CN116499059B - Ventilation backflow preventing device for laboratory - Google Patents
Ventilation backflow preventing device for laboratory Download PDFInfo
- Publication number
- CN116499059B CN116499059B CN202310769434.7A CN202310769434A CN116499059B CN 116499059 B CN116499059 B CN 116499059B CN 202310769434 A CN202310769434 A CN 202310769434A CN 116499059 B CN116499059 B CN 116499059B
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- air
- connecting shaft
- ventilation
- backflow prevention
- piece
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- 238000009423 ventilation Methods 0.000 title claims abstract description 50
- 230000002265 prevention Effects 0.000 claims abstract description 26
- 238000005192 partition Methods 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 230000000903 blocking effect Effects 0.000 claims description 18
- 210000001503 joint Anatomy 0.000 claims description 12
- 238000000889 atomisation Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 24
- 239000000645 desinfectant Substances 0.000 description 11
- 239000007787 solid Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000249 desinfective effect Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
-
- 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
-
- 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
- F24F13/02—Ducting arrangements
-
- 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
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/003—Ventilation in combination with air cleaning
-
- 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
- F24F8/183—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 by centrifugal separation, e.g. using vortices
-
- 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
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
-
- 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
Abstract
The application discloses a ventilation backflow preventing device for a laboratory, and belongs to the technical field of ventilation backflow prevention. The device comprises a ventilation pipe body, wherein a backflow prevention assembly is arranged in the ventilation pipe body and is close to one side of an air inlet pipe, and a separation mechanism is arranged above the backflow prevention assembly; the backflow prevention assembly comprises a connecting cylinder, a plurality of air inlets are formed in the side wall of the connecting cylinder, and partition plates are rotatably connected to the inner sides of the air inlets; the separating mechanism comprises a connecting shaft, a plurality of spiral sheets are arranged on the connecting shaft, and a driving mechanism is arranged on one side, close to the upper end, of the connecting shaft. According to the application, the separation mechanism is arranged, and the spiral sheets rotate, so that particles contained in the air are thrown to the inner wall of the ventilation pipe body, the air rotates in a plurality of different directions through the arrangement of the spiral sheets, and air flows rotating in different directions collide with each other, so that the particles contained in the air are more easily thrown out and fall.
Description
Technical Field
The application relates to the technical field of ventilation and backflow prevention, in particular to a ventilation and backflow prevention device for a laboratory.
Background
The laboratory is a place for laboratory work of scientific researchers, and because experiments and researches are often performed in the laboratory, the laboratory maintains a good ventilation environment, and thus ventilation treatment is required for the laboratory. In order for laboratory staff not to inhale or ingest some toxic, pathogenic or unidentified substances and organisms, good ventilation should be provided in the laboratory. To prevent the absorption of some vapors, gases and particulates (smoke, soot, dust and aerosols), the contaminants must be removed by means of a fume hood, hood or local ventilation. In the existing fume hood, in the waste gas treatment process, the phenomenon of gas backflow exists, and in view of the phenomenon, we propose a ventilation backflow prevention device for a laboratory.
Disclosure of Invention
The application aims to provide a ventilation backflow preventing device for a laboratory, which is used for solving the problems in the background technology:
in order to achieve the above purpose, the present application provides the following technical solutions:
the ventilation backflow preventing device for the laboratory comprises a ventilation pipe body, wherein an air inlet pipe is arranged on one side of the ventilation pipe body, an air outlet is formed in the top of the ventilation pipe body, a backflow preventing assembly is arranged on one side, close to the air inlet pipe, of the ventilation pipe body, and a separating mechanism is arranged above the backflow preventing assembly;
the backflow prevention assembly comprises a connecting cylinder, a groove is formed in the top surface of the connecting cylinder, a plurality of air inlets are formed in the side wall of the connecting cylinder, the air inlets are communicated with the groove, a partition plate is rotatably connected to the inner side of the air inlets, a movable piece is arranged in the groove, a plugging piece is arranged above the groove, and the movable piece is connected with the plugging piece;
the separating mechanism comprises a connecting shaft, a plurality of spiral sheets are arranged on the connecting shaft, a driving mechanism is arranged on one side, close to the upper end, of the connecting shaft, and the driving mechanism is used for driving the connecting shaft to rotate.
Preferably, a pushing piece is arranged on one side of the partition plate on the inner wall of the connecting cylinder, one end of the pushing piece is rotatably connected to the inner wall of the connecting cylinder, and the other end of the pushing piece is in contact with the partition plate.
