CN215763505U - Fire control is with safe type high temperature resistant normal close smoke damper - Google Patents

Abstract

The utility model discloses a fire-fighting safety high-temperature-resistant normally-closed smoke exhaust valve, wherein a plurality of shaft sleeves are vertically and uniformly and rotatably arranged in a valve cavity of a valve body, blades are symmetrically arranged on the shaft sleeves, the blades on adjacent shaft sleeves are mutually abutted to tightly seal the valve cavity, a valve rod is slidably arranged in the shaft sleeves through a sliding groove and sliding block structure, two ends of one valve rod extend out of the shaft sleeves, a temperature-triggered torsion mechanism and a limiting tension mechanism which are positioned on the outer side wall of the valve body are respectively arranged at two extending ends of the valve rod, the temperature-triggered torsion mechanism is positioned at the top of the valve rod, and the output end of an electromagnetic actuator is meshed with the temperature-triggered torsion mechanism. This high reliability normal close also can trigger mechanical structure through external environment temperature and open the smoke damper when the automatically controlled start-stop mechanism of external world breaks down or damages in conflagration or high temperature environment, can not interfere the state after normally opening in addition, has greatly improved fire extinguishing system's security, improves people's safety and property safety.

Description

Fire control is with safe type high temperature resistant normal close smoke damper

Technical Field

The utility model relates to the technical field of valve equipment, in particular to a safety high-temperature-resistant normally-closed smoke exhaust valve for fire fighting.

Background

The valve is installed at the end part (smoke suction inlet) of each branch pipe of the mechanical smoke exhaust system, is closed at ordinary times and meets the requirement of air leakage, and is manually and electrically opened to play a smoke exhaust role in a fire disaster or when smoke is required to be exhausted. The valve with the decorative opening or the decorative treatment is called a smoke exhaust opening. The general building smoke exhausting system needs personnel to confirm and operate, so the smoke exhausting valve has no temperature sensing device. Typically in the upper portion of a building space or in the area of a suspended ceiling. The smoke exhaust valve can be interlocked with a fire detector, particularly the smoke detector of the fire, and the smoke exhaust valve is opened by detecting smoke generated in the initial stage of the fire to exhaust smoke and becomes an automatic valve driven by a motor or an electromagnetic mechanism.

The smoke exhaust valve is arranged at a smoke inlet of the smoke exhaust pipeline and is normally closed at ordinary times, so that certain tightness of the smoke exhaust pipeline needs to be ensured, sundries, dust and rats are prevented from entering the smoke exhaust pipeline, certain high temperature needs to be borne during fire, and the high temperature is blocked by fire protection at least at 280 ℃. However, when the smoke exhaust valve is used, the smoke exhaust valve may face the influence of some external factors, for example, sudden instantaneous fire, such as the fire of flammable and explosive objects, rapid spreading, resulting in the power failure or failure of the automatic opening and closing mechanism controlled by electromagnetism, etc., or the automatic opening and closing mechanism may be damaged by rats, which may cause the safety hazard that the smoke exhaust valve cannot be manually opened in time or at all when the fire occurs instantaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a safety high-temperature-resistant normally-closed smoke exhaust valve for fire protection, and aims to solve the problem that when the smoke exhaust valve is used, an automatic opening and closing mechanism controlled by electromagnetism and the like is powered off or fails to be timely and cannot be manually opened, so that potential safety hazards are caused.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a fire-fighting high-reliability normally-closed smoke exhaust valve, which comprises a valve body, a plurality of valve rods, blades, a connecting rod and an electromagnetic actuator, a plurality of shaft sleeves are vertically and uniformly and rotatably arranged in a valve cavity of the valve body, the blades are symmetrically arranged on the shaft sleeves, the blades on the adjacent shaft sleeves are mutually abutted and seal the valve cavity, the valve rod is slidably arranged in the shaft sleeves through a sliding chute and sliding block structure, wherein two ends of one valve rod extend out of the shaft sleeve, and the two extended ends of the valve rod are respectively provided with a temperature-triggered torsion mechanism and a limiting tension mechanism which are positioned on the outer side wall of the valve body, the temperature-triggered torsion mechanism is positioned at the top of the valve rod, the output end of the electromagnetic actuator is meshed with the outer side wall of the temperature-triggered torsion mechanism, the connecting rod is rotatably connected with one end of each shaft sleeve through a hinge piece and is positioned in the side wall of the valve body.

