Flat bag filtering device with large filtering area and easy ash removal

Abstract

The utility model discloses a flat bag filter device with large filter area and easy ash removal, which comprises a flexible filter bag net rack (1) and a flat filter bag (2) which is sleeved on the flexible filter bag net rack (1) and is provided with an opening, the flexible filter bag net rack (1) comprises a flexible net body (5) and a strip-shaped outer frame (6), the flexible net body (5) consists of rhombic structures arranged in rows, and the strip-shaped outer frame (6) is provided with a strip-shaped outer frame (6). And the bag surface structure of the flat filter bag (2) is a zigzag structure matched with the structure of the flexible net body. The bag surface structure of the flat filter bag is a zigzag structure, the filter area is large, the filter efficiency is improved, and when the upper surface of the zigzag structure is covered by dust falling from top to bottom, the lower surface of the zigzag structure can filter continuously, so that the filter service time is prolonged, in addition, the air pressure of back flushing can be increased during back flushing, and the air pressure is reduced. And dust cleaning of the filter bag can be more thorough and efficient.

Description

Technical Field

[0001] The utility model belongs to the field of dust removal equipment, in particular to a flat bag filter device with large filtering area and easy dust cleaning. Background Art

[0002] In traditional dust removal and filtering devices, generally, dirty air enters from one side of the filter, and clean air passes through the other side of the filter, and thorough dust removal is achieved through multi-stage coordination. This dust removal method has low dust removal efficiency, small processing capacity, inconvenient filter cleaning, complex equipment, large floor space, and high power requirements. There are also filtering devices that use round long filter bags with openings on the top, but this type of filtering device still has the following disadvantages: 1. The volume of the round long filter bag is relatively large, which makes the dust collector itself larger and occupies a larger area; 2. The round long filter bag of the dust collector using the round long filter bag is top-inserted, and the round long filter bag is usually 5-10 meters long, heavy, and often replaced It needs to use a crane, which is very troublesome and costly. The long structure of the round strip filter bag also makes the filter bag have more joints, and there are wrinkles at the joints, which greatly reduces the filtration efficiency and makes the joints more easily damaged. 3. Because the round strip filter bag is a top-inserted type, the filter bag opening on the round strip filter bag is at the top, so the dust-containing gas flow in the dust collector needs to be a countercurrent design with bottom in and top out, which has secondary turbulence, affecting the formation of dust cakes and dust removal efficiency. 4. The round skeleton supporting the round strip filter bag is too long and is easy to break and damage during use. The grid-like skeleton structure with large spacing is not only troublesome to make, but also easy to have sharp points and wear the filter bag, resulting in a shorter service life of the filter bag. In order to improve the problem of the filtering device using the round strip filter bag with the top opening, there is also a filtering device using the flat filter bag with the side opening. The flat filter bag with the side opening has the characteristics of easy installation, easy cleaning, and not easy to damage. However, people still hope to improve it so that the filtering flat bag of the same size has better filtering effect and easier cleaning. Utility Model Content

[0003] The utility model aims to provide a flat bag filter device with large filtering area and easy dust cleaning.

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

[0005] Flat bag filter with large filter area and easy cleaning. The utility model comprises a flexible filter bag grid frame 1 and a flat filter bag 2 with an opening which is sleeved on the flexible filter bag grid frame 1. A flat bag opening pressing frame 3 is detachably provided on one end of the flexible filter bag grid frame 1 where the flat filter bag opening is located. The flexible filter bag grid frame 1 comprises a flexible mesh body 5 located in the middle and a strip outer frame 6 for supporting the flexible mesh body 5. Two long rods 7 of the strip outer frame 6 located at one end of the flat filter bag opening respectively extend outward for a section, and the extended section is inserted into a hole reserved on the flat bag opening pressing frame 3 to fix the strip outer frame 6 and the flat bag opening pressing frame 3 together; a through hole structure 4 is provided in the middle of the flat bag opening pressing frame 3, and dust-laden air enters the flat filter bag 2 from the outer surface of the flat filter bag 2, is filtered, and then is discharged from the flat filter bag 2 through the through hole structure 4; the flexible mesh body 5 is composed of rhombus structures arranged in rows, and the bag surface structure of the flat filter bag 2 is a zigzag structure adapted to the structure of the flexible mesh body.

