CN101618388A - Negative-pressure working platform - Google Patents
Negative-pressure working platform Download PDFInfo
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- CN101618388A CN101618388A CN200810126498A CN200810126498A CN101618388A CN 101618388 A CN101618388 A CN 101618388A CN 200810126498 A CN200810126498 A CN 200810126498A CN 200810126498 A CN200810126498 A CN 200810126498A CN 101618388 A CN101618388 A CN 101618388A
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- cabinet
- air
- negative
- working platform
- pressure working
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Abstract
The invention relates to a negative-pressure working platform. In the invention, air blowing is carried out from top to bottom on the front side face of a square cabinet body in an open shape, and air suction is carried out on a relative position of a bottom cabinet to form an obstruction air curtain so as to obstruct the escape of gas in the cabinet body; a movable air valve comprises an air box and an air valve provided with an interlayer, and the gas is fed from the top end of the air box and is sucked and discharged by a lower suction groove of the bottom cabinet through the interlayer of the air valve to form the obstruction air curtain; the lower suction groove of the bottom cabinet extends backwards and horizontally at the bottom of an air suction groove opening, forms a flat funnel-shaped groove body and then is matched with a connecting pipe by an adapter head to discharge the gas; in addition, the width of an operation window is smaller than that of the air valve structure and that of the lower suction groove, and the obstruction width of the air curtain effectively obstructs the width of the entire operation window; and the top end of the cabinet body is provided with an air replenishing stabilizing device, the top end of the back side of the air replenishing stabilizing device is provided with a slot, an air blower is arranged in the slot, the bottom is provided with a ventilation plate and a filter material, the gas is stably and smoothly supplied into an experiment containing chamber of the cabinet body, and the experiment quality can be raised.
Description
Technical field
The present invention refers to especially that relevant for a kind of exhaust equipment a kind of gas curtain that utilizes movable valve to form can effectively intercept the negative-pressure working platform that gas escapes in the cabinet.
Background technology
Sincerely please cooperate and consult the cabinet of prior art negative-pressure working platform shown in Fig. 1,2,3 10A and be the square cabinet shape shape, the leading flank Lower Half is empty operation window, top end face is provided with the smoke exhaust pipe 12A that connects exhaust equipment, the internal fixation of trailing flank and top end face has deflector 14A, and the bottom is provided with the base cabinet 11A of tool door-plate; Enter the saturating empty operation window place of cabinet 10A leading flank Lower Half and be provided with the transparent material adjustment doors 13A that can open up and down or close; And the height setting exhaust equipment variable speed driver or the frequency converter speed of borrowing this adjustment doors 13A opening travel reach air current of smoke removal stability.
But look into, the reflux bulb of the adjustment doors 13A opening part door of cabinet 10A and the issuable separated boundary layer of both sides side column, operating personnel front, the recirculating zone at adjustment doors 13A rear or the like all are the main causes that cause cabinet 10A internal contamination thing to leak.Because the intensity of these fluidic structures, turbulent diffusion, and the backflow size be not to reduce along with pumping velocity, even therefore increase rate of air sucked in required, also can't avoid the leakage of harmful substance in the cabinet 10A.
Summary of the invention
Main purpose of the present invention is to be to provide a kind of negative-pressure working platform, it is by bellows and the movable air valve structure of valve composition, make bellows can be fixed in the cabinet open sides first half, valve with interlayer then collapses in bellows inside and is moving type, and on the bellows top direct fixing pressure fan, and fix two relative valves with symmetrical side plate and form interlayers, make pressure fan directly be blown into gas, and follow the interlayer of bellows guiding through between two valves and blow out the formation gas curtain by the bellows top.
Of the present invention time a purpose is to provide a kind of negative-pressure working platform, and it has been a fixing tightwire since fixedly the valve biside plate outwards convexes with lug respectively, and cooperates assembly pulley to connect the device that heavily hangs down, and makes the operation up and down of movable valve lighter and handier smooth and easy.
