Fresh air filtering device for clean room

Abstract

The utility model discloses a clean room fresh air filtering device which comprises a shell, the inner wall of the shell is fixedly connected with a clamping frame, the inner wall of the clamping frame is connected with a filtering assembly in a clamping mode, a clamping assembly is movably connected between the inner wall of the clamping frame and the outer wall of the filtering assembly, and the clamping assembly comprises a pulling block. The pulling block is movably mounted on the inner wall of the clamping frame, a dismounting plate is clamped between the bottom of the filtering assembly and the inner wall of the clamping frame, and a plurality of fixing bolts are fixedly connected to the bottom of the dismounting plate. Fixing bolts are dismounted, a dismounting plate is taken down, pulling blocks on the two sides of a clamping frame are pulled, the pulling blocks are made to move downwards, a steel wire rope is pulled on a limiting bottom plate, clamping blocks are pulled out of clamping grooves and enter shrinkage grooves, and at the moment, the filtering outer frame gets rid of buckles and can be easily taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air filters, in particular to a fresh air filtering device for a clean room. Background Art

[0002] A clean room is a well-sealed space where parameters such as air cleanliness, temperature, humidity, pressure, and noise are controlled as required. A clean room needs to be equipped with a fresh air filter for internal ventilation to ensure that the internal air meets the standards.

[0003] The existing fresh air filter device is equipped with a variety of different filter plates due to filtering requirements, which makes it cumbersome to replace the filter plates in the device. After long-term use, a lot of dust will accumulate inside the filter plates of the fresh air filter device, which needs to be cleaned in time. Therefore, an extremely simple replacement method is needed to extend the life of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a clean room fresh air filtering device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clean room fresh air filtering device, comprising a shell, the inner wall of the shell is fixedly connected with a clamping frame, the inner wall of the clamping frame is clamped with a filter assembly, the inner wall of the clamping frame and the outer wall of the filter assembly are movably connected with a clamping assembly, the clamping assembly comprises a prying block, the prying block is movably installed on the inner wall of the clamping frame, a disassembly plate is clamped between the bottom of the filter assembly and the inner wall of the clamping frame, the bottom of the disassembly plate is fixedly connected with a plurality of fixing bolts, the bottom of the clamping frame and the top of the disassembly plate are threadedly connected by a plurality of fixing bolts, and the outer wall of the disassembly plate is clamped with the inner wall of the shell.

[0006] The above structure achieves the effects of simple clamping and high sealing. Since the clean room has high requirements for fresh air, the filter assembly needs to be replaced frequently. Therefore, a clamping assembly is provided for unified disassembly and assembly to avoid damage to the device due to excessive or cumbersome replacement of parts. The filter outer frame is released from the clamping frame by prying the prying block.

[0007] As a further preferred embodiment of the present technical solution, the filter assembly includes a filter outer frame, and the inner wall of the filter outer frame is fixedly connected with a concave-convex honeycomb filter mesh, a positively charged tungsten wire, a negative grid plate and an activated carbon filter mesh.

[0008] The above structure achieves a multiple filtering effect. The concave-convex honeycomb filter in the filter outer frame filters out large foreign particles such as hair and pollen, and the concave-convex shape greatly increases the filtering contact area. The positively charged tungsten wire causes the passing suspended particulate dust to be attached with positive charges, which are then adsorbed by the negative electrode grid plate. Finally, the activated carbon filter adsorbs harmful gases such as formaldehyde and toluene in the fresh air.

[0009] As a further preferred embodiment of the present technical solution, the clamping assembly includes a plurality of contraction grooves, and the plurality of contraction grooves are all opened on the inner wall of the clamping frame. The inner wall of the contraction groove is fixedly connected to a limiting base plate, the inner wall of the limiting base plate is fixedly connected to a plurality of contraction springs, and a clamping block is fixedly connected between one ends of the plurality of contraction springs.

[0010] As a further preferred embodiment of the present technical solution, the clamping assembly includes a plurality of clamping grooves, the plurality of clamping grooves are all opened on the outer wall of the filter outer frame, and the inner walls of the plurality of clamping grooves are respectively clamped with the outer walls of a plurality of clamping blocks.

[0011] As a further preferred embodiment of the present technical solution, the outer wall of the clamping block is fixedly connected with a steel wire rope, and one end of a plurality of the steel wire ropes is fixedly connected to the breaking block by penetrating a limiting bottom plate and a clamping frame.

