Air supply system in clean room

Abstract

The invention discloses an indoor air supply system for a clean room, which comprises a shell, an air pipe module, an air processing module and a control module, and the air processing module comprises a low-efficiency filter and a medium-efficiency filter which are arranged on an air supply fan, and a high-efficiency filter arranged at an air supply outlet of the clean room; the air treatment module further comprises a standby device used for achieving non-stop replacement of the efficient filter. The standby device comprises a standby pipe, a valve mechanism, a detection mechanism used for detecting dust in the air, a rechecking mechanism used for rechecking the dust and a standby filtering mechanism. One end of the standby pipe is arranged in the shell and located in front of the efficient filter, the other end of the standby pipe is provided with an air supply outlet connected with the clean room, and the valve mechanism is used for achieving normal air supply of the standby pipe. The device has the effect of intelligently detecting whether dust exists or not, and in addition, the effect of replacing the high-efficiency filter without shutdown can also be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of air supply in clean rooms, and in particular to an air supply system in a clean room. Background Art

[0002] At present, a clean operating room refers to a specially designed room that eliminates pollutants such as particulate matter, harmful air, bacteria, etc. in the air within a certain space, and controls the indoor temperature, cleanliness, indoor pressure, air flow speed and distribution, noise vibration, lighting, and static electricity within a certain required range.

[0003] At present, most of the filter modules are set in the design process, for example, primary, intermediate and advanced filter modules are set respectively. The primary and intermediate filter modules are set in the air-conditioning unit, and the advanced filter module is set at the terminal air outlet. If there is a problem with the corresponding filter module during the air supply process, it will affect the subsequent air filtration effect and the quality of the air finally entering the clean operating room.

[0004] Regarding the above-mentioned related technologies, the inventor believes that there are the following defects: When there is a problem with the filter module, a pressure sensor is currently used to judge the pressure in the pipeline. If the pressure increases, it proves that there is a problem with the corresponding filter module, but it cannot determine whether there is dust in the subsequent air outlet. Therefore, it is urgent to judge whether there is dust. Summary of the invention

[0005] In order to improve the problem of difficulty in judging whether dust exists, the present application provides an air supply system in a clean room.

[0006] The present application provides a clean room air supply system adopting the following technical solution: A clean room air supply system, comprising a housing, an air duct module, an air processing module and a control module, wherein the air processing module comprises a coarse-effect filter and a medium-effect filter arranged on a blower and a high-efficiency filter arranged at an air supply port of the clean room; The air treatment module also includes a backup device for realizing non-stop replacement of the high-efficiency filter, the backup device including a backup pipe, a valve mechanism, a detection mechanism for detecting dust in the air, a review mechanism for rechecking the dust, and a backup filtering mechanism; One end of the standby pipe is arranged on the housing in front of the high efficiency filter, and the other end is provided with an air supply port connected to the clean room, and the valve mechanism is used to realize normal air supply of the standby pipe.

[0007] Optionally, the detection mechanism includes a detection frame arranged in the spare pipe, a non-woven fabric movably arranged 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, and the non-woven fabric filters dust and is in a stretched state.

[0008] Optionally, the shaking assembly includes an upper plate elastically arranged on the detection frame, a lower plate for adsorbing the upper plate, a first electromagnet arranged on the lower plate, and a reciprocating part for realizing reciprocating motion of the lower plate, and the non-woven fabric is in a relaxed state when the lower plate is adsorbed with the upper plate.

[0009] Optionally, the reciprocating part includes a spring, a sliding rod, a reciprocating electric push rod and a reciprocating electromagnet. The detection frame is provided with a through hole for the sliding rod to slide. The sliding rod is fixedly connected to the upper surface of the upper plate. The spring is sleeved outside the sliding rod, and its two ends are respectively fixedly connected to the detection frame and the upper plate. 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 adsorbs the lower plate.

