CN201059358Y - Pressure differential type gas sealing valve - Google Patents
Pressure differential type gas sealing valve Download PDFInfo
- Publication number
- CN201059358Y CN201059358Y CNU200720154937XU CN200720154937U CN201059358Y CN 201059358 Y CN201059358 Y CN 201059358Y CN U200720154937X U CNU200720154937X U CN U200720154937XU CN 200720154937 U CN200720154937 U CN 200720154937U CN 201059358 Y CN201059358 Y CN 201059358Y
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- valve
- valve block
- main shaft
- countershaft
- stainless steel
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Abstract
The utility model provides a pressure gradient air seal valve for effectively cutting off the bacterium or virus airflow in the exhaust pipeline, comprising a valve body 1, stainless steel valve plates 5,6, a main shaft 2, auxiliary shafts 3,4, a lever connecting mechanism 11 and a central bleed air port 7, wherein, the valve plates 5,6 are connected with the front and the back ends of the valve body 1 through the auxiliary shafts 3,4 respectively; the main shaft 2 is arranged between the auxiliary shafts 3,4; the main shaft 2 is respectively connected with the valve plates 5,6 through the lever connecting mechanism 11 and the central bleed air port 7 is arranged between the valve plates 5,6; a main connecting lever 8 of the lever connecting mechanism is fixedly connected with the main shaft 2; the two ends of a flexible connecting lever 9 are respectively hinged with the main connecting lever 8 and the valve plate 6; the two ends of a flexible connecting lever 10 are respectively hinged with the main connecting lever 8 and the valve plate 5; the stainless steel round valve plate 6 comprises two pieces of stainless steel plates with a silicon rubber seal plate clipped in between. Bacteria or poisonous airflow in the exhaust pipeline can be absolutely effectively blocked and cut off by the utility model, therefore, the safety use of the biology laboratories, the animal experiment facilities and the high lethality bacteria isolation wards can be protected.
Description
Technical field
The utility model relates to gas sealing valve, especially a kind of can be effectively to poisonous in the ventilation duct or contain the differential gas sealing valve that the fatal infection air-flow carries out complete exclusion seal.
Background technique
In particular surroundingss such as biology laboratory, Laboratory Animal Facility and high mortality virus isolation ward, the threat that must leak in the face of the virus that factors such as high efficiency particulate air filter breakage in the exhaust system cause.Virus and the bacterium cultivating in the above-mentioned environment or grow are very big to the threat of human body and external environment condition, can't effectively cut off the associated conduit in the exhaust system in case take place to leak, the air-flow that is rich in malignant bacteria and virus will drain into the external world through exhaust system, produce to pollute also to cause great public health security accident.It is sealing medium that existing relevant airtight valve often adopts flexible materials such as rubber, though can guarantee the gas tightness under certain pressure intensity, but in use aging, mechanical wear, be mingled with factor such as impurity because of sealing medium, can't guarantee when taking place to leak, to cut off poisonous air-flow fully definitely effectively, guarantee that external environment is not contaminated.
Summary of the invention
The purpose of this utility model is, mechanical wear in use aging because of sealing medium at flexible material airtight valves such as existing rubber, be mingled with factor such as impurity; can't guarantee to cut off definitely effectively poisonous air-flow; guarantee the not contaminated problem of external environment; provide a kind of can in the air pipeline contain bacterium or poisonous air-flow carry out absolute reliable, effectively intercept and block protection biology laboratory, Laboratory Animal Facility and high mortality virus isolation ward differential gas sealing valve safe in utilization.
Differential gas sealing valve described in the utility model comprises valve body 1, valve block 5, valve block 6, main shaft 2, countershaft 3, countershaft 4, linkage mechanism 11, middle air entraining jet 7.Valve block 5, valve block 6 are loaded on the front end and back end of valve body 1 respectively vertically by countershaft 3, countershaft 4.Main shaft 2 is loaded between countershaft 3, the countershaft 4, and equidistant, parallel with countershaft 3, countershaft 4.Main shaft 2 is connected with valve block 5, valve block 6 respectively by linkage mechanism 11.On the valve body 1, air entraining jet 7 in the middle of being provided with between valve block 5, the valve block 6.
