CN108160651B - Environment-friendly fume chamber for metal detection - Google Patents
Environment-friendly fume chamber for metal detection Download PDFInfo
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- CN108160651B CN108160651B CN201711492326.0A CN201711492326A CN108160651B CN 108160651 B CN108160651 B CN 108160651B CN 201711492326 A CN201711492326 A CN 201711492326A CN 108160651 B CN108160651 B CN 108160651B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4508—Gas separation or purification devices adapted for specific applications for cleaning air in buildings
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- 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 invention discloses an environment-friendly type fume hood for metal detection, which comprises a hood body, an operation table and a ventilation device, wherein the ventilation device comprises an air inlet bin and an air exhaust bin, the air inlet bin is provided with an outdoor air inlet, an air inlet guide plate, an air inlet guide ring, an air inlet fan, an air inlet filter piece and an indoor air inlet, and the air exhaust bin is provided with an indoor air exhaust port, a first air exhaust filter piece, an air exhaust guide plate, an air exhaust guide ring, an air exhaust fan, a second air exhaust filter piece and an outdoor air exhaust port; and a smoke sensor and an odor sensor are also arranged. The invention provides an environment-friendly fume hood for metal detection, which enables the exhaust emission generated in the detection process to reach the standard, and has large exhaust capacity, uniform and stable air flow in the fume hood in the exhaust process and low noise; the invention has the function of exhausting the waste gas generated in the detection process and purifying the indoor air.
Description
Technical Field
The invention belongs to the technical field of metal detection equipment, and particularly relates to an environment-friendly fume hood for metal detection.
Background
The fume hood is an indispensable component of the metal detection process, and can avoid the detection staff from inhaling toxic and harmful, pathogenic or unidentified chemical substances and organisms. The staff stands or sits before the fume chamber, with the glass door as far as possible lowing, the hand stretches into in the cabinet through the door down and carries out the experiment, and the exhaust fan continuous operation guarantees that harmful gas can not spill over in a large number.
The main function of the fume hood is an exhaust function, various harmful gases, odor, moisture and inflammable, explosive and corrosive substances can be generated in the detection of the chemical metals, so that the safety of users is protected, the pollutant in the experiment is prevented from diffusing to a detection room, the fume hood is used near a pollution source, the number of the fume hood used in the past is small, and the fume hood is only used in the experiments of particularly harmful and dangerous gases and generating a large amount of heat.
Because personal safety and environmental problems caused by improper experiment protection occur sometimes, the metal detection environment needs to be improved urgently, the number of the used ventilation cabinets is increased dramatically, experiments can be carried out in the ventilation cabinets, the working efficiency is improved, the labor sanitary condition and personal safety of workers are improved, and the emission of experimental waste gas reaches the standard.
At present, the environmental-friendly fume hood for metal detection generally has the defects of substandard exhaust emission, small exhaust amount, unstable air flow in the fume hood in the exhaust process and high noise, and the high-end fume hood is not suitable for large-scale metal detection transformation due to high manufacturing cost.
Disclosure of Invention
The invention mainly solves the technical problems of providing the environment-friendly fume hood for metal detection, which enables the exhaust emission generated in the detection process to reach the standard, and has large exhaust capacity, uniform and stable air flow in the fume hood in the exhaust process and low noise; the invention has the function of exhausting the waste gas generated in the detection process and purifying the indoor air.