[0006] The flat bag opening clamping frame 3 is provided with a raised oblong groove 8 on the inner side, and the through-hole structure 4 is connected with the oblong groove 8. The strip outer frame 6 and the flat bag opening clamping frame 3 are fixed together by inserting a section of two long rods 7 extending outward into the two ends of the oblong groove 8, and at the same time, the opening of the flat filter bag 2 is clamped by the edge of the oblong groove.

[0007] Preferably, a C-shaped smooth jacket 9 is sleeved on the two long rods 7 at the position where the flat filter bag 2 contacts the two long rods 7 of the strip outer frame 6 .

[0008] Preferably, the through-hole structure 4 disposed in the middle of the flat bag opening pressing frame 3 is a rhombus-shaped structure that can match the rhombus-shaped structure of the flexible mesh body 5 .

[0009] Preferably, the flat filter bag 2 is a cloth bag or a paper bag.

[0010] The beneficial effects of the utility model are:

[0011] The utility model discloses a flat bag filter device with large filtering area and easy dust cleaning, and has an ingenious structure. The bag surface structure of the flat filter bag is a serrated structure, which can greatly increase the filtering area of ​​the flat filter bag of the same size compared with the flat filter bag, thereby increasing the filtering efficiency, and when the upper side of the serrated shape is covered by dust falling from top to bottom, the lower side can continue to filter, thereby extending the filtering time. In addition, by making the bag surface structure of the flat filter bag a serrated structure, that is, a diamond structure arranged in rows inside, the ventilation cross-sectional area inside the filter bag can be made smaller than that of a flat surface, thereby increasing the backblowing wind pressure during backblowing, and the dust cleaning effect will be correspondingly enhanced, so that the filter bag cleaning can be more thorough and efficient, with strong practicality and worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments, wherein:

[0013] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 yes Figure 1 Schematic diagram of the disassembled structure;

[0016] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0017] Figure 5 yes Figure 1 A schematic cross-sectional structure diagram of a flat bag opening pressing frame along a longitudinal midline;

[0018] Figure 6 yes Figure 5 Schematic diagram of the structure cut in the EE direction;

[0019] Figure 7 yes Figure 6 Enlarged view of point C in the middle;

[0020] Figure 8 It is a schematic diagram of the structure of several flat bag filter devices of the utility model embodiments plugged into a cassette dry dust collector;

[0021] Fig. 9 It is a schematic diagram of the back-flushing device for back-flushing a flat bag filter device inserted into a cassette-type dry dust collector. DETAILED DESCRIPTION

[0022] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0023] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0024] like Figure 1-9As shown, a flat bag filter device with a large filtering area and easy to clean includes a flexible filter bag grid frame 1 and a flat filter bag 2 with an opening mounted on the flexible filter bag grid frame 1. A flat bag opening pressing frame 3 is detachably provided on one end of the flexible filter bag grid frame 1 where the flat filter bag opening is located. The flexible filter bag grid frame 1 includes a flexible mesh body 5 located in the middle and a strip outer frame 6 for supporting the flexible mesh body 5. Two long rods 7 of the strip outer frame 6 located at one end of the flat filter bag opening extend outwards respectively. The extended section is inserted into the hole reserved on the flat bag opening pressing frame 3 to fix the strip outer frame 6 and the flat bag opening pressing frame 3 together; a through-hole structure 4 is provided in the middle of the flat bag opening pressing frame 3, and the dust-laden air enters the flat filter bag 2 from the outer surface of the flat filter bag 2 and is filtered and then discharged from the flat filter bag 2 through the through-hole structure 4; the flexible mesh body 5 is composed of rhombus structures arranged in rows, and the bag surface structure of the flat filter bag 2 is a zigzag structure adapted to the structure of the flexible mesh body.

[0025] The flat bag opening clamping frame 3 is provided with a raised oblong groove 8 on the inner side, and the through-hole structure 4 is connected with the oblong groove 8. The strip outer frame 6 and the flat bag opening clamping frame 3 are fixed together by inserting a section of two long rods 7 extending outward into the two ends of the oblong groove 8, and at the same time, the opening of the flat filter bag 2 is clamped by the edge of the oblong groove.

[0026] At the position where the flat filter bag 2 contacts the two long rods 7 of the strip outer frame 6 , a C-shaped smooth jacket 9 is sleeved on the two long rods 7 .

