Medium-efficiency bag filter with high sealing performance

Abstract

The utility model discloses a medium-efficiency bag filter with high sealing performance, which relates to the technical field of medium-efficiency bag filters and comprises a lower frame and an upper frame, the lower frame is formed by encircling long-strip-shaped pipes, a plurality of filter bag grooves are fixed in the lower frame, the tops of the filter bag grooves protrude out of the lower frame, filter bags are sleeved on the filter bag grooves, and the upper frame is fixed on the upper frame. Clamping grooves with certain intervals are reserved between the adjacent filter bag grooves, pressing strips are clamped in the clamping grooves, an inner frame is fixed to the inner side of the upper frame, the depth of the bottom of the upper frame and the depth of the bottom of the inner frame are matched with the protruding distance between the tops of the filter bag grooves and the lower frame, and hasps are fixed to the side edges of the lower frame and the upper frame. The technical problem of air leakage caused by untight sealing of the edge and the outer frame is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medium-efficiency bag filters, in particular to a medium-efficiency bag filter with high sealing performance. Background Art

[0002] Medium-efficiency bag filters can be used for intermediate filtration in air-conditioning systems to protect the next-level filters and the system itself. In places where air purification cleanliness is not strictly required, the air treated by the medium-efficiency filter can be directly delivered to the user. It is mostly used as a secondary filtration filter in hospitals, electronics factories, paint rooms, dust-free rooms, and clean systems. Existing medium-efficiency bag filters are usually assembled from an outer frame and a filter bag. The filter bag is assembled on the outer frame, and the outer frame and the filter bag are integrated into one by simple compaction. Due to long-term air extrusion, the edge of the filter bag may not be tightly sealed with the outer frame, resulting in unfiltered air leaking from the air leak, which leads to poor filtering effect. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a medium-efficiency bag filter with high sealing performance.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A medium-efficiency bag filter with high sealing performance comprises a lower frame and an upper frame. The lower frame is surrounded by a long strip of tubular material. A plurality of filter bag slots are fixed inside the lower frame. The tops of the filter bag slots protrude from the lower frame. Filter bags are sleeved on the filter bag slots. A certain spacing of engaging slots is left between adjacent filter bag slots. Pressure strips are stuck in the engaging slots. An inner frame is fixed on the inner side of the upper frame. The depth of the bottom of the upper frame and the bottom of the inner frame matches the distance between the top of the filter bag slot and the protrusion of the lower frame. Buckles are fixed on the sides of the lower frame and the upper frame.

[0006] As a further solution of the utility model: a filter bag groove pressure ring is also arranged on the outside of each filter bag groove.

[0007] As a further solution of the utility model: buckle flat hooks are fixed on the outer sides of the lower frame, and buckle curved hooks are fixed on the outer sides of the upper frame.

[0008] As a further solution of the utility model: the pressure strip is fixed on the upper frame, and a fastening pressure strip is also fixed above the pressure strip.

[0009] As a further solution of the utility model: threaded holes are opened at four corners of the lower frame and the upper frame, and the threaded holes cooperate with bolts to lock the lower frame and the upper frame.

[0010] As a further solution of the utility model: the lower frame and the filter bag groove are an integrated molding structure.

[0011] As a further solution of the utility model: one side of the lower frame and the upper frame is connected by a hinge, and the other three sides of the lower frame and the upper frame are fixed with buckles.

[0012] As a further solution of the utility model: the filter bag slot is a rectangular structure, and the number of the filter bag slots is 6.

[0013] The beneficial effects of the utility model are as follows: the upper frame and the lower frame are locked, and a filter bag groove pressure ring is sleeved around each filter bag groove, and the airtightness is ensured by the installation method of pressing with multiple pressure strips; BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the upper frame of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the combination of the upper frame and the lower frame of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the buckle assembly of the utility model;

[0019] In the figure: 1. lower frame; 2. upper frame; 3. inner frame; 4. filter bag; 5. pressure strip; 51. fastening pressure strip; 6. filter bag slot; 61. filter bag slot pressure ring; 7. snap-fit ​​slot; 8. buckle flat hook; 9. buckle bent hook; 10. hinge; 11. threaded hole; 12. bolt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1:

