Folding metal filter bag

Abstract

The utility model discloses a folding metal filter bag. The folding metal filter bag comprises metal filter cloth and a fixed bracket, the metal filter cloth is a shell which is formed by a cylindrical fold and has a gear-shaped section; the fixing support comprises an upper mounting base, a lower cover, metal rings, connecting steel bars and metal pressing bars, the upper mounting base and the lower cover are arranged at the upper end and the lower end of the metal filter cloth respectively, the multiple metal rings are arranged on the inner side of the metal filter cloth and abut against wave crests on the inner side of the metal filter cloth, and the connecting steel bars are located on the inner side of the metal filter cloth; the metal pressing strip is used for connecting the upper mounting seat with the lower cover and fixedly connected with the metal rings, is positioned on the outer side of the metal filter cloth, and is used for connecting the upper mounting seat with the lower cover to press the wave bottom on the outer side of the metal filter cloth. And the metal filter cloth is a shell with a gear-shaped section formed by cylindrical folds, so that the filtering area can be increased, the size of the dust remover is smaller, and the cost is saved. The wave bottom on the outer side of the metal filter cloth is pressed through the metal pressing strip, so that deformation is avoided during forward and reverse blowing, the structure is stable, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of dust removal equipment, and particularly relates to a folded metal filter bag. Background Art

[0002] A metal filter bag is a high-temperature dust removal device. When in use, it is fixed on the flower plate at the upper part of the dust removal box. The dusty high-temperature gas enters the dust-containing area and passes through the metal filter bag from outside to inside under the action of an induced draft fan. The dust particles are blocked on the outer surface of the metal filter bag, and the clean gas passes through the filter layer of the metal filter bag into the clean area outside the flange port, and then the gas is recycled or directly discharged through the chimney. As the dust cake accumulates thicker and thicker, the pressure difference of the metal filter bag becomes larger and larger; when the pressure difference of the metal filter bag reaches the designed pressure difference, the system automatically starts the back-blowing system, the pressure difference sensor or the electronic timer starts the pilot valve, and then the pilot valve opens the diaphragm valve to allow the compressed gas to be instantaneously sprayed into the inlet of the metal filter bag in the form of pulses. The instantaneous reverse air flow and the resulting air pressure will remove the dust cake adsorbed on the outer surface of the metal filter bag. After the dust cake detaches from the surface of the metal filter bag, it will fall into the ash hopper or other dust collection containers. After the dust cake is removed, the metal filter bag can start a new round of dust removal cycle. However, the existing metal filter bags are large in volume, which is not conducive to production and installation, and the production cost is relatively high. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a folded metal filter bag, which can increase the filtration area, make the dust remover smaller in volume, save costs, and at the same time has a stable structure, will not deform during both positive and reverse blowing, and improves the service life.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] A folded metal filter bag includes

[0006] a metal filter cloth, which is a cylindrical folded shell with a gear-shaped cross section;

[0007] a fixing bracket, which includes an upper mounting seat, a lower cover, a metal ring, a connecting steel bar and a metal pressing strip. The upper mounting seat and the lower cover are respectively arranged at the upper and lower ends of the metal filter cloth. A plurality of the metal rings are arranged inside the metal filter cloth and abut against the wave crests inside the metal filter cloth. The connecting steel bar is located inside the metal filter cloth and is used to connect the upper mounting seat and the lower cover and is connected and fixed with a plurality of the metal rings. The metal pressing strip is located outside the metal filter cloth and connects the upper mounting seat and the lower cover to press the wave bottoms outside the metal filter cloth.

[0008] A pleated metal filter bag according to an embodiment of the present invention has at least the following beneficial effects: The metal filter cloth forms a housing with a gear-shaped cross-section by cylindrical pleats, which can increase the filtration area, make the dust collector smaller in volume, and save costs. The fixing bracket is fixed to both ends of the metal filter cloth through the upper mounting seat and the lower cover, and then the inner side of the metal filter cloth is supported by connecting steel bars and metal rings, and the wave bottom on the outer side of the metal filter cloth is pressed tightly by metal pressing bars, so that it will not deform during positive and negative blowing, the structure is stable, and the service life is improved.

[0009] According to some embodiments of the present invention, the upper mounting seat is in the shape of a circular ring and is provided with a ventilation port in the middle.

[0010] Beneficially, the upper mounting seat being in the shape of a circular ring is beneficial for cooperating with the metal filter cloth, and the ventilation hole provided in the middle is used for ventilation.

[0011] According to some embodiments of the present invention, the bottom surface of the upper mounting seat is provided with a lower mounting groove for sleeving the end of the metal filter cloth.

[0012] Beneficially, the lower mounting groove provided on the bottom surface of the upper mounting seat is beneficial for sleeving and installing the end of the metal filter cloth.

[0013] According to some embodiments of the present invention, the lower cover is in the shape of a circle.

