Medium efficiency bag filter

Abstract

The utility model relates to a medium-efficiency bag type filter, which belongs to the technical field of filters, and comprises a filter body with a fixed frame and a filter bag, a mounting frame and a locking piece, the lower end of the mounting frame is provided with a first sinking groove matched with the fixed frame, and the lower end of the mounting frame is also provided with a pressing assembly used for pressing the fixed frame in the first sinking groove; a second sinking groove is formed in the upper end of the mounting frame, a limiting frame is arranged in the second sinking groove, a filter screen is arranged in the limiting frame, and the locking piece is used for locking the limiting frame in the second sinking groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field, especially a kind of medium-efficiency bag filter. BACKGROUND

[0002] Bag filter is a kind of air filter device, commonly used in central air conditioning and other air supply systems, filter dust particles in air, play the role of clean air reducing odor. Bag filter compared with other filter equipment has the advantages of large filter area, large dust capacity, large ventilation capacity.

[0003] At present, the existing patent CN202569838U discloses a kind of medium-efficiency bag filter, including: a frame;Filter bag, the opening of the filter bag is connected to the frame;Keel frame, the keel frame is set at the inner side of the frame;The filter bag is multiple, and the multiple filter bags are fixedly connected on the frame by the keel frame. The device does not set a filter screen for pretreatment, which leads to the whole filter being easily damaged, reduces the service life of the whole filter and increases the maintenance cost. SUMMARY

[0004] In view of the problems in the prior art, the utility model provides a kind of.

[0005] The technical scheme adopted by the utility model to solve the above technical problems is: a kind of medium-efficiency bag filter, including the filter body with fixed frame and filter bag, further including mounting frame and locking part, the first sink of cooperation with fixed frame is equipped in the lower end of mounting frame, the first sink is further equipped in the lower end of mounting frame for the compression assembly for compressing fixed frame in the first sink.

[0006] The second sink is equipped in the upper end of mounting frame, and the limit frame is equipped in the second sink, and the filter screen is equipped in the limit frame, and the locking part is used to lock the limit frame in the second sink.

[0007] As a preferred scheme, the bottom of the first sink is provided with a third sink, and a sealing ring is arranged in the third sink and abuts against the fixed frame, and the sealing ring is in rectangular shape.

[0008] As a preferred scheme, the compression assembly includes a pressing plate arranged at the lower end of the mounting frame and in contact with the lower end of the fixed frame, and a compression bolt arranged on the pressing plate, and the lower end of the mounting frame is provided with a first bolt hole matched with the compression bolt.

[0009] As a preferred scheme, a rotating shaft is fixedly arranged on the pressing plate, and the upper end of the rotating shaft is rotatably connected with the lower end of the mounting frame.

[0010] As a preferred scheme, the lower end of the limit frame is provided with a protrusion, and the bottom of the second sink is provided with a groove matched with the protrusion.

[0011] As a preferred scheme, the locking piece comprises a first locking bolt, the limiting frame is provided with a stepped through hole matched with the first locking bolt, and the mounting frame is provided with a second bolt hole matched with the first locking bolt.

[0012] As a preferred scheme, the locking piece comprises a second locking bolt, the second locking bolt is arranged on the outer wall of the mounting frame, and a screw rod of the second locking bolt abuts against the outer wall of the limiting frame to lock the limiting frame.

[0013] As a preferred scheme, the second locking bolt is a butterfly bolt.

[0014] The application has the following beneficial effects: 1. The second groove is arranged, the limiting frame is locked in the second groove by the locking piece, the limiting frame and the filter screen arranged in the limiting frame are arranged, the air can be pre-filtered, the impurities in the air can be prevented from directly damaging the filter bag, and the service life of the filter is prolonged.

[0015] 2. The locking piece is the first locking bolt or the second locking bolt, the limiting frame is convenient to disassemble and assemble, and the filter screen in the limiting frame is convenient to clean and replace.

