CN210356431U - Long-life metal filter bag - Google Patents
Long-life metal filter bag Download PDFInfo
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- CN210356431U CN210356431U CN201922064544.5U CN201922064544U CN210356431U CN 210356431 U CN210356431 U CN 210356431U CN 201922064544 U CN201922064544 U CN 201922064544U CN 210356431 U CN210356431 U CN 210356431U
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Abstract
The utility model discloses a long-life metal filter bag, including the filter bag barrel, the one end of filter bag barrel is provided with the bottom, and the other end outside is provided with fine and close protective sheath, and fine and close protective sheath is provided with the flange near the one end of filter bag barrel tip, and flange mounting installs bag cage skeleton in the other end of filter bag barrel, and bag cage skeleton contacts with the inner wall of filter bag barrel, and the one end of bag cage skeleton is installed at the bottom body, and the other end is installed at the flange body. The utility model relates to a long-life metal filter bag has solved current metal filter bag life weak point, has welded the problem that causes weld leakage and mechanical properties weak area with the flange.
Description
Technical Field
The utility model belongs to the technical field of the flue gas is handled, concretely relates to long-life metal filter bag.
Background
In recent years, the development of heavy chemical industries such as electric power, chemical industry, metallurgy, building materials and the like in China is rapid, and meanwhile, the problem of serious atmospheric environmental pollution is also brought. The atmospheric pollutants are mainly smoke dust type particles in the smoke. Currently, the main measure for preventing such pollution is to remove dust and purify the gas before the gas is discharged. According to the latest standard, the emission limit of particulate matter in key areas is 10mg/m from 11 months and 1 day in 20193The emission limit of individual areas even reaches 5mg/m3。
At present, the existing gas purification methods include cyclone dust removal, electric dust removal and bag type dust removal. The traditional cyclone dust removal and electric dust removal modes are difficult to reach 10mg/m3Or 5mg/m3Ultra-low emission requirements; the bag type dust removal adopts a high-molecular filter bag or a metal filter bag, when the high-molecular filter bag is adopted, a filter medium of smoke dust particles is made of a high-molecular material, but the high-molecular filter bag has limited temperature resistance, the smoke gas needs to be cooled and then subjected to dust removal, and the bag burning is easy to happen under the working condition of sudden high temperature, so that the service life is short; when the metal filter bag is used, the metal filter material is directly welded with the flange, but welding leakage and a mechanical property weak area are easily caused, so that the service life of the metal filter bag is shortened.
Therefore, a novel dust removal filter bag with high precision, high temperature resistance, wear resistance and long service life is urgently needed to be researched.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a long-life metal filter bag has solved current metal filter bag life weak point, has welded the problem that causes weld leakage and mechanical properties weak area with the flange.
The utility model discloses the technical scheme who adopts is a long-life metal filter bag, including the filter bag barrel, the one end of filter bag barrel is provided with the bottom, and the other end outside is provided with fine and close protective sheath, and fine and close protective sheath is provided with the flange near the one end of filter bag barrel tip, and the flange mounting is at the other end of filter bag barrel.
The utility model discloses a characteristics still lie in:
the outer diameter of the flange is larger than that of the filter bag cylinder.
The filter bag cylinder is made of metal filter materials.
The dense protective sheath comprises a dense metal piece.
The bottom cover is of a square or round metal structure.
A bag cage framework is arranged in the filter bag barrel and is in contact with the inner wall of the filter bag barrel, one end of the bag cage framework is arranged on the bottom cover body, and the other end of the bag cage framework is arranged on the flange body.
The bag cage framework is cage-shaped and comprises N metal strips, the metal strips are arranged on the inner wall of the bag cage barrel along the axial direction of the filter bag barrel, the inner sides of two ends of the N metal strips are respectively provided with a support ring, and the two support rings are respectively arranged on the bottom cover body and the flange body; a plurality of support rings which are arranged in parallel are evenly arranged along the inner sides of the N metal strip bodies.
The bag cage framework is cylindrical and is a metal punching plate or a metal punching mesh; two ends of the metal punching plate are respectively arranged on the bottom cover body and the flange body or two ends of the metal punching net are respectively arranged on the bottom cover body and the flange body.
The utility model has the advantages that:
the utility model relates to a long-life metal filter bag, simple structure, convenient installation and maintenance, good sealing performance, effective reduction of air leakage and improvement of dust removal efficiency; the utility model relates to a long-life metal filter bag, have high temperature resistant, corrosion-resistant, intensity is high, the characteristic that the wearability is good, still have running resistance little, the energy consumption is low, long service life, discharge tail gas temperature high, can carry on waste heat recovery, intercept flue gas efficient, can realize advantage such as online/off-line deashing, can not cause secondary pollution to the environment; the utility model relates to a long-life metal filter bag electric conductivity is good, can avoid the accident that static arouses, moreover, can avoid filter media weld leakage and the weak area of mechanical properties when the metal filter media is directly welded with the flange in the use, also can prevent simultaneously that the pulse deashing from blowing the damaged filter bag that causes partially, still can prevent that metal filter bag barrel condensation is harmful or corrodes the medium, causes destruction to shorten life; the utility model relates to a long-life metal filter bag can be applied to industry flue gas dust removal field, especially high temperature, the harsh operating mode condition of strong corrosion such as chemical industry, metallurgy, building materials, electric power, oil, new forms of energy.
