CN201836489U

CN201836489U - Separating fireproof check valve

Info

Publication number: CN201836489U
Application number: CN2010205581412U
Authority: CN
Inventors: 秦先军
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-11
Filing date: 2010-10-11
Publication date: 2011-05-18
Anticipated expiration: 2020-10-11

Abstract

The utility model discloses a separating fireproof check valve which is used for smoke exhaust and fire prevention in a public smoke exhaust channel of a residential building and comprises a valve body, a valve sheet, an actuating mechanism and a separating joint. Except the separating joint, all the other components are made of metal materials. One end of the separating joint is connected to one end of a smoke inlet of the valve body by an upper fusible sheet and a lower fusible sheet, and the other end of the separating joint is connected with a hose of a range hood. When a fire disaster takes place and the preset temperature is reached, the fusible sheets are separated from each other and then the separating joint is separated from the valve body; therefore, no matter where a fire source comes from, the separating fireproof check valve can achieve the purpose of reliable cutting-off of the fire source. The actuating mechanism is located at the lower part of one side of the smoke outlet of the valve and comprises a common hinge, a rotating plate, a torsion spring, a leaning-against column and the fusible sheets; when the fire disaster takes place, the fusible sheets are heated to separate from each other, the torsion spring drives the rotating plate to rotate and then the rotating plate drives a movable blade to rotate and not to stop until the leaning-against column of the movable blade leans against the valve sheet; and the pressure generated by the combination of the above actions on the valve body cannot disappear due to the elasticity losing of the torsion spring under high temperature.

Description

A kind of separated type fire-preventing check valve

Technical field

Present technique relates to the anti-smoke blowing frpf safety check of discharging fume that is used to of house kitchen toilet public smokejack system.

Background technique

At present most areas, whole nation smoke evacuation safety check of all requiring to be used for public smokejack system possesses fire-proof function, " a kind of imaginary axis formula selfsealings flue safety check " (patent No. 200720082355.5) of applying in person is only suitable before this is the raw material manufacturing with plastics, can't satisfy the frpf needs.Existing other technology mainly is to rely on the elastic force of spring to oppress valve block throttle down by force merely about the fire prevention aspect, there is not other related measure to ensure the persistency strength of elastic force, and the high temperature that produces when really catching fire will make spring lose performance, cannot strongly push down valve block, because valve block is that metallic material is made, all might cause the valve block distortion in processes such as production, transportation, installation, its air leakage will not increase greatly when having weight.And the rotating shaft of prior art valve block is on the top of valve block, and air-flow is to want to blow row down earlier when kitchen ventilator is opened, and this just causes the powerful resistance to the flue air upflow.There is great defective in therefore existing braking technique.

The model utility content

The purpose of this utility model provides a kind of smoke evacuation little exhaust smoke level of resistance big favorable sealing property that has, fire prevention reliability high fire-preventing check valve.

The technical solution of the utility model is a kind of separated type fire-preventing check valve, comprises valve body, valve block, actuator and separating joint.Other parts are the metallic material manufacturing and form except that separating joint.Wherein valve body has into mouth and smoke outlet, and an end of separating joint advances mouth one end by what each fuse sheet up and down was connected valve body, and the other end is connected with the flexible pipe of kitchen ventilator.After temperature reaches predetermined temperature when fire takes place fuse sheet separately, separating joint separates with valve body thereupon, fire-closing valve and kitchen ventilator is no longer included get in touch, no matter burning things which may cause a fire disaster is from the purpose that where can both accomplish reliably to cut off burning things which may cause a fire disaster.

Described actuator is in the bottom of valve body smoke outlet one side, by ready-made hinge, rotor plate, torsion spring, push against post and fuse sheet constitutes, wherein hinge is divided into fixed page or leaf sheet and moving page or leaf sheet, wherein fixed page or leaf sheet is fixed on the valve body by screw, moving page or leaf sheet can rotate around the axle that is in substantially horizontal, is provided with one and pushes against post by what screw was made on moving page or leaf sheet.Rotor plate is in the below of the fixed page or leaf of hinge sheet, is provided with a circular hole, is fixed on the valve body by screw, can rotate on the plane that is in perpendicular to horizontal plane, and described rotor plate is roughly circular arc.Also be provided with a torsion spring above same screw of rotor plate, an end hook of torsion spring is against on the valve body at the other end on the rotor plate, is provided with a nut and makes both closely contacts mutually between torsion spring and rotor plate.Described fuse sheet is in the below of rotor plate, and an end is fixed on the valve body, and the other end is fixed on the rotor plate.

