Fresh air filtering device for clean room

Abstract

The invention belongs to the technical field of fresh air filtering, and discloses a fresh air filtering device for a clean room, the fresh air filtering device comprises a frame, supporting seats are fixedly connected to the two symmetrical sides of the top of the frame, a driving shaft is rotatably arranged between the two supporting seats, and a control motor is fixedly connected to one end of the driving shaft; the control motor is fixedly connected with the supporting seat, the driving shaft is sleeved with a filter screen in a rolling mode, a cleaning mechanism used for cleaning dust in filter holes of the filter screen is arranged on the frame, and a cleaning room body is arranged on one side of the frame. And therefore, impurities in filter holes in the surface of the filter screen can be conveniently and rapidly cleaned, and the problems that when an existing fresh air filter device is used for a long time, tiny impurities are likely to be generated and adhere to the filter holes of the filter screen, cleaning is not convenient for workers, and the filter screen is likely to be blocked are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of fresh air filtering, and in particular is a fresh air filtering device for a clean room. Background Art

[0002] A clean room refers to a well-enclosed space where air cleanliness, temperature, humidity, pressure, noise and other parameters are controlled as needed. A clean room needs to be equipped with a fresh air filter for internal ventilation to ensure that the internal air meets the standards. A fresh air filter device refers to a ventilation system that uses a combination of a fresh air unit and a ventilation duct to filter and bring in fresh air from the outside and discharge the dirty air from the room.

[0003] For example, the utility model with the publication number CN213778149U discloses a fresh air filter device for a clean room, including a body, a filter chamber is arranged inside the body, a fan is arranged in the middle of the filter chamber, a filter plate is arranged on the left side of the filter chamber, a first filter screen is arranged on the left side of the filter plate, a second filter screen is arranged on the right side of the first filter screen, a fixed structure is arranged inside the outer side of the filter plate, an air outlet is arranged on the left side of the body, a limiting groove is arranged on the upper end of the air outlet, a central axis is arranged in the middle of the air outlet, an adjusting disk is arranged on the outer side of the left end of the central axis, an adjusting structure is arranged on the upper end of the adjusting disk, and an adjusting slot is arranged inside the adjusting disk. The adjusting spring pushes the bottom plate to the right to release the air outlet to the maximum. When the air intake needs to be reduced, the pull block is pulled to the left to reduce the overlap between the adjusting slot and the air outlet.

[0004] When the above device is used for a long time, some fine impurities will adhere to the filter holes of the filter screen, which requires manual cleaning by personnel. However, since the impurities are on the inner wall of the filter holes, it is inconvenient for personnel to clean and the efficiency is not good. At the same time, the existing fresh air filter device for clean room usually needs to be installed through an angle iron bracket. The installation structure is relatively complicated and relatively unstable, and it is relatively time-consuming to install. In addition, the main body is generally installed outdoors. If encountering strong winds, there will be safety hazards and other problems, which is not conducive to improving installation efficiency.

[0005] Therefore, a fresh air filtering device for a clean room is proposed to solve the problems raised by the background technology. Summary of the invention

[0006] In order to solve the problem raised in the above background technology that the existing fresh air filtering device is prone to produce fine impurities adhering to the filter holes of the filter when used for a long time, which is inconvenient for staff to clean and easily causes the filter to be blocked, the present invention provides a fresh air filtering device for a clean room.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a fresh air filtering device for a clean room, comprising a frame, support seats are fixedly connected to both sides of the top of the frame symmetrically, a driving shaft is rotatably arranged between the two support seats, a control motor is fixedly connected to one end of the driving shaft, the control motor is fixedly connected to the support seat, a filter screen is arranged on the outer rolling sleeve of the driving shaft, a cleaning mechanism for cleaning dust in the filter screen holes is arranged on the frame, and a clean room body is arranged on one side of the frame;

[0008] The cleaning mechanism includes a cleaning block, an adjusting block is fixedly connected to the top of the cleaning block, a limiting rod is fixedly connected to the top of the adjusting block, two symmetrical fixed plates are fixedly connected to the surface of the frame, the adjusting block is located between the two fixed plates and hinged to the fixed plates, and a driving component for driving the cleaning block to reciprocate and approach the filter is provided at the top position of the fixed plate of the frame.

[0009] Preferably, a plurality of cleaning needles arranged in a linear array are fixedly connected to the cleaning block, and the cleaning needles reciprocate through the filter screen.