[0027] The through-hole structure 4 arranged in the middle of the flat bag opening pressing frame 3 is a rhombus-shaped structure that can match the rhombus-shaped structure of the flexible mesh body 5 .

[0028] The flat filter bag 2 is a cloth bag or a paper bag.

[0029] The method of using the flat bag filter device is:

[0030] The flat bag filter device is used in a cassette dry dust collector and is used to be set on a filter box 10. The front end of the filter box 10 is separated from the outside by a porous plate. The flat bag filter device is inserted into the inner side of the filter box through the vertical bar-shaped jack on the porous plate. The flat bag opening clamping frame 3 is clamped on the vertical bar-shaped jack. The outside of the filter box is backblown through the backblowing device 20. Specifically, backblowing is performed from the through-hole structure 4 of the flat bag opening clamping frame 3 to the inside of the flat filter bag 2, so as to blow off the dust or dust blocks on the flat filter bag 2, so as to continue filtering and dust removal.

[0031] The utility model discloses a flat bag filter device with large filtering area and easy dust cleaning, and has an ingenious structure. The bag surface structure of the flat filter bag is a serrated structure, which can greatly increase the filtering area of ​​the flat filter bag of the same size compared with the flat filter bag, thereby increasing the filtering efficiency, and when the upper side of the serrated shape is covered by dust falling from top to bottom, the lower side can continue to filter, thereby extending the filtering time. In addition, by making the bag surface structure of the flat filter bag a serrated structure, that is, a diamond structure arranged in rows inside, the ventilation cross-sectional area inside the filter bag can be made smaller than that of a flat surface, thereby increasing the backblowing wind pressure during backblowing, and the dust cleaning effect will be correspondingly enhanced, so that the filter bag cleaning can be more thorough and efficient, with strong practicality and worthy of promotion.

[0032] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A flat bag filter device with a large filtering area and easy dust cleaning, comprising a flexible filter bag frame (1) and a flat filter bag (2) with an opening mounted on the flexible filter bag frame (1), wherein a flat bag opening pressing frame (3) is detachably provided on one end of the flexible filter bag frame (1) where the flat filter bag opening is located, and characterized in that: The flexible filter bag mesh frame (1) comprises a flexible mesh body (5) located in the middle and a strip outer frame (6) for supporting the flexible mesh body (5); two long rods (7) located at one end of the flat filter bag opening of the strip outer frame (6) respectively extend outward for a section, and the extended section is inserted into a hole reserved on the flat bag opening pressing frame (3) to fix the strip outer frame (6) and the flat bag opening pressing frame (3) together; a through hole structure (4) is provided in the middle of the flat bag opening pressing frame (3); dust-laden air enters the flat filter bag (2) from the outer surface of the flat filter bag (2), is filtered, and then is discharged from the flat filter bag (2) through the through hole structure (4); the flexible mesh body (5) is composed of rhombus structures arranged in rows, and the bag surface structure of the flat filter bag (2) is a zigzag structure adapted to the structure of the flexible mesh body.

2. The flat bag filter device with large filtering area and easy cleaning according to claim 1 is characterized in that: The flat bag opening clamping frame (3) is provided with a protruding oblong groove (8) on the inner side, the through-hole structure (4) is connected with the oblong groove (8), and the strip outer frame (6) and the flat bag opening clamping frame (3) are fixed together by inserting a section of two long rods (7) extending outwards into the two ends of the oblong groove (8), and at the same time, the opening of the flat filter bag (2) is clamped by the edge of the oblong groove.

3. The flat bag filter device with large filtering area and easy cleaning according to claim 1 is characterized in that: At the position where the flat filter bag (2) contacts the two long rods (7) of the strip-shaped outer frame (6), a C-shaped smooth jacket (9) is sleeved on the two long rods (7).

4. The flat bag filter device with large filtering area and easy cleaning according to claim 1 is characterized in that: The through-hole structure (4) arranged in the middle of the flat bag opening pressing frame (3) is a rhombus-shaped structure that can match the rhombus-shaped structure of the flexible mesh body (5).

5. The flat bag filter device with large filtering area and easy cleaning according to claim 1 is characterized in that: The flat filter bag (2) is a cloth bag or a paper bag.

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