Automatic ceiling screen

Abstract

The utility model relates to the technical field of smoke-blocking vertical walls, in particular to an automatic smoke-blocking vertical wall which comprises a smoke-blocking vertical wall body, a traction mechanism, a triggering mechanism and a sensing device. The ceiling screen main body is arranged below a bare ceiling or on a decorative ceiling; the traction mechanism is connected with the smoke screen main body and is used for adjusting the lifting of the smoke screen main body; the traction mechanism is connected with the triggering mechanism; the sensing device is detachably connected with the triggering mechanism; when the induction device is triggered, the triggering mechanism can be triggered to drive the traction mechanism to move, and lifting of the ceiling screen body is adjusted. The induction device is a liquid glass bulb or a device containing easily-melted metal. According to the automatic smoke-blocking vertical wall, after the induction device induces high-temperature gas or smoke dust and is triggered, the triggering mechanism drives the traction mechanism to move so as to control and adjust the lifting of the smoke-blocking vertical wall main body, and the induction device does not need to be networked or provide a signal for use, and can automatically react and independently work.

Description

Technical Field

[0001] This application relates to the field of smoke curtain technology, and more particularly to an automatic smoke curtain. Background Technology

[0002] Smoke curtains are a common fire protection measure in building construction, serving to prevent fire and isolate smoke.

[0003] Smoke curtains are classified into two types according to their installation method: fixed smoke curtains and motorized smoke curtains. Fixed smoke curtains are less commonly used because they are fixed above the building's interior space both normally and during emergencies, affecting the building's interior ventilation. Motorized smoke curtains are the most common type. Motorized smoke curtains are normally folded down. In the event of a fire or other emergency, a nearby smoke detector senses the danger and sends a corresponding command through the building's fire control system. This triggers the motor or electric braking mechanism of the motorized smoke curtain, causing it to unfold downwards to a clear smoke exhaust height, thus providing smoke control and fire prevention.

[0004] However, motorized smoke curtains require the installation of corresponding smoke detectors and must be linked with the building's fire control system, which is costly and susceptible to signal interference during use. In the event of a fire, the smoke curtains may affect surrounding signals, resulting in low sensitivity and an inability to take timely action. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide an automatic smoke curtain, which aims to solve the problems that existing electric smoke curtains require linkage and are not sensitive due to signal interference.

[0006] The technical solution adopted by this application to solve the technical problem is as follows: An automatic smoke curtain is provided, comprising:

[0007] The main body of the smoke curtain is installed under the exposed ceiling or on the decorative ceiling;

[0008] A traction mechanism is connected to the smoke curtain body and is used to adjust the raising and lowering of the smoke curtain body.

[0009] A triggering mechanism, wherein the traction mechanism is connected to the triggering mechanism;

[0010] The sensing device is detachably connected to the triggering mechanism; when the sensing device is triggered, it can trigger the triggering mechanism to drive the traction mechanism to move and adjust the lifting and lowering of the smoke curtain body; the sensing device is a liquid glass bulb or a device containing fusible metal.

[0011] Optionally, the triggering mechanism includes a triggering spring and a first pull rod connected together, one end of the first pull rod being connected to the triggering spring, and the other end of the first pull rod being connected to the traction mechanism; the triggering spring is connected to the sensing device.

[0012] Optionally, the traction mechanism includes a second pull rod and a rotating component, the smoke curtain body is connected to the rotating component and moves with the rotation of the rotating component; one end of the second pull rod is connected to the first pull rod, and the other end of the second pull rod abuts against the rotating component.

[0013] Optionally, a first abutment is provided at one end of the second pull rod near the rotating member, and a second abutment is provided on the rotating member; when the second abutment abuts against and fits against the first abutment, the rotating member stops rotating.

[0014] Optionally, the first abutting member is provided with a protrusion, and the second abutting member is provided with an abutting groove corresponding to the protrusion. A limiting rod is provided on the abutting groove, and the limiting rod abuts against the protrusion.

[0015] Optionally, one end of the smoke curtain body is connected to the rotating component, and the other end of the smoke curtain body is provided with a counterweight rod.

[0016] Optionally, the automatic smoke curtain further includes a roller shutter box, with the smoke curtain body and rotating components both located inside the roller shutter box.

[0017] Optionally, a fastener is provided between the roller shutter box and the triggering mechanism, the fastener being used to connect the roller shutter box and the triggering mechanism.

[0018] Optionally, the smoke curtain body is located below the exposed ceiling; or, the smoke curtain body is located on the decorative ceiling.

[0019] Alternatively, the main body of the smoke curtain is located between the exposed ceiling and the decorative ceiling, and the decorative ceiling is provided with a through groove corresponding to the main body of the smoke curtain.

[0020] Optionally, the outer wall of the sensing device is engaged with the inner wall of the triggering mechanism.

