CN213145500U - Smoke exhaust fire damper actuating mechanism - Google Patents

Abstract

The utility model relates to a fire prevention valve technical field, in particular to fire prevention valve actuating mechanism discharges fume. The electromagnetic control device comprises a shell, a main shaft, a circular gear, a sector gear, an elastic piece and an electromagnetic controller, wherein the circular gear is sleeved on the main shaft and can drive the main shaft to rotate together; when the first limiting rod is contracted, the sector gear rotates to a second position and is positioned by the second limiting rod; after the second limiting rod is contracted, the sector gear can rotate to a third position. Only one elastic piece is arranged, and the rotation limit of the sector gear is carried out through two limit rods of the electromagnetic controller, so that the main shaft has three rotation position states; the mutual restriction of multiple groups of elastic components is avoided, and the reliability is high; the equipment has simple structure and low cost.

Description

Smoke exhaust fire damper actuating mechanism

Technical Field

The utility model relates to a fire prevention valve technical field, in particular to fire prevention valve actuating mechanism discharges fume.

Background

Smoke exhaust and fire prevention valves are generally installed in smoke exhaust pipelines of high-rise buildings and underground facilities. The smoke exhaust fire prevention valve is in a closed state at ordinary times, when a fire disaster occurs, the fire disaster control center controls an actuating mechanism of the smoke exhaust fire prevention valve, the actuating mechanism opens a valve, and meanwhile, a smoke exhaust fan is started to exhaust smoke, so that time is provided for people in a building to evacuate. When the temperature of the exhaust smoke reaches 280 ℃, the actuating mechanism controls the valve to be closed, and open fire is prevented from spreading to other non-fire areas from the pipeline.

The existing actuating mechanism is generally provided with two groups of springs, one group of springs performs opening action, the other group of springs performs closing action, and the two groups of springs respectively act in opposite directions, so that the elastic forces of the two groups of springs have certain mutual restriction action.

SUMMERY OF THE UTILITY MODEL

For overcoming the deficiencies in the prior art, the utility model provides a smoke exhaust fire damper actuating mechanism.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a fire damper actuating mechanism discharges fume which characterized in that: the electromagnetic controller comprises a first limiting rod and a second limiting rod which can independently stretch, and when the first limiting rod extends out, the sector gear can be limited to overcome elasticity and be positioned at a first position; when the second limiting rod extends out, the second limiting rod extends into the limiting groove, and after the first limiting rod is contracted, the sector gear can rotate to a second position under the action of elastic force and is positioned by the second limiting rod; after the second limiting rod is contracted, the sector gear can rotate to a third position under the action of the elastic force.

Furthermore, the limiting groove is a long groove with radian, and the arc center of the limiting groove is positioned on the rotating shaft of the sector gear.

Furthermore, a fixed rod is arranged in the shell, a pull rod is arranged on the sector gear, one end of the elastic piece is fixed on the fixed rod, and the other end of the elastic piece is fixed on the pull rod.

Further, the through hole has been seted up to the casing bottom, the main shaft is outside extending out the casing by the through hole, main shaft middle section position is equipped with outside convex shaft shoulder, the through hole is equipped with the mounting groove that expands outward, the cover is equipped with flat bearing on the main shaft, flat bearing one end supports the shaft shoulder other end and supports the mounting groove bottom.

Furthermore, the circular gear is connected with the main shaft through a key groove structure.

Furthermore, a fixing shaft is arranged on the shell, the sector gear comprises a lantern ring, a ball bearing is arranged in the lantern ring, and the lantern ring is rotatably arranged on the fixing shaft through the ball bearing.

Furthermore, the bottom of the fixed shaft is provided with a lifting table, and the lifting table is used for lifting the sector gear, so that the height of the sector gear is matched with that of the circular gear.

Furthermore, a cross beam is further arranged in the shell, and the electromagnetic controller is installed on the cross beam.

Furthermore, vertical sections extending upwards are arranged at two ends of the cross beam, the vertical sections are detachably connected with the inner wall of the shell through bolts, a supporting section extending upwards is arranged in the middle of the cross beam, a long hole is formed in the supporting section, and the electromagnetic controller can be arranged on the supporting section through the bolts and can be adjusted along the direction of the long hole.

Furthermore, a first reinforcing rib plate is arranged between the vertical section and the cross beam, and a second reinforcing rib plate is arranged between the supporting section and the cross beam.

As can be seen from the above description of the present invention, compared with the prior art, the smoke exhaust fire damper actuator provided by the present invention only has an elastic member, and the rotation of the sector gear is limited by two limiting rods of the electromagnetic controller, so that the main shaft has three rotation positions; the mutual restriction of multiple groups of elastic components is avoided, and the reliability is high; the equipment has simple structure and low cost.

