CN116045394B - Positive and negative pressure control system of clean room - Google Patents
Positive and negative pressure control system of clean room Download PDFInfo
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- CN116045394B CN116045394B CN202210838583.XA CN202210838583A CN116045394B CN 116045394 B CN116045394 B CN 116045394B CN 202210838583 A CN202210838583 A CN 202210838583A CN 116045394 B CN116045394 B CN 116045394B
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- 230000007246 mechanism Effects 0.000 claims abstract description 135
- 230000033001 locomotion Effects 0.000 claims abstract description 21
- 239000010410 layer Substances 0.000 claims description 25
- 239000002356 single layer Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000001960 triggered effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 208000015181 infectious disease Diseases 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000002458 infectious effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012678 infectious agent Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
- F24F3/167—Clean rooms, i.e. enclosed spaces in which a uniform flow of filtered air is distributed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Ventilation (AREA)
Abstract
The invention relates to the field of clean rooms, in particular to a clean room positive and negative pressure control system, which comprises a negative suction device and an air inlet, and also comprises an air pressure sensor arranged in the clean room, wherein an air channel adjusting mechanism for adjusting the size of the air inlet is arranged on the air inlet, an unlocking device for pulling a pull plate is arranged on a frame body, the unlocking device comprises a linear pushing mechanism, a conical column, a rotating mechanism and a rotating driving mechanism, the clean room positive and negative pressure control system can collect air pressure values in the clean room through the air pressure sensor according to actual positive and negative pressure requirements, a controller compares the set pressure values with the collected pressure values, and the air inlet quantity and the air exhaust quantity of the air inlet and the negative suction device are adaptively adjusted, so that the air pressure value in the clean room reaches a set range value, the real-time adjustment and control of the positive and negative pressure of the clean room are realized, the second filter is ensured to be uniformly used through controlling the reciprocating motion of the second filter, and the utilization rate of the second filter is improved.
Description
Technical Field
The invention relates to the technical field of clean rooms, in particular to a clean room positive and negative pressure control system.
Background
When the clean room is used, the pressure requirements in the clean room can be different according to different use requirements. If only the working environment is to be ensured to be clean, the positive pressure in the clean room, such as an electronic factory building, is generally kept. If the working environment is to be kept clean and cannot pollute the surrounding environment, negative pressure in the clean room, such as an infectious disease ward or an operating room, is required.
When the clean room requiring negative pressure is used, the filter of the negative pressure device is a core component, and in order to further ensure that an infectious source cannot leak under the negative pressure environment, the bottom of the exhaust fan is provided with a filter in a matching way when the exhaust fan works. But can appear blocking or the not good condition of filter effect after the filter uses for a long time to influence the negative suction effect of negative pressure device, often can make the negative pressure of operating room reduce gradually, cause the infectious agent to discharge from the operating room, make other people have the risk of infection.
Therefore, in order to ensure the filtering effect, after the filter is used for a period of time, the filter must be replaced by a worker, and the service time of the existing filter structure is relatively short, so that the burden of the worker is increased, because the negative suction device is usually installed at the top of the clean room, the replacement is inconvenient, if the filter element is not replaced in time after being out of service, and the outdoor air discharged from the air can be provided with infectious sources or other harmful bacteria.
Disclosure of Invention
The invention aims to provide a positive and negative pressure control system of a clean room.
To achieve the purpose, the invention adopts the following technical scheme:
positive negative pressure control system of toilet, including installing the negative suction device at the toilet and installing and seted up the air intake on toilet lateral wall bottom, air intake department is provided with first filter and can be used to control the wind channel adjustment mechanism of inhaling the amount of wind, its characterized in that, the negative suction device includes air exhauster, second filter, mounting bracket and reciprocal actuating mechanism, and air exhauster fixed mounting is at the top of toilet, is provided with square wind channel on the air exhauster, the top of second filter is laminated with the bottom in square wind channel, and second filter detachable installs on the mounting bracket, reciprocal actuating mechanism fixed mounting is at the top of toilet for drive the mounting bracket and carry out horizontal reciprocating motion, install in the toilet with negative suction device and wind channel adjustment mechanism electrical connection's air pressure sensor.
Further, reciprocating drive mechanism includes drive mechanism, double-deck sprocket, first pivot, push away the axle, the thrust plate, support body and second pivot, drive mechanism fixed mounting is on the air exhauster, drive mechanism's one end is connected with the driving motor of air exhauster, drive mechanism's the other end is connected with one deck of double-deck sprocket, be used for turning into the rotation force of double-deck sprocket with driving motor's rotation force, double-deck sprocket fixed mounting is in the second pivot, the second pivot passes through the rotatable installation of swivel mount on the air exhauster, first pivot passes through the rotatable installation of swivel mount on the support body, be provided with first individual layer sprocket on the one end of first pivot, first individual layer sprocket passes through first chain and is connected with another layer of double-deck sprocket, push away axle fixed mounting on first chain, thrust plate fixed mounting is on the mounting bracket, push away the axle and insert and set up in the thrust plate and supply to push away the gliding bar spout of axle, mounting bracket and support body sliding connection, support body fixed mounting is on the roof of toilet.
