Quick filter screen replacing device for FFU (fan filter unit)

Abstract

The utility model discloses a quick filter screen replacing device for an FFU (fan filter unit), and relates to the technical field of air filtration. The fan comprises a fan body, a fixing frame is detachably mounted on the outer side of the fan body, a shell is detachably arranged in the fixing frame, a filter is fixedly mounted in the shell, and mounting holes are symmetrically formed in the two sides of the shell. Fixing rods which are symmetrically distributed movably penetrate through the two sides of the fixing frame, a movable plate is fixedly installed at the ends, away from the fixing frame, of the fixing rods, the movable plate and the fixing frame are fixedly connected through two first springs, and supports are fixedly installed on the two sides of the fan body; according to the device, the shell and the filter can be quickly disassembled and assembled, the filter replacement efficiency is improved, the time of workers is saved, meanwhile, the stability of the moving plate and the fixing rod can be improved through the second spring, and the filter is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of air filtration, in particular to a FFU fan filter unit quick filter replacement device. Background Art

[0002] The Fan Filter Unit (FFU) is a self-powered, modular terminal air supply device with filtering capabilities. It consists of a high-efficiency filter (HEPA) or ultra-high-efficiency filter (ULPA), a micro fan, and a housing. It is primarily used in cleanrooms, clean benches, clean production lines, and other environments requiring localized purification. The FFU works by drawing air in through a built-in fan, filtering out particulate matter through a HEPA or ULPA filter, and then evenly discharging the clean air from the outlet to maintain a clean environment.

[0003] The filter in the conventional filter unit is troublesome to install, and usually multiple fixing screws are required to fix the filter, making it impossible to quickly replace the filter. Utility Model Content

[0004] In order to solve the problem that filters are troublesome to install, the purpose of the utility model is to provide a device for quickly replacing filters of an FFU fan filter unit.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: an FFU fan filter unit quick-replacement filter device, comprising a fan body, a fixing frame detachably installed on the outside of the fan body, a shell detachably provided inside the fixing frame, a filter fixedly installed inside the shell, symmetrically distributed mounting holes are provided on both sides of the shell, symmetrically distributed fixing rods are movably penetrated on both sides of the fixing frame, a movable plate is fixedly installed on the end of the fixing rod away from the fixing frame, the movable plate and the fixed frame are fixedly connected by two first springs, brackets are fixedly installed on both sides of the fan body, and symmetrically distributed stabilizing rods are fixedly installed on the side of the movable plate close to the bracket, the stabilizing rods penetrate the bracket, and the bracket and the movable plate are fixedly connected by two second springs.

[0006] Preferably, a rotating rod is rotatably provided at the top of the fixed frame, a worm wheel is fixedly provided on the outer side of the rotating rod, a worm is meshedly connected to the outer side of the worm wheel, and the worm is rotatably installed on the top of the fixed frame. Positioning plates are fixedly installed at both ends of the rotating rod, and the positioning plates are used in conjunction with the movable plate.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] 1. This application can quickly disassemble and assemble the housing and the filter, which improves the efficiency of filter replacement and saves staff time. At the same time, the second spring can increase the stability of the movable plate and the fixed rod to prevent the filter from falling;

[0009] 2. This application can position the movable plate to prevent the movable plate from automatically resetting, thereby eliminating the need for staff to constantly apply pressure to the movable plate and improving the user experience of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0012] Figure 2 It is a structural schematic diagram of the movable plate in the utility model.

[0013] Figure 3 It is a structural diagram of the bracket in this utility model.

[0014] Figure 4 It is a structural schematic diagram of the connecting block and the fixing hole in the utility model.

[0015] In the figure: 1. Fan body; 11. Fixing frame; 12. Casing; 121. Mounting hole; 13. Filter; 14. Fixing rod; 15. Moving plate; 16. First spring; 17. Bracket; 18. Stabilizing rod; 19. Second spring; 2. Rotating rod; 21. Worm gear; 22. Worm; 23. Positioning plate; 3. Fixing block; 4. Protective box; 5. Window; 6. Connecting block; 61. Fixing hole. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Example: Figure 1-4As shown, the utility model provides an FFU fan filter unit quick replacement filter device, comprising a fan body 1, a fixing frame 11 is detachably installed on the outside of the fan body 1, a shell 12 is detachably provided inside the fixing frame 11, a filter 13 is fixedly installed inside the shell 12, and symmetrically distributed mounting holes 121 are provided on both sides of the shell 12, and symmetrically distributed fixing rods 14 are movably penetrated on both sides of the fixing frame 11, and a movable plate 15 is fixedly installed on one end of the fixing rod 14 away from the fixing frame 11, and the movable plate 15 and the fixed frame 11 are fixedly connected by two first springs 16, and brackets 17 are fixedly installed on both sides of the fan body 1, and a symmetrically distributed stabilizing rod 18 is fixedly installed on the side of the movable plate 15 close to the bracket 17, and the stabilizing rod 18 penetrates the bracket 17, and the bracket 17 and the movable plate 15 are fixedly connected by two second springs 19.

