Medium-efficiency bag type filter with quickly-detached filter bag

Abstract

The utility model relates to the technical field of dust removal, and discloses a medium-efficiency bag filter with a quickly-detached filter bag, which comprises a shell and a top cover, the filtering unit comprises a limiting frame, unit frames, a pressing plate, a pressing plate and ribs, the limiting frame is fixedly connected with the shell, the multiple unit frames are connected to the top of the limiting frame in an inserted mode, one rib is connected to the tops of every two adjacent unit frames in a clamped mode, the pressing plate is rotationally connected with the shell, and the ribs are placed at the tops of every two adjacent unit frames, so that the filtering effect is improved; the pressing plate is turned over, the ribs are pressed downwards through the pressing plate, the ribs provide downward pressing force for the unit frames, meanwhile, the inclined faces of the unit frames exert extrusion and pushing force on the two adjacent unit frames in the horizontal direction, the two adjacent unit frames are tightly attached, the filtering effect is further guaranteed, a ridge-shaped ridge line is formed at the tops of the unit frames, and therefore the filtering effect is improved. When air flow flowing downwards impacts the unit frame and the filter cloth, blocking of the top of the unit frame to air can be reduced, air resistance is reduced, and then the load of the fan is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal, in particular to a filter bag quick-release medium-efficiency bag filter. Background Art

[0002] A bag filter is an air filtration device, commonly used in air supply systems such as central air conditioners to filter dust particles in the air, playing a role in purifying the air and reducing odors.

[0003] The prior art discloses a medium-efficiency bag filter (Publication No.: CN208553444U), including: an outer frame surrounded by long strip-shaped pipes, a clamping groove is arranged inside the long strip-shaped pipes, and the clamping groove penetrates through the long strip-shaped pipes; a plurality of inner frames arranged side by side and clamped in the clamping grooves of the outer frame, riveting holes are arranged on the frame edges of adjacent inner frames, and the riveting holes are connected with adjacent inner frames by riveting parts; a plurality of filter bags, the filter bags cooperate with the inner frames, and the openings of the filter bags are fixed on the inner frames.

[0004] In the prior art, the filter frame is fixed by rivets. For later maintenance, the rivets need to be removed first, and then re-riveted after replacement. This method is not conducive to the replacement and maintenance of filter materials, making the maintenance work inconvenient to a certain extent and having a certain room for optimization.

[0005] Therefore, we propose a filter bag quick-release medium-efficiency bag filter. Summary of the Utility Model

[0006] The utility model mainly solves the technical problems existing in the above prior art, and provides a filter bag quick-release medium-efficiency bag filter.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme. A filter bag quick-release medium-efficiency bag filter includes:

[0008] A housing and a top cover, the top cover is hinged to the housing to form a sealed box structure, an air inlet pipe for air intake is fixedly arranged on the top of the top cover, an air extraction pipe for air extraction is fixedly arranged on the side wall of the housing, and the air extraction pipe is connected with a fan;

[0009] A filtering unit detachably arranged in the cavity of the housing for filtering gas, the filtering unit includes a limiting frame, a unit frame, a pressing plate, a pressing plate and a rib. The limiting frame is fixedly connected with the housing, a plurality of unit frames are inserted into the top of the limiting frame, a rib is clamped at the top of adjacent two unit frames, the pressing plate is rotatably connected with the housing, and the pressing plate can press down the rib to press the unit frame tightly on the top of the limiting frame;

[0010] A limiting component arranged on the inner wall of the housing for pressing down the end of the limiting pressing plate.

[0011] As a preferred embodiment of the present utility model, both the limiting frame and the unit frame are rectangular frame structures. A filter cloth is fixedly installed at the bottom of the unit frame. A plurality of unit frames jointly fill the hollow part of the limiting frame. A flanging is integrally formed at the top of the unit frame, and the flanging extends to the top surface of the limiting frame.

[0012] As a preferred embodiment of the present utility model, the pressing plate forms a rectangular rod structure. One end of the pressing plate is rotatably connected to the inner side wall of the housing. The other end of the pressing plate forms a free end. The length of the pressing plate is less than the length of the cavity inside the limiting frame, and the pressing plate can be flipped to a vertical displacement.

[0013] As a preferred embodiment of the present utility model, the rib forms a folded plate structure with a V-shaped cross section, and the concave surface of the rib faces the unit frame.