[0010] Optionally, the viewing component includes a light source and a camera, and the light source and the camera are respectively arranged on both sides of the detection frame, and the shooting direction of the camera is perpendicular to the direction of light emitted by the light source.

[0011] Optionally, the adsorption assembly includes a rotating rod rotatably arranged on the detection frame, an adsorption rod hingedly arranged on the rotating rod, a dust removal part movably arranged in the adsorption rod, and a first impeller, the impeller is transmission-connected to the rotating rod, the axial direction of the first impeller is along the air supply direction, and the rotating rod is provided with an adsorption motor for controlling the rotation of the adsorption rod.

[0012] Optionally, the dust removal part includes a dust removal roller, a dust removal motor for controlling the rotation of the dust removal roller, electrostatic dust removal paper wound outside 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, one end of the gravity rod close to the rotating rod is fixedly connected to the second electromagnet, and the second electromagnet is adsorbed to the rotating rod.

[0013] Optionally, the review mechanism includes a review box arranged on the detection frame, an adhesive block movably arranged in the review box, a driving component for controlling the movement of the adhesive block, marking paper for marking dust on the adhesive block, a cleaning piece for cleaning dust on the adhesive block, and a color sensor, the marking paper is movably arranged in the review box, the color sensor is opposite to the marking paper, and the color sensor is electrically connected to a buzzer.

[0014] Optionally, the standby filtering mechanism includes a standby rack rotatably disposed in the standby pipe, a standby filter disposed on the standby rack, a protective component for protecting the standby filter, and a power component for controlling the rotation of the standby rack. When the standby rack is in an initial state, the plane where the standby filter is located is along the air supply direction.

[0015] 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 rack rotates to a specified position within a specified time, the second bevel gear is coaxially fixed with the spare rack, the axial direction of the second impeller is along the air supply direction, and the first bevel gear is in the same direction as the second impeller.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the non-woven fabric has filtered the air for a period of time, it is necessary to release the non-woven fabric for a distance until the non-woven fabric is in a relaxed state. At this time, the lower plate is moved toward the upper plate. After the electromagnet on the lower plate is adsorbed with the upper plate, the non-woven fabric is quickly pulled toward the lower plate. The spring is in a state of stretching and deformation. The reciprocating electromagnet is controlled to release the lower plate. Under the elastic force of the spring, the lower plate is quickly ejected toward the upper plate. At this time, the non-woven fabric begins to fluctuate along the position where the non-woven fabric is clamped by the upper and lower plates, thereby achieving a shaking effect on the non-woven fabric. The dust particles adhered to the non-woven fabric are shaken off during the shaking process. Turn on the light source. If there is a lot of dust, the dust will undergo a Tyndall effect under the irradiation of the light source. The camera can shoot the dust, and then the dust filtered on the non-woven fabric can be judged. 2. When the non-woven fabric needs to be reviewed, the clamping control state of the upper plate and the lower plate on the non-woven fabric needs to be released, and the non-woven fabric needs to be kept in a straight state. The review frame is controlled to slide out of the review box, and the adhesive block is slid toward the non-woven fabric until the end of the adhesive block abuts against the non-woven fabric. Since the adhesive block has an adsorption effect on dust, the adhesive block can adsorb dust particles that are adhered to the non-woven fabric and are not easy to shake off after contacting the non-woven fabric. At this time, the review frame is pulled into the composite box, and during the movement, the end of the adhesive block is controlled to contact the marking paper, and the marking paper is controlled 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, that is, there is a filtration problem with the high-efficiency filter, and the high-efficiency filter needs to be replaced. 3. First, the guide roller and the guide rope are needed to pull up the protective cover until it is pulled to the top of the spare rack. The size of the protective cover is larger than that of the spare rack. At this time, the spare pipe and the air supply pipe can be closed and the adjustment pipe can be opened. The adjustment pipe is facing the blades of the second impeller. The second impeller controls the first bevel gear and the second bevel gear to cooperate with each other, so that the spare rack can be turned on and rotated. At the same time, the adjustment electromagnet is separated from the adjustment block, and the adjustment block moves toward the initial position under the action of the elastic member, and the proximity switch starts to rotate upward from the initial position. When the adjustment block moves to the initial position and the proximity switch just rotates to the position in contact with the adjustment block, the proximity switch triggers the display light to light up. When the spare rack rotates to a position perpendicular to the air supply direction, the spare rack needs to be adsorbed and fixed, and the adjustment pipe also needs to be closed, and the spare pipe is enabled to start air supply. At the same time, the non-woven cloth needs to be pulled away to pull the traction rope to the range of the spare pipe. The spare filter is officially started to work, and the staff can replace the high-efficiency filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a schematic diagram of a detection mechanism in an embodiment of the present application; Figure 3 yes Figure 2 A magnified schematic diagram of part A; Figure 4 yes Figure 1 A magnified schematic diagram of part B; Figure 5 It is a schematic diagram of the review mechanism in the embodiment of the present application.