Another object of the present invention still is to provide a kind of negative-pressure working platform, its be by will descend bothrium self-priming air drain mouth bottom backward horizontal-extending be flat groove body, and cooperate adapter to engage the technological means of tube connector exhaust, reach the base cabinet space and fully use operation ease.
Another object of the present invention still is to provide a kind of negative-pressure working platform, and it is to reach the technological means of bothrium width down by the operation window width less than the air valve structure width, reaches cabinet experiment room gas inside and does not leak.
Of the present inventionly advance a purpose and still be to provide a kind of negative-pressure working platform, it is by being provided with the tonifying Qi stabilising arrangement on the cabinet top, and this tonifying Qi stabilising arrangement is to offer a short slot on the rear side top, in this short slot, pressure fan is set, and the technological means of air permeable plate and filter material is set in the bottom, reach and filter and voltage stabilizing rectification usefulness, can promote the experiment quality.
The invention provides a kind of negative-pressure working platform, be provided with at the leading flank of the open shape of this negative-pressure working platform and blow from top to bottom, and intercept gas curtain, intercept the movable valve that gas escapes in the cabinet in the air-breathing formation of base cabinet opposite position; This activity valve mainly is made up of rectangle bellows and valve with interlayer, and the rectangle bellows on the top directly or borrow fixation kit that pressure fan is set to be fixed in the cabinet open sides first half, valve is fixed two transparent valves by the two opposite sides plate and is formed interlayer in the middle of making and collapse in bellows inside, this valve is the moving type down-drawable and closes cabinet open sides Lower Half, establishes the base cabinet with handle in the exhaust gas cabinet bottom in addition.
Other provides a kind of negative-pressure working platform, the following bothrium of this negative-pressure working platform base cabinet in air-breathing notch bottom backward horizontal-extending be flat funnel-form groove body.
Other provides a kind of negative-pressure working platform, and bothrium width or following bothrium width were greater than air valve structure width and operation window width under this negative-pressure working platform operation window width reached less than the air valve structure width.
A kind of negative-pressure working platform also is provided, this negative-pressure working platform top is provided with the tonifying Qi stabilising arrangement, and the inner setting of this tonifying Qi stabilising arrangement has several deflectors of several guide holes or guide plate, and offers a short slot on the rear side top, in this short slot, pressure fan is set, and air permeable plate and filter material is set in the bottom.
Another kind of negative-pressure working platform is provided again again, and this negative-pressure working platform top is provided with offers the rectangle framework rectification Turbogrid plates that several run through through hole.
Beneficial effect of the present invention is: make pressure fan directly be blown into gas by the bellows top, and follow the gas curtain that the interlayer of bellows guiding through between two valves blows out the formation of formation gas curtain utilization activity valve.Also can make the operation up and down of movable valve lighter and handier smooth and easy; In addition by will descend bothrium self-priming air drain mouth bottom backward horizontal-extending be flat groove body, and cooperate adapter to engage the technological means of tube connector exhaust, reach the base cabinet space and fully use operation ease; Reach the technological means of bothrium width down by the operation window width less than the air valve structure width, reach negative-pressure working platform experiment room gas inside and do not leak; By being provided with the tonifying Qi stabilising arrangement on the cabinet top, and this tonifying Qi stabilising arrangement is to offer a short slot on the rear side top, in this short slot pressure fan is set, and the technological means of air permeable plate and filter material is set in the bottom, reach and filter and voltage stabilizing rectification usefulness, can promote the experiment quality.
Description of drawings
Fig. 1: be prior art negative-pressure working platform stereo appearance figure of the present invention.
Fig. 2: be front view of the present invention.
Fig. 3: be side-looking generalized section of the present invention.
Fig. 4: be stereo appearance figure of the present invention.
Fig. 5: be front view of the present invention.
Fig. 6: be side-looking generalized section of the present invention.
Fig. 7: the three-dimensional exploded view that is activity valve of the present invention.
