CN113210388B - Dustproof and excessive harmful gas intelligent alarm system for laboratory ventilation cabinet - Google Patents
Dustproof and excessive harmful gas intelligent alarm system for laboratory ventilation cabinet Download PDFInfo
- Publication number
- CN113210388B CN113210388B CN202110527962.2A CN202110527962A CN113210388B CN 113210388 B CN113210388 B CN 113210388B CN 202110527962 A CN202110527962 A CN 202110527962A CN 113210388 B CN113210388 B CN 113210388B
- Authority
- CN
- China
- Prior art keywords
- working chamber
- cabinet body
- air
- communicating cavity
- air exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009423 ventilation Methods 0.000 title claims description 7
- 238000007789 sealing Methods 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims abstract description 34
- 239000003517 fume Substances 0.000 claims abstract description 14
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims abstract description 4
- 230000002265 prevention Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 231100001261 hazardous Toxicity 0.000 claims 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ventilation (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Combustion & Propulsion (AREA)
Abstract
The invention relates to the technical field of laboratory fume hoods, and discloses an intelligent alarm system for dust prevention and excessive harmful gas of a laboratory fume hood, which comprises a cabinet body, wherein a working chamber is arranged on the front side of the cabinet body, a sealing piece for sealing the open side of the working chamber is longitudinally arranged on the front side of the cabinet body in a sliding manner, a driving mechanism for driving the sealing piece to slide is arranged outside the cabinet body, a linkage mechanism is also arranged between the sealing piece and the driving mechanism, a second communicating cavity and a first communicating cavity which are communicated with the inside of the working chamber are respectively arranged in the cabinet body on the upper side and the lower side of the working chamber, a first air exhaust assembly and a second air exhaust assembly are respectively arranged in the second communicating cavity and the first communicating cavity, and when the driving mechanism drives the sealing piece to slide so as to open the working chamber, the linkage mechanism drives the air exhaust assemblies to work. The invention has simple structure, can effectively monitor the content of harmful gas in the working chamber, avoids the residual harmful gas in the working chamber from escaping when the working chamber is opened, and has safe and reliable use.
Description
Technical Field
The invention relates to the technical field of laboratory fume hoods, in particular to an intelligent alarm system for dust prevention and excessive harmful gas of a laboratory fume hood.
Background
At present, a ventilation cabinet is a local exhaust device commonly used in a laboratory, harmful gas can be completely and timely exhausted out of a workplace by the ventilation cabinet, an operator can be prevented from inhaling poisonous, harmful and peculiar-smell gas, and the ventilation cabinet plays a good role in protecting the operator. Be provided with the workspace on the fume hood usually, operating personnel tests at the workspace, and the fan on fume hood top is with harmful gas exhaust. The existing fume hood is provided with an air outlet at the top of a cabinet body, and a fan is arranged at the top. The existing fume hood does not have the function of monitoring the concentration of harmful gas in a working area in real time, and when the working area is opened, residual harmful gas in the fume hood easily escapes, so that potential safety hazards exist.
Disclosure of Invention
The invention aims to provide an intelligent alarm system for dust prevention and excessive harmful gas of a laboratory fume hood, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
dustproof and excessive intelligent alarm system of harm gas of laboratory fume chamber, the intelligent alarm system comprises a cabinet body, cabinet body front side is provided with the studio, cabinet body front side still longitudinal sliding is provided with the sealing member of the uncovered side of sealed studio, the external gliding actuating mechanism of drive sealing member that is equipped with of cabinet, still be equipped with link gear between sealing member and the actuating mechanism.
And a second communicating cavity and a first communicating cavity which are communicated with the interior of the working chamber are respectively arranged in the cabinet body on the upper side and the lower side of the working chamber.
And a first air exhaust assembly and a second air exhaust assembly are respectively arranged in the second communicating cavity and the first communicating cavity, and when the driving mechanism drives the sealing element to slide so as to open the working chamber, the linkage mechanism drives the air exhaust assemblies to work, so that the working chamber is in a negative pressure state.
The working chamber is also internally provided with a detection sensor for detecting the concentration of harmful gas, the working chamber is internally provided with an exhaust duct communicated with the working chamber, and the top of the working chamber is provided with a wind port communicated with the exhaust duct.
