CN212986214U

CN212986214U - Actuator of smoke exhaust valve

Info

Publication number: CN212986214U
Application number: CN202020930106.2U
Authority: CN
Inventors: 刘伏凡
Original assignee: Ningbo Fanling Air Valve Performer Co ltd
Current assignee: Ningbo Fanling Air Valve Performer Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-04-16
Anticipated expiration: 2030-05-27

Abstract

The utility model relates to an actuator of smoke exhaust valve, which comprises a bottom plate, wherein the bottom plate is provided with a first swing rod, a second swing rod, a roller for winding a steel wire rope, a ratchet wheel linked with the roller and a pawl linked when the first swing rod swings, and the bottom plate is provided with an electric driving device and a manual driving device which can respectively and independently drive the second swing rod to realize the unlocking of the first swing rod and the second swing rod; when the electric driving device is powered off or the manual driving device is not triggered, the pawl abuts against the ratchet wheel while the first swing rod and the second swing rod are locked; after the electric driving device is electrified or the manual driving device is triggered, the second swing rod and the first swing rod are unlocked, and the pawl is separated from the ratchet wheel. The utility model discloses well manual drive device driving stability is high and practice thrift manufacturing cost.

Description

Actuator of smoke exhaust valve

Technical Field

The utility model relates to a smoke damper, concretely relates to executor of smoke damper.

Background

A smoke exhaust valve matched with an actuator is arranged in a ventilation pipeline of a building, a torsion spring is arranged on a door shaft of the smoke exhaust valve, the valve is connected with the actuator through a steel wire rope, the steel wire rope overcomes the action of the torsion spring of the door shaft to close the valve under normal conditions, the actuator acts to loosen the steel wire rope when a fire occurs, and the valve is opened to exhaust smoke under the action of the torsion spring of the door shaft.

The actuator of the smoke exhaust valve in the prior art comprises a shell, a roller is rotatably arranged on a bottom plate of the shell, a steel wire rope wound on the roller, a ratchet wheel linked with the roller, a ratchet wheel for preventing the ratchet wheel from rotating when the ratchet wheel is abutted against the ratchet wheel, a swing rod assembly which is used for controlling the ratchet wheel to be abutted against and separated from the ratchet wheel and can rotate relative to the bottom plate, and a driving device for driving the swing rod assembly. The swing rod assembly comprises a first swing rod and a second swing rod, the first swing rod is provided with a ratchet, the second swing rod controls the first swing rod, and the driving device is used for driving the second swing rod. In order to realize double insurance, the driving device comprises an electric driving device which is electrically controlled and a manual driving device which is manually controlled. In the existing design, in order to realize shifting of the second oscillating bar, a hole or a groove is usually formed in the second oscillating bar by the manual driving device, and the shifting lever is moved by the manual driving device in a manual pressing or pushing and pulling mode through the arrangement of the shifting lever matched with the hole or the groove of the second oscillating bar, so that the second oscillating bar is swung; some design schemes consider the problem of integral assembly, a connecting plate is fixed on the second swing rod, and the connecting plate is matched with the deflector rod to realize the swing of the second swing rod by forming a hole or a groove on the connecting plate. No matter the second swing rod or the connecting plate is provided with the hole or the groove, firstly, a process flow is added, so that the processing cost is improved, and when the hole or the groove is formed in the connecting plate, parts are added, so that the material cost and the processing cost are further improved; secondly, there is the problem that driving lever and hole or groove correspond when the assembly, and the assembly degree of difficulty increases, has the risk that the second pendulum rod swing is not in place or does not swing when the assembly is not conform to the requirements moreover, and the drive is stable poor.

Application number CN201911012839.6 discloses a remote control actuator for smoke exhaust fire damper, which comprises a bottom plate, a switch collision block, a microswitch, a button or toggle assembly, an electromagnet, a lever assembly, a pawl assembly, a support block, a return spring, a wheel and wire rope pulley assembly; including button, vertical swash plate, spring, button installing support and stir the connecting rod among the button assembly, button, vertical swash plate integration are installed on the button installing support, and the button spring housing is in the upper end of vertical swash plate, stirs the connecting rod and is the horizontal direction, stirs to open on the connecting rod and has the slotted hole, and vertical swash plate inserts the slotted hole downthehole, stirs connecting rod and lever assembly interlock. Vertical swash plate and the slotted hole cooperation drive lever subassembly on stirring connecting rod (connecting plate) among the manual drive device (button assembly) in this scheme, have manufacturing cost's improvement and the increase of the assembly degree of difficulty, improved the not in place or the not wobbling risk of lever subassembly swing, probably lead to whole executor to become invalid for whole smoke damper can not play the effect that the fire prevention was discharged fume.