Fig. 8: the stereo-motion schematic diagram when being activity valve opening of the present invention.
Fig. 9: the stereo-motion schematic diagram when being activity valve-closing of the present invention.
Figure 10: the generalized section when being activity valve-closing of the present invention.
Figure 11: the generalized section when being activity valve opening of the present invention.
Figure 12: the three-dimensional exploded view that is bothrium under the present invention.
Figure 13: the stereogram that is bothrium under the present invention.
Figure 14: the profile that is bothrium under the present invention.
Figure 15: be the front-view schematic diagram of the movable valve of prior art cabinet when the next.
Figure 16: be the front-view schematic diagram of the movable valve of prior art cabinet when upper.
Figure 17: be prior art cabinet transverse cross-sectional view.
Figure 18: be cabinet transverse cross-sectional view of the present invention ().
Figure 19: be cabinet transverse cross-sectional view of the present invention (two).
Figure 20: be cabinet transverse cross-sectional view of the present invention (three).
Figure 21: be the front-view schematic diagram of the movable valve of cabinet of the present invention when upper.
Figure 22: the stereo appearance figure that is tonifying Qi stabilising arrangement of the present invention.
Figure 23: the three-dimensional exploded view that is tonifying Qi stabilising arrangement of the present invention.
Figure 24: the side-looking generalized section that is tonifying Qi stabilising arrangement of the present invention.
Figure 25: another embodiment side-looking generalized section that is tonifying Qi stabilising arrangement of the present invention.
Figure 26: the rectification Turbogrid plates stereo appearance figure that is tonifying Qi stabilising arrangement of the present invention.
Figure 27: the stereo appearance figure that is another embodiment of the present invention.
[primary clustering symbol description]
(the present invention)
10A: cabinet 11A: base cabinet 12A: smoke exhaust pipe
14A: deflector 13A: adjustment doors
10: cabinet 11: base cabinet 12: the experiment room
14: guidance panel 15: operation window 20: air valve structure
21: pressure fan 22: bellows 23: valve
24: side plate 25: base cabinet 30: following bothrium
31: air-breathing notch 32: groove body 33: adapter
34: tube connector 50: the tonifying Qi stabilising arrangement
51: pressure fan 52: short slot 53: deflector
54: guide hole 55: air permeable plate 56: filter material
60: Turbogrid plates 61: through hole 80: cabinet
81: base cabinet 82: experiment room 83: screens
84: guidance panel 85: operation window 90: following bothrium
91: air-breathing notch 92: groove body 93: adapter
94: tube connector 100: internal partition 110: air-breathing groove
220: projection 230: gap 240: lug
241: cable wire 242: heavily hang down 243: pulley
340: tube connector 500: pressure stabilizing chamber 800: air valve structure
L1: air valve structure 20 width L2: operation window 15 width
L3: following bothrium 30 width
The specific embodiment
Remainder, enumerate specific embodiment and cooperate graphic detailed description with regard to content of the present invention as back:
Please cooperate and consult shown in Fig. 4,5,6, the cabinet 10 of negative-pressure working platform of the present invention is to be the square cabinet shape shape, the leading flank Lower Half is empty operation window 15, first half fitting operation panel 14, top end face is provided with the experiment room 12 that the tonifying Qi stabilising arrangement 50 with make-up gas and rectification usefulness forms cabinet 10 inside, the bottom then is provided with the base cabinet 11 of tool door-plate, enters saturating empty operation window 15 places of cabinet 10 leading flanks and is provided with the transparent material air valve structure 20 that can open up and down or close.
Continuous air valve structure 20 of the present invention mainly is made up of bellows 22 and valve 23 as shown in Figure 7, and bellows 22 are the frameworks that are rectangle; Valve 23 is made up of two symmetrical tabular clear glasses, and its dual-side is fixed with relative side plate 24, forms parallel sandwich-like, and the bottom then fixedly has the base cabinet 25 of handle; Entering bellows 22 tops can be directly (or can by fixation kit) fixes several cross-flow type pressure fans 21, so when bellows 22 were fixed in cabinet 10, the valve 23 that fixedly be by side plate 24 to have interlayer was that integral body is embedded in bellows 22 inside.
