Metal filter bag

Abstract

The utility model discloses a metal filter bag, it includes filter bag body, mounting piece, support frame, closing plate and fixed assembly, filter bag body is worn in dust catcher flower board, mounting piece is along the circumferential ring of filter bag body and is located in the top of filter bag body, and dust catcher flower board abuts at mounting piece one side close to filter bag body, support frame is along the length direction of filter bag body and is arranged in filter bag body, and is in abutment on the inner side wall of filter bag body, closing plate is capped in the bottom of filter bag body, fixed assembly includes fixed piece and locking piece, and one end of fixed piece is used for connecting dust catcher flower board, and the other end can fix filter bag body and dust catcher flower board through locking piece. The metal filter bag provided by the utility model can improve the installation strength and stability of itself, prevent powder leakage, thereby meeting the demand of efficient and stable operation of dust catcher.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, and in particular to a metal filter bag. Background Technology

[0002] In the field of industrial flue gas treatment, metal filter bags have become the core component to replace traditional non-metallic filter bags due to their high temperature resistance and corrosion resistance. They are widely used in dust collectors in industries such as power, metallurgy, and chemical engineering.

[0003] However, existing metal filter bags still have many technical problems during assembly with dust collector tube sheets and long-term operation: First, the metal filter bags lack a stable fixing structure when installed on the dust collector tube sheet, which makes them prone to loosening during long-term operation. This can lead to the relative position of the filter bag and the tube sheet shifting or even falling off, affecting the subsequent sealing and filtration effect. Second, most metal filter bags are single tubular structures. Under the impact of high-temperature flue gas or the weight of the filter bag itself, the inner wall of the metal filter bag is prone to collapse or deformation, which reduces the filtration area and service life. Third, the bottom of the metal filter bag is usually open, so during operation, some dust can easily leak directly from the bottom of the filter bag into the clean air chamber, causing the flue gas emissions to exceed the standard.

[0004] Therefore, there is an urgent need for a metal filter bag structure that can solve the problems of unstable filter bag fixation, easy internal deformation, and powder leakage at the bottom, so as to meet the requirements of efficient and stable operation of dust collectors. Utility Model Content

[0005] The purpose of this utility model is to provide a metal filter bag that can improve its installation strength and stability, prevent powder leakage, and thus meet the requirements of efficient and stable operation of dust collectors.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A metal filter bag comprising:

[0008] The filter bag body is installed through the tube sheet of the dust collector;

[0009] The mounting component is circumferentially disposed around the top of the filter bag body, and the dust collector tube sheet abuts against the side of the mounting component near the filter bag body.

[0010] A support frame extends along the length of the filter bag body and is disposed within the filter bag body, abutting against the inner wall of the filter bag body.

[0011] A sealing plate is used to seal the bottom end of the filter bag body;

[0012] The fixing component includes a fixing member and a locking member. One end of the fixing member is used to connect to the dust collector tube sheet, and the other end can fix the filter bag body and the dust collector tube sheet through the locking member.

[0013] Optionally, the fixing assembly further includes a pressure plate and a parallel washer. The parallel washer is disposed on the dust collector tube sheet. One end of the pressure plate abuts against the side of the mounting member away from the filter bag body, and the other end is sandwiched between the parallel washer and the locking member. The other end of the fixing member passes through the dust collector tube sheet, the parallel washer and the pressure plate from bottom to top, and is connected to the locking member.

[0014] Optionally, the locking member includes a cap that is threaded to the other end of the fixing member and abuts against the side of the pressure plate opposite to the mounting member.

[0015] Optionally, the fixing assembly further includes a seal sandwiched between the mounting component and the dust collector tube sheet.

[0016] Optionally, the outer side wall of the filter bag body is provided with at least two positioning pins spaced apart along its circumference, and the sealing member has a notch corresponding to the positioning pin. The sealing member is fitted onto the outer side of the filter bag body through the notch and the positioning pin.

[0017] Optionally, the sealing element is an annular structure, and the inner diameter of the sealing element is adapted to the outer diameter of the filter bag body.

[0018] Optionally, the filter bag body includes an upper filter bag, a lower filter bag, and a threaded connecting ring. The upper filter bag is coaxially connected to the lower filter bag via the threaded connecting ring, and the two ends of the threaded connecting ring along its own axial direction are respectively threaded to the upper filter bag and the lower filter bag.

[0019] Optionally, the outer peripheral wall of the threaded connecting ring is provided with at least two wrench adapter portions spaced apart along its own circumference.

[0020] Optionally, the number of the fixing members is at least four, and each of the fixing members is arranged at intervals along the circumference of the dust collector tube sheet.

