Spliced primary-secondary filter bag

Abstract

The utility model relates to a spliced primary and secondary filter bag, including the mother bag and the sub -pocket, the mother bag is the tubular structure of both ends opening, the mother bag includes the mother bag bag body, and the mother bag bag head at the upper end of mother bag bag body, the bottom of mother bag bag body is provided with the first positioning ring, the sub -pocket is the tubular structure of upper end opening, lower end closed, the open end of sub -pocket is installed in the bottom of mother bag, and the sub -pocket includes the sub -pocket bag body, sets up the sub -pocket bag head at the upper end of sub -pocket bag body and sets up the bag bottom at the bottom of sub -pocket bag body, and the sub -pocket bag head includes the second bag head piece and the second positioning ring that wraps in the second bag head piece, when assembling the sub -pocket with the mother bag, the bottom of mother bag bag body wraps outside the sub -pocket bag head and the first positioning ring is stuck in the bottom of the second positioning ring, the utility model discloses the filter bag is designed as the structure of splicing type of mother bag and sub -pocket, can effectively reduce the use cost of filter bag.

Description

Technical Field

[0001] This utility model belongs to the technical field of air filtration filter bags, specifically relating to a spliced ​​mother-daughter filter bag. Background Technology

[0002] With the rapid development of industrial production, exhaust gas dust filtration methods are also constantly being updated and upgraded. Currently, the main types of air dust filtration on the market are as follows: (1) electrostatic precipitator; (2) wet dust collector; (3) cartridge dust collector; (4) bag filter. Considering environmental protection investment and ease of operation of dust collectors, most companies will give priority to bag filters.

[0003] Filter bags are the "heart" of baghouse dust collectors; their quality determines the filtration accuracy and efficiency of the collector. Filter bags frequently fail during use due to factors such as changes in operating conditions, incorrect material selection, or design flaws in the internal airflow of the dust collector. In most cases, damage occurs near the bottom of the filter bag, typically within 1 meter of the bottom. Since most existing filter bag housings are one-piece structures, damage to the bottom portion necessitates replacing the entire bag, directly increasing operating costs. Utility Model Content

[0004] The purpose of this invention is to provide a spliced ​​mother-daughter filter bag to solve the problem of high filter bag usage costs.

[0005] The spliced ​​mother-daughter filter bag of this utility model is implemented as follows:

[0006] A type of interlocking mother-daughter filter bag, including

[0007] The mother bag is a cylindrical structure with openings at both ends. The mother bag includes a mother bag body and a mother bag head located at the upper end of the mother bag body. A first positioning rope loop is provided at the bottom of the mother bag body.

[0008] The sub-bag is a cylindrical structure with an open top and a closed bottom. The open end of the sub-bag is installed at the bottom of the mother bag. The sub-bag includes a sub-bag body, a sub-bag head located at the upper end of the sub-bag body, and a bag bottom located at the bottom of the sub-bag body. The sub-bag head includes a second bag head piece and a second positioning rope loop wrapped inside the second bag head piece.

[0009] When the sub-bag is assembled with the mother bag, the bottom of the mother bag body wraps around the outside of the sub-bag head and the first positioning rope loop is engaged with the bottom of the second positioning rope loop.

[0010] Furthermore, the head of the mother bag includes a first head piece fixed to the outer side of the upper end of the mother bag body, and a grooved pad and a first elastic steel ring wrapped inside the first head piece.

[0011] Furthermore, the first bag head piece is folded down to form a first assembly cavity, and the grooved pad and the first elastic steel ring are disposed in the first assembly cavity;

[0012] The lower end of the first bag head piece is sewn and fixed to the inner mother bag body by at least two sets of first sutures.

[0013] Furthermore, the lower end of the mother bag body is folded inward to form a second assembly cavity, and the first positioning rope loop is disposed in the second assembly cavity;

[0014] The bottom edge of the mother bag is fixed by at least one set of second sutures.

