Clean room air supply system

Abstract

The application discloses a clean room air supply system, which comprises a shell, an air pipe module, an air treatment module and a control module, the air treatment module comprises a coarse filter and a medium filter arranged on an air supply fan and a high-efficiency filter arranged at an air supply opening of the clean room; the air treatment module further comprises a standby device for realizing non-stop replacement of the high-efficiency filter, the standby device comprises a standby pipe, a valve mechanism, a detection mechanism for detecting dust in air, a rechecking mechanism for rechecking dust and a standby filter mechanism; one end of the standby pipe is arranged in front of the high-efficiency filter of the shell, and the other end is arranged to be connected to the air supply opening of the clean room, and the valve mechanism is used for realizing normal air supply of the standby pipe. The application has the effects of intelligently detecting whether dust exists or not, and further realizing non-stop replacement of the high-efficiency filter.

Description

Technical Field

[0001] This application relates to the field of cleanroom air supply technology, and in particular to a cleanroom air supply system. Background Technology

[0002] Currently, a clean operating room refers to a specially designed room that removes pollutants such as microparticles, harmful air, and bacteria from the air within a certain space, and controls the indoor temperature, cleanliness, indoor pressure, airflow speed and distribution, noise and vibration, lighting, and static electricity within a certain required range.

[0003] Currently, most designs incorporate multiple filtration modules, such as primary, intermediate, and advanced filtration modules. The primary and intermediate modules are located within the air conditioning unit, while the advanced module is positioned at the terminal air outlet. If a problem occurs with the corresponding filtration module during air delivery, it will affect the subsequent air filtration effect, thus impacting the air quality that ultimately enters the clean operating room.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: Currently, when a problem occurs with the filter module, a pressure sensor is used to judge the pressure inside the pipe. If the pressure increases, it proves that there is a problem with the corresponding filter module. However, it cannot determine whether there is dust in the subsequent air outlet. Therefore, it is urgent to determine whether there is dust. Summary of the Invention

[0005] To address the difficulty in determining the presence of dust, this application provides a cleanroom air supply system.

[0006] The cleanroom air supply system provided in this application adopts the following technical solution:

[0007] A cleanroom air supply system includes a housing, a duct module, an air handling module, and a control module. The air handling module includes a coarse filter and a medium-efficiency filter mounted on a blower, and a high-efficiency filter mounted at the cleanroom air outlet.

[0008] The air handling module also includes a backup device for replacing the high-efficiency filter without shutting down the system. The backup device includes a backup pipe, a valve mechanism, a detection mechanism for detecting dust in the air, a verification mechanism for re-inspecting the dust, and a backup filter mechanism.

[0009] One end of the backup pipe is located in front of the high-efficiency filter on the housing, and the other end is connected to the air outlet of the clean room. The valve mechanism is used to enable the backup pipe to supply air normally.

[0010] Optionally, the detection mechanism includes a detection frame disposed in the spare pipeline, a non-woven fabric movably disposed on the detection frame, a traction component for pulling the non-woven fabric, a shaking component for shaking the non-woven fabric, a viewing component for observing dust conditions through the Tyndall effect, and an adsorption component for adsorbing dust, wherein the non-woven fabric filters dust and is in a taut state.

[0011] Optionally, the shaking component includes an upper plate elastically disposed on the detection frame, a lower plate for adsorbing the upper plate, a first electromagnet disposed on the lower plate, and a reciprocating part for realizing the reciprocating motion of the lower plate. When the lower plate is adsorbed with the upper plate, the nonwoven fabric is in a relaxed state.

[0012] Optionally, the reciprocating part includes a spring, a slide rod, a reciprocating electric push rod, and a reciprocating electromagnet. The detection frame is provided with a through hole for the slide rod to slide. The slide rod is fixedly connected to the upper surface of the upper plate. The spring is sleeved on the slide rod, and its two ends are fixedly connected to the detection frame and the upper plate, respectively. The reciprocating electric push rod is fixed on the detection frame and is used to control the movement of the reciprocating electromagnet. The reciprocating electromagnet attracts the lower plate.

[0013] Optionally, the viewing component includes a light source and a camera, the light source and the camera being respectively disposed on both sides of the detection frame, and the camera shooting direction being perpendicular to the direction of the light emitted by the light source.

[0014] Optionally, the adsorption assembly includes a rotating rod rotatably mounted on the detection frame, an adsorption rod hinged to the rotating rod, a dust removal part movably mounted inside the adsorption rod, and a first impeller. The impeller is pulsatorically connected to the rotating rod, and the axis of the first impeller is along the air supply direction. The rotating rod is equipped with an adsorption motor for controlling the rotation of the adsorption rod.

