CN2713263Y

CN2713263Y - Secondary actuator of smoke exhausting fire damper

Info

Publication number: CN2713263Y
Application number: CN 200420037124
Authority: CN
Inventors: 王兆君
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-25
Filing date: 2004-06-25
Publication date: 2005-07-27
Anticipated expiration: 2014-06-25

Abstract

The utility model discloses the secondary actuator of a smoke exhausting fire damper which is arranged in the tall buildings and use for the opening and closing of the smoke exhausting port of a fire-proof smoke exhausting ventilating system. The secondary actuator of the smoke exhausting fire damper is composed of a roller, a swing frame shaft, the swing frame of a micro-motion deflector rod, a swing rod with a swing rod shaft, a temperature-sensing seat with a temperature sensor, an electric magnet fixed on a base, a microswitch fixed on the base, and an operating device connected with a main shaft. A cam with an arc-shaped groove, the positioning pin of a quadratic rotary wheel, and the roller of the swing frame are matched with each other. The cam and the quadratic rotary wheel are connected with the main shaft, one end of a dextral torsion spring is fixed on the main shaft arranged above the cam, a levogyrate torsion spring whose one end is fixed to a base plate is connected with a main shaft sleeve arranged below the quadratic rotary wheel, and the other ends of the levogyrate and the dextral torsion spring are fixed to the quadratic rotary wheel and then the operating device is formed. The cam and the quadratic rotary wheel with the levogyrate and the dextral torsion spring are matched with each other and connected with the main shaft to form an operating mechanism. The secondary actuator of the smoke exhausting fire has the advantages of simple and compact structure, small volume for omitting a plurality of parts, easy use, and high reliability.

Description

Smoke evacuation fire-closing valve secondary actuator

Technical field

The utility model relates to and being installed in the tall building, is used for device that the smoke exhaust port of fire and smoke exhaust ventilation system is opened, closed, smoke evacuation fire-closing valve secondary actuator.

Background technique

For the purpose of fully, in the ventilation system of general tall building smoke exhaust port is installed all, in case breaking out of fire, available manually or by Fire Services Communication Centre opened smoke-discharging mouth, discharge fume,, had fire in the flue gas if flue-gas temperature surpasses 280 °, can encourage fire spreading as not stopping smoke evacuation, therefore need again smoke exhaust port is closed.

The patent No. 96214657.9 " smoke evacuation fire-closing valve secondary actuator ", the patent No. 99215429.4 " smoke evacuation fire-closing valve actuator " is though also provide a kind of actuator that can open, close secondary action, but its structure is complicated, part is more, thereby volume is big.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of smoke evacuation fire-closing valve secondary actuator is provided, and it is simple in structure, compact, part is few, thereby volume is little, easier installation, maintenance, maintenance, and easy to use, good reliability.

The technical scheme in the invention for solving the above technical problem is: smoke evacuation fire-closing valve secondary actuator is by the band roller, the rocker axle, the rocker of fine motion driving lever, the fork of band fork axle, the temperature sense seat of band temperature sensor, electromagnet, sensitive switch all is fixed on the base and the operation equipment that is connected with main shaft constitutes, described operation equipment by on curve bath arranged cam and secondary runner on location Xiao and the roller on the rocker cooperate, cam, the secondary runner is connected on the main shaft, a fixing end of dextrorotation torsion spring on the main shaft of cam top, connection one end is fixed on the left-handed torsion spring on the base plate, a left side on the collar bush of secondary runner below, the end in addition of dextrorotation torsion spring is fixed on the secondary runner and constitutes.

Compared with prior art, advantage of the present utility model is: the dextrorotation torsion spring of this secondary actuator directly is fixed on the main shaft, reduced last collar bush, one end of left and right turn-knob spring all is fixed on the secondary runner, directly be buckled on the temperature sensor with the breach on the secondary runner, only matching to merge by cam with the secondary runner of left and right torsion spring is connected on the main shaft, just constitutes operating device, so simple in structure, compact, saved some parts, volume is little, use, easy for installation.On the other base plate of cam, also fixing shelves post makes secondary runner location, thereby uses safer, reliable.

During the pull bar manually-operable, can draw, can push away again in addition, be separately installed with on the both sides of case and draw circle and push-botton operation spare, especially when the valve body mounting point less, on one side can't operate the time, other just can user friendlyly operate by the operation piece on limit.

Description of drawings

Fig. 1, structural representation of the present utility model.(the A-A view of Fig. 2)

The B-B view of Fig. 2, Fig. 1.

The C-C view of Fig. 3, Fig. 1.

Embodiment

Embodiment is further described the utility model below in conjunction with accompanying drawing.

The end of rocker 13, be screwed the fine motion driving lever 11 that compresses sensitive switch 12 when being used to move, roller 14 is riveted on the middle part of rocker 13 by mandrel 15, torsion spring 27 is sleeved on the rocker axle 28, one end snaps on the base plate 1, other holds hook on the opening slot of rocker, and rocker 13 is fixed on the rocker axle 28 by nut.

Fork 10 is fixed on the fork axle 30 by nut, and an end has bayonet socket, and end is connected with the moving iron core of electromagnet 21, and tower spring 6 is assemblied on the moving iron core of electromagnet, withstands fork 10 ends.

Cam 9 edges have on arc notch and its two curve baths are arranged, and flute length is 0～120 ° of scope.