[0015] Furthermore, the second bag head piece is folded down in the direction of opening to form a third assembly cavity, and the second positioning rope loop is disposed in the third assembly cavity;

[0016] The lower end of the second bag head piece is sewn and fixed to the upper outer side of the sub-bag body by at least two sets of third sutures.

[0017] Furthermore, the sub-bag head also includes a second elastic steel ring disposed within the third assembly cavity and located inside the second positioning rope loop.

[0018] Furthermore, a partition is provided between the second positioning rope loop and the second elastic steel ring, and the upper and lower ends of the partition are respectively sewn and fixed to the second bag head piece on the side where the second positioning rope loop is located by a fourth stitch.

[0019] Furthermore, the outer edge of the bag bottom is folded downwards and fixed to the inner side of the lower end of the sub-bag body.

[0020] Furthermore, the connection between the bottom of the bag and the body of the sub-bag is wrapped with an outer layer. One end of the outer layer is located on the outside of the body of the sub-bag and is sewn and fixed to the body of the sub-bag by the fifth suture line. The other end extends downward from below the connection between the body of the sub-bag and the bag body and goes around and fits to the inside of the bottom of the bag. The two outer layers and the body of the sub-bag and the bottom of the bag located between the two layers are sewn and fixed by the sixth suture line.

[0021] Furthermore, the diameters of the first and second positioning rope loops are 6mm.

[0022] After adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0023] This invention designs the filter bag as a structure consisting of a mother bag and a daughter bag. When the daughter bag, which is prone to damage, is damaged, only the daughter bag needs to be replaced, while the mother bag can be reused. This effectively reduces the cost of using the filter bag. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is an axial cross-sectional view of the spliced ​​mother-daughter filter bag (assembled on a tube sheet) according to a preferred embodiment of the present invention;

[0026] Figure 2 yes Figure 1 Enlarged view of section A;

[0027] Figure 3 yes Figure 1 Enlarged view of section B;

[0028] Figure 4 yes Figure 1 Enlarged view of section C;

[0029] In the diagram: Mother bag 1, Mother bag body 1-1, Mother bag head 1-2, First bag head piece 1-21, Groove pad 1-22, First elastic steel ring 1-23, First assembly cavity 1-24, First positioning rope ring 1-3, First stitch 1-4, Second assembly cavity 1-5, Second stitch 1-6, Daughter bag 2, Daughter bag body 2-1, Daughter bag head 2-2, Second bag head piece 2-21, Second positioning rope ring 2-22, Third assembly cavity 2-23, Second elastic steel ring 2-24, Divider 2-25, Fourth stitch 2-26, Bag bottom 2-3, Third stitch 2-4, Outer layer 2-5, Fifth stitch 2-6, Pattern plate 3. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] like Figure 1-4As shown, a spliced ​​mother-daughter filter bag includes a mother bag 1 and a daughter bag 2. The mother bag 1 is a cylindrical structure with open ends. The mother bag 1 includes a mother bag body 1-1 and a mother bag head 1-2 located at the upper end of the mother bag body 1-1. A first positioning rope loop 1-3 is provided at the bottom of the mother bag body 1-1. The daughter bag 2 is a cylindrical structure with an open top and a closed bottom. The open end of the daughter bag 2 is installed at the bottom of the mother bag 1. The daughter bag 2 includes a daughter bag body 2-1 and a first positioning rope loop 1-3 located at the bottom of the mother bag 1. The sub-bag head 2-2 is located at the upper end of the sub-bag body 2-1, and the bag bottom 2-3 is located at the bottom of the sub-bag body 2-1. The sub-bag head 2-2 includes a second bag head piece 2-21 and a second positioning rope loop 2-22 wrapped inside the second bag head piece 2-21. When the sub-bag 2 is assembled with the mother bag 1, the bottom of the mother bag body 1-1 is wrapped around the outside of the sub-bag head 2-2, and the first positioning rope loop 1-3 is stuck at the bottom of the second positioning rope loop 2-22.