[0016] 3. The fixing frame is pressed in the first groove by the pressing assembly, the pressing assembly comprises a pressing plate and a pressing bolt, the fixing frame is convenient to disassemble and assemble, and the filter body is convenient to quickly disassemble and clean.

[0017] 4. The sealing ring is arranged, air tightness of the connection between the mounting frame and the fixing frame is guaranteed, and unfiltered air is prevented from leaking from the connection between the mounting frame and the fixing frame. DRAWINGS

[0018] Figure 1 Fig. 1 is a structural schematic view of the embodiment 1 of the application;

[0019] Figure 2 Fig. 2 is a top view of the limiting frame of the embodiment 1 of the application;

[0020] Figure 3 Fig. 3 is a structural schematic view of the embodiment 2 of the application.

[0021] Marked in the figure: 1, filter body, 11, fixing frame, 2, filter bag, 3, limiting frame, 31, protrusion, 32, stepped through hole, 4, filter screen, 5, first locking bolt, 6, pressing assembly, 61, pressing plate, 62, pressing bolt, 63, rotating shaft, 7, sealing ring, 8, second locking bolt. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that, in the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the directions or position relations indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] Please refer to Figures 1-2 The utility model embodiment 1 provides a kind of medium-efficiency bag filter, including the filter body 1 with fixed frame 11 and filter bag 12, filter bag 12 is multiple, multiple filter bag 12 is arranged at the lower end of fixed frame 11 with interval, further include mounting frame 2 and locking part, the first sink groove of mounting frame 2 lower end is equipped with with fixed frame 11 cooperation, the lower end of mounting frame 2 is further equipped with the compression assembly 6 for the fixed frame 11 be compressed in first sink groove;Mounting frame 2 upper end is equipped with second sink groove, second sink groove is equipped with limit frame 3, limit frame 3 is equipped with filter screen 4, locking part is used to lock limit frame 3 in second sink groove.

[0024] Wherein, in combination Figure 1 As shown in the drawing, the bottom of first sink groove is equipped with third sink groove, third sink groove is equipped with the sealing ring 7 that is resisted with fixed frame 11, sealing ring 7 is rectangular. Setting sealing ring 7, guarantee the air-tightness of the connection of mounting frame 2 and fixed frame 11, avoid the air that is not filtered from the connection of mounting frame 2 and fixed frame 11 leakage.

[0025] Specifically, the plurality of compression assemblies 6 are arranged along the circumference of the mounting frame 2, and more specifically, the number of the compression assemblies 6 is four. The compression assembly 6 comprises a pressing plate 61 arranged at the lower end of the mounting frame 2 and in contact with the lower end of the fixed frame 11, and a compression bolt 62 arranged on the pressing plate 61. The lower end of the mounting frame 2 is provided with a first bolt hole matched with the compression bolt 62. The pressing plate 61 is fixedly provided with a rotating shaft 63, and the upper end of the rotating shaft 63 is rotatably connected to the lower end of the mounting frame 2 without axial displacement. When locked, the pressing plate 61 is rotated to be in contact with the lower end of the fixed frame 11, and then the compression bolt 62 is tightened, so that the screw rod of the compression bolt 62 is screwed into the first bolt hole, and the pressing plate 61 presses the fixed frame 11 in the first recess. When unlocked, the compression bolt 62 is loosened, so that the compression bolt 62 is separated from the first bolt hole, and then the pressing plate 61 is rotated to be away from the fixed frame 11 and not in contact with the bottom of the fixed frame 11, so that the fixed frame 11 can be separated from the first recess. Therefore, the fixed frame 11 is convenient to disassemble and assemble, and the filter body 1 can be quickly disassembled and cleaned.

[0026] In addition, in combination with Figure 1 As shown in the drawings, the lower end of the limiting frame 3 is provided with a protrusion 31, and the bottom of the second recess is provided with a groove matched with the protrusion 31. The locking member comprises four first locking bolts 5, which are located at the corners of the limiting frame 3. The limiting frame 3 is provided with a stepped through hole 32 matched with the first locking bolt 5, and the stepped through hole 32 comprises a counterbore and a mounting through hole located at the bottom of the counterbore. The screw rod of the first locking bolt 5 passes through the counterbore and the mounting through hole, and the head of the first locking bolt 5 abuts against the bottom of the counterbore. The mounting frame 2 is provided with a second bolt hole matched with the first locking bolt 5.