The further technical scheme is as follows: the temperature triggers torsion mechanism includes ring cover, spiral cover, foraminiferous baffle and normal atmospheric temperature solid-state stopping material, the both ends of ring cover are sealed to be installed the spiral cover, the baffle horizontal installation in the ring cover, normal atmospheric temperature solid-state stopping material is installed on the baffle, the tip of valve rod is provided with first fixture block and cylinder, first fixture block is in the stopper at top in the ring cover, cylinder slidable mounting is in the arc wall inslot at top in the ring cover.

The further technical scheme is as follows: and the rotary cover at the bottom of the ring sleeve is rotatably arranged at the outer top of the valve body through a thrust ball bearing.

The further technical scheme is as follows: the outer side wall of the ring sleeve is meshed with the output end of the electromagnetic actuator.

The further technical scheme is as follows: spacing straining device includes fixed cover and extension spring of single face open-ended, the opening side of fixed cover is installed on the lateral wall of valve body, the tip of valve rod rotates to be installed in the fixed cover, the terminal surface of valve rod with the underrun of fixed cover the extension spring is connected, the tip of valve rod is provided with the second fixture block, be provided with on the inside wall of fixed cover with second fixture block assorted backstop piece.

The further technical scheme is as follows: the stop block is an L-shaped baffle plate.

The further technical scheme is as follows: the normal-temperature solid filler is hot melt adhesive or solid paraffin, and the upper surface of the normal-temperature solid filler is provided with an anti-sinking sheet for the first clamping block.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a safety high-temperature-resistant normally closed smoke exhaust valve for fire fighting, which is characterized in that a temperature trigger torsion mechanism and a limit tension mechanism are added on the basis of the traditional smoke exhaust valve, the temperature trigger torsion mechanism can be triggered according to the change of the external temperature, and then the limit tension mechanism is linked, even if an external electric control opening and closing mechanism of the smoke exhaust valve is broken down or damaged, a mechanical structure can be triggered by the external environment temperature in a fire or high-temperature environment to open the smoke exhaust valve, so that the safety and the reliability of the valve are improved, the temperature trigger torsion mechanism and the limit tension mechanism of the valve can not interfere with the normally opened state, namely the smoke exhaust valve can not change the opened state of the smoke exhaust valve in the face of the temperature change after being opened by a manual or electric control opening and closing mechanism, so that the safety of a fire fighting system is greatly improved, improve the safety of people and property.

Drawings

FIG. 1 is a schematic structural view of a fire-fighting safety type high temperature resistant normally closed smoke exhaust valve.

Fig. 2 is a schematic view of another view angle of fig. 1 according to the present invention.

FIG. 3 is a schematic structural view of the temperature triggered torsion mechanism and the limit tension mechanism of FIG. 1 according to the present invention.

FIG. 4 is a schematic view of the stopping block of FIG. 3 according to the present invention.

Reference numerals: 1. a valve body; 2. a valve stem; 21. a first clamping block; 22. a cylinder; 23. a second fixture block; 3. a blade; 4. a connecting rod; 5. an electromagnetic actuator; 6. a shaft sleeve; 7. a temperature triggered torsion mechanism; 71. sleeving a ring; 711. a limiting block; 712. an arc-shaped wall groove; 72. screwing a cover; 73. a partition plate; 74. normal temperature solid filling material; 8. a limiting and tensioning mechanism; 81. fixing a sleeve; 811. a stop block; 82. a tension spring; 9. a hinged flap.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