[0010] Preferably, the driving assembly includes a driving sleeve, a threaded groove is formed on the driving sleeve, the limiting rod passes through the threaded groove, an adjusting motor is fixedly provided on the surface of the driving sleeve, a fixing rod is fixedly connected to the side of the driving sleeve away from the adjusting motor, a fixing frame is rotatably connected to the outer wall of the fixing rod, the bottom of the fixing frame is fixedly connected to the frame, and the cross-section of the limiting rod is T-shaped and is clamped with the threaded groove.

[0011] Preferably, slots are provided at the top and bottom of the frame, the filter screen slides along the inside of the slots, and the bottom of the frame is arc-shaped and fits the surface of the filter screen.

[0012] Preferably, scrapers are fixedly connected to both symmetrical sides of the surface of the frame, the scraper has a triangular shape on one side close to the filter screen and contacts the surface of the filter screen, and the scraper is made of rubber.

[0013] Preferably, collecting grooves are provided on both symmetrical sides of the bottom of the frame, the two collecting grooves are connected to the bottom notch, and a collecting box is fixedly connected to the bottom of the frame at positions corresponding to the collecting grooves.

[0014] Preferably, the top of the collection box is in an open state and communicated with the collection trough, and a pull-out box is slidably connected to the interior of the collection box.

[0015] Preferably, a slot is provided on the clean room body, the slot is L-shaped, and a connecting mechanism is provided on a side of the frame close to the clean room body.

[0016] Preferably, the connecting mechanism includes multiple groups of connecting plates, each of which is hinged with a card plate, the card plate is L-shaped and is engaged with a card slot, a spring is fixedly connected to the bottom of the card plate close to the frame, a rectangular plate is fixedly connected to the bottom of the spring, the rectangular plate is fixedly connected to the frame, a limiting plate is provided on the top of the card plate, and the limiting plate is fixedly connected to the frame.

[0017] Preferably, a method for installing a fresh air filter device for a clean room includes positioning and fixing, sealing, installing the filter, and checking and debugging;

[0018] S1. Positioning and fixing: Determine the installation position of the fresh air filter device according to the design drawings, and use appropriate fixings to fix the filter frame at the predetermined position;

[0019] S2. Sealing treatment: According to the sealing method between the filter and the frame, such as sealing gasket, self-adhesive, negative pressure sealing, liquid tank sealing, the sealing material is evenly pasted or applied to the filter frame and frame surface to ensure that the sealing material is not damaged or has no bubbles, and the sealing effect required by the design is achieved;

[0020] S3. Install the filter: Handle it with care during transportation to avoid severe vibration and collision. Install the filter correctly into the frame according to the airflow direction indicated by the arrow. For filters with liquid tank seal, ensure that the filter is immersed in the sealing tank and the sealing liquid in the tank reaches the designed depth.

[0021] S4. Inspection and debugging: After installation, perform an appearance inspection on the filter to ensure that there is no damage or looseness. Turn on the purification air conditioning system and conduct a trial run to check the working condition and sealing effect of the filter. Adjust the resistance of the filter as needed to ensure that the resistance difference of each filter is within the specified range.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention facilitates the rapid cleaning of impurities in the filter holes on the surface of the filter screen by setting the coordination of structures such as the cleaning block, the adjusting block and the driving assembly. The driving shaft is driven to rotate by starting the control motor, thereby driving the filter screen sleeved on the surface to rotate synchronously. During the rotation process, the driving sleeve is driven to rotate by the adjusting motor, thereby causing the internal fixing rod to press the threaded groove to move, thereby driving the adjusting block hinged to the fixing plate to rotate back and forth, so that the bottom cleaning block is close to or away from the filter screen, thereby driving the cleaning needle on the surface of the cleaning block to reciprocate and clean the filter holes on the surface of the filter screen. The filter screen at different positions is cleaned during the continuous movement of the filter screen, thereby achieving rapid cleaning of the filter holes on the surface of the filter screen, improving the filtering effect, and solving the problem that the existing fresh air filter device is prone to fine impurities adhering to the filter holes of the filter screen when used for a long time, which is inconvenient for staff to clean and easily causes the filter screen to be blocked.

[0024] The present invention facilitates the centralized collection of cleaned impurities and dust by providing the cooperation of structures such as a scraper, a collection box and a pull-out box. By utilizing the cooperation of the scraper and the collection box, part of the impurities cleaned by the cleaning needle directly fall into the pull-out box in the bottom collection box, and part of the impurities remain on the surface of the filter. The filter moves, and the scraper is used to closely adhere to the filter to scrape off the impurities on the surface of the filter, so that they fall into the bottom pull-out box under the influence of gravity for unified collection, thereby completing the entire use.

