Flat filter element and filter cartridge type dust collector

Abstract

The utility model discloses a flat filter element which comprises a framework, an upper end cover, a lower end cover, a filter material and a protective plate, the filter material is laid on the front surface and the rear surface of the framework; l-shaped bending pieces connected with the filter material are arranged on the two sides of the framework; the protective plates are arranged at the upper end and the lower end of the filter material; the upper end cover is arranged at the upper end of the filter material and is positioned on the outer side of the protective plate; and the lower end cover is arranged at the lower end of the filter material and is positioned on the outer side of the protective plate. The utility model also discloses a cartridge filter. Under the condition that the number of the flat filter elements is not increased, the ultra-low emission requirement can be met with the same air volume.

Description

Technical Field

[0001] The utility model relates to a filter element technology in a filter cartridge type dust collector, and more specifically, to a flat filter element and a filter cartridge type dust collector. Background Art

[0002] A cartridge dust collector is a dry dust filtration device. It is suitable for capturing fine, dry, non-fibrous dust. It is equipped with multiple filter bags inside. The filter bags are shaped like flat filters (trapezoidal and flat) and round filters (cylindrical). They are made of textile filter cloth or non-woven felt. They use the filtering effect of the fiber fabric to filter the dust-laden gas. When the dust-laden gas enters the cartridge dust collector, the large particles with high specific gravity settle due to gravity and fall into the ash hopper. The gas containing finer dust is retained when passing through the filter material, thus purifying the gas.

[0003] like Figure 1 As shown in the figure, due to the overall shape of the current flat filter bag, its filtration area is insufficient. In order to meet the ultra-low emission requirements under the same air volume, the only way to solve this problem is to increase the number of flat bags. For example, the filtration area of a 2.2-meter-long flat filter bag is 1.5 square meters. In a module with 140 flat filter bags, only 210 square meters of filtration area can be achieved. At an air volume of 20,000m 3 / h, if you want to achieve ultra-low emissions of 0.7-0.8m / min, you have to add a 140 flat filter bag module. This not only increases the floor space but also increases the cost. Utility Model Content

[0004] In view of the defects existing in the prior art, the purpose of the present invention is to provide a flat filter element and a cartridge dust collector, which can achieve the same air volume and meet the ultra-low emission requirements without increasing the number of flat filter elements.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The first aspect of the present invention provides a flat filter element, comprising a frame, an upper end cover, a lower end cover, a filter material and a guard plate;

[0007] The filter material is laid on the front surface and the rear surface of the skeleton;

[0008] Both sides of the frame are provided with L-shaped bending parts connected to the filter material;

[0009] The guard plates are arranged at the upper and lower ends of the filter material;

[0010] The upper end cover is arranged at the upper end of the filter material and is located outside the guard plate;

[0011] The lower end cover is arranged at the lower end of the filter material and is located outside the guard plate.

[0012] Preferably, the frame comprises two support bars arranged in parallel;

[0013] A plurality of ribs are welded between the two support bars.

[0014] Preferably, the L-shaped bending part is arranged on the rib near the middle position.

[0015] Preferably, the cross section of the guard plate is configured as a triangular structure with an opening at the bottom, and the top angle thereof is 143°±1°.

[0016] Preferably, a plurality of lining molds are provided inside the filter material.

[0017] Preferably, the cross section of the lining mold is arranged to be a diamond structure, and the four sides thereof are provided with sharp corners protruding outwards.

[0018] Preferably, the angle of the sharp corner is 75°±1°.

[0019] Preferably, the lining mold is further provided with a draft hole.

[0020] Preferably, a sealing strip is further provided on the outer side surface of the upper end cover.

[0021] The second aspect of the present invention provides a cartridge dust collector, comprising one or more flat filter elements provided in the first aspect of the present invention.

[0022] The flat filter element and filter cartridge dust collector provided by this utility model are also applicable to various industries, such as steel, casting, tobacco, glass, woodworking, chemical industry, food, medicine, mining, building materials, etc., to replace the existing flat filter bags. The filtration area of a 2.2-meter-long flat filter element is 3.63 square meters. The filtration area of the flat filter element of this utility model is 2.42 times that of the existing flat filter bag. 3 Under the condition of 1 / h, the total filtration area of 140 flat filter elements of the present invention is 508.2 square meters, which can meet the requirements of ultra-low emissions, significantly reduce costs, and reduce floor space. It can be seen that the use of the flat filter element of the present invention can meet the requirements of ultra-low emissions, reduce cost increases, and extend the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of an existing flat filter bag;

[0024] Figure 2 This is a schematic diagram of the structure of the flat filter element of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the skeleton of the flat filter element of the utility model;

[0026] Figure 4 This is a schematic diagram of the connection between the skeleton and the filter material in the flat filter element of the utility model;

[0027] Figure 5 yes Figure 4 Schematic diagram of the protective plate installed at the end of the middle filter material;

[0028] Figure 6 This is a schematic diagram of the inner lining mold in the flat filter element of the utility model, (a) is the main view, and (b) is the side view;

[0029] Figure 7 This is a schematic diagram of the use state of the lining mold in the flat filter element of the utility model;

[0030] Figure 8 It is a structural schematic diagram of the utility model filter cartridge type dust collector. DETAILED DESCRIPTION

[0031] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0032] Combine Figures 2 to 5 As shown, the present invention provides a flat filter element, which includes a frame 1, an upper end cover 2, a lower end cover 3, a filter material 4 and a protective plate 5.