Further, the drive mechanism includes third pivot, worm wheel, worm, fourth pivot and second individual layer sprocket, the third pivot is through rotatable installing on the air exhauster of transposition, second individual layer sprocket fixed mounting is in the one end of third pivot, the second individual layer sprocket passes through the second chain and is connected with double-deck sprocket, worm fixed mounting is in the third pivot, the one end fixed connection of worm and fourth pivot, worm and worm wheel meshing, fourth pivot rotatable installing is on the air exhauster, be provided with first bevel gear on the other end of fourth pivot, be provided with on driving motor's the output with first bevel gear meshing driven second bevel gear.
Further, the mounting bracket includes cassette, card frame, first baffle, guide pillar, limiting plate and joint mechanism, be provided with the slide on the outside of card frame, be provided with the slide rail of being connected with the slide on the support body, the second filter card is established on the cassette, first baffle fixed mounting is on the card frame, guide pillar and first baffle sliding connection, the bottom of guide pillar passes through connecting plate and cassette fixed connection, limiting plate fixed mounting is at the top of guide pillar, joint mechanism fixed mounting is on the card frame, the draw-in groove that supplies joint mechanism joint has been seted up on the guide pillar.
Further, the clamping mechanism comprises a triangular clamping block and an elastic pushing mechanism, the elastic pushing mechanism is fixedly arranged on the clamping frame and used for applying elastic force inserted into the clamping groove to the triangular clamping block, the triangular clamping block is fixedly arranged on the elastic pushing mechanism, and a pulling plate is arranged on the elastic pushing mechanism.
Further, the device also comprises an unlocking device for unlocking the pull plate, and when the mounting frame reciprocates to the set times, the mounting frame enables the second filter to be separated from the mounting frame through the unlocking device or triggers the replacement prompting device.
Further, unlocking device includes sharp pushing mechanism, rotary mechanism and rotary driving mechanism, and rotary driving mechanism is used for moving through the straight pushing mechanism of rotatory power drive, and rotary driving mechanism is used for one-way promotion rotary mechanism to rotate, and rotary mechanism connects the counting system, and when the counting system was triggered to predetermineeing the number of times, the second filter was broken away from with the mounting bracket.
Further, a receiving tray is arranged at the top of the clean room below the negative suction device.
The invention has the beneficial effects that: according to the invention, the air pressure value in the clean room can be acquired through the air pressure sensor according to the actual positive and negative pressure requirements, the controller compares the set pressure value with the acquired pressure value, and the air inlet quantity and the air outlet quantity of the air channel adjusting mechanism and the negative suction device are adaptively adjusted, so that the air pressure value in the clean room reaches the set range value, and the real-time adjustment and control of the positive and negative pressure of the clean room are realized.
The second filter is made to reciprocate at the bottom of the exhaust fan through the combination of the transmission mechanism and the linear pushing mechanism while the exhaust fan works, so that the service life of the second filter is prolonged, the lengthening time depends on the length of the second filter, and the second filter is made to reciprocate, so that the waste at the edge of the second filter is avoided, and the utilization rate of the second filter is improved;
when the mounting bracket reciprocates, count through unlocking device, and after reaching the number of times of settlement, make automatic separation between triangle fixture block and the draw-in groove, make the second filter drop or trigger and change suggestion device, the suggestion medical personnel can change the second filter, avoid discharging outdoor gaseous the having the infectious source, and through this kind of mode, the electric putter has been replaced and has promoted the arm-tie and move, so the mode of separation between triangle fixture block and the draw-in groove has been avoided using complicated control process, and because the number of times of movement to the mounting bracket through the sensor is counted, and can break down under the long-term complex work condition of sensor, if break down, be difficult to judge the condition that the second filter used again, can only carry out direct change to the second filter, and the second filter cost is higher, use cost has been increased, consequently, the mode of counting through unlocking device has still reduced use cost.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below.
FIG. 1 is a schematic view of the installation state of the present invention;
FIG. 2 is a schematic perspective view of the suction device after movement;
FIG. 3 is a schematic perspective view of an initial position of the suction device;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a schematic perspective view of a transmission mechanism;
FIG. 6 is a schematic perspective view of a mounting bracket;
FIG. 7 is a partial enlarged view at B of FIG. 6;
FIG. 8 is an exploded perspective view of the mounting bracket;
FIG. 9 is an enlarged view of a portion of FIG. 2 at C;
FIG. 10 is a schematic perspective view of an unlocking device according to the present invention;
FIG. 11 is an exploded perspective view of a linear pushing mechanism;
FIG. 12 is a schematic perspective view of a rotary mechanism;
FIG. 13 is a schematic perspective view of a rotary drive mechanism;
in the figure: 1. an exhaust fan; 2. a second filter; 3. a mounting frame; 3a, a clamping seat; 3b, clamping the frame; 3c, a first guide plate; 3d, a guide post; 3e, limiting plates; 3f, a clamping mechanism; 3f1, a triangular clamping block; 3f2, an elastic pushing mechanism; 3f3, pulling the plate; 4. a reciprocating drive mechanism; 4a, a transmission mechanism; 4a1, a third rotating shaft; 4a2, worm gear; 4a3, a worm; 4a4, a fourth rotating shaft; 4b, double-layer chain wheel; 4c, a first rotating shaft; 4d, pushing the shaft; 4e, pushing the plate; 4f, a frame body; 4h, a second rotating shaft; 5. a linear pushing mechanism; 5a, a second guide plate; 5b, a first square guide post; 5c, a stud; 5d, a solenoid; 6. a conical column; 7. a rotation mechanism; 7a, a third bevel gear; 7b, a fourth bevel gear; 7c, a fifth rotating shaft; 7d, rotating the circular plate; 7e, pushing a column; 8. a rotary driving mechanism; 8a, an extension frame; 8b, a guide seat; 8c, a second square guide post; 8d, triangular pushing blocks; 9. and a receiving tray.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced in size and do not represent the actual product dimensions.
