Multi-stage bag type filtration system

Abstract

The utility model relates to the technical field of waste gas filtering, in particular to a multi-stage bag type filtering system which comprises a main body, a filtering assembly is mounted in the main body and comprises a first mounting plate, the upper surface of the first mounting plate is fixedly connected with a second mounting plate, and the upper end of the second mounting plate is fixedly connected with a third mounting plate. A fixing frame is arranged on the surface of the third mounting plate, a filter bag is fixedly connected to the inner surface of the fixing frame, a first bolt is fixedly connected to the surface of the second mounting plate, a first pressing block is movably connected to the outer surface of the first bolt, a first nut is in threaded connection to the outer surface of the first bolt, and a second bolt is fixedly connected to the surface of the third mounting plate; the outer surface of the second bolt is movably connected with a second pressing block, and the outer surface of the second bolt is in threaded connection with a second nut. According to the utility model, waste gas can be filtered in a grading manner, the filtering frequency of the waste gas is increased, the filtering precision is improved, and the bag type filtering system is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas filtering, in particular to a multi-stage bag filtering system. Background Art

[0002] Bag filter is a multi-purpose filtering equipment with novel structure, small size, simple and flexible operation, energy saving, high efficiency, closed operation and strong applicability. Bag filter has many advantages such as reasonable structure, good sealing, strong flow performance and simple operation, especially the filter bag has a small chance of side leakage and can accurately guarantee the filtering accuracy.

[0003] In the current existing technology, since the bag filter system usually adopts single-stage filtration when working, the filtration accuracy of single-stage filtration is low, and the number of times the exhaust gas is filtered is small, the quality of the exhaust gas after filtration cannot be significantly improved. At the same time, single-stage filtration is prone to quickly accumulate a large amount of impurities, resulting in the need to frequently replace the filter bag, which is not convenient for the use of the bag filter system. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a multi-stage bag filter system.

[0005] In order to achieve the above-mentioned objectives, the utility model adopts the following technical scheme: a multi-stage bag filter system, including a main body, a filter assembly is installed inside the main body, the filter assembly includes a first mounting plate, the lower surface of the first mounting plate is fixedly connected to the inner bottom surface of the main body, the upper surface of the first mounting plate is fixedly connected to the second mounting plate, the upper end of the second mounting plate is fixedly connected to the third mounting plate, the two ends of the third mounting plate are respectively fixedly connected to the inner surfaces of both sides of the main body, the surface of the third mounting plate is provided with a fixing frame, the inner surface of the fixing frame is fixedly connected to the filter bag, the surface of the second mounting plate is fixedly connected to the first bolt, the outer surface of the first bolt is movably connected to the first pressure block, the outer surface of the first bolt is threadedly connected to the first nut, the surface of the third mounting plate is fixedly connected to the second bolt, the outer surface of the second bolt is movably connected to the second pressure block, and the outer surface of the second bolt is threadedly connected to the second nut.

[0006] As a further description of the above technical solution:

[0007] The filter assembly is divided into three layers, and the three layers of filter assembly are arranged at equal distances.

[0008] As a further description of the above technical solution:

[0009] The filter bags are divided into three levels, which are F-level filter bags, F-level filter bags and F-level filter bags.

[0010] As a further description of the above technical solution:

[0011] A patch plate is fixedly connected to the front of the main body, and a differential pressure gauge is fixedly connected to the surface of the patch plate. The number of the differential pressure gauges is multiple.

[0012] As a further description of the above technical solution:

[0013] An inlet and an outlet are provided on the front of the main body. There are multiple inlets and outlets, all of which are located below the differential pressure meter. Inspection doors are provided inside the inlets and outlets.

[0014] As a further description of the above technical solution:

[0015] The left side of the main body is fixedly connected with an air inlet, and the right side of the main body is fixedly connected with an air outlet.

[0016] The utility model has the following beneficial effects:

[0017] Compared with the prior art, the multi-stage bag filter system, through the filter assembly, places a plurality of filter bags connected to the fixed frame in sequence according to the filter level, the filter bags close to the air inlet are F5-level filter bags, and the filter bags far from the air inlet are F9-level filter bags. After the placement is completed, the first pressing block and the second pressing block are respectively placed on the first bolt and the second bolt and the positions are adjusted, and then the first nut and the second nut are rotated to fix the first pressing block and the second pressing block, thereby restricting and fixing the fixed frame, that is, fixing the filter bag. Compared with the prior art, since the bag filter system is working, Single-stage filtration is usually adopted, but the filtration accuracy of single-stage filtration is low, and the number of times the exhaust gas is filtered is small, so that the quality of the exhaust gas after filtering is not significantly improved. At the same time, single-stage filtration is prone to quickly accumulate a large amount of impurities, resulting in the need to frequently replace filter bags, which is not convenient for the use of bag filtration systems. This multi-stage bag filtration system can perform graded filtration on the exhaust gas, increase the number of times the exhaust gas is filtered, and improve the filtration accuracy, so that the quality of the exhaust gas after filtering is significantly improved. At the same time, the number of filter bags is increased, and frequent replacement of filter bags is avoided, which is convenient for the use of bag filtration systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a multi-stage bag filter system proposed by the utility model from a first perspective;