Therefore, further improvements are needed to address the problems with current actuators.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a manual drive device drive stability is high and practice thrift manufacturing cost's executor of smoke damper is provided to above-mentioned prior art current situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: an actuator of a smoke exhaust valve comprises a bottom plate, wherein a first swing rod, a second swing rod, a roller for winding a steel wire rope, a ratchet wheel linked with the roller and a pawl linked when the first swing rod swings are arranged on the bottom plate, and an electric driving device and a manual driving device which can independently drive the second swing rod to unlock the first swing rod and the second swing rod are arranged on the bottom plate; when the electric driving device is powered off or the manual driving device is not triggered, the pawl abuts against the ratchet wheel while the first swing rod and the second swing rod are locked; after the electric driving device is electrified or the manual driving device is triggered, the second swing rod and the first swing rod are unlocked, and the pawl is separated from the ratchet wheel; the manual driving device comprises a triggering part, and is characterized in that: the distance between the trigger surface of the trigger part and the second swing rod is gradually reduced from top to bottom, and when the manual driving device is triggered, the trigger surface can be abutted against the second swing rod to drive the second swing rod to swing.

Preferably, the trigger is a rotator. The trigger part is designed to be a revolving body, and each surface of the trigger part can be abutted against the second swing rod, so that the assembly is convenient, and the assembly efficiency is improved.

Preferably, the trigger surface of the trigger part is a conical surface. The triggering surface can be an inclined surface or a surface with other shapes, and the conical surface can realize the linear contact of the triggering part and the first connecting rod when in triggering, and the linear contact can ensure high contact stability compared with the surface contact.

The design of manual drive device is multiple, and as preferred, manual drive device establishes all the time to have the maintenance including setting up the depression bar that just can reciprocate relatively the bottom plate on the depression bar, cover and establish the trigger part that is used for driving the second pendulum rod on the depression bar that manual drive device is in the reset spring of not triggering state trend, is used for pressing the button of depression bar and cover, trigger part can be in the effect of pressing of button down removal and can reset under reset spring's the elastic force effect, when pressing manual drive device, the face of triggering can offset and drive the swing of second pendulum rod with the second pendulum rod.

Preferably, the second swing link comprises a first connecting rod and a second connecting rod connected with the first connecting rod in a bending manner, the electric driving device and the manual driving device are respectively located on two sides of the first connecting rod, and when the electric driving device or the manual driving device drives the first connecting rod to swing, the second connecting rod is matched with one end of the first swing link to unlock the first swing link and the second swing link. The length of the bottom plate is reduced due to the bending design of the second swing rod, the actuator is more compact in design, the size of the whole actuator is reduced, the occupied installation space is reduced, and the actuator is more attractive and small while the material cost is saved; the electric driving device and the manual driving device are respectively positioned at two sides of the first connecting rod, so that the distance between the electric driving device and the manual driving device and the first swinging shaft is the same, and the electric driving device and the manual driving device can adopt smaller force to drive more labor-saving under the condition of obtaining the same moment.

Preferably, a first swing shaft is arranged on the bottom plate, and a first through hole which is matched with the first swing shaft to realize rotation of the second swing rod is arranged on a bent connecting part of the first connecting rod and the second connecting rod. The first through hole is formed in the bending connecting portion, so that the second swing rod can obtain larger moment while the second swing rod is bent.

Preferably, the included angle between the first connecting plate and the second connecting plate is 80-100 degrees. The first connecting rod and the second connecting rod are basically perpendicular to the first swinging shaft, and under the action of the same driving force, the first connecting rod and the second connecting rod can obtain larger moment.

Preferably, the second connecting rod is provided with a first bayonet and a second bayonet, and when the end of the first swing rod is matched with the first bayonet, the first swing rod and the second swing rod are locked; when the electric driving device or the manual driving device drives the second swing rod, the end part of the first swing rod is separated from the first bayonet and moves to be matched with the second bayonet, and therefore the first swing rod and the second swing rod are unlocked. This application is through setting up first bayonet socket and second bayonet socket on the second connecting rod, and production and processing is simple, practices thrift manufacturing cost.

Preferably, the first swing link is further provided with a manual reset piece which can manually lock the first swing link and the second swing link after the first swing link and the second swing link are unlocked.

Preferably, the drum is provided with a steel wire rope box, and the steel wire rope box is provided with an opening for leading out a steel wire rope and limiting the swing amplitude of the steel wire rope. Wire rope is located the wire rope box, can prevent on the one hand that dust etc. from falling into, plays the protection to wire rope, and on the other hand open-ended setting can control wire rope's swing range when wire rope is not hard up or when backwinding, plays spacing effect to it.

