Fan filter unit with filter element convenient to replace

Abstract

The fan filter unit comprises a shell, an installation opening is formed in one end of the shell, limiting grooves are formed in the inner walls, located on the two sides of the installation opening, of the shell, a filter frame is movably arranged in the installation opening, and a threaded rotating rod is connected to the inner wall of the center of one end of the filter frame in a penetrating mode through a bearing. A locking nut is in threaded connection with the outer portion of the threaded rotating rod, a cavity is formed in the filtering frame, two racks are movably connected into the cavity, and the two racks are symmetrically arranged in a staggered mode. Fixing of the filter frame is relieved by rotating the threaded rotating rod, the filter frame can be conveniently and quickly taken out to replace the filter element, a traditional complex process is avoided, time and labor are saved, and the maintenance efficiency is improved; during operation, the air compressor and the dust collection fan work cooperatively, the filter element is cleaned automatically, the filtering effect is kept, the service life of the filter element is prolonged, secondary pollution during replacement is reduced, and the cleanliness of the operation environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan filter unit with convenient filter element replacement. Background Art

[0002] The fan filter unit is an air purification equipment widely used in clean rooms, laboratories, electronics factories and other places. It mainly filters dust, impurities, etc. in the air through the filter element.

[0003] Traditional fan filter units often face numerous challenges when it comes to filter element replacement. Firstly, the filter element's complex mounting structure makes removal and installation tedious and time-consuming, requiring significant effort and labor. This not only impacts the equipment's normal operation but also increases maintenance costs. Secondly, the lack of effective automatic cleaning devices before filter element replacement causes dust and impurities accumulated on the filter element's surface to fly off during the replacement process, causing secondary contamination and impacting the new filter element's initial filtration performance and service life.

[0004] To this end, we propose a fan filter unit that is easy to replace the filter element. Utility Model Content

[0005] The main purpose of the utility model is to provide a fan filter unit with easy filter element replacement, in order to improve the overall performance and ease of use of the fan filter unit, thereby improving its air purification effect and practical value in various places, and effectively solving the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The filter element of the present invention is a fan filter unit for convenient replacement of filter elements, comprising a shell, one end of the shell is provided with a mounting opening, the inner walls of the shell on both sides of the mounting opening are provided with limit grooves, a filter holder is movably provided in the mounting opening, a threaded rotating rod is connected to the central inner wall of one end of the filter holder through a bearing, the outer thread of the threaded rotating rod is connected to a locking nut, a cavity is provided inside the filter holder, two racks are movably connected in the cavity, and the two racks are symmetrical and staggered, one end of the threaded rotating rod is fixedly connected to a gear, the gear is meshed with the rack, the filter holder is provided with grooves on both sides near the cavity, one end of the rack is fixedly connected to an insertion rod, the insertion rod passes through the filter holder and the cavity and is fixedly connected to a limit block, and the limit blocks are adapted to the groove and the limit slot;

[0008] An air compressor and a dust suction fan are respectively provided at the top of the shell, and a first connecting pipe and a second connecting pipe are respectively fixedly installed at the bottom ends of the air compressor and the dust suction fan. The first connecting pipe and the second connecting pipe both pass through the shell and are connected to an air nozzle and a dust suction port.

[0009] By adopting the above technical solution, when the filter element needs to be replaced, the threaded rotating rod is rotated, and the gear on the threaded rotating rod rotates accordingly, driving the rack meshing with it to move, and the rod at one end of the rack moves accordingly, so that the limit block disengages from the limit groove, releasing the fixation of the filter holder. Then, the filter holder can be taken out of the installation opening and the filter element body can be replaced; conversely, the threaded rotating rod is fixed with one hand, and the locking nut is continuously turned with the other hand to make it move downward continuously until it contacts one end of the filter holder. At this time, the locking nut stops rotating and the locking work is completed;

[0010] During the operation of the filter unit, the air compressor generates compressed air, which is transported to the air nozzle through the first connecting pipe. The air nozzle ejects high-speed airflow to blow away the dust and impurities on the surface of the filter element; at the same time, the dust suction fan starts to generate negative pressure at the dust suction port through the second connecting pipe, sucking away the blown dust and impurities, thereby realizing automatic cleaning of the filter element, maintaining the filtering effect of the filter element, extending the service life of the filter element, and reducing secondary pollution caused by dust and impurities when replacing the filter element, thereby improving the efficiency of filter element replacement and the cleanliness of the operating environment.