[0033] The filter material 4 is installed on the front and rear surfaces of the skeleton 1, and L-shaped bending parts 6 are welded on both sides of the skeleton 1. The L-shaped bending parts 6 play a reinforcing role, making it easy for the ribs 12 on the skeleton 1 to dock with the filter material 4, so that the filter materials 4 on both sides can fully contact with the glue during docking to ensure their firmness, and at the same time will not be blown apart during the spraying process of the filter element 4.

[0034] The edge materials 41 at both ends of the filter material 4 located on both sides of the frame 1 are spliced at the upper end and the lower end of the frame 1 by glue.

[0035] The frame 1 includes two parallel supporting bars 11 , with a plurality of ribs 12 welded between the two supporting bars 11 .

[0036] The L-shaped bending part 6 is welded to the rib 12 near the middle position.

[0037] The protective plates 5 are installed at the upper and lower ends of the filter material 4 (ie, at the joints of the edge materials 41 ).

[0038] The cross section of the guard plate 5 is configured as a triangular structure with an opening at the bottom, and the top angle α thereof is 143°±1°.

[0039] The guard plate 5 forms a triangular stable structure through the bending angle of the top, which ensures that the flat filter element of the utility model will not be deformed as a whole during transportation, installation and spraying.

[0040] The upper end cover 2 is installed at the upper end of the filter material 4 and is located outside the guard plate 5 . A sealing strip 7 is also provided on the outer surface of the upper end cover 2 .

[0041] The lower end cover 3 is installed at the lower end of the filter material 4 and is located outside the guard plate 5 .

[0042] Combine Figure 6 and Figure 7 As shown, a plurality of lining molds 8 are provided inside the filter material 4 .

[0043] The cross section of the lining mold 8 is set to a diamond structure, and the four sides thereof are all provided with outwardly protruding sharp corners 81, and the angle of the sharp corners 81 is 75°±1°.

[0044] The lining mold 8 is also provided with a draft hole 82 .

[0045] The lining mold 8 is set to a diamond structure to facilitate the shaping of the filter material 4. The angle of the four sharp corners 81 protruding outward is 75°, which is used to support the filter material 4 to facilitate glue injection so that the filter material 4 and the glue are in full contact. The demolding hole 82 is for the convenience of pulling out the lining mold 8 after the operation is completed.

[0046] Combine Figure 8 As shown, the present invention also provides a cartridge dust collector 100, including one or more flat filter elements 200 of the present invention, which can be applied to various industries, such as steel, casting, tobacco, glass, woodworking, chemical industry, food, medicine, mining, building materials, etc. After replacing the flat cloth bag with a flat filter element, the customer's ultra-low emission requirements can be met without increasing the floor space and reducing cost expenditure.

[0047] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A flat filter element, characterized by: Including frame, upper end cover, lower end cover, filter material and guard plate; The filter material is laid on the front surface and the rear surface of the skeleton; Both sides of the frame are provided with L-shaped bending parts connected to the filter material; The guard plates are arranged at the upper and lower ends of the filter material; The upper end cover is arranged at the upper end of the filter material and is located outside the guard plate; The lower end cover is arranged at the lower end of the filter material and is located outside the guard plate.

2. The flat filter element according to claim 1, characterized in that: The frame includes two support bars arranged in parallel; A plurality of ribs are welded between the two support bars.

3. The flat filter element according to claim 2, characterized in that: The L-shaped bending part is arranged on the rib near the middle position.

4. The flat filter element according to claim 1, characterized in that: The cross section of the guard plate is configured as a triangular structure with an opening at the bottom, and the top angle thereof is 143°±1°.

5. The flat filter element according to claim 1, characterized in that: A plurality of lining molds are arranged inside the filter material.

6. The flat filter element according to claim 5, characterized in that: The cross section of the lining mold is arranged to be a diamond structure, and the four sides thereof are all provided with sharp corners protruding outwards.

7. The flat filter element according to claim 6, characterized in that: The angle of the sharp corner is 75°±1°.

8. The flat filter element according to claim 6, characterized in that: The lining mold is also provided with a draft hole.

9. The flat filter element according to claim 1, characterized in that: A sealing strip is also provided on the outer side surface of the upper end cover.

10. A cartridge dust collector, characterized by: The invention comprises one or more flat filter elements according to any one of claims 1 to 9.

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