Explosion-proof smoke exhaust fireproof valve
By designing a combination of seals and thermal expansion metal strips in the smoke exhaust fire damper, the risk of explosion caused by poor sealing is solved, achieving higher safety and sealing effect.
Patent Information
- Application Number
- CN202422820470.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Existing smoke exhaust fire dampers have poor sealing performance during use, which allows air and dust to enter the valve through gaps and mix with high-temperature gas, potentially causing an explosion.
The design employs a sealing element, including a sealing strip, a groove, an expansion metal strip, and a limiting strip. Utilizing the principle of thermal expansion, when the valve core rotates to close, the sealing strip engages with the groove, and the expansion metal strip expands to compress the gap. Combined with the spring and the limiting strip, this ensures a tight seal.
It effectively reduces the amount of air and dust entering the valve, lowers the possibility of flammable gas explosion, and improves the safety of the smoke exhaust fire damper.
Smart Images
Figure CN223754656U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of smoke exhaust fire damper, concretely is a kind of explosion-proof smoke exhaust fire damper. BACKGROUND
[0002] Smoke exhaust fire damper, fire-fighting component, generally installed on the pipeline of mechanical smoke exhaust system, open state in ordinary times, open smoke exhaust when fire occurs, close when the temperature of flue gas in smoke exhaust pipeline reaches 280 degrees, and meet the smoke leakage amount and fire resistance integrity requirements within a certain time, play the role of smoke isolation and fire resistance, so it needs smoke exhaust fire damper.
[0003] The existing smoke exhaust fire damper is inconvenient to prevent explosion when using, and the general smoke exhaust fire damper is closed by valve piece, but the sealing performance of smoke exhaust fire damper is generally poor, so that air and dust enter smoke exhaust fire damper through gap and mix with high-temperature gas to explode combustible gas. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a kind of explosion-proof smoke exhaust fire damper to solve the problems raised in the above background.
[0005] In view of the above problems, the technical scheme provided by the utility model is:
[0006] An explosion-proof smoke exhaust fire damper, comprising a smoke exhaust fire damper and a sealing element, the smoke exhaust fire damper comprises a valve shell and a valve core, the valve core is rotatably installed in the interior of the valve shell by a rotating shaft, the sealing element comprises a pair of sealing strips arranged on both sides of the valve core, the sealing strips are elastically connected with the valve core and slide into the valve core, the sealing element further comprises a pair of clamping grooves arranged on the inner wall of the valve shell, and a pair of expansion metal strips are installed on both sides of the clamping grooves, the sealing strips and the clamping grooves are clamped together, and the expansion metal strips press the sealing strips.
[0007] Further, both sides of the valve core are provided with sliding grooves, and the sealing strips slide in the sliding grooves, and a plurality of springs are connected between the sealing strips and the sliding grooves.
[0008] The beneficial effects of the above further scheme are that when the temperature of flue gas in smoke exhaust pipeline reaches 280 degrees, the valve core rotates to close the smoke exhaust fire damper, at the same time, the sealing strips are extruded into the sliding grooves by the inner wall of the valve shell, after the valve core moves to the position, i.e. the sealing strips and the clamping grooves are aligned, the sealing strips can slide into the clamping grooves under the action of the springs, thereby blocking most of the gaps between the valve core and the valve shell, and the expansion metal strips expand under heat, after the sealing strips are clamped into the clamping grooves, the expansion metal strips continue to expand until they extrude the sealing strips, thereby blocking the gaps between the sealing strips and the clamping grooves, and further reducing the amount of air and dust entering the smoke exhaust fire damper, and reducing the possibility of explosion of combustible gas.
[0009] Further, the chute and the sealing strip are matched, and a free end of the sealing strip is arc-shaped.
[0010] The beneficial effect of the above further scheme is that, by limiting the size of the chute and the sealing strip, the gap between the sealing strip and the chute can be ensured to be small enough for air and dust to enter the smoke exhaust fire damper, and by limiting the shape of the free end of the sealing strip, the inner wall of the valve shell can smoothly extrude the sealing strip.
[0011] Further, the expanded metal strip is made of an aluminum alloy.