In order to solve the technical problems, the invention adopts a technical scheme that: the environment-friendly ventilating cabinet for metal detection comprises a cabinet body, an operating table and a ventilating device, wherein the operating table is arranged in the cabinet body, the ventilating device is arranged above the cabinet body, the ventilating device comprises an air inlet bin and an air exhaust bin, and the air inlet bin and the air exhaust bin are arranged side by side and are not contacted with each other;
the air inlet bin is sequentially provided with an outdoor air inlet, an air inlet guide plate, an air inlet guide ring, an air inlet fan, an air inlet filter piece and an indoor air inlet along the air flow direction, the outdoor air inlet is communicated with the air inlet guide plate, the air inlet guide plate is communicated with the air inlet guide ring, the air inlet guide ring is communicated with the air inlet fan, the air inlet fan is communicated with the air inlet filter piece, and the air inlet filter piece is communicated with the indoor air inlet; the air exhaust bin is sequentially provided with an indoor air exhaust port, a first air exhaust filter piece, an air exhaust guide plate, an air exhaust guide ring, an air exhaust fan, a second air exhaust filter piece and an outdoor air exhaust port along the air flow direction, wherein the indoor air exhaust port is communicated with the first air exhaust filter piece, the first air exhaust filter piece is communicated with the air exhaust guide plate, the air exhaust guide plate is communicated with the air exhaust guide ring, the air exhaust guide ring is communicated with the air exhaust fan, the air exhaust fan is communicated with the second air exhaust filter piece, and the second air exhaust filter piece is communicated with the outdoor air exhaust port;
the indoor air inlets are provided with two first indoor air inlets which are respectively arranged above the operating platform and second indoor air inlets which are arranged on the side wall of the air inlet bin; the indoor air outlets are two and are respectively a first indoor air outlet arranged above the operating platform and a second indoor air outlet arranged on the side wall of the air exhaust bin;
the air inlet filter pieces are provided with two first air inlet filter pieces which are respectively arranged at the inner side of the first indoor air inlet and second air inlet filter pieces which are arranged at the inner side of the second indoor air inlet;
the first exhaust filtering piece comprises a light source and a photocatalyst net, two photocatalyst nets are arranged, one photocatalyst net is positioned at the first indoor air outlet, and the other photocatalyst net is positioned at the second indoor air outlet; the two light sources are respectively arranged at the downstream of the two photocatalyst nets, and the light sources are annular light sources with the wavelength of more than 380nm;
the first indoor air inlet, the second indoor air inlet, the first indoor air outlet and the second indoor air outlet are respectively provided with an electric shutter valve, and each electric shutter valve is respectively connected with a driving motor for driving the electric shutter valve to act;
the smoke sensor and the peculiar smell sensor are respectively arranged in the cabinet body and above the operating table;
the smoke sensor, the peculiar smell sensor, all the driving motors, the light source, the air inlet fan and the air exhaust fan are respectively connected with the control system.
Further, the air inlet guide plate is a round table with two open ends, the air inlet guide plate comprises an upper end face with a large opening, a lower end face with a small opening and an air inlet guide plate side wall, the lower end face is adapted to the air inlet side of the air inlet guide ring, and the upper end face is adapted to the outdoor air inlet; a third included angle is formed between the side wall of the air inlet guide plate and the lower end face, and the size of the third included angle is 110-170 degrees.
Further, the air exhaust guide plate comprises an air exhaust guide main plate provided with an opening, a first guide inclined plate close to a first indoor air outlet and a second guide inclined plate close to a second indoor air outlet, one end of the first guide inclined plate is in sealing connection with an air exhaust bin, the other end of the first guide inclined plate is integrally connected with the air exhaust guide main plate, one end of the second guide inclined plate is in sealing connection with the air exhaust bin, the other end of the second guide inclined plate is integrally connected with the air exhaust guide main plate, the first guide inclined plate and the second guide inclined plate are respectively positioned on the upper side and the lower side of the air exhaust guide main plate, a first included angle is formed between the first guide inclined plate and the air exhaust guide main plate, a second included angle is formed between the second guide inclined plate and the air exhaust guide main plate, and the first included angle and the second included angle are obtuse angles.
Further, the first included angle is 110-170 degrees, and the second included angle is 110-170 degrees.
Further, the periphery of smoke transducer with odor sensor is equipped with the dust cover, the dust cover is equipped with first monitoring hole, smoke transducer with odor sensor sees through first monitoring hole and realizes smog and odor monitoring.
Further, a second monitoring hole is formed in the side wall of the exhaust bin, and a PM2.5 sensor and a CO sensor are arranged at the second monitoring hole and positioned in the exhaust bin 2 Sensor, PM2.5 sensor and CO 2 The sensors are respectively connected with the control system.