Drawings
Fig. 1 is a schematic structural diagram of the long-life metal filter bag of the present invention.
In the figure, 1, a filter bag cylinder, 2, a compact protective sleeve, 3, a bottom cover, 4, a flange, 5, a sealing gasket, 6, a bag cage framework, 7, a connecting ring and 8, a flower plate.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a long-life metal filter bag, the structure is shown in figure 1, including filter bag barrel 1, the one end of filter bag barrel 1 is provided with circular bottom 3, and the other end outside is provided with fine and close protective sheath 2, and fine and close protective sheath 2 is close to the one end of 1 tip of filter bag barrel and is provided with flange 4, and flange 4 installs the other end at filter bag barrel 1, installs bag cage skeleton 6 in the filter bag barrel 1, and bag cage skeleton 6 contacts with the inner wall of filter bag barrel 1, and the one end of bag cage skeleton 6 is installed at bottom 3 body, and the other end is installed at flange 4.
Preferably, the outer diameter of the flange 4 is larger than that of the filter bag cylinder 1; the filter bag cylinder 1 is prepared from a metal filter material, and the metal filter material can be any one of metal fiber felt, sintered metal powder, a multi-layer metal net and felt net composite; the metal filter material has high integral strength, uniform pore diameter, good air permeability and high temperature resistance; therefore, the filter bag can continuously and stably run under the working conditions of high temperature, high flow and higher requirement on the filtering precision;
the compact protective sleeve 2 comprises a compact metal piece; wherein, the length of the compact protective sleeve 2 along the axial direction of the filter bag cylinder 1 is 10-300 mm; the bottom cover 3 is of a square or round metal structure.
Preferably, the bag cage framework 6 is cage-shaped, the bag cage framework 6 comprises N metal strips, the metal strips are arranged on the inner wall of the filter bag barrel body 1 along the axial direction of the filter bag barrel body, support rings are respectively arranged on the inner sides of two ends of the N metal strips, and the two support rings are respectively arranged on the bottom cover 3 body and the flange 4 body; a plurality of support rings which are arranged in parallel are evenly arranged along the inner sides of the N metal strip bodies, and the support rings of the metal strip bodies are parallel to the support rings at the end parts of the metal strips.
The bag cage framework 6 is cylindrical, and the bag cage framework 6 is a metal punching plate or a metal punching net; two ends of the metal punching plate are respectively arranged on the bottom cover 3 body and the flange 4 body or two ends of the metal punching net are respectively arranged on the bottom cover 3 body and the flange 4 body.
The utility model relates to a long-life metal filter bag, the theory of operation as follows:
firstly, welding a bag cage framework 6 according to actual needs, sleeving a filter bag cylinder 1 on the bag cage framework 6, selecting a plurality of filter bag cylinders 1 according to specific working conditions in the actual use process, welding adjacent filter bag cylinders 1 through a connecting ring 7, welding a bottom cover 3 at the end of one filter bag cylinder 1 at the tail end, and welding the end of the bag cage framework 6 on the body of the bottom cover 3, so as to increase the length of the filter bag cylinder 1; wherein, the connecting ring 7 is of a metal structure; then welding a compact protective sleeve 2 at the outer side of the end part of the other filter bag cylinder 1 positioned at the tail end, welding a flange 4 at the end part of the compact protective sleeve 2, welding the flange 4 at the end part of the filter bag cylinder 1, and welding the end part of a bag cage framework 6 at the flange 4 body; the bag cage framework 6 can support the filter bag cylinder 1, so that the service life of the metal filter bag is prolonged;
when the metal filter bag is used, firstly, the filter bag cylinder 1 is arranged in a hole of a pattern plate 8 in a dust remover, so that the flange 4 is clamped on the surface of the pattern plate 8, and the pattern plate 8 can support the metal filter bag; in order to effectively improve the sealing performance, a sealing gasket 5 can be arranged between the flange 4 and the flower plate 8; wherein, the sealing gasket 5 can be a ceramic gasket;
the working process of the metal filter bag mainly comprises a dust removal process and a pulse ash removal process. (1) In the dust removal process, when dust-containing gas passes through the metal filter bag, dust is adsorbed on the outer surface of the filter bag cylinder 1 or isolated outside the filter bag cylinder 1, and purified gas is discharged from the inside of the metal filter bag; (2) in the process of pulse dust removal, when the metal filter bags are used, a blowing pipe is arranged above each metal filter bag and is connected with a pulse dust removal compressed air source through a pulse valve; after a certain filtering period, or when the resistance of the metal filter bag reaches a certain value, the pulse valve is opened under the action of a pulse signal, reverse high-pressure airflow is sprayed out from the spraying opening at a very high speed, the high-pressure sprayed air enters the metal filter bag, the filter bag expands rapidly to cause impact vibration, and dust adsorbed on the outer surface of the metal filter bag is blown down into a dust hopper below the dust remover.