[0015] Optionally, the dust removal unit includes a dust removal roller, a dust removal motor for controlling the rotation of the dust removal roller, electrostatic dust removal paper wound around the dust removal roller, a gravity rod, and a second electromagnet. The adsorption rod is provided with a placement cavity, the dust removal roller rotates in the placement cavity, one end of the dust removal paper is fixedly connected to the outer peripheral wall of the dust removal roller, and the other end is fixedly connected to the gravity rod. The end of the gravity rod near the rotating rod is fixedly connected to the second electromagnet, and the second electromagnet is attracted to the rotating rod.

[0016] Optionally, the verification mechanism includes a verification box disposed on the detection frame, an adhesive block movably disposed within the verification box, a drive assembly for controlling the movement of the adhesive block, a marking paper for the adhesive block to mark dust, a cleaning component for cleaning dust from the adhesive block, and a color sensor. The marking paper is movably disposed within the verification box, the color sensor is facing the marking paper, and the color sensor is electrically connected to a buzzer.

[0017] Optionally, the backup filter mechanism includes a backup frame rotatably disposed within the backup pipe, a backup filter disposed on the backup frame, a protective component for protecting the backup filter, and a power component for controlling the rotation of the backup frame. In the initial state, the plane of the backup filter is along the air supply direction.

[0018] Optionally, the power assembly includes a second impeller, a first bevel gear, a second bevel gear meshing with the first bevel gear, and an adjustment part for ensuring that the spare frame rotates to a designated position within a specified time. The second bevel gear is coaxially fixed with the spare frame, the axis of the second impeller is along the air supply direction, and the first bevel gear is in the same direction as the second impeller.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. After the non-woven fabric filters the air for a period of time, it needs to be released a certain distance until it is in a relaxed state. At this time, the lower plate is moved towards the upper plate. After the electromagnet on the lower plate attracts the upper plate, the non-woven fabric is quickly pulled towards the lower plate. The spring is in a stretched and deformed state. Control the reciprocating electromagnet to release the lower plate. Under the elastic force of the spring, the lower plate is quickly launched towards the upper plate. At this time, along the position where the upper and lower plates clamp the non-woven fabric, the non-woven fabric begins to fluctuate, thus achieving a shaking effect on the non-woven fabric. During the shaking process, the dust particles adhering to the non-woven fabric are shaken off. Turn on the light source. If there is a lot of dust, the dust will undergo the Tyndall effect under the illumination of the light source. The camera can take pictures of the dust, thus determining the amount of dust filtered on the non-woven fabric.

[0021] 2. When the non-woven fabric needs to be checked, the clamping control of the upper and lower plates on the non-woven fabric needs to be released. At the same time, the non-woven fabric needs to be kept taut. Control the checking frame to slide out of the checking box, and slide the adhesive block towards the non-woven fabric until the end of the adhesive block abuts against the non-woven fabric. Since the adhesive block has the effect of adsorbing dust, after the adhesive block comes into contact with the non-woven fabric, it can adsorb the dust particles that are not easy to shake off. Then pull the checking frame back into the composite box. During the movement, control the end of the adhesive block to contact the marking paper, and control the marking paper to move until the position of the dust adhering to the marking paper moves to the position of the color sensor. The color sensor identifies the dust on the marking paper. If there is indeed dust on the marking paper, it proves that there are indeed dust particles on the non-woven fabric. Therefore, it proves that there is dust in the air supply, which means that there is a filtration problem with the HEPA filter, and the HEPA filter needs to be replaced.

[0022] 3. First, guide rollers and guide ropes are needed to pull up the protective cover until it reaches the top of the spare frame. The size of the protective cover should be larger than the size of the spare frame. At this point, the spare pipe and air supply pipe can be closed, and the regulating pipe can be opened. The regulating pipe is directly opposite the blades of the second impeller. The second impeller controls the first and second bevel gears to engage, which allows the spare frame to start rotating. At the same time, the regulating electromagnet separates from the regulating block. The regulating block moves towards the initial position under the action of the elastic element, and the proximity switch starts to rotate upward from the initial position. When the regulating block moves to the initial position and the proximity switch just rotates to the position of contact with the regulating block, the proximity switch trigger indicator light will illuminate. When the spare frame rotates to a position perpendicular to the air supply direction, the spare frame needs to be fixed by suction, and the regulating pipe also needs to be closed. The spare pipe is then activated to start air supply. At the same time, the non-woven fabric needs to be pulled away to pull the traction rope into the range of the spare pipe. The spare filter is now officially in operation, and the operator can then replace the HEPA filter. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the testing institution in the embodiments of this application;

[0025] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle;

[0026] Figure 4 yes Figure 1 Enlarged schematic diagram of part B;

[0027] Figure 5 This is a schematic diagram of the review mechanism in the embodiments of this application.

