Fan filter assembly

Abstract

The utility model relates to the technical field of clean room ventilation, and discloses a fan filter assembly which comprises a case, a filter screen plate and an activated carbon filter plate are detachably connected to an inner cavity of the case, a dust removal assembly is arranged on one side of the filter screen plate, and a dust collection assembly is arranged below the dust removal assembly. Dust collection holes are formed in the lower surface of the case; the dust collection assembly comprises a dust collection box; through cooperation of the dust collection assembly and the dust removal assembly, a threaded rod is driven by a positive and negative rotation motor to drive a cleaning plate brush to scrape dust covering a filter screen plate, so that the dust falls into a material receiving hopper through dust collection holes, and the dust falls into a dust collection drawer in a dust collection box under the action of gravity; therefore, workers can pour out dust collected in the dust collection drawer regularly, the air circulation efficiency is improved, meanwhile, the dust is prevented from falling into the case and being attached to the filter screen plate again, and the dust filtering efficiency of the fan is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of clean room ventilation, in particular to a fan filter component. Background Art

[0002] With the continuous development of society, people's requirements for living environment are also constantly increasing. Clean room fans are an important equipment to improve the living environment. They can filter the external air to a certain extent and optimize the air quality. The filtering mechanism is an important part of the clean room fan.

[0003] In the prior art, the Chinese utility model with announcement number: CN215175721U discloses a fresh air filter device for a fresh air fan, including: a self-dust-removing preliminary filter mechanism, the self-dust-removing preliminary filter mechanism includes a preliminary filter assembly for preliminary filtering of air, an automatic dust-removing assembly for automatic dust removal of the preliminary filter assembly, and a movable processing assembly for centralized dust processing, the preliminary filter assembly is installed at one end of the filter box, the automatic dust-removing assembly is installed on both sides of the preliminary filter assembly, and the movable processing assembly is installed on one side of the filter box; a fine filtering mechanism, the fine filtering mechanism is installed at one end of the filter box away from the preliminary filter assembly, and is used for fine filtering of air. The fresh air filter device for a fresh air fan provided by the utility model is provided with a self-dust-removing preliminary filter mechanism and a fine filtering mechanism, which can perform preliminary filtering and fine filtering on the air inhaled by the fresh air fan, and automatically clean the filtered dust when performing preliminary filtering on the air;

[0004] When cleaning the filter assembly of the fresh air fan in the above technical solution, the dust generated by cleaning the filter is not convenient to discharge, and it is easy for the airflow in the fresh air fan to blow the filter again to clog the filter, and the dust removal efficiency of the filter needs to be further improved. Therefore, we need to propose a fan filter assembly. Utility Model Content

[0005] The purpose of the utility model is to provide a fan filter assembly, which is convenient for cleaning dust on the filter net, avoids excessive dust adhesion on the filter net, thereby improving the air circulation effect, convenient for collecting and processing the cleaned dust, avoids the cleaned dust from being raised again, and facilitates the disassembly and assembly of the filter net, and regularly replaces the filter net to avoid weathering damage to the filter net due to long-term use, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a fan filter assembly, comprising a chassis, a filter screen plate and an activated carbon filter plate are detachably connected to the inner cavity of the chassis, a dust removal assembly is arranged on one side of the filter screen plate, a dust collection assembly is arranged below the dust removal assembly, and a dust collection hole is opened on the lower surface of the chassis;

[0007] The dust collecting assembly comprises a dust collecting box, an upper end of one side of the dust collecting box is connected with a receiving hopper, an upper end of the receiving hopper is connected with the dust collecting hole, a cross section of the receiving hopper is arranged in a right triangle, a slot is provided on one side of the dust collecting box, a dust collecting drawer is slidably inserted in the slot;

[0008] The dust removal assembly includes a threaded rod rotatably connected to the inner cavity of the chassis, a cleaning brush is threadedly connected to the threaded rod, the bristles of the cleaning brush are in conflict with one side of the filter plate, and one end of the threaded rod passes through the chassis and is driven by a forward and reverse motor.