[0025] The present invention facilitates the rapid installation of the frame and the clean room body by arranging the coordination of structures such as the connecting plate, the spring, the card plate and the card slot, and realizes the rapid installation between the frame and the clean room body by utilizing the connecting mechanism. The card plate is manually bent downward, and the spring is in a compressed state, so that the card plate is slidably inserted into the card slot. When the protruding end of the card plate moves to the side with a larger cross-section in the card slot, the spring resets and squeezes the card plate to reset it. Due to the limitation of the limiting plate, the card plate is in a horizontal state. At this time, the card plate is fixedly connected with the card slot, and the rapid installation of the frame and the clean room body is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0030] Figure 5 It is a schematic diagram of the cooperation between the drive shaft and the filter screen of the present invention;

[0031] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0032] Figure 7 It is a schematic diagram of the cooperation between the cleaning block and the driving assembly of the present invention;

[0033] Figure 8 It is a schematic diagram of the cooperation between the scraper and the collection box of the present invention.

[0034] In the figure: 1. frame; 11. support seat; 12. drive shaft; 13. control motor; 14. notch; 15. collection tank; 2. filter; 3. cleaning mechanism; 31. cleaning block; 311. cleaning needle; 32. adjustment block; 33. limit rod; 34. fixed plate; 35. drive assembly; 351. drive sleeve; 3511. threaded groove; 352. adjustment motor; 353. fixed rod; 36. fixed frame; 4. scraper; 5. collection box; 51. pull-out box; 6. clean room body; 61. slot; 7. connecting mechanism; 71. connecting plate; 72. card plate; 73. spring; 74. rectangular plate; 75. limit plate. DETAILED DESCRIPTION

[0035] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0036] like Figures 1 to 8As shown, the present invention provides a fresh air filtering device for a clean room, comprising a frame 1, support seats 11 are fixedly connected to both sides of the top symmetrically of the frame 1, a driving shaft 12 is rotatably arranged between the two support seats 11, one end of the driving shaft 12 is fixedly connected to a control motor 13, the control motor 13 is fixedly connected to the support seat 11, an outer rolling sleeve of the driving shaft 12 is provided with a filter screen 2, a cleaning mechanism 3 for cleaning dust in the filter holes of the filter screen 2 is arranged on the frame 1, and a clean room body 6 is arranged on one side of the frame 1; the cleaning mechanism 3 comprises a cleaning block 31, an adjusting block 32 is fixedly connected to the top of the cleaning block 31, a limiting rod 33 is fixedly connected to the top of the adjusting block 32, two symmetrical fixing plates 34 are fixedly connected to the surface of the frame 1, the adjusting block 32 is located between the two fixing plates 34 and is fixed to the The fixing plate 34 is hinged, and the frame 1 is provided with a driving assembly 35 at the top position of the fixing plate 34 for driving the cleaning block 31 to reciprocate and approach the filter screen 2. A plurality of cleaning needles 311 arranged in a linear array are fixedly connected to the cleaning block 31, and the cleaning needles 311 reciprocate through the filter screen 2. The driving assembly 35 includes a driving sleeve 351, and a threaded groove 3511 is provided on the driving sleeve 351. The limiting rod 33 passes through the threaded groove 3511. An adjusting motor 352 is fixedly provided on the surface of the driving sleeve 351. A fixing rod 353 is fixedly connected to the side of the driving sleeve 351 away from the adjusting motor 352. The outer wall of the fixing rod 353 is rotatably connected to a fixing frame 36. The bottom of the fixing frame 36 is fixedly connected to the frame 1. The cross-section of the limiting rod 33 is T-shaped and is engaged with the threaded groove 3511.

[0037] The above scheme is adopted: by using the cleaning mechanism 3 to quickly clean the impurities on the surface of the filter 2, so as to avoid the clogging of the filter 2 and the incomplete filtration of the clean room. During use, when the filter 2 needs to be cleaned, the driving shaft 12 is first driven to rotate by starting the control motor 13, and then the filter 2 mounted on the surface is driven to rotate synchronously. During the rotation process, the driving assembly 35 is used to cooperate with the adjustment motor 352 to drive the driving sleeve 351 to rotate, so that the internal fixing rod 353 presses the thread groove 3511 to move, thereby driving the adjustment block 32 hinged to the fixing plate 34 to reciprocate, so that the bottom cleaning block 31 is close to or away from the filter 2, and then the cleaning needle 311 on the surface of the cleaning block 31 is driven to reciprocate to clean the filter holes on the surface of the filter 2. During the continuous movement of the filter 2, the filter 2 at different positions is cleaned, thereby realizing the rapid cleaning of the filter holes on the surface of the filter 2 and improving the filtering effect.