[0021] Optionally, the support frame is a tubular frame structure or a grid frame structure.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides a metal filter bag, which includes a filter bag body, mounting parts, support frame, sealing plate and fixing components. The filter bag body is inserted into the dust collector tube sheet to achieve initial assembly of the filter bag and the dust collector. The mounting bracket is circumferentially positioned around the top of the filter bag body, with the dust collector tube sheet abutting against the mounting bracket near the filter bag body, thus providing axial restraint. A support frame extends along the length of the filter bag body and is installed inside the filter bag body, abutting against the inner wall of the filter bag body to support the inner wall and prevent collapse or deformation under high-temperature flue gas impact or its own weight. A sealing plate covers the bottom of the filter bag body to create a seal, preventing dust leakage from the bottom. The fixing assembly includes a fixing component and a locking component. One end of the fixing component connects to the dust collector tube sheet, and the other end, through the locking component, secures the filter bag body and the dust collector tube sheet, thereby improving the connection strength between the filter bag body and the dust collector tube sheet and avoiding the risk of loosening or detachment during long-term operation. The metal filter bag provided by this utility model can improve its installation strength and stability, prevent powder leakage, and thus meet the requirements of efficient and stable operation of dust collectors. Attached Figure Description

[0024] Fig. 1 This is a schematic diagram of the metal filter bag provided in an embodiment of the present utility model;

[0025] Fig. 2 This is a schematic diagram of the installation of the metal filter bag provided in this embodiment of the utility model;

[0026] Fig. 3 This is a top view of the metal filter bag provided in an embodiment of this utility model.

[0027] In the picture:

[0028] 100. Dust collector tube sheet; 1. Filter bag body; 2. Mounting parts; 3. Support frame; 4. Sealing plate; 5. Fixing components; 51. Fixing parts; 52. Locking parts; 53. Pressure plate; 54. Parallel washers. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] In the field of industrial flue gas treatment, metal filter bags have become the core component to replace traditional non-metallic filter bags due to their high temperature resistance and corrosion resistance. They are widely used in dust collectors in industries such as power, metallurgy, and chemical engineering.

[0034] However, existing metal filter bags still have many technical problems during assembly with dust collector tube sheets and long-term operation: First, the metal filter bags lack a stable fixing structure when installed on the dust collector tube sheet, which makes them prone to loosening during long-term operation. This can lead to the relative position of the filter bag and the tube sheet shifting or even falling off, affecting the subsequent sealing and filtration effect. Second, most metal filter bags are single tubular structures. Under the impact of high-temperature flue gas or the weight of the filter bag itself, the inner wall of the metal filter bag is prone to collapse or deformation, which reduces the filtration area and service life. Third, the bottom of the metal filter bag is usually open, so during operation, some dust can easily leak directly from the bottom of the filter bag into the clean air chamber, causing the flue gas emissions to exceed the standard.

[0035] Therefore, there is an urgent need for a metal filter bag structure that can solve the problems of unstable filter bag fixation, easy internal deformation, and powder leakage at the bottom, so as to meet the requirements of efficient and stable operation of dust collectors.

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] like Figs. 1-3 As shown, this embodiment provides a metal filter bag, which includes a filter bag body 1, an mounting component 2, a support frame 3, a sealing plate 4, and a fixing assembly 5. The filter bag body 1 is inserted into the dust collector tube sheet 100. The mounting component 2 is circumferentially disposed around the top of the filter bag body 1. The dust collector tube sheet 100 abuts against the side of the mounting component 2 near the filter bag body 1. The support frame 3 extends along the length of the filter bag body 1 and is disposed inside the filter bag body 1, abutting against the inner side wall of the filter bag body 1. The sealing plate 4 covers the bottom end of the filter bag body 1. The fixing assembly 5 includes a fixing component 51 and a locking component 52. One end of the fixing component 51 is used to connect to the dust collector tube sheet 100, and the other end can be fixed to the filter bag body 1 and the dust collector tube sheet 100 by means of the locking component 52.