Compared with the prior art, the utility model has the advantages of: the distance between the trigger surface of the trigger part of the manual driving device and the second swing rod is gradually reduced from top to bottom, and when the manual driving device is triggered, the trigger surface can be abutted against the second swing rod to drive the second swing rod to swing.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an exploded view of an embodiment of the present invention;

fig. 3 is a schematic view of a second swing link according to an embodiment of the present invention;

fig. 4 is a schematic view of a drum according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, the actuator of the smoke exhaust valve of the present invention comprises a bottom plate 1, wherein the bottom plate 1 is provided with a first swing rod 2, a second swing rod 3, a cylinder 4 for winding a steel wire rope 7, a ratchet 5 linked with the cylinder 4, a pawl 6 linked with the first swing rod 2 when swinging, and an electric driving device 8 and a manual driving device 9 which can independently drive the second swing rod 3 to unlock the first swing rod 2 and the second swing rod 3. When the electric driving device 8 is powered off or the manual driving device 9 is not triggered, the first swing rod 2 and the second swing rod 3 are locked, and the pawl 6 abuts against the ratchet wheel 5; after the electric driving device 8 is electrified or the manual driving device 9 is triggered, the second swing rod 3 and the first swing rod 2 are unlocked, and the pawl 6 is separated from the ratchet wheel 5. In the present exemplary embodiment, the electric drive 8 is an electromagnet.

The first swing link 2 is further provided with a manual reset piece 22 which can manually lock the first swing link 2 and the second swing link 3 after the first swing link 2 and the second swing link 3 are unlocked.

The second swing link 3 comprises a first connecting rod 31 and a second connecting rod 32 connected with the first connecting rod 31 in a bending mode, and a first through hole 3b matched with the first swing shaft 11 on the bottom plate to achieve rotation of the second swing link 3 is formed in a bending connection portion 3a of the first connecting rod 31 and the second connecting rod 32. The included angle between the first connecting rod 31 and the second connecting rod 32 is 80-100 degrees. The first connecting rod 31 extends along one end of the bent connecting part 3a to the first side edge direction of the bottom plate 1, the second connecting rod 32 extends along the other end of the bent connecting part 3a to the second side edge direction of the bottom plate 1, the first side edge and the second side edge are adjacent edges, so that an area defined by the second swing link 3, the first side edge and the second side edge is formed on the bottom plate 1, and the manual driving device 9 is installed in the area. In this embodiment, the manual drive 9 is located in the region of the lower left corner of the base plate 1.

The second connecting rod 32 is provided with a first bayonet 33 and a second bayonet 34, and when the end part of the first swing rod 2 is matched with the first bayonet 33, the first swing rod 2 and the second swing rod 3 are locked; when the electric driving device 8 or the manual driving device 9 drives the second swing link, the end of the first swing link 2 is disengaged from the first bayonet 33 and moves to be matched with the second bayonet 34, so that the first swing link 2 and the second swing link 3 are unlocked.

The manual driving device 9 comprises a pressing rod 91 which is arranged on the bottom plate 1 and can move up and down relative to the bottom plate 1, a return spring 92 which is sleeved on the pressing rod 91 and always tends to keep the manual driving device 9 in an unfired state, a button 93 for pressing the pressing rod 91 and a triggering portion 94 which is sleeved on the pressing rod 91 and is used for driving the first connecting rod 31, the triggering portion 94 can move down under the pressing action of the button 93 and can reset under the elastic force action of the return spring 92, the distance between a triggering surface 94a of the triggering portion 94 and the first connecting rod 31 from top to bottom is gradually reduced, and when the manual driving device 9 is pressed, the triggering surface 94a can abut against the first connecting rod 31 to drive the second swing rod 3 to swing. In this embodiment, the trigger 94 is a rotating body, and the trigger surface 94a is a conical surface.

The drum 4 is provided with a wire rope box 41, and the wire rope box 41 is provided with an opening 41a for leading out the wire rope 7 and limiting the swing amplitude of the wire rope 7.

The working principle is as follows: when the electric driving device 8 is powered off or the manual driving device 9 is not pressed (an actuator is in a reset state), the first swing rod 2 is matched with the first bayonet 33, the pawl 6 abuts against the ratchet wheel 5 while the first swing rod 2 and the second swing rod 3 are locked, and the steel wire rope 7 wound on the roller 4 overcomes the action of a torsion spring of a smoke exhaust valve shaft to close the smoke exhaust valve; after the electric driving device 8 is electrified or the manual driving device 9 is pressed, the second swing rod 3 swings, the first swing rod 2 is separated from the first bayonet 33 and moves to be matched with the second bayonet 34, the pawl 6 is separated from the ratchet wheel 5 while the second swing rod 3 and the first swing rod 2 are unlocked, the steel wire rope 7 wound on the roller 4 is loosened, and at the moment, the smoke exhaust valve is opened under the acting force of the torsion spring of the smoke exhaust valve shaft, so that smoke exhaust is realized.