[0012] Further, the spring and the sealing strip are made of invar steel.
[0013] The beneficial effect of the above further scheme is that the expanded metal strip made of the 6000 series aluminum alloy has a relatively high thermal expansion coefficient, and has a large expansion volume after 280 degrees, and the spring and the sealing strip made of invar steel have a particularly low thermal expansion coefficient, so that they will not be deformed by heat.
[0014] Further, a limiting strip is installed on the inner wall of the valve shell, the limiting strip is close to the clamping groove, the limiting strip abuts against the valve core, and the outer side of the limiting strip is covered with a calcium silicate fiber board.
[0015] The beneficial effect of the above further scheme is that the limiting strip is used to limit the rotation angle of the valve core, and the calcium silicate fiber board is used to ensure that no sparks are generated when the valve core hits the limiting strip.
[0016] Further, a controller is installed on the top surface of the valve shell, and the controller automatically controls the position of the valve core.
[0017] The beneficial effect of the above further scheme is that the controller can keep the valve core in an open state, and after 280 degrees, the heat fuser inside is disconnected, so that the valve core is closed under the action of the torsional spring.
[0018] Compared with the prior art, the beneficial effect of the present application is that: the explosion-proof smoke exhaust fire damper utilizes the principle of thermal expansion of the expanded metal strip, after the valve core is rotated to close the smoke exhaust fire damper, the sealing strip can be clamped into the clamping groove, the expanded metal strip will gradually expand and extrude the sealing strip, thereby completing the sealing of the two sides of the valve shell and the valve core, and further reducing the amount of air and dust entering the smoke exhaust fire damper, and reducing the possibility of igniting flammable gas. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The utility model discloses an explosion-proof smoke exhaust fire damper, which comprises a valve shell, a valve core, a sealing strip, a spring, a limiting strip and a controller.
[0020] Figure 2The first cross section schematic view of the explosion-proof smoke exhaust fire valve is disclosed in the utility model embodiment.
[0021] Figure 3 The second cross section schematic view of the explosion-proof smoke exhaust fire valve is disclosed in the utility model embodiment.
[0022] In the drawing: 100, smoke exhaust fire valve; 1001, valve shell; 1002, valve core; 1003, controller; 200, sealing element; 2001, sealing strip; 2002, sliding groove; 2003, spring; 2004, clamping groove; 2005, expanded metal strip. DETAILED DESCRIPTION
[0023] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0024] Please refer to Figure 1 - Figure 3The utility model provides a technical scheme: an explosion -proof smoke exhaust fire damper, including smoke exhaust fire damper 100, sealing element 200, smoke exhaust fire damper 100 includes valve housing 1001 and valve element 1002, and valve element 1002 rotates and is installed in the inside of valve housing 1001 through the pivot, sealing element 200 includes a pair of sealing strip 2001 being arranged in the both sides of valve element 1002, and sealing strip 2001 and valve element 1002 are elastically connected, and slide into valve element 1002, sealing element 200 still includes a pair of clamping groove 2004 being arranged on the inner wall of valve housing 1001, and both sides of a pair of clamping groove 2004 are equipped with expansion metal strip 2005, and sealing strip 2001 and clamping groove 2004 are engaged, and a pair of expansion metal strip 2005 extrude sealing strip 2001, and both sides of valve element 1002 are equipped with sliding groove 2002, and sealing strip 2001 slides in sliding groove 2002, and a plurality of spring 2003 are connected between sealing strip 2001 and sliding groove 2002, when the temperature of flue gas in smoke exhaust pipeline reaches 280 degrees, valve element 1002 rotates to close smoke exhaust fire damper 100, at the same time, sealing strip 2001 is extruded into sliding groove 2002 in the inner wall of valve housing 1001 and shrinks, after valve element 1002 moves to the position, namely, after sealing strip 2001 and clamping groove 2004 are aligned, sealing strip 2001 can slide into clamping groove 2004 under the action of spring 2003, thereby the most part of the gap between valve element 1002 and valve housing 1002 is shielded, and expansion metal strip 2005 expands under heat, after sealing strip 2001 is clamped into clamping groove 2004, expansion metal strip 2005 will continue to expand until extruding sealing strip 2001, thereby the gap between sealing strip 2001 and clamping groove 2004 is shielded, and then the amount of air and dust entering smoke exhaust fire damper 100 is reduced, and the possibility of igniting combustible gas is reduced.