[0021] Compared with existing technologies, this application provides an automatic smoke curtain, including a smoke curtain body and a traction mechanism. The smoke curtain body is rolled and folded by the traction mechanism and raised to be installed under the exposed ceiling or on the decorative ceiling, thus not affecting the building space. When the sensing device detects high-temperature gas or smoke and is triggered, the triggering mechanism is triggered in succession, driving the traction mechanism to move, thereby controlling and adjusting the raising and lowering of the smoke curtain body, achieving the effect of automatically adjusting the raising and lowering of the smoke curtain body. The sensing device is a liquid glass bulb or a device containing fusible metal. The liquid glass bulb can directly burst according to temperature changes, thereby triggering the triggering mechanism. The fusible metal can melt according to temperature changes and flow out of the device, thereby triggering the triggering mechanism. Neither requires external power supply or signal, and can react automatically. It has high sensitivity, can work independently, and has simple components and low cost. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the automatic smoke curtain provided in this application;

[0023] Figure 2 This is a schematic diagram of the main body of the automatic smoke curtain provided in this application unfolding downwards;

[0024] Figure 3 This is a schematic diagram showing the connection between the second pull rod and the rotating component of the automatic smoke curtain provided in this application;

[0025] Figure 4 This is a schematic diagram showing the connection between the first abutment and the second abutment of the automatic smoke curtain provided in this application;

[0026] Figure 5 This is a schematic diagram of the second abutment member in the automatic smoke curtain provided in this application;

[0027] Figure 6 This is a schematic diagram showing the connection between the triggering mechanism and the sensing device in the automatic smoke curtain provided in this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Main body of smoke curtain; 2. Traction mechanism; 3. Triggering mechanism; 4. Sensing device; 5. Counterweight rod; 6. Hanger; 7. Exposed ceiling; 8. Decorative ceiling; 11. Roller shutter box; 21. Second pull rod; 22. Rotating component; 31. Triggering spring; 32. First pull rod; 33. Fixing component; 34. Limiting component; 71. Keel connector; 211. First abutting component; 221. Second abutting component; 2111. Protrusion; 2211. Abutting groove; 2212. Limiting rod; 2213. Guide rod; 2214. Snap-fit ​​spring. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0033] The terms "parallel" and "perpendicular" do not mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be completely parallel, but that it can be slightly tilted.

[0034] The terms "horizontal," "vertical," and "sag" do not imply that a component must be absolutely horizontal, vertical, or sagging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] Reference Figure 1 , Figure 2 and Figure 3The first embodiment of this application provides an automatic smoke curtain, comprising a smoke curtain body 1, which is mounted on a bare ceiling 7 or a decorative ceiling 8; a traction mechanism 2, which is connected to the smoke curtain body 1 and is used to adjust the raising and lowering of the smoke curtain body 1; a triggering mechanism 3, which is connected to the traction mechanism 2; and a sensing device 4, which is detachably connected to the triggering mechanism 3. When the sensing device 4 is triggered, it can trigger the triggering mechanism 3 to drive the traction mechanism 2 to move, thereby adjusting the raising and lowering of the smoke curtain body 1. The sensing device 4 is a liquid glass bulb or a device containing fusible metal.

[0037] The traction mechanism 2 is connected to the smoke curtain body 1. It can lift the smoke curtain body 1 to prevent it from affecting the building space below. It can also roll, fold, and overlap the smoke curtain body 1, thus reducing the placement space required. The sensing device 4 can detect temperature changes in high-temperature gas and smoke. When the temperature exceeds a certain value, the sensing device 4 triggers the trigger mechanism 3, which in turn moves the traction mechanism 2, lowering the smoke curtain body 1. The traction mechanism 2 and the smoke curtain body 1 are detachably connected for easy installation, maintenance, and replacement. The smoke curtain body 1 is preferably made of non-combustible material with good corrosion resistance to prevent aging and deformation due to weather and humidity. It also has sufficient bending strength to allow for rolling and folding, reducing the required placement space. Specifically, the main body 1 of the smoke curtain can be a flexible fireproof curtain, which can be rolled up into a cylinder when not in use, taking up little space and making it easy to install; the main body 1 of the smoke curtain can also be a rigid fireproof board, which is normally raised to the position of the exposed roof 7 or decorative ceiling 8 of the building to prevent it from occupying the building space. In the event of a fire, the main body 1 of the smoke curtain can be lowered to a clear height for smoke exhaust to prevent the lateral flow of smoke, thereby improving the smoke exhaust effect.

