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Scanning leak detection high-efficiency negative pressure exhaust hood

An exhaust hood, high-efficiency technology, applied in the direction of removing smoke and dust, cleaning methods and utensils, chemical instruments and methods, etc., to achieve the effect of efficient work, environmental protection, real-time online detection of exhaust air

Active Publication Date: 2016-10-05
苏州市金燕净化设备工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem mainly solved by the present invention is to provide a high-efficiency negative pressure exhaust hood for scanning leak detection, which can solve the above-mentioned problems existing in the existing exhaust hood

Method used

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  • Scanning leak detection high-efficiency negative pressure exhaust hood
  • Scanning leak detection high-efficiency negative pressure exhaust hood
  • Scanning leak detection high-efficiency negative pressure exhaust hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A scanning leak detection high-efficiency negative pressure exhaust hood, including a box body 4, the box body 4 is a hollow structure with upper and lower ends open, the diameter of the upper port is smaller than the diameter of the lower port; the upper port of the box body 4 A biological sealer 1 is built in, and a high-efficiency filter 3 is built in its hollow part. Both sides of the high-efficiency filter 3 are fixed by a fixed pressing plate 7, and the lower end of the fixed pressing plate 7 is fixed with a set screw 8.

[0021] A sealing frame 6 is provided above the connection between the high-efficiency filter 3 and the fixed pressure plate 7, and a liquid tank sealant 5 is also provided between the sealing frame 6 and the high-efficiency filter 3. The sealing function can prevent the gas from overflowing through the gap between the high-efficiency filter and the fixed pressure plate. On one of the sealing frames 6, a gas collecting box 11 and a transmission b...

Embodiment 2

[0027] The difference from Embodiment 1 is that a dedicated exhaust fan is installed on the pipeline at the upper port of the exhaust hood.

[0028] This kind of exhaust hood is a dynamic scanning leak detection high-efficiency negative pressure exhaust hood. The gas filtered through the scanning leak detection and high-efficiency filtration is discharged through the pipeline through a dedicated exhaust fan. Its advantage is that the exhaust air volume is stable and is not affected. Influenced by other exhaust equipment, it is more suitable for experiments in atmospheric laboratory operations. Such as centrifugation, packaging, etc.

[0029] The above two high-efficiency negative pressure exhaust hoods for scanning leak detection adopt linear scanning leak detection method to perform in-situ leak detection on high-efficiency filters, and adopt the method of synchronous disinfection with the laboratory to disinfect and sterilize high-efficiency filters. And it can display the ...

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Abstract

The invention discloses a scanning leakage detection efficient negative-pressure exhaust hood which comprises a box body. The hollow portion of the box body is internally provided with an efficient filter. The two sides of the efficient filter are fixed through fixing pressing plates. Sealing frames are arranged above the positions where the efficient filter is connected with the fixing pressing plates. A gas collection box and a transmission box are sequentially installed on one sealing frame from the box wall to the interior of the box body. A support is fixedly arranged on the other sealing frame. A linear scanning device and a sampling pipe are installed between the transmission box and the support. One end of the sampling pipe is connected with the linear scanning device, and the other end of the sampling pipe is communicated with the gas collection box. According to the scanning leakage detection efficient negative-pressure exhaust hood, noxious gas can be efficiently filtered out and exhausted inside a working area, noxious substances are prevented from polluting environment and an exhaust pipeline, and safety of environment and safety of an experimenter are protected; the linear scanning leakage detection mode is adopted to conduct in-situ leakage detection on the efficient filter, the mode of synchronous disinfection with a laboratory is adopted to conduct sterilization, and the scanning leakage detection efficient negative-pressure exhaust hood has the advantages of being little in investment, protecting environment, conducting efficient exhaust and the like.

Description

technical field [0001] The invention relates to the field of exhaust equipment, in particular to a scanning leak detection high-efficiency negative pressure exhaust hood. Background technique [0002] The traditional common exhaust hood sucks the indoor air into the exhaust hood first, and then discharges the harmful gas away. This exhaust hood will endanger the environment during work and pollute the exhaust pipeline. In the prior art, in order to avoid the pollution of the environment and the exhaust pipeline, the usual improvement method is to add corresponding air filtration and disinfection systems or devices at the inlet of the exhaust fan. The disadvantages of this improvement method are: large investment; In-situ leak detection and disinfection; after long-term operation, the resistance of the filter increases, and the exhaust air volume is insufficient, which cannot cause negative pressure in the overrun area or around the equipment, and cannot effectively protect ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B15/04
CPCB08B15/04
Inventor 谢景欣沈卫民
Owner 苏州市金燕净化设备工程有限公司
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