As a further improvement of the scheme, the front side of the cabinet body is provided with a groove for accommodating an upward moving sealing element, the groove is positioned above the opening of the working chamber, the sealing element is a transparent cover plate with a frame embedded outside, and the sealing element is connected with the inner wall of the groove in a sliding mode along the longitudinal direction.
As a further improvement of the scheme, the driving mechanism comprises a winch fixed at the top of the cabinet body and a first connecting rope wound on the winch, and the bottom end of the first connecting rope and the top of the sealing piece are fixed.
As a further improvement of the above scheme, the linkage mechanism includes a first linkage unit and a second linkage unit, and the first linkage unit and the second linkage unit respectively drive the corresponding first air exhaust assembly and the second air exhaust assembly to operate.
As a further improvement of the scheme, the first linkage unit comprises a movable column which is connected in series on the first connecting rope, the movable column is connected with the inner wall of the groove in a longitudinal sliding mode, a rack is fixed on the outer side of the movable column along the length direction of the movable column, the first linkage unit further comprises a connecting shaft which is connected in the groove in a rotating mode, and one end of the connecting shaft penetrates through the second communicating cavity in a movable mode and is connected with the first air exhaust assembly in the second communicating cavity.
As a further improvement of the above scheme, the first air exhaust assembly comprises a first suction fan mounted on the outer side of the connecting shaft.
As a further improvement of the above scheme, the second linkage unit includes a second connecting rope connected to the bottom end of the sealing member, the second connecting rope penetrates into the first communicating cavity, the second linkage unit further includes a first guide wheel vertically rotatably arranged in the first communicating cavity and a second guide wheel transversely rotatably arranged in the first communicating cavity, and the tail end of the second connecting rope sequentially bypasses wheel grooves of the first guide wheel and the second guide wheel and is connected with a toothed plate slidably connected with the inner bottom surface of the first communicating cavity.
As a further improvement of the scheme, the second air exhaust assembly comprises a rotating shaft which is rotatably connected in the first communicating cavity, a transmission gear in meshing transmission with the toothed plate is fixedly sleeved at the bottom of the rotating shaft, and a second suction fan is fixed at the top end of the rotating shaft.
As a further improvement of the above scheme, all be equipped with a plurality of mounting groove in first intercommunication chamber and the second intercommunication intracavity, all install gaseous temporary storage mechanism in every mounting groove, gaseous temporary storage mechanism includes one side open-ended flexible gasbag, and flexible gasbag's the opening outside has and corresponds the sealed fixed sealing washer of notch department inner wall of mounting groove, having a intermediate bottom in the flexible gasbag, having seted up at least one air vent on the intermediate bottom, the movable rod is worn to be equipped with in the air vent activity, and the one end and the flexible gasbag sealing end of movable rod are fixed, and the other end of movable rod stretches out the air vent and is fixed with the closing plate, and the closing plate is used for the shutoff air vent.
As a further improvement of the scheme, the outer wall of the telescopic air bag is provided with an air outlet pipe, an electromagnetic valve is installed on the air outlet pipe, the air outlet end of the air outlet pipe is connected with an air conveying pipe, and the other end of the air conveying pipe is communicated with the interior of the exhaust duct.
The beneficial effects of the invention are:
the sealing piece for sealing the working chamber is designed, when the sealing piece is opened to open the working chamber, the working chamber can be in a negative pressure state under the working of the first air extraction assembly and the second air extraction assembly, and possible residual gas in the working chamber cannot overflow along with the opening of the working chamber, so that the device is safer and more reliable to use.
According to the invention, as the sealing element is opened, the gas in the working chamber enters the corresponding first communication cavity or the second communication cavity, so that the pressure intensity is increased, the telescopic air bag is extended, after the extension sealing plate of the telescopic air bag is embedded into the corresponding vent hole, the telescopic air bag cannot be extended continuously, then the electromagnetic valve is opened to discharge the air filled in the telescopic air bag into the exhaust duct to be discharged, the gas is prevented from returning to the working chamber again, and after the gas is discharged, the telescopic air bag returns to the initial position to facilitate the next work.
The invention also designs a detection sensor for detecting the concentration of the harmful gas, can monitor the concentration of the harmful gas in real time, and is safer and more reliable to use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a front view of the overall structure of the present invention;
FIG. 2 is a side view of the structure of FIG. 1 in accordance with the present invention;
FIG. 3 is an enlarged view of FIG. 1 at A in accordance with the present invention;
FIG. 4 is a partial schematic structural view in embodiment 2 of the present invention;
FIG. 5 is a cross-sectional view taken at E-E of FIG. 2 of the present invention;
FIG. 6 is an enlarged view of the invention at B of FIG. 2;
fig. 7 is a schematic structural view of the movable column of the present invention.