[0019] Figure 2 A second perspective overall structural diagram of a multi-stage bag filter system proposed by the utility model;

[0020] Figure 3 A longitudinal half-section schematic diagram of a multi-stage bag filter system proposed by the utility model;

[0021] Figure 4 A transverse half-section schematic diagram of a multi-stage bag filter system proposed by the utility model;

[0022] Figure 5 A multi-stage bag filter system proposed by the utility model Figure 4 A magnified view of the structure at center;

[0023] Figure 6 A multi-stage bag filter system proposed by the utility model Figure 4 A magnified view of the structure at B in the middle;

[0024] Figure 7 A multi-stage bag filter system proposed by the utility model Figure 4 A magnified view of the structure at C in the middle;

[0025] Figure 8 A multi-stage bag filter system proposed by the utility model Figure 4 Enlarged view of the structure at point D in the middle.

[0026] Legend:

[0027] 1. Main body; 2. Filter assembly; 201. First mounting plate; 202. Second mounting plate; 203. Third mounting plate; 204. Fixing frame; 205. Filter bag; 206. First bolt; 207. First pressure block; 208. First nut; 209. Second bolt; 210. Second pressure block; 211. Second nut; 3. Filling plate; 4. Differential pressure gauge; 5. Inlet and outlet; 6. Inspection door; 7. Air inlet; 8. Air outlet. DETAILED DESCRIPTION

[0028] Reference Figure 1-8, a multi-stage bag filter system provided by the utility model: includes a main body 1, a filter component 2 is installed inside the main body 1. The filter component 2 includes a first mounting plate 201. The cross-section of the first mounting plate 201 is L-shaped, forming a block in the vertical direction to facilitate the restriction and fixation of the fixing frame 204. The lower surface of the first mounting plate 201 is fixedly connected to the inner bottom surface of the main body 1. The upper surface of the first mounting plate 201 is fixedly connected to a second mounting plate 202. The upper end of the second mounting plate 202 is fixedly connected to a third mounting plate 203. The two ends of the third mounting plate 203 are respectively fixedly connected to the inner surfaces on both sides of the main body 1. The cross-section of the third mounting plate 203 is U-shaped, and it cooperates with the first mounting plate 201 and the second mounting plate 202 to restrict and fix the fixing frame 204. A fixing frame 204 is arranged on the surface of the third mounting plate 203. The fixing frame 204 is square. A filter bag 205 is fixedly connected to the inner surface of the fixing frame 204. A first bolt 206 is fixedly connected to the surface of the second mounting plate 202. A first pressing block 207 is movably connected to the outer surface of the first bolt 206. The first pressing block 207 is U-shaped, facilitating fixing the fixing frame 204 with different thicknesses. A first nut 208 is threadedly connected to the outer surface of the first bolt 206. A second bolt 209 is fixedly connected to the surface of the third mounting plate 203. A second pressing block 210 is movably connected to the outer surface of the second bolt 209. The second pressing block 210 is U-shaped, and it cooperates with the first pressing block 207 to restrict and fix the fixing frame 204. A second nut 211 is threadedly connected to the outer surface of the second bolt 209. The filter component 2 is divided into three layers, and the three layers of filter components 2 are arranged at equal intervals. Inside each layer of the filter component 2, the number of the first mounting plate 201 and the third mounting plate 203 is two, the number of the second mounting plate 202, the first bolt 206, the first pressing block 207 and the first nut 208 is nine, the number of the second bolt 209, the second pressing block 210 and the second nut 211 is eight, and the number of the fixing frame 204 and the filter bag 205 is twelve. The filter bag 205 is divided into three grades, and the three-grade filter bag 205 is respectively an F5-grade filter bag, an F7-grade filter bag and an F9-grade filter bag. The leftmost one is the F5-grade filter bag, and the rightmost one is the F9-grade filter bag. The multiple filter bags 205 connected to the fixing frame 204 are placed in sequence according to the filtration grade. The F5-grade filter bag is close to the air inlet 7, and the F9-grade filter bag is far from the air inlet 7. After the placement is completed, the first pressing block 207 and the second pressing block 210 are respectively placed on the first bolt 206 and the second bolt 209 and adjusted in position, and then the first nut 208 and the second nut 211 are rotated to fix the first pressing block 207 and the second pressing block 210, thereby restricting and fixing the fixing frame 204, that is, fixing the filter bag 205.

