CN201669258U - Scanning leak detection high-efficiency exhaust device - Google Patents
Scanning leak detection high-efficiency exhaust device Download PDFInfo
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- CN201669258U CN201669258U CN2009203127259U CN200920312725U CN201669258U CN 201669258 U CN201669258 U CN 201669258U CN 2009203127259 U CN2009203127259 U CN 2009203127259U CN 200920312725 U CN200920312725 U CN 200920312725U CN 201669258 U CN201669258 U CN 201669258U
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Abstract
The utility model discloses a high-efficiency exhaust device capable of realizing in-situ scanning leak detection for high-efficiency filters and mounted in a high-level biological safety laboratory. A high-efficiency filter is disposed on an exhaust port of a box of the exhaust device, and a scanning leak detector is mounted at a backward position of the high-efficiency filter and comprises a scanning probe, a slider, a lead screw, a shaft coupler, a worm gear, a worm, a motor and a travel switch, wherein two ends of the lead screw are fixed onto the box, the slider is disposed on the lead screw, the scanning probe is fixed on the slider, the worm is connected with the lead screw inside the box through the shaft coupler, the motor, the worm gear and the worm are fixed outside the box, the motor is connected with the worm, the travel switch is adjacent to the worm gear, the worm gear is connected with a switch contact plate, and the switch contact plate contacts with the travel switch to control stroke of the scanning probe. The high-efficiency exhaust device can be mounted on the top of a clean room.
Description
Technical field
The utility model relates to bio-safety guard technology and equipment field, more particularly, is a kind of safe and reliable high efficiency exhaustion device that can realize the on-the-spot leak detection of filter.
Background technology
The many experimental implementation common, routine of biocontainment laboratory all can produce aerosol, and its particle can retain in room air for a long time, and the part particle can enter lung along with the air that the people breathes and cause infection; The harmful aerosol or the indoor pollution air of biocontainment laboratory are discharged in the atmosphere, will infect the human or animal, pollute surrounding environment, serious threat human life health, even cause great public health event.
The existing high-grade biocontainment laboratory of China adopts the building enclosure below that the high efficiency exhaustion mouth is set substantially, by the mode air draft of sandwich wall.Existing problems are: cannot or hardly carry out the original position leak detection to high efficiency particle air filter, " laboratory bio-safety handbook (the 3rd edition) and GB19489-2008 " the general requirement of laboratory bio-safety " are about the regulation of " all HEPA filters must be mounted to and can carry out detection mode " can not to satisfy WHO.
So far, the high-grade biocontainment laboratory of western developed country prevents that for the protection environment contaminated air and aerosol from leaking, and the high-efficiency air filtering unit with original position leak detection function has been used in most high-grade biocontainment laboratory air draft.On the one hand, the high-efficiency air filtering unit complex structure costs an arm and a leg, and domestic being difficult to accepted; On the other hand, high-efficiency air filtering unit all is placed on the equipment room of laboratory top layer, and the existing high-grade biocontainment laboratory of China does not generally possess the mechanical floor that can place high-efficiency air filtering unit.At present, the construction of China's biocontainment laboratory and transformation press for simple in structure, easy and simple to handle, moderate laboratory high efficiency exhaustion purifier.
The utility model content
The purpose of this utility model is to provide a kind of original position scanning leak detection that realizes high efficiency particulate air filter, is installed on the high efficiency exhaustion device of high-grade biocontainment laboratory.
The utility model scanning leak detection high efficiency exhaustion device is achieved by following proposal, and the casing exhaust outlet is provided with high efficiency particulate air filter, and the scanning leak detection device is installed in described high efficiency particulate air filter downstream; The scanning leak detection device comprises scanning head, slide block, leading screw, shaft coupling, worm gear, worm screw, motor and travel switch, casing is fixed at the leading screw two ends, slide block is arranged on the leading screw, scanning head is fixed in slide block, and worm screw is connected with the leading screw of box house by shaft coupling, and motor, worm gear and worm screw are fixed on the casing outside, motor is connected with worm screw, travel switch and worm gear are adjacent, and worm gear connects the switch contact, and switch contact touching travel switch is controlled the scanning head stroke.