[0018] Figure 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 bar; 15, reciprocating electric push rod; 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 electro Magnet; 27, placement cavity; 28, review box; 29, adhesive block; 30, marking paper; 31, cleaning piece; 32, color sensor; 33, spare rack; 34, spare filter; 35, second impeller; 36, first bevel gear; 37, second bevel gear; 38, adjustment tube; 39, adjustment valve; 40, adjustment block; 41, elastic part; 42, adjustment electromagnet; 43, adjustment electric push rod; 44, proximity switch; 45, adjustment slot; 46, protective cover; 47, guide roller; 48, guide rope; 49, guide motor; 50, spare box. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-5 This application is described in further detail.

[0020] The present application embodiment discloses a clean room air supply system. Figure 1-Figure 5A clean room air supply system includes a housing 1, an air duct module, an air processing module and a control module. The air processing module includes a coarse filter 2 and a medium filter 3 arranged on the air blower and a high efficiency filter 4 arranged at the air supply port of the clean room; the air duct module includes an air supply duct, a return air duct, a fresh air duct and an exhaust duct. These ducts are responsible for transporting the treated air to the operating room and discharging the dirty air in the room; including air supply ducts, return air ducts, fresh air ducts and exhaust ducts. These ducts are responsible for transporting the treated air to the operating room and discharging the dirty air in the room. The coarse filter 2 is mainly used to filter dust particles with larger particle sizes, such as dust of 10 to 100 microns. As the first line of defense of the air purification system, it can effectively prevent large-size particles in the atmosphere from entering the system, thereby protecting the subsequent medium and high efficiency filters 4 and extending their service life. The coarse filter 2 is mainly used to filter dust particles with larger particle sizes, such as dust of 10 to 100 microns. As the first line of defense of the air purification system, it can effectively prevent large-size particles in the atmosphere from entering the system, thereby protecting the subsequent medium-efficiency and high-efficiency filters 4 and extending their service life. The coarse-efficiency filter 2 is mainly used to filter dust particles with larger particle sizes, such as dust of 10 to 100 microns. As the first line of defense of the air purification system, it can effectively prevent large-size particles in the atmosphere from entering the system, thereby protecting the subsequent medium-efficiency and high-efficiency filters 4 and extending their service life.

[0021] The air handling module also includes a spare device for realizing non-stop replacement of the high-efficiency filter 4, the spare device includes a spare pipe 5, a valve mechanism, a detection mechanism for detecting dust in the air, a review mechanism for re-inspecting dust, and a spare filtering mechanism; one end of the spare pipe 5 is arranged on the shell 1 in front of the high-efficiency filter 4, and the other end is provided with an air supply port connected to the clean room, the valve mechanism is used to realize normal air supply of the spare pipe 5, the valve mechanism includes a plurality of solenoid valves, which are mainly used to realize normal air supply of the air supply pipe and when the spare pipe 5 is needed to supply air, the air supply of the air supply pipe at this section of the high-efficiency filter 4 needs to be introduced into the spare pipe 5, and the spare filtering mechanism in the spare pipe 5 continues to work, and at this time, the high-efficiency filter 4 in the air supply pipe can be repaired or replaced, thereby realizing the effect of replacing the high-efficiency filter 4 without stopping the machine.