For another example shown in Fig. 8,9, when valve 23 integral body of air valve structure 20 are embedded in bellows 22 inside, side plate 24 bottoms outwards convex with lug 240, and divide and to cooperate pulley 243 devices that are fixed in cabinet 10 appropriate locations to connect heavily by cable wire 241 respectively to hang down 242, and make heavily to hang down and 242 be hidden in cabinet 10 left sides or right side or the rear side interlayer.
Bellows 22 are to be fixed in cabinet 10, and valve 23 can be operated up and down and stretch in bellows 22, reach operation window 15 and open or closing function; And in operating process, valve 23 overall weight are offset by heavily vertical 242 balances, so can reach light and handy convenient handling.
Again, when this air valve structure 20 was fixedly mounted on cabinet 10, both sides can be guided the motion of valve 23 by guide rails, and outwards were convexly equipped with projection 220 qualification guiding cable wires 241 on top, bellows 22 both sides.
According to last, as shown in figure 10, (when the downward shutoff operation window 15 of the valve 23 of air valve structure 20) cross-flow type pressure fan 21 is blown into air in the bellows 22 by bellows 22 tops, air-flow forms rectification usefulness in bellows 22, and then the past current downflow of the interlayer that follows valve 23, and directly be subjected to the air-breathing relatively groove 110 of base cabinet 11 to attract to extract out through extractor fan, form and intercept gas curtain.In addition, allow little gap 230 between valve 23 and the bellows 22, cause is at valve 23 tops and bellows 22 bottom overlappings, this gap 230 is little far beyond valve 23 interlayers, air-flow produces sinuous flow and forms pressure rising, resistance increase (shown in the direction of arrow among the figure), forms pressure differential, makes this gap 230 form windage usefulness naturally, gas is not leaked, import valve 23 interlayers naturally.And because of the guiding rectified action of air-flow through bellows 22 or valve 23 interlayers, even when valve 23 is opened (as shown in figure 11), air-flow still down blows, and is subjected to the attraction of air-breathing groove 110 and forms the air-flow heavy curtain, to reach intended purposes.
Again, see also shown in Figure 12,13,14, following bothrium 30 be upwards hold up the air-breathing notch of upright long groove shape 31 bottoms backward horizontal-extending be flat groove body 32, and this flat groove body 32 is to be funnel-form, and then cooperates adapter 33 to engage tube connectors 34.(as shown in Figure 6) down bothrium 30 be arranged at base cabinet 11 leading flanks and cabinet 10 leading flank air valve structures 20 symmetrical, the right air-breathing notch of long groove shape 31 bottoms by base cabinet 11 leading flanks backward horizontal-extending be flat groove body 32, and then cooperate adapter 33 joint tube connectors 34 that gas is discharged, so promptly do not stop base cabinet 11 leading flanks, and base cabinet 11 inner spaces are increased, to reach intended purposes.
As Figure 15,16, the cabinet of prior art shown in 17 10 structures are that operation window 15 width L2 quite reach bothrium 30 width L3 down at air valve structure 20 width L1, and being integral body, the air valve structure 20 of cabinet 10 front sides intercepts in operation window 15, therefore air valve structure 20 is when operating up and down, when air valve structure 20 is positioned at (as shown in figure 16) when upper, its formed obstruct gas curtain height is bigger, then its two side ends will cause the gap at two side bottoms because of the flow-disturbing that resistance produced near cabinet 10 operation window 15 side edge, make cabinet 10 experiment rooms 12 gas inside leak i.e. its obstruct width and effectively blocked operation window 15 whole width.In addition be positioned at (as shown in figure 15) when the next when air valve structure 20, though its formed obstruct gas curtain height is smaller, its two side ends still leaks because of flow-disturbing that resistance produced makes cabinet 10 test rooms 12 gas inside.So as shown in figure 18, interior plate 100 both sides of cabinet 10 inside toward interior move to be provided with constitute experiment room 12 (also directly the width of operation window 15 reduce and move interior plate 100 not), and make operation window 15 width L2 reach less than air valve structure 20 width L1 under bothrium 30 width L3.Then as shown in figure 21, when even air valve structure 20 is positioned at upper, then its two side bottom gap of being caused has been subjected to interior plate 100 to be isolated from the outside, that is to say outside operation window 15 width L2, effectively intercept whole operation window 15 width L2 and make gas curtain intercept width, guarantee that cabinet 10 experiment rooms 12 gas inside do not leak, to reach intended purposes.
