CN212928895U - Novel fire prevention smoke damper - Google Patents

Abstract

The utility model discloses a novel fire prevention smoke damper, include: the valve comprises a valve main body, a blade shaft mounting platform, blade shaft mounting holes, a blade shaft and a fireproof blade, wherein the blade shaft penetrates through the central line of the fireproof blade, the central positions of two symmetrical side surfaces of the valve main body are bent inwards to form the blade shaft mounting platform, the blade shaft mounting platforms on two sides are symmetrical about the central axis of the valve main body, the circle centers of the blade shaft mounting holes in the blade shaft mounting platforms are equidistantly arranged on the same straight line, and the straight line is perpendicular to the central axis of the valve main body in space. The utility model discloses a bend inwards the center of the both sides face of valve main part symmetry to form blade axle mounting platform, make blade mounting platform and valve main part be the integral structure, the seam of avoiding appearing the junction has the unusual situation that the dense cigarette of high temperature leaked, prevents effectively that the intensity of a fire from stretching, improves the security and the seal of fire prevention smoke damper.

Description

Novel fire prevention smoke damper

Technical Field

The utility model relates to a fire safety equipment field especially relates to a novel fire prevention smoke damper.

Background

The fire-proof smoke exhaust valve is a normally closed valve. When a fire disaster dangerous situation occurs, the fire alarm control system sends a fire protection linkage signal to control equipment of the fire protection smoke exhaust valve, the control equipment outputs a signal to a power mechanism of the fire protection smoke exhaust valve after receiving the linkage signal, so that a blade shaft of the smoke exhaust valve drives blades to rotate, a smoke exhaust pipe connected with the fire protection smoke exhaust valve is communicated with the external environment, dense smoke in a fire scene is exhausted to reduce the indoor smoke concentration, and time is won for evacuation of personnel in the fire scene and rescue of rescue personnel; when the temperature in the fire scene is higher than 280 ℃, the smoke discharging work is meaningless, the dense smoke temperature is higher and has flames, and if the dense smoke is discharged from the fire scene, the fire is easy to spread, so that the power mechanism controls the blade shaft to drive the blades to reset, the fireproof smoke discharging valve is closed, and the spread and expansion of the fire are avoided. Therefore, the requirement on the tightness of the fireproof smoke exhaust valve is high.

At present, a blade shaft support and a valve main body of the fireproof smoke exhaust valve on the market are of a split structure, and the blade shaft support is fixed on the valve main body in a welding mode. Gaps may exist in the arrangement mode, when the temperature of a fire scene is higher than 280 ℃, the risk of smoke leakage exists, high-temperature dense smoke easily ignites inflammable matters in the external environment, the fire is spread, and the disaster area is enlarged.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, providing a novel fire prevention smoke damper, prevent to have the risk that dense cigarette spills at the closed condition.

The technical scheme of the utility model as follows: provide a novel fire prevention smoke damper, include: the valve main part, pass the blade axle and the cover of valve main part are located the epaxial fire prevention blade of blade, the blade axle passes fire prevention blade's central line, the central point of the both sides face of valve main part symmetry puts the inward bending and forms blade axle mounting platform, and both sides blade axle mounting platform is symmetrical about the center pin of valve main part, be provided with a plurality of blade mounting holes on the blade axle mounting platform, the centre of a circle equidistance of the blade axle mounting hole on the blade axle mounting platform sets up on same straight line, the straight line is perpendicular in the space with the center pin of valve main part, the both ends that set up the position correspondence blade axle of blade mounting hole.

Furthermore, a power mechanism is arranged on the outer side of the valve main body, the power mechanism drives the fireproof blades to rotate around the blade shafts, and the power mechanism is connected with a control device.

Furthermore, a handle is arranged on the power mechanism, and the handle is pulled to drive the fireproof blades to rotate around the blade shafts.

Further, the distance between two adjacent blade shaft mounting holes is smaller than the width of the fireproof blade.

Furthermore, a shaft seal is arranged between the blade shaft and the blade shaft mounting hole, and the shaft seal is sleeved on the blade shaft.

Furthermore, square flange plates are arranged at two ends of the valve main body.

Furthermore, the valve main body and the fireproof blades are made of memory alloy materials.

Adopt above-mentioned scheme, the utility model discloses a bend inwards the center with the both sides face of valve main part symmetry to form blade axle mounting platform, make blade mounting platform and valve main part structure as an organic whole, the seam of avoiding appearing the junction has the abnormal conditions of high temperature dense smoke leakage, prevents effectively that the intensity of a fire from stretching, improves the security and the seal of fire prevention smoke damper.

Drawings

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

Fig. 2 is a right side view of the present invention.