In the figure: the cabinet body 1, the first communicating cavity 2, the working chamber 3, the sealing member 4, the groove 5, the movable column 6, the first connecting rope 7, the gear 8, the central shaft 9, the second communicating cavity 10, the air outlet 11, the hinge disc 12, the exhaust duct 13, the second suction fan 14, the first guide wheel 15, the second guide wheel 16, the rotating shaft 17, the toothed plate 18, the second connecting rope 19, the transmission gear 20, the telescopic airbag 21, the sealing ring 22, the sealing plate 23, the vent hole 24, the mounting groove 25, the middle partition plate 26, the movable rod 27, the air pipe 28, the electromagnetic valve 29, the air outlet pipe 30, the temporary storage mechanism 31, the first suction fan 32 and the connecting shaft 33.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1:
referring to fig. 1-7, the dustproof and excessive harmful gas intelligent alarm system for the laboratory ventilation cabinet comprises a cabinet body 1, wherein a working chamber 3 is arranged on the front side of the cabinet body 1, a sealing element 4 for sealing the open side of the working chamber 3 is further arranged on the front side of the cabinet body 1 in a longitudinally sliding manner, a driving mechanism for driving the sealing element 4 to slide is arranged outside the cabinet body 1, and a linkage mechanism is further arranged between the sealing element 4 and the driving mechanism.
And a second communicating cavity 10 and a first communicating cavity 2 which are communicated with the interior of the working chamber 3 are respectively arranged in the cabinet body 1 at the upper side and the lower side of the working chamber 3.
And a first air exhaust assembly and a second air exhaust assembly are respectively arranged in the second communicating cavity 10 and the first communicating cavity 2, and when the driving mechanism drives the sealing element 4 to slide so as to open the working chamber 3, the linkage mechanism drives the air exhaust assemblies to work, so that the working chamber 3 is in a negative pressure state. Through foretell design, when opening sealing member 4 and opening studio 3, can lead to being in the negative pressure state in the studio under the work of first subassembly and the second subassembly of bleeding, lead to probably remaining gas in the studio can not open along with it and spill over for this device uses safe and reliable more.
A detection sensor for detecting the concentration of harmful gas is further arranged in the working chamber 3, an exhaust duct 13 communicated with the working chamber 3 is arranged in the working chamber 3, and an air port 11 communicated with the exhaust duct 13 is arranged at the top of the working chamber 3.
As a further improvement of the above scheme, the front side of the cabinet body 1 is provided with a groove 5 for accommodating an upward-moving sealing element 4, the groove 5 is positioned above the opening of the working chamber 3, the sealing element 4 is a transparent cover plate with a frame embedded outside, and the sealing element 4 is connected with the inner wall of the groove 5 in a sliding manner along the longitudinal direction. The cover plate integrally formed with the cabinet body 1 can be arranged at the notch of the groove 5, so that the sealing element 4 can be contained in the groove 5, the sealing element is prevented from being directly exposed to the outside, and the use is more stable and reliable.
Referring to fig. 2, as a further improvement of the above solution, the driving mechanism includes a winch 12 fixed on the top of the cabinet 1 and a first connecting rope 7 wound on the winch 12, and the bottom end of the first connecting rope 7 is fixed on the top of the sealing member 4.
As a further improvement of the above scheme, the linkage mechanism includes a first linkage unit and a second linkage unit, and the first linkage unit and the second linkage unit respectively drive the corresponding first air exhaust assembly and the second air exhaust assembly to work. Wherein, the first air exhaust component and the second air exhaust component both exhaust human air from the working chamber, thereby leading the interior of the working chamber 3 to be in a negative pressure state.
Referring to fig. 1, fig. 2 and fig. 6, as a further improvement of the above scheme, the first linkage unit includes a movable column 6 connected in series to the first connecting rope 7, the movable column 6 is connected to the inner wall of the groove 5 in a longitudinal sliding manner, a rack is fixed on the outer side of the movable column 6 along the length direction thereof, the first linkage unit further includes a connecting shaft 33 rotatably connected in the groove 5, one end of the connecting shaft 33 movably penetrates through the second communicating cavity 10 and is connected to the first air-extracting component in the second communicating cavity 10, and a driven gear engaged with the rack is sleeved on the outer side of the connecting shaft 33 to drive the connecting shaft 33 to rotate under the driving of the movable column.
