CN111089177B

CN111089177B - Fire-proof valve

Info

Publication number: CN111089177B
Application number: CN201911371072.6A
Authority: CN
Inventors: 周振厂; 成晓瑞
Original assignee: Henan Huaying Machinery Equipment Co ltd
Current assignee: Henan Huaying Machinery Equipment Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-12-14
Anticipated expiration: 2039-12-27
Also published as: CN111089177A

Abstract

The utility model provides a fire prevention valve, which comprises a valve body, the valve body is ventilation channel's partly, the blade pivot of a plurality of parallels of valve body internal fixation, a blade is fixed in every blade pivot, be ventilation status when these blades are parallel, be encapsulated situation when these blades overlap joint in order, the one end of the overlap joint fixed seal strip of blade, the other end of sealing strip extends and forms the free end to the direction of keeping away from the blade, the sealing strip is the metal forming, when two blade overlap joints, the free end of sealing strip is to its stiff end direction upset, the free end has the certain distance with the stiff end. Compared with the prior art, the invention has the technical effects that the sealing sheet made of metal foil is arranged at the overlapping part of the blades, when the blades need to be closed, the free end is turned to the fixed end by air pressure and is clung to the other blade, thus the sealing is completed, the sealing effect is better, and the metal can resist higher temperature.

Description

Fire-proof valve

Technical Field

The invention relates to the technical field of fire safety equipment, in particular to a fire damper.

Background

For various buildings, especially high-rise buildings, once a fire breaks out, smoke can spread rapidly due to the effect of a hot smoke chimney. Many fire cases show that the smoke is the most main factor influencing the evacuation of people in the fire and the fire rescue and is the most important reason causing the casualties in the fire.

The fire-proof valve is installed on the pipeline of the ventilation equipment, and is opened at ordinary times, when a fire disaster occurs, the fire-proof valve is automatically closed when the temperature of gas in the pipeline reaches a certain stability (for example, 70 ℃), and after the fire disaster occurs, the fire disaster can be prevented from spreading due to the interruption of the circulation of smoke gas.

Therefore, the use of fire dampers and their performance are very important in fire fighting equipment.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: when the fire damper is automatically closed, the fire damper is generally lapped by a plurality of blades, and the gaps between the lapped blades are not sealed well, so that the closing effect cannot be achieved easily, and accidents are caused.

The technical scheme of the invention is as follows:

the utility model provides a fire-proof valve, which comprises a valve body, the valve body is ventilation channel's partly, the blade pivot of a plurality of parallels of valve body internal fixation, a blade is fixed in every blade pivot, be ventilation status when these blades are parallel, be encapsulated situation when these blades overlap joint in order, the one end of the overlap joint fixed seal strip of blade, the other end of sealing strip extends and forms the free end to the direction of keeping away from the blade, the sealing strip is the metal forming, when two blade overlap joints, the free end of sealing strip is to its stiff end direction upset, the free end has the certain distance with the stiff end, part between the free end of sealing strip and the stiff end is to ventilation channel's upper reaches one side evagination, the sealing strip wholly is the shape of falling U this moment, the blade, the sealing strip cooperates the completion sealed together.

The inner wall of the valve body is fixedly provided with the sealing vertical bar, the free end of the sealing strip is contacted with the outer side face of the vertical bar to complete sealing, the part between the free end and the fixed end of the sealing strip protrudes outwards to the upstream side of the ventilation channel, and the sealing strip is integrally in an inverted U shape at the moment.

The one end of blade pivot extends to the valve body outside and connects power slewing mechanism, and the inboard at the valve body is fixed to the other end, and like the picture, the inboard that the tip of blade pivot is fixed to the valve body specifically is: the inner wall of the valve body is fixed with a fixed seat with a convex side surface, a copper sleeve is fixed at a convex part of the fixed seat, the end part of the blade rotating shaft enters the copper sleeve and is not contacted with the inner wall of the valve body, and the copper sleeve is used for rotatably supporting the blade rotating shaft.

The blade is provided with a semicircular bending part, the blade reinforcing sheet is fixed at the semicircular bending part, the blade reinforcing sheet is also provided with a semicircular bending part, and a space between the two semicircular bending parts forms a cavity.

The sealing strip is fixed with the blade specifically does: the end of the sealing strip is clamped between the blade and the blade reinforcing sheet.