[0011] Furthermore, the top and bottom ends of the cavity are both provided with slide grooves, and sliders are slidably connected inside the two slide grooves. The top and bottom ends of the two sliders away from the slide grooves are fixedly connected to the racks respectively.

[0012] By adopting the above technical solution, when the threaded rotating rod rotates to drive the gear to rotate, the rack meshing with the gear starts to move. Since the top and bottom ends of the rack are respectively fixedly connected to the slider located in the slide groove, the slide groove provides a stable moving track for the slider. When the rack is driven by the gear to move horizontally, the slider slides accordingly in the slide groove. This structural design limits the moving direction of the rack so that it can only move smoothly and accurately in the horizontal direction, thereby ensuring that the insertion rod can be accurately inserted into or out of the limit groove, thereby realizing the fixing or unlocking operation of the filter rack; at the same time, the cooperation between the slide groove and the slider also increases the stability and reliability of the rack movement, reducing the failures and errors that may be caused by unstable rack movement.

[0013] Furthermore, a filter element body is installed on the inner wall of the filter frame, and rollers are rotatably connected to both sides of the filter frame close to the filter element body.

[0014] By adopting the above technical solution, when air flows through the filter frame, the air is filtered and purified by the filter element body installed on the inner wall of the filter frame; and the rollers rotatably connected to the filter frame on both sides close to the filter element body can reduce the friction resistance between the filter frame and other components when the filter frame is installed, disassembled or moved inside the unit, making the operation of the filter frame smoother and more convenient, helping to improve the efficiency of replacing the filter element and reduce equipment wear.

[0015] Furthermore, a support plate is fixedly connected to the middle of the inner walls on both sides of the shell, a motor is fixedly installed on the top of the support plate, and a fan blade is fixedly connected to the output shaft of the motor.

[0016] By adopting the above technical solution, the motor fixedly installed on the support plate is started, and the output shaft of the motor rotates, driving the fan blades fixedly connected to the output shaft to rotate at high speed. The rotation of the fan blades generates suction, which draws the outside air into the inside of the shell, and the air is filtered through the filter element body on the filter frame. The filtered clean air is then discharged, thereby achieving air purification and circulation.

[0017] Furthermore, a dustproof net is provided on the outer shell near the top of the fan blade.

[0018] By adopting the above technical solution, the dustproof net arranged near the top of the fan blade on the outer shell can prevent larger particles of dust, debris, etc. from entering the interior of the unit, playing a role of preliminary filtration and protection of the internal structure, reducing the damage of impurities to internal components, and at the same time also reducing the filtering burden of subsequent filter elements to a certain extent, thereby extending the service life of the filter elements.

[0019] Furthermore, a handle is provided on the top of the shell.

[0020] By adopting the above technical solution, the handle can have a position that is convenient for the operator to hold and apply force when the fan filter unit needs to be moved or transported, making the entire operation easier and more convenient.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The utility model provides a fan filter unit that is convenient for replacing filter elements. By rotating the threaded rotating rod to drive the rack to move, the limit block is disengaged from the limit groove, thereby releasing the fixation of the filter frame. The filter frame can be easily and quickly taken out to replace the filter element. This design avoids the traditional complicated disassembly and installation process, greatly saves time and manpower, and thus improves the maintenance efficiency of the equipment.

[0023] (2) The utility model provides a fan filter unit that is convenient for replacing filter elements. When the filter unit is running, the air compressor sprays high-speed airflow through the air nozzle to blow away the dust and impurities on the surface of the filter element. At the same time, the dust suction fan generates negative pressure at the dust suction port to suck them away. This automatic cleaning process not only maintains the filtering effect of the filter element and extends the service life of the filter element, but also significantly reduces the secondary pollution caused by the flying dust and impurities when replacing the filter element, thereby improving the cleanliness of the operating environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a structural schematic diagram of a fan filter unit with convenient filter element replacement.