Linkage mechanism is made of master connecting rod 8, movable rod 9, movable rod 10.Master connecting rod 8 is connected with main shaft 2.One end of movable rod 9 and an end of master connecting rod 8 are hinged, and the other end and valve block 6 are hinged.One end of movable rod 10 and the other end of master connecting rod 8 are hinged, and the other end and valve block 5 are hinged.
The circular valve block 6 of stainless steel is that folder silicone rubber seal pad constitutes in two corrosion resistant plates.
The valve body that the utility model is made with withstand voltage, corrosion resistant high-quality stainless steel is as the pressure-bearing main body.The circular valve block of stainless steel is a folder silicone rubber seal pad in two corrosion resistant plates, can closely contact with the valve body inner tubal wall, can form effective positive-pressure closing space between the two.When being in opening state, two valve blocks are perpendicular to air intake surface, to guarantee that air-flow normally passes through; When the generation leakage need be closed, two valve block half-twists, be parallel to air intake surface, the folded silicone rubber seal pad of valve block compresses the valve body inner tubal wall, form a confined space between two valve blocks, the external portion of the clean malleation air-flow that introduce from the fresh wind tube road in bleed hole between two valve blocks forms a malleation space, contains the poisonous air-flow of bacterium thereby intercept to block.As aging because of silicone rubber seal pad in the using process, damaged or accompany impurity with valve body inner tubal wall surface of contact and cause leakage, also will be that clean positive pressure gas flow direction pollution pipeline leaks, contain the poisonous air-flow of bacterium and then can't leak to the external world, thereby effectively guarantee the reliability of its gas seal by the malleation space between two valve blocks.
The utility model can be effectively, reliably contain bacterium or poisonous air-flow in the air pipeline are carried out absolute effectively the obstruct and block, protection biology laboratory, Laboratory Animal Facility and high mortality virus isolation ward safe in utilization.
Description of drawings
Fig. 1 is the structure cutaway view of the differential gas sealing valve opening state of the utility model;
Fig. 2 is the structure cutaway view of the differential gas sealing valve closed condition of the utility model;
Fig. 3 is the structural drawing of valve block double-action mechanism before and after the differential gas sealing valve of the utility model.
Among the figure, air entraining jet 8 master connecting rods 9 movable rods 10 movable rods 11 linkage mechanisms in the middle of 1 valve body, 2 main shafts, 3 countershafts, 4 countershafts, 5 valve blocks, 6 valve blocks 7
Embodiment
The utility model is described in further detail below in conjunction with embodiment shown in the drawings:
As shown in Figure 1 and Figure 2, differential gas sealing valve described in the utility model comprises valve body 1, valve block 5, valve block 6, main shaft 2, countershaft 3, countershaft 4, linkage mechanism 11, middle air entraining jet 7.Valve block 5, valve block 6 are loaded on the front end and back end of valve body 1 respectively vertically by countershaft 3, countershaft 4.Main shaft 2 is loaded between countershaft 3, the countershaft 4, and equidistant, parallel with countershaft 3, countershaft 4.Main shaft 2 is connected with valve block 5, valve block 6 respectively by linkage mechanism 11.On the valve body 1, air entraining jet 7 in the middle of being provided with between valve block 5, the valve block 6.
The circular valve block 6 of stainless steel is that folder silicone rubber seal pad constitutes in two corrosion resistant plates.
As shown in Figure 3, linkage mechanism 11 is made of master connecting rod 8, movable rod 9, movable rod 10.Master connecting rod 8 is connected with main shaft 2.One end of movable rod 9 and an end of master connecting rod 8 are hinged, and the other end and valve block 6 are hinged.One end of movable rod 10 and the other end of master connecting rod 8 are hinged, and the other end and valve block 5 are hinged.