The dense protective sheath 2 functions as: (1) the compact protective sleeve 2 is smaller than the flange 4 in thickness and is easier to weld with a non-compact filter bag cylinder 1, the filter bag cylinder 1 and the flange 4 are welded through the compact protective sleeve 2, and the problems of welding leakage and a mechanical property weak area of the filter bag cylinder 1 when the filter bag cylinder 1 and the flange 4 are directly welded are solved; (2) the compact protective sleeve 2 can also prevent the filter bag cylinder 1 from being damaged due to air flow deflection during pulse ash removal; (3) the hot air in the flow field of the filter bag cylinder body 1 and the cold air in the pulse valve can generate liquid water when impacting alternately, the compact protective sleeve 2 can effectively prevent the filter bag cylinder body 1 from being damaged due to harmful or corrosive medium condensation, and the service life of the metal filter bag is effectively prolonged.
Claims (8)
1. The utility model provides a long-life metal filter bag, its characterized in that, includes filter bag barrel (1), the one end of filter bag barrel (1) is provided with bottom (3), and the other end outside is provided with fine and close protective sheath (2), the one end that fine and close protective sheath (2) are close to filter bag barrel (1) tip is provided with flange (4), the other end at filter bag barrel (1) is installed in flange (4).
2. The long life metal filter bag according to claim 1, wherein said flange (4) has an outer diameter larger than the outer diameter of the filter bag cylinder (1).
3. The long life metal filter bag according to claim 1, wherein said filter bag cartridge (1) is made of metal filter material.
4. The long life metal filter bag according to claim 1, wherein said dense protective sleeve (2) comprises dense metal.
5. The long life metal filter bag according to claim 1, wherein said bottom cover (3) is of square or round metal construction.
6. The long-life metal filter bag of claim 1, wherein a bag cage frame (6) is installed in the filter bag cylinder (1), the bag cage frame (6) is in contact with the inner wall of the filter bag cylinder (1), one end of the bag cage frame (6) is installed on the body of the bottom cover (3), and the other end of the bag cage frame is installed on the body of the flange (4).
7. The long-life metal filter bag of claim 6, wherein said bag cage frame (6) is in the shape of a cage, said bag cage frame (6) comprises N metal strips, said metal strips are installed on the inner wall of the filter bag cylinder (1) along the axial direction thereof, the inner sides of the two ends of the N metal strips are respectively provided with a support ring, and the two support rings are respectively installed on the bottom cover (3) body and the flange (4) body; and a plurality of support rings arranged in parallel are uniformly arranged along the inner sides of the N metal strip bodies.
8. The long life metal filter bag according to claim 6, wherein said bag cage frame (6) is cylindrical, said bag cage frame (6) is a metal punched plate or a metal punched mesh;
two ends of the metal punching plate are respectively arranged on the bottom cover (3) body and the flange (4) body, or two ends of the metal punching net are respectively arranged on the bottom cover (3) body and the flange (4) body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922064544.5U CN210356431U (en) | 2019-11-26 | 2019-11-26 | Long-life metal filter bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922064544.5U CN210356431U (en) | 2019-11-26 | 2019-11-26 | Long-life metal filter bag |
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| Publication Number | Publication Date |
|---|---|
| CN210356431U true CN210356431U (en) | 2020-04-21 |
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| CN201922064544.5U Active CN210356431U (en) | 2019-11-26 | 2019-11-26 | Long-life metal filter bag |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307436A (en) * | 2021-11-12 | 2022-04-12 | 西安菲尔特金属过滤材料股份有限公司 | Long-period efficient filtering metal filter bag and manufacturing method thereof |
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2019
- 2019-11-26 CN CN201922064544.5U patent/CN210356431U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307436A (en) * | 2021-11-12 | 2022-04-12 | 西安菲尔特金属过滤材料股份有限公司 | Long-period efficient filtering metal filter bag and manufacturing method thereof |
| CN114307436B (en) * | 2021-11-12 | 2022-12-27 | 西安菲尔特金属过滤材料股份有限公司 | Long-period efficient filtering metal filter bag and manufacturing method thereof |
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