Shaft coupling described in the utility model passes casing and seals by seal.Described scanning head is a tubular structure, and length is suitable with tested high efficiency particulate air filter length, and thief hatch is positioned on the sampling pipe, and isometric with sampling pipe, is shaped as slit-type.Described scanning head is a stainless pipe, and scanning head is communicated with two arms, and two arms connections converge to thief hatch.The motion that described scanning head is made up of above-mentioned worm and gear combines with travel switch and carries out Stroke Control.
Characteristics of the present utility model are that inside, air port is provided with the line sweep automatic leak-checking device, can realize the on-the-spot scanning leak detection to high efficiency particle air filter; Air port and line sweep automatic leak-checking device adopt stainless steel to make, anti-disinfectant corrosion.The utility model can be installed on the top, toilet, does not need higher mechanical floor, and filter adopts the original position scanning leak detection.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model scanning means structural representation;
Fig. 3 is one of the utility model scanning sample header structure figure;
Fig. 4 is two of the utility model scanning sample header structure figure.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 1, the casing exhaust outlet is provided with high efficiency particulate air filter 1, and high efficiency particulate air filter 1 is fixing by frame 2 being installed and being compressed frame 3, and casing high efficiency particulate air filter front end is provided with sampled upstream interface 5, casing high efficiency particulate air filter rear end is provided with sampled downstream mouth 6, and the casing top is provided with biological airtight valve 7.
As shown in Figure 2, the scanning leak detection device comprises parts such as scanning head 4, slide block 8, leading screw 9, worm gear 10, worm screw 11, motor 12, travel switch 13.Scanning head 4 all adopts the stainless steel welding production.Motor 12 and worm and gear are fixed on the casing outside, motor is connected with worm screw, worm screw is connected with the leading screw of box house by shaft coupling, the leading screw bottom installs and fixes base 14, shaft coupling passes casing and seals by seal 15, worm gear 10 connects switch contact 16, and the switch contact can be touched 13 pairs of scanning head strokes of travel switch and control.Scanning head 4 is connected with the sampled downstream mouth of high efficiency filter device by antistatic pipe 18, and the sampled downstream mouth connects airtight valve and fast interface 17, by special sampling software, realizes the monitoring of leak source and determining of position.
As shown in Figure 3 and Figure 4, pipeline section 19 is the main scanning bar in the scanning head 4, its two ends stainless steel welded seal, bar seam on the pipeline section 19 is thief hatch 20, the pipeline section of pipeline section 21 for being connected with pipeline section 19, tie point is symmetrically distributed in respectively apart from the position of pipeline section 19 two ends certain-lengths, and pipeline section 22 1 ends are communicated with pipeline section 21 centre positions, and the other end connects particle counting device or photometer.For satisfying corrosion-resistant requirement, whole scanning sample device is made by stainless steel, inner wall smooth, and soldering is all adopted in the connection of pipeline section, reduces the burr of pipeline section weld inside as far as possible.When the high efficiency particulate air filter sampled downstream, thief hatch 20 should be over against the high efficiency particulate air filter outlet air surface, apart from about filter surfaces 25mm.Thief hatch 20 length of scanning sample head 4 are suitable with the filter detection width, can realize high efficiency particulate air filter whole scannings of (comprise frame is installed).
On-the-spot leak detection flow process: when high efficiency particulate air filter need detect, connect the generation aerosol in the filter upstream, connect the sampled upstream pipe at the sampled upstream interface, and connection is used for the photometer or the corpuscular counter (upstream and downstream also can adopt a corpuscular counter) of upstream and downstream sampling, open upstream and downstream thief hatch place airtight valve, open corpuscular counter and sample,, calculate the filter efficiency of high efficiency particulate air filter according to the particle percentage or the number of upstream and downstream.After on-the-spot detection finishes, close the sealed valve of aerosol inlet, upstream and downstream thief hatch, recover normal condition.