[0012] As a further preferred embodiment of the present technical solution, a compression spring is fixedly connected to the bottom of the bending block, and one end of the compression spring is fixedly connected to the inner wall of the clamping frame.

[0013] The above structure achieves the effect of easy disassembly and assembly. During disassembly, the fixing bolts are removed, the disassembly plate is taken down, the prying blocks on both sides of the clamping frame are moved downward, and the wire rope is pulled on the limiting bottom plate to pull the clamping blocks out of the clamping grooves and into the contraction grooves. At this time, the filter outer frame is freed from the buckles and can be easily taken out. During assembly, the prying blocks are returned to their original positions, the squeezing spring unloads the force and relaxes the wire rope. When the filter outer frame is pushed from bottom to top, the filter outer frame will squeeze the clamping blocks to make the contraction spring deform and contract into the contraction groove. After the filter outer frame passes through, it can be clamped in the clamping frame, and then the disassembly plate is installed to complete the assembly.

[0014] As a further preferred embodiment of the present technical solution, an air inlet and an air outlet are respectively provided at two ends of the shell, a fan rack is fixedly connected to the inner wall of the shell, and a uniform speed fan is fixedly connected to the inner wall of the fan rack.

[0015] The above structure plays the role of air intake and exhaust. The filter device is installed in the fresh air system and aligned with the air inlet and the air outlet. The fresh air enters the filter device from the air inlet, and finally the filtered fresh air is discharged from the air outlet driven by the uniform speed fan.

[0016] The utility model provides a clean room fresh air filtering device, which has the following beneficial effects:

[0017] (1) The utility model provides a clamping assembly for unified assembly and disassembly, thereby avoiding damage to the device caused by excessive or cumbersome replacement of parts. When disassembling, remove the fixing bolts, take down the disassembly plate, and move the movable blocks on both sides of the clamping frame to move the movable blocks downward and pull the wire rope on the limit bottom plate to pull the clamping blocks out of the clamping groove and into the contraction groove. At this time, the filter outer frame is free from the buckle and can be easily taken out; when assembling, return the movable blocks to their original positions, squeeze the spring to release the force and relax the wire rope. When the filter outer frame is pushed from bottom to top, the filter outer frame will squeeze the clamping blocks to make the contraction spring deform and contract into the contraction groove. After the filter outer frame passes through, it can be clamped in the clamping frame, and then the disassembly plate is installed to complete the assembly, thereby achieving the effect of simple disassembly and assembly.

[0018] (2) The utility model enters the filter device through the air inlet, and the concave-convex honeycomb filter in the filter outer frame filters out large foreign matter such as hair and pollen. The concave-convex shape greatly increases the filter contact area, and the positively charged tungsten wire causes the suspended particulate dust passing through to be attached with positive charges, which are then adsorbed by the negative grid plate. Finally, the activated carbon filter adsorbs harmful gases such as formaldehyde and toluene in the fresh air. Finally, the filtered fresh air is discharged from the air outlet driven by the uniform speed fan, achieving a multiple filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the disassembly plate of the utility model;

[0021] Figure 3 This is a structural schematic diagram of the clamping frame of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the enlarged portion A of the clamping assembly of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the filter component of the utility model.

[0024] In the figure: 1. outer shell; 2. air inlet; 3. disassembly plate; 4. fixing bolt; 5. air outlet; 6. snap-on frame; 7. filter assembly; 701. filter frame; 702. concave-convex honeycomb filter; 703. positively charged tungsten wire; 704. negative grid plate; 705. activated carbon filter; 8. fan frame; 9. uniform speed fan; 10. snap-on assembly; 1001. snap-on groove; 1002. contraction groove; 1003. snap-on block; 1004. contraction spring; 1005. limit bottom plate; 1006. wire rope; 1007. prying block; 1008. extrusion spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] The utility model provides a technical solution: Figure 2 and Figure 4 As shown, in the present embodiment, a clean room fresh air filtering device comprises an outer shell 1, an inner wall of the outer shell 1 is fixedly connected with a clamping frame 6, an inner wall of the clamping frame 6 is clamped with a filter assembly 7, a clamping assembly 10 is movably connected between the inner wall of the clamping frame 6 and the outer wall of the filter assembly 7, the clamping assembly 10 comprises a prying block 1007, the prying block 1007 is movably mounted on the inner wall of the clamping frame 6, a disassembly plate 3 is clamped between the bottom of the filter assembly 7 and the inner wall of the clamping frame 6, a plurality of fixing bolts 4 are fixedly connected to the bottom of the disassembly plate 3, the bottom of the clamping frame 6 and the top of the disassembly plate 3 are threadedly connected by a plurality of fixing bolts 4, and the outer wall of the disassembly plate 3 is clamped with the inner wall of the outer shell 1.