[0014] As a preferred embodiment of the present utility model, the limiting component includes a first limiting plate, a second limiting plate, and an elastic telescopic rod. The second limiting plate is rotatably connected to the first limiting plate. The elastic telescopic rod is arranged above the first limiting plate, and the elastic telescopic rod can push down the first limiting plate so that the second limiting plate abuts against the top surface of the pressing plate.

[0015] As a preferred embodiment of the present utility model, both the first limiting plate and the second limiting plate are rectangular plates. The second limiting plate is rotatably connected to the bottom of the first limiting plate. The second limiting plate can be flipped to a vertical position and form an L-shaped folded plate with the first limiting plate. When the second limiting plate is flipped to the vertical position, the pressing plate is located on one side of the first limiting plate and does not contact the first limiting plate.

[0016] As a preferred embodiment of the present utility model, the elastic telescopic rod is fixedly installed on the inner side wall of the housing, and the output shaft of the elastic telescopic rod is fixedly connected to the top surface of the first limiting plate.

[0017] The present utility model provides a filter bag quick-release medium-efficiency bag filter. It has the following beneficial effects:

[0018] 1. For this filter bag quick-release medium-efficiency bag filter, by placing the unit frame on the limiting frame, a plurality of unit frames jointly fill the limiting frame. By placing the rib on the top of adjacent two unit frames and flipping the pressing plate, when the pressing plate presses down the rib, while the rib provides a downward pressing force for the unit frame, it gives a horizontal pushing force to adjacent two unit frames through the inclined surface of the unit frame, so that adjacent two unit frames are kept in close contact, thereby ensuring the filtering effect. Secondly, a ridge line in the shape of a roof is formed at the top of the unit frame. When the downward flowing air flow impacts the unit frame and the filter cloth, it can reduce the blockage of the air by the top of the unit frame, reduce the air resistance, and thus reduce the load of the fan. The detachable unit frame is more convenient and flexible to replace and is easy to maintain.

[0019] 2. For this medium - efficiency bag filter with quick - release filter bags, by flipping the pressure plate to the vertical position, each unit frame can be pulled out one by one. An ear plate is fixedly connected to the inner side wall of the housing, and the pressure plate is rotatably connected to the ear plate. After replacing the new unit frame, flip the unit frame to the horizontal position, then flip the elastic telescopic rod to the horizontal position. Push up the second limit plate, and the second limit plate pushes the first limit plate and the output shaft of the elastic telescopic rod upward. Then release the second limit plate, and the second limit plate is pushed downward to abut against the top surface of the pressure plate, thereby providing a downward pressure to the pressure plate, ensuring the limiting effect on each unit frame, achieving quick disassembly and assembly, facilitating later maintenance, with convenient disassembly and high efficiency. Brief Description of the Drawings

[0020] Figure 1 One of the overall three - dimensional views of the present utility model;

[0021] Figure 2 Another overall three - dimensional view of the present utility model;

[0022] Figure 3 Partial sectional view of the housing of the present utility model;

[0023] Figure 4 Three - dimensional view of the limiting component of the present utility model;

[0024] Figure 5 Three - dimensional view of the rib of the present utility model.

[0025] Legend Explanation: 10, housing; 11, top cover; 12, air inlet pipe; 13, air extraction pipe; 20, limiting frame; 21, unit frame; 22, pressure plate; 23, rib; 30, first limit plate; 31, second limit plate; 32, elastic telescopic rod. Detailed Description of the Embodiment

[0026] A medium - efficiency bag filter with quick - release filter bags, as Figure 1 and Figure 2 shown, includes:

[0027] A housing 10 and a top cover 11. The top cover 11 is hinged to the housing 10 to form a sealed box structure. A air inlet pipe 12 for air intake is fixedly provided at the top of the top cover 11, and an air extraction pipe 13 for air extraction is fixedly provided on the side wall of the housing 10. The air extraction pipe 13 is connected to a fan, and the fan needs to be connected to a power supply. Taking the centrifugal fan as an example, specific specifications are not limited too much here. By extracting air through the air extraction pipe 13, the air inlet pipe 12 sucks air into the cavity of the housing 10, and after filtration, it is discharged through the air extraction pipe 13 to achieve the purpose of dust removal;