[0038] The sensing device 4 is a device capable of sensing temperature changes in high-temperature gases and smoke. It can be a device containing a fusible metal or a liquid glass bulb. Specifically, the fusible metal can be an alloy material, and the device is equipped with a venting channel. The venting outlet of the venting channel can be located below the fusible metal to facilitate its escape. When the fusible metal comes into contact with high-temperature gases and smoke, it melts when the temperature exceeds a certain value and flows out through the venting channel. This makes the device lightweight, thereby reducing the pulling force on the triggering mechanism 3, which in turn triggers the mechanism 3 to move. Specifically, the balance of the triggering mechanism 3 is broken, and according to the lever principle, it can pry the traction mechanism 2 to move the smoke curtain body 1. The fusible metal can be a lead-tin alloy, a lead-antimony alloy, or a lead-tin-antimony alloy, etc.

[0039] When the sensing device 4 is a liquid glass bulb, the bulb contains liquid and has a sealed internal structure. When the liquid glass bulb comes into contact with high-temperature gas and smoke, it will rupture when the temperature exceeds a certain value, causing the liquid to spill out. This makes the entire device lightweight, reducing the pulling force on the triggering mechanism 3, thus triggering its movement. The sensing device 4 is preferably a liquid glass bulb, which reduces cost and has a wide range of applications. The liquid inside the glass bulb can be a low-boiling-point liquid like alcohol, which can vaporize when the temperature rises, causing expansion, pressure changes inside the bulb, and ultimately, rupture.

[0040] The sensing device 4 is a device containing fusible metal or a liquid glass bulb. It does not require a network connection to sense and react to temperature, is not affected by signals, has high sensitivity, and can react automatically and work independently.

[0041] The sensing device 4 is detachably connected to the triggering mechanism 3. When the sensing device 4 needs maintenance or malfunctions, it can be removed or directly replaced, making the operation simple and convenient. Specifically, the heights of the sensing device 4 and the smoke curtain body 1 can be set according to actual needs.

[0042] This embodiment of an automatic smoke curtain includes a smoke curtain body 1 and a traction mechanism 2. The smoke curtain body 1 is rolled and folded by the traction mechanism 2 and raised onto the exposed ceiling 7 or decorative ceiling 8, thus not affecting the building space. When the sensing device 4 senses high-temperature gas or smoke and is triggered, the triggering mechanism 3 is triggered in turn, driving the traction mechanism 2 to move, thereby controlling and adjusting the raising and lowering of the smoke curtain body 1, achieving the effect of automatically adjusting the raising and lowering of the smoke curtain body 1. The sensing device 4 is a liquid glass bulb or a device containing fusible metal. The liquid glass bulb can directly burst according to temperature changes, thereby triggering the triggering mechanism 3. The fusible metal can melt according to temperature changes and flow out of the device, thereby triggering the triggering mechanism 3. Neither of these requires external power supply or signal, and can react automatically. It has high sensitivity, can work independently, and has simple components and low cost.

[0043] In some embodiments, the triggering mechanism 3 includes a triggering spring 31 and a first pull rod 32 connected together, one end of the first pull rod 32 being connected to the triggering spring 31, and the other end of the first pull rod 32 being connected to the traction mechanism 2; the triggering spring 31 is connected to the sensing device 4.

[0044] When the sensing device 4 is triggered, it melts and overflows, either through a crack in the glass bulb. This reduces gravity, thus decreasing the tension on the trigger spring 31. The trigger spring 31 then moves upwards due to its elastic restoring force, causing the first pull rod 32 to tilt upwards. The traction mechanism 2, connected to the first pull rod 32, moves accordingly, adjusting the raising and lowering of the smoke curtain body 1. The length of the first pull rod 32 is adjustable, allowing for adjustment of the height of the sensing device 4 as needed.

[0045] Reference Figure 4 and Figure 5 Furthermore, the traction mechanism 2 includes a second pull rod 21 and a rotating member 22. The smoke curtain body 1 is connected to the rotating member 22 and moves with the rotation of the rotating member 22. One end of the second pull rod 21 is connected to the first pull rod 32, and the other end of the second pull rod 21 abuts against the rotating member 22.

[0046] The smoke curtain body 1 can be rolled and overlapped with the rotating component 22, thereby reducing the placement space of the smoke curtain body 1. When installing the automatic smoke curtain, after the smoke curtain body 1 is rolled with the rotating component 22, the rotating component 22 abuts against the second pull rod 21, thereby fixing the position of the rotating component 22. The rotating component 22 stops moving, so that the smoke curtain body 1 is stably in the raised state. When the sensing device 4 is triggered, the tension of the trigger spring 31 changes. The second pull rod 21 moves with the trigger spring 31 and the first pull rod 32. The balance of the rotating component 22 is disrupted, and it rotates under the gravity of the smoke curtain body 1, causing the smoke curtain body 1 to unfold downwards, separating the building space below and playing the role of fire prevention and smoke blocking.