[0027] Since the clean room has a relatively high requirement for fresh air, the filter assembly 7 needs to be replaced frequently, so a snap-on assembly 10 is provided for unified disassembly and assembly to avoid damage to the device due to excessive or cumbersome replacement of parts. The filter outer frame 701 is released from the snap-on frame 6 by prying the prying block 1007, thereby achieving the effect of simple clamping and high sealing.

[0028] like Figure 5 As shown, the filter assembly 7 includes a filter outer frame 701 , and the inner wall of the filter outer frame 701 is fixedly connected with a concave-convex honeycomb filter 702 , a positively charged tungsten wire 703 , a negative grid plate 704 and an activated carbon filter 705 .

[0029] The concave-convex honeycomb filter 702 in the filter outer frame 701 filters out large foreign particles such as hair and pollen, and the concave-convex shape greatly increases the filter contact area. The positively charged tungsten wire 703 causes the passing suspended particulate dust to be attached with positive charges, which are then adsorbed by the negative grid plate 704. Finally, the activated carbon filter 705 adsorbs harmful gases such as formaldehyde and toluene in the fresh air, achieving a multiple filtration effect.

[0030] like Figure 3 and Figure 4As shown, the clamping assembly 10 includes a plurality of contraction grooves 1002, and the plurality of contraction grooves 1002 are all opened on the inner wall of the clamping frame 6. The inner wall of the contraction groove 1002 is fixedly connected to a limiting bottom plate 1005, and the inner wall of the limiting bottom plate 1005 is fixedly connected to a plurality of contraction springs 1004, and a clamping block 1003 is fixedly connected between one ends of the plurality of contraction springs 1004. The clamping assembly 10 includes a plurality of clamping grooves 1001, and the plurality of clamping grooves 1001 are all opened on the filter The outer wall of the outer frame 701 and the inner walls of the multiple snap-in grooves 1001 are respectively snap-connected to the outer walls of the multiple snap-in blocks 1003, and the outer wall of the snap-in block 1003 is fixedly connected with a steel wire rope 1006. One ends of the multiple steel wire ropes 1006 are fixedly connected to the bend block 1007 by penetrating the limiting bottom plate 1005 and the snap-in frame 6. The bottom of the bend block 1007 is fixedly connected with an extrusion spring 1008, and one end of the extrusion spring 1008 is fixedly connected to the inner wall of the snap-in frame 6.

[0031] When disassembling, remove the fixing bolts 4, take down the disassembly plate 3, and pry the prying blocks 1007 on both sides of the clamping frame 6 to make the prying blocks 1007 move downward and pull the wire rope 1006 on the limiting bottom plate 1005 to pull the clamping blocks 1003 out of the clamping groove 1001 and into the contraction groove 1002. At this time, the filter outer frame 701 is free from the buckle and can be easily taken out; when assembling, return the prying blocks 1007 to their original positions, squeeze the spring 1008 to release the force and relax the wire rope 1006. When the filter outer frame 701 is pushed from bottom to top, the filter outer frame 701 will squeeze the clamping blocks 1003 to make the contraction spring 1004 deform and contract into the contraction groove 1002. After passing through, the filter outer frame 701 can be clamped in the clamping frame 6, and then the disassembly plate 3 is installed to complete the assembly, achieving the effect of simple disassembly and assembly.

[0032] like Figure 1 and Figure 2 As shown, an air inlet 2 and an air outlet 5 are respectively provided at two ends of the housing 1 , a fan frame 8 is fixedly connected to the inner wall of the housing 1 , and a uniform speed fan 9 is fixedly connected to the inner wall of the fan frame 8 .

[0033] The filter device is installed in the fresh air system, aligned with the air inlet 2 and the air outlet 5, and the fresh air enters the filter device from the air inlet 2. Finally, the filtered fresh air is discharged from the air outlet 5 driven by the uniform speed fan 9, playing the role of air intake and exhaust.

