The valve of the ventilation system and the actuator rotation axis of the valve

 

(57) Abstract:

The invention relates to the field of ventilation. The valve includes a housing placed in it a valve that is installed on the axis can be rotated, is made with an installed around the perimeter strip of thermal expanding material, the actuator rotation axis of the damper and a flexible sealing element is designed in the form of a tape of thermal expanding material. The actuator rotation axis of the damper contains related with the axis of the return spring and locking mechanism. Spring covers the axis of the valve. The locking mechanism is associated with the spring means fixed on her arm, and the actuator is equipped with a latch, and an additional lever fixed at one end on the spring with the lever, and the other associated with lock, made of heat-sensitive material and designed to deform or fracture when the temperature is above the preset level. The technical result is the ability to seal the gap between the casing and the valve in the melting and sintering of the strip and a flexible sealing element. 2 C. and 7 C.p. f-crystals, 4 Il.

The invention relates to the field of ventilation and can be used to overlap ventilatsioonide body placed in it a valve, fixed on the axis can be rotated, is made with an installed around the perimeter strip of thermal expanding material, a flexible sealing element and the drive of the rotation damper (EP 512414 A2, 11.11.92).

A disadvantage of the known valve is insufficient sealing of the ventilation openings in the smoke room.

The technical result of the proposal is the possibility of sealing the gap between the casing and the valve when spraying and sintering strip and a flexible sealing element, made of thermal expanding material, when the temperature of the air above the target.

Known to drive rotation of the valve with the associated with the axis of the return spring and locking mechanism (SU 1836596 A3, 23.08.93).

The disadvantage of this drive is the lack of response of the actuator rotation axis of the damper to change the temperature of the room.

The technical result from the application of the proposed drive is the ability to rotate the valve to cut off the ventilation opening when the temperature of the air above the target.

The technical result is achieved by the fact that p is plant on the axis can be rotated, made with an installed around the perimeter strip of thermal expanding material, a flexible sealing element and the actuator rotation axis of the damper, while the flexible sealing element is designed in the form of strips of sealing material.

The belt is mounted on the periphery of the valve with a size larger than the size of the gap between the flap and the inner surface of the housing.

Tape sealing element is mounted on the housing and/or on the flap.

The valve is provided with an additional sealing element, made in the form of a tape, similar to the primary, while the tape is installed on the periphery of the flap and the body, with the possibility of their mutual overlap.

The valve body is made with a tapering reduced cross-section, which houses the flap.

The actuator rotation axis of the damper contains related awn rotation return spring and locking mechanism, the spring encompasses the axis of the valve, and the locking mechanism is associated with the spring means fixed on her arm, and the actuator is equipped with a latch, and an additional lever fixed at one end on the spring with the lever, and the other associated with lock, made of those is more defined.

The latch consists of two elements connected by a hot-melt material.

The latch elements made in the form of plates.

Spring one end of which is connected to the main lever and the other with an additional lever.

In Fig. 1 shows the valve in the closed position of the valve. In Fig. 2 - valve in the open position of the valve. In Fig. 3 shows the actuator rotation axis of the damper. In Fig. 4 - wheel drive, top view.

The valve includes a housing 1 made of galvanized steel sheet, the actuator 2 rotate the valve 3, is placed on the axis 4, the gasket 5 of thermal expanding material on the flap 3, the flexible sealing element 6 of thermal expanding material. The flap 3 is provided with a lining 7 of galvanized sheet. In the housing 1 is made profile 8. Axis 4 is placed in the bearing 9.

The drive axis of the valve contains a return spring 10 that is associated with the axis 19, and the locking mechanism of the valve 3, is made in the form of the main lever 11 connected with one end of the spring 10, the additional lever 12 connected with the spring 10 and the latch 13, made of a thermosensitive material and designed to deform or fracture when exceeding the temperature of the ways retainer can be made in the form of plates 14 and 15. The actuator includes an electromagnet 16, the limit switch 17, the arm 18, the stop 20.

The valve works in the following way. In suspended position the valve is open. Axis 4 of the valve is rigidly connected to the axis 19 of the drive. The spring 10 is twisted 90oproviding rotational torque to close the valve. The axis 19 of the actuator is held from rotation of the main lever 11, which is based in the rod of the electromagnet 16. When power is supplied, the axis 19 of the actuator is withdrawn from engagement with the rod of the electromagnet 16 and under the action of the spring rotates the valve to the closed position. Stop valve 3 in the closed position is when the lever 11 until it touches the stop 20.