in the embodiment, as shown in fig. 1 and fig. 2, a safety high-temperature resistant normally-closed smoke exhaust valve for fire protection has the following structure: a valve body 1, a plurality of valve rods 2, blades 3, a connecting rod 4, an electromagnetic actuator 5 and the like in the normally closed smoke exhaust valve are all components of a traditional smoke exhaust valve, a plurality of shaft sleeves 6 are vertically arranged and uniformly rotatably installed in a valve cavity of the valve body 1, the blades 3 are symmetrically installed on the shaft sleeves 6, the blades 3 on the adjacent shaft sleeves 6 are mutually abutted and seal the valve cavity, in order to improve the sealing property, fireproof cushion materials can be arranged on the adjacent surfaces of the blades 3, the valve rods 2 are slidably installed in the shaft sleeves 6 through a chute and slider structure, namely, partial sliders (strips) are arranged on the outer peripheral surface of each valve rod 2 along the axial direction of the valve rod, chutes for sliding the sliders (strips) are arranged on the inner annular surface of each shaft sleeve 6, two ends of one valve rod 2 (hereinafter defined as a main valve rod) extend out of the shaft sleeves 6, and two ends of the main valve rod are respectively provided with a temperature-triggered torsion mechanism 7 and a limiting tension mechanism 8 which are positioned on the outer side wall of the valve body 1, the temperature triggers torsion mechanism 7 and is located the valve rod 2 top, and electromagnetic actuator 5's output meshes with the lateral wall of temperature triggers torsion mechanism 7, and one side and the one end of a plurality of articulated pieces 9 of connecting rod 4 rotate to be connected, and the other end of a plurality of articulated pieces 9 rotates one by one with the one end of axle sleeve 6 to be connected, and is located the lateral wall intracavity of valve body 1.

The working process of the utility model is as follows: this high reliability normally closed smoke exhaust valve, effectively solve external automatically controlled headstock gear and damage or proruption condition of a fire, when unable manual opening, can be through the change of temperature in the environment, trigger the temperature and trigger torsion mechanism 7, the main valve pole that makes twists reverse, drive axle sleeve 6 rotates, automatically, open the valve, in normal atmospheric temperature environment, can not temperature trigger torsion mechanism 7, completely through automatically controlled headstock gear or manual opening and close the smoke exhaust valve promptly, and spacing straining device 8 triggers torsion mechanism 7 linkage setting with the temperature, on the one hand, cooperation temperature triggers torsion mechanism 7 and makes the valve open, on the other hand, can play the effect of safety cock, promptly: the smoke exhaust valve can be opened and closed through an electric control opening and closing mechanism or manually, even if the temperature triggers the temperature triggering torsion mechanism 7 in the opening state, the opening state of the valve can not be changed under the action of the safety plug of the limiting tensioning mechanism 8, and the reliable and safe use of the valve is ensured.

The normally closed smoke exhaust valve is improved on the basis of the traditional smoke exhaust valve, the temperature triggering torsion mechanism and the limiting tensioning mechanism are additionally arranged, the temperature triggering torsion mechanism can be triggered according to the change of the external temperature, then the limiting tensioning mechanism is linked, even if the external electric control opening and closing mechanism of the smoke exhaust valve breaks down or is damaged, the smoke exhaust valve can be opened through the external environment temperature triggering mechanical structure in a fire disaster or high-temperature environment, the safety and the reliability of the use of the valve are improved, the temperature triggering torsion mechanism and the limiting tensioning mechanism of the valve cannot interfere with the normally opened state, namely, after the smoke exhaust valve is opened through a manual or electric control opening and closing mechanism, the opening state of the smoke exhaust valve cannot be changed along with the change of the temperature, the safety of a fire protection system is greatly improved, and the safety of people and property safety are improved.

Example two:

in the embodiment shown in fig. 3, the temperature-triggered torsion mechanism 7 includes a ring sleeve 71, a screw cap 72, a partition 73 with holes, and a normal temperature solid filling material 74, wherein the screw caps 72 are hermetically installed at two ends of the ring sleeve 71, the partition 73 is horizontally installed in the ring sleeve 71, the normal temperature solid filling material 74 is installed on the partition 73, the end of the valve rod 2 is provided with a first block 21 and a column 22, the first block 21 is clamped in a limit block 711 at the top inside the ring sleeve 71, and the column 22 is slidably installed in an arc-shaped wall groove 712 at the top inside the ring sleeve 71. The outer side wall of the ring sleeve 71 is engaged with the output end of the electromagnetic actuator 5.