Described valve block is in valve body smoke outlet one side, and the base of valve block directly is shelved on the rotatingshaft of hinge.Advance mouth one side at valve body and be provided with the counterweight member that matches with valve block, described counterweight member is connected with valve block by a connecting sheet.

Compared with prior art the utility model can not only ensure and discharge oil smoke swimmingly and can in time close fire-closing valve separation safety check to stop spreading of fire when fire takes place, and reduces the loss that fire causes as much as possible.

Description of drawings

Fig. 1 is the rear view under the normal state of the present utility model;

Fig. 2 is the rear view under the fire condition of the present utility model;

Fig. 3 is the sectional view of Figure 1A-A;

The sectional view of Fig. 4 Fig. 2 B-B;

Fig. 5 is the enlarged view of Fig. 1 C part;

Fig. 6 is the enlarged view of Fig. 2 D part;

Fig. 7 is the enlarged view of Fig. 3 E part;

Fig. 8 is the enlarged view of Fig. 4 F part, (1) valve body wherein, (2) valve block, (3) actuator, (4) separating joint, (5) advance mouth, (6) smoke outlet, (7) fuse sheet A, (8) ready-made hinge, (9) rotor plate, (10) torsion spring, (11) fuse sheet B, (12) fixed page or leaf sheet, (13) moving page or leaf sheet, (14) hinge rotatingshaft, (15) push against post, (16) circular arc ditch, (17) counterweight member, (18) connecting sheet.

Embodiment

The technical solution of the utility model is a kind of separated type fire-preventing check valve, comprises valve body 1, valve block 2, actuator 3 and separating joint 4.Other parts are the metallic material manufacturing and form except that separating joint 4.Wherein valve body 1 has into mouth 5 and smoke outlet 6, and an end of separating joint 4 advances mouth 5 one ends by what each fuse sheet 7 up and down was connected valve body, and the other end is connected with the flexible pipe of kitchen ventilator.After temperature reaches predetermined temperature when fire takes place fuse sheet A7 fusing separately, separating joint 4 separate with valve body 1 thereupon, fire-closing valve and kitchen ventilator is no longer included get in touch, no matter burning things which may cause a fire disaster is from where accomplishing the reliable purpose of burning things which may cause a fire disaster of cutting off effectively.

The bottom that described actuator 4 is in valve body smoke outlet 6 one sides by ready-made hinge 8, rotor plate 9, torsion spring 10, push against post 15 and fuse sheet B11 constitutes, wherein hinge 8 is divided into fixed page or leaf sheet 12, moving page or leaf sheet 13 and hinge rotatingshaft 14 compositions, wherein fixed page or leaf sheet 12 is fixed on the valve body 1 by screw, moving page or leaf sheet 13 can rotate 14 around the hinge axis that is in substantially horizontal, and described hinge rotatingshaft 14 is close on the valve body 1.On moving page or leaf sheet 13, be provided with one and push against post 15 by what screw was made.Rotor plate 9 is in the below of the fixed page or leaf of hinge sheet 12, is roughly circular arc, is provided with a circular hole on the right side, the center of circle of circular arc, is fixed on the valve body 1 by screw, can rotate on the plane that is in perpendicular to horizontal plane.Also be provided with a torsion spring 10 on same screw of rotor plate 9, an end hook of torsion spring 10 is against on the valve body 1 at the other end on the rotor plate 9, is provided with a nut and makes both closely contacts mutually between torsion spring 10 and rotor plate 9.Described fuse sheet B11 is in the below of rotor plate 9, and an end is fixed on the valve body 1, and the other end is fixed on the rotor plate 9.

Described valve block 2 is in valve body smoke outlet 6 one sides, and the base of valve block 2 directly is shelved on the rotatingshaft 14 of hinge.Because hinge rotatingshaft 14 is cylindrical, though described hinge rotatingshaft 14 is close on the valve body, it and 1 of valve body have formed a circular arc ditch 16, the bottom of valve block 2 just is in the circular arc ditch 16, valve block 2 can rotate around hinge rotatingshaft 14, owing to the reason valve block 2 of gravity can only be in extreme lower position in the circular arc ditch 16, just can ensure the optimal seal effect of valve block 2 well in this position, the while also can ensure the flexible unlatching of valve block 2 and close.Advance mouth 5 one sides at valve body and be provided with the counterweight member 17 that matches with valve block 2, described counterweight member 17 is connected with valve block 2 by a connecting sheet 18.The center of gravity of described valve block 2 and counterweight member 17 assemblying bodys is lower than the bottom sides of valve block 2 all the time, can make the flue gas of coming from lampblack exhauster pass through directly to circulate along smokejack behind the safety check up according to this design, the lampblack exhauster smoke evacuation is smooth and easy, discharge capacity is big, resistance is little, noise is low and make.