The blade rotating shaft comprises a main rotating shaft and a plurality of auxiliary rotating shafts, the end parts of the main rotating shaft and the auxiliary rotating shafts, which are connected with power, extend to the outer side of the valve body, one end of a connecting rod is fixed at the end part of each blade rotating shaft, and the other end of each connecting rod is hinged on the rotating rod through a pin shaft, so that the rotating rod, the connecting rods and the valve body form a multi-constraint parallelogram connecting rod mechanism.

The left end of main pivot extends to the outside and the fixed executor of valve body, valve body internal fixation temperature sensor, and the executor is connected to the temperature sensor electricity, when temperature sensor detected the temperature and is greater than the extreme value, gives the executor signal, and the executor drives main pivot rotation 90, relies on the dwang to drive the counter shaft and main pivot synchronous revolution, accomplishes sealedly.

The connecting rod at the right end of the main rotating shaft or/and the auxiliary rotating shaft extends in the opposite direction to form an extending part, one end of a first tension spring is fixed at the end part of the extending part, the other end of the first tension spring is fixed on a spring base, and the spring base is fixed on the outer wall of the valve body.

One end of the connecting sheet is fixed on one of the auxiliary rotating shafts, the other end of the connecting sheet is fixed on one end of a second tension spring, the other end of the second tension spring is fixed on a spring base, and the spring base is fixed on the outer wall of the valve body.

Compared with the prior art, the invention has the technical effects that the sealing sheet made of metal foil is arranged at the overlapping part of the blades, when the blades need to be closed, the free end is turned to the fixed end by air pressure and is clung to the other blade, thus the sealing is completed, the sealing effect is better, and the metal can resist higher temperature.

Drawings

FIG. 1 is a schematic of the present invention.

Fig. 2 is a left side schematic view of fig. 1.

Fig. 3 is a right-side schematic view of fig. 1.

Fig. 4 is a schematic cross-sectional view taken at AA in fig. 1 (blade sealing state).

Fig. 5 is a schematic cross-sectional view at AA in fig. 1 (blade ventilation state).

Fig. 6 is an enlarged schematic view of the overlapping portion of the two vanes in the sealing state of the vanes (at this time, the sealing sheet is not turned over yet).

Fig. 7 is an enlarged view of the junction between the two blades in the sealing state (the sealing plate is turned upside down).

FIG. 8 is an enlarged view of the vane and seal rail in the vane sealing condition.

Fig. 9 is a schematic sectional view of a vane rotary shaft.

Fig. 10 is an enlarged schematic view of the left end in the drawing.

Fig. 11 is an enlarged schematic view of a blade reinforcing sheet.

Detailed Description

As shown in fig. 1-3, a fire damper includes a valve body 1, the valve body 1 is a part of a ventilation channel, and its air intake end is provided with a side wind screen 2 and an end spring leaf wind screen 4, the end spring leaf wind screen 4 is fixed on the valve body 1 through an end wind screen bracket 3, and the side wind screen 2 and the end spring leaf wind screen 4 are both prior art, and are not described herein.

As shown in fig. 4 to 5, a plurality of parallel vane rotating shafts are fixed in the valve body 1, each vane rotating shaft is fixed with one vane 7, the ventilation state is realized when the vanes 7 are parallel, and the sealing state is realized when the vanes 7 are sequentially overlapped.

As shown in fig. 6 to 7, one end of the sealing strip 16 is fixed at the overlapping position of the blades 7, the other end of the sealing strip 16 extends in a direction away from the blades 7 to form a free end 161, the sealing strip 16 is a metal foil, when two blades 7 are overlapped, as shown in fig. 7, the sealing strip is blown by gas pressure, the free end 161 of the sealing strip 16 is turned over towards the fixed end thereof, the metal foil has certain elasticity, the free end 161 is at a certain distance from the fixed end, at this time, the free end 161 contacts the other blade 7 to complete sealing, the part between the free end 161 and the fixed end of the sealing strip 16 protrudes towards the upstream side of the ventilation channel, the sealing strip 16 is overall in an inverted U shape at this time, due to its own properties, the sealing strip can resist the pressure difference between the two ends, and is relatively stable, so that the blades 7 and the sealing strip 16 are matched together to complete sealing.

As shown in fig. 8, in order to provide a good sealing effect between the vane 7 and the inner wall of the valve body 1, the inner wall of the valve body 1 fixes the sealing vertical bar 31, the free end 161 of the sealing bar 16 contacts the outer side surface of the vertical bar 31 to complete the sealing, the portion between the free end 161 and the fixed end of the sealing bar 16 protrudes to the upstream side of the ventilation channel, and the sealing bar 16 is in an inverted U shape. The sealing principle is the same as before.