[0038] like Figure 8As shown, the top and bottom of the frame 1 are provided with slots 14, the filter 2 slides inside the slots 14, the bottom of the frame 1 is in an arc shape and fits with the surface of the filter 2, the surface of the frame 1 is symmetrically connected with scrapers 4 on both sides, the side of the scraper 4 close to the filter 2 is triangular and contacts with the surface of the filter 2, the scraper 4 is made of rubber, the bottom of the frame 1 is symmetrically provided with collecting grooves 15 on both sides, the two collecting grooves 15 are connected with the bottom slots 14, the bottom of the frame 1 is fixedly connected with a collecting box 5 at the corresponding position of the collecting groove 15, the top of the collecting box 5 is in an open state and connected with the collecting groove 15, and the inside of the collecting box 5 is slidably connected with a pull-out box 51.

[0039] The above scheme is adopted: by using the scraper 4 and the collection box 5 in combination, part of the impurities cleaned by the cleaning needle 311 directly fall into the pull-out box 51 in the bottom collection box 5, and part of them remain on the surface of the filter 2. The filter 2 moves, and the scraper 4 is used to close the filter 2 to scrape the impurities on the surface of the filter 2 so that they fall into the bottom pull-out box 51 under the influence of gravity for unified collection, thereby completing the entire use.

[0040] like Figure 6 As shown, a card slot 61 is provided on the clean room body 6, and the card slot 61 is L-shaped. A connecting mechanism 7 is provided on the side of the frame 1 close to the clean room body 6. The connecting mechanism 7 includes multiple groups of connecting plates 71, and the multiple groups of connecting plates 71 are hinged with card plates 72. The card plates 72 are L-shaped and are connected to the card slot 61. A spring 73 is fixedly connected to the bottom of the card plate 72 close to the side of the frame 1, and a rectangular plate 74 is fixedly connected to the bottom of the spring 73. The rectangular plate 74 is fixedly connected to the frame 1, and a limit plate 75 is provided on the top of the card plate 72, and the limit plate 75 is fixedly connected to the frame 1.

[0041] The above scheme is adopted: the connection mechanism 7 is used to realize the quick installation between the frame 1 and the clean room body 6, and the card plate 72 is manually bent downward. At this time, the spring 73 is in a compressed state, so that the card plate 72 is slidably inserted into the card slot 61. When the protruding end of the card plate 72 moves to the side with a larger cross-section in the card slot 61, the spring 73 resets and squeezes the card plate 72 to reset it. Due to the limitation of the limiting plate 75, the card plate 72 is in a horizontal state. At this time, the card plate 72 is fixedly connected with the card slot 61, completing the quick installation of the frame 1 and the clean room body 6.

[0042] A method for installing a fresh air filter device for a clean room, comprising positioning and fixing, sealing, installing a filter, and checking and debugging;

[0043] S1. Positioning and fixing: Determine the installation position of the fresh air filter device according to the design drawings, and use appropriate fixings to fix the filter frame at the predetermined position;

[0044] S2. Sealing treatment: According to the sealing method between the filter and the frame, such as sealing gasket, self-adhesive, negative pressure sealing, liquid tank sealing, the sealing material is evenly pasted or applied to the filter frame and frame surface to ensure that the sealing material is not damaged or has no bubbles, and the sealing effect required by the design is achieved;

[0045] S3. Install the filter: Handle it with care during transportation to avoid severe vibration and collision. Install the filter correctly into the frame according to the airflow direction indicated by the arrow. For filters with liquid tank seal, ensure that the filter is immersed in the sealing tank and the sealing liquid in the tank reaches the designed depth.

[0046] S4. Inspection and debugging: After installation, perform an appearance inspection on the filter to ensure that there is no damage or looseness. Turn on the purification air conditioning system and conduct a trial run to check the working condition and sealing effect of the filter. Adjust the resistance of the filter as needed to ensure that the resistance difference of each filter is within the specified range.