Drawings

Fig. 1 is the utility model relates to a smoke damper actuator schematic structure.

Fig. 2 is a schematic view of the working state of the present invention.

Fig. 3 is a schematic view of the working state of the present invention.

Fig. 4 is a third schematic view of the working state of the present invention.

Fig. 5 is the utility model relates to a smoke damper actuator decomposes the schematic diagram.

Fig. 6 is a schematic view of the shell structure of the present invention.

The labels in the figure correspond to the following: 1. the bearing comprises a shell, 11 through holes, 12 mounting grooves, 13 fixing shafts, 14 lifting tables, 15 fixing rods, 16 cross beams, 161 vertical sections, 162 supporting sections, 163 long holes, 164 first reinforcing rib plates, 165 second reinforcing rib plates, 2 main shafts, 21 shaft shoulders, 22 plane bearings, 23 key groove structures, 3 circular gears, 4 sector gears, 41 lantern rings, 42 ball bearings, 43 limiting grooves, 44 pull rods, 5 elastic parts, 6 electromagnetic controllers, 61 first limiting rods, 62 second limiting rods.

Detailed Description

The present invention will be further described with reference to the following detailed description.

Referring to fig. 1 to 6, an actuator of a smoke evacuation fire damper includes a housing 1, a main shaft 2, a circular gear 3, a sector gear 4, an elastic member 5, and an electromagnetic controller 6.

The main shaft 2 is rotatably arranged in the shell 1, one end of the main shaft 2 extends out of the shell 1, a through hole 11 is formed in the bottom of the shell 1, the main shaft 2 extends out of the shell 1 through the through hole 11, an outwards convex shaft shoulder 21 is arranged in the middle of the main shaft 2, an outwards enlarged mounting groove 12 is formed in the through hole 11, a plane bearing 22 is sleeved on the main shaft 2, one end of the plane bearing 22 abuts against the shaft shoulder 21, the other end of the plane bearing abuts against the bottom of the mounting groove 12, the circular gear 3 is sleeved on the main shaft 2 and connected through a key groove structure 23, and the circular gear.

Be equipped with fixed axle 13 on casing 1, fixed axle 13 bottom is equipped with lifting platform 14, sector gear 4 includes a lantern ring 41, be equipped with ball bearing 42 in the lantern ring 41, lantern ring 41 is rotatable through ball bearing 42 locate on fixed axle 13, lifting platform 14 is used for raising sector gear 4, make sector gear 4 height and circular gear 3 looks adaptation, sector gear 4 is rotatable locate in casing 1 and with circular gear 3 looks meshing, spacing groove 43 has been seted up on sector gear 4, spacing groove 43 is the long type groove that has the radian, the arc center of spacing groove 43 is located sector gear 4's pivot, elastic component 5 is located casing 1, be equipped with dead lever 15 in the casing 1, be equipped with pull rod 44 on sector gear 4, elastic component 5 one end is fixed in on dead lever 15, the other end is fixed in on pull rod 44, elastic component 5 accessible elasticity drives sector gear 4 rotatory.

A beam 16 is also arranged in the housing 1, and the electromagnetic controller 6 is arranged on the beam 16. The two ends of the beam 16 are provided with vertical sections 161 extending upwards, the vertical sections 161 are detachably connected with the inner wall of the housing 1 through bolts, the middle part 16 of the beam is provided with a support section 162 extending upwards, the support section 162 is provided with a long hole 163, and the electromagnetic controller 6 is arranged on the support section 162 through bolts and can be adjusted along the direction of the long hole 163. A first reinforcing rib plate 164 is arranged between the vertical section 161 and the cross beam 16, and a second reinforcing rib plate 165 is arranged between the support section 162 and the cross beam 16. The electromagnetic controller 6 comprises a first limiting rod 61 and a second limiting rod 62 which can independently stretch and retract, and when the first limiting rod 61 extends out, the sector gear 4 can be limited to be positioned at a first position by overcoming the elasticity; when the second limit rod 62 extends out, the second limit rod extends into the limit groove 43, and after the first limit rod 61 contracts, the sector gear 4 can rotate to the second position under the action of elastic force and is positioned by the second limit rod 62; after the second position-limiting rod 62 is retracted, the sector gear 4 can rotate to the third position under the action of the elastic force.

The operating principle of the smoke-discharging fire-proof valve actuating mechanism is as follows:

the normal state: the first and second limiting rods 61 and 62 of the electromagnetic controller 6 are in an extended state, and at this time, the sector gear 4 is in a first position, in which the elastic member 5 is in a fully extended state, and due to the blocking of the first limiting rod 61, the sector gear 4 is kept in the first position, and the position of the main shaft 2 in this state corresponds to a normally closed state of the vane of the smoke exhaust fire damper.