Preferably, the movable piece comprises a supporting rod, a spring is sleeved outside the supporting rod, a moving block is connected above the spring, the supporting rod is connected with the moving block in a sliding mode, and the moving block is connected with the plugging piece.
Preferably, the side wall of the plugging piece is an inclined surface, and the inclined surface is matched with the groove.
Preferably, the pushing member comprises an elastic piece, one end of the elastic piece is connected with the inner wall of the connecting cylinder, and the other end of the elastic piece is contacted with the partition plate near the lower end.
Preferably, the connecting shaft is of a tubular structure with a hollow inside, a plurality of first atomization spray heads are arranged on the connecting shaft, the upper end of the connecting shaft is rotationally connected with a conveying pipe, and the conveying pipe extends to the outer side of the ventilation pipe body.
Preferably, the driving mechanism comprises a motor, a fixing frame is arranged in the ventilation pipe body, the motor is arranged on the fixing frame, a first gear is connected to an output shaft of the motor, a second gear is sleeved on the connecting shaft, the first gear is meshed with the second gear, the connecting shaft is located below the second gear and is rotationally connected with a support, and the support is connected with the fixing frame.
Preferably, the first guide plate and the second guide plate are respectively arranged at two ends of the connecting shaft, and the first guide plate and the second guide plate are both in rotary connection with the connecting shaft.
Preferably, a connecting pipe is arranged on the end part of the air inlet pipe in a penetrating way, and a second atomizing nozzle is arranged at the end part of the connecting pipe, which is positioned at the inner side of the air inlet pipe.
Preferably, the second atomizing nozzle is provided with a butt joint pipe, the butt joint pipe is rotationally connected with the connecting pipe, and blades distributed in an annular equidistant mode are arranged in the butt joint pipe.
Compared with the prior art, the application has the beneficial effects that:
(1) The application prevents the air entering the ventilation pipe body from flowing back by arranging the backflow prevention component, and is used for disinfecting and purifying the air in the ventilation pipe body and separating solid particles in the air by arranging the separation mechanism; when air flows upwards in the groove, the air pushes the blocking piece to move upwards, the air flows to the separating mechanism from a gap between the blocking piece and the groove, when air above the separating mechanism flows back, the blocking piece is stressed and moves towards the inner side of the groove to be in contact with the groove, so that the air cannot flow back. The air can be rotated in different directions by rotating the spiral sheet, so that the particles in the air are thrown out, and the separation of the particles in the air is completed. The air is enabled to rotate towards a plurality of different directions through the arrangement of the spiral sheets, and collision can be generated between air flows rotating in different directions, so that particles contained in the air are more easily thrown out and fall down.
(2) According to the application, when no air enters the separating plate, a certain thrust is provided for the separating plate through the arrangement of the pushing piece, the entering air is prevented from flowing out, the first guide plate is convenient for blocking the particles in the air when the connecting shaft and the spiral piece rotate to separate the particles, the particles flow down along the pipe wall, the second guide plate is arranged for collecting the flowing particles at the edge of the second guide plate, the cleaning is convenient, and the particles are prevented from flowing into a cavity below the second guide plate. The atomized disinfectant is sprayed to the air entering the air inlet pipe through the arrangement of the second atomization nozzle, and meanwhile, the disinfectant can be heavy due to the fact that particles in the air are stuck to the disinfectant, and the subsequent separation mechanism is convenient for separating the particles in the air.
Drawings
FIG. 1 is a schematic view of the overall structure of a ventilation and backflow prevention device used in a laboratory of the present application;
FIG. 2 is a schematic cross-sectional view of a ventilation backflow prevention device for laboratory use of the present application;
FIG. 3 is a schematic view of the anti-backflow assembly of the present application;
FIG. 4 is a schematic diagram of a separating mechanism according to the present application;
FIG. 5 is a schematic cross-sectional view of a connecting tube according to the present application.
The reference numerals in the figures illustrate: 1. a vent body; 101. an air inlet pipe; 102. an air outlet; 2. a backflow prevention assembly; 201. a connecting cylinder; 202. an air inlet; 203. a partition plate; 204. a pushing member; 205. a groove; 206. a support rod; 207. a spring; 208. a moving block; 209. a blocking member; 3. a separation mechanism; 301. a connecting shaft; 302. a spiral sheet; 303. a first atomizer; 304. a first guide plate; 305. a second guide plate; 4. a delivery tube; 5. a motor; 6. a fixing frame; 7. a first gear; 8. a second gear; 9. a bracket; 10. a connecting pipe; 11. a second atomizer; 12. a butt joint pipe; 13. and (3) a blade.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments.