[0038] In this embodiment, the filter bag body 1 is inserted through the dust collector tube sheet 100 to achieve initial assembly of the filter bag and the dust collector; the mounting member 2 is circumferentially arranged around the top of the filter bag body 1, and the dust collector tube sheet 100 abuts against the side of the mounting member 2 near the filter bag body 1, thereby axially limiting the filter bag body 1; the support frame 3 extends along the length of the filter bag body 1 and is disposed inside the filter bag body 1, abutting against the inner wall of the filter bag body 1, thereby providing support to the inner wall of the filter bag body 1 and preventing the filter bag body from being damaged. The filter bag body 1 collapses and deforms under the impact of high-temperature flue gas or its own weight; the sealing plate 4 covers the bottom end of the filter bag body 1 to form a seal, preventing dust from leaking from the bottom end of the filter bag body 1; the fixing component 5 includes a fixing member 51 and a locking member 52. One end of the fixing member 51 is used to connect to the dust collector tube sheet 100, and the other end can be fixed to the filter bag body 1 and the dust collector tube sheet 100 through the locking member 52, thereby improving the connection strength between the filter bag body 1 and the dust collector tube sheet 100 and avoiding the risk of loosening or falling off during long-term operation. Through the above settings, the metal filter bag of this embodiment can improve its installation strength and stability, prevent dust leakage, and thus meet the requirements of efficient and stable operation of the dust collector.

[0039] The specific structure of the metal filter bag is explained below:

[0040] Specifically, such as Figs. 1-3As shown, in this embodiment, the filter bag body 1 is a cylindrical structure, which enables the flue gas to flow evenly within the filter bag body 1, improving filtration efficiency; the mounting component 2 is a mounting flange to improve the installation stability of the filter bag body 1. In other embodiments, the filter bag body 1 is a square or polygonal cylindrical structure, and the mounting component 2 is an annular clamp or flange structure; that is, as long as the above functions can be achieved, the specific structure of the above components is not limited in detail here.

[0041] Specifically, the fixing component 5 also includes a pressure plate 53 and a parallel washer 54. The parallel washer 54 is disposed on the dust collector tube sheet 100. One end of the pressure plate 53 abuts against the side of the mounting member 2 away from the filter bag body 1, and the other end is sandwiched between the parallel washer 54 and the locking member 52. The other end of the fixing member 51 passes through the dust collector tube sheet 100, the parallel washer 54, and the pressure plate 53 from bottom to top, and is connected to the locking member 52. Through the above arrangement, not only is the connection strength and stability between the above components improved, but the force of the locking member 52 is also distributed and transmitted to the mounting member 2 through the pressure plate 53, and the flatness error between the mounting member 2 and the dust collector tube sheet 100 is eliminated through the parallel washer 54, so that the mounting member 2 is subjected to more uniform force, and the connection tightness between the filter bag body 1 and the dust collector tube sheet 100 is improved, avoiding deformation due to excessive local force. In this embodiment, the parallel washer 54 can be a flat washer or a spring washer, etc., and no further limitation is made here.

[0042] Specifically, the locking member 52 includes a cap, which is threaded to the other end of the fixing member 51 and abuts against the side of the pressure plate 53 away from the mounting member 2. The cap forms an axial clamping force to prevent the cap from loosening when the dust collector vibrates, which helps to improve the long-term reliability of the fixing component 5.

[0043] More specifically, in this embodiment, the fastener 51 includes a screw, one end of which abuts against the side of the mounting flange near the filter bag body 1, and the other end is threaded to a cap, thereby ensuring that the mounting flange and the dust collector tube sheet 100 fit tightly together, thereby improving the connection strength between the two.

[0044] Specifically, the fixing component 5 also includes a seal, which is sandwiched between the mounting component 2 and the dust collector tube sheet 100 to improve sealing and prevent dust-laden flue gas from leaking from the gap between the mounting component 2 and the dust collector tube sheet 100. The seal can be a rubber ring or a silicone ring, etc., and no further limitations are specified here.

[0045] More specifically, the seal is an annular structure, and the inner diameter of the seal is adapted to the outer diameter of the filter bag body 1, thereby eliminating the fitting gap between the seal and the filter bag body 1 and further improving the reliability of the seal.

[0046] Specifically, the outer wall of the filter bag body 1 is provided with at least two positioning pins spaced apart along its circumference. The sealing element has a notch corresponding to the positioning pin. The sealing element is fitted onto the outer side of the filter bag body 1 through the notch and the positioning pin. By assembling the positioning pin into the corresponding notch, the sealing element can be circumferentially positioned to ensure the installation stability of the sealing element and to avoid circumferential displacement of the sealing element during installation or operation, which would lead to sealing failure.

[0047] The positioning pin can be made of cylindrical pins or square pins, as long as it can achieve the above functions, and no further restrictions are imposed here.

[0048] Specifically, the filter bag body 1 includes an upper filter bag, a lower filter bag, and a threaded connecting ring. The upper filter bag is coaxially connected to the lower filter bag through the threaded connecting ring. The two ends of the threaded connecting ring along its own axial direction are respectively threaded to the upper filter bag and the lower filter bag, thereby realizing the detachable connection between the upper filter bag and the lower filter bag, which facilitates the transportation, installation, and subsequent maintenance and replacement of long-size metal filter bags.