[0028] Reference numerals: 1. Housing; 2. Coarse filter; 3. Medium filter; 4. High-efficiency filter; 5. Spare pipe; 6. Detection frame; 7. Non-woven fabric; 8. Traction rope; 9. Traction roller; 10. Upper plate; 11. Lower plate; 12. First electromagnet; 13. Spring; 14. Slide rod; 15. Reciprocating electric actuator; 16. Reciprocating electromagnet; 17. Through hole; 18. Light source; 19. Camera; 20. Rotating rod; 21. Adsorption rod; 22. First impeller; 23. Dust removal motor; 24. Electrostatic dust removal paper; 25. Gravity rod; 26. Second electromagnet 27. Magnet; 28. Placement chamber; 29. ​​Verification box; 30. Adhesive block; 31. Marking paper; 32. Cleaning component; 33. Color sensor; 34. Spare rack; 35. Spare filter; 36. Second impeller; 37. First bevel gear; 38. Second bevel gear; 39. Adjusting pipe; 40. Adjusting valve; 41. Adjusting block; 42. Elastic component; 43. Adjusting electromagnet; 44. Adjusting electric actuator; 45. Proximity switch; 46. Adjusting groove; 47. Protective cover; 48. Guide roller; 49. Guide rope; 50. Guide motor; 61. Spare box. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] This application discloses a cleanroom air supply system. (Refer to...) Figures 1-5A cleanroom air supply system includes a housing 1, a duct module, an air handling module, and a control module. The air handling module includes a coarse filter 2 and a medium-efficiency filter 3 mounted on a blower, and a high-efficiency filter 4 mounted at the cleanroom air outlet. The duct module includes supply air ducts, return air ducts, fresh air ducts, and exhaust air ducts. These ducts are responsible for delivering treated air to the operating room and exhausting polluted air from the room. The coarse filter 2 is mainly used to filter larger dust particles, such as dust particles with a diameter of 10-100 micrometers. As the first line of defense in the air purification system, it can effectively prevent large particles in the atmosphere from entering the system, thereby protecting the subsequent medium-efficiency and high-efficiency filters 4 and extending their service life. As the first line of defense in the air purification system, the coarse filter effectively prevents large-diameter particles from entering the system, thus protecting the subsequent medium-efficiency and high-efficiency filters and extending their service life. The coarse filter 2 is mainly used to filter larger dust particles, such as those between 10 and 100 micrometers in size. As the first line of defense in the air purification system, it effectively prevents large-diameter particles from entering the system, thus protecting the subsequent medium-efficiency and high-efficiency filters and extending their service life.

[0031] The air handling module also includes a backup device for replacing the HEPA filter 4 without shutting down the system. The backup device includes a backup pipe 5, a valve mechanism, a detection mechanism for detecting dust in the air, a verification mechanism for re-inspecting the dust, and a backup filter mechanism. One end of the backup pipe 5 is located in front of the HEPA filter 4 in the housing 1, and the other end is connected to the air outlet of the clean room. The valve mechanism is used to ensure normal air supply through the backup pipe 5. The valve mechanism includes multiple solenoid valves, which mainly ensure normal air supply through the air supply pipe and, when air supply through the backup pipe 5 is required, guide the air supply from the section of the air supply pipe containing the HEPA filter 4 into the backup pipe 5. The backup filter mechanism in the backup pipe 5 continues to operate, while the HEPA filter 4 in the air supply pipe can be repaired or replaced, thus achieving the effect of replacing the HEPA filter 4 without shutting down the system.

[0032] The testing mechanism includes a testing frame 6 installed within the backup pipe 5, a non-woven fabric 7 movably mounted on the testing frame 6, a traction component for pulling the non-woven fabric 7, a shaking component for shaking the non-woven fabric 7, a viewing component for observing dust conditions through the Tyndall effect, and an adsorption component for adsorbing dust. The non-woven fabric 7 filters dust and is in a taut state. The plane of the testing frame 6 is perpendicular to the air supply direction. The non-woven fabric 7 can achieve the dust filtration effect of the high-efficiency filter 4. Therefore, if dust enters the backup pipe 5 due to a problem with the high-efficiency filter 4, it can be filtered by the non-woven fabric 7. The traction component includes two traction rollers 9, two traction motors, and multiple traction ropes 8. Multiple non-woven fabrics 7 can also be installed here, with the non-woven fabric 7 and traction ropes 8 spaced apart. The area of ​​the non-woven fabric 7 is larger than the area of ​​the backup pipe 5, thus ensuring that the non-woven fabric 7 filters dust during the air supply process. The traction ropes 8 at both ends are fixedly connected to the periphery of the traction rollers 9, and the testing frame 6 is provided with a traction cavity for placing the traction rollers 9.

