A large air volume high efficiency filter

Abstract

The utility model relates to air purification equipment technical field, concretely is a kind of high efficiency filter of large air volume, it includes: fixed frame, filter core is equipped in fixed frame, vertical pressure rod is equipped in filter core windward face inboard, fixed frame back is equipped with horizontal support, and horizontal support includes first support strip and several shaping plate, shaping plate is inserted into filter core and bears against pressure rod, and fixed frame back and located horizontal support rear side are equipped with several longitudinal support, and longitudinal support presses first support strip.The utility model, cancel baffle and front side support, only set up leeward face support, reduce the eddy current of windward face while improve effective ventilation area;Filter core is pressed on inner baffle using horizontal support cooperation pressure rod, avoid filter core to fall off when large air volume;Using pressure rod cooperation shaping plate keeps filter core wrinkle shape, avoid wrinkle deformation under large air volume, resulting in the fluctuation of filtration efficiency and filter core damage.

Description

Technical Field

[0001] This utility model relates to the field of air purification equipment technology, specifically a high-volume, high-efficiency filter. Background Technology

[0002] High-efficiency particulate air (HEPA / ULPA) filters are critical equipment in cleanrooms, medical, and electronics manufacturing industries, used to capture particles larger than 0.3 micrometers, with filtration efficiencies typically required to be above 99.97%. Traditional filters primarily rely on filter media such as glass fiber, melt-blown polypropylene, or PTFE membranes, achieving high-efficiency filtration through the mechanical interception, inertial impaction, and diffusion effects of the fibers.

[0003] Currently, the support structure of high-efficiency filters can be divided into designs with and without separators. The former uses aluminum foil or plastic strips to hold the aluminum material pleats together, resulting in high structural stability; the latter uses hot melt adhesive to fix the pleats, leading to lower pressure drop. For the same inner diameter, the effective filtration area of ​​a separator design is smaller, resulting in greater airflow resistance. As airflow increases, the resistance rises faster than with a hot melt adhesive-fixed filter, leading to higher energy consumption. Furthermore, the hot melt adhesive fixing method has lower fixing strength, relying on the filter element's own structural strength to resist wind pressure. Under high airflow conditions, the front cover mesh is prone to generating eddies, causing the filter element pleats to vibrate, affecting filtration stability, and even leading to filter element detachment. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-volume, high-efficiency filter.

[0005] The technical solution of this utility model is:

[0006] A high-efficiency airflow filter, comprising:

[0007] A fixed frame is provided, and a filter element is provided inside the fixed frame. A pressure rod is vertically provided on the inner side of the air-facing surface of the filter element. A horizontal support is provided on the back of the fixed frame. The horizontal support includes a first support bar and several shaping plates. The shaping plates are inserted into the filter element and press against the pressure rod. Several longitudinal supports are provided on the back of the fixed frame and behind the horizontal support. The longitudinal supports press against the first support bar.

[0008] Preferably, the fixing frame includes a side plate, an inner baffle is provided on the inner side of the front part of the side plate, an outer baffle is provided on the outer side of the rear part of the side plate, and the pressure rod presses the filter element into the inner side of the inner baffle.

[0009] Preferably, the pressure bar includes a cylindrical shaping bar, and the back of the shaping bar is provided with a back rib in the axial direction.

[0010] Preferably, the shaping plate is triangular, and its shape and size are adapted to the pleated shape of the filter element.

[0011] Preferably, the front end of the shaping plate is provided with a positioning groove, and the positioning groove is adapted to the shape of the pressure rod.

[0012] Preferably, the two ends of the first support bar are fixedly connected to the outer baffle through the first fixing piece, and the rear side of the middle of the first support bar is provided with a plurality of first slots, which are engaged with the longitudinal support to restrict the left and right movement of the longitudinal support.