[0029] A patch plate 3 is fixedly connected to the front of the main body 1, and a differential pressure gauge 4 is fixedly connected to the surface of the patch plate 3. There are multiple differential pressure gauges 4, and the model of the differential pressure gauge 4 is D2000-1.5KPa. The detection end of the differential pressure gauge 4 passes through the patch plate 3 and the main body 1 and extends to the inside of the main body 1. The multiple differential pressure gauges 4 are respectively located on the left side of the three-layer filter assembly 2. The differential pressure gauge 4 detects the pressure difference before and after filtration. When the pressure difference reaches a certain value, it indicates that the filter assembly 2 of this layer is seriously clogged and the filter bag 205 needs to be cleaned or replaced.

[0030] An inlet and outlet 5 is provided on the front of the main body 1. There are multiple inlet and outlet 5, all of which are located below the differential pressure meter 4. An inspection door 6 is provided inside the inlet and outlet 5, which can be opened through the inspection door 6, so that the staff can enter the main body 1 to inspect or replace the filter bag 205.

[0031] An air inlet 7 is fixedly connected to the left side of the main body 1 , through which the exhaust gas can enter the main body 1 , and an air outlet 8 is fixedly connected to the right side of the main body 1 , through which the exhaust gas can be discharged from the main body 1 .

[0032] Working principle: multiple filter bags 205 connected to the fixed frame 204 are placed in sequence according to the filtration level, the F5-level filter bag is near the air inlet 7, and the F9-level filter bag is far away from the air inlet 7. After the placement is completed, the first pressing block 207 and the second pressing block 210 are placed on the first bolt 206 and the second bolt 209 respectively and adjust the position, and then rotate the first nut 208 and the second nut 211 to fix the first pressing block 207 and the second pressing block 210, so as to restrict and fix the fixed frame 204, that is, the filter bag 205 is fixed.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage bag filter system, comprising a main body (1), characterized in that: A filter assembly (2) is installed inside the main body (1), and the filter assembly (2) comprises a first mounting plate (201), the lower surface of the first mounting plate (201) is fixedly connected to the inner bottom surface of the main body (1), the upper surface of the first mounting plate (201) is fixedly connected to a second mounting plate (202), the upper end of the second mounting plate (202) is fixedly connected to a third mounting plate (203), the two ends of the third mounting plate (203) are respectively fixedly connected to the inner surfaces of both sides of the main body (1), and a fixing frame (204) is provided on the surface of the third mounting plate (203), and the fixing frame A filter bag (205) is fixedly connected to the inner surface of (204), a first bolt (206) is fixedly connected to the surface of the second mounting plate (202), a first pressure block (207) is movably connected to the outer surface of the first bolt (206), a first nut (208) is threadedly connected to the outer surface of the first bolt (206), a second bolt (209) is fixedly connected to the surface of the third mounting plate (203), a second pressure block (210) is movably connected to the outer surface of the second bolt (209), and a second nut (211) is threadedly connected to the outer surface of the second bolt (209).

2. A multi-stage bag filter system according to claim 1, characterized in that: The filter assembly (2) is divided into three layers, and the three layers of the filter assembly (2) are arranged at equal distances.

3. A multi-stage bag filter system according to claim 1, characterized in that: The filter bags (205) are divided into three levels, and the three levels of filter bags (205) are respectively F5-level filter bags, F7-level filter bags and F9-level filter bags.

4. A multi-stage bag filter system according to claim 1, characterized in that: A patch plate (3) is fixedly connected to the front of the main body (1), and a differential pressure meter (4) is fixedly connected to the surface of the patch plate (3), and the number of the differential pressure meters (4) is plural.

5. The multi-stage bag filter system according to claim 1, characterized in that: An inlet and outlet (5) is provided on the front of the main body (1), and there are a plurality of inlet and outlet (5). The plurality of inlet and outlet (5) are all located below the differential pressure meter (4), and an inspection door (6) is provided inside the inlet and outlet (5).

6. A multi-stage bag filter system according to claim 1, characterized in that: The left side surface of the main body (1) is fixedly connected with an air inlet (7), and the right side surface of the main body (1) is fixedly connected with an air outlet (8).

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