Again as shown in figure 19, the following bothrium 30 width L3 of cabinet 10 base cabinets 11 are widened, and make down bothrium 30 width L3 greater than air valve structure 20 width L1 and operation window 15 width L2.As shown in figure 20, room 12 is tested toward the interior mobile formation that is provided with in interior plate 100 both sides of cabinet 10 inside, and make operation window 15 width L2 less than air valve structure 20 width L1; And bothrium 30 width L3 are widened, and make down bothrium 30 width L3 greater than air valve structure 20 width L1 and operation window 15 width L2, intercept the effective blocked operation window 15 whole width (as shown in figure 21) of width and reach gas curtain, guarantee that cabinet 10 experiment rooms 12 gas inside do not leak.
Advance shown in Figure 22,23, tonifying Qi stabilising arrangement 50 is the frameworks that are rectangle, and a short slot 52 is offered on the rear side top, in this short slot 52 axial fan 51 is set, and air permeable plate 55 and filter material 56 are set in the bottom, make air permeable plate 55 and filter material 56 gaps form pressure stabilizing chamber 500.Axial fan 51 is sent gas into tonifying Qi stabilising arrangement 50 inside, because of being subjected to the effect of air permeable plate 55, producing for the first time and filters and voltage stabilizing rectification usefulness; And when gas enter 56 of air permeable plate 55 and filter materials when forming pressure stabilizing chamber 500, produce for the second time and filter and voltage stabilizing rectification usefulness.And when air valve structure 20 is opened, tonifying Qi stabilising arrangement 50 can be stablized gas smooth and easy infeeding in the cabinet 10 experiment rooms 12, test the gas that bothrium 30 is drawn through tube connector 34 discharges under the quilt in the room 12 so as to replenishing, reach expection filtration and voltage stabilizing rectification usefulness, can promote the experiment quality.Shown in Figure 24,25, can be that tonifying Qi stabilising arrangement 50 inside are provided with several deflectors 53, so as to promoting airflow stability; Advance to such an extent that on these deflectors 53, guide hole 54 or guide plate are set, filter and voltage stabilizing rectification usefulness, can promote the experiment quality to reach expection.
Advance shown in Figure 26,27, the rectification Turbogrid plates 60 of the framework that is rectangle can be set on cabinet 10 tops, and the offering several and run through through hole 61 of rule.Edge is, when air valve structure 20 was opened, the rule through hole 61 of rectification Turbogrid plates 60 can supplied gas be stablized smooth and easy infeeding in the cabinet 10 experiment rooms 12, drew the gas of discharging through tube connector 34 so as to replenishing in the experiment room 12 by bothrium 30 down, reach expection voltage stabilizing rectification usefulness, can promote the experiment quality.And tube connector 340 extended toward tops to connect exhaust equipment.
Only the above person only is preferred embodiment of the present invention, when not limiting the scope of the present invention with this; So, allly change and modify according to the present patent application claim and the simple equivalent done of creation description, all should still belong in the scope that patent of the present invention contains.
