A new bag filter

Abstract

The utility model discloses a novel bag filter belongs to filter technical field, solves the problem of insufficient structure strength of existing bag filter support frame, inconvenient assembly. It includes outer frame and a plurality of inner frames, and the outer side of each inner frame is covered with filter bag to form filter unit, and the top between two adjacent filter units is equipped with press strip, and the top of each inner frame is equipped with the upper flanging of first bending to the inside, and then bending down, the press strip includes baffle, riser and hook plate, both ends of baffle are connected with a riser, and the end of each riser away from baffle is connected with a hook plate, the baffle covers between the upper flanging of corresponding two inner frames, and the riser is attached to the outside wall of upper flanging, and the hook plate is attached to the bottom surface of upper flanging. The bag filter of the utility model can effectively improve the connection reliability between two adjacent support frames, and improve assembly efficiency.

Description

Technical Field

[0001] This utility model relates to filters, and more specifically, to a novel bag filter. Background Technology

[0002] Bag filters are a type of multi-purpose filtration equipment with novel structure, small size, simple and flexible operation, energy saving, high efficiency, closed operation, and strong applicability. They belong to a new type of filtration system and are widely used in central air conditioning ventilation systems, pharmaceutical, hospital, electronics, food and other industrial purification. They can also be used as a front-end filter for high-efficiency air filters to reduce the load on high-efficiency air filters and extend their service life.

[0003] Existing bag filters, such as the patent application number 202323266558.8, disclose a bag filter frame, relating to the field of industrial air filter technology. It includes a bag filter frame. The bag filter frame of this application includes an outer frame, the upper and lower surfaces of which are set as flanges. Multiple support frames are arranged between the upper and lower flanges of the outer frame. A filter bag is fixedly connected to the outside of each support frame. A pressure strip is snapped between two adjacent support frames, and the two sides of the pressure strip are respectively clamped to the sides of the two adjacent support frames. The outer frame is formed by integral bending, which is convenient to operate and allows workers to efficiently assemble the bag filter. The use of a locking block and groove at the joint of the outer frame enables rapid assembly while ensuring a more secure connection.

[0004] In the existing bag filter frames, adjacent support frames are covered by a pressure strip, and the two sides of the pressure strip are clamped to the sides of the two adjacent support frames. Since the support frames in bag filters are mostly made of thin aluminum, their structural strength is relatively low. The pressure strip relies solely on the clamping contact between its two sides and the sides of the support frame, making it difficult to transfer the force of the support frame to the pressure strip. During long-term use, the filter bag will be constantly pulled by the airflow impact, causing it to deform. Furthermore, the support frame is only a rectangular frame, which makes it difficult for workers to pick up the frame and insert it into the filter bag opening during assembly, resulting in low assembly efficiency.

[0005] Therefore, there is an urgent need to design a new type of bag filter to solve the above-mentioned technical problems. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art. Its purpose is to provide a new type of bag filter that can effectively improve the connection reliability between two adjacent support frames and improve assembly efficiency.

[0007] The technical solution of this utility model is as follows: A novel bag filter includes an outer frame and multiple inner frames. Each inner frame is covered with a filter bag to form a filter unit. The multiple filter units are arranged side by side in the outer frame. A pressure strip is provided at the top between two adjacent filter units. Both ends of the pressure strip are inserted into the outer frame. The two adjacent filter units and each filter unit is connected to the outer frame by riveting. The top of each inner frame is provided with an upward flange that bends inward and then downward. The pressure strip includes a baffle plate, a vertical plate, and a hook plate. A vertical plate is connected to both ends of the baffle plate. A hook plate is connected to the end of each vertical plate away from the baffle plate. The baffle plate covers the area between the corresponding upward flanges of two adjacent inner frames. The vertical plate is attached to the outer wall of the upward flange, and the hook plate is attached to the bottom surface of the upward flange.

[0008] As a further improvement, each of the inner frames has a folded edge at the bottom that bends inward and then upward.

[0009] Furthermore, the inner frame, upper flange, and lower flange are integrally formed metal frames.