[0033] The shaking assembly includes an upper plate 10 elastically mounted on the testing frame 6, a lower plate 11 for adsorbing the upper plate 10, a first electromagnet 12 mounted on the lower plate 11, and a reciprocating part for realizing the reciprocating motion of the lower plate 11. When the lower plate 11 is adsorbed by the upper plate 10, the nonwoven fabric 7 is in a relaxed state. The reciprocating part includes a spring 13, a slide rod 14, a reciprocating electric push rod 15, and a reciprocating electromagnet 16. The testing frame 6 is provided with a through hole 17 for sliding the slide rod 14. The slide rod 14 is fixedly connected to the upper surface of the upper plate 10. The spring 13 is sleeved on the slide rod 14, and its two ends are fixedly connected to the testing frame 6 and the upper plate 10, respectively. The reciprocating electric push rod 15 is fixed on the testing frame 6 and is used to control the movement of the reciprocating electromagnet 16. The reciprocating electromagnet 16 adsorbs the lower plate 11. The upper plate 10 is located on the air-drawing side of the nonwoven fabric 7, and the lower plate 11... On the other side of the nonwoven fabric 7, the first electromagnet 12 attracts the lower plate 11. After the nonwoven fabric 7 filters the air for a period of time, it needs to be released a certain distance until the nonwoven fabric 7 is in a relaxed state. At this time, the lower plate 11 is moved towards the upper plate 10. After the electromagnet on the lower plate 11 is attracted to the upper plate 10, the nonwoven fabric 7 is quickly pulled towards the lower plate 11. The spring 13 is in a stretched and deformed state. The reciprocating electromagnet 16 is controlled to release the lower plate 11. Under the elastic force of the spring 13, the lower plate 11 is quickly ejected towards the upper plate 10. At this time, along the position where the upper plate 10 and the lower plate 11 clamp the nonwoven fabric 7, the nonwoven fabric 7 begins to fluctuate, thereby achieving the shaking effect of the nonwoven fabric 7. During the shaking process, the dust particles adhering to the nonwoven fabric 7 are shaken off.

[0034] The inspection component includes a light source 18 and a camera 19. The light source 18 and the camera 19 are respectively set on both sides of the inspection frame 6. The shooting direction of the camera 19 is perpendicular to the direction of the light emitted by the light source 18. When the dust particles on the non-woven fabric 7 are shaken off, the light source 18 is turned on. If there is a lot of dust, the dust will undergo the Tyndall effect under the illumination of the light source 18. The camera 19 can take pictures of the dust, and thus determine the dust filtering situation on the non-woven fabric 7. In this embodiment, in order to protect the camera 19 and the light source 18, both the light source 18 and the camera 19 are installed in a transparent box.

[0035] If the camera 19 observes that there is not much dust in the spare tube 5, the dust particles may be too large or of medium quality to adhere to the nonwoven fabric 7 and be difficult to shake off. Therefore, a verification is required. The verification mechanism includes a verification box 28 set on the detection frame 6, an adhesion block 29 movably set in the verification box 28, a drive component for controlling the movement of the adhesion block 29, a marking paper 30 for marking the dust on the adhesion block 29, a cleaning component 31 for cleaning the dust on the adhesion block 29, and a color sensor 32. The marking paper 30 is movably set in the verification box 28, and the color sensor 32 is directly opposite the marking paper 30. The color sensor 32 is electrically connected to a buzzer. In this embodiment, the adhesion block 29 can be made of materials such as rubber or silicone, preferably rubber. The adhesion block 29 moves along the movement direction of the nonwoven fabric 7 and can also move perpendicular to the nonwoven fabric 7. The directional movement is driven by a verification frame and a sliding plate. The verification frame is slidably connected within the verification box 28 along the movement direction of the non-woven fabric 7, and a sliding plate is slidably connected to the verification frame along a direction perpendicular to the movement direction of the non-woven fabric 7. Both the movement of the verification frame and the sliding plate are achieved using electric actuators. An adhesive block 29 is fixed to the sliding plate, and the connection between the adhesive block 29 and the sliding plate can be achieved by bolts or glue. The movement direction of the marking paper is perpendicular to the movement direction of the verification frame. The movement of the marking paper 30 is controlled by two winding rollers and two winding motors. The marking paper 30 is made of a material suitable for marking dust, as indicated by the adhesive block 29. The cleaning component 31 is made of a material with high friction, such as sandpaper, to easily remove dust adhering to the adhesive block 29. A color sensor 32 faces the marking paper and can identify the color of dust on the marking paper 30. The color sensor 32 and the buzzer are controlled by a PLC controller.