[0022] The detection mechanism includes a detection frame 6 arranged in the spare pipe 5, a non-woven fabric 7 movably arranged on the detection frame 6, a traction component for traction of the non-woven fabric 7, a shaking component for shaking the non-woven fabric 7, a viewing component for observing the dust situation through the Tyndall effect, and an adsorption component for adsorbing dust. The non-woven fabric 7 filters the dust and is in a stretched state. The plane where the detection frame 6 is located is perpendicular to the direction of air supply. The non-woven fabric 7 can achieve the effect of filtering the dust by the high-efficiency filter 4. Therefore, if dust enters the spare pipe 5 due to problems with the high-efficiency filter 4, the dust 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 arranged here. The non-woven fabrics 7 and the traction ropes 8 are arranged at intervals. The area of ​​the non-woven fabric 7 is larger than the area of ​​the spare pipe 5, thereby ensuring that the non-woven fabric 7 filters the dust in the air supply process. The traction ropes 8 at both ends are respectively fixedly connected to the peripheral walls of the traction rollers 9, and a traction cavity for placing the traction rollers 9 is provided in the detection frame 6.

[0023] The shaking assembly includes 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 the reciprocating motion 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. The reciprocating part includes a spring 13, a slide bar 14, a reciprocating electric push rod 15 and a reciprocating electromagnet 16. The detection frame 6 is provided with a through hole 17 for the slide bar 14 to slide. The slide bar 14 is fixedly connected to the upper surface of the upper plate 10. The spring 13 is sleeved outside the slide bar 14, and the two ends are respectively fixedly connected to the detection frame 6 and the upper plate 10. The reciprocating electric push rod 15 is fixed on the detection 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 induced side of the non-woven fabric 7. The lower plate 11 On the other side of the non-woven fabric 7, the first electromagnet 12 adsorbs the lower plate 11; when the non-woven fabric 7 has filtered the air for a period of time, the non-woven fabric 7 needs to be released for a distance until the non-woven fabric 7 is in a relaxed state, and the lower plate 11 is moved toward the upper plate 10. After the electromagnet on the lower plate 11 is adsorbed with the upper plate 10, the non-woven fabric 7 is quickly pulled toward the lower plate 11, and the spring 13 is in a state of stretching and deformation, and 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 toward the upper plate 10. At this time, the position where the non-woven fabric 7 is clamped along the upper plate 10 and the lower plate 11 begins to fluctuate, thereby achieving a shaking effect on the non-woven fabric 7. The dust particles adhered to the non-woven fabric 7 are shaken off during the shaking process.

[0024] The viewing component includes a light source 18 and a camera 19. The light source 18 and the camera 19 are respectively arranged on both sides of the detection 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 produce a Tyndall effect under the irradiation of the light source 18. The camera 19 can shoot the dust, and then the dust filtered on the non-woven fabric 7 can be judged. In order to protect the camera 19 and the light source 18 in this embodiment, the light source 18 and the camera 19 are both installed in a transparent box.

