Fan filter unit (FFU) box structure

Abstract

The utility model discloses a fan filter unit (FFU) box body structure, which relates to the technical field of FFUs and comprises a box body, a bottom plate is arranged at the lower end of the box body, the box body is fixedly connected with the bottom plate through screws, a filter plate is arranged between the box body and the bottom plate, an upper limit ring is fixedly connected at the lower end of the inner side of the box body, and a lower limit ring is fixedly connected at the lower end of the inner side of the box body. An upper limiting ring is fixedly connected to the upper end of the bottom plate, a lower limiting ring is fixedly connected to the upper end of the bottom plate, the filter plate is located between the upper limiting ring and the lower limiting ring, sealing rings are fixedly connected between the upper limiting ring and the lower limiting ring, the sealing rings are located at the upper end and the lower end of the filter plate, and a locking mechanism is fixedly connected to the edge of the upper end of the lower limiting ring. The locking mechanism abuts against the side wall of the filter plate. The FFU is of a fan box structure. By arranging the locking mechanism and the guide mechanism, the filter plate is fixed to the lower limiting ring through the abutting rods, the bottom plate is hung on the box body through the guide rods, the filter plate can be conveniently and rapidly mounted and dismounted when replaced, and the efficiency of replacing the filter plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of FFU fans, in particular to a box structure of an FFU fan. Background Art

[0002] The FFU fan is fixed on the ceiling of the factory building, and filters impurities in the indoor air through a negative pressure system to achieve the effect of internal circulation filtration. The main core of its filtration is through the filter plate inside. After the filter plate is used for a period of time, it needs to be maintained and replaced. There are currently two replacement methods. One is to replace it manually in the sandwich layer, and the other is to directly replace it at the lower end of the FFU fan.

[0003] However, both replacement methods require the FFU fan to be disassembled. Placing the parts on one side not only takes up space, but also requires one or two people to operate simultaneously during installation and disassembly, consuming manual effort and having low installation and disassembly efficiency. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a box structure of an FFU fan, which solves the problems raised in the above background art.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A box structure of an FFU fan, including a box body, a bottom plate is arranged at the lower end of the box body, the box body and the bottom plate are fixedly connected by screws, a filter plate is arranged between the box body and the bottom plate, an upper limit ring is fixedly connected to the lower end inside the box body, a lower limit ring is fixedly connected to the upper end of the bottom plate, the filter plate is arranged between the upper limit ring and the lower limit ring, sealing rings are fixedly connected between the upper limit ring and the lower limit ring, the sealing rings are arranged at the upper and lower ends of the filter plate, a locking mechanism is fixedly connected to the upper end edge of the lower limit ring, the locking mechanism abuts against the side wall of the filter plate, and a connection guiding mechanism is arranged between the box body and the bottom plate.

[0006] Further, the locking mechanism includes: a fixing plate, a threaded fixing knob is rotatably connected to the outer side end of the fixing plate, a moving plate is threadedly connected to the threaded fixing knob, a resisting rod is fixedly connected to the inner side of the moving plate, the resisting rod slides through the fixing plate and abuts against the outer side wall of the filter plate.

[0007] Further, the guiding mechanism includes: a guide rod, the guide rod is fixed to the upper end of the edge of the bottom plate, a clamping groove is formed in the edge of the box body, the guide rod is slidably connected to the clamping groove, a limiting plate is threadedly connected to the end of the guide rod, and a guiding buckle is fixedly connected to the side wall of the box body, and the guide rod is slidably arranged with the guiding buckle.

[0008] Further, convex strips are fixedly connected to both sides of the upper end of the long side of the lower limit ring, and the inner end face of the convex strip is flush with the inner end face of the lower limit ring.

[0009] Further, a guide block is fixedly connected to the inner end of the box body, and the guide block is slidably abutted against the side surface of the lower limit ring.

[0010] Further, a reinforcing rib is fixedly connected to the upper inner end of the box body, and the reinforcing rib is fixedly arranged between the upper limit ring and the box body.

[0011] Compared with the above background technology, the FFU fan box structure provided by the present application includes an FFU fan with very mature technology nowadays, and a locking mechanism and a guiding mechanism as the core components. Its principle relies on the fact that the filter plate between the bottom plate and the box body can be stably fixed by the abutting rod, and the installation efficiency and disassembly efficiency can be improved under the suspension action of the guide rod.