[0036] When the nonwoven fabric 7 needs to be checked, the clamping control of the upper plate 10 and lower plate 11 on the nonwoven fabric 7 needs to be released. At the same time, the nonwoven fabric 7 needs to be kept taut. The check frame is controlled to slide out from the check box 28, and the adhesive block 29 is slid towards the nonwoven fabric 7 until the end of the adhesive block 29 abuts against the nonwoven fabric 7. Since the adhesive block 29 has the function of adsorbing dust, after the adhesive block 29 comes into contact with the nonwoven fabric 7, it can adsorb the dust particles that are not easy to shake off. Then, the check frame is pulled into the composite box. During the movement, the end of the adhesive block 29 is controlled to come into contact with the marking paper 30. The marking paper 30 is controlled to move until the position of the dust adhering to the marking paper 30 moves to the position of the color sensor 32. The color sensor 32 identifies the dust on the marking paper 30. If there is indeed dust on the marking paper 30, it proves that there are indeed dust particles on the nonwoven fabric 7. Therefore, it proves that there is dust in the air supply, which means that the HEPA filter 4 has a filtration problem and needs to be replaced.

[0037] If a large amount of dust is observed in the Tyndall effect, the verification operation is invalid, but the dust needs to be adsorbed to avoid affecting the subsequent replacement of the backup filter mechanism. The adsorption component includes a rotating rod 20 rotatably mounted on the detection frame 6, an adsorption rod 21 hinged to the rotating rod 20, a dust removal part movably mounted in the adsorption rod 21, and a first impeller 22. The impeller is connected to the rotating rod 20 in a transmission manner. The axis of the first impeller 22 is along the air supply direction. The rotating rod 20 is equipped with an adsorption motor for controlling the rotation of the adsorption rod 21. The axis of the rotating rod 20 is perpendicular to the air supply direction. The first impeller 22 and the rotating rod 20 are transmitted through two bevel gears, that is, the direction is changed through two mutually perpendicular bevel gears. This will not be elaborated in this embodiment. The first impeller 22 can control the rotation of the rotating rod 20 by controlling the air supply force. Since the air force required on the rotating rod 20 is not large, it is assumed in this embodiment that the air force is sufficient to control the rotation of the rotating rod 20.

[0038] The dust removal unit includes a dust removal roller, a dust removal motor 23 for controlling the rotation of the dust removal roller, electrostatic dust removal paper 24 wound around the dust removal roller, a gravity rod 25, and a second electromagnet 26. The adsorption rod 21 is provided with a placement cavity 27. The dust removal roller rotates in the placement cavity 27. One end of the dust removal paper is fixedly connected to the outer peripheral wall of the dust removal roller, and the other end is fixedly connected to the gravity rod 25. The end of the gravity rod 25 near the rotating rod 20 is fixedly connected to the second electromagnet 26. The second electromagnet 26 is attracted to the rotating rod 20. When the rotating rod 20 starts to rotate, in this embodiment, an electromagnet or other mechanism can be set to fix the rotating rod 20. The electromagnet will only release the rotating rod 20 to rotate when dust needs to be adsorbed. The electrostatic dust removal paper 24 is used to quickly adsorb dust. When dust needs to be adsorbed, the dust removal motor 23 starts to control the dust removal roller to rotate, and the electrostatic dust removal paper 24 begins to be released from the dust removal roller. The electrostatic dust removal paper 24 is in a taut state under the action of the gravity rod 25. During this process, the second electromagnet 26 moves along the length of the rotating rod 20 until the gravity rod 25 moves to the lowest position. The second electromagnet 26 is attracted to the peripheral wall of the rotating rod 20, thereby achieving the effect of fixing the electrostatic dust removal paper 24. At this time, the first impeller 22 is controlled to rotate by the air force. The first impeller 22 drives the rotating rod 20 to rotate under the action of the bevel gear. During the rotation, the rotating rod 20 increases the adsorption efficiency of the electrostatic dust removal paper 24 and quickly adsorbs the dust floating in the spare tube 5.