[0027] The second recess is arranged, the limiting frame 3 is locked in the second recess by the locking member, the limiting frame 3 and the filter screen 4 located in the limiting frame 3 are arranged, so that the air can be pre-filtered, and the impurities in the air can not directly damage the filter bag 12, thereby prolonging the service life of the filter body 1.

[0028] Of course, the utility model is not limited to the above-mentioned embodiments, and the following provides several other embodiments based on the design concept of the utility model.

[0029] For example, in embodiment 2, unlike the above-mentioned embodiments, as shown in Figure 3As shown, the locking piece of the embodiment includes four second locking bolts 8, which are uniformly distributed along the circumferential direction of the mounting frame 2, are arranged on the outer wall of the mounting frame 2, and have screw rod portions abutting against the outer wall of the limiting frame 3 to achieve locking of the limiting frame 3. The second locking bolts 8 are butterfly bolts.

[0030] The locking piece of the application is the first locking bolt 5 or the second locking bolt 8, so that the limiting frame 3 is convenient to disassemble and install, and the filter screen 4 in the limiting frame 3 is convenient to clean and replace.

[0031] It should be noted that the above embodiment is only used to illustrate the present application, but the present application is not limited to the above embodiment, and any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiment all fall within the protection scope of the present application.

Claims

1. A medium-efficiency bag filter, comprising a filter body (1) having a fixing frame (11) and a filter bag (12), characterized in that, It also includes a mounting frame (2) and a locking component. The lower end of the mounting frame (2) is provided with a first recess that cooperates with the fixed frame (11). The lower end of the mounting frame (2) is also provided with a pressing component (6) for pressing the fixed frame (11) into the first recess. The upper end of the mounting frame (2) is provided with a second sinking groove, and a limiting frame (3) is provided in the second sinking groove. A filter screen (4) is provided in the limiting frame (3). The locking component is used to lock the limiting frame (3) in the second sinking groove.

2. A medium-efficiency bag filter according to claim 1, characterized in that: The bottom of the first sink is provided with a third sink, and a sealing ring (7) is provided in the third sink to abut against the fixed frame (11). The sealing ring (7) is rectangular.

3. A medium-efficiency bag filter according to claim 1, characterized in that: The clamping assembly (6) includes a pressure plate (61) disposed at the lower end of the mounting frame (2) and in contact with the lower end of the fixing frame (11) and a clamping bolt (62) disposed on the pressure plate (61). The lower end of the mounting frame (2) is provided with a first bolt hole that mates with the clamping bolt (62).

4. A medium-efficiency bag filter according to claim 3, characterized in that: A rotating shaft (63) is fixedly provided on the pressure plate (61), and the upper end of the rotating shaft (63) is rotatably connected to the lower end of the mounting frame (2).

5. A medium-efficiency bag filter according to claim 1, characterized in that: The lower end of the limiting frame (3) is provided with a protrusion (31), and the bottom of the second sink is provided with a groove that cooperates with the protrusion (31).

6. A medium-efficiency bag filter according to claim 5, characterized in that: The locking component includes a first locking bolt (5), a stepped through hole (32) on the limiting frame (3) that mates with the first locking bolt (5), and a second bolt hole on the mounting frame (2) that mates with the first locking bolt (5).

7. A medium-efficiency bag filter according to claim 5, characterized in that: The locking component includes a second locking bolt (8), which is disposed on the outer wall of the mounting frame (2). The screw portion of the second locking bolt (8) passes through the outer wall of the mounting frame (2) and abuts against the outer wall of the limiting frame (3) to lock the limiting frame (3).

8. A medium-efficiency bag filter according to claim 7, characterized in that: The second locking bolt (8) is a wing bolt.

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