[0028] As Figure 2 、 Figure 3 and Figure 5As shown, a filtering unit is detachably arranged in the cavity of the housing 10 for filtering gas. The filtering unit includes a limiting frame 20, a unit frame 21, a pressing plate 22, and a rib 23. The limiting frame 20 is fixedly connected to the housing 10. A plurality of unit frames 21 are inserted into the top of the limiting frame 20. A rib 23 is clamped on the top of adjacent two unit frames 21. The pressing plate 22 is rotatably connected to the housing 10. The pressing plate 22 can press down the rib 23 to press the unit frame 21 tightly on the top of the limiting frame 20. Both the limiting frame 20 and the unit frame 21 are rectangular frame structures. A filter cloth is fixedly installed at the bottom of the unit frame 21. A plurality of unit frames 21 jointly fill the hollow part of the limiting frame 20. A flanging is integrally formed at the top of the unit frame 21, and the flanging extends to the top surface of the limiting frame 20. The pressing plate 22 forms a rectangular rod structure. One end of the pressing plate 22 is rotatably connected to the inner side wall of the housing 10, and the other end of the pressing plate 22 forms a free end. The length of the pressing plate 22 is less than the length of the cavity in the limiting frame 20. The pressing plate 22 can be flipped to a vertical displacement. The rib 23 forms a folded plate structure with a V-shaped cross section, and the concave surface of the rib 23 faces the unit frame 21. In this solution, by placing the unit frame 21 on the limiting frame 20, a plurality of unit frames 21 jointly fill the limiting frame 20. By placing the rib 23 on the top of adjacent two unit frames 21 and flipping the pressing plate 22, when the pressing plate 22 presses down the rib 23, while the rib 23 provides a downward pressing force for the unit frame 21, a horizontal pushing force is given to adjacent two unit frames 21 through the inclined surface of the unit frame 21, so that adjacent two unit frames 21 are kept in close fit, thereby ensuring the filtering effect. Secondly, a ridge line in the shape of a roof is formed at the top of the unit frame 21. When the downward flowing air flow impacts the unit frame 21 and the filter cloth, the blockage of the air by the top of the unit frame 21 can be reduced, the air resistance can be reduced, and thus the load of the fan can be reduced.

[0029] As Figure 3 and Figure 4As shown in the figure, a limit component is provided on the inner wall of the housing 10 for pressing down the end of the limit pressing plate 22. The limit component includes a first limit plate 30, a second limit plate 31, and an elastic telescopic rod 32. The second limit plate 31 is rotatably connected to the first limit plate 30. The elastic telescopic rod 32 is arranged above the first limit plate 30. The elastic telescopic rod 32 can push down the first limit plate 30 so that the second limit plate 31 abuts against the top surface of the pressing plate 22. Both the first limit plate 30 and the second limit plate 31 are rectangular plates. The second limit plate 31 is rotatably connected to the bottom of the first limit plate 30. The second limit plate 31 can be flipped to a vertical position and form an L-shaped folding plate with the first limit plate 30. When the second limit plate 31 is flipped to the vertical position, the pressing plate 22 is located on one side of the first limit plate 30 and does not contact the first limit plate 30. The elastic telescopic rod 32 is fixedly installed on the inner side wall of the housing 10, and the output shaft of the elastic telescopic rod 32 is fixedly connected to the top surface of the first limit plate 30. As a supplementary description of the above solution, by flipping the pressing plate 22 to the vertical position, each unit frame 21 can be pulled out one by one. The inner side wall of the housing 10 is fixedly connected with an ear plate, and the pressing plate 22 is rotatably connected to the ear plate. After replacing the new unit frame 21, the unit frame 21 is flipped to the horizontal position, and then the elastic telescopic rod 32 is flipped to the horizontal position. Push up the second limit plate 31, and the second limit plate 31 pushes the first limit plate 30 and the output shaft of the elastic telescopic rod 32 to move upward. Then release the second limit plate 31, and the second limit plate 31 is pushed down to abut against the top surface of the pressing plate 22, thereby providing a downward pressure to the pressing plate 22, ensuring the limiting effect on each unit frame 21, realizing quick disassembly and assembly, facilitating later maintenance and repair, being convenient for disassembly and assembly, having high efficiency, and the rotatable second limit plate 31 can avoid the flipping pressing plate 22, preventing movement interference.