Referring to fig. 6, as a further improvement of the above solution, the first air extracting assembly includes a first air suction fan 32 installed outside the connecting shaft 33, the air suction fan may be an existing axial flow fan, and the rotation of the fan can make one side of the fan in a negative pressure state.
As a further improvement to the above-mentioned solution, referring to fig. 3 and fig. 5 in particular, the second linkage unit includes a second connecting rope 19 connected to the bottom end of the sealing member 4, a part of the second connecting rope 19 penetrates into the first communicating chamber 2, the second linkage unit further includes a first guide wheel 15 vertically rotatably disposed in the first communicating chamber 2 and a second guide wheel 16 transversely rotatably mounted in the first communicating chamber 2, and the end of the second connecting rope 19 sequentially bypasses the wheel grooves of the first guide wheel 15 and the second guide wheel 16 and is connected with a toothed plate 18 slidably connected to the inner bottom surface of the first communicating chamber 2.
As a further improvement of the above scheme, referring to fig. 3 and fig. 5 in particular, the second air pumping assembly includes a rotating shaft 17 rotatably connected in the first communicating chamber 2, a transmission gear 20 in meshing transmission with the toothed plate 18 is fixedly sleeved at the bottom of the rotating shaft 17, and a second suction fan 14 is fixed at the top end of the rotating shaft 17.
Above-mentioned scheme is at the during operation, take place to rotate under the drive of motor when capstan winch 12, drive the winding of first connecting rope 7, make sealing member 4 upward movement gradually, and along with the motion of first connecting rope, lead to the motion of 6 drive connecting axles 33 of movable column to rotate, connecting axle 33 drives first suction fan 32 work, inhale the second intercommunication chamber 10 that corresponds with the gas in the studio, and move up along with sealing member 4, second connecting rope 19 drives pinion rack 18 and slides in first intercommunication chamber 2, drive axis of rotation 17 rotates, finally drive first suction fan work, inhale the gas in the studio 3 in the first intercommunication chamber 2, thereby absorb the gas in the studio in each position, make harmful gas can not leak, guarantee the security of using.
Example 2:
referring to fig. 1, 4 and 5, as a further improvement of the above scheme, in the present embodiment, a plurality of mounting grooves 25 are respectively disposed in the first communicating chamber 2 and the second communicating chamber 10, each mounting groove 25 is internally provided with a temporary gas storage mechanism, the temporary gas storage mechanism includes a telescopic airbag 21 with an opening on one side, a sealing ring 22 sealed and fixed with an inner wall of a notch corresponding to the mounting groove 25 is disposed outside the opening of the telescopic airbag 21, a middle partition 26 is disposed in the telescopic airbag 21, at least one vent hole 24 is disposed on the middle partition 26, a movable rod 27 is movably inserted in the vent hole 24, one end of the movable rod 27 is fixed to the sealed end of the telescopic airbag 21, the other end of the movable rod 27 extends out of the vent hole 24 and is fixed with a sealing plate 23, and the sealing plate 23 is used for sealing the vent hole 24.