[0014] Beneficially, the lower cover being in the shape of a circle is beneficial for cooperating with the metal filter cloth.

[0015] According to some embodiments of the present invention, the top surface of the lower cover is provided with an upper mounting groove for sleeving the end of the metal filter cloth.

[0016] Beneficially, the upper mounting groove provided on the top surface of the lower cover is beneficial for sleeving and installing the end of the metal filter cloth.

[0017] According to some embodiments of the present invention, the upper mounting seat and the lower cover are connected and fixed to the metal filter cloth by brazing.

[0018] Beneficially, the joint of the brazing process is flat and smooth, and the sealing performance is good.

[0019] According to some embodiments of the present invention, the connecting steel bars and the metal pressing bars are connected and fixed to the upper mounting seat and the lower cover by welding, and the connecting steel bars are connected and fixed to the metal rings by welding.

[0020] Beneficially, the connection and fixation among the upper mounting seat, the lower cover, the connecting steel bars, the metal pressing bars, and the metal rings are ensured by welding.

[0021] According to some embodiments of the present invention, the metal pressing bars, the metal filter cloth, and the metal rings are connected and fixed by resistance welding.

[0022] Beneficially, it is conducive to connecting and fixing the metal strip, the metal filter cloth and the metal ring through resistance welding.

[0023] According to some embodiments of the present invention, the connecting steel bars are evenly distributed along the circumferential direction of the metal ring.

[0024] Beneficially, such an arrangement is conducive to firmly connecting the connecting steel bars to the metal ring and ensuring uniform support force on the metal filter cloth.

[0025] According to some embodiments of the present invention, the metal strips are evenly distributed along the outer circumferential direction of the metal filter cloth.

[0026] Beneficially, such an arrangement is conducive to evenly pressing the metal filter cloth by the metal strips and ensuring that the metal filter cloth does not deform during backwashing.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Schematic diagram of an embodiment of the present invention;

[0030] Figure 2 is Figure 1 Cross-sectional schematic diagram of;

[0031] Figure 3 is Figure 2 Schematic diagram of the metal filter cloth in;

[0032] Figure 4 is Figure 2 Schematic diagram of the metal strip in;

[0033] Figure 5 is Figure 2 Schematic diagram of the fixed bracket with the metal strip removed in;

[0034] Figure 6 is Figure 5 Schematic diagram of the other side of the upper cover in.

[0035] Reference numerals: metal filter cloth 100, upper mounting seat 110, lower cover 120, metal ring 130, connecting steel bar 140, metal pressing strip 150, vent 160, lower mounting groove 170, upper mounting groove 180. Detailed implementation mode

[0036] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0038] In the description of the present invention, the meaning of several is one or more, and the meaning of multiple is two or more. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, this is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation, connection and connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] The following reference Figures 1-6 A folding metal filter bag will be described in detail with a specific embodiment. It is understood that the following description is only an exemplary illustration and not a specific limitation of the invention.

[0041] As Figures 1-2 shown, a folding metal filter bag includes a metal filter cloth 100 and a fixing bracket.

[0042] Among them, the metal filter cloth 100 is a cylindrical folded sheet forming a housing with a gear-shaped cross-section; the fixed bracket includes an upper mounting seat 110, a lower cover 120, a metal ring 130, a connecting steel bar 140, and a metal pressing strip 150. The upper mounting seat 110 and the lower cover 120 are respectively arranged at the upper and lower ends of the metal filter cloth 100. A plurality of metal rings 130 are arranged inside the metal filter cloth 100 and abut against the crests on the inner side of the metal filter cloth 100. The connecting steel bar 140 is located inside the metal filter cloth 100 and is used to connect the upper mounting seat 110 and the lower cover 120 and is fixedly connected to the plurality of metal rings 130. The metal pressing strip 150 is located outside the metal filter cloth 100 and connects the upper mounting seat 110 and the lower cover 120 to press the troughs on the outside of the metal filter cloth 100. The metal filter cloth 100 is a cylindrical folded sheet forming a housing with a gear-shaped cross-section, which can increase the filtration area, make the volume of the dust collector smaller, and save costs. The fixed bracket is fixed to both ends of the metal filter cloth 100 through the upper mounting seat 110 and the lower cover 120, and then the inner side of the metal filter cloth 100 is supported by the connecting steel bar 140 and the metal ring 130, and the troughs on the outside of the metal filter cloth 100 are pressed by the metal pressing strip 150. In this way, it will not deform during both positive and reverse blowing, the structure is stable, and the service life is improved.

[0043] Specifically, as Figure 6 shown, the upper mounting seat 110 is in the shape of a circular ring and is provided with a ventilation port 160 in the middle. The upper mounting seat 110 being in the shape of a circular ring is beneficial for mating with the metal filter cloth 100, and the ventilation hole in the middle is used for ventilation. Moreover, the bottom surface of the upper mounting seat 110 is provided with a lower mounting groove 170 for sleeving the end of the metal filter cloth 100. The lower mounting groove 170 provided on the bottom surface of the upper mounting seat 110 is beneficial for sleeving and installing the end of the metal filter cloth 100.