Example 1
Referring to fig. 1-5, a ventilation backflow prevention device for a laboratory comprises a ventilation pipe body 1, wherein an air inlet pipe 101 is arranged at one side of the ventilation pipe body 1, an air outlet 102 is arranged at the top of the ventilation pipe body 1, a backflow prevention component 2 is arranged at one side, close to the air inlet pipe 101, of the ventilation pipe body 1 to prevent air entering the ventilation pipe body 1 from flowing back, and a separation mechanism 3 is arranged above the backflow prevention component 2 and is used for disinfecting and purifying air in the ventilation pipe body 1 and separating solid particles in the air;
the backflow prevention assembly 2 comprises a connecting cylinder 201, a groove 205 is formed in the top surface of the connecting cylinder 201, a plurality of air inlets 202 are formed in the side wall of the connecting cylinder 201, the air inlets 202 are communicated with the groove 205, air entering from an air inlet pipe 101 enters the groove 205 through the air inlets 202, a partition plate 203 is rotationally connected to the inner side of the air inlets 202, a circle of protrusions are arranged on the inner wall of the outer side of the air inlets 202, the protrusions are in contact with the edges of the partition plate 203, the partition plate 203 is limited, the partition plate 203 can only rotationally open a certain angle to the inner side, backflow of air can be prevented, a movable piece is arranged in the groove 205, a blocking piece 209 is arranged above the groove 205, the movable piece is connected with the blocking piece 209, when the air flows upwards from the groove 205, the air pushes the blocking piece 209 to move upwards, the air flows to a separation mechanism 3 from a gap between the blocking piece 209 and the groove 205, when the air flows backwards above, the blocking piece 209 is pressed to the inner side of the groove 205, and is contacted with the groove 205, so that the air cannot flow backwards.
The separating mechanism 3 comprises a connecting shaft 301, a plurality of spiral slices 302 are arranged on the connecting shaft 301, a driving mechanism is arranged on one side, close to the upper end, of the connecting shaft 301, and the driving mechanism is used for driving the connecting shaft 301 to rotate. The connecting shaft 301 is driven to rotate by the driving mechanism, the connecting shaft 301 rotates to drive the spiral sheets 302 to rotate, wherein the spiral sheets 302 are in spiral structures as shown in the figure, and air can be rotated in different directions through the rotation of the spiral sheets 302, so that particles in the air are thrown out, and the separation of the particles in the air is completed.
In the application, a pushing piece 204 is arranged on one side of the partition plate 203 on the inner wall of the connecting cylinder 201, one end of the pushing piece 204 is rotatably connected to the inner wall of the connecting cylinder 201, and the other end is contacted with the partition plate 203. When no air is introduced, the pushing member 204 provides a certain pushing force to the partition plate 203, thereby preventing the introduced air from flowing out.
In the application, the movable part comprises a supporting rod 206, a spring 207 is sleeved outside the supporting rod 206, a moving block 208 is connected above the spring 207 and used for driving a blocking piece 209 to move, the supporting rod 206 is in sliding connection with the moving block 208, the moving block 208 is connected with the blocking piece 209, and when no air flows through the arrangement of the spring 207, the blocking piece 209 is pulled by the tensile force of the spring 207 to be contacted with the groove 205, so that air flowing into the separating mechanism 3 is prevented from flowing back.
In the application, the side wall of the plugging piece 209 is an inclined surface, and the inclined surface is matched with the groove 205, so that the top of the connecting cylinder 201 can be conveniently sealed when no air flows.
In the application, the pushing piece 204 comprises an elastic piece, one end of the elastic piece is connected with the inner wall of the connecting cylinder 201, the other end of the elastic piece is contacted with the partition plate 203 near the lower end, and the partition plate 203 is pushed to be tightly connected with the air inlet 202 by the elastic force of the elastic piece.
In the application, the connecting shaft 301 is of a tubular structure with a hollow interior, the connecting shaft 301 is provided with a plurality of first atomizing nozzles 303, the first atomizing nozzles 303 are used for spraying disinfectant to disinfect air, the upper end of the connecting shaft 301 is rotationally connected with the conveying pipe 4, the conveying pipe 4 is used for conveying disinfectant to the connecting shaft 301 and the first atomizing nozzles 303, the conveying pipe 4 is rotationally connected with the connecting shaft 301, the joint with the conveying pipe 4 is not affected when the connecting shaft 301 rotates, the conveying pipe 4 extends to the outer side of the ventilation pipe body 1, the conveying pipe 4 is connected with an external disinfectant box body, and the disinfectant is conveyed into the conveying pipe 4 by a water pump.
In the application, the driving mechanism comprises a motor 5, a fixing frame 6 is arranged in a ventilation pipe body 1, the motor 5 is arranged on the fixing frame 6, a first gear 7 is connected to an output shaft of the motor 5, a second gear 8 is sleeved on a connecting shaft 301, the first gear 7 is connected with the second gear 8 in a meshed manner, the connecting shaft 301 is positioned below the second gear 8 and is rotationally connected with a support 9, the support 9 is connected with the fixing frame 6, the motor 5 is utilized to drive the first gear 7 to rotate, the first gear 7 rotates to drive the second gear 8 to rotate, and therefore the connecting shaft 301 is driven to rotate, and the position of the connecting shaft 301 is limited through the support 9.
In the application, a first guide plate 304 and a second guide plate 305 are respectively arranged at two ends of a connecting shaft 301, the first guide plate 304 and the second guide plate 305 are both rotatably connected with the connecting shaft 301, and a plurality of through holes are arranged at the positions of the first guide plate 304 and the second guide plate 305 close to the inner side for air to flow. The first guide plate 304 and the second guide plate 305 are both in a conical structure and are oppositely arranged, and the arrangement of the first guide plate 304 is convenient for blocking the particles through the first guide plate 304 when the connecting shaft 301 and the spiral sheet 302 rotate to separate the particles in the air, so that the particles flow down along the pipe wall. The second guide plate 305 is configured to collect the flowing down particulate matter at the edge of the second guide plate 305, facilitate cleaning thereof, and avoid flowing into the chamber below the second guide plate 305.
When the application is used, air in a laboratory enters the ventilation pipe body 1 from the air inlet pipe 101, enters the separation mechanism 3 through the backflow prevention component 2, disinfects the air, separates solid particles in the air and then is discharged through the air outlet 102. Air entering from the air inlet pipe 101 enters the groove 205 through the air inlet 202, when the air flows upwards from the groove 205, the air pushes the blocking piece 209 to move upwards, the air flows to the separating mechanism 3 from a gap between the blocking piece 209 and the groove 205, when the air flows back above, the blocking piece 209 is pressed and moves towards the inner side of the groove 205 to be in contact with the groove 205, so that the air cannot flow back, when the air in the groove 205 flows towards the outer side of the air inlet 202, the air pushes the separation plate 203 to rotate towards one side of the air inlet 202, and the separation plate 203 is tightly connected with the air inlet 202, so that the air backflow is prevented. When the separating mechanism 3 works, the motor 5 is utilized to drive the first gear 7 to rotate, the first gear 7 rotates to drive the second gear 8 to rotate, so as to drive the connecting shaft 301 to rotate, the connecting shaft 301 rotates to drive the spiral sheet 302 to rotate, and meanwhile, the connecting shaft 301 rotates to drive the second atomizing nozzle 11 to spray and disinfect into the cavity while rotating along with the connecting shaft 301, and the spiral sheet 302 rotates to enable air to rotate in different directions, so that particles in the air are thrown out by utilizing centrifugal force, and the separation of the particles in the air is completed.
Example 2
The basis for the combination of example 1 is that: the connecting pipe 10 is arranged on the end part of the air inlet pipe 101 in a penetrating manner, the second atomizing nozzle 11 is arranged at the end part of the connecting pipe 10, which is positioned at the inner side of the air inlet pipe 101, wherein the connecting pipe 10 is connected with an external disinfectant tank, atomized disinfectant is sprayed to air entering the air inlet pipe 101 through the arrangement of the second atomizing nozzle 11, meanwhile, the disinfectant is heavy due to the adhesion of particles in the air, and the subsequent separation mechanism 3 is convenient for separating the particles in the air.
In the application, the second atomizing nozzle 11 is provided with the butt joint pipe 12, the butt joint pipe 12 is rotationally connected with the connecting pipe 10, the butt joint pipe 12 is internally provided with the annular equally-spaced blades 13, and when liquid passes through the butt joint pipe 12, the butt joint pipe 12 can be driven to rotate by the arrangement of the blades 13, so that the second atomizing nozzle 11 is driven to rotate, and the disinfectant is more fully contacted with air.
In one possible embodiment, the inner wall of the ventilation pipe body 1 at the separating mechanism 3 is of a beveled structure to facilitate the falling of particulate matter.
In one possible embodiment, the inner wall of the ventilation tube body 1 is provided with ultraviolet lamps for sterilizing the air.
The foregoing has shown and described the basic principles, principal features and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present application, and are not intended to limit the application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application as claimed. The scope of the application is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a ventilation backflow prevention device that laboratory used, includes ventilation pipe body (1), ventilation pipe body (1) one side is provided with air-supply line (101), ventilation pipe body (1) top is provided with air outlet (102), its characterized in that: a backflow prevention assembly (2) is arranged in the ventilation pipe body (1) and close to one side of the air inlet pipe (101), and a separation mechanism (3) is arranged above the backflow prevention assembly (2);
the backflow prevention assembly (2) comprises a connecting cylinder (201), a groove (205) is formed in the top surface of the connecting cylinder (201), a plurality of air inlets (202) are formed in the side wall of the connecting cylinder (201), the air inlets (202) are communicated with the groove (205), a separation plate (203) is rotatably connected to the inner side of the air inlets (202), a movable piece is arranged in the groove (205), a plugging piece (209) is arranged above the groove (205), and the movable piece is connected with the plugging piece (209);
the movable piece comprises a supporting rod (206), a spring (207) is sleeved outside the supporting rod (206), a moving block (208) is connected above the spring (207), the supporting rod (206) is slidably connected with the moving block (208), and the moving block (208) is connected with a blocking piece (209);
the separating mechanism (3) comprises a connecting shaft (301), a plurality of spiral sheets (302) are arranged on the connecting shaft (301), a driving mechanism is arranged on one side, close to the upper end, of the connecting shaft (301), and the driving mechanism is used for driving the connecting shaft (301) to rotate;
the connecting shaft (301) is of a tubular structure with a hollow interior, a plurality of first atomization nozzles (303) are arranged on the connecting shaft (301), a conveying pipe (4) is rotatably connected to the upper end of the connecting shaft (301), and the conveying pipe (4) extends to the outer side of the ventilation pipe body (1);
a pushing piece (204) is arranged on one side of the partition plate (203) on the inner wall of the connecting cylinder (201), one end of the pushing piece (204) is rotationally connected to the inner wall of the connecting cylinder (201), and the other end of the pushing piece is contacted with the partition plate (203);
the pushing piece (204) comprises an elastic piece, one end of the elastic piece is connected with the inner wall of the connecting cylinder (201), and the other end of the elastic piece is contacted with the partition plate (203) near the lower end.
2. A laboratory ventilation and backflow prevention device according to claim 1, wherein: the side wall of the plugging piece (209) is an inclined surface, and the inclined surface is matched with the groove (205).
3. A laboratory ventilation and backflow prevention device according to claim 1, wherein: the driving mechanism comprises a motor (5), a fixing frame (6) is arranged in the ventilation pipe body (1), the motor (5) is arranged on the fixing frame (6), a first gear (7) is connected to an output shaft of the motor (5), a second gear (8) is sleeved on the connecting shaft (301), the first gear (7) is meshed with the second gear (8), the connecting shaft (301) is located below the second gear (8) and is connected with a support (9) in a rotating mode, and the support (9) is connected with the fixing frame (6).
4. A laboratory ventilation and backflow prevention device according to claim 1, wherein: the two ends of the connecting shaft (301) are respectively provided with a first guide plate (304) and a second guide plate (305), and the first guide plate (304) and the second guide plate (305) are both in rotary connection with the connecting shaft (301).
5. A laboratory ventilation and backflow prevention device according to claim 1, wherein: the end part of the air inlet pipe (101) is provided with a connecting pipe (10) in a penetrating way, and the end part of the connecting pipe (10) positioned at the inner side of the air inlet pipe (101) is provided with a second atomizing nozzle (11).
6. A laboratory ventilation and backflow prevention device according to claim 5, wherein: the second atomization nozzle (11) is provided with a butt joint pipe (12), the butt joint pipe (12) is rotationally connected with the connecting pipe (10), and blades (13) distributed in annular equidistant mode are arranged in the butt joint pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310769434.7A CN116499059B (en) | 2023-06-28 | 2023-06-28 | Ventilation backflow preventing device for laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310769434.7A CN116499059B (en) | 2023-06-28 | 2023-06-28 | Ventilation backflow preventing device for laboratory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116499059A CN116499059A (en) | 2023-07-28 |
| CN116499059B true CN116499059B (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310769434.7A Active CN116499059B (en) | 2023-06-28 | 2023-06-28 | Ventilation backflow preventing device for laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116499059B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117503975B (en) * | 2023-12-29 | 2024-03-22 | 甘肃鑫博科实验室系统工程有限公司 | Laboratory ventilation system and method |
Citations (8)
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| CN116499059A (en) | 2023-07-28 |
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