CN204710836U - A kind of ventilation hoods for laboratories system - Google Patents
A kind of ventilation hoods for laboratories system Download PDFInfo
- Publication number
- CN204710836U CN204710836U CN201520365826.8U CN201520365826U CN204710836U CN 204710836 U CN204710836 U CN 204710836U CN 201520365826 U CN201520365826 U CN 201520365826U CN 204710836 U CN204710836 U CN 204710836U
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- Prior art keywords
- duct
- exhaust duct
- induced duct
- vent cabinet
- cabinet body
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Abstract
The utility model relates to a kind of ventilation hoods for laboratories system, and comprise vent cabinet body, blast main, be arranged on the gas purifier on blast main and connect the air exhauster of gas purifier, the top of described vent cabinet body is provided with multiple exhaust duct; One end of described exhaust duct is communicated with vent cabinet body interior; The other end of exhaust duct is connected with induced duct; Described induced duct is bend pipe; The angle of bend of induced duct is 90 °-135 °; The height of described induced duct is the 1/2-1/3 of blast main height, and the height of induced duct successively decreases successively.The utility model can make gas flow resistance reduce 20%-30%; Reduce exhaust duct gas flow resistance, improve exhaust effect, thus reduce Laboratory air pollution.
Description
Technical field
The utility model relates to a kind of ventilating system, especially a kind of ventilation hoods for laboratories system.
Background technology
Vent cabinet is widely used in industry and school's chemical laboratories such as oil, chemical industry, medicine, and the design of exhaust system for ventilation cabinets has a significant impact ventilation effect.
At present, vent cabinet generally uses in groups (general 2-4), ventilating system is made up of airduct, air-introduced machine, air-valve and gas cleaning plant etc., exhaust duct and the air draft house steward 90 degree of each vent cabinet connects, fierce turbulent flow is formed because 90 degree, air-flow intersects, cause flowing resistance to increase, have a strong impact on exhaust effect.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of ventilation hoods for laboratories system, can reduce exhaust duct gas flow resistance, improves exhaust effect, thus reduces Laboratory air pollution.
The utility model solves the technical scheme that its technical problem adopts: a kind of ventilation hoods for laboratories system, comprise vent cabinet body, blast main, be arranged on the gas purifier on blast main and connect the air exhauster of gas purifier, vent cabinet body is a ventilation group normally; The top of each vent cabinet of ventilation group is provided with exhaust duct; One end of described exhaust duct is communicated with vent cabinet body interior; The other end of exhaust duct is connected with induced duct; Described induced duct is bend pipe; The angle of bend of induced duct is 90 °-135 °; The height of described induced duct is the 1/2-1/3 of blast main height, and the height of induced duct successively decreases successively.
Further, in order to better carry out air draft, exhaust duct described in the utility model and vent cabinet body junction are provided with centrifugal blower and motor-driven valve; Described centrifugal blower is arranged on the below of motor-driven valve.
Further say, in order to increase the versatility of system, exhaust duct described in the utility model and induced duct are wholely set or detachably arrange.User can improve as required on the basis not changing original vent cabinet system architecture.
Further say, in order to adapt to different experimental situations, exhaust duct described in the utility model and/or induced duct are plastic tube, steel pipe or glass tube.
The beneficial effects of the utility model are, solve the defect existed in background technology, and gas flow resistance can be made to reduce 20%-30%; Reduce exhaust duct gas flow resistance, improve exhaust effect, thus reduce Laboratory air pollution.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model;
In figure: 1, vent cabinet body; 2, exhaust duct; 3, induced duct; 4, blast main; 5, gas purifier; 6, air exhauster; 7, centrifugal blower; 8, motor-driven valve; 9, flange.
Detailed description of the invention
With preferred embodiment, the utility model is described in further detail by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As shown in Figure 1, in prior art, vent cabinet exhaust duct and blast main are 90 degree and are connected, and form fierce turbulent flow due to air-flow 90 degree of phase intersections, thus cause flowing resistance to increase, and have a strong impact on exhaust effect.