[0033] The mother bag head 1-2 of the mother bag 1 is used to assemble the entire filter bag into the mounting hole of the tube sheet 3. The mother bag head 1-2 includes a first bag head piece 1-21 fixed to the outer side of the upper end of the mother bag body 1-1, and a grooved pad 1-22 and a first elastic steel ring 1-23 wrapped in the first bag head piece 1-21.

[0034] The grooved pad 1-22 is located outside the first elastic steel ring 1-23, and the groove of the grooved pad 1-22 faces outward. When the filter bag is assembled onto the tube sheet 3, the inner edge of the mounting hole on the tube sheet 3 is engaged in the groove of the grooved pad 1-22 to fix the filter bag on the tube sheet 3 and prevent it from falling off.

[0035] The first elastic steel ring 1-23 not only keeps the upper end of the mother bag 1 open, ensuring that air can smoothly enter the mother bag 1, but also positions the grooved pad 1-22 to prevent it from moving inward, ensuring the stability and firmness of the connection between the mother bag 1 and the tube sheet 3.

[0036] In order to fix the grooved pad 1-22 and the first elastic steel ring 1-23 inside the first bag head piece 1-21, the first bag head piece 1-21 is folded down to form a first assembly cavity 1-24, and the grooved pad 1-22 and the first elastic steel ring 1-23 are arranged inside the first assembly cavity 1-24; the lower end of the first bag head piece 1-21 is sewn and fixed to the inner mother bag body 1-1 by at least two sets of first stitching lines 1-4.

[0037] Specifically, the first bag head piece 1-21 is folded over to form a double-layer structure with the opening facing downwards. The grooved pad 1-22 and the first elastic steel ring 1-23 are located within the double-layer structure, i.e., the first assembly cavity 1-24. The lower end of the first bag head piece 1-21 (i.e., the open end of the double-layer structure) is sewn and fixed to the inner mother bag body 1-1 by two sets of first stitches 1-4, each set including at least two first stitches 1-4. The upper set of first stitches 1-4 can fix the upper end of the mother bag body 1-1, and the lower set of first stitches 1-4 can fix the lower end of the first bag head piece 1-21, thereby ensuring the firmness of the connection between the mother bag head 1-2 and the mother bag body 1-1.

[0038] In order to fix the first positioning rope loop 1-3 so as to connect and cooperate with the daughter bag 2, the lower end of the mother bag body 1-1 is folded inward to form a second assembly cavity 1-5, and the first positioning rope loop 1-3 is set in the second assembly cavity 1-5; the bottom edge of the mother bag body 1-1 is sewn and fixed by at least one set of second stitches 1-6.

[0039] Each group includes at least two second stitching lines 1-6. The bottom edge of the mother bag body 1-1 is folded inside the mother bag body 1-1, and the two are sewn together by the two second stitching lines 1-6. A first assembly cavity 1-24 is formed inside the fold, and a first positioning rope loop 1-3 can be set in the second assembly cavity 1-5.

[0040] In order to form the bag head 2-2 of the sub-bag so as to connect with the bottom of the mother bag 1, the second bag head piece 2-21 is folded down to form the third assembly cavity 2-23, and the second positioning rope loop 2-22 is set in the third assembly cavity 2-23; the lower end of the second bag head piece 2-21 is sewn and fixed to the upper outer side of the sub-bag body 2-1 by at least two sets of third stitches 2-4.

[0041] Specifically, the second bag head piece 2-21 is folded over to form a double-layer structure with the opening facing downwards. The second positioning loop 2-22 is located within the double-layer structure, i.e., the third assembly cavity 2-23. The lower end of the second bag head piece 2-21 (i.e., the open end of the double-layer structure) is sewn and fixed to the inner sub-bag body 2-1 by two sets of third sutures 2-4, each set including at least two third sutures 2-4. The upper set of third sutures 2-4 can fix the upper end of the sub-bag body 2-1, and the lower set of third sutures 2-4 can fix the lower end of the second bag head piece 2-21, thereby ensuring the firmness of the connection between the sub-bag head 2-2 and the sub-bag body 2-1.