[0034] The utility model provides a clean room fresh air filtering device, the specific working principle is as follows:

[0035] During operation, the filter device is installed in the fresh air system and is aligned with the air inlet 2 and the air outlet 5. The fresh air enters the filter device from the air inlet 2, and the large foreign particles such as hair and pollen are filtered out by the concave-convex honeycomb filter 702 in the filter outer frame 701. The filter contact area is greatly increased by setting the concave-convex shape, and the suspended particulate dust passing through is attached with positive charges by the positively charged tungsten wire 703, and then adsorbed by the negative grid plate 704, and finally the activated carbon filter 705 adsorbs harmful gases such as formaldehyde and toluene in the fresh air. Finally, the filtered fresh air is discharged from the air outlet 5 driven by the uniform speed fan 9. Since the clean room has a relatively high requirement for fresh air, the filter assembly 7 needs to be replaced frequently, so a snap-on assembly 10 is provided for its unified disassembly and assembly to avoid replacing too many parts or The assembling process is cumbersome and may cause damage to the device. When disassembling, remove the fixing bolts 4, remove the disassembly plate 3, and pry the prying blocks 1007 on both sides of the clamping frame 6 to make the prying blocks 1007 move downward and pull the wire rope 1006 on the limiting bottom plate 1005 to pull the clamping blocks 1003 out of the clamping groove 1001 and into the contraction groove 1002. At this time, the filter outer frame 701 is free from the buckle and can be easily taken out; when assembling, return the prying blocks 1007 to their original positions, squeeze the spring 1008 to unload the force and relax the wire rope 1006. When the filter outer frame 701 is pushed from bottom to top, the filter outer frame 701 will squeeze the clamping blocks 1003 to make the contraction spring 1004 deform and contract into the contraction groove 1002. After passing through, the filter outer frame 701 can be clamped in the clamping frame 6, and then the disassembly plate 3 is installed to complete the assembly, which is very simple.

[0036] 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 clean room fresh air filtering device, comprising a housing (1), characterized in that: The inner wall of the housing (1) is fixedly connected to a clamping frame (6), the inner wall of the clamping frame (6) is clamped with a filter assembly (7), the inner wall of the clamping frame (6) and the outer wall of the filter assembly (7) are movably connected to a clamping assembly (10), the clamping assembly (10) comprises a bend block (1007), the bend block (1007) is movably mounted on the inner wall of the clamping frame (6), a disassembly plate (3) is clamped between the bottom of the filter assembly (7) and the inner wall of the clamping frame (6), the bottom of the disassembly plate (3) is fixedly connected with a plurality of fixing bolts (4), the bottom of the clamping frame (6) and the top of the disassembly plate (3) are threadedly connected via a plurality of fixing bolts (4), and the outer wall of the disassembly plate (3) is clamped with the inner wall of the housing (1).

2. A clean room fresh air filtering device according to claim 1, characterized in that: The filter assembly (7) comprises a filter outer frame (701), the inner wall of which is fixedly connected a concave-convex honeycomb filter screen (702), a positively charged tungsten wire (703), a negative grid plate (704) and an activated carbon filter screen (705).

3. A clean room fresh air filtering device according to claim 1, characterized in that: The clamping assembly (10) comprises a plurality of contraction grooves (1002), the plurality of contraction grooves (1002) are all arranged on the inner wall of the clamping frame (6), the inner wall of the contraction groove (1002) is fixedly connected to a limiting bottom plate (1005), the inner wall of the limiting bottom plate (1005) is fixedly connected to a plurality of contraction springs (1004), and a clamping block (1003) is fixedly connected between one ends of the plurality of contraction springs (1004).

4. A clean room fresh air filtering device according to claim 3, characterized in that: The snap-fit ​​assembly (10) comprises a plurality of snap-fit ​​grooves (1001), wherein the plurality of snap-fit ​​grooves (1001) are all provided on the outer wall of the filter outer frame (701), and the inner walls of the plurality of snap-fit ​​grooves (1001) are snap-fitted with the outer walls of the plurality of snap-fit ​​blocks (1003) respectively.

5. A clean room fresh air filtering device according to claim 3, characterized in that: The outer wall of the clamping block (1003) is fixedly connected with a steel wire rope (1006), and one end of a plurality of the steel wire ropes (1006) is fixedly connected to the breaking block (1007) by penetrating the limiting bottom plate (1005) and the clamping frame (6).

6. A clean room fresh air filtering device according to claim 1, characterized in that: The bottom of the bending block (1007) is fixedly connected to a compression spring (1008), and one end of the compression spring (1008) is fixedly connected to the inner wall of the clamping frame (6).

7. A clean room fresh air filtering device according to claim 1, characterized in that: An air inlet (2) and an air outlet (5) are respectively provided at two ends of the outer shell (1); a fan frame (8) is fixedly connected to the inner wall of the outer shell (1); and a uniform-speed fan (9) is fixedly connected to the inner wall of the fan frame (8).

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