[0025] Figure 2 This is a schematic diagram of the disassembled structure of a fan filter unit that facilitates filter element replacement in the utility model.

[0026] Figure 3 The utility model is a schematic diagram of the internal structure of a fan filter unit with convenient filter element replacement.

[0027] Figure 4 The utility model is a schematic diagram of the internal structure of a fan filter unit with convenient filter element replacement.

[0028] Figure 5 The utility model is a fan filter unit with convenient filter element replacement Figure 2 Enlarged view of point A in the middle.

[0029] Figure 6 The utility model is a schematic diagram of the mounting frame structure of a fan filter unit that facilitates the replacement of filter elements.

[0030] Figure 7 The utility model is a fan filter unit with convenient filter element replacement Figure 6 Enlarged view of point B in the middle.

[0031] Figure 8 The utility model is a schematic cross-sectional structural diagram of a mounting frame of a fan filter unit for convenient filter element replacement.

[0032] In the figure: 1. Housing; 2. Mounting port; 3. Filter holder; 4. Threaded rod; 5. Gear; 6. Rack; 7. Insert rod; 8. Limit block; 9. Lock nut; 10. Air compressor; 11. Dust suction fan; 12. First connecting pipe; 13. Second connecting pipe; 14. Air nozzle; 15. Dust suction port; 16. Groove; 17. Cavity; 18. Slide; 19. Slider; 20. Roller; 21. Filter element body; 22. Limit slot; 23. Support plate; 24. Motor; 25. Fan blade; 26. Dust screen; 27. Handle. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] In order to improve the overall performance and ease of use of fan filter units, thereby improving their air purification effect and practical value in various places, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8The filter element of the present invention is convenient to replace. As shown in the figure, a fan filter unit for convenient replacement of filter elements comprises a shell 1, one end of the shell 1 is provided with a mounting port 2, and the inner walls of the shell 1 on both sides of the mounting port 2 are provided with limit slots 22, a filter holder 3 is movably provided in the mounting port 2, the central inner wall of one end of the filter holder 3 is penetrated by a threaded rotating rod 4, the outer thread of the threaded rotating rod 4 is connected with a locking nut 9, a cavity 17 is provided inside the filter holder 3, two racks 6 are movably connected in the cavity 17, and the two racks 6 are symmetrical and staggered. One end of the threaded rotating rod 4 is fixedly connected to a gear 5, and the gear 5 is meshed with the rack 6, and the filter holder 3 is provided with grooves 16 on both sides near the cavity 17, and one end of the rack 6 is fixedly connected to an insertion rod 7, which penetrates the filter holder 3 and the cavity 17 and is fixedly connected to a limit block 8, and the limit block 8 is adapted to the groove 16 and the limit slot 22;

[0035] An air compressor 10 and a dust suction fan 11 are respectively provided at the top of the shell 1, and a first connecting pipe 12 and a second connecting pipe 13 are respectively fixedly installed at the bottom ends of the air compressor 10 and the dust suction fan 11. The first connecting pipe 12 and the second connecting pipe 13 both pass through the shell 1 and are connected to an air nozzle 14 and a dust suction port 15.

[0036] When in use, when the filter element needs to be replaced, the threaded rotating rod 4 is rotated, and the gear 5 on the threaded rotating rod 4 rotates accordingly, driving the rack 6 meshing with it to move, and the insertion rod 7 at one end of the rack 6 moves accordingly, so that the limit block 8 is disengaged from the limit groove 22, releasing the fixation of the filter holder 3. Then, the filter holder 3 can be taken out of the installation opening 2 and the filter element body 21 can be replaced; conversely, the threaded rotating rod 4 is fixed with one hand, and the locking nut 9 is continuously turned with the other hand to make it move downward continuously until it contacts one end of the filter holder 3. At this time, the locking nut 9 can no longer rotate to complete the locking work;

[0037] During the operation of the filter unit, the air compressor 10 generates compressed air, which is delivered to the air nozzle 14 through the first connecting pipe 12. The air nozzle 14 ejects a high-speed airflow to blow away the dust and impurities on the surface of the filter element; at the same time, the dust suction fan 11 is started, and a negative pressure is generated at the dust suction port 15 through the second connecting pipe 13 to suck away the blown dust and impurities, thereby realizing automatic cleaning of the filter element, maintaining the filtering effect of the filter element, extending the service life of the filter element, and reducing secondary pollution caused by dust and impurities when replacing the filter element, thereby improving the efficiency of filter element replacement and the cleanliness of the operating environment.