The temperature sensor seat is weldingly fixed on the base plate 1, the interior temperature sensor 17 that screws in, electromagnet 21, shelves post 7, fork axle 30, rocker axle 28, sensitive switch 12 are screwed on base plate 1, and sensitive switch 32 is screwed on base plate 1 by fine motion support 33, and collar bush 24 riveted fixing are on base plate 1.

Main shaft 8 upper ends are flat side's shape, the lower end is the ladder tubulose, be equipped with dextrorotation torsion spring 23 from top to bottom successively, cam 9, secondary runner 16, left-handed torsion spring 26, cam 9 is weldingly fixed on the main shaft 8, be fixed with location Xiao 18 on the secondary runner 16, embed from bottom to top in the curve bath on the cam, one end of dextrorotation torsion spring 23 snaps on the main shaft, end hook is on the secondary runner in addition, and an end of left-handed torsion spring 26 is stuck in base plate 1, the other end passes the through hole on the secondary runner 16, extend up in another curve bath on the cam 9, collar bush 24 is enclosed within on main shaft 8 lower ends, after main shaft 8 stretches out collar bush 24 and adds packing ring, be fixed on the base plate 1 by jump ring, handle 29 is screwed on main shaft 8.

Pull bar 4 one ends welding fixedly arm-tie 3, one terminations is a tight fit in the button 5, and pull bar end in addition is equipped with and draws circle 19, is with stage clip 22 and spacing with cotter pin, and pull bar is assemblied in the positioning hole on case 2 two sides, wherein necessarily also is fixed with drag link sleeve 20 in the hole.

During use, this device is screwed on the smoke evacuation fire-closing valve, and is connected with terminal box with flexible pipe, and the sharf on the valve is fixed in the through hole of main shaft 8 and connects into integral body.

Draw circle 19 with pulling, guarantee rocker 13, the disengagement of fork 10, clockwise rotate handle 29, the end of secondary runner 16 is fastened on the head of temperature sensor 17, secondary runner head compresses sensitive switch 32 simultaneously, unclamp and draw circle 19, another mistake clockwise handle with sleeve 29 makes rocker 13, fork 10 fastens as shown in Figure 1, is the reset mode of mechanism, in case generation fire alarm, available pulling moving drawn circle 19 or pressed button 5, makes the terminal or energising of arm-tie 3 pulling forks 10 make electromagnet 21 actions, and the end of pulling fork 10 is thrown off rocker 13 with fork 10 bayonet sockets, under the effect of dextrorotation torsion spring 23, cam 9 skids off the roller 14 on the rocker by force; Cam 9 clockwise rotates, driving main shaft 8 and sharf rotates, valve open is discharged fume, fine motion this moment dead man 11 rotates with rocker 13, and sensitive switch 12 is releasing orientation, the output valve opening signal, signal is two groups, one group is non-transformer, can make interlocking or signal usefulness arbitrarily separately, and another group can only be made same power supply signal.

When flue-gas temperature is spent above 280, easily fusion tube thawing in the temperature sensor 17, in its head retraction temperature sensor seat, secondary runner 16 is unobstructed, under the effect of left-handed torsion spring 26, rotate, location Xiao 18 on it rotates counterclockwise with regard to actuating cam 9, be buckled on the roller 14 up to cam notch, and fork 10 and rocker 13 are fastened again, and main shaft 8 rotating band movable vane bobbins rotate up to valve closing is prevented fires, and this moment is along with the action of secondary runner, sensitive switch 32 is releasing orientation, output temperature sensor actuating signal, valve is closed, and this output signal can be interlocked with miscellaneous equipment.

Claims

1, a kind of smoke evacuation fire-closing valve secondary actuator, in case (2), band roller (14), rocker axle (28), the rocker (13) of fine motion driving lever (11), the fork (10) of band fork axle (30), the temperature sense seat of band temperature sensor (17), electromagnet (21), sensitive switch (12) all is fixed on base (1) operation equipment last and that be connected with main shaft (8) and constitutes, it is characterized in that described operation equipment by on curve bath arranged cam (9) and secondary runner (16) on location Xiao (18) and the roller (14) on the rocker (13) cooperate, cam (9), secondary runner (16) is connected on the main shaft (8), the main shaft (8) of cam (9) top is gone up a fixedly end of dextrorotation torsion spring (23), the last connection of collar bush (24) one end of secondary runner (16) below is fixed on the left-handed torsion spring (26) on the base plate (1), a left side, dextrorotation torsion spring (26), (23) end in addition is fixed on the secondary runner (16) and constitutes.

2, actuator according to claim 1 is characterized in that cam (9) edge has on arc notch and its two curve baths are arranged, and flute length is 0-120 ° of scope.

3, actuator according to claim 1 is characterized in that being fixed with a grade post (7) on the other base plate (1) of cam (9).

4, actuator according to claim 1 and 2 is characterized in that locating in the curve bath on Xiao (18) embedding cam (9), and an end of left-handed torsion spring (26) passes the through hole on the secondary runner (16), inserts in another curve bath on the cam (9).

5, actuator according to claim 1, it is characterized in that in the positioning hole on case (2) two side pull bar (4) being installed, the welding of pull bar (4) one ends fixedly is a tight fit in the button (5) arm-tie (3) one terminations, pull bar is held in addition to be equipped with and is drawn circle (19), is with stage clip (22) and uses cotter pin spacing, wherein also is fixed with drag link sleeve (20) in the positioning hole.

6, actuator according to claim 1 is characterized in that sensitive switch (32) is fixed on the base plate (1) with nut by fine motion support (33).