FIELD: construction.
SUBSTANCE: invention is intended for use in systems of premises ventilation, in particular for covers that require higher safety in case of sharp rise of air medium pressure. Protective ventilation air-tight valve comprises body. In body there are the following components available: rotary installed plate with lug, driving shaft and lever rigidly joined to driving shaft. Medium part of lever is hingedly connected to plate lug. Between lever and plate there is at least one spring and controller of spring compression installed serially. Electric motor is installed on body. Its shaft via reduction gear is connected to driving shaft of valve. The latter is connected via reduction gear pinion to detachable handle of manual rotation of driving shaft. Driving shaft is installed in body parallel to plate.
EFFECT: improved tightness and efficiency of valve operation, simplification of its design.
2 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SEALED VENTILATION VALVE | 2021 |
|
RU2753384C1 |
| AUTOMATIC VENTILATION VALVE | 2011 |
|
RU2473020C1 |
| PRESSURE TIGHT VENT | 2009 |
|
RU2413110C1 |
| VENTILATION AIR-TIGHT VALVE | 2008 |
|
RU2386876C2 |
| EXCESSIVE PRESSURE VALVE | 2008 |
|
RU2374543C1 |
| SAFETY AUTOMATIC VALVE | 2021 |
|
RU2753787C1 |
| BENCH TO TEST VENTILATION SYSTEM PROTECTION DEVICE | 2007 |
|
RU2353860C1 |
| SAFETY TIGHT DOOR | 2011 |
|
RU2474665C1 |
| PROTECTIVE-HERMETIC MANHOLE (VERSIONS) | 2008 |
|
RU2374395C1 |
| SURGE VALVE OF BLAST FURNACE | 0 |
|
SU956565A1 |