In fact, the gas pressure difference between the two sides of the sealing surface (including the blade 7 and the sealing strip 16) is relatively large, the blade 7 continuously vibrates, and even then, the convex structure of the sealing strip is relatively stable,

in fig. 6-8, the distance of the gap between the two blades 7 is actually very small, and the sealing strip 16 is also relatively thin, and for the sake of clarity of the sealing strip 16, the gap between the two blades 7 is drawn comparatively large, and the sealing strip 16 is also drawn comparatively thick.

As shown in fig. 9-10, one end of the vane rotary shaft extends to the outside of the valve body 1 to connect with the power rotating mechanism, and the other end is fixed at the inside of the valve body 1, as shown in fig. 10, the fixing of the end of the vane rotary shaft to the inside of the valve body 1 specifically includes: the inner wall of the valve body 1 is fixed with a fixing seat 181 with a convex side surface, a copper sleeve 18 is fixed at the convex part of the fixing seat 181, the end part of the blade rotating shaft enters the copper sleeve 18 and is not contacted with the inner wall of the valve body 1, the copper sleeve 18 is a rotary support of the blade rotating shaft, a protection cover 182 is arranged at the outer side of the copper sleeve 18, and the protection cover 182 is fixed at the convex part of the fixing seat 181. The structure can prevent the poor sealing effect caused by the deformation of the valve body 1.

As shown in fig. 11, in order to prevent the blade 7 from being deformed, the blade 7 is provided with a semicircular bent portion 71 where the blade reinforcing piece 17 is fixed, the blade reinforcing piece 17 is also provided with a semicircular bent portion 71, and a space between the two semicircular bent portions 71 forms a cavity 72.

As shown in fig. 11, the fixing of the sealing strip 16 and the blade 7 is specifically as follows: the end of the sealing strip 16 is clamped between the blade 7 and the blade reinforcing sheet 17, the sealing strip 16 is thinner, and the design is firmer.

In order to enable the vane rotary shafts to rotate simultaneously, the vane rotary shafts comprise a main rotary shaft 5 and a plurality of auxiliary rotary shafts 6, the ends of the main rotary shaft and the auxiliary rotary shafts connected with power extend to the outer side (the right side of fig. 1) of the valve body 1, see fig. 3, one end of a connecting rod 131 is fixed at the end of each vane rotary shaft, and the other end of the connecting rod 131 is hinged on a rotary rod 13 through a pin shaft 14, so that the rotary rod 13, the plurality of connecting rods 131 and the valve body 1 form a multi-constraint parallelogram linkage mechanism;

simultaneously, the left end of main rotating shaft 5 extends to the outside of valve body 1 and fixed actuator 9 (if make things convenient for label manufacturer and model once), valve body 1 internal fixation temperature sensor 8, and temperature sensor 8 electricity is connected actuator 9, and when temperature sensor 8 detected the temperature and is greater than the extreme value, give actuator 9 signal, actuator 9 drove main rotating shaft 5 and rotates 90, relies on dwang 13 to drive auxiliary rotating shaft 6 and main rotating shaft 5 synchronous revolution, accomplishes sealedly.

For stability, the link 131 at the right end of the main rotating shaft 5 or/and the auxiliary rotating shaft 6 extends in the opposite direction to form an extension 132, one end of the first extension spring 15 is fixed to the end of the extension 132, the other end of the first extension spring 15 is fixed to the spring base 10, and the spring base 10 is fixed to the outer wall of the valve body 1.

For stability, one of the auxiliary rotating shafts 6 fixes one end of a connecting piece 12, the other end of the connecting piece 12 fixes one end of a second tension spring 11, the other end of the second tension spring 11 is fixed on a spring base 10, and the spring base 10 is fixed on the outer wall of the valve body 1.

Through the tension spring, the vibration of the speed-reducing rotating rod 13 can be reduced when the main rotating shaft 5 or/and the auxiliary rotating shaft 6 rotate and stop, and sealing is facilitated.

The working principle is as follows:

when normal ventilation is performed, the actuator 9 controls the main rotating shaft 5 and drives the auxiliary rotating shaft 6 to rotate through the rotating rod 13, so that the blades 7 are in a parallel state, and the ventilation is kept as shown in fig. 5.

When the temperature is higher, the temperature sensor 8 sends a signal to the actuator 9, the actuator 9 controls the main rotating shaft 5 and drives the auxiliary rotating shaft 6 to rotate through the rotating rod 13, so that the blades 7 are in a lap joint state, and as shown in fig. 4, the ventilation channel is sealed and fireproof is carried out.

