CN203648962U - Air exhaust type fuming cupboard of venturi tube - Google Patents
Air exhaust type fuming cupboard of venturi tube Download PDFInfo
- Publication number
- CN203648962U CN203648962U CN201320871804.XU CN201320871804U CN203648962U CN 203648962 U CN203648962 U CN 203648962U CN 201320871804 U CN201320871804 U CN 201320871804U CN 203648962 U CN203648962 U CN 203648962U
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- CN
- China
- Prior art keywords
- venturi tube
- air
- fuming cupboard
- main body
- 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.)
- Expired - Fee Related
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- Devices For Use In Laboratory Experiments (AREA)
- Ventilation (AREA)
Abstract
The utility model discloses an air exhaust type fuming cupboard of a venturi tube, and belongs to ventilation devices for laboratory. The fuming cupboard is formed by a fuming cupboard main body, an electric air door, a PVC air pipe, a draught fan, a venturi tube air exhaust pipe and a control knob; the electric air door is installed on the fuming cupboard main body; the PVC air pipe is connected with the venturi tube air exhaust pipe; the draught fan is connected with the venturi tube air exhaust pipe; and via the control knob on the fuming cupboard main body, the opening size of the electric air door is controlled. By use of the above structure, air flow generated by the draught fan is vacuumed into the PVC air pipe via the venturi tube air exhaust pipe connected with the draught fan; by adjusting the control knob, the opening angle of the electric air door, the ventilating flow in the PVC air pipe is increased or reduced; and via the electric air door, the ventilation quantity of the fuming cupboard can be effectively controlled via the electric air door, so energy saving effects are achieved.
Description
Technical field
The utility model relates to a kind of use for laboratory ventilation unit, is a kind of Venturi tube air-exhaust type fume hood specifically.
Background technology
In the chemical experiment course of work, often can give off poisonous gas, so experimental bench needs ventilation unit to discharge toxic gas.And existing laboratory normally a fume hood one Fans is installed, ventilation size is fixing, ventilating fan is installed in tradition ventilation cupboard, its shortcoming is that a large amount of sour gas of chemical reaction generation are very serious to the corrosion of ventilating fan, loss is very large, when ventilating fan is corroded by acid gas in tradition ventilation cupboard, there is impurity to come off, chemical experiment process is impacted.
Summary of the invention
In order to solve the technical problem of above-mentioned existence, the utility model provides one can reduce fume hood service wear, and the effective Venturi tube air-exhaust type fume hood of air draft.
The purpose of this utility model is achieved through the following technical solutions: Venturi tube air-exhaust type fume hood, is made up of fume hood main body, MOD, PVC airduct, blower fan, Venturi tube exhaust duct and control handle; A MOD is installed above fume hood main body, and PVC airduct is connected with Venturi tube exhaust duct, and blower fan is connected with Venturi tube air draft exhaust duct, by the unlatching size of the control handle control MOD in fume hood main body.
The beneficial effects of the utility model: the utility model adopts said structure, when use, the air-flow that blower fan produces accelerates air draught by the Venturi tube inner conical tube chamber connecting from the coarse to fine air-flow, make it produce powerful movement air flow, make gas form a region of no pressure at the rear side of Venturi tube exhaust duct outlet, produce the smoking effect vacuumizing.When a large amount of toxic gases that produce in fume hood in chemical experiment process, the air-flow that blower fan produces is inhaled vacuum by the Venturi tube exhaust duct connecting, in suction PVC airduct, can be by regulating control handle to regulate the opening angle of MOD, increase or reduce vent flow in PVC airduct, accelerate the discharge of toxic gas.Avoid poisonous, harmful highly acid gas directly to contact with blower fan by Venturi tube exhaust duct is set, made fume hood meet the requirement of safety anti-explosive, reduced in use high loss of fume hood; Venturi tube exhaust duct can produce high ventilation, improves drafting efficiency, also can effectively control by MOD the ventilation of fume hood, has reached energy-conservation effect.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Venturi tube exhaust duct profile.
Detailed description of the invention
As shown in Fig. 1, Venturi tube air-exhaust type fume hood, is made up of fume hood main body 1, MOD 2, PVC airduct 3, blower fan 4, Venturi tube exhaust duct 5 and control handle 6; A MOD 2 is installed above fume hood main body 1, and PVC airduct 3 is connected with Venturi tube exhaust duct 5, and blower fan 4 is connected with Venturi tube air draft exhaust duct 5.Control MOD 2 by the control handle 6 in fume hood main body 1 and open size.
Operation principle of the present utility model: when use, one Fans can connect two or many fume hoods simultaneously, when a large amount of toxic gases that produce in fume hood in chemical experiment process, the air-flow that startup blower fan 4 produces is inhaled vacuum by the Venturi tube exhaust duct 5 connecting, in suction PVC airduct 3, regulate the aperture of MOD 2 by control handle 6, increase or reduce vent flow in PVC airduct, accelerate the discharge of toxic gas.
Claims (1)
1. Venturi tube air-exhaust type fume hood, is made up of fume hood main body (1), MOD (2), PVC airduct (3), blower fan (4), Venturi tube exhaust duct (5) and control handle (6); In fume hood main body (1) top, a MOD (2) is installed, PVC airduct (3) is connected with Venturi tube exhaust duct (5), blower fan (4) is connected with Venturi tube air draft exhaust duct (5), controls the unlatching size of MOD (2) by the control handle (6) in fume hood main body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871804.XU CN203648962U (en) | 2013-12-27 | 2013-12-27 | Air exhaust type fuming cupboard of venturi tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871804.XU CN203648962U (en) | 2013-12-27 | 2013-12-27 | Air exhaust type fuming cupboard of venturi tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203648962U true CN203648962U (en) | 2014-06-18 |
Family
ID=50915402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320871804.XU Expired - Fee Related CN203648962U (en) | 2013-12-27 | 2013-12-27 | Air exhaust type fuming cupboard of venturi tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203648962U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860545A (en) * | 2019-12-09 | 2020-03-06 | 大唐东北电力试验研究院有限公司 | Novel unpowered micro-negative pressure deodorization system |
-
2013
- 2013-12-27 CN CN201320871804.XU patent/CN203648962U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860545A (en) * | 2019-12-09 | 2020-03-06 | 大唐东北电力试验研究院有限公司 | Novel unpowered micro-negative pressure deodorization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20141227 |
|
| EXPY | Termination of patent right or utility model |