[0009] Preferably, the dust removal assembly also includes two groups of horizontal guide rods fixedly connected to the inner cavity of the chassis, the two groups of horizontal guide rods are slidably plugged with the cleaning brushes, and the threaded rod is arranged between the two groups of horizontal guide rods.

[0010] Preferably, a T-bar is fixedly connected to one side of the cleaning brush, limit switches are provided on both sides of the inner cavity of the chassis, a controller is provided at the bottom of the inner cavity of the chassis, and the controller is electrically connected to the limit switch and the forward and reverse motors respectively.

[0011] Preferably, a card frame, a baffle and two groups of limit blocks are provided on both sides of the inner cavity of the chassis, the filter screen plate is clamped inside the card frame, one side of the activated carbon filter plate is in conflict with one side of the baffle, and the other side of the activated carbon filter plate is in conflict with the limit assembly, and an exhaust fan unit is provided between the two groups of limit blocks.

[0012] Preferably, the limiting assembly includes a clamping plate that interferes with the activated carbon filter plate, two groups of guide plates and a fixed block are welded to one side of the clamping plate, and the fixed block is arranged between the two groups of guide plates, and a locking bolt is threadedly connected to one side of the fixed block.

[0013] Preferably, both sides of the inner cavity of the chassis are fixedly connected with guide square tubes for sliding and plugging two sets of guide plates, and one end of the locking bolt is in contact with the inner wall of the chassis.

[0014] Preferably, the exhaust fan unit includes a negative pressure fan, both ends of the lower surface of the negative pressure fan are provided with plug holes, both sides of the negative pressure fan are provided with card slots connected to the plug holes, and the card slots are slidably connected with protrusions.

[0015] Preferably, it also includes two groups of card-connecting components fixedly connected to the bottom of the chassis, the card-connecting components include a plug-in block plugged into the jack, side holes are opened on both sides of the plug-in block, a spring is fixedly connected to the bottom of the side hole, and one end of the spring is fixedly connected to a card block plugged into the card slot.

[0016] Preferably, a plurality of air inlet holes are provided on one side of the chassis, two groups of air guide plates are symmetrically welded to the inner cavity of the chassis, and an exhaust duct is connected to the other side of the chassis.

[0017] Preferably, it further comprises a machine cover, wherein a plurality of connecting bolts are inserted into the upper surface of the machine cover, a sealing gasket is bonded to the lower surface of the machine cover, and the machine cover is detachably connected to the chassis via the plurality of connecting bolts.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model mainly cooperates between the dust collection component and the dust removal component, and drives the threaded rod to drive the cleaning brush to scrape the dust covered on the filter screen through the forward and reverse motor, so that the dust falls into the receiving hopper through the dust collection hole, and the dust falls into the dust collection drawer in the dust collection box under the action of gravity, so that the staff can regularly pour out the dust collected in the dust collection drawer, which improves the air circulation efficiency and prevents the dust from falling into the chassis and attaching to the filter screen again, thereby ensuring the efficiency of the fan in filtering dust.

[0020] 2. The utility model cooperates between the limiting assembly and the guide cylinder, and the clamping plate contacts the activated carbon filter plate. The guide plate is limited by the guiding square cylinder so that the clamping plate and the activated carbon filter plate are closely fitted, and then the locking bolts are tightened to contact the inner wall of the chassis, thereby improving the stability of the clamping plate fixation.

[0021] 3. The utility model cooperates between the exhaust unit and the card-connecting assembly, and the negative pressure fan quickly finds the installation position through the limit block, so that the plug hole of the negative pressure fan fits with the plug block of the card-connecting assembly. One end of the card block is set at an oblique angle, which is convenient for being received in the side hole and then rebounding into the card slot under the action of the elastic potential energy of the spring, so as to facilitate the positioning of the negative pressure fan. The card block can be disengaged from the card slot by pressing the protrusion. Disassembly and assembly are convenient, and the negative pressure fan can be disassembled and maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the chassis of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the dust removal component of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the limit assembly of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the dust collection component of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the exhaust fan unit of the utility model;

[0028] Figure 7 for Figure 2 Schematic diagram of the structure enlarged at point A in the middle.