[0039] The backup filtration mechanism includes a backup frame 33 rotatably mounted within the backup pipe 5, a backup filter 34 mounted on the backup frame 33, a protective assembly for protecting the backup filter 34, and a power assembly for controlling the rotation of the backup frame 33. In its initial state, the plane of the backup filter 34 is along the airflow direction. The protective assembly protects the backup filter 34. When the backup filter 34 needs to operate, the protective assembly needs to be disengaged. The power assembly includes a second impeller 35, a first bevel gear 36, a second bevel gear 37 meshing with the first bevel gear 36, and a power assembly for controlling the rotation of the backup frame 33. The backup frame 33 rotates to the adjustment section at the designated position within a specified time. The second bevel gear 37 is fixed coaxially with the backup frame 33. The axis of the second impeller 35 is along the air supply direction. The first bevel gear 36 is in the same direction as the second impeller 35. In this embodiment, in order to ensure the filtering work of the backup filter 34, a backup box 50 is provided on the outer peripheral wall of the backup pipe 5. An air inlet is provided between the backup box 50 and the backup pipe 5. A one-way valve is provided in the air inlet, which only allows air in the backup box 50 to flow into the backup pipe 5. The second impeller 35, the first bevel gear 36, and the second bevel gear 37 are all located in the backup box 50.

[0040] The regulating unit includes a regulating pipe 38, a regulating valve 39, a regulating block 40, a proximity switch 44, and an indicator light. One end of the regulating pipe 38 is connected to the spare pipe 5 near the housing 1. The regulating valve 39 is mounted on the regulating pipe 39. The regulating block 40 is elastically disposed inside the spare pipe 5. The proximity switch 44 is mounted on the rotating shaft of the second impeller 35. When the regulating block 40 moves to a designated position, the indicator light illuminates when the proximity switch 44 contacts the regulating block 40. The inner wall of the spare pipe 5 is provided with an regulating groove 45 for the movement of the regulating block 40. The groove 45 is equipped with an adjusting electromagnet 42 and an adjusting electric push rod 43 for controlling the reciprocating motion of the adjusting block 40. The adjusting electric push rod 43 is fixed in the adjusting groove 45. The output end of the adjusting electromagnet 42 is connected to the adjusting electric push rod 43. An elastic element 41 is fixedly connected between the corresponding end of the adjusting block 40 and the adjusting groove 45. The elastic element 41 is used to control the adjusting block 40 to move automatically to the initial position. In the initial state, the adjusting electromagnet 42 pulls the adjusting block 40 to the corresponding position and the elastic element 41 is in a state of tension deformation. One end of the adjusting tube 38 is optimally connected to the spare box 50 at this point.

[0041] The protective assembly includes a protective cover 46 that is lifted and lowered on the backup pipe and a guide for pulling the protective cover 46. The protective cover 46 is made of soft material and covers the backup frame 33. The protective cover 46 is made of soft material and includes an upper frame, a lower frame and a protective cloth. The guide includes four guide ropes 48, two guide rollers 47 and two guide motors 49. The length direction of the guide rollers 47 is also perpendicular to the wind direction. The guide motors 49 are installed in the backup box 50 and control the rotation of the guide rollers 47. The protective cloth is used to connect the upper frame and the lower frame. The four guide ropes 48 are fixedly connected to the four corners of the upper frame respectively. The four guide ropes 48 are divided into two groups, and each group of guide ropes is connected to the same guide roller 47. In the initial state, the protective cover 46 protects the entire backup frame 33. Similarly, the second impeller 35 also needs to be set to be attracted and limited by the corresponding electromagnet. The backup frame 33 only needs to be opened when the backup filter 34 is needed.

[0042] First, the guide roller 47 and guide rope 48 are needed to pull up the protective cover 46 until it reaches the top of the spare frame 33. The size of the protective cover 46 is larger than the size of the spare frame 33. At this time, the spare pipe 5 and the air supply pipe can be closed and the regulating pipe 38 can be opened. The regulating pipe 38 is directly opposite the blades of the second impeller 35. The second impeller 35 controls the first bevel gear 36 and the second bevel gear 37 to cooperate with each other, thereby allowing the spare frame 33 to start rotating. At the same time, the regulating electromagnet 42 separates from the regulating block 40. The regulating block 40 moves toward the initial position under the action of the elastic element 41, and the proximity switch 44 starts to rotate upward from the initial position. When the regulating block 40 moves to the initial position and the proximity switch 44 just rotates to the position of the regulating block, the regulating block 40 rotates upward. When the proximity switch 44 is in contact with the adjustment block 40, the indicator light will illuminate. However, if the proximity switch 44 is not in contact with the adjustment block 40, it is assumed in this embodiment that the speed of the proximity switch 44 is too slow. Therefore, it is necessary to increase the airflow speed to accelerate the rotation of the spare frame 33 to the designated position. Similarly, in this embodiment, an electromagnet is installed at the position of the spare tube 5. When the spare frame 33 rotates to a position perpendicular to the airflow direction, it is necessary to fix the spare frame 33 with adsorption, and the adjustment tube 38 also needs to be closed. The spare tube 5 is then activated to start airflow. At the same time, the non-woven fabric 7 needs to be pulled away to pull the traction rope 8 into the range of the spare tube 5. The spare filter 34 is then officially activated, and the staff can replace the high-efficiency filter 4.