[0042] In order to position the second positioning rope loop 2-22 and the upper open end of the sub-bag 2, the sub-bag head 2-2 also includes a second elastic steel ring 2-24 disposed in the third assembly cavity 2-23 and located inside the second positioning rope loop 2-22.

[0043] The second elastic steel ring 2-24 not only keeps the opening of the sub-bag 2 open, ensuring that air can smoothly enter the sub-bag 2, but also positions the second positioning rope ring 2-22 to prevent it from moving inward, ensuring the stability and firmness of the connection between the sub-bag 2 and the mother bag 1.

[0044] In order to fix the position of the second positioning rope loop 2-22 and prevent it from moving freely in the third assembly cavity 2-23, a partition 2-25 is provided between the second positioning rope loop 2-22 and the second elastic steel ring 2-24. The upper and lower ends of the partition 2-25 are respectively sewn and fixed to the second bag head piece 2-21 on the side where the second positioning rope loop 2-22 is located by the fourth sewing line 2-26.

[0045] When making the bag head 2-2 of the sub-bag, first position the second positioning rope loop 2-22 using the partition 2-25 that is sewn and fixed to the second bag head piece 2-21 at both ends. Then place the second elastic steel ring 2-24 inside the partition 2-25 and fold the second bag head piece 2-21. Finally, sew and fix the lower end of the second bag head piece 2-21 to the sub-bag body 2-1.

[0046] In this embodiment, the upper and lower ends of the partition 2-25 are respectively sewn and fixed to the second bag head piece 2-21 on the corresponding side by a fourth suture 2-26.

[0047] In order to connect and fix the sub-bag body 2-1 to the bag bottom 2-3, the outer edge of the bag bottom 2-3 is folded down and fixed to the lower inner side of the sub-bag body 2-1.

[0048] To ensure the airtightness of the connection between the sub-bag body 2-1 and the bag bottom 2-3 and to prevent dust leakage, an outer layer 2-5 is wrapped around the connection between the bag bottom 2-3 and the sub-bag body 2-1. One end of the outer layer 2-5 is located on the outside of the sub-bag body 2-1 and is sewn and fixed to the sub-bag body 2-1 by the fifth seam 2-6. The other end extends downward from below the connection between the sub-bag body 2-1 and the bag body and goes around and fits against the inside of the bag bottom 2-3. The two outer layers 2-5 and the sub-bag body 2-1 and the bag bottom 2-3 located between the two layers are sewn and fixed by the sixth seam.

[0049] One end of the outer layer 2-5 is sewn and fixed to the sub-bag body 2-1 by two fifth sutures 2-6, and the other end is sewn and fixed to the two outer layers 2-5, the sub-bag body 2-1 located between the two outer layers 2-5, and the bag bottom 2-3 by two sutures.

[0050] To ensure the stability of the connection between the bottom of the mother bag 1 and the top of the daughter bag 2, the diameter of the first positioning rope loop 1-3 and the second positioning rope loop 2-22 is 6mm.

[0051] This utility model designs the filter bag with a spliced ​​structure, that is, a sub-bag 2 with an open top and closed bottom is spliced ​​to the bottom of a mother bag 1 with open ends. The easily damaged part is designed as a separate sub-bag 2. When the sub-bag 2 is damaged, the sub-bag 2 can be replaced separately, and the mother bag 1 does not need to be replaced and can be reused. This solves the problem of high usage cost caused by the need to replace the entire filter bag when it is damaged. It is not only convenient to disassemble and replace, but also effectively reduces the usage cost of the filter bag.