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0026] Please refer to Figure 1 - Figure 3 The utility model provides a technical scheme: an explosion -proof smoke exhaust fire damper, expansion metal strip 2005 is made of aluminium alloy, spring 2003 and sealing strip 2001 are made of yin steel, the expansion metal strip 2005 made of 6000 series aluminium alloy has relatively higher thermal expansion coefficient, can have larger expansion volume after 280 degrees, and the spring 2003 and sealing strip 2001 made of yin steel have particularly low thermal expansion coefficient, so that they will not be deformed by heat.
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.
[0028] Please refer to Figure 1 - Figure 3 The present application provides a technical solution: an explosion-proof smoke exhaust fire valve, a limiting strip is installed on the inner wall of the valve shell 1001, and the limiting strip is close to the clamping groove 2004, the limiting strip and the valve core 1002 abut, the outer side of the limiting strip is covered with a calcium silicate fiber board, the rotation angle of the valve core 1002 is limited by the limiting strip, and the calcium silicate fiber board is used to ensure that no sparks are generated after the valve core 1002 hits the limiting strip.
[0029] Specifically, the working principle of the explosion-proof smoke exhaust fire valve is as follows: when in use, the smoke exhaust fire valve 100 is connected to the smoke exhaust pipe, when a fire occurs, the valve core 1002 is opened to ensure that the smoke is discharged through the smoke exhaust pipe, when the temperature of the smoke in the smoke exhaust pipe reaches 280 degrees, the people in the building have already been evacuated, the heat fusing device in the controller 1003 is disconnected, the valve core 1002 is closed under the action of the torsional spring, and the spread of the fire is avoided.
Claims
1. An explosion-proof smoke exhaust fire damper, characterized in that The utility model provides an exhaust smoke fire valve (100) and sealing element (200), the exhaust smoke fire valve (100) includes valve shell (1001) and valve core (1002), the valve core (1002) is installed in the inside of valve shell (1001) through the rotation of pivot, the sealing element (200) includes a pair of sealing strip (2001) being arranged in the both sides of valve core (1002), the sealing strip (2001) and valve core (1002) are elastically connected, and slide into valve core (1002), the sealing element (200) still includes a pair of clamping groove (2004) being arranged on the inner wall of valve shell (1001), and a pair of clamping groove (2004) both sides are equipped with expansion metal strip (2005), the sealing strip (2001) and clamping groove (2004) are engaged, and a pair of expansion metal strip (2005) extrude sealing strip (2001).
2. The explosion-proof smoke exhaust fire damper according to claim 1, wherein, Both sides of the valve core (1002) are equipped with sliding groove (2002), and the sealing strip (2001) slides in the sliding groove (2002), and a plurality of springs (2003) are connected between the sealing strip (2001) and the sliding groove (2002).
3. The explosion-proof smoke exhaust fire damper according to claim 2, wherein, The sliding groove (2002) and the sealing strip (2001) are attached, and the free end of the sealing strip (2001) is arc-shaped.
4. The explosion-proof smoke exhaust fire damper of claim 1, wherein, The expansion metal strip (2005) is made of aluminum alloy.
5. The explosion-proof smoke exhaust fire damper of claim 2, wherein, The spring (2003) and the sealing strip (2001) are made of invar steel.
6. The explosion-proof, smoke-venting, fire damper according to claim 1, wherein, The inner wall of the valve shell (1001) is provided with a limiting strip, and the limiting strip is close to the clamping groove (2004), the limiting strip and the valve core (1002) are abutted, and the outer side of the limiting strip is covered with calcium silicate fiber board.
7. The explosion-proof, smoke-venting, fire damper according to claim 1, wherein, The top surface of the valve shell (1001) is provided with a controller (1003), and the controller (1003) automatically controls the position of the valve core (1002).