[0043] The implementation principle of a cleanroom air supply system according to an embodiment of this application is as follows: After the non-woven fabric 7 filters the air for a period of time, it needs to be released a certain distance until the non-woven fabric 7 is in a relaxed state. At this time, the lower plate 11 is moved towards the upper plate 10. After the electromagnet on the lower plate 11 is attracted to the upper plate 10, the non-woven fabric 7 is quickly pulled towards the lower plate 11. The spring 13 is in a stretched and deformed state. The reciprocating electromagnet 16 is controlled to release the lower plate 11. Under the elastic force of the spring 13, the lower plate 11 is quickly ejected towards the upper plate 10. At this time, along the position where the upper plate 10 and the lower plate 11 clamp the non-woven fabric 7, the non-woven fabric 7 begins to fluctuate, thereby achieving the shaking effect of the non-woven fabric 7. During the shaking process, the dust particles adhering to the non-woven fabric 7 are shaken off. The light source 18 is turned on. If there is a lot of dust, under the illumination of the light source 18, the dust will undergo the Tyndall effect. The camera 19 can take pictures of the dust, thereby judging the dust situation on the non-woven fabric 7.

[0044] When the nonwoven fabric 7 needs to be checked, the clamping control of the upper plate 10 and lower plate 11 on the nonwoven fabric 7 needs to be released. At the same time, the nonwoven fabric 7 needs to be kept taut. The check frame is controlled to slide out from the check box 28, and the adhesive block 29 is slid towards the nonwoven fabric 7 until the end of the adhesive block 29 abuts against the nonwoven fabric 7. Since the adhesive block 29 has the function of adsorbing dust, after the adhesive block 29 comes into contact with the nonwoven fabric 7, it can adsorb the dust particles that are not easy to shake off. Then, the check frame is pulled into the composite box. During the movement, the end of the adhesive block 29 is controlled to come into contact with the marking paper 30. The marking paper 30 is controlled to move until the position of the dust adhering to the marking paper 30 moves to the position of the color sensor 32. The color sensor 32 identifies the dust on the marking paper 30. If there is indeed dust on the marking paper 30, it proves that there are indeed dust particles on the nonwoven fabric 7. Therefore, it proves that there is dust in the air supply, which means that the HEPA filter 4 has a filtration problem and needs to be replaced.

[0045] First, the guide roller 47 and guide rope 48 are needed to pull up the protective cover 46 until it reaches the top of the spare frame 33. The size of the protective cover 46 is larger than the size of the spare frame 33. At this time, the spare pipe 5 and the air supply pipe can be closed and the regulating pipe 38 can be opened. The regulating pipe 38 is directly opposite the blades of the second impeller 35. The second impeller 35 controls the first bevel gear 36 and the second bevel gear 37 to cooperate with each other, thereby allowing the spare frame 33 to start rotating. At the same time, the regulating electromagnet 42 separates from the regulating block 40. The regulating block 40 moves toward the initial position under the action of the elastic element 41, and the proximity switch 44 starts to rotate upward from the initial position. When the regulating block 40 moves to the initial position and the proximity switch 44 just rotates to the position of the regulating block, the regulating block 40 rotates upward. When the proximity switch 44 is in contact with the adjustment block 40, the indicator light will illuminate. However, if the proximity switch 44 is not in contact with the adjustment block 40, it is assumed in this embodiment that the speed of the proximity switch 44 is too slow. Therefore, it is necessary to increase the airflow speed to accelerate the rotation of the spare frame 33 to the designated position. Similarly, in this embodiment, an electromagnet is installed at the position of the spare tube 5. When the spare frame 33 rotates to a position perpendicular to the airflow direction, it is necessary to fix the spare frame 33 with adsorption, and the adjustment tube 38 also needs to be closed. The spare tube 5 is then activated to start airflow. At the same time, the non-woven fabric 7 needs to be pulled away to pull the traction rope 8 into the range of the spare tube 5. The spare filter 34 is then officially activated, and the staff can replace the high-efficiency filter 4.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A clean room air supply system, the air supply system being mounted externally of a surgical room, characterized in that: The air treatment module comprises a rough filter (2) and a medium filter (3) arranged on a supply fan and a high efficiency filter (4) arranged at a clean room supply air outlet; The air treatment module further comprises a standby device for realizing non-stop replacement of the high efficiency filter (4), the standby device comprising a standby pipe (5), a valve mechanism, a detection mechanism for detecting dust in air, a review mechanism for re-inspecting dust, and a standby filter mechanism; One end of the standby pipe (5) is arranged in front of the high efficiency filter (4) in the shell (1), and the other end is arranged to connect the clean room supply air outlet, and the valve mechanism is used to realize normal air supply of the standby pipe (5). The detection mechanism comprises a detection frame (6) arranged in the standby pipe (5), a non-woven fabric (7) movably arranged on the detection frame (6), a traction assembly for pulling the non-woven fabric (7), a shaking assembly for shaking the non-woven fabric (7), a viewing assembly for observing dust by the Tyndall effect, and an adsorption assembly for adsorbing dust, and the non-woven fabric (7) filters dust and is in a straightened state. The adsorption assembly comprises a rotating rod (20) rotatably arranged on the detection frame (6), an adsorption rod (21) hingedly arranged on the rotating rod (20), a dust removal part movably arranged in the adsorption rod (21), and a first impeller (22), the first impeller (22) is in transmission connection with the rotating rod (20), the axis direction of the first impeller (22) is along the air supply direction, and the rotating rod (20) is provided with an adsorption motor for controlling rotation of the adsorption rod (21). The review mechanism comprises a review box (28) arranged on the detection frame (6), an adhering block (29) movably arranged in the review box (28), a driving assembly for controlling movement of the adhering block (29), a marking paper (30) for marking dust by the adhering block (29), a cleaning piece (31) for cleaning dust on the adhering block (29), and a color sensor (32), the marking paper (30) is movably arranged in the review box (28), the color sensor (32) faces the marking paper (30), and the color sensor (32) is electrically connected with a buzzer.