[0010] Furthermore, the aforementioned shield, upright plate, and hook plate are integrally formed metal strips.

[0011] Furthermore, the outer wall of each inner frame is provided with anti-slip texture.

[0012] Furthermore, each of the filter bags has at least one downwardly extending indentation at the center of the end away from the inner frame, the indentation connecting the two inner wall surfaces of the filter bag.

[0013] Furthermore, the outer frame includes four outer borders, which are connected end to end to form a rectangular frame, and adjacent outer borders are fixedly connected by corner brackets.

[0014] Furthermore, each of the outer frame frames has an inner slot on its inner side and an outer slot on its outer side, and the width of the inner slot is greater than the width of the outer slot.

[0015] Furthermore, the corner bracket is a right-angle plate, with its two sides inserted into the corresponding outer slots of two adjacent outer frames, and the two sides of the right-angle plate are connected to the outer frame by riveting. The upper and lower sides of the outer slot are provided with fasteners.

[0016] Furthermore, the corner bracket is a right-angle plate, with its two sides inserted into the outer slots corresponding to two adjacent outer frames. The inner sides of the right-angle plate are provided with grooves or protrusions, and the bottom of the outer slots corresponding to two adjacent outer frames are provided with protrusions or grooves. The protrusions are engaged in the grooves, and the upper and lower sides of the outer slots are provided with fasteners.

[0017] Beneficial effects

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] This utility model of a bag filter, by setting an upturned edge on the inner frame and a hook plate that cooperates with the pressure strip, allows the force on the inner frame to be transferred to the pressure strip by using the hook plate to hold the inner frame, thereby increasing the stress strength of the inner frame and effectively improving the connection reliability between two adjacent inner frames; in addition, the upturned edge structure on the inner frame makes it convenient for workers to handle and assemble, effectively improving assembly efficiency, and at the same time, the upturned edge structure also makes it easier for the inner frame to be inserted into the bag opening of the filter bag. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0022] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0024] Figure 5 This is an enlarged cross-sectional view of the outer frame structure in this utility model;

[0025] Figure 6 This is an enlarged schematic diagram of the cross-sectional structure of the pressure strip in this utility model;

[0026] Figure 7 This is an enlarged three-dimensional structural diagram of the corner bracket in this utility model;

[0027] Figure 8 This is an enlarged schematic diagram of the cross-sectional structure of the inner frame in this utility model.

[0028] Among them: 1-outer frame, 2-inner frame, 3-filter bag, 4-pressure strip, 5-upper flange, 6-lower flange, 7-indentation, 11-outer frame, 12-corner code, 13-inner slot, 14-outer slot, 15-fastener strip, 16-groove, 17-protrusion, 41-covering plate, 42-standing plate, 43-hook plate. Detailed Implementation

[0029] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0030] See Figure 1-8 This utility model discloses a novel bag filter, comprising an outer frame 1 and multiple inner frames 2. Each inner frame 2 is covered with a filter bag 3 to form a filter unit. Multiple filter units are arranged side-by-side within the outer frame 1. A pressure strip 4 is provided at the top between adjacent filter units to strengthen the inner frame 2. Both ends of the pressure strip 4 are inserted into the outer frame 1, ensuring that both ends of the pressure strip 4 are also supported within the outer frame 1, resulting in better structural strength and stability. Adjacent filter units and each filter unit is connected to the outer frame 1 by riveting, securing the filter bag 3 and the inner frame 2. Using two independent inner frames 2 to clamp the filter bag 3 and securing it with rivets or screws further improves the fixing effect of the filter bag 3. Each inner frame 2 has an upward-curved edge 5 at its top, which bends inwards and then downwards. The connection between the upward-curved edge 5 and the inner frame 2 is an arc-shaped transition, facilitating the hooking of the upward-curved edge 5 by the operator. This improves assembly efficiency. The pressure strip 4 includes a baffle plate 41, a vertical plate 42, and a hook plate 43. Each end of the baffle plate 41 is connected to a vertical plate 42, and the end of each vertical plate 42 away from the baffle plate 41 is connected to a hook plate 43. The baffle plate 41 covers the upper flanges 5 of two adjacent inner frames 2, and the vertical plate 42 is attached to the outer wall of the upper flange 5. The hook plate 43 is attached to the bottom surface of the upper flange 5, so that the pressure strip 4 covers the upper flange 5 and the inner frame 2 cannot be detached from the pressure strip 4.

[0031] The bag filter of this utility model has an upper flange 5 on the inner frame 2 that cooperates with the hook plate 43 of the pressure strip 4. The hook plate 43 hooks the inner frame 2, which allows the force of the inner frame 2 to be transferred to the pressure strip 4, increasing the stress strength of the inner frame 2 and effectively improving the connection reliability between two adjacent inner frames 2. In addition, the upper flange 5 structure on the inner frame 2 makes it convenient for workers to handle and assemble, effectively improving assembly efficiency. At the same time, the structure of the upper flange 5 also makes it easier for the inner frame 2 to be inserted into the bag opening of the filter bag.

[0032] Preferably, each inner frame 2 has a bottom flange 6 that bends inward and then upward. The flange 6 makes the inner frame 2 have flanges on both the top and bottom sides, making it easier to pick up. It also eliminates the need for staff to identify which side to insert into the filter bag 3, further facilitating assembly. In addition, the flange structure can further improve the structural strength of the inner frame 2.

[0033] Preferably, the inner frame 2, the upper flange 5, and the lower flange 6 are integrally formed metal frames, which can be formed by bending, making them easy to manufacture and providing better structural strength. Furthermore, the baffle plate 41, the upright plate 42, and the hook plate 43 are integrally formed metal strips, which can also be formed by bending, making them easy to manufacture and providing better structural strength.

[0034] Preferably, the outer wall of each inner frame 2 is provided with anti-slip texture to increase the friction between the filter bag 3 and the inner frame 2, and further improve the fixing effect of the filter bag 3.

[0035] Preferably, each filter bag 3 has at least one downwardly extending indentation 7 at the middle of the end away from the inner frame 2. The indentation 7 can be obtained by hot-melt extrusion or by needle and thread sewing. The indentation 7 connects the two inner wall surfaces of the filter bag 3 to avoid the problem of excessive expansion of the filter bag 3.

[0036] Preferably, the outer frame 1 includes four outer frame pieces 11, which are connected end to end to form a rectangular frame. Adjacent outer frame pieces 11 are fixedly connected by corner brackets 12 to achieve the fixed formation of the outer frame 1. Each outer frame piece 11 has an inner slot 13 on its inner side. The outer edge of the inner frame 2 is inserted into the inner slot 13 to support the inner frame 2. Both ends of the pressure strip 4 are also inserted into the inner slot 13 to press the pressure strip 4 and prevent it from loosening. Each outer frame piece 11 has an outer slot 14 on its outer side, which allows the operator's hand to be inserted for easy gripping and assembly. The width of the inner slot 13 is greater than the width of the outer slot 14. Using a larger inner slot 13 to accommodate the inner frame 2 can further improve the installation stability of the inner frame 2.

[0037] Preferably, the corner bracket 12 is a right-angle plate. Both sides of the right-angle plate are inserted into the corresponding outer slots 14 of two adjacent outer frame 11. The inner sides of both sides of the right-angle plate are provided with grooves 16 or protrusions 17. The bottom of the corresponding outer slots 14 of two adjacent outer frame 11 are also provided with protrusions 17 or grooves 16. It should be noted that the grooves 16 and protrusions 17 are used in conjunction; the protrusion 17 is engaged in the groove 16. The upper and lower sides of the outer slots 14 are provided with fastening strips 15, which limit the positioning of the corner bracket 12. In this embodiment, the outer wall surface of the protrusion 17 and the groove surface of the groove 16 are both arc-shaped surfaces, facilitating the corner bracket 12 to pass over the protrusion 17 and engage in the groove 16. Furthermore, the end of the groove 16 away from the right angle of the corner bracket 12 is flat, and the end of the protrusion 17 away from the outer frame 11 is also flat, ensuring that the protrusion 17 will not automatically loosen after being engaged in the slot 16, further improving the connection reliability of the outer frame 1. In this embodiment, the corner bracket 12 is fixed by the cooperation of the protrusion 17 and the groove 16 to realize the assembly and fixation of the outer frame 1, which makes the assembly more convenient and further improves its assembly efficiency.

[0038] In other embodiments, the corner bracket 12 is a right-angle plate, with its two sides inserted into the corresponding outer slots 14 of two adjacent outer frame 11. The two sides of the right-angle plate are connected to the outer frame 11 by riveting. Fasteners 15 are provided on both the upper and lower sides of the outer slots 14 to limit the position of the corner bracket 12. In this embodiment, the corner bracket 12 is fixed with screws or rivets to achieve the assembly and fixation of the outer frame 1, which can further improve the connection reliability of the outer frame 2.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A novel bag filter, comprising an outer frame (1) and a plurality of inner frames (2), wherein each inner frame (2) is covered with a filter bag (3) to form a filter unit, the plurality of filter units are arranged side by side within the outer frame (1), and a pressure strip (4) is provided at the top between two adjacent filter units, both ends of the pressure strip (4) being inserted into the outer frame (1), characterized in that, The two adjacent filter units and each filter unit is connected to the outer frame (1) by riveting. The top of each inner frame (2) is provided with an upper flange (5) that bends inward and then downward. The pressure strip (4) includes a baffle plate (41), a vertical plate (42) and a hook plate (43). Both ends of the baffle plate (41) are connected to a vertical plate (42). The end of each vertical plate (42) away from the baffle plate (41) is connected to a hook plate (43). The baffle plate (41) covers the upper flanges (5) of the two adjacent inner frames (2), and the vertical plate (42) is attached to the outer side wall of the upper flange (5). The hook plate (43) is attached to the bottom surface of the upper flange (5).

2. The novel bag filter according to claim 1, characterized in that, Each inner frame (2) has a folded edge (6) at its bottom that bends inward and then upward.

3. A novel bag filter according to claim 2, characterized in that, The inner frame (2), upper flange (5), and lower flange (6) are integrally formed metal frames.

4. A novel bag filter according to claim 1, characterized in that, The shield (41), upright plate (42), and hook plate (43) are integrally formed metal strips.

5. A novel bag filter according to claim 1, characterized in that, Each inner frame (2) has anti-slip texture on its outer wall.

6. A novel bag filter according to claim 1, characterized in that, Each filter bag (3) has at least one downwardly extending indentation (7) at the middle of one end away from the inner frame (2), the indentation (7) connecting the two inner wall surfaces of the filter bag (3).

7. A novel bag filter according to any one of claims 1-6, characterized in that, The outer frame (1) includes four outer frame pieces (11), which are connected end to end to form a rectangular frame, and adjacent outer frame pieces (11) are fixedly connected by corner brackets (12).

8. A novel bag filter according to claim 7, characterized in that, Each of the outer frame (11) has an inner slot (13) on its inner side and an outer slot (14) on its outer side. The width of the inner slot (13) is greater than the width of the outer slot (14).

9. A novel bag filter according to claim 8, characterized in that, The corner bracket (12) is a right-angle plate. The two sides of the right-angle plate are respectively inserted into the outer slots (14) corresponding to the two adjacent outer frames (11). The two sides of the right-angle plate are connected to the outer frame (11) by riveting. The upper and lower sides of the outer slot (14) are provided with buckle strips (15).

10. A novel bag filter according to claim 8, characterized in that, The corner bracket (12) is a right-angle plate. The two sides of the right-angle plate are respectively inserted into the outer slots (14) corresponding to the two adjacent outer frames (11). The inner sides of the two sides of the right-angle plate are provided with grooves (16) or protrusions (17). The bottom of the outer slots (14) corresponding to the two adjacent outer frames (11) are provided with protrusions (17) or grooves (16). The protrusions (17) are engaged in the grooves (16). The upper and lower sides of the outer slots (14) are provided with fasteners (15).

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