Under the tension of the limiting and tensioning mechanism 8, once the normal temperature solid filler 74 melts (a melting point or softening material at about 70 ℃ or 280 ℃ can be selected according to the requirement of a fire fighting system, and other melting point or softening materials required by other temperatures can be selected, although a memory metal, high temperature contraction and low temperature expansion can be considered under the permission of increasing the cost), the first clamping block 21 on the valve rod 2 loses the supporting force and gradually breaks away from the limitation of the limiting block 711, and the valve rod 2 will make the cylinder 22 on the valve rod 2 move under the limit of the arc wall groove 712 at the top in the ring sleeve 71 under the action of the pulling force, namely, the valve rod rotates along with the descending, and then the shaft sleeve 6 is driven to rotate to open the valve, after the valve rod 2 falls on the ring sleeve 71 for a distance, the column 22 on the valve rod 2 is also separated from the arc-shaped wall groove 712, and the valve rod 2 and the ring sleeve 71 do not move in an interference mode respectively; at the same time, the partition plate 73 can limit the descending of the valve rod 2; in addition, in order to prevent the rotation of the ring sleeve 71, the self-locking function of the electromagnetic opening and closing mechanism can be utilized, and it is worth mentioning that: under normal temperature environment, the normal temperature solid filler 74 is solid to play a supporting role, the first fixture block 21 on the valve rod 2 is positioned in the limiting block 711 at the inner top of the ring sleeve 71, and rotates along with the rotation of the external electric control opening and closing mechanism or the manual driving ring sleeve 71, which is equivalent to a normal smoke exhaust valve.

Note that: considering later-stage manual closing, a second limiting block which is located below the limiting block 711 and is crossed with the limiting block can be arranged at the inner bottom of the ring sleeve 71, and the second limiting block is used for clamping the first clamping block 21 on the valve rod 2, so that an external electronic control opening and closing mechanism or a manual valve closing mechanism is facilitated.

The cap 72 is screwed to reset and replace the normal temperature solid filler 74 after the temperature is triggered to trigger the torsion mechanism 7.

Preferably, a rotary cover 72 at the bottom of the ring sleeve 71 is rotatably mounted on the outer top of the valve body 1 through a thrust ball bearing.

Improve the rotation performance and reduce the friction.

Example three:

in this embodiment, as shown in fig. 4, the limiting tensioning mechanism 8 includes a fixing sleeve 81 with a single-side opening and a tension spring 82, the opening side of the fixing sleeve 81 is installed on the outer side wall of the valve body 1, the end of the valve rod 2 is rotatably installed in the fixing sleeve 81, the end surface of the valve rod 2 is connected with the bottom surface of the fixing sleeve 81 through the tension spring 82, the end of the valve rod 2 is provided with a second clamping block 23, and the inner side wall of the fixing sleeve 81 is provided with a stop block 811 matched with the second clamping block 23.

This spacing straining device 8 plays two roles: one function is to link with the temperature trigger torsion mechanism, so as to play a role of a safety plug, namely after the valve can be normally opened by an external electric control opening and closing mechanism or manpower, the second fixture block 23 at the end part (bottom part) of the valve rod 2 can rotate to the stop block 811, so as to play a role of fixing and limiting the valve rod 2, even if the external temperature changes to trigger the temperature trigger torsion mechanism 7, the valve rod 2 can not descend, the rotation of the shaft sleeve 6 can not be triggered, and the opening state of the valve can not be influenced; the other function is that: the temperature-triggered torsion mechanism 7 is provided with pulling force, when an external electric control opening and closing mechanism or a manual work cannot normally open the valve, the external temperature changes to trigger the temperature-triggered torsion mechanism 7, and the tension spring 82 provides power to drive the valve rod 2 to rotate to open the valve.

Preferably: the stopper 811 is an L-shaped stopper.

When the valve is normally opened under the action of an external electric control opening and closing mechanism or manpower, the second clamping block 23 on the valve rod 2 is located on the L-shaped retaining sheet and is propped tightly; when the valve cannot be normally opened under the action of an external electric control opening and closing mechanism or manual work, after the temperature triggering torsion mechanism 7 is triggered, the second clamping block 23 on the valve rod 2 rotates and then is positioned under the L-shaped retaining sheet, and the abnormal opening of the valve is completed.