Claims (6)
1, a kind of negative-pressure working platform is characterized in that: be provided with at the leading flank of the open shape of this negative-pressure working platform and blow from top to bottom, and intercept gas curtain to intercept the movable valve that gas escapes in the cabinet in the air-breathing formation of base cabinet opposite position; This activity valve mainly is made up of rectangle bellows and valve with interlayer, and the rectangle bellows on the top directly or borrow fixation kit that pressure fan is set to be fixed in the cabinet open sides first half, valve is fixed two transparent valves by the two opposite sides plate and is formed interlayer in the middle of making and collapse in bellows inside, this valve is the moving type down-drawable and closes this negative-pressure working platform cabinet open sides Lower Half, establishes the base cabinet with handle in the exhaust gas cabinet bottom in addition.
2, a kind of negative-pressure working platform as claimed in claim 1; It is characterized in that: the relative side plate of this valve outwards convexes with respectively in the bottom and is used for fixing cable wire and cooperates pulley gear to connect the lug that heavily hangs down, and between this valve and pulley, outwards convexes with the projection that limits cable wire respectively in top, bellows both sides in addition.
3, a kind of negative-pressure working platform is characterized in that: be provided with at the leading flank of the open shape of this negative-pressure working platform and blow from top to bottom, and intercept gas curtain to intercept the movable valve that gas escapes in the cabinet in the air-breathing formation of base cabinet opposite position; The following bothrium of this cabinet base cabinet in air-breathing notch bottom backward horizontal-extending be flat funnel-form groove body.
4, a kind of negative-pressure working platform is characterized in that: be provided with at the leading flank of the open shape of this negative-pressure working platform and blow from top to bottom, and intercept gas curtain to intercept the movable valve that gas escapes in the cabinet in the air-breathing formation of base cabinet opposite position; Wherein: bothrium width or following bothrium width were greater than air valve structure width and operation window width under this cabinet operation window width reached less than the air valve structure width.
5, a kind of negative-pressure working platform is characterized in that: be provided with at the leading flank of the open shape of this negative-pressure working platform and blow from top to bottom, and intercept gas curtain to intercept the movable valve that gas escapes in the cabinet in the air-breathing formation of base cabinet opposite position; Wherein: this cabinet top is provided with the tonifying Qi stabilising arrangement, and the inner setting of this tonifying Qi stabilising arrangement has several deflectors of several guide holes or guide plate, and offers a short slot on the rear side top, pressure fan is set in this short slot, and in the bottom air permeable plate and filter material is set.
6, a kind of negative-pressure working platform is characterized in that: be provided with at the leading flank of the open shape of this negative-pressure working platform and blow from top to bottom, and intercept gas curtain to intercept the movable valve that gas escapes in the cabinet in the air-breathing formation of base cabinet opposite position; Wherein: this cabinet top is provided with offers the rectangle framework rectification Turbogrid plates that several run through through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810126498A CN101618388A (en) | 2008-07-04 | 2008-07-04 | Negative-pressure working platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810126498A CN101618388A (en) | 2008-07-04 | 2008-07-04 | Negative-pressure working platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101618388A true CN101618388A (en) | 2010-01-06 |
Family
ID=41511892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810126498A Pending CN101618388A (en) | 2008-07-04 | 2008-07-04 | Negative-pressure working platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101618388A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338726A (en) * | 2013-07-31 | 2015-02-11 | 株式会社安川电机 | Work cabinet and sheet |
| TWI483769B (en) * | 2013-09-25 | 2015-05-11 | ||
| CN112296054A (en) * | 2020-11-18 | 2021-02-02 | 杭州杰尼实验设备有限公司 | Fume chamber is used in laboratory convenient to use |
-
2008
- 2008-07-04 CN CN200810126498A patent/CN101618388A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338726A (en) * | 2013-07-31 | 2015-02-11 | 株式会社安川电机 | Work cabinet and sheet |
| TWI483769B (en) * | 2013-09-25 | 2015-05-11 | ||
| CN112296054A (en) * | 2020-11-18 | 2021-02-02 | 杭州杰尼实验设备有限公司 | Fume chamber is used in laboratory convenient to use |
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| PB01 | Publication | ||
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Application publication date: 20100106 |