As a further improvement of the above scheme, the outer wall of the telescopic air bag 21 is provided with an air outlet pipe 30, the air outlet pipe 30 is provided with an electromagnetic valve 29, the air outlet end of the air outlet pipe 30 is connected with an air pipe 28, the other end of the air pipe 28 is communicated with the inside of the exhaust duct 13,
above-mentioned scheme is at the during operation, open along with the sealing member, the gas in the studio 3 enters into corresponding first intercommunication chamber or second intercommunication intracavity, thereby lead to wherein pressure grow, make flexible gasbag 21 extension, after flexible gasbag 21 extension branch sealing plate 23 imbeds corresponding air vent 24 in, flexible gasbag can't continue to extend, then open solenoid valve 29 with the air exhaust of being full of in it in discharge in exhaust duct 13, avoid gaseous to return to the studio again, after gaseous exhaust, flexible gasbag reverts initial position, so that next time work.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The intelligent alarm system for dust prevention and excessive harmful gas of the laboratory ventilation cabinet comprises a cabinet body (1), wherein a working chamber (3) is arranged on the front side of the cabinet body (1), a sealing element (4) for sealing the open side of the working chamber (3) is longitudinally arranged on the front side of the cabinet body (1) in a sliding manner, a driving mechanism for driving the sealing element (4) to slide is arranged outside the cabinet body (1), and a linkage mechanism is arranged between the sealing element (4) and the driving mechanism;
a second communicating cavity (10) and a first communicating cavity (2) which are communicated with the interior of the working chamber (3) are respectively arranged in the cabinet body (1) positioned at the upper side and the lower side of the working chamber (3);
a first air exhaust assembly and a second air exhaust assembly are respectively arranged in the second communicating cavity (10) and the first communicating cavity (2), and when the driving mechanism drives the sealing element (4) to slide so as to open the working chamber (3), the linkage mechanism drives the air exhaust assemblies to work, so that the inside of the working chamber (3) is in a negative pressure state;
A detection sensor for detecting the concentration of harmful gas is also arranged in the working chamber (3), an exhaust duct (13) communicated with the working chamber (3) is arranged in the working chamber (3), and a tuyere (11) communicated with the exhaust duct (13) is arranged at the top of the working chamber (3);
the linkage mechanism comprises a first linkage unit and a second linkage unit, and the first linkage unit and the second linkage unit respectively drive the corresponding first air exhaust assembly and the second air exhaust assembly to work;
the first linkage unit comprises a movable column (6) connected with the first connecting rope (7) in series, the movable column (6) is longitudinally connected with the inner wall of the groove (5) in a sliding mode, a rack is fixed on the outer side of the movable column (6) along the length direction of the movable column, the first linkage unit further comprises a connecting shaft (33) connected in the groove (5) in a rotating mode, one end of the connecting shaft (33) movably penetrates through the second communicating cavity (10) and is connected with a first air exhaust assembly in the second communicating cavity (10), a driven gear meshed with the rack is sleeved on the outer side of the connecting shaft (33), and the connecting shaft (33) is driven to rotate by the movable column;
the first air exhaust assembly comprises a first air suction fan (32) arranged on the outer side of the connecting shaft (33);
the second linkage unit comprises a second connecting rope (19) connected to the bottom end of the sealing element (4), part of the second connecting rope (19) penetrates into the first communication cavity (2), the second linkage unit further comprises a first guide wheel (15) vertically rotatably arranged in the first communication cavity (2) and a second guide wheel (16) transversely rotatably arranged in the first communication cavity (2), and the tail end of the second connecting rope (19) sequentially bypasses wheel grooves of the first guide wheel (15) and the second guide wheel (16) and is connected with a toothed plate (18) in sliding connection with the inner bottom surface of the first communication cavity (2);
The second air exhaust assembly comprises a rotating shaft (17) which is rotatably connected in the first communicating cavity (2), a transmission gear (20) which is in meshing transmission with the toothed plate (18) is fixedly sleeved at the bottom of the rotating shaft (17), and a second suction fan (14) is fixed at the top end of the rotating shaft (17);
the driving mechanism comprises a winch (12) fixed to the top of the cabinet body (1) and a first connecting rope (7) wound on the winch (12), and the bottom end of the first connecting rope (7) is fixed to the top of the sealing piece (4).
2. The laboratory fume hood dust-proof and excessive hazardous gas intelligent alarm system according to claim 1, characterized in that: the front side of the cabinet body (1) is provided with a groove (5) for accommodating a sealing element (4) which moves upwards, the groove (5) is positioned above an opening of the working chamber (3), the sealing element (4) is a transparent cover plate with a frame embedded into the outer part, and the sealing element (4) is connected with the inner wall of the groove (5) in a longitudinal sliding manner.
3. The laboratory fume hood dust-proof and excessive hazardous gas intelligent alarm system according to claim 1, characterized in that: all be equipped with a plurality of mounting groove (25) in first intercommunication chamber (2) and second intercommunication chamber (10), all install gaseous temporary storage mechanism in every mounting groove (25), gaseous temporary storage mechanism includes one side open-ended flexible gasbag (21), and the opening outside of flexible gasbag (21) has and corresponds notch department inner wall sealing fixed sealing washer (22) of mounting groove (25), have a intermediate bottom (26) in flexible gasbag (21), seted up at least one air vent (24) on intermediate bottom (26), movable rod (27) are worn to be equipped with by air vent (24) internalization, and the one end and the flexible gasbag (21) of movable rod (27) end are fixed, and the other end of movable rod (27) stretches out air vent (24) and is fixed with closing plate (23), and closing plate (23) are used for shutoff air vent (24).