Fig. 3 is an enlarged schematic view of a point a in fig. 1.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the present invention provides a novel fire-proof smoke exhaust valve, which includes: the fire-proof valve comprises a valve body 1, a blade shaft 2 penetrating through the valve body 1 and a fire-proof blade 21 sleeved on the blade shaft 2. The blade shaft 2 passes through the centre line of the fire protection blade 21. The center positions of two symmetrical side surfaces of the valve main body 1 are bent inwards to form a blade shaft mounting platform 11. The two-sided vane shaft mounting platforms 11 are symmetrical about the central axis of the valve body 1. The blade shaft mounting platform 11 is provided with a plurality of blade mounting holes 111. The circle centers of the blade shaft mounting holes 111 on the blade shaft mounting platform 11 are equidistantly arranged on the same straight line, and the straight line is perpendicular to the central shaft of the valve main body 1 in space. The blade mounting holes 111 are provided at positions corresponding to both ends of the blade shaft 2. During installation, the fireproof vane 21 is placed in the valve main body 1, the central shaft of the fireproof vane 21 corresponds to the central shaft of the vane shaft mounting hole 111, the vane shaft 2 sequentially penetrates through the vane shaft mounting hole 111 and the fireproof vane 21, penetrates out of the vane shaft mounting hole 111 on the other side and is fastened, and installation can be completed. The centers of two symmetrical side surfaces of the valve main body 1 are bent inwards to form a blade shaft mounting platform 11, so that the existing blade shaft mounting bracket is replaced. Blade axle mounting platform 11 and valve main part 1 are integrated into one piece, need not pass through welding or rivet connection, avoid having the potential safety hazard of leaking the cigarette because of the seam, prevent that smog from leaking and causing the intensity of a fire to stretch, improve the security and the seal of fire prevention smoke damper.

The outer side of the valve body 1 is provided with a power mechanism 3, the power mechanism 3 drives the fireproof blades 21 to rotate around the blade shaft 2, and the power mechanism 3 is connected with a control device. After the fire control aggregate signal that fire alarm control system sent was received to controlgear, can be to power unit 3 output signal, control power unit 3 carries out work, and fire prevention blade 21 rotates around blade axle 2 for the both ends UNICOM of fire prevention smoke damper is convenient for discharge the dense smoke in the scene of a fire to the external environment in, reduces indoor smog concentration, and the personnel that conveniently are detained the scene of a fire carry out evacuation and rescue work of rescue personnel. When the temperature of the fire scene is higher than 280 ℃, the control equipment outputs signals to the power mechanism 3 to drive the fireproof blades 21 to reset so as to isolate the leakage of high-temperature dense smoke and prevent the flame in the dense smoke from igniting inflammable matters in the external environment, thereby avoiding the spread of fire.

The power mechanism 3 is provided with a handle 31, and the fireproof vane 21 is driven to rotate around the vane shaft 2 by pulling the handle 31. When the control equipment fails or other abnormal problems cause that signals cannot be sent to the power mechanism, the handle can be manually pulled to rotate the fireproof blades 21, so that dense smoke can be discharged conveniently.

The distance between two adjacent blade shaft mounting holes 111 is smaller than the width of the fire protection blade 21. In the closed state, one side of the fire protection flap 21 is stacked on the adjacent fire protection flap 21 to perform a sealing function and prevent the smoke from leaking.

Referring to fig. 3, a shaft seal 22 is disposed between the vane shaft 2 and the vane shaft mounting hole 111, and the shaft seal 22 is sleeved on the vane shaft 2. The shaft seal 22 can prevent dense smoke from leaking from the gap between the blade shaft 2 and the blade shaft mounting hole 111, and enhance the sealing performance of the fireproof smoke exhaust valve.

The two ends of the valve body 1 are provided with square flange plates 12. The fireproof smoke exhaust valve can be connected with a fire-fighting smoke exhaust pipeline through the flange plate 12, and quick installation is realized.

Valve main part 1 and fire prevention blade 21 all adopt the memory alloy material to use repeatedly, need not to change, improve the utilization ratio of product.

To sum up, the utility model discloses a bend inwards the center of the both sides face of valve main part symmetry to form blade axle mounting platform, make blade mounting platform and valve main part structure as an organic whole, the seam of avoiding appearing the junction has the unusual situation that high temperature dense smoke leaked, prevents effectively that the intensity of a fire from stretching, improves the security and the seal of fire prevention smoke damper.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. The utility model provides a novel fire prevention smoke damper which characterized in that includes: the valve main part, pass the blade axle and the cover of valve main part are located the epaxial fire prevention blade of blade, the blade axle passes fire prevention blade's central line, the central point of the both sides face of valve main part symmetry puts the inward bending and forms blade axle mounting platform, and both sides blade axle mounting platform is symmetrical about the center pin of valve main part, be provided with a plurality of blade mounting holes on the blade axle mounting platform, the centre of a circle equidistance of the blade axle mounting hole on the blade axle mounting platform sets up on same straight line, the straight line is perpendicular in the space with the center pin of valve main part, the both ends that set up the position correspondence blade axle of blade mounting hole.

2. The novel fireproof smoke exhaust valve according to claim 1, wherein a power mechanism is arranged outside the valve main body, the power mechanism drives the fireproof blades to rotate around the blade shafts, and the power mechanism is connected with a control device.

3. The novel fireproof smoke exhaust valve according to claim 2, wherein a handle is arranged on the power mechanism, and the handle is pulled to drive the fireproof blades to rotate around the blade shafts.

4. The novel fire and smoke damper as recited in claim 1, wherein the distance between two adjacent vane shaft mounting holes is less than the width of the fire vane.

5. The novel fire and smoke exhaust valve as claimed in claim 1, wherein a shaft seal is disposed between the vane shaft and the vane shaft mounting hole, and the shaft seal is sleeved on the vane shaft.

6. The novel fire and smoke damper as claimed in claim 1, wherein square flanges are provided at both ends of the valve body.

7. The novel fire and smoke exhaust valve as claimed in claim 1, wherein the valve body and the fire protection blades are made of memory alloy.

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