Preferably: the normal temperature solid filler 74 is hot melt adhesive or solid paraffin, and the upper surface of the normal temperature solid filler 74 is provided with an anti-sinking sheet for the first fixture block 21, so that the anti-sinking sheet prevents the first fixture block 21 on the valve rod 2 from being changed along with time and falling into the normal temperature solid filler 74 at normal ambient temperature, and plays a supporting role.

Although the utility model has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (7)

1. The utility model provides a fire control is with high temperature resistant normal close smoke damper of safe type which characterized in that: comprises a valve body (1), a plurality of valve rods (2), blades (3), a connecting rod (4) and an electromagnetic actuator (5), wherein a plurality of shaft sleeves (6) are vertically arranged and uniformly installed in a valve cavity of the valve body (1) in a rotating manner, the blades (3) are symmetrically installed on the shaft sleeves (6) and are adjacent to each other, the blades (3) on the shaft sleeves (6) are mutually abutted and sealed, the valve cavity is formed in a manner that the valve rods (2) are slidably installed in the shaft sleeves (6) through a sliding chute and sliding block structure, the shaft sleeves (6) extend out from two ends of one of the valve rods (2), the extending ends of the valve rods (2) are respectively provided with a temperature-triggered torsion mechanism (7) and a limiting tension mechanism (8) which are positioned on the outer side wall of the valve body (1), the temperature-triggered torsion mechanism (7) is positioned on the top of the valve rod (2), the output end of the electromagnetic actuator (5) is meshed with the outer side wall of the temperature-triggered torsion mechanism (7), the connecting rod (4) is rotatably connected with one end of each shaft sleeve (6) through a hinge piece (9) and is positioned in the side wall of the valve body (1).

2. The fire-fighting safety high-temperature-resistant normally-closed smoke exhaust valve as claimed in claim 1, wherein: temperature triggers torsion mechanism (7) is including ring cover (71), spiral cover (72), foraminiferous baffle (73) and normal atmospheric temperature solid-state stopping material (74), the both ends of ring cover (71) are sealed to be installed spiral cover (72), baffle (73) horizontal installation be in ring cover (71), normal atmospheric temperature solid-state stopping material (74) are installed on baffle (73), the tip of valve rod (2) is provided with first fixture block (21) and cylinder (22), first fixture block (21) block is in stopper (711) at top in ring cover (71), cylinder (22) slidable mounting be in arc wall groove (712) at top in ring cover (71).

3. The fire-fighting safety high-temperature-resistant normally-closed smoke exhaust valve as claimed in claim 2, wherein: and a rotary cover (72) at the bottom of the ring sleeve (71) is rotatably arranged at the outer top of the valve body (1) through a thrust ball bearing.

4. The fire-fighting safety high-temperature-resistant normally-closed smoke exhaust valve as claimed in claim 2, wherein: the outer side wall of the ring sleeve (71) is meshed with the output end of the electromagnetic actuator (5).

5. The fire-fighting safety high-temperature-resistant normally-closed smoke exhaust valve as claimed in claim 1, wherein: spacing straining device (8) are including fixed cover (81) and extension spring (82) of single face open-ended, the opening side of fixed cover (81) is installed on the lateral wall of valve body (1), the tip of valve rod (2) is rotated and is installed in fixed cover (81), the terminal surface of valve rod (2) with the underrun of fixed cover (81) extension spring (82) are connected, the tip of valve rod (2) is provided with second fixture block (23), be provided with on the inside wall of fixed cover (81) with second fixture block (23) assorted backstop piece (811).

6. The fire-fighting safety high-temperature-resistant normally-closed smoke exhaust valve as claimed in claim 5, wherein: the stop block (811) is an L-shaped baffle.

7. The fire-fighting safety high-temperature-resistant normally-closed smoke exhaust valve as claimed in claim 2, wherein: the normal-temperature solid filling material (74) is hot melt adhesive or solid paraffin, and an anti-sinking sheet for the first fixture block (21) is arranged on the upper surface of the normal-temperature solid filling material (74).

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