Under the normal state of non-fire, the moving page or leaf sheet 13 of the hinge of described actuator 3 is roughly parallel to horizontal plane, the top of described rotor plate 9 just props up moving page or leaf sheet 13, the back of the body flue gas face of valve block 2 also just arrives to be located at and pushes against post 15 on the moving page or leaf sheet 13 when valve block 2 is opened to maximum angle, and the post 15 that pushes against of this moment plays spacing effect.When fire takes place, fuse sheet B11 is subjected to thermal release, the twisting force that rotor plate 9 is subjected to torsion spring 10 moves in the direction of the clock rapidly, the position at its top was more and more higher when rotor plate 9 rotated, the moving page or leaf sheet 13 that drives hinge when rotating rotates towards advancing mouth 5 directions, be against tightly on the valve block 2 up to pushing against post 15, play and press valve block 2 sealing of valve is further strengthened, the torsion that no longer needed torsion spring to provide this moment, and just rely on rotor plate 9, moving page or leaf sheet 13, push against post 15, the combine pressure of 2 pairs of valve bodies 1 of valve block of producing of valve block 2 worries that no longer spring Yin Gaowen loses the situation of elastic force.Owing to will guarantee the flexible rotation of rotor plate 9, corresponding screw just can not be twisted too tightly, must leave certain space, interspace in order to reduce influence rotor plate 9 and rotate the time rotate towards clockwise direction, can guarantee that like this rotor plate 9 can not drive corresponding nut and rotate and increase the space when rotating.If this moment, valve was in the state of discharging fume of unlatching, throttle down by force then, owing to have the design that separates connecting head, this moment, separating joint 4 separated with valve body 1, avoided lampblack exhauster can't discharge the state of flue gas because of valve closing, and the significantly situation of difference smoke evacuation also can appear in the smoke evacuation of lampblack exhauster simultaneously, and operator can in time be found.If occurred high-temperature gas in the smokejack, valve is closed by force, but do not cause any loss, do not remove to open kitchen ventilator as usual and can not cause what influence yet and the owner in house realizes that valve has been closed by force kitchen ventilator, smoke evacuation difference only can occur, only need check valve just can handle problems.Because valve block 2 is by with being fixed on the valve body 1 of screw and so on, just can takes off the back to valve block 2 and check valve body and actuator 3 as long as unclamp the corresponding screw of rotor plate, if only need the replacing fuse sheet can continue use just there is anything to damage.

Claims

1. separated type fire-preventing check valve, comprise valve body, valve block, actuator and separating joint, other parts are the metallic material manufacturing and form except that separating joint, wherein valve body has into mouth and smoke outlet, an end that it is characterized in that separating joint advances mouth one end by what each fuse sheet up and down was connected valve body, and the other end is connected with the flexible pipe of kitchen ventilator.

2. a kind of separated type fire-preventing check valve according to claim 1, it is characterized in that described actuator is in the bottom of valve body smoke outlet one side by ready-made hinge, rotor plate, torsion spring, pushing against post and fuse sheet constitutes, wherein hinge is divided into fixed page or leaf sheet and moving page or leaf sheet, wherein fixed page or leaf sheet is fixed on the valve body by screw, moving page or leaf sheet can rotate around the axle that is in substantially horizontal, on moving page or leaf sheet, be provided with one and push against post by what screw was made, rotor plate is in the below of the fixed page or leaf of hinge sheet, be provided with a circular hole, be fixed on the valve body by screw, can rotate on the plane that is in perpendicular to horizontal plane, described rotor plate is roughly circular arc, above same screw of rotor plate, also be provided with a torsion spring, one end hook of torsion spring is against on the valve body at the other end on the rotor plate, is provided with a nut and makes both closely contacts mutually between torsion spring and rotor plate, and described fuse sheet is in the below of rotor plate, one end is fixed on the valve body, and the other end is fixed on the rotor plate.

3. a kind of separated type fire-preventing check valve according to claim 1 is characterized in that described valve block is in valve body smoke outlet one side, and the base of valve block directly is shelved on the rotatingshaft of hinge.

4. a kind of separated type fire-preventing check valve according to claim 1 is characterized in that advancing mouth one side at valve body is provided with the counterweight member that matches with valve block, and described counterweight member is connected with valve block by a connecting sheet.