[0047] The working principle and use process of the present invention are as follows: when using the device, in order to avoid clogging of the filter 2 and causing incomplete filtration in the clean room, the filter 2 can be quickly cleaned by utilizing the cleaning mechanism 3. When the filter 2 needs to be cleaned, the driving shaft 12 is first driven to rotate by controlling the motor 13, and the filter 2 mounted on the surface is driven to rotate synchronously. During the rotation process, the bottom cleaning block 31 is made to approach or move away from the filter 2 by utilizing the driving assembly 35, thereby driving the cleaning needle 311 on the surface of the cleaning block 31 to reciprocate and clean the filter holes on the surface of the filter 2. During the continuous movement of the filter 2, the filter 2 at different positions is cleaned, thereby realizing rapid cleaning of the filter holes on the surface of the filter 2. During the cleaning process, part of the impurities cleaned by the cleaning needle 311 directly fall into the pull-out box 51 in the bottom collection box 5, and part of them remain on the surface of the filter 2. The impurities on the surface of the filter 2 are scraped off by the scraper 4 so that they fall into the bottom pull-out box 51 under the influence of gravity for unified collection.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] 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 fresh air filtering device for a clean room, comprising a frame (1), characterized in that: The top of the frame (1) is symmetrically and fixedly connected to support seats (11) on both sides, a drive shaft (12) is rotatably arranged between the two support seats (11), one end of the drive shaft (12) is fixedly connected to a control motor (13), the control motor (13) is fixedly connected to the support seat (11), the outer rolling sleeve of the drive shaft (12) is provided with a filter (2), the frame (1) is provided with a cleaning mechanism (3) for cleaning dust in the filter holes of the filter (2), and a clean room body (6) is arranged on one side of the frame (1); The cleaning mechanism (3) comprises a cleaning block (31), the top of the cleaning block (31) is fixedly connected to an adjusting block (32), the top of the adjusting block (32) is fixedly connected to a limiting rod (33), the surface of the frame (1) is fixedly connected to two symmetrical fixing plates (34), the adjusting block (32) is located between the two fixing plates (34) and is hinged to the fixing plates (34), and the frame (1) is provided with a driving component (35) at the top of the fixing plates (34) for driving the cleaning block (31) to reciprocate and approach the filter screen (2).

2. The fresh air filtering device for a clean room according to claim 1, characterized in that: A plurality of cleaning needles (311) arranged in a linear array are fixedly connected to the cleaning block (31), and the cleaning needles (311) reciprocate through the filter screen (2).

3. The fresh air filtering device for a clean room according to claim 2, characterized in that: The driving assembly (35) comprises a driving sleeve (351), a thread groove (3511) is formed on the driving sleeve (351), the limiting rod (33) penetrates the thread groove (3511), an adjusting motor (352) is fixedly arranged on the surface of the driving sleeve (351), a fixing rod (353) is fixedly connected to a side of the driving sleeve (351) away from the adjusting motor (352), an outer wall of the fixing rod (353) is rotatably connected to a fixing frame (36), the bottom of the fixing frame (36) is fixedly connected to the frame (1), and the cross section of the limiting rod (33) is T-shaped and is engaged with the thread groove (3511).

4. The fresh air filtering device for a clean room according to claim 1, characterized in that: The top and bottom of the frame (1) are both provided with slots (14), the filter screen (2) slides along the inside of the slots (14), and the bottom of the frame (1) is in an arc shape and fits with the surface of the filter screen (2).

5. The fresh air filtering device for a clean room according to claim 1, characterized in that: Scrapers (4) are fixedly connected to both symmetrical sides of the surface of the frame (1); the side of the scraper (4) close to the filter screen (2) is triangular in shape and contacts the surface of the filter screen (2); the scraper (4) is made of rubber.

6. The fresh air filtering device for a clean room according to claim 1, characterized in that: The bottom of the frame (1) is symmetrically provided with collecting grooves (15) on both sides, the two collecting grooves (15) are connected to the bottom notch (14), and the bottom of the frame (1) is fixedly connected with a collecting box (5) at a position corresponding to the collecting grooves (15).

7. The fresh air filtering device for a clean room according to claim 6, characterized in that: The top of the collection box (5) is in an open state and is connected to the collection tank (15), and a drawer box (51) is slidably connected inside the collection box (5).

8. The fresh air filtering device for a clean room according to claim 7, characterized in that: The clean room body (6) is provided with a card slot (61), the card slot (61) is L-shaped, and a connecting mechanism (7) is provided on a side of the frame (1) close to the clean room body (6).

9. The fresh air filtering device for a clean room according to claim 8, characterized in that: The connection mechanism (7) comprises a plurality of groups of connection plates (71), each of which is hingedly connected with a clamping plate (72), the clamping plate (72) being L-shaped and clamped with the clamping groove (61), a spring (73) being fixedly connected to the bottom of the clamping plate (72) on a side close to the frame (1), and a rectangular plate (74) being fixedly connected to the bottom of the spring (73).

10. The fresh air filtering device for a clean room according to claim 9, characterized in that: The rectangular plate (74) is fixedly connected to the frame (1); a limiting plate (75) is provided on the top of the clamping plate (72); and the limiting plate (75) is fixedly connected to the frame (1).

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