[0025] If the camera 19 observes that there is not much dust in the spare tube 5, it may be because the dust particles are large or of medium quality and adhere to the non-woven fabric 7 and are not easy to shake off, so a review is needed. The review mechanism includes a review box 28 arranged on the detection frame 6, an adhesive block 29 movably arranged in the review box 28, a driving component for controlling the movement of the adhesive block 29, a marking paper 30 for marking the dust with the adhesive block 29, a cleaning piece 31 for cleaning the dust on the adhesive block 29, and a color sensor 32. The marking paper 30 is movably arranged in the review box 28, and the color sensor 32 is directly opposite to the marking paper 30. The color sensor 32 is electrically connected to a buzzer. In this embodiment, the adhesive block 29 can be made of materials such as rubber blocks or silicone, preferably rubber blocks. The adhesive block 29 moves along the movement direction of the non-woven fabric 7 and can also move perpendicular to the non-woven fabric 7 at the same time. The driving assembly includes a review frame and a slide plate, that is, a review frame is connected to the review box 28 in a sliding manner along the movement direction of the non-woven fabric 7, and a slide plate is connected to the review frame in a sliding manner perpendicular to the movement direction of the non-woven fabric 7. The movement of the review frame and the slide plate are both realized by electric push rods. The adhesive block 29 is fixed on the slide plate. The connection between the adhesive block 29 and the slide plate can be adhered together by bolts or glue. The movement direction of the marking paper is perpendicular to the movement direction of the review frame. The movement of the marking paper 30 is through two winding rollers and two winding motors. The marking paper 30 can be made of a material that can mark dust with the adhesive block 29. The cleaning piece 31 is made of a material with large friction, such as sandpaper, so as to facilitate cleaning the part of the adhesive block 29 that adheres to dust. The color sensor 32 is facing the marking paper and can identify the color of dust on the marking paper 30. The color sensor 32 is connected to the buzzer through a PLC controller.

[0026] When it is necessary to review the non-woven fabric 7, it is necessary to release the clamping control state of the upper plate 10 and the lower plate 11 on the non-woven fabric 7, and at the same time, it is necessary to keep the non-woven fabric 7 in a straight state, control the review frame to slide out of the review box 28, and slide the adhesive block 29 toward the non-woven fabric 7 until the end of the adhesive block 29 abuts against the non-woven fabric 7. Since the adhesive block 29 has an adsorption effect on dust, the adhesive block 29 can adsorb dust particles that are adhered to the non-woven fabric 7 and are not easy to shake off after contacting the non-woven fabric 7. At this time, the review frame is pulled into the composite box again. During the movement, after controlling the end of the adhesive block 29 to contact the marking paper 30, the marking paper 30 is controlled to move until the position where the dust is adhered on 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 non-woven fabric 7. Therefore, it proves that there is dust in the air supply, that is, there is a filtration problem with the high-efficiency filter 4, and the high-efficiency filter 4 needs to be replaced.

[0027] If a lot of dust is observed in the Tyndall effect, the review operation is invalid, but the dust needs to be adsorbed to avoid affecting the subsequent replacement of the standby filtering mechanism. The adsorption assembly includes a rotating rod 20 rotatably set on the detection frame 6, an adsorption rod 21 hingedly set on the rotating rod 20, a dust removal part movably set in the adsorption rod 21, and a first impeller 22. The impeller is connected to the rotating rod 20 in a transmission manner. The axial direction of the first impeller 22 is along the air supply direction. The rotating rod 20 is provided with an adsorption motor for controlling the rotation of the adsorption rod 21. The axial direction 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. It will not be repeated in this embodiment. The first impeller 22 can control the rotation of the rotating rod 20 by controlling the wind force of the air supply. Since the wind force required on the rotating rod 20 is not large, the default wind force in this embodiment can control the rotation of the rotating rod 20.

[0028] The dust removal part includes a dust removal roller, a dust removal motor 23 for controlling the rotation of the dust removal roller, an 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 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. One end of the gravity rod 25 close to the rotating rod 20 is fixedly connected to the second electromagnet 26, and the second electromagnet 26 is adsorbed 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. Only when dust needs to be adsorbed, the electromagnet will release the rotating rod 20 to rotate. The electrostatic dust removal paper 24 is used to quickly adsorb dust. When it is necessary to adsorb the dust, the dust removal motor 23 starts to control the dust removal roller to rotate, and the electrostatic dust removal paper 24 starts to be released from the dust removal roller. The electrostatic dust removal paper 24 is in a stretched state under the action of the gravity rod 25. During this process, the second electromagnet 26 moves along the length direction of the rotating rod 20 until the gravity rod 25 moves to the lowest position. The second electromagnet 26 is adsorbed to the peripheral wall of the rotating rod 20, thereby achieving the fixing effect of the electrostatic dust removal paper 24. At this time, the rotation of the first impeller 22 is controlled by the wind force of the air supply. The first impeller 22 drives the rotating rod 20 to rotate under the driving action of the bevel gear. The rotating rod 20 increases the adsorption efficiency of the electrostatic dust removal paper 24 during rotation, and quickly adsorbs the dust floating in the spare pipe 5.