In the absence of power valve is triggered automatically when the air temperature 72oC inside the housing 1. The latch 13, consisting of plates 14 and 15 connected by fusible material and rashidinia at a temperature of 72oC, frees up additional lever 12 from the housing. Under the action of the spring 10 the lever by turning the rocker arm 18 outputs the rod of the electromagnet 16 out of engagement with the main lever 11, after which the rotation of the valve 3 and its fixation in the closed position.

Rasmakany zevah switches 17 of the lever 11. The valve is opened manually by turning clockwise 90oremovable handle with raspikirovki the flap.

Around the perimeter of the valve set gasket 5, boiling at a temperature of 270oC and sealing the gap between the housing 1 and the closed valve. The projection strips of the same material prevents penetration of gases when the valve until the beginning of the expansion process.

A flexible sealing element 6 is made in the form of a tape reaches of material boiling at a temperature of 270oC as well as the gasket 5.

The tape can be installed on the periphery of the valve with a size larger than the size of the gap between the flap 3 and the inner surface of the housing 1.

Tape can be fixed to the body and/or on the flap.

The valve can be equipped with an additional sealing element, made in the form of a tape. These tapes can be installed on the periphery of the flap and the body, with the possibility of their mutual overlap. When the temperature rises above a given swelling occurs tapes and the formation of an air tight seal preventing the passage of smoke and fire.

Ket to eliminate the possibility of a touch flap with the walls of the duct during installation.

Provides a complete set of valves various types of electromagnetic, Electromechanical and thermal actuators, providing both automatic fire detectors and remote closing of valves.

1. Fire fire retarding valve ventilation system, comprising a housing placed in it a valve that is installed on the axis can be rotated, is made with an installed around the perimeter strip of thermal expanding material, a flexible sealing element and the actuator rotation axis of the valve, characterized in that the flexible sealing element is designed in the form of strips of sealing material.

2. The valve p. 1, characterized in that the tape is installed on the periphery of the valve with a size larger than the size of the gap between the flap and the inner surface of the housing.

3. The valve p. 1, characterized in that the tape sealing element is mounted on the housing and/or on the flap.

4. The valve p. 1, characterized in that it is provided with an additional sealing element, made in the form of a tape, similar to the primary, while the tape is installed on the periphery of the valve and the housing opportunities the output section, hosts flap.

6. The actuator rotation axis of the damper, with the associated with the axis of the return spring and locking mechanism, wherein the spring comprises an axis of the valve, and the locking mechanism is associated with the spring means fixed on her arm, and the actuator is equipped with a latch, and an additional lever fixed at one end on the spring with the lever, and the other associated with lock, made of heat-sensitive material and designed to deform or fracture when the temperature is above the preset level.

7. Drive under item 6, characterized in that the holder consists of elements connected by a hot-melt material.

8. Drive on PP.5 and 6, characterized in that the latch elements made in the form of plates.

9. Drive under item 6, characterized in that a spring one end of which is connected to the main lever and the other with an additional lever.

 

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FIELD: equipment for protection against fire, particularly to protect auditorium against fire appeared on stage with the use of flexible barrier made as curtain.

SUBSTANCE: fire-proof curtain is formed of web including several layers of heat-resistant material and additional kentledge arranged in lower curtain part. Kentledge is wound round rotary drum connected with electrical and standby manual drives. Drives include electric and manual elevator-descender systems. Curtain has sealing frame including stationary vertical members, horizontal member, movable members and rotary swinging pressing member. Curtain is provided with curtain dropping speed stabilization system including several weights located on different heights and connected one to another by flexible tie wound on multiple-pass pulley installed on drum shaft and damper. Device is operated in the following way. As fire occurs on stage fixing force is manually or automatically released from drum and curtain begins to move downwards under the action of kentledge. Pulley is rotated and weights are consecutively lifted to prevent curtain acceleration due to increasing curtain weight. When kentledge reaches floor weights reach dampers and stop. Swinging pressing member presses curtain to horizontal member and movable members press curtain to provide stage portal air-tightness, to localize fire on stage and to protect auditorium against hazardous combustion products.

EFFECT: increased efficiency.

3 dwg

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