When exhaust duct leaks, the main shaft 2 external electric actuator of valve body 1 intermediate portion are rotated, by being fixed on master connecting rod 8 rotations on the main shaft 2, the movable rod 9,10 that drive links to each other with front and back two place's valve blocks is done and is synchronized with the movement, draw valve block 5,6 simultaneously, be the center, turn to air intake surface and be bordering on vertical place with countershaft 3,4 separately, guarantee that air-flow is normally discharged outdoor by valve in the pipeline.Middle air entraining jet 7 usefulness flexible pipes are connected to the fresh wind tube road, and the malleation clean gas flow of introducing is discharged with air-flow in the pipeline.The efficient effect device of crossing in exhaust system inner filtration device is because of breakage or other factors, when causing indoor fatal germ or virus to be leaked, detect warning by special-purpose leakage detection apparatus, and send instruction by the automatic control circuit in the system, valve body 1 external electric actuator is carried out shutdown command, drive main shaft 2 rotations, draw valve block 5,6 simultaneously, turn to and the air intake surface parastate with countershaft 3,4 separately, the silicone rubber seal pad of dependence valve block periphery presses valve body 1 inner tubal wall and carries out physical seal, and forms confined space between two valve blocks.The malleation clean gas flow that introduce from fresh wind tube road in by air entraining jet 7 this moment, in this confined space, will form malleation space with respect to the external world, its internal pressure is with respect to valve block 5,6 pressure differences with the external space are generally the malleation of 500Pa, as aging in the using process because of the silicone rubber seal pad, damaged or accompany impurity with valve body inner tubal wall surface of contact and cause a fixed gap, according to the pressure reduction principle, only may be by inner clean gas flow to external leakage, and can't leak to the external world by this confined space with the air-flow that contains bacterium or virus in the pipeline of the indoor side that links to each other, thereby guaranteed that good gas barrier blocks effect, guaranteed that extraneous space can be because of biology laboratory, Laboratory Animal Facility and high mortality virus isolation ward take place to leak and are polluted.The exhaust system control circuit is art designs routinely.
Claims (4)
1. a differential gas sealing valve is characterized in that: comprise valve body (1), valve block (5), valve block (6), main shaft (2), countershaft (3), countershaft (4), linkage mechanism (11), middle air entraining jet (7); Valve block (5), valve block (6) are loaded on the front end and back end of valve body (1) respectively vertically by countershaft (3), countershaft (4); Main shaft (2) is loaded between countershaft (3), the countershaft (4), and equidistant, parallel with countershaft (3), countershaft (4); Main shaft (2) is connected with valve block (5), valve block (6) respectively by linkage mechanism (11); On the valve body (1), air entraining jet (7) in the middle of being provided with between valve block (5), the valve block (6).
2. by the described differential gas sealing valve of claim 1, it is characterized in that: valve body (1) is the stainless steel circular valve, and valve block (5), valve block (6) are the circular valve block of stainless steel.
3. by the described differential gas sealing valve of claim 1, it is characterized in that: linkage mechanism is made of master connecting rod (8), movable rod (9), movable rod (10); Master connecting rod (8) is connected with main shaft (2); One end of one end of movable rod (9) and master connecting rod (8) is hinged, and the other end and valve block (6) are hinged; The other end of one end of movable rod (10) and master connecting rod (8) is hinged, and the other end and valve block (5) are hinged.
4. by the described differential gas sealing valve of claim 2, it is characterized in that: the circular valve block of stainless steel (6) is that folder silicone rubber seal pad constitutes in two corrosion resistant plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720154937XU CN201059358Y (en) | 2007-07-19 | 2007-07-19 | Pressure differential type gas sealing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720154937XU CN201059358Y (en) | 2007-07-19 | 2007-07-19 | Pressure differential type gas sealing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201059358Y true CN201059358Y (en) | 2008-05-14 |
Family
ID=39407828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720154937XU Expired - Lifetime CN201059358Y (en) | 2007-07-19 | 2007-07-19 | Pressure differential type gas sealing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201059358Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344096A (en) * | 2018-02-13 | 2018-07-31 | 重庆大学 | A kind of building ventilation structure |
| CN111365471A (en) * | 2020-03-14 | 2020-07-03 | 邵玉刚 | Gate valve |
-
2007
- 2007-07-19 CN CNU200720154937XU patent/CN201059358Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344096A (en) * | 2018-02-13 | 2018-07-31 | 重庆大学 | A kind of building ventilation structure |
| CN108344096B (en) * | 2018-02-13 | 2020-04-24 | 重庆大学 | Building ventilation structure |
| CN111365471A (en) * | 2020-03-14 | 2020-07-03 | 邵玉刚 | Gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Hu Guorong Document name: Notification of Termination of Patent Right |
|
| DD01 | Delivery of document by public notice |
Addressee: Hu Guorong Document name: Notification of Decision on Request for Restoration of Right |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080514 |
|
| CX01 | Expiry of patent term |