[0029] The standby filter mechanism includes a standby frame 33 rotatably arranged in the standby pipe 5, a standby filter 34 arranged on the standby frame 33, a protection component for protecting the standby filter 34, and a power component for controlling the rotation of the standby frame 33. When the standby frame 33 is in an initial state, the plane where the standby filter 34 is located is along the air supply direction. The protection group is used to protect the standby filter 34. When the standby filter 34 needs to work, the protection work of the protection component needs to be released. The power component 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 component for protecting the standby filter 34. The adjusting part ensures that the standby frame 33 rotates to the specified position within the specified time, the second bevel gear 37 is coaxially fixed with the standby frame 33, the axial direction of the second impeller 35 is along the air supply direction, and the first bevel gear 36 is in the same direction as the second impeller 35; in order to ensure the filtering work of the standby filter 34 in this embodiment, a standby box 50 is provided on the outer peripheral wall of the standby pipe 5, an air inlet is provided between the standby box 50 and the standby pipe 5, and a one-way valve is provided in the air inlet, which only allows the air in the standby box 50 to flow into the standby pipe 5, and the second impeller 35, the first bevel gear 36, and the second bevel gear 37 are all arranged in the standby box 50.

[0030] The regulating part includes a regulating pipe 38, a regulating valve 39, a regulating block 40, a proximity switch 44 and a display light. One end of the regulating pipe 38 is connected to the position of the standby pipe 5 close to the housing 1. The regulating valve 39 is arranged on the regulating valve 39. The regulating block 40 is elastically arranged in the standby pipe 5. The proximity switch 44 is arranged on the rotating shaft of the second impeller 35. When the regulating block 40 moves to a specified position, the proximity switch 44 contacts the regulating block 40 and the display light is on. The inner wall of the standby pipe 5 is provided with an adjusting groove 45 for the movement of the adjusting block 40. The slot 45 is provided 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 slot 45. The adjusting electromagnet 42 is connected to the output end of the adjusting electric push rod 43. An elastic member 41 is fixedly connected between the corresponding ends of the adjusting block 40 and the adjusting slot 45. The elastic member 41 is used to control the automatic movement of the adjusting block 40 to the initial position. In the initial state, the adjusting electromagnet 42 pulls the adjusting block 40 to the corresponding position and the elastic member 41 is in a state of stretching and deformation. One end of the adjusting tube 38 is optimally processed here to be connected to the spare box 50.

[0031] The protection assembly includes a protection cover 46 which is set to be lifted and lowered on the spare pipe 5 and a guide part for pulling the protection cover 46. The protection cover 46 is made of soft material and covers the spare rack 33. The protection cover 46 is made of soft material and includes an upper frame, a lower frame and a protection cloth. The guide part 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 motor 49 is installed in the spare box 50 and controls the rotation of the guide rollers 47. The protection 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, and 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 protection cover 46 protects the spare rack 33 as a whole. Similarly, the second impeller 35 also needs to be set to be adsorbed and restricted by the corresponding electromagnet. The spare rack 33 needs to be opened only when the spare filter 34 needs to be used.

[0032] First, the guide roller 47 and the guide rope 48 are needed to pull up the protective cover 46 until it is pulled to the top of the standby rack 33. The size of the protective cover 46 is larger than that of the standby rack 33. At this time, the standby 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 to 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, so that the standby rack 33 can be turned on and rotated. At the same time, the regulating electromagnet 42 is separated from the regulating block 40. The regulating block 40 moves toward the initial position under the action of the elastic member 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 aligned with the regulating block 40 contacts the position, the proximity switch 44 triggers the display light to light up, and when the proximity switch 44 does not contact the adjustment block 40, it is assumed by default in this embodiment that the rotation speed of the proximity switch 44 is slow, so the wind speed of the air supply needs to be increased, and the spare rack 33 is accelerated to rotate to the specified position. Similarly, in this embodiment, an electromagnet is provided at the position of the spare pipe 5. When the spare rack 33 rotates to a position perpendicular to the air supply direction, the spare rack 33 needs to be adsorbed and fixed, and the adjustment pipe 38 also needs to be closed, and the spare pipe 5 is enabled to start air supply. At the same time, the non-woven fabric 7 needs to be pulled away and the traction rope 8 is pulled into the range of the spare pipe 5. The spare filter 34 is officially started to work, and the staff can replace the high-efficiency filter 4.

[0033] The implementation principle of the air supply system in a clean room of the embodiment of the present application is as follows: after the non-woven fabric 7 has filtered the air supply for a period of time, the non-woven fabric 7 needs to be released for a distance until the non-woven fabric 7 is in a relaxed state, at which time the lower plate 11 is moved toward the upper plate 10, and after the electromagnet on the lower plate 11 is adsorbed with the upper plate 10, the non-woven fabric 7 is quickly pulled toward the lower plate 11, and the spring 13 is in a state of stretching and deformation, and 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 toward the upper plate 10, and at this time, the position where the non-woven fabric 7 is clamped along the upper plate 10 and the lower plate 11 begins to fluctuate, thereby achieving a shaking effect on the non-woven fabric 7, and the dust particles adhered to the non-woven fabric 7 are shaken off during the shaking process; turn on the light source 18, and if there is a lot of dust, the dust will undergo a Tyndall effect under the irradiation of the light source 18, and the camera 19 can shoot the dust, and then the dust filtered on the non-woven fabric 7 can be judged.

[0034] When it is necessary to review the non-woven fabric 7, it is necessary to release the clamping control state of the upper plate 10 and the lower plate 11 on the non-woven fabric 7, and at the same time, it is necessary to keep the non-woven fabric 7 in a straight state, control the review frame to slide out of the review box 28, and slide the adhesive block 29 toward the non-woven fabric 7 until the end of the adhesive block 29 abuts against the non-woven fabric 7. Since the adhesive block 29 has an adsorption effect on dust, the adhesive block 29 can adsorb dust particles that are adhered to the non-woven fabric 7 and are not easy to shake off after contacting the non-woven fabric 7. At this time, the review frame is pulled into the composite box again. During the movement, after controlling the end of the adhesive block 29 to contact the marking paper 30, the marking paper 30 is controlled to move until the position where the dust is adhered on 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 non-woven fabric 7. Therefore, it proves that there is dust in the air supply, that is, there is a filtration problem with the high-efficiency filter 4, and the high-efficiency filter 4 needs to be replaced.