Other content participates in the prior art.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.

Claims

1. A fire damper, includes valve body (1), and valve body (1) is a part of ventilation channel, and a plurality of parallel blade pivot of valve body (1) internal fixation, a blade (7) are fixed to every blade pivot, are ventilation state when these blades (7) are parallel, are sealed state when these blades (7) overlap in order, its characterized in that: one end of a sealing strip (16) is fixed at the lap joint of the blades (7), the other end of the sealing strip (16) extends in the direction far away from the blades (7) to form a free end (161), the sealing strip (16) is made of metal foil, when the two blades (7) are lapped, the sealing strip is blown by gas pressure, the free end (161) of the sealing strip (16) is overturned towards the fixed end direction of the sealing strip, a certain distance is reserved between the free end (161) and the fixed end, the part between the free end (161) and the fixed end of the sealing strip (16) protrudes outwards towards the upstream side of the ventilation channel, the sealing strip (16) is integrally in an inverted U shape at the moment, and the blades (7) and the sealing strip (16) are matched together to complete sealing.

2. A fire damper as claimed in claim 1, wherein: a sealing vertical bar (31) is fixed on the inner wall of the valve body (1), the free end (161) of the sealing bar (16) contacts the outer side surface of the vertical bar (31) to complete sealing, at the moment, the part between the free end (161) and the fixed end of the sealing bar (16) protrudes outwards to the upstream side of the ventilation channel, and the sealing bar (16) is integrally in an inverted U shape at the moment.

3. A fire damper as claimed in claim 1, wherein: the one end of blade pivot extends to the valve body (1) outside and connects power slewing mechanism, and the other end is fixed in the inboard of valve body (1), and the tip of blade pivot is fixed specifically to the inboard of valve body (1) and is: the inner wall of the valve body (1) is fixed with a fixing seat (181) with a convex side surface, a copper sleeve (18) is fixed at the convex part of the fixing seat (181), the end part of the blade rotating shaft enters the copper sleeve (18) and is not contacted with the inner wall of the valve body (1), and the copper sleeve (18) is used for rotatably supporting the blade rotating shaft.

4. A fire damper as claimed in claim 1, wherein: the blade (7) is provided with a semicircular bending part (71) where the blade reinforcing piece (17) is fixed, the blade reinforcing piece (17) is also provided with a semicircular bending part (71), and a space between the two semicircular bending parts (71) forms a cavity (72).

5. A fire damper as claimed in claim 4, wherein: the fixing of the sealing strip (16) and the blade (7) is as follows: the end of the sealing strip (16) is clamped between the blade (7) and the blade reinforcing sheet (17).

6. A fire damper as claimed in claim 1, wherein: the blade rotating shaft comprises a main rotating shaft (5) and a plurality of auxiliary rotating shafts (6), the end parts of the main rotating shaft and the auxiliary rotating shafts, which are connected with power, extend to the outer side of the valve body (1), one end of a connecting rod (131) is fixed at the end part of each blade rotating shaft, and the other end of the connecting rod (131) is hinged on the rotating rod (13) through a pin shaft (14), so that the rotating rod (13), the connecting rods (131) and the valve body (1) form a multi-constraint parallelogram connecting rod mechanism.

7. A fire damper as claimed in claim 6, wherein: the left end of main rotating shaft (5) extends to the outside of valve body (1) and fixes executor (9), valve body (1) internal fixation temperature sensor (8), executor (9) are connected to temperature sensor (8) electricity, when temperature sensor (8) detected the temperature and is greater than the extreme value, give executor (9) signal, executor (9) drive main rotating shaft (5) rotation (90) °, rely on dwang (13) to drive vice pivot (6) and main rotating shaft (5) synchronous revolution, accomplish and seal.

8. A fire damper as claimed in claim 6, wherein: the connecting rod (131) at the right end of the main rotating shaft (5) or/and the auxiliary rotating shaft (6) extends in the opposite direction to form an extension part (132), one end of a first tension spring (15) is fixed at the end part of the extension part (132), the other end of the first tension spring (15) is fixed on a spring base (10), and the spring base (10) is fixed on the outer wall of the valve body (1).

9. A fire damper as claimed in claim 6, wherein: one end of a connecting sheet (12) is fixed on one of the auxiliary rotating shafts (6), one end of a second tension spring (11) is fixed on the other end of the connecting sheet (12), the other end of the second tension spring (11) is fixed on a spring base (10), and the spring base (10) is fixed on the outer wall of the valve body (1).