Embodiment one:
referring to the positive negative pressure control system of clean room that fig. 1 shows, including installing the negative suction device in the clean room and installing the air intake on clean room lateral wall bottom, air intake department is provided with first filter and can be used to control the wind channel adjustment mechanism of inhaling the amount of wind, the negative suction device includes air exhauster 1, second filter 2, mounting bracket 3 and reciprocal actuating mechanism 4, air exhauster 1 fixed mounting is at the top of clean room for with indoor gaseous outdoor suction for the clean room inside presents negative pressure state, be provided with square wind channel on the air exhauster 1, the top of second filter 2 is laminated with the bottom in square wind channel, and second filter 2 detachable installs on mounting bracket 3, reciprocal actuating mechanism 4 fixed mounting is at the top of clean room for drive mounting bracket 3 carries out horizontal reciprocating motion, install in the clean room with negative suction device and wind channel adjustment mechanism electrical connection's air pressure sensor.
The positive and negative pressure control system of the clean room can be used according to the actual positive and negative pressure of the clean room, after the air pressure value in the clean room is acquired through the air pressure sensor, the controller compares the set pressure value with the acquired pressure value, the air inlet quantity and the air exhaust quantity of the air channel adjusting mechanism and the negative suction device are adaptively adjusted, the air pressure value in the clean room reaches the set range value, and the real-time adjustment and control of the positive and negative pressure of the clean room are realized.
The air duct adjusting mechanism belongs to the prior art, can adopt equipment such as a butterfly valve and an air port air brake in the prior art, and is matched with a corresponding electric actuator such as a motor to drive the butterfly valve or the air port air brake, so that the air inlet quantity of an air inlet is changed. The air pressure sensor can be electrically connected with an exhaust fan motor of the negative suction device and an electric actuator of the air channel adjusting mechanism through the controller, so that the controller can control the air discharge quantity and the air intake quantity of the negative suction device and the air inlet according to the pressure value acquired by the air pressure sensor, and the control process belongs to the prior art.
It should be noted that, the first filter at the air inlet is generally at the bottom of the side wall of the clean room, and the service life or replacement of the first filter is relatively simple and convenient compared with that of the second filter, so that the conventional filter and the mounting structure are adopted.
As shown in fig. 2, the negative suction device comprises an exhaust fan 1, a second filter 2, a mounting frame 3 and a reciprocating driving mechanism 4, wherein the exhaust fan 1 is fixedly installed at the top of a clean room and used for sucking indoor air out of the clean room to enable the interior of the clean room to be in a negative pressure state, a square air channel is arranged on the exhaust fan 1, a wind speed sensor is arranged in the square air channel, the wind speed sensor can be used for detecting the passing air flow rate at different time points under the same working frequency of the exhaust fan 1, the condition that the second filter 2 is blocked is further judged, and the judgment result is fed back to a display screen so as to prompt a user whether the second filter 2 needs to be replaced in time, the top of the second filter 2 is attached to the bottom of the square air channel, the phenomenon that the air sucked by the exhaust fan 1 directly enters the exhaust fan 1 is avoided, the second filter 2 is detachably installed at the top of the clean room and used for driving the mounting frame 3 to perform horizontal reciprocating motion, and the replacement times of the second filter 2 are reduced.
In the invention, as shown in fig. 3 and 4, the reciprocating driving mechanism 4 comprises a transmission mechanism 4a, a double-layer chain wheel 4b, a first rotating shaft 4c, a pushing shaft 4d, a pushing plate 4e, a frame body 4f and a second rotating shaft 4h, wherein the transmission mechanism 4a is fixedly arranged on the exhaust fan 1, one end of the transmission mechanism 4a is connected with a driving motor of the exhaust fan 1, the other end of the transmission mechanism 4a is connected with one layer of the double-layer chain wheel 4b and is used for converting the rotating force of the driving motor into the rotating force of the double-layer chain wheel 4b, the double-layer chain wheel 4b is fixedly arranged on the second rotating shaft 4h, the second rotating shaft 4h is rotatably arranged on the exhaust fan 1 through a swivel mount, the first rotating shaft 4c is rotatably arranged on the frame body 4f through the swivel mount, one end of the first rotating shaft 4c is provided with a first single-layer chain wheel, the pushing shaft 4d is fixedly arranged on the first chain, the pushing plate 4e is fixedly arranged on the third layer, the pushing plate 4e is internally provided with a sliding groove for inserting the pushing shaft 4d into the sliding frame body 4f, and is fixedly arranged on the sliding frame body 4 f.