[0029] In the figure: 1, chassis; 2, air inlet; 3, exhaust duct; 4, machine cover; 5, air guide plate; 6, dust removal assembly; 61, forward and reverse motor; 62, threaded rod; 63, cleaning brush; 64, horizontal guide rod; 65, T-bar; 7, filter screen; 8, dust collection assembly; 81, dust collection box; 82, receiving hopper; 83, slot; 84, dust collection drawer; 9, activated carbon filter plate; 10, exhaust unit; 101, negative pressure fan; 102, socket; 103. Slot; 104. Bump; 11. Sealing pad; 12. Connecting bolt; 13. Limiting assembly; 131. Clamp; 132. Guide plate; 133. Fixing block; 134. Locking bolt; 14. Connecting assembly; 141. Insert block; 142. Side hole; 143. Spring; 144. Block; 15. Limit switch; 16. Controller; 17. Frame; 18. Baffle; 19. Guide square tube; 20. Limiting block; 21. Dust collecting hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-7 The utility model provides a technical solution: a fan filter assembly, including a chassis 1, a filter screen plate 7 and an activated carbon filter plate 9 are detachably connected to the inner cavity of the chassis 1, a dust removal assembly 6 is arranged on one side of the filter screen plate 7, a dust collection assembly 8 is arranged below the dust removal assembly 6, and a dust collection hole 21 is opened on the lower surface of the chassis 1;

[0032] The dust collecting assembly 8 includes a dust collecting box 81, an upper end of one side of the dust collecting box 81 is connected to a receiving hopper 82, an upper end of the receiving hopper 82 is connected to the dust collecting hole 21, and a cross section of the receiving hopper 82 is arranged in a right triangle. A slot 83 is provided on one side of the dust collecting box 81, and a dust collecting drawer 84 is slidably inserted in the slot 83;

[0033] The dust removal assembly 6 includes a threaded rod 62 rotatably connected to the inner cavity of the chassis 1, and a cleaning brush 63 is threadedly connected to the threaded rod 62. The bristles of the cleaning brush 63 are in conflict with one side of the filter plate 7. One end of the threaded rod 62 passes through the chassis 1 and is driven by the forward and reverse motor 61.

[0034] The dust removal assembly 6 also includes two groups of horizontal guide rods 64 fixedly connected to the inner cavity of the chassis 1. The two groups of horizontal guide rods 64 are slidably plugged with the cleaning brush 63. The threaded rod 62 is arranged between the two groups of horizontal guide rods 64. The horizontal guide rods 64 improve the stability of the cleaning brush 63 when cleaning dust on the filter plate 7.

[0035] A T-bar 65 is fixedly connected to one side of the cleaning brush 63, and limit switches 15 are arranged on both sides of the inner cavity of the chassis 1. A controller 16 is arranged at the bottom of the inner cavity of the chassis 1, and the controller 16 is electrically connected to the limit switch 15 and the forward and reverse motor 61 respectively. The T-plate abuts against the limit switch 15 and then transmits a signal to the controller 16, and the controller 16 controls the forward and reverse motor 61 to perform forward and reverse rotation, thereby improving the cleaning efficiency of the dust on the filter plate 7.

[0036] A card frame 17, a baffle 18 and two groups of limit blocks 20 are provided on both sides of the inner cavity of the chassis 1. The filter screen plate 7 is card-connected inside the card frame 17. One side of the activated carbon filter plate 9 is in conflict with one side of the baffle 18, and the other side of the activated carbon filter plate 9 is in conflict with the limit assembly 13. An exhaust unit 10 is provided between the two groups of limit blocks 20. The card frame 17 is used to facilitate the disassembly and assembly of the filter screen plate 7, so that the filter screen plate 7 can be replaced regularly.