4. The laboratory fume hood dustproof and excessive hazardous gas intelligent alarm system of claim 3, characterized in that: the outer wall of flexible gasbag (21) has outlet duct (30), installs solenoid valve (29) on outlet duct (30), and the end of giving vent to anger of outlet duct (30) is connected with air-supply pipe (28), the other end and the inside intercommunication of exhaust airway (13) of air-supply pipe (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110527962.2A CN113210388B (en) | 2021-05-14 | 2021-05-14 | Dustproof and excessive harmful gas intelligent alarm system for laboratory ventilation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110527962.2A CN113210388B (en) | 2021-05-14 | 2021-05-14 | Dustproof and excessive harmful gas intelligent alarm system for laboratory ventilation cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113210388A CN113210388A (en) | 2021-08-06 |
| CN113210388B true CN113210388B (en) | 2022-06-28 |
Family
ID=77091823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110527962.2A Active CN113210388B (en) | 2021-05-14 | 2021-05-14 | Dustproof and excessive harmful gas intelligent alarm system for laboratory ventilation cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113210388B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777234B (en) * | 2021-08-31 | 2023-10-31 | 安徽科技学院 | Prevent that dust from getting into atmospheric observation device that can self priming change windward angle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223995A (en) * | 2015-10-15 | 2016-01-06 | 上海应用技术学院 | Laboratory hood control system |
| CN206122303U (en) * | 2016-08-31 | 2017-04-26 | 上海龙翔生物医药开发有限公司 | Fume chamber for biological medicine research experiments |
| CN210647674U (en) * | 2019-09-26 | 2020-06-02 | 安徽天辉实验室设备有限公司 | Intelligent fume chamber controlling means in laboratory |
| CN111069218B (en) * | 2019-12-23 | 2021-08-17 | 北京汉昌绿源环保工程有限公司 | Mechanical air supply and exhaust integrated VAV (vacuum air volume) ventilation cabinet |
| KR102169257B1 (en) * | 2020-08-06 | 2020-10-23 | 주식회사 휴랩 | Fume hood with quick damper control |
-
2021
- 2021-05-14 CN CN202110527962.2A patent/CN113210388B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113210388A (en) | 2021-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113210388B (en) | Dustproof and excessive harmful gas intelligent alarm system for laboratory ventilation cabinet | |
| CN107019578A (en) | A kind of asphyxiator with gas concentration lwevel control function | |
| CN216553632U (en) | Dampproofing airtight door | |
| CN113266321A (en) | Safety protection device of chemical injection pry | |
| CN114509115A (en) | Mine safety intelligence patrols and examines robot | |
| CN115178031A (en) | Radioactive waste gas purifying device | |
| CN209487378U (en) | A kind of moving seesaw-type anti-blast light switch | |
| CN207907430U (en) | A kind of fire control smoke exhausting type ventilator | |
| CN209575901U (en) | A kind of inert gas shielding Suction filtration device | |
| CN111855919A (en) | Exhaust monitoring device based on sensor | |
| CN112636227A (en) | Closed mine block terminal maintenance of equipment | |
| CN211043126U (en) | Infrared oil detector with smoke absorption function | |
| CN115569332B (en) | High-rise building high-altitude fire-fighting escape system and method thereof | |
| CN214416716U (en) | Oxygen concentration warning centrifuge | |
| CN111589039A (en) | Household fire-fighting equipment storage and emergency refuge device | |
| CN118385237B (en) | Laboratory intelligent ventilation cabinet capable of improving emission and use effects | |
| CN216704423U (en) | Air pressure detection control structure of biological safety cabinet | |
| CN218574555U (en) | Laboratory fume chamber window foreign matter detection device | |
| CN218030858U (en) | Respirator for hydraulic oil tank | |
| CN221096285U (en) | Combined fire-fighting smoke exhaust window | |
| CN219285185U (en) | Sensitivity detection device for gas leakage alarm | |
| CN220101074U (en) | Biological safety cabinet of upturning door type | |
| CN203678163U (en) | Novel exhaust gas treatment device | |
| CN116163793B (en) | Protection system and equipment for mine | |
| CN216204000U (en) | Pressure sensor for building fire control ventilation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |