CN102128484A - Liquid groove sealing structure of laminar flow hood - Google Patents
Liquid groove sealing structure of laminar flow hood Download PDFInfo
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- CN102128484A CN102128484A CN2010101001751A CN201010100175A CN102128484A CN 102128484 A CN102128484 A CN 102128484A CN 2010101001751 A CN2010101001751 A CN 2010101001751A CN 201010100175 A CN201010100175 A CN 201010100175A CN 102128484 A CN102128484 A CN 102128484A
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- laminar flow
- liquid bath
- flow hood
- main box
- additional casing
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Abstract
The invention discloses a liquid groove sealing structure of a laminar flow hood. The liquid groove sealing structure comprises a main box, a high-efficiency filter, a sealing cutter saddle and an auxiliary box, wherein the four sides of the high-efficiency filter are provided with liquid grooves; the sealing cutter saddle is positioned in the main box and is submerged into liquid of the liquid grooves; the upper end of the auxiliary box is fixedly connected with the lower end of the main box; the sealing cutter saddle is arranged on the inner side of the joint between the auxiliary box and the main box; the auxiliary box is provided with an installation bracket; the high-efficiency filter is positioned in the installation bracket; and the lower end of the auxiliary box is provided with an air outlet. The invention provides the liquid groove sealing structure of the laminar flow hood, which effectively eliminates the hidden danger in leakage of front side air supply and saves the cost.
Description
Technical field
The invention belongs to laminar flow hood liquid bath hermetically-sealed construction.
Background technology
Laminar flow hood is widely used in departments such as precision optical machinery, electronics, pharmacy, food, fine chemistry industry.It is a kind of air cleaning facility that local high clean environment is provided.It mainly forms (accompanying drawing) by casing, blower fan, air cleaner, damping layer, light fixture etc.Clean laminar flow hood be with air through blower fan with certain blast by behind the high efficiency particle air filter, all press by damping layer, be that pure air is perpendicular layers flow pattern air-flow and sends into the workspace, thereby guaranteed that the workspace reaches the required high-cleanness, high of technology.
The key of laminar flow hood is the sealing of high efficiency particulate air filter and casing.Especially guarantee to send into the pure air of workspace must be all through filtering efficiently, and do not have any leakage.The filter efficiency of high efficiency particulate air filter itself is generally detected by manufacturer, has the verification of conformity of filter when dispatching from the factory.Concerning enterprise, high efficiency particulate air filter leak detection is meant the scene leak detection after high efficiency particulate air filter and system thereof install, and mainly is to check that little pin hole in the filter filtration material and other damage, as the crack on frame seal, washer sealing and the filter frame etc.The purpose of leak detection be by check high efficiency particulate air filter and with the sealing that installation frame connecting portion etc. is located, in time find high efficiency particulate air filter itself and install in the defective that exists, take its corresponding measures, guarantee regional cleanliness factor.
The PAO method is adopted in the high efficiency particulate air filter leak detection, operation principle is: the PAO aerosol takes place as the dirt source at detected high efficiency particulate air filter weather side, sample with photometer at downwind side, dusty gas is converted to electric weight through the scattered light that photometer produces by photoelectric effect and linear the amplification, and is shown fast by microampere meter.The air sample that collects is by photometric diffuser casing, because the difference of particle diffusion causing intensity of light, and this luminous intensity after measured, photometer just can record aerocolloidal relative concentration.
Upper stream cover high efficiency particulate air filter general seal form in market is a washer sealing now, is called for short dry-type encapsulated (accompanying drawing 1).Because sealing plane and high efficiency particulate air filter are to seal by the screw rod packing washer, cause box deformation easily.Sealing plane is that a postwelding seals by fluid sealant with being connected of casing in addition, and the hidden danger of leakage is also arranged.The laminar flow hood of dry-type encapsulated form is difficult to send out dirt by PAO (aerosol) and detects.Afterwards, adopting the high efficiency particulate air filter (accompanying drawing 2) of liquid bath seal form, the sealing knife rest is installed on the laminar flow hood casing, is liquid bath on the filter, and knife rest immerses the liquid in the liquid bath like this.Because in the liquid bath is special liquid, can bear 3000Pa pressure.Thereby can avoid because the leakage that causes of installation deviation efficiently.After the use, laminar flow hood PAO (aerosol) sends out dirt detection qualification rate and improves greatly.But the liquid bath hermetically-sealed construction of this dry-type encapsulated structure tread flaking, though the leakage of efficient and sealing surface is under control, the sealing of knife rest and casing still has the possibility of leakage.
Summary of the invention
In order to overcome the high deficiency of leakage hidden danger, cost that there is the front air-supply in existing laminar flow hood liquid bath hermetically-sealed construction, the invention provides a kind of effective leakage hidden danger of positive air-supply, laminar flow hood liquid bath hermetically-sealed construction of saving cost eliminated.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of laminar flow hood liquid bath hermetically-sealed construction, comprise main box, high efficiency particulate air filter and sealing knife rest, four sides of described high efficiency particulate air filter are provided with liquid bath, described sealing knife rest is positioned at described main box, described sealing knife rest immerses in the liquid of described liquid bath, described laminar flow hood liquid bath hermetically-sealed construction also comprises additional casing, fixedly connected with the lower end of described main box in the upper end of described additional casing, at the described sealing knife rest of the junction installed inside of described additional casing and main box, described additional casing is provided with installation bracket, described high efficiency particulate air filter is positioned on the described installation bracket, and the lower end of described additional casing is provided with air outlet.
The upper end of described additional casing and the lower end of described main box are tightly connected.
Beneficial effect of the present invention mainly shows: 1, the positive air-supply of assurance side does not have leakage.2, can reduce the distortion that the welding of knife rest and casing causes.3, originally owing to will weld knife rest, in order to reduce distortion, must increase the wall thickness of casing, new structure can be saved cost of manufacture.4, this structure is suitable for the improvement of old dry type, liquid bath sealing, saves improvement cost.
Description of drawings
Fig. 1 is the schematic diagram of dry-type encapsulated structure.
Fig. 2 is the schematic diagram of existing liquid bath hermetically-sealed construction.
Fig. 3 is the schematic diagram of laminar flow hood liquid bath hermetically-sealed construction of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 3, a kind of laminar flow hood liquid bath hermetically-sealed construction, comprise main box 1, high efficiency particulate air filter 2 and sealing knife rest 3, four sides of described high efficiency particulate air filter 2 are provided with liquid bath 4, described sealing knife rest 3 is positioned at described main box 1, described sealing knife rest 3 immerses in the liquid of described liquid bath 4, described laminar flow hood liquid bath hermetically-sealed construction also comprises additional casing 5, fixedly connected with the lower end of described main box 1 in the upper end of described additional casing 5, the described sealing knife rest 3 of junction installed inside at described additional casing 5 and main box 1, described additional casing is provided with installation bracket 6, and described high efficiency particulate air filter 2 is positioned on the described installation bracket 6, and the lower end of described additional casing 5 is provided with air outlet.
The lower end of the upper end of described additional casing 5 and described main box 1 is tightly connected.
In the present embodiment,,, in the structure shown in Figure 3, the leakage that knife rest and being connected of casing are possible is guided into the side because the leakage of former liquid bath sealing knife rest and casing may influence the working region, downstream with respect to original structure shown in Figure 2.Be exactly knife rest and additional casing be two independently parts, connect together after completing, can effectively avoid the leakage hidden danger of positive air-supply, improve laminar flow hood PAO (aerosol) and send out dirt and detect qualification rate.
Claims (3)
1. laminar flow hood liquid bath hermetically-sealed construction, comprise main box, high efficiency particulate air filter and sealing knife rest, four sides of described high efficiency particulate air filter are provided with liquid bath, described sealing knife rest is positioned at described main box, described sealing knife rest immerses in the liquid of described liquid bath, it is characterized in that: described laminar flow hood liquid bath hermetically-sealed construction also comprises additional casing, fixedly connected with the lower end of described main box in the upper end of described additional casing, at the described sealing knife rest of the junction installed inside of described additional casing and main box, described additional casing is provided with installation bracket, described liquid bath is positioned on the described installation bracket, and the lower end of described additional casing is provided with air outlet.
2. laminar flow hood liquid bath hermetically-sealed construction as claimed in claim 1 is characterized in that: the upper end of described additional casing and the lower end of described main box are tightly connected.
3. laminar flow hood liquid bath hermetically-sealed construction as claimed in claim 1 or 2 is characterized in that: described installation bracket is installed in rotation on the additional casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010100175 CN102128484B (en) | 2010-01-19 | 2010-01-19 | Liquid groove sealing structure of laminar flow hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010100175 CN102128484B (en) | 2010-01-19 | 2010-01-19 | Liquid groove sealing structure of laminar flow hood |
Publications (2)
| Publication Number | Publication Date |
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| CN102128484A true CN102128484A (en) | 2011-07-20 |
| CN102128484B CN102128484B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010100175 Active CN102128484B (en) | 2010-01-19 | 2010-01-19 | Liquid groove sealing structure of laminar flow hood |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778422A (en) * | 2012-08-16 | 2012-11-14 | 苏州优加环境科技有限公司 | Air filter detection platform |
| CN103486710A (en) * | 2013-09-11 | 2014-01-01 | 无锡零界净化设备有限公司 | Mounting structure and method for flow-equalizing film in purification equipment |
| CN103486275A (en) * | 2013-09-11 | 2014-01-01 | 无锡零界净化设备有限公司 | Sealing structure for main isolator casing and purifying unit |
| CN103498937A (en) * | 2013-08-22 | 2014-01-08 | 苏州安科众达净化科技有限公司 | Laminar flow cover sealing structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244647Y (en) * | 1995-08-08 | 1997-01-08 | 天津市宇华净化设备厂 | Air filter |
| EP0798027A1 (en) * | 1996-03-26 | 1997-10-01 | Schako Metallwarenfabrik Ferdinand Schad KG | Seal arrangement for filter boxes |
| CN2443767Y (en) * | 2000-09-20 | 2001-08-22 | 汪维 | Fluid slotting sealed laminar flow casing |
| CN2729563Y (en) * | 2004-09-27 | 2005-09-28 | 德州亚太集团有限公司 | Laminar hood with liquid groove sealing |
| EP2149405A1 (en) * | 2008-07-28 | 2010-02-03 | FCR S.p.A. | Means for connecting the cover and the filter in a hood of an air conditioning plant for clean rooms |
| CN101837218A (en) * | 2004-06-08 | 2010-09-22 | 肯非法尔公司 | Filter housing assembly |
| CN201705930U (en) * | 2010-01-19 | 2011-01-12 | 正大青春宝药业有限公司 | Laminar flow cover liquid trough sealing structure |
-
2010
- 2010-01-19 CN CN 201010100175 patent/CN102128484B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244647Y (en) * | 1995-08-08 | 1997-01-08 | 天津市宇华净化设备厂 | Air filter |
| EP0798027A1 (en) * | 1996-03-26 | 1997-10-01 | Schako Metallwarenfabrik Ferdinand Schad KG | Seal arrangement for filter boxes |
| CN2443767Y (en) * | 2000-09-20 | 2001-08-22 | 汪维 | Fluid slotting sealed laminar flow casing |
| CN101837218A (en) * | 2004-06-08 | 2010-09-22 | 肯非法尔公司 | Filter housing assembly |
| CN2729563Y (en) * | 2004-09-27 | 2005-09-28 | 德州亚太集团有限公司 | Laminar hood with liquid groove sealing |
| EP2149405A1 (en) * | 2008-07-28 | 2010-02-03 | FCR S.p.A. | Means for connecting the cover and the filter in a hood of an air conditioning plant for clean rooms |
| CN201705930U (en) * | 2010-01-19 | 2011-01-12 | 正大青春宝药业有限公司 | Laminar flow cover liquid trough sealing structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778422A (en) * | 2012-08-16 | 2012-11-14 | 苏州优加环境科技有限公司 | Air filter detection platform |
| CN103498937A (en) * | 2013-08-22 | 2014-01-08 | 苏州安科众达净化科技有限公司 | Laminar flow cover sealing structure |
| CN103498937B (en) * | 2013-08-22 | 2015-12-23 | 苏州安科众达净化科技有限公司 | Laminar flow hood sealing configuration |
| CN103486710A (en) * | 2013-09-11 | 2014-01-01 | 无锡零界净化设备有限公司 | Mounting structure and method for flow-equalizing film in purification equipment |
| CN103486275A (en) * | 2013-09-11 | 2014-01-01 | 无锡零界净化设备有限公司 | Sealing structure for main isolator casing and purifying unit |
| CN103486710B (en) * | 2013-09-11 | 2015-12-02 | 无锡零界净化设备有限公司 | A kind of mounting structure of cleaning equipment current-sharing film and installation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102128484B (en) | 2013-04-10 |
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