CN207325554U - A kind of novel laboratory vent cabinet - Google Patents
A kind of novel laboratory vent cabinet Download PDFInfo
- Publication number
- CN207325554U CN207325554U CN201721343532.0U CN201721343532U CN207325554U CN 207325554 U CN207325554 U CN 207325554U CN 201721343532 U CN201721343532 U CN 201721343532U CN 207325554 U CN207325554 U CN 207325554U
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- CN
- China
- Prior art keywords
- conductive sheets
- cabinet
- switch
- main extension
- rack
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of novel laboratory vent cabinet, including cabinet, hood is communicated with the top of the cabinet, three-way pipe is communicated with the top of hood, main extension and standby fan are respectively equipped with three-way pipe.The utility model is simple in structure, close first switch, main extension is started to work, filthy gas in cabinet is discharged, in the process, choke plate is under the action of air-flow, band moving slide-bar moves up, latch on slide bar is engaged with gear, wheel and rack engages, two the first conductive sheets and two the second conductive sheets are made to separate, standby fan and electric bell are in off state, when main extension is damaged because of failure, there is no air-flow to continue to act on choke plate, under spring force and choke plate gravity, rack moves up, two the first conductive sheets and two the second conductive sheets contact, circuit is connected, standby fan continues to be vented, ensure that experiment is normally carried out, electric bell reminds people to overhaul main extension.
Description
Technical field
It the utility model is related to vent cabinet technical field, more particularly to a kind of novel laboratory vent cabinet.
Background technology
Vent cabinet is an indispensable part in laboratory ventilation design.In order to make laboratory worker not
Suck or swallow should have in the chemical substance and organism, laboratory that some are poisonous, can causing a disease or toxicity is unknown it is good
Ventilation.To prevent the absorption of some steams, gas and particulate (smog, coal smoke, dust and aerosol), polluter must use ventilation
Cabinet, ventilator cowling or the method for local ventilation remove；During being tested using vent cabinet, wind turbine is frequently encountered because of failure
The situation of cisco unity malfunction, influences to test the timely discharge of filthy gas, delays experiment progress.
Utility model content
The purpose of this utility model is and a kind of novel laboratory proposed in order to solve shortcoming existing in the prior art
Vent cabinet.
To achieve these goals, the utility model employs following technical solution：
A kind of novel laboratory vent cabinet, including cabinet, are communicated with hood, the top of hood at the top of the cabinet
Three-way pipe is communicated with, main extension and standby fan are respectively equipped with three-way pipe, the side of the cabinet is respectively equipped with first switch
And power supply, the top of the hood are equipped with electric bell, the inner wall of the hood is connected with mounting blocks, mounting blocks by supporting rod
Through hole is equipped with, mounting blocks are equipped with two on the symmetrically arranged installation cavity of through hole, the interior second switch respectively of two installation cavitys
With the 3rd switch, installation cavity is connected by circular trough with through hole, slide bar is plugged with through hole, the lower end of slide bar is connected with choke
Plate, the inner wall of circular trough is rotatably connected to gear, and slide bar is equipped with the latch engaged with gear, the interior bottom of the installation cavity
The rack engaged with gear is connected with by spring, the second switch includes two the first conductive sheets, and two first conductive
Inner wall of the piece respectively with one of rack and installation cavity is connected, and the 3rd switch includes two the second conductive sheets, and two
Inner wall of second conductive sheet respectively with another rack and installation cavity is connected, the power supply, first switch, main extension, spare wind
Mechanical, electrical bell, two the first conductive sheets and two the second conductive sheet sets are into mixed connection circuit.
Preferably, the upper end of the slide bar is connected with limited block.
Preferably, the number of the supporting rod has three, and is angularly distributed between three supporting rods.
Preferably, side of the rack away from gear is embedded with ball.
Compared with prior art, the beneficial effects of the utility model are：The utility model is simple in structure, and closure first is opened
Close, main extension is started to work, and the filthy gas in cabinet is discharged, and in the process, choke plate drives under the action of air-flow
Slide bar moves up, and the latch on slide bar is engaged with gear, and wheel and rack engagement, makes two the first conductive sheets and two second
Conductive sheet separates, and standby fan and electric bell are in off state, and when main extension is damaged because of failure, no air-flow continues to act on
In choke plate, under spring force and choke plate gravity, rack moves up, two the first conductive sheets and two second
Conductive sheet contacts, and circuit is connected, and standby fan continues to be vented, and ensures that experiment is normally carried out, and electric bell reminds people to main extension
Overhauled.
Brief description of the drawings
Fig. 1 be the utility model proposes structure diagram；
Fig. 2 is part A schematic enlarged-scale view in Fig. 1；
Fig. 3 is the circuit diagram that the utility model is related to.