Through driving motor works, will make driving motor's rotation force convert into the power of drive mechanism 4a, drive mechanism 4a will drive double-deck sprocket 4b and rotate, double-deck sprocket 4b will drive first individual layer sprocket through first chain and rotate, in the rotatory in-process of first chain, first chain will drive push away axle 4d and move, push away axle 4d will drive push away board 4e and move, make push away board 4e drive mounting bracket 3 carry out reciprocating motion, make mounting bracket 3 drive second filter 2 and move, and then make second filter 2 constantly switch over the position in the bottom of air exhauster 1, through this kind of mode of switching motion, make the live time of a second filter 2 longer, the length of extension time is decided according to the length of second filter 2, and because traditional second filter 2 uses, because the wind-force of center department is biggest, often make second filter 2 middle part by the completion, edge can't use, extravagant second filter 2's application range, and through second filter 2 reciprocating motion, make second filter 2 carry out reciprocating motion, make second filter 2 by the bottom constantly switch over the position, through this kind of switching motion mode, make the second filter 2 by 3 at the side edge and carry out the spacing mode of sliding frame on 3 at the support frame, and the sliding frame is connected in the motion, the 3 f.
In the invention, as shown in fig. 5, a transmission mechanism 4a comprises a third rotating shaft 4a1, a worm wheel 4a2, a worm 4a3, a fourth rotating shaft 4a4 and a second single-layer sprocket, wherein the third rotating shaft 4a1 is rotatably arranged on an exhaust fan 1 through a rotary seat, the second single-layer sprocket is fixedly arranged at one end of the third rotating shaft 4a1, the second single-layer sprocket is connected with a double-layer sprocket 4b through a second chain, the worm wheel 4a2 is fixedly arranged on the third rotating shaft 4a1, the worm 4a3 is fixedly connected with one end of the fourth rotating shaft 4a4, the worm 4a3 is meshed with the worm wheel 4a2, the fourth rotating shaft 4a4 is rotatably arranged on the exhaust fan 1, a first bevel gear is arranged at the other end of the fourth rotating shaft 4, and a second bevel gear meshed with the first bevel gear is arranged at the output end of a driving motor. In the process that the driving motor drives the exhaust fan 1 to work, the driving motor drives the fourth rotating shaft 4a4 to rotate through the first bevel gear and the second bevel gear, the fourth rotating shaft 4a4 drives the worm 4a3 to rotate, the worm 4a3 drives the third rotating shaft 4a1 to rotate through the worm wheel 4a2, the third rotating shaft 4a1 drives the second single-layer chain wheel to rotate, the second single-layer chain wheel drives the double-layer chain wheel 4b to rotate through the chain, the effect that the double-layer chain wheel 4b is driven to move is achieved in the exhaust process, and the reciprocating driving mechanism 4 drives the mounting frame 3 to reciprocate, and the mounting frame 3 drives the second filter 2 to reciprocate.
The power of the driving motor is used for driving the second filter 2 to reciprocate, so that the effects that one driving source is reduced, equipment is convenient to control, the control precision of the equipment is improved, the structure of the worm gear is used for converting the high rotating speed of the driving motor into the low rotating speed and then driving the second filter to move, the second filter can move relatively slowly and stably, the rotating ring speed of the fan on the exhaust fan 1 in unit time is in direct proportion to the reciprocating distance of the second filter 2, after the exhaust fan 1 changes speed, the rotating ring speed is in direct proportion to the reciprocating distance of the second filter 2, namely the moving speed of the second filter 2 is in direct proportion to the exhaust air quantity of the exhaust fan 1, the second filter 2 is always kept to be uniformly used, after one area of the second filter 2 fails, the filtering effect of the other area is still in good condition, and the utilization efficiency of the second filter 2 is improved, because after the local area of the whole second filter 2 is replaced, the whole second filter 2 fails.
As shown in fig. 6-8, further, in this embodiment, the mounting frame 3 includes a clamping seat 3a, a clamping frame 3b, a first guide plate 3c, a guide post 3d, a limiting plate 3e and a clamping mechanism 3f, a sliding seat is disposed on the outer side of the clamping frame 3b, a sliding rail connected with the sliding seat is disposed on the frame 4f, the second filter 2 is clamped on the clamping seat 3a, the first guide plate 3c is fixedly mounted on the clamping frame 3b, the guide post 3d is slidably connected with the first guide plate 3c, the bottom of the guide post 3d is fixedly connected with the clamping seat 3a through a connecting plate, the limiting plate 3e is fixedly mounted on the top of the guide post 3d, the clamping mechanism 3f is fixedly mounted on the clamping frame 3b, and a clamping groove for clamping the clamping mechanism 3f is disposed on the guide post 3 d. When the second filter 2 needs to be replaced, the clamping mechanism 3f can be separated from the clamping groove, the second filter 2 drives the clamping seat 3a to move downwards through gravity, the clamping seat 3a drives the guide pillar 3d to slide along the first guide plate 3c, and the descending position of the second filter 2 is limited through the limiting plate 3 e.