[0038] For example, Figure 8 As shown, the present invention also includes that the top and bottom ends of the cavity 17 are both provided with a slide groove 18, and the two slide grooves 18 are slidably connected with sliders 19 inside, and the top and bottom ends of the two sliders 19 away from the slide grooves 18 are fixedly connected to the rack 6 respectively.

[0039] When in use, when the threaded rotating rod 4 rotates to drive the gear 5 to rotate, the rack 6 meshing with the gear 5 starts to move. Since the top and bottom ends of the rack 6 are fixedly connected to the slider 19 located in the slide groove 18 respectively, the slide groove 18 provides a stable moving track for the slider 19. When the rack 6 is driven by the gear 5 to move horizontally, the slider 19 slides accordingly in the slide groove 18. This structural design limits the moving direction of the rack 6, so that it can only move smoothly and accurately in the horizontal direction, thereby ensuring that the insertion rod 7 can be accurately inserted into or out of the limit groove 22, thereby realizing the fixing or unlocking operation of the filter rack 3; at the same time, the cooperation between the slide groove 18 and the slider 19 also increases the stability and reliability of the movement of the rack 6, reducing the failures and errors that may be caused by the unstable movement of the rack 6.

[0040] For example, Figure 6 、 Figure 7 As shown, the present invention further includes that a filter element body 21 is installed on the inner wall of the filter frame 3 , and rollers 20 are rotatably connected to both sides of the filter frame 3 close to the filter element body 21 .

[0041] During use, when air flows through the filter frame 3, the air is filtered and purified by the filter element body 21 installed on the inner wall of the filter frame 3; and the rollers 20 rotatably connected to the filter frame 3 on both sides of the filter element body 21 can reduce the friction resistance between the filter frame 3 and other components when the filter frame 3 is installed, disassembled or moved inside the unit, making the operation of the filter frame 3 smoother and more convenient, helping to improve the efficiency of replacing the filter element and reduce equipment wear.

[0042] For example, Figure 3 、 Figure 4 As shown, the present invention further includes a support plate 23 fixedly connected to the middle of the inner walls on both sides of the shell 1, a motor 24 fixedly installed on the top of the support plate 23, and a fan blade 25 fixedly connected to the output shaft of the motor 24.

[0043] When in use, the motor 24 fixedly mounted on the support plate 23 is started, and the output shaft of the motor 24 rotates, driving the fan blades 25 fixedly connected to the output shaft to rotate at high speed. The rotation of the fan blades 25 generates suction, sucking the outside air into the interior of the housing 1, so that the air passes through the filter element body 21 on the filter frame 3 for filtration, and the filtered clean air is then discharged, thereby achieving air purification and circulation.

[0044] For example, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the present invention further includes that a dustproof net 26 is provided at the top of the housing 1 near the fan blade 25 .

[0045] During use, the dustproof net 26 arranged near the top of the fan blade 25 of the outer shell 1 can prevent larger particles of dust, debris, etc. from entering the interior of the unit, playing a role of preliminary filtering and protecting the internal structure, reducing the damage of impurities to internal components, and at the same time also reducing the filtering burden of subsequent filter elements to a certain extent, thereby extending the service life of the filter elements.

[0046] For example, Figure 1 、 Figure 2 、 Figure 3 As shown, the present invention further includes a handle 27 provided at the top of the housing 1 .

[0047] When in use, the handle 27 provides a convenient location for the operator to hold and apply force when the operator needs to move or transport the fan filter unit, making the entire operation easier and more convenient.

[0048] It should be noted that the present invention is a fan filter unit that is convenient for replacing the filter element. When the motor 24 is started, the output shaft of the motor 24 drives the fan blades 25 to rotate at high speed, generating suction to suck the outside air into the housing 1. The air passes through the filter element body 21 on the filter frame 3 for filtration, and the filtered clean air is discharged, thereby achieving air purification and circulation. When replacing the filter element, one hand fixes the threaded rotating rod 4, and the other hand rotates the locking nut 9 to move it upward until it is separated from the filter frame 3. The threaded rotating rod 4 is rotated, and the gear 5 on the threaded rotating rod 4 rotates accordingly, driving the rack 6 meshing with it to move, and the rod 7 at one end of the rack 6 moves accordingly, so that the limit block 8 disengages from the limit groove 22, thereby releasing the fixation of the filter frame 3. Remove the filter rack 3 from the mounting port 2 and replace the filter element body 21. After the replacement is completed, insert the filter rack 3 into the mounting port 2, rotate the threaded rotating rod 4 in the opposite direction, so that the limit block 8 is inserted into the limit groove 22, fix the filter rack 3, fix the threaded rotating rod 4 with one hand, and rotate the locking nut 9 with the other hand to make it move downward continuously until it contacts one end of the filter rack 3 to complete the locking work; during the operation of the filter unit, the air compressor 10 generates compressed air, which is transported to the air nozzle 14 through the first connecting pipe 12. The air nozzle 14 ejects a high-speed airflow to blow away the dust and impurities on the surface of the filter element; at the same time, the dust suction fan 11 is started, and a negative pressure is generated at the dust suction port 15 through the second connecting pipe 13 to suck away the blown dust and impurities.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A fan filter unit with convenient filter element replacement, comprising a housing (1), characterized in that: One end of the housing (1) is provided with a mounting opening (2), and the inner walls of the housing (1) on both sides of the mounting opening (2) are provided with limiting grooves (22), a filter frame (3) is movably provided in the mounting opening (2), a threaded rotating rod (4) is connected to the central inner wall of one end of the filter frame (3) through a bearing, and a locking nut (9) is connected to the outer thread of the threaded rotating rod (4), and a cavity (17) is provided inside the filter frame (3), and two racks (6) are movably connected in the cavity (17). The two racks (6) are symmetrical and staggered. One end of the threaded rotating rod (4) is fixedly connected to a gear (5), and the gear (5) is meshed with the rack (6). Both sides of the filter frame (3) close to the cavity (17) are provided with grooves (16). One end of the rack (6) is fixedly connected to an insertion rod (7), and the insertion rod (7) passes through the filter frame (3) and the cavity (17) and is fixedly connected to a limit block (8). The limit block (8) is adapted to the groove (16) and the limit slot (22). An air compressor (10) and a dust suction fan (11) are respectively provided at the top end of the housing (1); a first connecting pipe (12) and a second connecting pipe (13) are respectively fixedly installed at the bottom ends of the air compressor (10) and the dust suction fan (11); the first connecting pipe (12) and the second connecting pipe (13) both pass through the housing (1) and are connected to an air nozzle (14) and a dust suction port (15).

2. A fan filter unit with convenient filter element replacement according to claim 1, characterized in that: The top and bottom ends of the cavity (17) are both provided with a slide groove (18), and the two slide grooves (18) are slidably connected with sliders (19) inside. The top and bottom ends of the two sliders (19) away from the slide groove (18) are fixedly connected to the rack (6) respectively.

3. A fan filter unit with convenient filter element replacement according to claim 1, characterized in that: A filter element body (21) is installed on the inner wall of the filter frame (3), and rollers (20) are rotatably connected on both sides of the filter frame (3) close to the filter element body (21).

4. A fan filter unit with convenient filter element replacement according to claim 1, characterized in that: A support plate (23) is fixedly connected to the middle of the inner walls on both sides of the housing (1), a motor (24) is fixedly installed on the top of the support plate (23), and a fan blade (25) is fixedly connected to the output shaft of the motor (24).

5. The fan filter unit with convenient filter element replacement according to claim 1, characterized in that: The housing (1) is provided with a dustproof net (26) at the top end close to the fan blade (25).

6. The fan filter unit with convenient filter element replacement according to claim 1, characterized in that: A handle (27) is provided at the top end of the housing (1).

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