[0013] Preferably, the longitudinal support includes a second support bar, the two ends of which are fixedly connected to the outer baffle through a second fixing piece, and a second slot is provided on the front side of the middle part of the second support bar. The second slot is inserted into the first slot and engages with the first support bar to restrict the vertical movement of the first support bar.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention eliminates the partition and front support, only providing a leeward support, reducing windward eddies while increasing the effective ventilation area; it uses a lateral support in conjunction with a pressure rod to press the filter element onto the inner baffle, preventing the filter element from falling off under high airflow; and it uses a pressure rod in conjunction with a shaping plate to maintain the shape of the filter element's pleats, preventing deformation of the pleats under high airflow, which would lead to fluctuations in filtration efficiency and damage to the filter element. Attached Figure Description

[0016] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an exploded view of the overall structure of this utility model;

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Fixed frame; 11. Side panel; 12. Inner baffle; 13. Outer baffle;

[0023] 2. Filter element; 21. Edge sealing; 22. Filter cloth;

[0024] 3. Compression bar; 31. Shaping bar; 32. Backing rib;

[0025] 4. Lateral support; 41. Shaping plate; 42. Positioning groove; 43. First support strip; 44. First slot; 45. First fixing piece;

[0026] 5. Longitudinal support; 51. Second support bar; 52. Second slot; 53. Second fixing piece. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1:

[0029] Please see Figure 1-5 The present invention will describe the above technical solution in detail through the following embodiments:

[0030] A high-efficiency airflow filter, comprising:

[0031] A fixed frame 1 is provided, and a filter element 2 is provided inside the fixed frame 1. A pressure rod 3 is vertically provided on the inner side of the windward side of the filter element 2. A horizontal support 4 is provided on the back of the fixed frame 1. The horizontal support 4 includes a first support bar 43 and several shaping plates 41. The shaping plates 41 are inserted into the filter element 2 and press against the pressure rod 3. Several longitudinal supports 5 are provided on the back of the fixed frame 1 and behind the horizontal support 4. The longitudinal supports 5 press against the first support bar 43.

[0032] The filter element 2 includes a V-shaped folded filter cloth 22, and the filter cloth 22 is wrapped with a sealing edge 21. The sealing edge 21 is bonded to the fixing frame 1 with hot melt adhesive or other adhesives.

[0033] The pressure rod 3 is inserted vertically from behind the filter element 2 into the inner side of the pleats of the filter cloth 22, located at the tip of the pleats, to ensure the shape of the tip of the pleats.

[0034] The fixed frame 1 includes a side plate 11, an inner baffle 12 is provided on the inner front side of the side plate 11, and an outer baffle 13 is provided on the outer rear side of the side plate 11. The pressure rod 3 presses the filter element 2 into the inner side of the inner baffle 12.

[0035] The side plate 11, inner baffle 12 and outer baffle 13 are made by bending a whole piece of metal plate, and the four side plates 11 are welded to form a square fixing frame 1.

[0036] The pressure rod 3 presses the filter element 2 against the inner side of the inner baffle 12. Together with the lateral support 4, it can improve the pressure resistance of the filter element 2 and prevent the edge of the filter element 2 from separating from the fixed frame 1 under high air volume.

[0037] The pressure bar 3 includes a cylindrical shaping bar 31, and the back of the shaping bar 31 is provided with a back rib 32 in the axial direction.

[0038] The front of the shaping rod 31 is round, which can fit the wrinkles of the filter cloth 22 well. The back rib 32 can improve the bending resistance of the shaping rod 31, thereby improving the pressure resistance of the filter element 2.

[0039] The shaping plate 41 is triangular, and its shape and size are adapted to the pleated shape of the filter element 2.

[0040] The shaping plate 41 is used to ensure the shape of the pleated part of the filter cloth 22 and prevent the side of the pleated part from sinking into the leeward side.

[0041] The front end of the shaping plate 41 is provided with a positioning groove 42, which is adapted to the shape of the pressure rod 3.

[0042] The positioning groove 42 is compatible with the pressure rod 3, and together with the back rib 32, it can prevent the pressure rod 3 from shifting left and right or rotating on its own.

[0043] The first support bar 43 is fixedly connected to the outer baffle 13 at both ends by the first fixing piece 45. The rear side of the middle part of the first support bar 43 is provided with a number of first slots 44. The first slots 44 are engaged with the longitudinal support 5 to restrict the left and right movement of the longitudinal support 5.

[0044] The first fixing piece 45, the first support strip 43, and the shaping plate 41 are integrally formed and can be made of plastic material, or the inside can be made of metal material and the outside can be wrapped with plastic.

[0045] The first fixing piece 45 is fixedly connected to the outer baffle 13 by bolts or rivets.

[0046] The longitudinal support 5 includes a second support bar 51. Both ends of the second support bar 51 are fixedly connected to the outer baffle 13 through the second fixing piece 53. A second slot 52 is provided on the front side of the middle part of the second support bar 51. The second slot 52 is inserted into the first slot 44 and engages with the first support bar 43 to restrict the up and down movement of the first support bar 43.