In the present invention, as shown in fig. 7, the clamping mechanism 3f includes a triangular clamping block 3f1 and an elastic pushing mechanism 3f2, the elastic pushing mechanism 3f2 is fixedly mounted on the clamping frame 3b, for applying an elastic force inserted into the clamping groove to the triangular clamping block 3f1, the triangular clamping block 3f1 is fixedly mounted on the elastic pushing mechanism 3f2, and the pulling plate 3f3 is provided on the elastic pushing mechanism 3f 2. When the second filter 2 needs to be replaced, the pulling plate 3f3 is pulled by a worker, so that the pulling plate 3f3 drives the triangular clamping block 3f1 to be pulled out of the clamping groove, and the second filter 2 can drive the clamping seat 3a to move downwards.
Principles of the embodiment: after the exhaust fan 1 is opened, the driving motor on the exhaust fan 1 drives the fan on the exhaust fan 1 to exhaust air, so that negative pressure is formed inside the clean room, and when the driving motor works, the driving motor drives the fourth rotating shaft 4a4 to rotate through the first bevel gear and the second bevel gear, the fourth rotating shaft 4a4 drives the worm 4a3 to rotate, the worm 4a3 drives the third rotating shaft 4a1 to rotate through the worm wheel 4a2, and the rotation speed of the third rotating shaft 4a1 is smaller than the rotation speed of the driving motor, but the transmission ratio between the two is fixed, namely the rotation speed of the two is linearly changed, so that the air exhaust speed is in direct proportion to the movement speed of the second filter 2, the second filter 2 is uniformly used to the greatest extent, and the phenomenon of local failure can not occur. The third rotating shaft 4a1 drives the second single-layer chain wheel to rotate, so that the second single-layer chain wheel drives the double-layer chain wheel 4b to rotate through the chain, and the effect of driving the double-layer chain wheel 4b to move in the air exhausting process is achieved.
When the double-layer chain wheel 4b moves, the first single-layer chain wheel is driven to rotate through the first chain, in the process of rotating the first chain, the first chain drives the pushing shaft 4d to move, the pushing shaft 4d drives the pushing plate 4e to move, the pushing plate 4e drives the mounting frame 3 to reciprocate, the mounting frame 3 drives the second filter 2 to move, and then the second filter 2 is enabled to continuously switch positions at the bottom of the exhaust fan 1, the service time of one second filter 2 is prolonged in a mode of the switching movement, and the prolonged time depends on the length of the second filter 2.
Embodiment two:
aiming at different use environments, an improvement scheme is provided, and the device is different from the embodiment in that as shown in fig. 2, 9 and 10, an unlocking device for pulling a pull plate 3f3 is arranged on a frame body 4f, the unlocking device comprises a linear pushing mechanism 5, a conical column 6, a rotating mechanism 7 and a rotating driving mechanism 8, the linear pushing mechanism 5 is fixedly arranged on the frame body 4f and used for horizontally pushing the conical column 6, the conical column 6 pushes the pull plate 3f3 to move outwards, the conical column 6 is fixedly arranged on the linear pushing mechanism 5, the rotating mechanism 7 is fixedly arranged on the frame body 4f and used for driving the linear pushing mechanism 5 to move through rotating force, and the rotating driving mechanism 8 is fixedly arranged on the frame body 3 and used for unidirectionally pushing the rotating mechanism 7 to rotate. When the mounting frame 3 reciprocates, the mounting frame 3 drives the rotary driving mechanism 8 to move, when the rotary driving mechanism 8 moves towards the rotary mechanism 7, the rotary driving mechanism 8 drives the rotary mechanism 7 to rotate, the rotary mechanism 7 drives the linear pushing mechanism 5 to move through the rotary force, the linear pushing mechanism 5 horizontally pushes the conical column 6, the conical column 6 moves towards the pulling plate 3f3, and the mounting frame 3 drives the rotary driving mechanism 8 to reciprocate once every time, and the linear pushing mechanism 5 pushes the conical column 6 to move a set distance. After the mounting frame 3 reciprocates to the set times, the conical column 6 starts to be in contact with the pulling plate 3f3, and the pulling plate 3f3 is utilized to trigger a proximity switch arranged on the conical column 6, so as to trigger a prompting device (such as a buzzer or a warning lamp) electrically connected with the proximity switch to prompt a worker to replace.
At this time, the staff can carry out manual operation, separates the draw-in groove of triangle fixture block 3f1 and guide pillar 3d and carries out the change to the second filter, also can continue letting rotary drive mechanism 8 continue reciprocating motion, makes awl post 6 will promote to the draw-in groove separation of triangle fixture block 3f1 and guide pillar 3d for the second filter 2 can drop from the mounting bracket, and then changes.