[0049] More specifically, in this embodiment, the bottom end of the upper filter bag is provided with an external thread, the top end of the lower filter bag is provided with an internal thread, the inner wall of the threaded connection ring is provided with an internal thread section, and the outer wall is provided with an external thread section. The internal thread section is adapted to the external thread at the bottom end of the upper filter bag, and the external thread section is adapted to the internal thread at the top end of the lower filter bag, so as to facilitate the disassembly and maintenance of the filter bag body 1, and to improve the sealing performance and structural stability of the connection of the above components.

[0050] Specifically, the outer peripheral wall of the threaded connecting ring is provided with at least two wrench adapters spaced apart along its circumference. The wrench adapters are flat or polygonal protrusions, etc., which can provide a stable fulcrum for the wrench, making it convenient for operators to tighten the threaded connecting ring with the wrench and ensuring a firm connection between the upper and lower filter bags.

[0051] Specifically, the number of fasteners 51 is at least four, and each fastener 51 is spaced apart along the circumference of the dust collector tube sheet 100, so that the mounting part 2 fits more tightly with the dust collector tube sheet 100.

[0052] Specifically, the support frame 3 is a tubular frame structure or a mesh frame structure, which can effectively support the inner wall of the filter bag body 1, ensuring that the filter bag body 1 maintains a stable shape and preventing the metal filter bag from collapsing under the impact of high-temperature flue gas or its own gravity, thus preventing a reduction in filtration area or an increase in filtration resistance. It is understood that the specific structure of the above is not limited in much detail, as long as it can achieve the above-mentioned support function.

[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A metal filter bag, characterized in that, include: The filter bag body (1) is inserted into the tube sheet (100) of the dust collector. The mounting component (2) is circumferentially disposed around the top of the filter bag body (1), and the dust collector tube sheet (100) abuts against the side of the mounting component (2) near the filter bag body (1). A support frame (3) extends along the length of the filter bag body (1) and is disposed inside the filter bag body (1), abutting against the inner wall of the filter bag body (1). A sealing plate (4) is placed over the bottom of the filter bag body (1); The fixing component (5) includes a fixing member (51) and a locking member (52). One end of the fixing member (51) is used to connect to the dust collector tube sheet (100), and the other end can fix the filter bag body (1) and the dust collector tube sheet (100) through the locking member (52).

2. The metal filter bag according to claim 1, characterized in that, The fixing component (5) also includes a pressure plate (53) and a parallel washer (54). The parallel washer (54) is disposed on the dust collector tube sheet (100). One end of the pressure plate (53) abuts against the side of the mounting component (2) away from the filter bag body (1), and the other end is sandwiched between the parallel washer (54) and the locking component (52). The other end of the fixing component (51) passes through the dust collector tube sheet (100), the parallel washer (54) and the pressure plate (53) from bottom to top, and is connected to the locking component (52).

3. The metal filter bag according to claim 2, characterized in that, The locking member (52) includes a cap that is threaded to the other end of the fixing member (51) and abuts against the side of the pressure plate (53) away from the mounting member (2).

4. The metal filter bag according to claim 1, characterized in that, The fixing component (5) also includes a seal, which is sandwiched between the mounting component (2) and the dust collector tube sheet (100).

5. The metal filter bag according to claim 4, characterized in that, The outer side wall of the filter bag body (1) is provided with at least two positioning pins spaced apart along its circumference. The sealing member has a notch corresponding to the positioning pin. The sealing member is fitted onto the outer side of the filter bag body (1) through the notch and the positioning pin.

6. The metal filter bag according to claim 4, characterized in that, The sealing element is an annular structure, and the inner diameter of the sealing element is adapted to the outer diameter of the filter bag body (1).

7. The metal filter bag according to claim 1, characterized in that, The filter bag body (1) includes an upper filter bag, a lower filter bag and a threaded connecting ring. The upper filter bag is coaxially connected to the lower filter bag through the threaded connecting ring. The two ends of the threaded connecting ring along its own axial direction are respectively threaded to the upper filter bag and the lower filter bag.

8. The metal filter bag according to claim 7, characterized in that, The outer peripheral wall of the threaded connecting ring is provided with at least two wrench adapters spaced apart along its circumference.

9. The metal filter bag according to claim 1, characterized in that, The number of the fixing members (51) is at least four, and each of the fixing members (51) is arranged at circumferential intervals along the tube sheet (100) of the dust collector.

10. The metal filter bag according to any one of claims 1-9, characterized in that, The support frame (3) is a tubular frame structure or a grid frame structure.

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