[0047] The second support bar 51 and the second fixing plate 53 are made of the same material as the transverse support 4. The second fixing plate 53 is fixedly connected to the outer baffle 13 by bolts or rivets.

[0048] After the second slot 52 and the first slot 44 engage, the first support strip 43 and the second support strip 51 can mutually restrict each other, preventing lateral and longitudinal displacement, and also preventing lateral and longitudinal deformation of the first support strip 43 and the second support strip 51. At the same time, the second support strip 51 is used to improve the horizontal bending resistance of the first support strip 43, further improving the strength of the filter element 2.

[0049] Working principle:

[0050] Insert the filter element 2 into the inside of the fixing frame 1, and use adhesive to bond the sealing edge 21 to the side plate 11 and the inner baffle 12.

[0051] Insert the pressure rod 3 into the filter cloth 22 from the leeward side, so that the arc surface of the shaping rod 31 abuts against the inner side of the tip of the fold of the filter cloth 22.

[0052] Insert the shaping plate 41 into the folds of the filter cloth 22 so that the positioning groove 42 engages with the shaping rod 31, ensuring that the back rib 32 is engaged in the positioning groove 42.

[0053] Select the appropriate number and location of the lateral supports based on the maximum designed ventilation volume.

[0054] After insertion, the first fixing piece 45 is fixed to the outer baffle 13 using bolts or rivets.

[0055] Then place the second support bar 51 on the back of the first support bar 43 to ensure that the second slot 52 is engaged with the first slot 44, and then use bolts or rivets to fix the second fixing piece 53 to the outer baffle 13.

[0056] When a large volume of air passes through, the air pressure is transmitted to the pressure bar 3, then to the shaping plate 41 and the first support bar 43, and finally to the fixed frame 1. At the same time, the pressure on the first support bar 43 is transmitted to the second support bar 51.

[0057] The pressure bar 3, the transverse support 4, and the longitudinal support 5 work together to ensure that the filter element 2 does not undergo large deformation, thus ensuring the filtration effect.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency filter with large air volume, characterized in that, include: A fixed frame (1) is provided inside the fixed frame (1), and a filter element (2) is provided inside the fixed frame (1). A pressure rod (3) is vertically provided on the inner side of the windward side of the filter element (2). A horizontal support (4) is provided on the back of the fixed frame (1). The horizontal support (4) includes a first support bar (43) and several shaping plates (41). The shaping plates (41) are inserted into the filter element (2) and press against the pressure rod (3). Several longitudinal supports (5) are provided on the back of the fixed frame (1) and behind the horizontal support (4). The longitudinal supports (5) press against the first support bar (43).

2. The high-efficiency filter with large air volume as described in claim 1, characterized in that: The fixed frame (1) includes a side plate (11), an inner baffle (12) is provided on the inner side of the front part of the side plate (11), and an outer baffle (13) is provided on the outer side of the rear part of the side plate (11). The pressure rod (3) presses the filter element (2) inside the inner baffle (12).

3. The high-efficiency filter with large air volume as described in claim 1, characterized in that: The pressure bar (3) includes a cylindrical shaping bar (31), and the shaping bar (31) has a back rib (32) axially arranged on its back side.

4. The high-efficiency filter with large air volume as described in claim 1, characterized in that: The shaping plate (41) is triangular, and its shape and size are adapted to the pleated shape of the filter element (2).

5. A high-efficiency filter with large air volume as described in claim 4, characterized in that: The front end of the shaping plate (41) is provided with a positioning groove (42), and the positioning groove (42) is adapted to the shape of the pressure rod (3).

6. A high-efficiency filter with large air volume as described in claim 1, characterized in that: The first support bar (43) is fixedly connected to the outer baffle (13) at both ends by the first fixing piece (45). The first support bar (43) has several first slots (44) on the rear side of the middle part. The first slots (44) are engaged with the longitudinal support (5) to restrict the left and right movement of the longitudinal support (5).

7. A high-efficiency filter with large air volume as described in claim 6, characterized in that: The longitudinal support (5) includes a second support bar (51). The two ends of the second support bar (51) are fixedly connected to the outer baffle (13) through the second fixing piece (53). The front side of the middle part of the second support bar (51) is provided with a second slot (52). The second slot (52) is inserted into the first slot (44) and engaged with the first support bar (43) to restrict the up and down movement of the first support bar (43).

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