2. A clean room air supply system according to claim 1 wherein: The shaking assembly comprises an upper plate (10) elastically arranged on the detection frame (6), a lower plate (11) for adsorbing the upper plate (10), a first electromagnet (12) arranged on the lower plate (11), and a reciprocating part for realizing reciprocating movement of the lower plate (11), when the lower plate (11) and the upper plate (10) are adsorbed, the non-woven fabric (7) is in a relaxed state.

3. A clean room air supply system according to claim 2, wherein: The reciprocating part comprises a spring (13), a sliding rod (14), a reciprocating electric push rod (15) and a reciprocating electromagnet (16), the detection frame (6) is provided with a through hole (17) for sliding of the sliding rod (14), the sliding rod (14) is fixedly connected with the upper surface of the upper plate (10), the spring (13) is sleeved outside the sliding rod (14) and is fixedly connected with the detection frame (6) and the upper plate (10) at two ends respectively, the reciprocating electric push rod (15) is fixed on the detection frame (6) and is used for controlling movement of the reciprocating electromagnet (16), and the reciprocating electromagnet (16) adsorbs the lower plate (11).

4. A clean room air supply system according to claim 3, wherein: The viewing assembly comprises a light source (18) and a camera (19), the light source (18) and the camera (19) are arranged on the two sides of the detection frame (6) respectively, and the shooting direction of the camera (19) is perpendicular to the light emitting direction of the light source (18).

5. A clean room air supply system according to claim 4, wherein: The dust removal part comprises a dust removal roller, a dust removal motor (23) used for controlling rotation of the dust removal roller, electrostatic dust removal paper (24) wound outside the dust removal roller, a gravity rod (25) and a second electromagnet (26), the adsorption rod (21) is provided with a placing cavity (27), the dust removal roller rotates in the placing cavity (27), one end of the electrostatic dust removal paper is fixedly connected with the outer peripheral wall of the dust removal roller, the other end is fixedly connected with the gravity rod (25), one end of the gravity rod (25) close to the rotating rod (20) is fixedly connected with the second electromagnet (26), and the second electromagnet (26) is adsorbed with the rotating rod (20).

6. A clean room air supply system according to claim 5, wherein: The standby filtering mechanism comprises a standby frame (33) rotatably arranged in the standby pipe (5), a standby filter (34) arranged on the standby frame (33), a protection assembly used for protecting the standby filter (34) and a power assembly used for controlling rotation of the standby frame (33), and the plane where the standby filter (34) is located is along the air supply direction in the initial state of the standby frame (33).

7. A clean room air supply system according to claim 6, wherein: The power assembly comprises a second impeller (35), a first bevel gear (36), a second bevel gear (37) meshingly connected with the first bevel gear (36) and an adjusting part used for ensuring that the standby frame (33) rotates to a specified position within a specified time, the second bevel gear (37) is coaxially fixed with the standby frame (33), the axis direction of the second impeller (35) is along the air supply direction, and the first bevel gear (36) is coaxially fixed with the second impeller (35).

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