Claims

1. An actuator of a smoke exhaust valve comprises a bottom plate (1), wherein a first swing rod (2), a second swing rod (3), a roller (4) wound by a steel wire rope (7), a ratchet wheel (5) linked with the roller (4) and a pawl (6) linked when the first swing rod (2) swings are arranged on the bottom plate (1), and an electric driving device (8) and a manual driving device (9) which can independently drive the second swing rod (3) to unlock the first swing rod (2) and the second swing rod (3) are arranged on the bottom plate (1); when the electric driving device (8) is powered off or the manual driving device (9) is not triggered, the pawl (6) abuts against the ratchet wheel (5) while the first swing rod (2) and the second swing rod (3) are locked; after the electric driving device (8) is electrified or the manual driving device (9) is triggered, the second swing rod (3) and the first swing rod (2) are unlocked, and the pawl (6) is disengaged from the ratchet wheel (5); the manual drive device (9) comprises a trigger part (94), characterized in that: the distance between the trigger surface (94a) of the trigger part (94) and the second swing rod (3) is gradually reduced from top to bottom, and when the manual driving device (9) is triggered, the trigger surface (94a) can be abutted against the second swing rod (3) to drive the second swing rod (3) to swing.

2. The actuator of a smoke exhaust valve according to claim 1, wherein: the trigger part (94) is a rotator.

3. An actuator for a smoke exhaust valve according to claim 2, wherein: the trigger surface (94a) of the trigger part (94) is a conical surface.

4. The actuator of a smoke exhaust valve according to claim 1, wherein: the manual driving device (9) comprises a pressing rod (91) which is arranged on the bottom plate (1) and can move up and down relative to the bottom plate (1), a reset spring (92) which keeps the manual driving device (9) in an unfired state trend, a button (93) used for pressing the pressing rod (91) and a trigger part (94) which is sleeved on the pressing rod (91) and used for driving the second swing rod (3) are arranged on the pressing rod (91) all the time, the trigger part (94) can move downwards under the pressing action of the button (93) and can reset under the elastic force action of the reset spring (92), and when the manual driving device (9) is pressed, the trigger surface (94a) can abut against the second swing rod (3) to drive the second swing rod (3) to swing.

5. An actuator for a smoke exhaust valve according to any of the claims 1 to 3, characterised in that: the second swing rod (3) comprises a first connecting rod (31) and a second connecting rod (32) which is connected with the first connecting rod (31) in a bent mode, the electric driving device (8) and the manual driving device (9) are respectively located on two sides of the first connecting rod (31), when the electric driving device (8) or the manual driving device (9) drives the first connecting rod (31) to swing, the second connecting rod (32) is matched with one end of the first swing rod (2) to unlock the first swing rod (2) and the second swing rod (3).

6. An actuator for a smoke exhaust valve according to claim 5, wherein: the base plate (1) is provided with a first swing shaft (11), and a first through hole (3b) which is matched with the first swing shaft (11) to realize rotation of the second swing rod (3) is formed in a bent connecting part (3a) of the first connecting rod (31) and the second connecting rod (32).

7. The actuator of a smoke exhaust valve according to claim 6, wherein: the included angle between the first connecting rod (31) and the second connecting rod (32) is 80-100 degrees.

8. An actuator for a smoke exhaust valve according to claim 5, wherein: a first bayonet (33) and a second bayonet (34) are arranged on the second connecting rod (32), and when the end part of the first swing rod (2) is matched with the first bayonet (33), the first swing rod (2) and the second swing rod (3) are locked; when the electric driving device (8) or the manual driving device (9) drives the second swing rod, the end part of the first swing rod (2) is separated from the first bayonet (33) and moves to be matched with the second bayonet (34), and therefore the first swing rod (2) and the second swing rod (3) are unlocked.

9. An actuator for a smoke exhaust valve according to claim 5, wherein: and a manual reset piece (22) which can manually lock the first swing rod (2) and the second swing rod (3) after the first swing rod (2) and the second swing rod (3) are unlocked is further arranged on the first swing rod (2).

10. The actuator of a smoke exhaust valve according to claim 1, wherein: the drum (4) is provided with a steel wire rope box (41), and the steel wire rope box (41) is provided with an opening (41a) for leading out a steel wire rope (7) and limiting the swing amplitude of the steel wire rope (7).