Smoke exhaust state in fire: the first limiting rod 61 of the electromagnetic controller 6 contracts, because the limitation of the first limiting rod 61 is lost, the sector gear 4 is pulled to rotate by the elastic force of the elastic piece 5, because the limiting groove 43 is a long-shaped groove with radian, one section of relative displacement can be carried out between the second limiting rod 62 and the limiting groove 43, the sector gear 4 will rotate until the second limiting rod 62 is clamped at one end of the limiting groove 43 and then stops, at the moment, the elastic piece 5 is not completely contracted and is in a half-stretching state, the sector gear 4 is at the second position, and the sector gear 4 rotates and simultaneously drives the circular gear 3 to rotate, so as to drive the main shaft 2 to rotate to change the angle, and the position of the main shaft 2 in the state corresponds to the smoke exhaust opening state of the blades of the smoke exhaust fire valve when fire occurs.

Closed state in fire: when the temperature of the smoke rises to 270 ℃, the smoke discharge is meaningless, and in order to avoid the spread of fire, a smoke discharge channel needs to be closed; the second limit rod 62 of the electromagnetic controller 6 contracts, and due to the loss of the limit of the second limit rod 62, the elastic force of the elastic part 5 pulls the sector gear 4 to rotate again, the sector gear 4 rotates and drives the circular gear 3 to rotate at the same time, so as to drive the main shaft 2 to rotate to change the angle, and the position of the main shaft 2 in the state corresponds to the blade of the smoke exhaust fire damper to rotate to the state of being closed again.

The above-mentioned only be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and all utilize this design right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims (10)

1. The utility model provides a fire damper actuating mechanism discharges fume which characterized in that: the electromagnetic controller comprises a first limiting rod and a second limiting rod which can independently stretch, and when the first limiting rod extends out, the sector gear can be limited to overcome elasticity and be positioned at a first position; when the second limiting rod extends out, the second limiting rod extends into the limiting groove, and after the first limiting rod is contracted, the sector gear can rotate to a second position under the action of elastic force and is positioned by the second limiting rod; after the second limiting rod is contracted, the sector gear can rotate to a third position under the action of the elastic force.

2. The smoke evacuation fire damper actuator of claim 1, wherein: the limiting groove is a long groove with radian, and the arc center of the limiting groove is positioned on the rotating shaft of the sector gear.

3. The smoke evacuation fire damper actuator of claim 1, wherein: the shell is internally provided with a fixed rod, the sector gear is provided with a pull rod, one end of the elastic piece is fixed on the fixed rod, and the other end of the elastic piece is fixed on the pull rod.

4. The smoke evacuation fire damper actuator of claim 1, wherein: the through hole has been seted up to the casing bottom, the main shaft is outside extending out the casing by the through hole, main shaft middle section position is equipped with outside convex shaft shoulder, the through hole is equipped with the mounting groove that expands outward, the cover is equipped with flat bearing on the main shaft, flat bearing one end supports the shaft shoulder other end and supports the mounting groove bottom.

5. The smoke evacuation fire damper actuator of claim 1, wherein: the circular gear is connected with the main shaft through a key groove structure.

6. The smoke evacuation fire damper actuator of claim 1, wherein: the casing is provided with a fixed shaft, the sector gear comprises a lantern ring, a ball bearing is arranged in the lantern ring, and the lantern ring is rotatably arranged on the fixed shaft through the ball bearing.

7. The smoke evacuation fire damper actuator of claim 6, wherein: the lifting platform is arranged at the bottom of the fixed shaft and used for lifting the sector gear, so that the height of the sector gear is matched with that of the circular gear.

8. The smoke evacuation fire damper actuator of claim 1, wherein: and a cross beam is further arranged in the shell, and the electromagnetic controller is arranged on the cross beam.

9. The smoke evacuation fire damper actuator of claim 8, wherein: the electromagnetic control device is characterized in that vertical sections extending upwards are arranged at two ends of the cross beam, the vertical sections are detachably connected with the inner wall of the shell through bolts, a supporting section extending upwards is arranged in the middle of the cross beam, a long hole is formed in the supporting section, and the electromagnetic control device can be arranged on the supporting section in an adjustable mode along the direction of the long hole through the bolts.

10. The smoke evacuation fire damper actuator of claim 9, wherein: a first reinforcing rib plate is arranged between the vertical section and the cross beam, and a second reinforcing rib plate is arranged between the supporting section and the cross beam.

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