In figure：Main extension 1, hood 2, cabinet 3, supporting rod 4, choke plate 5, slide bar 6, standby fan 7, electric bell 8, first
Switch the 9, first conductive sheet 10, mounting blocks 11, spring 12, the second conductive sheet 13, rack 14, gear 15.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
With reference to Fig. 1-3, a kind of novel laboratory vent cabinet, including cabinet 3, the top of cabinet 3 are communicated with hood 2, arrange
The top of gas hood 2 is communicated with three-way pipe, and main extension 1 and standby fan 7 are respectively equipped with three-way pipe, and the side of cabinet 3 is set respectively
There are first switch 9 and power supply, the top of hood 2 is equipped with electric bell 8, and the inner wall of hood 2 is connected with mounting blocks by supporting rod 4
11, the number of supporting rod 4 has three, and is angularly distributed between three supporting rods 4, and mounting blocks 11 are equipped with through hole, mounting blocks
11 are equipped with two on the symmetrically arranged installation cavity of through hole, the interior second switch respectively of two installation cavitys and the 3rd switch, installation
Chamber is connected by circular trough with through hole, is plugged with slide bar 6 in through hole, and the lower end of slide bar 6 is connected with choke plate 5, circular trough it is interior
Wall is rotatably connected to gear 15, and slide bar 6 is equipped with the latch engaged with gear 15, and the upper end of slide bar 6 is connected with limited block, prevents
On-slip bar 6 comes off, and the interior bottom of installation cavity is connected with the rack 14 engaged with gear 15 by spring 12, and second switch includes two
A first conductive sheet 10, and inner wall of two the first conductive sheets 10 respectively with one of rack 14 and installation cavity is connected, the 3rd
Switch includes two the second conductive sheets 13, and two the second conductive sheets 13 connect with the inner wall of another rack 14 and installation cavity respectively
Connect, side of the rack 14 away from gear 15 is embedded with ball, reduces friction, power supply, first switch 9, main extension 1, standby fan 7,
8, two the first conductive sheets 10 of electric bell and two the second conductive sheet 13 composition mixed connection circuits.
Operation principle：First switch 9 is closed, main extension 1 is started to work, and the filthy gas in cabinet 3 is discharged, herein mistake
Cheng Zhong, choke plate 5 is under the action of air-flow, and band moving slide-bar 6 moves up, and the latch on slide bar 6 is engaged with gear 15, gear 15
Engaged with rack 14, two the first conductive sheets 10 and two the second conductive sheets 13 is separated, standby fan 7 and electric bell 8 are in
Off state, when main extension 1 is damaged because of failure, no air-flow continues to act on choke plate 5, in 12 elastic force of spring and choke
Under 5 gravity of plate, rack 14 moves up, and two the first conductive sheets 10 and two the second conductive sheets 13 contact, and circuit connects
Logical, standby fan 7 continues to be vented, and ensures that experiment is normally carried out, and electric bell 8 reminds people to overhaul main extension 1.
The above, is only the preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality
New technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (4)
1. a kind of novel laboratory vent cabinet, including cabinet (3), it is characterised in that be communicated with exhaust at the top of the cabinet (3)
Cover (2), be communicated with three-way pipe at the top of hood (2), main extension (1) and standby fan (7) are respectively equipped with three-way pipe, it is described
The side of cabinet (3) is respectively equipped with first switch (9) and power supply, and the top of the hood (2) is equipped with electric bell (8), the row
The inner wall of gas hood (2) is connected with mounting blocks (11) by supporting rod (4), and mounting blocks (11) are equipped with through hole, on mounting blocks (11)
Lead to equipped with two on the symmetrically arranged installation cavity of through hole, the interior second switch respectively of two installation cavitys and the 3rd switch, installation cavity
Cross circular trough to connect with through hole, slide bar (6) is plugged with through hole, the lower end of slide bar (6) is connected with choke plate (5), circular trough
Inner wall is rotatably connected to gear (15), and slide bar (6) is equipped with the latch engaged with gear (15), the interior bottom of the installation cavity
The rack (14) engaged with gear (15) is connected with by spring (12), the second switch includes two the first conductive sheets
(10), and inner wall of two the first conductive sheets (10) respectively with one of rack (14) and installation cavity is connected, and the described 3rd opens
Pass includes two the second conductive sheets (13), and two the second conductive sheets (13) are interior with another rack (14) and installation cavity respectively
Wall connects, the power supply, first switch (9), main extension (1), standby fan (7), electric bell (8), two the first conductive sheets (10)
Mixed connection circuit is formed with two the second conductive sheets (13).
2. a kind of novel laboratory vent cabinet according to claim 1, it is characterised in that the upper end of the slide bar (6) connects
It is connected to limited block.
A kind of 3. novel laboratory vent cabinet according to claim 1, it is characterised in that the number of the supporting rod (4)
There are three, and be angularly distributed between three supporting rods (4).
4. a kind of novel laboratory vent cabinet according to claim 1, it is characterised in that the rack (14) is away from gear
(15) side is embedded with ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721343532.0U CN207325554U (en) | 2017-10-18 | 2017-10-18 | A kind of novel laboratory vent cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721343532.0U CN207325554U (en) | 2017-10-18 | 2017-10-18 | A kind of novel laboratory vent cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207325554U true CN207325554U (en) | 2018-05-08 |
Family
ID=62365697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721343532.0U Expired - Fee Related CN207325554U (en) | 2017-10-18 | 2017-10-18 | A kind of novel laboratory vent cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207325554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111447714A (en) * | 2020-04-07 | 2020-07-24 | 义乌招娣贸易有限公司 | House electric light control device based on ratchet intermittent rotation |
-
2017
- 2017-10-18 CN CN201721343532.0U patent/CN207325554U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111447714A (en) * | 2020-04-07 | 2020-07-24 | 义乌招娣贸易有限公司 | House electric light control device based on ratchet intermittent rotation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20211018 |