[0012] The utility model provides an FFU fan box structure. Compared with the prior art, it has the following beneficial effects:

[0013] For this FFU fan box structure, by setting the locking mechanism and the guiding mechanism, the filter plate is fixed on the lower limit ring by the abutting rod, and the bottom plate is suspended on the box body by the guide rod, so that the installation and disassembly can be carried out conveniently and quickly when replacing the filter plate, and the efficiency of replacing the filter plate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the whole of the utility model;

[0015] Figure 2 is a schematic structural diagram of the box body and the bottom plate of the utility model unfolded;

[0016] Figure 3 is a schematic structural diagram of a partial section of the box body and the bottom plate of the utility model;

[0017] Figure 4 is Figure 2 an enlarged structural diagram of part A in

[0018] Figure 5 is Figure 2 an enlarged structural diagram of part B in

[0019] Figure 6 is Figure 3 an enlarged structural diagram of part C in

[0020] In the figure: 1. Box body; 2. Bottom plate; 3. Upper limit ring; 4. Filter plate; 5. Sealing ring; 6. Reinforcing rib; 7. Lower limit ring; 8. Guide block; 9. Fixed plate; 10. Threaded fixing button; 11. Moving plate; 12. Bracing rod; 13. Ridge; 14. Card slot; 15. Guide rod; 16. Limit plate; 17. Guide buckle. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-6 , the present invention provides a technical solution: an FFU fan box body structure, including a box body 1, a bottom plate 2 is arranged at the lower end of the box body 1, the box body 1 and the bottom plate 2 are fixedly connected by screws, a filter plate 4 is arranged between the box body 1 and the bottom plate 2, an upper limit ring 3 is fixedly connected to the inner lower end of the box body 1, a lower limit ring 7 is fixedly connected to the upper end of the bottom plate 2, the filter plate 4 is arranged between the upper limit ring 3 and the lower limit ring 7, sealing rings 5 are fixedly connected between the upper limit ring 3 and the lower limit ring 7, the sealing rings 5 are arranged at the upper and lower ends of the filter plate 4, a locking mechanism is fixedly connected to the upper end edge of the lower limit ring 7, the locking mechanism abuts against the side wall of the filter plate 4, and a connection guiding mechanism is arranged between the box body 1 and the bottom plate 2; The box body 1 of the FFU fan is installed on the ceiling, a bottom plate 2 is fixed by screws at the lower end of the box body 1, a filter plate 4 is placed in the box body 1, and then the bottom plate 2 fixes the filter plate 4 in the box body 1. When replacing the filter plate 4 inside the box body 1, remove the screws, pull the bottom plate 2 downward, and through the limitation of the connection guiding mechanism, the bottom plate 2 and the box body 1 will not be separated. Then, horizontally pass the filter plate 4 into the lower limit ring 7 at the upper end of the bottom plate 2, and then fix the position of the filter plate 4 through the locking mechanism. Push the bottom plate 2 upward and then fix the screws to complete the installation. At the same time, the filter plate 4 fixed by the locking mechanism will be separated from the box body 1 as the bottom plate 2 moves during replacement and disassembly, which is convenient for the disassembly and installation of the filter plate 4.

[0023] Such as Figure 4As shown in the figure, the locking mechanism includes: a fixing plate 9, a threaded fixing knob 10 is rotatably connected to the outer end of the fixing plate 9, a moving plate 11 is threadedly connected to the threaded fixing knob 10, a resisting rod 12 is fixedly connected to the inner side of the moving plate 11, the resisting rod 12 slidably passes through the fixing plate 9 and abuts against the outer side wall of the filter plate 4; when the filter plate 4 is placed in the lower limit ring 7, rotate the threaded fixing knob 10, the moving plate 11 is threadedly connected to the threaded fixing knob 10, and under the limiting and sliding action of the resisting rod 12, it can drive the resisting rod 12 to move back and forth, and then abut against the side wall of the filter plate 4 through the resisting rod 12, thereby fixing the filter plate 4 in the lower limit ring 7.

[0024] As Figure 5 shown in the figure, the guiding mechanism includes: a guide rod 15, the guide rod 15 is fixed to the upper edge of the bottom plate 2, a slot 14 is formed in the edge of the box body 1, the guide rod 15 is slidably connected to the slot 14, a limiting plate 16 is threadedly connected to the end of the guide rod 15, a guiding buckle 17 is fixedly connected to the side wall of the box body 1, and the guide rod 15 is slidably arranged with the guiding buckle 17. When the bottom plate 2 and the box body 1 are separated up and down, the bottom plate 2 can be prevented from detaching through the limitation of the guide rod 15. The bottom plate 2 is suspended at the lower end of the box body 1 through the guide rod 15, which is convenient to immediately install the bottom plate 2 after the filter plate 4 is installed, improving the installation efficiency; when maintenance and repair are required, after the limiting plate 16 is screwed off, the guide rod 15 can be removed through the slot 14, which is convenient for later maintenance.

[0025] As Figure 6 shown in the figure, two sides of the upper end of the long side of the lower limit ring 7 are fixedly connected with convex strips 13, and the inner end face of the convex strips 13 is flush with the inner end face of the lower limit ring 7; when the filter plate 4 is placed into the lower limit ring 7, the convex strips 13 on both sides of the long side can facilitate the stable sliding of the filter plate 4, and the filter plate 4 can move forward stably without installation deviation, improving the installation efficiency.

[0026] As Figure 6 shown in the figure, a guiding block 8 is fixedly connected to the inner end of the box body 1, and the guiding block 8 is slidably abutted against the side surface of the lower limit ring 7; the lower end of the guiding block 8 is inclined. When the bottom plate 2 moves upward, through the contact between the lower limit ring 7 and the inclined surface of the guiding block 8, the guide rod 15 can be prevented from being skewed, thereby improving the installation efficiency. At the same time, the stability and strength of the side wall of the box body 1 can be enhanced through the guiding block 8.

[0027] As Figure 6 shown in the figure, a reinforcing rib 6 is fixedly connected to the upper inner side of the box body 1, and the reinforcing rib 6 is fixedly arranged between the upper limit ring 3 and the box body 1; the reinforcing rib 6 can improve the strength inside the box body 1 and the appearance stability of the box body 1 during transportation.

[0028] The above are only the preferred embodiments of the present utility model and do not impose any formal limitations on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present utility model by using the above-disclosed technical content. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An FFU fan box structure, including a box body (1), a bottom plate (2) is arranged at the lower end of the box body (1), the box body (1) and the bottom plate (2) are fixedly connected by screws, and a filter plate (4) is arranged between the box body (1) and the bottom plate (2), characterized in that, A upper limit ring (3) is fixedly connected to the lower end inside the box body (1), a lower limit ring (7) is fixedly connected to the upper end of the bottom plate (2), a filter plate (4) is arranged between the upper limit ring (3) and the lower limit ring (7), sealing rings (5) are fixedly connected between the upper limit ring (3) and the lower limit ring (7), the sealing rings (5) are arranged at the upper and lower ends of the filter plate (4), a locking mechanism is fixedly connected to the upper end edge of the lower limit ring (7), the locking mechanism abuts against the side wall of the filter plate (4), and a connection guiding mechanism is arranged between the box body (1) and the bottom plate (2).

2. The FFU fan box structure according to claim 1, wherein, The locking mechanism includes: A fixing plate (9), a threaded fixing knob (10) is rotatably connected to the outer end of the fixing plate (9), a moving plate (11) is threadedly connected to the threaded fixing knob (10), a resisting rod (12) is fixedly connected to the inner side of the moving plate (11), the resisting rod (12) slides through the fixing plate (9) and abuts against the outer side wall of the filter plate (4).

3. The FFU fan housing structure according to claim 2, characterized in that, The guiding mechanism includes: A guide rod (15), the guide rod (15) is fixed to the upper end of the edge of the bottom plate (2), a clamping groove (14) is formed in the edge of the box body (1), the guide rod (15) is slidably connected to the clamping groove (14), a limiting plate (16) is threadedly connected to the end of the guide rod (15), a guiding buckle (17) is fixedly connected to the side wall of the box body (1), and the guide rod (15) is slidably arranged with the guiding buckle (17).

4. The FFU fan box structure according to claim 2, wherein, Two convex strips (13) are fixedly connected to both sides of the upper end of the long side of the lower limit ring (7), and the inner end face of the convex strip (13) is flush with the inner end face of the lower limit ring (7).

5. The FFU fan housing structure according to claim 2, characterized in that, A guiding block (8) is fixedly connected to the inner end of the box body (1), and the guiding block (8) slidably abuts against the side face of the lower limit ring (7).

6. The FFU fan box structure according to claim 2, characterized in that, A reinforcing rib (6) is fixedly connected to the upper end inside the box body (1), and the reinforcing rib (6) is fixedly arranged between the upper limit ring (3) and the box body (1).

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