[0037] The limiting assembly 13 includes a clamping plate 131 that contacts the activated carbon filter plate 9, two groups of guide plates 132 and a fixing block 133 are welded on one side of the clamping plate 131, and the fixing block 133 is arranged between the two groups of guide plates 132, and a locking bolt 134 is threadedly connected to one side of the fixing block 133. By tightening the locking bolt 134 to contact the inner wall of the chassis 1, the stability of the clamping plate 131 clamping the activated carbon filter plate 9 is improved, and the position of the clamping plate 131 is adjustable, which is convenient for the installation of activated carbon filter plates 9 of different thicknesses.

[0038] Both sides of the inner cavity of the chassis 1 are fixedly connected with guide square tubes 19 for sliding and plugging two sets of guide plates 132. One end of the locking bolt 134 is in contact with the inner wall of the chassis 1. The guide square tube 19 improves the stability of the position adjustment of the splint 131 and improves the fit between the splint 131 and the activated carbon filter plate 9.

[0039] The exhaust unit 10 includes a negative pressure fan 101, both ends of the lower surface of the negative pressure fan 101 are provided with sockets 102, both sides of the negative pressure fan 101 are provided with card slots 103 connected to the sockets 102, and a protrusion 104 is slidably connected in the card slot 103, and the protrusion 104 can be used to push out the card block 144 in the card slot 103, thereby facilitating the disassembly and maintenance of the negative pressure fan 101.

[0040] It also includes two groups of card-connecting components 14 fixedly connected to the bottom of the chassis 1, the card-connecting components 14 include a plug-in block 141 plugged into the socket 102, side holes 142 are provided on both sides of the plug-in block 141, a spring 143 is fixedly connected to the bottom of the side hole 142, one end of the spring 143 is fixedly connected to a card block 144 plugged into the slot 103, one side of the card block 144 is inclined to facilitate the card block 144 to be received in the side hole 142 when the plug-in block 141 is inserted into the socket 102, so that the card block 144 can be ejected into the slot 103 under the action of the spring 143 to position the negative pressure fan 101.

[0041] Multiple groups of air inlet holes 2 are provided on one side of the chassis 1, and two groups of air guide plates 5 are symmetrically welded on the inner cavity of the chassis 1. An exhaust duct 3 is connected to the other side of the chassis 1. The multiple groups of air inlet holes 2 improve the air intake efficiency, and the air guide plates 5 facilitate wind drainage, thereby improving the air filtering efficiency.

[0042] The machine cover 4 is also included. A plurality of connecting bolts 12 are inserted into the upper surface of the machine cover 4. A sealing gasket 11 is bonded to the lower surface of the machine cover 4. The machine cover 4 is detachably connected to the chassis 1 through the plurality of connecting bolts 12. The machine cover 4 is easy to assemble and disassemble, and it is convenient to disassemble, repair and replace the various components inside the chassis 1, thereby improving the overall service life.

[0043] When in use, the negative pressure fan 101 is started to generate negative pressure, so that air enters the chassis 1 through the air inlet 2, and the dust is initially filtered by the filter plate 7, and then the odor in the air is filtered by the activated carbon filter plate 9, and the filtered air is passed into the clean room through the exhaust pipe 3. After filtering the air for a long time, the command is transmitted to the controller 16 through the external remote control device. The controller 16 controls the forward and reverse motors 61 to drive the threaded rod 62 to drive the cleaning brush 63 to scrape off the dust accumulated on the filter plate 7. The dust falls into the receiving hopper 82 through the dust collecting hole 21, and falls into the dust collecting drawer 84 in the dust collecting box 81 under the drainage and gravity of the receiving hopper 82, so that it is convenient for the staff to clean the dust collected in the dust collecting drawer 84 to prevent the dust from adhering to the filter plate 7 again, thereby improving the air filtering effect.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan filter assembly, comprising a chassis (1), characterized in that: The inner cavity of the chassis (1) is detachably connected with a filter screen plate (7) and an activated carbon filter plate (9); a dust removal component (6) is provided on one side of the filter screen plate (7); a dust collection component (8) is provided below the dust removal component (6); and a dust collection hole (21) is provided on the lower surface of the chassis (1); The dust collecting assembly (8) comprises a dust collecting box (81), an upper end of one side of the dust collecting box (81) is connected to a receiving hopper (82), the upper end of the receiving hopper (82) is connected to the dust collecting hole (21), the cross section of the receiving hopper (82) is arranged in the shape of a right triangle, a slot (83) is provided on one side of the dust collecting box (81), a dust collecting drawer (84) is slidably inserted in the slot (83); The dust removal assembly (6) comprises a threaded rod (62) rotatably connected to the inner cavity of the chassis (1); a cleaning brush (63) is threadedly connected to the threaded rod (62); the bristles of the cleaning brush (63) are in contact with one side of the filter screen (7); one end of the threaded rod (62) passes through the chassis (1) and is driven by a forward and reverse motor (61).