[0022] Please refer to Figure 1-3As shown, the utility model is a medium-efficiency bag filter with high sealing performance, including a lower frame 1 and an upper frame 2. The lower frame 1 is a structure formed by surrounding a long strip of tubular material. A plurality of filter bag slots 6 are fixed inside the lower frame 1. In order to ensure the stability and consistency of the structure, the lower frame 1 and the filter bag slots 6 are preferably an integrated structure. The filter bag slots 6 are rectangular structures. The number of the filter bag slots 6 is set to 6. The top of the filter bag slots 6 protrudes from the lower frame 1. The filter bag 4 is sleeved on the filter bag slots 6. A certain spacing of snap-fitting grooves 7 are left between adjacent filter bag slots 6. A pressure strip 5 is clamped in the snap-fitting grooves 7. When the filter bag is sleeved on the filter bag slots 6, the pressure strip 5 can press the two sides of the filter bag. In order to ensure further sealing, a filter bag slot pressure ring 61 is also provided on the outside of each filter bag slot 6. When the filter bag is installed, the filter bag slot pressure ring 61 is first sleeved on the four sides of the filter bag slot 6, and then the pressure strip is pressed in the snap-fitting groove 7. 5; An inner frame 3 is fixed to the inner side of the upper frame 2, the depth of the bottom of the upper frame 2 and the bottom of the inner frame 3 and the distance between the top of the filter bag groove 6 and the protrusion of the lower frame 1 match, the lower frame 1 and the upper frame 2 can be perfectly matched when covered, the outer side of the lower frame 1 is fixed with buckle flat hooks 8, the outer side of the upper frame 2 is fixed with buckle curved hooks 9, after the lower frame 1 and the upper frame 2 are covered, the lower frame 1 and the upper frame 2 are firmly locked by the buckle, so that the whole medium-efficiency bag filter shows excellent sealing performance and stable structural characteristics.

[0023] Since no pressure is applied in the middle of the pressure strip 5, in order to prevent it from being loose, the pressure strip 5 can be directly fixed on the upper frame 2. A plurality of fastening pressure strips 51 are fixed above the pressure strip 5. When the pressure strip 5 is inserted into the engaging groove 7, the fastening pressure strip 51 can apply a lateral force to the pressure strip 5. At the same time, threaded holes 11 are opened at the relative positions of the four corners of the lower frame 1 and the upper frame 2. When the lower frame 1 and the upper frame 2 are closed, the threaded holes 11 cooperate with the bolts 12 to lock the lower frame 1 and the upper frame 2.

[0024] Embodiment 2:

[0025] See also Figure 4 As shown: On the basis of the above, the lower frame 1 and the upper frame 2 are split structures. In order to facilitate the closing of the lower frame 1 and the upper frame 2, the lower frame 1 and the upper frame 2 can be set as an integrated structure. The two sides of one side of the lower frame 1 and the upper frame 2 are connected by hinges 10, and the other three sides of the lower frame 1 and the upper frame 2 are fixed with buckles. When replacing the filter bag, it can be opened and closed by flipping.

[0026] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A medium-efficiency bag filter with high sealing performance, characterized in that: The invention comprises a lower frame (1) and an upper frame (2), wherein the lower frame (1) is surrounded by a long strip of tubular material, a plurality of filter bag slots (6) are fixed inside the lower frame (1), the top of the filter bag slots (6) protrudes from the lower frame (1), a filter bag (4) is sleeved on the filter bag slots (6), a clamping slot (7) with a certain spacing is left between adjacent filter bag slots (6), a pressure strip (5) is clamped in the clamping slots (7), an inner frame (3) is fixed inside the upper frame (2), the depth of the bottom of the upper frame (2) and the bottom of the inner frame (3) and the distance between the top of the filter bag slots (6) and the protrusion of the lower frame (1) are consistent, and buckles are fixed on the sides of the lower frame (1) and the upper frame (2).

2. A medium-efficiency bag filter with high sealing performance according to claim 1, characterized in that: A filter bag groove pressure ring (61) is also provided on the outside of each filter bag groove (6).

3. A medium-efficiency bag filter with high sealing performance according to claim 2, characterized in that: The outer sides of the lower frame (1) are all fixed with buckle flat hooks (8), and the outer sides of the upper frame (2) are all fixed with buckle curved hooks (9).

4. A medium-efficiency bag filter with high sealing performance according to claim 3, characterized in that: The pressure strip (5) is fixed on the upper frame (2), and a fastening pressure strip (51) is also fixed above the pressure strip (5).

5. A medium-efficiency bag filter with high sealing performance according to claim 4, characterized in that: The four corners of the lower frame (1) and the upper frame (2) are provided with threaded holes (11), and the threaded holes (11) cooperate with bolts (12) to lock the lower frame (1) and the upper frame (2).

6. A medium-efficiency bag filter with high sealing performance according to claim 1, characterized in that: The lower frame (1) and the filter bag groove (6) are an integrated structure.

7. A medium-efficiency bag filter with high sealing performance according to claim 1, characterized in that: One side of the lower frame (1) and the upper frame (2) are connected via a hinge (10), and the other three sides of the lower frame (1) and the upper frame (2) are fixed with buckles.

8. A medium-efficiency bag filter with high sealing performance according to claim 1, characterized in that: The filter bag slots (6) are rectangular structures, and the number of the filter bag slots (6) is 6.

Images