in the circumferential direction by taking the ash discharge port 4 as the center.

Above-mentioned sack cleaner is at the during operation, dusty gas advances to enter into air inlet ring pipe 2 through the main pipe of admitting air, and at air inlet ring pipe 2 internal diffusion, from the even a plurality of cyclone 5 that enter into in the casing 1 all around, every cyclone 5 all carries out dust removal work in advance, the gas of less concentration after the dust removal in advance more evenly contacts with filter bag subassembly 6 again, further remove dust, thereby on cyclone 5 basis of removing dust in advance, further improve the homogeneity of admitting air, can reduce the work load of filter bag better, and improve the work efficiency of filter bag, also be favorable to improving the effect of removing dust in advance.

The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.

Claims

1. The utility model provides a sack cleaner, includes casing (1), admits air and is responsible for, arranges ash mouth (4) and filter bag subassembly (6), its characterized in that: also comprises a cyclone separator (5); the cyclone separator (5) is arranged in the shell (1) and is positioned between the filter bag assembly (6) and the ash discharge port (4), and the air inlet main pipe is connected with an inlet of the cyclone separator (5).

2. The bag-type dust collector of claim 1, wherein: the cyclone separator (5) is provided with one or more than one.

3. The bag-type dust collector of claim 2, wherein: the cyclone separator (5) is provided with one cyclone separator and is positioned right above the ash discharge port (4).

4. The bag-type dust collector of claim 2, wherein: the cyclone separators (5) are provided with a plurality of cyclone separators (5) which are circumferentially and uniformly distributed in the shell (1) by taking the ash discharge port (4) as a center.

5. The bag-type dust collector of claim 4, wherein: the shell (1) is provided with an air inlet ring pipe (2) in a surrounding mode, the air inlet main pipe is communicated with the air inlet ring pipe (2), and each cyclone separator (5) is communicated with the air inlet ring pipe (2) through an air inlet branch pipe (8).