[0030] The working principle of the present utility model: Place the unit frame 21 on the limit frame 20, and multiple unit frames 21 together fill the limit frame 20. By placing the rib 23 on the top of two adjacent unit frames 21 and flipping the pressing plate 22, the pressing plate 22 presses down the rib 23. While the rib 23 provides a downward pressure to the unit frame 21, it gives a horizontal pushing force to two adjacent unit frames 21 through the inclined surface of the unit frame 21, so that the two adjacent unit frames 21 are kept in close contact. Flip the pressing plate 22 to the vertical position, and each unit frame 21 can be pulled out one by one. The inner side wall of the housing 10 is fixedly connected with an ear plate, and the pressing plate 22 is rotatably connected to the ear plate. After replacing the new unit frame 21, the unit frame 21 is flipped to the horizontal position, and then the elastic telescopic rod 32 is flipped to the horizontal position. Push up the second limit plate 31, and the second limit plate 31 pushes the first limit plate 30 and the output shaft of the elastic telescopic rod 32 to move upward. Then release the second limit plate 31, and the second limit plate 31 is pushed down to abut against the top surface of the pressing plate 22, thereby realizing the limiting and locking of the unit frame 21.

[0031] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A medium-efficiency bag filter with quick-detachable filter bag, characterized in that: include: An outer shell (10) and a top cover (11), wherein the top cover (11) is hingedly connected to the outer shell (10) to form a sealed box structure, an air intake pipe (12) for air intake is fixedly provided on the top of the top cover (11), an air exhaust pipe (13) for air exhaust is fixedly provided on the side wall of the outer shell (10), and the air exhaust pipe (13) is connected to a fan; A filter unit is detachably arranged in a cavity of a housing (10) for filtering gas, the filter unit comprising a limit frame (20), a unit frame (21), a pressure plate (22), a pressure plate (22) and a rib (23), the limit frame (20) being fixedly connected to the housing (10), a plurality of unit frames (21) being plugged into the top of the limit frame (20), a rib (23) being clamped at the top of two adjacent unit frames (21), the pressure plate (22) being rotatably connected to the housing (10), and the pressure plate (22) being able to press the rib (23) downward to press the unit frame (21) tightly against the top of the limit frame (20); A limit assembly is arranged on the inner wall of the housing (10) and is used to press down the end of the limit pressing plate (22).

2. The filter bag quick-detachable medium-efficiency bag filter according to claim 1 is characterized in that: The limiting frame (20) and the unit frame (21) are both rectangular frame structures; a filter cloth is fixedly mounted on the bottom of the unit frame (21); a plurality of unit frames (21) together fill the hollow portion of the limiting frame (20); and an integrally formed flange is provided on the top of the unit frame (21), the flange extending to the top surface of the limiting frame (20).

3. The filter bag quick-detachable medium-efficiency bag filter according to claim 1 is characterized in that: The pressing plate (22) forms a rectangular rod structure, one end of the pressing plate (22) is rotatably connected to the inner wall of the outer shell (10), and the other end of the pressing plate (22) forms a free end. The length of the pressing plate (22) is less than the length of the cavity of the limiting frame (20), and the pressing plate (22) can be flipped to a vertical displacement.

4. The filter bag quick-detachable medium-efficiency bag filter according to claim 1 is characterized in that: The ribs (23) form a folded plate structure with a V-shaped cross section, and the concave surface of the ribs (23) faces the unit frame (21).

5. The filter bag quick-detachable medium-efficiency bag filter according to claim 1 is characterized in that: The limiting assembly comprises a first limiting plate (30), a second limiting plate (31) and an elastic telescopic rod (32); the second limiting plate (31) is rotatably connected to the first limiting plate (30); the elastic telescopic rod (32) is arranged above the first limiting plate (30); the elastic telescopic rod (32) can push down the first limiting plate (30) so that the second limiting plate (31) contacts the top surface of the pressure plate (22).

6. The filter bag quick-detachable medium-efficiency bag filter according to claim 5 is characterized in that: The first limiting plate (30) and the second limiting plate (31) are both rectangular plates. The second limiting plate (31) is rotatably connected to the bottom of the first limiting plate (30). The second limiting plate (31) can be flipped to a vertical position and form an L-shaped folded plate with the first limiting plate (30). When the second limiting plate (31) is flipped to a vertical position, the pressure plate (22) is located on one side of the first limiting plate (30) and does not contact the first limiting plate (30).

7. The filter bag quick-detachable medium-efficiency bag filter according to claim 5, characterized in that: The elastic telescopic rod (32) is fixedly mounted on the inner side wall of the housing (10), and the output shaft of the elastic telescopic rod (32) is fixedly connected to the top surface of the first limiting plate (30).

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