Claims (4)
1. scanning leak detection high efficiency exhaustion device, the casing exhaust outlet is provided with high efficiency particulate air filter, it is characterized in that, and described high efficiency particulate air filter connects the scanning leak detection device; The scanning leak detection device comprises scanning head, slide block, leading screw, shaft coupling, worm gear, worm screw, motor and travel switch, casing is fixed at the leading screw two ends, slide block is arranged on the leading screw, scanning head is fixed in slide block, and worm screw is connected with the leading screw of box house by shaft coupling, and motor, worm gear and worm screw are fixed on the casing outside, motor is connected with worm screw, travel switch and turbine are adjacent, and worm gear connects the switch contact, and switch contact touching travel switch is controlled the scanning head stroke.
2. scanning leak detection high efficiency exhaustion device according to claim 1 is characterized in that, the motion that described scanning head is made up of above-mentioned worm and gear combines with travel switch and carries out Stroke Control.
3. scanning leak detection high efficiency exhaustion device according to claim 1 is characterized in that, described scanning head is a tubular structure, and length is suitable with tested high efficiency particulate air filter length, and thief hatch is positioned on the sampling pipe, and isometric with sampling pipe, is shaped as slit-type.
4. according to the described scanning leak detection high efficiency exhaustion device of claim 3, it is characterized in that described scanning head is a stainless pipe, scanning head is communicated with two arms, and two arms connections converge to thief hatch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203127259U CN201669258U (en) | 2009-10-19 | 2009-10-19 | Scanning leak detection high-efficiency exhaust device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203127259U CN201669258U (en) | 2009-10-19 | 2009-10-19 | Scanning leak detection high-efficiency exhaust device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201669258U true CN201669258U (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203127259U Expired - Fee Related CN201669258U (en) | 2009-10-19 | 2009-10-19 | Scanning leak detection high-efficiency exhaust device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201669258U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962361A (en) * | 2014-05-05 | 2014-08-06 | 苏州市金燕净化设备工程有限公司 | Scanning leakage detection efficient negative-pressure exhaust hood |
| CN105043672A (en) * | 2015-07-14 | 2015-11-11 | 苏州英德尔室内空气技术有限公司 | High-efficiency filter PAO testing device |
| CN106890509A (en) * | 2017-04-24 | 2017-06-27 | 苏州英德尔室内空气技术有限公司 | A kind of air cleaner scanning leak detection device |
| CN110145823A (en) * | 2019-06-20 | 2019-08-20 | 青海省地方病预防控制所 | A kind of scan-type high-efficient purification return air gas collecting apparatus |
| CN112763390A (en) * | 2020-12-23 | 2021-05-07 | 重庆海润节能技术股份有限公司 | In-situ leakage detection mechanism for high-efficiency filter of biological safety air port |
-
2009
- 2009-10-19 CN CN2009203127259U patent/CN201669258U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962361A (en) * | 2014-05-05 | 2014-08-06 | 苏州市金燕净化设备工程有限公司 | Scanning leakage detection efficient negative-pressure exhaust hood |
| CN103962361B (en) * | 2014-05-05 | 2016-10-05 | 苏州市金燕净化设备工程有限公司 | Scanning leak detection high-efficiency negative-pressure exhaust hood |
| CN105043672A (en) * | 2015-07-14 | 2015-11-11 | 苏州英德尔室内空气技术有限公司 | High-efficiency filter PAO testing device |
| CN106890509A (en) * | 2017-04-24 | 2017-06-27 | 苏州英德尔室内空气技术有限公司 | A kind of air cleaner scanning leak detection device |
| CN110145823A (en) * | 2019-06-20 | 2019-08-20 | 青海省地方病预防控制所 | A kind of scan-type high-efficient purification return air gas collecting apparatus |
| CN110145823B (en) * | 2019-06-20 | 2024-04-09 | 青海省地方病预防控制所 | Scanning type efficient purifying return air gas collecting device |
| CN112763390A (en) * | 2020-12-23 | 2021-05-07 | 重庆海润节能技术股份有限公司 | In-situ leakage detection mechanism for high-efficiency filter of biological safety air port |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20121019 |