A kind of ventilation hoods for laboratories system shown in Fig. 2, comprise vent cabinet body, blast main, be arranged on the gas purifier on blast main and connect the air exhauster of gas purifier, the top of vent cabinet body is provided with exhaust duct; One end of exhaust duct is communicated with vent cabinet body interior; The other end of exhaust duct is connected with induced duct; That one end that exhaust duct is connected with vent cabinet body is provided with centrifugal blower and motor-driven valve; Centrifugal blower is arranged on the below of motor-driven valve.Exhaust duct and/or induced duct are plastic tube, steel pipe or glass tube.
Induced duct is bend pipe; The angle of bend of induced duct is 90 °-135 °; The height of induced duct is the 1/2-1/3 of blast main height.
Exhaust duct and induced duct are wholely set or detachably arrange.User can improve as required on the basis not changing original vent cabinet system architecture.During detachable connection, exhaust duct and induced duct pass through Flange joint.
During the utility model air draft, due to the warp architecture of induced duct self, gas can lead according to its structure, thus gas flow resistance can be made to reduce 20%-30%.
The just detailed description of the invention of the present utility model described in above description, various illustrating is not construed as limiting flesh and blood of the present utility model, person of an ordinary skill in the technical field after having read description can to before described detailed description of the invention make an amendment or be out of shape, and do not deviate from essence and the scope of utility model.
Claims (4)
1. a ventilation hoods for laboratories system, comprises vent cabinet body, blast main, is arranged on the gas purifier on blast main and connects the air exhauster of gas purifier, it is characterized in that: the top of described vent cabinet body is provided with exhaust duct; One end of described exhaust duct is communicated with vent cabinet body interior; The other end of exhaust duct is connected with induced duct; Described induced duct is bend pipe; The angle of bend of induced duct is 90 °-135 °; The height of described induced duct is the 1/2-1/3 of blast main height; And the height of induced duct successively decreases successively.
2. a kind of ventilation hoods for laboratories system as claimed in claim 1, is characterized in that: described exhaust duct and vent cabinet body junction are provided with centrifugal blower and motor-driven valve; Described centrifugal blower is arranged on the below of motor-driven valve.
3. a kind of ventilation hoods for laboratories system as claimed in claim 1, is characterized in that: described exhaust duct and induced duct are wholely set or detachably arrange.
4. a kind of ventilation hoods for laboratories system as claimed in claim 1, is characterized in that: described exhaust duct and/or induced duct are plastic tube, steel pipe or glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365826.8U CN204710836U (en) | 2015-05-29 | 2015-05-29 | A kind of ventilation hoods for laboratories system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365826.8U CN204710836U (en) | 2015-05-29 | 2015-05-29 | A kind of ventilation hoods for laboratories system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204710836U true CN204710836U (en) | 2015-10-21 |
Family
ID=54309866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520365826.8U Expired - Fee Related CN204710836U (en) | 2015-05-29 | 2015-05-29 | A kind of ventilation hoods for laboratories system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204710836U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108160652A (en) * | 2018-02-12 | 2018-06-15 | 湖南正海现代实验室设备有限公司 | A kind of novel ventilated guard system for effecting a radical cure resolution vent cabinet condensate return |
| CN112775139A (en) * | 2021-02-23 | 2021-05-11 | 广西壮族自治区蚕业技术推广站 | Novel moth hair downdraft air draft purification system |
-
2015
- 2015-05-29 CN CN201520365826.8U patent/CN204710836U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108160652A (en) * | 2018-02-12 | 2018-06-15 | 湖南正海现代实验室设备有限公司 | A kind of novel ventilated guard system for effecting a radical cure resolution vent cabinet condensate return |
| CN112775139A (en) * | 2021-02-23 | 2021-05-11 | 广西壮族自治区蚕业技术推广站 | Novel moth hair downdraft air draft purification 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20200529 |