Further, the first air inlet filter element, the second air inlet filter element, the first air exhaust filter element and the second air exhaust filter element are respectively detachably connected.
Further, the first air inlet filter piece and the second air inlet filter piece both comprise a first filter layer and a second filter layer, the first filter layer is positioned at the upstream of the second filter layer, the first filter layer is an activated carbon filter cotton layer, and the thickness of the activated carbon filter cotton layer is 2-5cm; the second filter layer is a HEPA filter layer, and the thickness of the HEPA filter layer is 5-7cm.
Further, the second exhaust filter piece is an activated carbon honeycomb filter screen.
Further, the air inlet fan and the air outlet fan are centrifugal fans with three gears of high, medium and low.
The beneficial effects of the invention are at least as follows:
1. the ventilation device comprises the air exhaust bin and the air inlet bin which are arranged side by side and are not contacted with each other, so that the air inlet and the air exhaust are completely independent and are not influenced by each other, and the ventilation effect is good and high; the first exhaust filter piece is used for degrading toxic and harmful gas generated in the detection process, avoiding environmental pollution caused by the outside of the exhaust chamber, and the second exhaust filter piece is used for filtering particles in the exhaust gas, so that the exhaust gas reaches the emission standard, and the multi-layer arrangement has good purification effect; the air inlet bin is used for sucking outdoor fresh air and replacing indoor polluted air, and the first filtering piece and the second filtering piece are arranged in the air inlet bin, so that various pollutants in the outdoor air can be effectively removed, and clean and oxygen-enriched air can be provided by the air inlet bin under the condition that the outdoor air is polluted; therefore, the invention has the function of exhausting the waste gas generated in the detection process and purifying the indoor air; simultaneously, a smoke sensor and an odor sensor are arranged, when the smoke sensor and the odor sensor detect smoke and odor,the control system automatically starts the exhaust fan, and can automatically adjust the gear of the exhaust fan according to the monitoring values of smoke and peculiar smell; additionally provided with a PM2.5 sensor and CO 2 A sensor, when PM2.5 and CO are detected 2 When in use, the control system automatically starts the exhaust fan and the air inlet fan, and can be used for controlling the exhaust fan and the air inlet fan according to PM2.5 and CO 2 Automatically adjusting the gear of the air inlet fan and the air outlet fan, replacing indoor and outdoor air, and realizing air purification; the degree of automation is high;
2. in the invention, the air inlet and outlet guide plates and the air inlet and outlet guide rings are respectively arranged at the air inlet fan and the air outlet fan, and the outdoor air inlet and indoor air outlet respectively enter the air inlet and outlet fan through the air inlet and outlet guide plates and the air inlet and outlet guide rings, so that the output air speed of the fan is centralized and uniform, the pressure loss is small, and the noise of the ventilation device is small; the air inlet guide plate is a round table with two open ends, one end of the round table with a small opening is adapted to the air inlet side of the air exhaust guide ring, and the other end of the round table with a large opening is adapted to the outdoor air outlet; the first and second inclined plates of the exhaust guide plate and the exhaust guide main plate are provided with a first and second included angle, the preferable angle of the first and second included angles is 135 degrees, at this time, indoor exhaust air and outdoor intake air can be smoothly input along the intake and exhaust guide plate, and the effect of reducing pressure loss and noise is better;
3. the first and second air inlet filter pieces comprise a HEPA filter layer and an active carbon filter cotton layer, the removal efficiency of the HEPA filter layer on particles with the diameter of less than 0.3 microns can reach more than 99.97%, and the active carbon filter cotton layer has excellent aerodynamic performance, small volume density, large specific surface area, high adsorption efficiency and small wind resistance coefficient; the HEPA filter layer and the activated carbon filter cotton layer are used in a combined mode, and the filtering effect is better; the second exhaust filter piece adopts an activated carbon plastic honeycomb filter screen, has small volume density, large specific surface area, high adsorption efficiency and small wind resistance coefficient, absorbs organic gas and malodorous gas in indoor waste gas, and avoids the environment from being damaged by directly discharging the waste gas into the air;
4. according to the invention, the first air inlet filter piece, the second air inlet filter piece, the first air exhaust filter piece and the second air exhaust filter piece are respectively detachably connected, so that the replacement and the maintenance are convenient.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is an enlarged view of a in fig. 1;
FIG. 3 is a schematic view of the structure of the air intake baffle of the present invention;
FIG. 4 is a schematic view of the structure of the exhaust baffle of the present invention;
FIG. 5 is a control schematic diagram of the present invention;
the parts in the drawings are marked as follows:
cabinet 1, air inlet bin 2, first outdoor air inlet 21, air inlet guide plate 22, upper end face 221, lower end face 222, air inlet guide plate side wall 223, air inlet guide ring 23, air inlet fan 24, first air inlet filter 251, second air inlet filter 257, air inlet filter and indoor air inlet 26, second indoor air inlet 27, air exhaust bin 3, first indoor air outlet 31, light source 32, air exhaust guide plate 33, air exhaust guide main plate 331, first guide inclined plate 332, second guide inclined plate 333, air exhaust guide ring 34, air exhaust fan 35, second air exhaust filter 36, outdoor air exhaust opening 37, second indoor air exhaust opening 38, photocatalyst net 39, driving motor 4, smoke sensor 5, odor sensor 6, control system 7, PM2.5 sensor 8, CO 2 Sensor 9, operation panel 10, first contained angle α1, second contained angle α2 and second contained angle α3.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Examples: 1-5, the environment-friendly fume hood for metal detection comprises a hood body 1, an operation table and a ventilation device, wherein the operation table is arranged in the hood body, the ventilation device is arranged above the hood body, the ventilation device comprises an air inlet bin 2 and an air exhaust bin 3, and the air inlet bin and the air exhaust bin are arranged side by side and are not contacted with each other;
the air inlet bin is sequentially provided with an outdoor air inlet 21, an air inlet guide plate 22, an air inlet guide ring 23, an air inlet fan 24, an air inlet filter and an indoor air inlet along the air flow direction, the outdoor air inlet is communicated with the air inlet guide plate, the air inlet guide plate is communicated with the air inlet guide ring, the air inlet guide ring is communicated with the air inlet fan, the air inlet fan is communicated with the air inlet filter, and the air inlet filter is communicated with the indoor air inlet; the air exhaust bin is sequentially provided with an indoor air exhaust port, a first air exhaust filter piece, an air exhaust guide plate 33, an air exhaust air guide ring 34, an air exhaust fan 35, a second air exhaust filter piece 36 and an outdoor air exhaust port 37 along the air flow direction, wherein the indoor air exhaust port is communicated with the first air exhaust filter piece, the first air exhaust filter piece is communicated with the air exhaust guide plate, the air exhaust guide plate is communicated with the air exhaust air guide ring, the air exhaust air guide ring is communicated with the air exhaust fan, the air exhaust fan is communicated with the second air exhaust filter piece, and the second air exhaust filter piece is communicated with the outdoor air exhaust port;
the indoor air inlets are provided with two first indoor air inlets 26 arranged above the operation table and second indoor air inlets 27 arranged on the side wall of the air inlet bin respectively; the indoor air outlets are provided with two first indoor air outlets 31 which are respectively arranged above the operation table and second indoor air outlets 38 which are respectively arranged on the side wall of the air exhaust bin;
the two air inlet filter pieces are respectively a first air inlet filter piece 256 arranged on the inner side of the first indoor air inlet and a second air inlet filter piece 257 arranged on the inner side of the second indoor air inlet;
the first exhaust filtering piece comprises a light source 32 and a photocatalyst net 39, two photocatalyst nets are arranged, one photocatalyst net is positioned at the first indoor air outlet, and the other photocatalyst net is positioned at the second indoor air outlet; the two light sources are respectively arranged at the downstream of the two photocatalyst nets, and the light sources are annular light sources with the wavelength of more than 380nm;
the first indoor air inlet, the second indoor air inlet, the first indoor air outlet and the second indoor air outlet are respectively provided with an electric shutter valve, and each electric shutter valve is respectively connected with a driving motor 4 for driving the electric shutter valve to act;
the smoke sensor 5 and the peculiar smell sensor 6 are respectively arranged in the cabinet body and above the operating table;
the smoke sensor 5, the peculiar smell sensor 6, all the driving motors 4, the light source 32, the air inlet fan 24 and the air outlet fan 35 are respectively connected with the control system 7.
The air inlet guide plate 22 is a round table with two open ends, and comprises an upper end surface 221 with a large opening, a lower end surface 222 with a small opening and an air inlet guide plate side wall 223, wherein the lower end surface is adapted to the air inlet side of the air inlet guide ring 23, and the upper end surface is adapted to the outdoor air inlet; a third included angle alpha 3 is formed between the side wall of the air inlet guide plate and the lower end face, and the size of the third included angle is 110-170 degrees.
Preferably, the third included angle is 120 ° -150 °.
The exhaust guide plate 33 comprises an exhaust guide main plate 333 provided with an opening, a first guide inclined plate 331 close to a first indoor air outlet, and a second guide inclined plate 332 close to a second indoor air outlet, one end of the first guide inclined plate is in sealing connection with an exhaust bin, the other end of the first guide inclined plate is integrally connected with the exhaust guide main plate, one end of the second guide inclined plate is in sealing connection with the exhaust bin, the other end of the second guide inclined plate is integrally connected with the exhaust guide main plate, the first guide inclined plate and the second guide inclined plate are respectively positioned on the upper side and the lower side of the exhaust guide main plate, a first included angle alpha 1 is formed between the first guide inclined plate and the exhaust guide main plate, a second included angle alpha 2 is formed between the second guide inclined plate and the exhaust guide main plate, and the first included angle and the second included angle are all obtuse angles.
The first included angle is 110-170 degrees, and the second included angle is 110-170 degrees.
Preferably, the first included angle is 135 ° and the second included angle is 135 °.
The smoke sensor with the periphery of peculiar smell sensor is equipped with the dust cover, the dust cover is equipped with first monitoring hole, smoke sensor with peculiar smell sensor sees through first monitoring hole and realizes smog and peculiar smell monitoring.
The side wall of the exhaust bin is provided with a second monitoring hole, and a PM2.5 (fine particulate matter) sensor 8 and CO are arranged at the second monitoring hole and in the exhaust bin 2 (carbon dioxide) sensor 9, the PM2.5 sensor 8 and the CO 2 The sensors 9 are respectively connected with the control system.
The first air inlet filter piece, the second air inlet filter piece, the first air exhaust filter piece and the second air exhaust filter piece are respectively detachably connected.
The first air inlet filter piece and the second air inlet filter piece both comprise a first filter layer and a second filter layer, the first filter layer is positioned at the upstream of the second filter layer, the first filter layer is an activated carbon filter cotton layer, and the thickness of the activated carbon filter cotton layer is 2-5cm; the second filter layer is a HEPA (high efficiency air filter) filter layer, and the thickness of the HEPA filter layer is 5-7cm.
The thickness of the activated carbon filter cotton layer is 3cm, and the thickness of the HEPA filter layer is 6cm.
The second exhaust filter piece is an active carbon honeycomb filter screen.
The air inlet fan and the air exhaust fan are centrifugal fans with three gears of high, medium and low.
The working principle or working process of the invention is as follows:
the ventilation device comprises the air exhaust bin and the air inlet bin which are arranged side by side and are not contacted with each other, so that the air inlet and the air exhaust are completely independent and are not influenced by each other, and the ventilation effect is good and high; the exhaust bin is provided with a first exhaust filter piece and a second exhaust filter piece, the first exhaust filter piece comprises a light source and a photocatalyst net, and the photocatalyst net is provided with two exhaust filter pieces and two photocatalyst netsThe first exhaust filter piece is used for degrading toxic and harmful gases generated in the detection process, avoiding environmental pollution caused by the outside of the exhaust chamber, and the second exhaust filter piece is used for filtering particles in the exhaust gas, so that the exhaust gas reaches the emission standard, and the exhaust gas purifying device is arranged in a multi-layer manner and has good purifying effect; the air inlet bin is used for sucking outdoor fresh air and replacing indoor polluted air, and the first filtering piece and the second filtering piece are arranged in the air inlet bin, so that various pollutants in the outdoor air can be effectively removed, and clean and oxygen-enriched air can be provided by the air inlet bin under the condition that the outdoor air is polluted; therefore, the invention has the function of exhausting the waste gas generated in the detection process and purifying the indoor air; the smoke sensor and the peculiar smell sensor are arranged at the same time, when the smoke sensor and the peculiar smell sensor detect smoke and peculiar smell, the control system automatically starts the exhaust fan, and the gear of the exhaust fan can be automatically adjusted according to the monitoring values of the smoke and the peculiar smell; additionally provided with a PM2.5 sensor and CO 2 A sensor, when PM2.5 and CO are detected 2 When in use, the control system automatically starts the exhaust fan and the air inlet fan, and can be used for controlling the exhaust fan and the air inlet fan according to PM2.5 and CO 2 Automatically adjusting the gear of the air inlet fan and the air outlet fan, replacing indoor and outdoor air, and realizing air purification; the degree of automation is high.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the present invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present invention.
Claims (8)
1. An environment-friendly fume chamber for metal detection, its characterized in that: the intelligent cabinet temperature control device comprises a cabinet body (1), an operation table and a ventilation device, wherein the operation table is arranged in the cabinet body, the ventilation device is arranged above the cabinet body, the ventilation device comprises an air inlet bin (2) and an air exhaust bin (3), and the air inlet bin and the air exhaust bin are arranged side by side and are not contacted with each other;
the air inlet bin is sequentially provided with an outdoor air inlet (21), an air inlet guide plate (22), an air inlet guide ring (23), an air inlet fan (24), an air inlet filter and an indoor air inlet along the air flow direction, wherein the outdoor air inlet is communicated with the air inlet guide plate, the air inlet guide plate is communicated with the air inlet guide ring, the air inlet guide ring is communicated with the air inlet fan, the air inlet fan is communicated with the air inlet filter, and the air inlet filter is communicated with the indoor air inlet; the air exhaust bin is sequentially provided with an indoor air exhaust port, a first air exhaust filter piece, an air exhaust guide plate (33), an air exhaust guide ring (34), an air exhaust fan (35), a second air exhaust filter piece (36) and an outdoor air exhaust port (37) along the air flow direction, wherein the indoor air exhaust port is communicated with the first air exhaust filter piece, the first air exhaust filter piece is communicated with the air exhaust guide plate, the air exhaust guide plate is communicated with the air exhaust guide ring, the air exhaust guide ring is communicated with the air exhaust fan, the air exhaust fan is communicated with the second air exhaust filter piece, and the second air exhaust filter piece is communicated with the outdoor air exhaust port;
the indoor air inlets are provided with two first indoor air inlets (26) which are respectively arranged above the operating platform and second indoor air inlets (27) which are respectively arranged on the side wall of the air inlet bin; the indoor air outlets are provided with two first indoor air outlets (31) which are respectively arranged above the operating platform and second indoor air outlets (38) which are respectively arranged on the side wall of the air exhaust bin;
the two air inlet filter pieces are respectively a first air inlet filter piece (256) arranged on the inner side of the first indoor air inlet and a second air inlet filter piece (257) arranged on the inner side of the second indoor air inlet;
the first exhaust filtering piece comprises a light source (32) and a photocatalyst net (39), wherein two photocatalyst nets are arranged, one photocatalyst net is positioned at the first indoor air outlet, and the other photocatalyst net is arranged at the second indoor air outlet; the two light sources are respectively arranged at the downstream of the two photocatalyst nets, and the light sources are annular light sources with the wavelength of more than 380nm;
the first indoor air inlet, the second indoor air inlet, the first indoor air outlet and the second indoor air outlet are respectively provided with an electric shutter valve, and each electric shutter valve is respectively connected with a driving motor (4) for driving the electric shutter valve to act;
the smoke sensor (5) and the peculiar smell sensor (6) are arranged in the cabinet body respectively and are positioned above the operating table;
the smoke sensor (5), the peculiar smell sensor (6), all the driving motors (4), the light source (32), the air inlet fan (24) and the air exhaust fan (35) are respectively connected with the control system;
the second exhaust filter piece is an active carbon honeycomb filter screen;
the air inlet fan and the air exhaust fan are centrifugal fans with three gears of high, medium and low.
2. The environmentally friendly fume hood for metal detection of claim 1, wherein: the air inlet guide plate (22) is a round table with two open ends, the air inlet guide plate comprises an upper end face (221) with a large opening, a lower end face (222) with a small opening and an air inlet guide plate side wall (223), the lower end face is adapted to the air inlet side of the air inlet guide ring (23), and the upper end face is adapted to the outdoor air inlet; a third included angle (alpha 3) is formed between the side wall of the air inlet guide plate and the lower end face, and the size of the third included angle is 110-170 degrees.
3. The environmentally friendly fume hood for metal detection of claim 1, wherein: the air exhaust guide plate (33) comprises an air exhaust guide main plate (333) with an opening, a first guide inclined plate (331) close to a first indoor air outlet and a second guide inclined plate (332) close to a second indoor air outlet, one end of the first guide inclined plate is in sealing connection with an air exhaust bin and the other end of the first guide inclined plate is integrally connected with the air exhaust guide main plate, one end of the second guide inclined plate is in sealing connection with the air exhaust bin and the other end of the second guide inclined plate is integrally connected with the air exhaust guide main plate, the first guide inclined plate and the second guide inclined plate are respectively located on the upper side and the lower side of the air exhaust guide main plate, a first included angle (alpha 1) is formed between the first guide inclined plate and the air exhaust guide main plate, a second included angle (alpha 2) is formed between the second guide inclined plate and the air exhaust guide main plate, and the first included angle and the second included angle are obtuse angles.
4. The environmentally friendly fume hood for metal detection of claim 3, wherein: the first included angle is 110-170 degrees, and the second included angle is 110-170 degrees.
5. The environmentally friendly fume hood for metal detection of claim 1, wherein: the smoke sensor with the periphery of peculiar smell sensor is equipped with the dust cover, the dust cover is equipped with first monitoring hole, smoke sensor with peculiar smell sensor sees through first monitoring hole and realizes smog and peculiar smell monitoring.
6. The environmentally friendly fume hood for metal detection of claim 1, wherein: the side wall of the exhaust bin is provided with a second monitoring hole, and a PM2.5 sensor (8) and CO are arranged at the second monitoring hole and positioned in the exhaust bin 2 -a sensor (9), said PM2.5 sensor (8) and said CO 2 The sensors (9) are respectively connected with the control system.
7. The environmentally friendly fume hood for metal detection of claim 1, wherein: the first air inlet filter piece, the second air inlet filter piece, the first air exhaust filter piece and the second air exhaust filter piece are respectively detachably connected.
8. The environmentally friendly fume hood for metal detection of claim 1, wherein: the first air inlet filter piece and the second air inlet filter piece both comprise a first filter layer and a second filter layer, the first filter layer is positioned at the upstream of the second filter layer, the first filter layer is an activated carbon filter cotton layer, and the thickness of the activated carbon filter cotton layer is 2-5cm; the second filter layer is a HEPA filter layer, and the thickness of the HEPA filter layer is 5-7cm.
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| CN201711492326.0A CN108160651B (en) | 2017-12-30 | 2017-12-30 | Environment-friendly fume chamber for metal detection |
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| CN201711492326.0A CN108160651B (en) | 2017-12-30 | 2017-12-30 | Environment-friendly fume chamber for metal detection |
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| CN108160651A CN108160651A (en) | 2018-06-15 |
| CN108160651B true CN108160651B (en) | 2023-08-25 |
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| CN114871234B (en) * | 2022-05-23 | 2023-04-07 | 华北电力大学（保定） | Movable biological safety type air exhaust efficient filtering device |
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