[0035] First, the guide roller 47 and the guide rope 48 are needed to pull up the protective cover 46 until it is pulled to the top of the standby rack 33. The size of the protective cover 46 is larger than that of the standby rack 33. At this time, the standby 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 to 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, so that the standby rack 33 can be turned on and rotated. At the same time, the regulating electromagnet 42 is separated from the regulating block 40. The regulating block 40 moves toward the initial position under the action of the elastic member 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 aligned with the regulating block 40 contacts the position, the proximity switch 44 triggers the display light to light up, and when the proximity switch 44 does not contact the adjustment block 40, it is assumed by default in this embodiment that the rotation speed of the proximity switch 44 is slow, so the wind speed of the air supply needs to be increased, and the spare rack 33 is accelerated to rotate to the specified position. Similarly, in this embodiment, an electromagnet is provided at the position of the spare pipe 5. When the spare rack 33 rotates to a position perpendicular to the air supply direction, the spare rack 33 needs to be adsorbed and fixed, and the adjustment pipe 38 also needs to be closed, and the spare pipe 5 is enabled to start air supply. At the same time, the non-woven fabric 7 needs to be pulled away and the traction rope 8 is pulled into the range of the spare pipe 5. The spare filter 34 is officially started to work, and the staff can replace the high-efficiency filter 4.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A clean room air supply system, the air supply system is installed outside the operating room, characterized in that: It comprises a housing (1), an air duct module, an air processing module and a control module, wherein the air processing module comprises a coarse-effect filter (2) and a medium-effect filter (3) arranged on the air blower and a high-efficiency filter (4) arranged at the air outlet of the clean room; The air treatment module also includes a backup device for realizing non-stop replacement of the high-efficiency filter (4), the backup device including a backup pipe (5), a valve mechanism, a detection mechanism for detecting dust in the air, a review mechanism for re-checking the dust, and a backup filtering mechanism; One end of the standby pipe (5) is arranged on the housing (1) in front of the high-efficiency filter (4), and the other end is provided with an air supply port connected to the clean room. The valve mechanism is used to realize normal air supply of the standby pipe (5).

2. A clean room air supply system according to claim 1, characterized in that: The detection mechanism comprises a detection frame (6) arranged in the spare pipe (5), a non-woven fabric (7) movably arranged on the detection frame (6), a traction component for traction of 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, wherein the non-woven fabric (7) filters dust and is in a stretched state.

3. A clean room air supply system according to claim 2, characterized in that: 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 portion for realizing reciprocating motion 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.

4. A clean room air supply system according to claim 3, characterized in that: 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 the sliding rod (14) to slide; the sliding rod (14) is fixedly connected to the upper surface of the upper plate (10); the spring (13) is sleeved outside the sliding rod (14), and the two ends are respectively fixedly connected to the detection frame (6) and the upper plate (10); the reciprocating electric push rod (15) is fixed on the detection frame (6) and is used to control the movement of the reciprocating electromagnet (16); the reciprocating electromagnet (16) adsorbs the lower plate (11).

5. The clean room air supply system according to claim 2, characterized in that: The viewing component comprises a light source (18) and a camera (19), wherein the light source (18) and the camera (19) are respectively arranged on both sides of the detection frame (6), and the shooting direction of the camera (19) is perpendicular to the direction of light emitted by the light source (18).

6. The clean room air supply system according to claim 1, characterized in that: 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 impeller is transmission-connected to the rotating rod (20), the axial 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 the rotation of the adsorption rod (21).

7. A clean room air supply system according to claim 6, characterized in that: The dust removal part comprises a dust removal roller, a dust removal motor (23) for controlling the rotation of the dust removal roller, an 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 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); one end of the gravity rod (25) close to the rotating rod (20) is fixedly connected to the second electromagnet (26); the second electromagnet (26) is adsorbed to the rotating rod (20).

8. The clean room air supply system according to claim 5, characterized in that: The review mechanism comprises a review box (28) arranged on the detection frame (6), an adhesive block (29) movably arranged in the review box (28), a driving component for controlling the movement of the adhesive block (29), a marking paper (30) for marking dust on the adhesive block (29), a cleaning member (31) for cleaning dust on the adhesive 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 to a buzzer.

9. A clean room air supply system according to claim 8, characterized in that: 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 component for protecting the standby filter (34), and a power component for controlling the rotation of the standby frame (33); when the standby frame (33) is in an initial state, the plane where the standby filter (34) is located is along the air supply direction.

10. The clean room air supply system according to claim 9, characterized in that: 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 portion 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 axial direction of the second impeller (35) is along the air supply direction, and the first bevel gear (36) and the second impeller (35) are in the same direction.

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