2. The fan filter assembly according to claim 1, characterized in that: The dust removal assembly (6) also includes two groups of horizontal guide rods (64) fixedly connected to the inner cavity of the chassis (1), the two groups of horizontal guide rods (64) are slidably plugged with the cleaning brush (63), and the threaded rod (62) is arranged between the two groups of horizontal guide rods (64).

3. The fan filter assembly according to claim 1, characterized in that: A T-bar (65) is fixedly connected to one side of the cleaning brush (63), limit switches (15) are arranged on both sides of the inner cavity of the chassis (1), and a controller (16) is arranged at the bottom of the inner cavity of the chassis (1), and the controller (16) is electrically connected to the limit switch (15) and the forward and reverse motor (61) respectively.

4. The fan filter assembly according to claim 1, characterized in that: A card frame (17), a baffle (18) and two groups of limit blocks (20) are provided on both sides of the inner cavity of the chassis (1); the filter screen plate (7) is card-connected inside the card frame (17); one side of the activated carbon filter plate (9) abuts against one side of the baffle (18); the other side of the activated carbon filter plate (9) abuts against the limit assembly (13); and an exhaust fan unit (10) is provided between the two groups of limit blocks (20).

5. The fan filter assembly according to claim 4, characterized in that: The limiting assembly (13) comprises a clamping plate (131) that contacts the activated carbon filter plate (9), two groups of guide plates (132) and a fixing block (133) are welded to one side of the clamping plate (131), and the fixing block (133) is arranged between the two groups of guide plates (132), and a locking bolt (134) is threadedly connected to one side of the fixing block (133).

6. The fan filter assembly according to claim 5, characterized in that: Both sides of the inner cavity of the chassis (1) are fixedly connected with guide square tubes (19) for sliding and plugging two sets of guide plates (132), and one end of the locking bolt (134) is in contact with the inner wall of the chassis (1).

7. The fan filter assembly according to claim 4, characterized in that: The exhaust fan unit (10) comprises a negative pressure fan (101), both ends of the lower surface of the negative pressure fan (101) are provided with plug holes (102), both sides of the negative pressure fan (101) are provided with card slots (103) connected to the plug holes (102), and a protrusion (104) is slidably connected in the card slot (103).

8. The fan filter assembly according to claim 7, characterized in that: It also includes two groups of card-connecting components (14) fixedly connected to the bottom of the chassis (1), the card-connecting components (14) including an inserting block (141) plugged into the plug hole (102), side holes (142) are provided on both sides of the inserting block (141), a spring (143) is fixedly connected to the bottom of the side hole (142), and one end of the spring (143) is fixedly connected to a card block (144) plugged into the card slot (103).

9. The fan filter assembly according to claim 1, characterized in that: A plurality of groups of air inlet holes (2) are provided on one side of the chassis (1), two groups of air guide plates (5) are symmetrically welded to the inner cavity of the chassis (1), and an exhaust pipe (3) is connected to the other side of the chassis (1).

10. The fan filter assembly according to claim 9, characterized in that: It also comprises a machine cover (4), wherein a plurality of groups of connecting bolts (12) are inserted into the upper surface of the machine cover (4), a sealing gasket (11) is bonded to the lower surface of the machine cover (4), and the machine cover (4) is detachably connected to the chassis (1) via the plurality of groups of connecting bolts (12).

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