[0018] A rotating rod 2 is rotatably provided at the top of the fixed frame 11, and a worm gear 21 is fixedly provided on the outer side of the rotating rod 2. A worm 22 is meshedly connected to the outer side of the worm gear 21, and the worm 22 is rotatably installed on the top of the fixed frame 11. Positioning plates 23 are fixedly installed at both ends of the rotating rod 2, and the positioning plates 23 are used in conjunction with the movable plate 15.

[0019] The top of the fixed frame 11 is fixedly mounted with symmetrically distributed fixing blocks 3 , and the rotating rod 2 rotates through the fixing blocks 3 . By providing the fixing blocks 3 , the rotating rod 2 can be supported to enable it to rotate smoothly.

[0020] A protective box 4 is fixedly installed on the top of the fixed frame 11, the rotating rod 2 passes through the protective box 4, and the worm wheel 21 and the worm 22 are both located inside the protective box 4. By setting up the protective box 4, the worm wheel 21 and the worm 22 can be protected, reducing the chance of dust contacting the worm wheel 21 and the worm 22.

[0021] A window 5 is fixedly mounted on the surface of the protective box 4 . The window 5 is made of a transparent material. The provision of the window 5 facilitates observation of the worm wheel 21 and the worm 22 by the staff.

[0022] The outer side of the fixing frame 11 is fixedly mounted with symmetrically distributed connecting blocks 6 , and the surface of the connecting blocks 6 is provided with fixing holes 61 . The connection blocks 6 and the fixing holes 61 facilitate the disassembly and assembly of the fixing frame 11 by fixing screws.

[0023] Working principle: In actual use, by pulling the movable plate 15 toward the bracket 17, the movable plate 15 drives the fixed rod 14 to move until it enters the fixed frame 11. The movable plate 15 stretches the first spring 16 while moving, and the movable plate 15 squeezes the second spring 19 to deform it while approaching the bracket 17, and then the housing 12 and the filter 13 are stuck in the fixed frame 11. At this time, the pressure on the movable plate 15 is stopped, so that the first spring 16 is reset and drives the movable plate 15 and the fixed rod 14 to move toward the housing 12 and the filter 13. 3 moves, and at the same time, the second spring 19 releases the elastic force to increase the speed of resetting the movable plate 15 and the fixing rod 14 and improve their stability, until the fixing rod 14 enters the mounting hole 121, completing the fixation of the housing 12 and the filter 13; by rotating the worm 22 to drive the worm gear 21 to rotate, the worm gear 21 drives the rotating rod 2 to rotate, and the rotating rod 2 drives the positioning plate 23 to rotate until it contacts the movable plate 15, thereby preventing the movable plate 15 from automatically resetting, and thus there is no need for the staff to apply pressure on the movable plate 15 all the time, thereby improving the staff's user experience.

[0024] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A FFU fan filter unit quick filter replacement device, comprising a fan body (1), characterized in that: A fixing frame (11) is detachably mounted on the outside of the fan body (1), a shell (12) is detachably mounted inside the fixing frame (11), a filter (13) is fixedly mounted inside the shell (12), symmetrically distributed mounting holes (121) are provided on both sides of the shell (12), symmetrically distributed fixing rods (14) are movably passed through both sides of the fixing frame (11), a movable plate (15) is fixedly mounted on one end of the fixing rod (14) away from the fixing frame (11), the movable plate (15) and the fixing frame (11) are fixedly connected by two first springs (16), a bracket (17) is fixedly mounted on both sides of the fan body (1), a symmetrically distributed stabilizing rod (18) is fixedly mounted on the side of the movable plate (15) close to the bracket (17), the stabilizing rod (18) passes through the bracket (17), and the bracket (17) and the movable plate (15) are fixedly connected by two second springs (19).

2. A FFU fan filter unit quick filter replacement device according to claim 1, characterized in that: A rotating rod (2) is rotatably mounted on the top of the fixed frame (11), a worm wheel (21) is fixedly mounted on the outside of the rotating rod (2), a worm (22) is meshedly connected to the outside of the worm wheel (21), and the worm (22) is rotatably mounted on the top of the fixed frame (11). Positioning plates (23) are fixedly mounted on both ends of the rotating rod (2), and the positioning plates (23) are used in conjunction with the movable plate (15).

3. A FFU fan filter unit quick filter replacement device as claimed in claim 2, characterized in that: A symmetrically distributed fixed block (3) is fixedly mounted on the top of the fixed frame (11), and the rotating rod (2) rotates through the fixed block (3).

4. A FFU fan filter unit quick filter replacement device as claimed in claim 2, characterized in that: A protection box (4) is fixedly mounted on the top of the fixed frame (11), the rotating rod (2) passes through the protection box (4), and the worm wheel (21) and the worm (22) are both located inside the protection box (4).

5. The FFU fan filter unit quick filter replacement device according to claim 4, characterized in that: A window (5) is fixedly mounted on the surface of the protective box (4), and the window (5) is made of a transparent material.

6. The FFU fan filter unit quick filter replacement device according to claim 1, characterized in that: Symmetrically distributed connecting blocks (6) are fixedly mounted on the outer side of the fixing frame (11), and fixing holes (61) are provided on the surface of the connecting blocks (6).

Images