[0052] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A spliced ​​mother-daughter filter bag, characterized in that, include The mother bag (1) is a cylindrical structure with openings at both ends. The mother bag (1) includes a mother bag body (1-1) and a mother bag head (1-2) located at the upper end of the mother bag body (1-1). A first positioning rope loop (1-3) is provided at the bottom of the mother bag body (1-1). The sub-bag (2) is a cylindrical structure with an open top and a closed bottom. The open end of the sub-bag (2) is installed at the bottom of the mother bag (1). The sub-bag (2) includes a sub-bag body (2-1), a sub-bag head (2-2) set at the upper end of the sub-bag body (2-1), and a bag bottom (2-3) set at the bottom of the sub-bag body (2-1). The sub-bag head (2-2) includes a second bag head piece (2-21) and a second positioning rope loop (2-22) wrapped inside the second bag head piece (2-21). When the sub-bag (2) is assembled with the mother bag (1), the bottom of the mother bag body (1-1) is wrapped around the outside of the sub-bag head (2-2) and the first positioning rope loop (1-3) is locked at the bottom of the second positioning rope loop (2-22).

2. The spliced ​​mother-daughter filter bag according to claim 1, characterized in that, The mother bag head (1-2) includes a first bag head piece (1-21) fixed to the outer side of the upper end of the mother bag body (1-1), and a grooved pad (1-22) and a first elastic steel ring (1-23) wrapped in the first bag head piece (1-21).

3. The spliced ​​mother-daughter filter bag according to claim 2, characterized in that, The first bag head piece (1-21) is folded down to form a first assembly cavity (1-24), and the grooved pad (1-22) and the first elastic steel ring (1-23) are disposed in the first assembly cavity (1-24); The lower end of the first bag head piece (1-21) is sewn and fixed to the inner mother bag body (1-1) by at least two sets of first sutures (1-4).

4. The spliced ​​mother-daughter filter bag according to claim 1, characterized in that, The lower end of the mother bag body (1-1) is folded inward to form a second assembly cavity (1-5), and the first positioning rope loop (1-3) is disposed in the second assembly cavity (1-5); The bottom edge of the mother bag body (1-1) is fixed by at least one set of second sutures (1-6).

5. The spliced ​​mother-daughter filter bag according to claim 1, characterized in that, The second bag head piece (2-21) is folded down to form a third assembly cavity (2-23), and the second positioning rope loop (2-22) is disposed in the third assembly cavity (2-23); The lower end of the second bag head piece (2-21) is sewn and fixed to the upper outer side of the sub-bag body (2-1) by at least two sets of third sutures (2-4).

6. The spliced ​​mother-daughter filter bag according to claim 5, characterized in that, The sub-bag head (2-2) also includes a second elastic steel ring (2-24) disposed in the third assembly cavity (2-23) and located inside the second positioning rope ring (2-22).

7. The spliced ​​mother-daughter filter bag according to claim 6, characterized in that, A partition (2-25) is provided between the second positioning rope loop (2-22) and the second elastic steel ring (2-24). The upper and lower ends of the partition (2-25) are respectively sewn and fixed to the second bag head piece (2-21) on the side where the second positioning rope loop (2-22) is located by the fourth sewing line (2-26).

8. The spliced ​​mother-daughter filter bag according to claim 1, characterized in that, The bottom edge of the bag (2-3) is folded downwards and fixed to the lower inner side of the sub-bag body (2-1).

9. The spliced ​​mother-daughter filter bag according to claim 8, characterized in that, The connection between the bottom of the bag (2-3) and the body of the sub-bag (2-1) is wrapped with an outer layer (2-5). One end of the outer layer (2-5) is located outside the body of the sub-bag (2-1) and is sewn and fixed to the body of the sub-bag (2-1) by the fifth suture (2-6). The other end extends downward from below the connection between the body of the sub-bag (2-1) and the bag body and fits against the inside of the bottom of the bag (2-3). The two outer layers (2-5) and the body of the sub-bag (2-1) and the bottom of the bag (2-3) located between the two layers are sewn and fixed by the sixth suture.

10. The spliced ​​mother-daughter filter bag according to claim 1, characterized in that, The diameter of the first positioning rope loop (1-3) and the second positioning rope loop (2-22) is 6mm.

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