[0044] Correspondingly, as Figure 5 shown, the lower cover 120 is in the shape of a circle. The lower cover 120 being in the shape of a circle is beneficial for mating with the metal filter cloth 100. In addition, the top surface of the lower cover 120 is provided with an upper mounting groove 180 for sleeving the end of the metal filter cloth 100. The upper mounting groove 180 provided on the top surface of the lower cover 120 is beneficial for sleeving and installing the end of the metal filter cloth 100.

[0045] It should be noted that the upper mounting seat 110 and the lower cover 120 are fixedly connected to the metal filter cloth 100 by brazing. The joint of the brazing process is flat, smooth, and has good sealing performance. The connecting steel bar 140 and the metal pressing strip 150 are fixedly connected to the upper mounting seat 110 and the lower cover 120 by welding, and the connecting steel bar 140 is fixedly connected to the metal ring 130 by welding. The connection and fixation among the upper mounting seat 110, the lower cover 120, the connecting steel bar 140, the metal pressing strip 150, and the metal ring 130 are ensured by welding.

[0046] The metal strip 150, the metal filter cloth 100, and the metal ring 130 are fixedly connected by resistance welding. Resistance welding is beneficial for the connection and fixation of the metal strip 150, the metal filter cloth 100, and the metal ring 130.

[0047] It can be understood that, as Figure 4 and Figure 5 shown, the connecting steel bars 140 are evenly distributed circumferentially along the metal ring 130. Such an arrangement is beneficial for the connecting steel bars 140 to be firmly connected to the metal ring 130, ensuring uniform support force on the metal filter cloth 100. The metal strip 150 is evenly distributed circumferentially along the outer side of the metal filter cloth 100. Such an arrangement is beneficial for the metal strip 150 to evenly press the metal filter cloth 100, ensuring that the metal filter cloth 100 does not deform during backwashing.

[0048] In the description of this specification, the description with reference to terms such as "one embodiment, some embodiments, illustrative embodiments, examples, specific examples, or some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0049] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those of ordinary skill in the art.

Claims

1. A folded metal filter bag, characterized in that, Comprising: A metal filter cloth (100), which is a cylindrical folded leaf forming a housing with a gear-shaped cross-section; A fixing bracket, including an upper mounting seat (110), a lower cover (120), a metal ring (130), a connecting steel bar (140) and a metal pressing strip (150). The upper mounting seat (110) and the lower cover (120) are respectively arranged at the upper and lower ends of the metal filter cloth (100). A plurality of the metal rings (130) are arranged inside the metal filter cloth (100) and abut against the wave crests on the inner side of the metal filter cloth (100). The connecting steel bar (140) is located inside the metal filter cloth (100) and is used to connect the upper mounting seat (110) and the lower cover (120) and is fixedly connected to a plurality of the metal rings (130). The metal pressing strip (150) is located outside the metal filter cloth (100) and connects the upper mounting seat (110) and the lower cover (120) to press the wave bottoms on the outside of the metal filter cloth (100).

2. The folded metal filter bag according to claim 1, wherein The upper mounting seat (110) is in the shape of an annular ring with a ventilation port (160) provided in the middle.

3. A folded metal filter bag according to claim 1, characterized in that, The bottom surface of the upper mounting seat (110) is provided with a lower mounting groove (170) for sleeving the end of the metal filter cloth (100).

4. A folded metal filter bag according to claim 1, characterized in that, The lower cover (120) is in the shape of a circle.

5. A folded metal filter bag according to claim 1, characterized in that, The top surface of the lower cover (120) is provided with an upper mounting groove (180) for sleeving the end of the metal filter cloth (100).

6. The pleated metal filter bag according to claim 1, characterized in that, The upper mounting seat (110) and the lower cover (120) are fixedly connected to the metal filter cloth (100) by brazing.

7. A folded metal filter bag according to claim 1, wherein, The connecting steel bar (140) and the metal pressing strip (150) are fixedly connected to the upper mounting seat (110) and the lower cover (120) by welding, and the connecting steel bar (140) is fixedly connected to the metal ring (130) by welding.

8. A folded metal filter bag according to claim 1, characterized in that, The metal pressing strip (150), the metal filter cloth (100) and the metal ring (130) are fixedly connected by resistance welding.

9. A folded metal filter bag according to claim 1, characterized in that, The connecting steel bars (140) are evenly distributed circumferentially along the metal ring (130).

10. A folded metal filter bag according to claim 1, wherein, The metal pressing strips (150) are evenly distributed circumferentially along the outside of the metal filter cloth (100).

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