Because the proximity switch is triggered after the conical column 6 is contacted with the pulling plate 3f3, the rotary driving mechanism 8 continues to reciprocate until the relative sufficient time exists between the automatic separation of the triangular clamping block 3f1 and the clamping groove of the guide column 3d, and at least the second filter is required to go back and forth, so that the time is enough to prompt the staff to perform corresponding operation, and the normal use of the clean room is ensured.
In the invention, as shown in fig. 11, the linear pushing mechanism 5 comprises a second guide plate 5a, a first square guide post 5b, a stud 5c and a screw tube 5d, wherein the second guide plate 5a is fixedly arranged on a frame 4f, the first square guide post 5b is in sliding connection with the second guide plate 5a, a square sliding hole for sliding the first square guide post 5b is formed in the second guide plate 5a, the stud 5c is fixedly connected with the first square guide post 5b, the stud 5c is in meshed connection with the screw tube 5d, and the screw tube 5d is rotatably arranged on the frame 4f through a swivel joint. Through the rotation of the spiral tube 5d, the spiral tube 5d rotates to push the stud 5c, the stud 5c pushes the first square guide post 5b to slide on the second guide plate 5a, the first square guide post 5b pushes the conical column 6 to move, after the second filter 2 is replaced, the spiral tube 5d can be reversely rotated by a worker through an electric tool, the conical column 6 is attached to the second guide plate 5a again, the second filter 2 for the next time is controlled to drop, and a hexagonal plate can be arranged at the tail of the spiral tube 5d for the electric tool.
In the present invention, as shown in fig. 12, the rotation mechanism 7 includes a third bevel gear 7a, a fourth bevel gear 7b, a fifth rotation shaft 7c, a rotation circular plate 7d, and a plurality of push posts 7e mounted on the rotation circular plate 7d, the third bevel gear 7a is fixedly connected with the screw 5d, the fifth rotation shaft 7c is rotatably mounted on the frame 4f by a swivel mount, the fourth bevel gear 7b is fixedly mounted on one end of the fifth rotation shaft 7c, and the rotation circular plate 7d is fixedly mounted on the other end of the fifth rotation shaft 7 c. The push column 7e is pushed to move by the rotary driving mechanism 8, the push column 7e drives the rotary circular plate 7d to rotate, the rotary circular plate 7d drives the fifth rotating shaft 7c to rotate, the fifth rotating shaft 7c drives the third bevel gear 7a to rotate by the fourth bevel gear 7b, the third bevel gear 7a drives the spiral tube 5d to rotate, and the rotary driving mechanism 8 does not push the push column 7e to move when the rotary driving mechanism 8 resets.
In this embodiment, the number and positions of the push posts 7e on the rotating mechanism 7 can be adjusted according to different actual use conditions, such as different cleanliness conditions in the clean room, so as to change the number of reciprocating movements of the mounting frame 3 for triggering the proximity switch on the cone post 6.
In the present invention, as shown in fig. 13, the rotation driving mechanism 8 includes an extension frame 8a, a guide seat 8b, a second square guide post 8c and a triangular push block 8d, the extension frame 8a is fixedly installed on the installation frame 3, the guide seat 8b is fixedly installed on the extension frame 8a, the second square guide post 8c is slidably connected with the guide seat 8b, the triangular push block 8d is fixedly installed at the bottom end of the second square guide post 8c, so that the plane side of the triangular push block 8d is used for pushing the push post 7e to rotate, and the top of the second square guide post 8c is provided with a limiting plate. When the rotary driving mechanism 8 moves towards the rotary mechanism 7, the plane side of the triangular push block 8d is contacted with the topmost push column 7e, the triangular push block 8d pushes the push column 7e to rotate due to the continuous movement of the rotary driving mechanism 8, when the rotary driving mechanism 8 moves reversely, the inclined plane of the triangular push block 8d is contacted with the topmost push column 7e, and the inclined plane of the triangular push block 8d cannot push the push column 7e to rotate due to the large friction force between the third bevel gear 7a and the fourth bevel gear 7b, so that the triangular push block 8d drives the second square guide column 8c to slide downwards to avoid the push column 7e, and even if the triangular push block 8d pushes the push column 7e slightly, the topmost push column 7e is pushed to rotate to a set position when the triangular push block 8d pushes next time.
As shown in fig. 1, a receiving tray 9 is arranged at the top of the clean room below the negative suction device, and fine impurities, particles and the like falling from the negative suction device in the movement process can be received through the receiving tray 9, so that the falling of the small impurities, the particles and the like in the clean room is prevented from influencing the operation or the operation of the equipment in the clean room.
Principles of the embodiment: when the mounting frame 3 reciprocates, the mounting frame 3 will drive the rotary driving mechanism 8 to move, when the rotary driving mechanism 8 moves towards the rotary mechanism 7, the plane side of the triangular push block 8d will contact with the topmost push post 7e, due to the continued movement of the rotary driving mechanism 8, the triangular push block 8d will push the push post 7e to rotate, when the rotary driving mechanism 8 moves reversely, the inclined plane of the triangular push block 8d will contact with the topmost push post 7e, due to the large friction force between the third bevel gear 7a and the fourth bevel gear 7b, the inclined plane of the triangular push block 8d will not push the push post 7e to rotate, so that the triangular push block 8d drives the second square guide post 8c to slide, avoiding the push post 7e, even if the triangular push block 8d slightly pushes the push post 7e, the topmost push post 7e will be pushed to rotate to a set position when the triangular push block 8d pushes next time.
The push column 7e is pushed to move by the rotary driving mechanism 8, the push column 7e drives the rotary circular plate 7d to rotate, the rotary circular plate 7d pushes the fifth rotating shaft 7c to rotate, the fifth rotating shaft 7c pushes the third bevel gear 7a to rotate by the fourth bevel gear 7b, and the third bevel gear 7a pushes the spiral tube 5d to rotate.
Through the rotation of the spiral tube 5d, the spiral tube 5d rotates to push the stud 5c, the stud 5c pushes the first square guide post 5b to slide on the second guide plate 5a, the first square guide post 5b pushes the conical post 6 to move, the mounting frame 3 drives the rotary driving mechanism 8 to reciprocate once every time, the linear pushing mechanism 5 pushes the conical post 6 to move for a set distance, after the mounting frame 3 reciprocates for a set number of times, the conical post 6 starts to contact with the pull plate 3f3, along with the continuous reciprocating movement of the rotary driving mechanism 8, after the set number of times is reached, the conical post 6 is pushed to separate the triangular clamping block 3f1 from the clamping groove of the guide post 3d, and then the second filter 2 is controlled to drop or an alarm device is triggered for a set number of times, so that medical staff is prompted to replace the second filter 2.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (6)
1. The positive and negative pressure control system of the clean room comprises a negative suction device arranged in the clean room and an air inlet arranged on the bottom of the side wall of the clean room, wherein the air inlet is provided with a first filter and an air channel adjusting mechanism capable of controlling the air suction quantity, the negative suction device is characterized by comprising an exhaust fan (1), a second filter (2), a mounting frame (3) and a reciprocating driving mechanism (4), the exhaust fan (1) is fixedly arranged at the top of the clean room, a square air channel is arranged on the exhaust fan (1), the top of the second filter (2) is attached to the bottom of the square air channel, the second filter (2) is detachably arranged on the mounting frame (3), the reciprocating driving mechanism (4) is fixedly arranged at the top of the clean room and used for driving the mounting frame (3) to do horizontal reciprocating motion, the interior of the clean room is provided with an air pressure sensor electrically connected with the negative suction device and the air channel adjusting mechanism, the reciprocating driving mechanism (4) comprises a transmission mechanism (4 a), a double-layer chain wheel (4 b), a pushing shaft (4 d), a pushing plate (4 e), a pushing plate (4 f) and a motor (4 h) are fixedly connected with the other end of the transmission mechanism (4 a) of the exhaust fan (1), the double-layer chain wheel (4 b) is fixedly arranged on the second rotating shaft (4 h), the second rotating shaft (4 h) is rotatably arranged on the exhaust fan (1) through a rotary seat, the first rotating shaft (4 c) is rotatably arranged on the frame body (4 f) through the rotary seat, a first single-layer chain wheel is arranged at one end of the first rotating shaft (4 c), the first single-layer chain wheel is connected with the other layer of the double-layer chain wheel (4 b) through a first chain, the pushing shaft (4 d) is fixedly arranged on the first chain, the pushing plate (4 e) is fixedly arranged on the mounting frame (3), the pushing shaft (4 d) is inserted into the pushing plate (4 e), a strip-shaped sliding groove for the pushing shaft (4 d) to slide is formed in the pushing plate (4 e), the mounting frame (3) is in sliding connection with the frame body (4 f), and the frame body (4 f) is fixedly arranged on the top wall of the clean room;
the mounting frame (3) comprises a clamping seat (3 a), a clamping frame (3 b), a first guide plate (3 c), a guide column (3 d), a limiting plate (3 e) and a clamping mechanism (3 f), wherein a sliding seat is arranged on the outer side of the clamping frame (3 b), a sliding rail connected with the sliding seat is arranged on a frame body (4 f), a second filter (2) is clamped on the clamping seat (3 a), the first guide plate (3 c) is fixedly arranged on the clamping frame (3 b), the guide column (3 d) is in sliding connection with the first guide plate (3 c), the bottom of the guide column (3 d) is fixedly connected with the clamping seat (3 a) through a connecting plate, the limiting plate (3 e) is fixedly arranged at the top of the guide column (3 d), the clamping mechanism (3 f) is fixedly arranged on the clamping frame (3 b), and a clamping groove for clamping the clamping mechanism (3 f) is formed in the guide column (3 d);
the control system further comprises an unlocking device, and when the mounting frame (3) reciprocates for a set number of times, the mounting frame (3) enables the second filter (2) to be separated from the mounting frame (3) through the unlocking device or triggers the replacement prompting device.
2. The positive and negative pressure control system of a clean room according to claim 1, characterized in that the transmission mechanism (4 a) comprises a third rotating shaft (4 a 1), a worm wheel (4 a 2), a worm (4 a 3), a fourth rotating shaft (4 a 4) and a second single-layer sprocket, the third rotating shaft (4 a 1) is rotatably mounted on the exhaust fan (1) through a swivel mount, the second single-layer sprocket is fixedly mounted at one end of the third rotating shaft (4 a 1), the second single-layer sprocket is connected with the double-layer sprocket (4 b) through a second chain, the worm (4 a 3) is fixedly mounted on the third rotating shaft (4 a 1), the worm (4 a 3) is fixedly connected with one end of the fourth rotating shaft (4 a 4), the worm (4 a 3) is meshed with the worm wheel (4 a 2), the fourth rotating shaft (4 a 4) is rotatably mounted on the exhaust fan (1), a first bevel gear is arranged at the other end of the fourth rotating shaft (4 a), and a second bevel gear which is meshed with the first bevel gear is arranged at the output end of the driving motor.
3. The positive and negative pressure control system of a clean room according to claim 2, wherein the clamping mechanism (3 f) comprises a triangular clamping block (3 f 1) and an elastic pushing mechanism (3 f 2), the elastic pushing mechanism (3 f 2) is fixedly installed on the clamping frame (3 b) and used for applying an elastic force inserted into the clamping groove to the triangular clamping block (3 f 1), the triangular clamping block (3 f 1) is fixedly installed on the elastic pushing mechanism (3 f 2), and a pull plate (3 f 3) is arranged on the elastic pushing mechanism (3 f 2).
4. A clean room positive and negative pressure control system according to claim 3, characterized in that the unlocking means are used for unlocking the pulling plate (3 f 3).
5. The positive and negative pressure control system of a clean room according to claim 4, characterized in that the unlocking means comprises a linear pushing mechanism (5), a rotating mechanism (7) and a rotating driving mechanism (8), the rotating mechanism (7) is used for driving the linear pushing mechanism (5) to move through a rotating force, the rotating driving mechanism (8) is used for pushing the rotating mechanism (7) to rotate in a unidirectional way, the rotating mechanism (7) is connected with a counting system, and when the counting system is triggered to a preset number of times, the second filter (2) is separated from the mounting frame (3).
6. The positive and negative pressure control system of a clean room according to claim 5, characterized in that a receiving tray (9) is arranged at the top of the clean room below the suction device.
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| CN202210838583.XA CN116045394B (en) | 2022-07-18 | 2022-07-18 | Positive and negative pressure control system of clean room |
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| CN202210838583.XA CN116045394B (en) | 2022-07-18 | 2022-07-18 | Positive and negative pressure control system of clean room |
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| CN116045394B true CN116045394B (en) | 2023-10-20 |
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| CN112776927A (en) * | 2021-02-08 | 2021-05-11 | 福州高科新技术开发有限公司 | Hand-held cleaning device |
| KR102254161B1 (en) * | 2020-05-21 | 2021-05-21 | 셀포트 주식회사 | Negative pressure and positive pressure combined use portable hospital room system |
| CN216522111U (en) * | 2021-12-23 | 2022-05-13 | 大连爱尔佳净化工程技术有限公司 | Multi-room pressure difference adjusting device for clean room |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB679077A (en) * | 1949-09-10 | 1952-09-10 | Pulverizing Machinery Company | Improvements in reversing drive mechanism for cleaning-air tubes in self-cleaning filters |
| KR20030092942A (en) * | 2002-05-31 | 2003-12-06 | 주식회사 신성이엔지 | Apparatus for controlling flow velocity of air passing through an filter unit for clean room |
| CN107174872A (en) * | 2016-03-11 | 2017-09-19 | 刘佳承 | A kind of air filter |
| CN108954550A (en) * | 2018-06-22 | 2018-12-07 | 安徽科创新能源科技有限责任公司 | A kind of gymnasium air freshener |
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| KR102254161B1 (en) * | 2020-05-21 | 2021-05-21 | 셀포트 주식회사 | Negative pressure and positive pressure combined use portable hospital room system |
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| CN116045394A (en) | 2023-05-02 |
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Address after: No. 98, Donggu Road, Tunnan Village, Wujiang Economic and Technological Development Zone (Tongli Town), Suzhou City, Jiangsu Province 215216 Applicant after: Suzhou Zhongwei Baojia Purification Technology Co.,Ltd. Address before: No. 98, Donggu Road, Tunnan Village, Wujiang Economic and Technological Development Zone (Tongli Town), Suzhou City, Jiangsu Province 215216 Applicant before: Suzhou Zhongwei Baojia Construction Engineering Co.,Ltd. |
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Denomination of invention: Clean room positive and negative pressure control system Effective date of registration: 20231228 Granted publication date: 20231020 Pledgee: Bank of Suzhou Co.,Ltd. Wujiang sub branch Pledgor: Suzhou Zhongwei Baojia Purification Technology Co.,Ltd. Registration number: Y2023980075144 |