[0047] The building is equipped with a smoke storage chamber according to fire prevention and smoke control requirements. The smoke storage chamber may be equipped with a smoke exhaust port. The smoke storage chamber consists of a bare roof 7 or a decorative ceiling 8 with a smoke curtain, the descended smoke curtain, and the side walls of the building. The building may be equipped with a lower smoke storage ceiling. When the smoke curtain is lowered, the smoke curtain connects the bare roof 7 and the lower smoke storage ceiling, or the decorative ceiling 8 and the lower smoke storage ceiling, together with the side walls of the building, to form a smoke storage chamber. The lower smoke storage ceiling can position the bottom of the descended smoke curtain, so that in special circumstances, after the automatic curtain is lowered, the smoke can be stored in the smoke storage chamber or discharged through its exhaust port to prevent the smoke from spreading to other locations and play a smoke control role.

[0048] The lower smoke storage ceiling is located below the exposed ceiling 7 and the decorative ceiling 8. The smoke curtain is the main body 1 of the smoke curtain in this application. The position of the lower smoke storage ceiling is the clear height of the smoke exhaust required to extend downwards from the main body 1 of the smoke curtain.

[0049] A sealing strip can be installed at the bottom of the smoke curtain body 1. When the smoke curtain body 1 is extended downwards to fit against the lower smoke storage ceiling, the sealing strip can fit tightly against the lower smoke storage ceiling, preventing smoke from escaping through the gaps between the lower smoke storage ceiling and the smoke curtain body 1, thereby improving the fireproof and smoke-blocking effect of the smoke curtain body 1. Specifically, the sealing strip can be an inverted U-shaped structure. When the smoke curtain body 1 is extended downwards, the sealing strip fits tightly against the lower smoke storage ceiling due to gravity. At the same time, due to rapid impact and pressure, the pressure in the U-shaped area inside the sealing strip is released. The internal pressure is lower than the external atmospheric pressure, which can further improve the connection tightness between the sealing strip and the lower smoke storage ceiling, thereby improving the fireproof and smoke-blocking effect of the smoke curtain body 1. The height of the smoke curtain body 1 can be 1-1.5m or longer, depending on actual needs, so that the smoke curtain body 1 can extend down to a clear smoke exhaust height to achieve the functions of smoke blocking and fire prevention. Specifically, the minimum height of the smoke curtain body 1 from the ground is 2.2m, which allows for convenient passage for people below and also provides good smoke blocking and fire prevention. That is, the lower smoke storage ceiling can be set at a height of at least 2.2m from the ground, thereby determining the downward extension height of the smoke curtain body 1.

[0050] The first pull rod 32 and the second pull rod 21 are connected. The first pull rod 32 is provided with several through holes, and the second pull rod 21 is fixedly connected to the first pull rod 32 through the through holes. Specifically, the connection can be made by means of screws, bolts, etc. The through holes on the first pull rod 32 are arranged vertically and are all set at different heights. The second pull rod 21 can be connected to the through holes at different heights to adjust the connection length between the first pull rod 32 and the sensing device 4, thereby adjusting the length of the sensing device 4.

[0051] Specifically, the second pull rod 21 is set horizontally, and the first pull rod 32 is set vertically, so that the first pull rod 32 can sense the change in gravity of the sensing device 4, thereby transmitting the force change of the first pull rod 32 to the second pull rod 21, thereby improving the sensitivity of the triggering mechanism 3.

[0052] Furthermore, the second pull rod 21 is provided with a first abutting member 211 at one end near the rotating member 22, and the rotating member 22 is provided with a second abutting member 221; when the second abutting member 221 abuts and fits against the first abutting member 211, the rotating member 22 stops rotating.

[0053] When installing the smoke curtain body 1, the smoke curtain body 1 can be bent and overlapped along the rotation direction of the rotating part 22, and then the second abutting part 221 of the rotating part 22 and the first abutting part 211 of the second pull rod 21 can be abutted and fitted together so that the rotating part 22 reaches balance.

[0054] The contact between the first abutting member 211 and the second abutting member 221 balances the weight of the smoke curtain body 1 on the rotating member 22 through the interlocking force and friction between them, thus keeping the rotating member 22 in a balanced and stable state and stopping its movement. The contact surfaces of both the first abutting member 211 and the second abutting member 221 can be provided with fine threads or grooves to improve the connection stability between them, thereby maintaining the stable state of the rotating member 22 when they are connected.

[0055] When the second pull rod 21 of the triggering mechanism 3 moves, the force on the second pull rod 21 acts on the first abutment 211, thereby causing the first abutment 211 to separate from the second abutment 221. The rotating part 22 cannot maintain balance and rotates under the gravity of the smoke curtain body 1, causing the smoke curtain body 1 to unfold downward.

[0056] In some embodiments, the first abutment 211 is provided with a protrusion 2111, and the second abutment 221 is provided with an abutment groove 2211 corresponding to the protrusion 2111. A limiting rod 2212 is provided on the abutment groove 2211, and the limiting rod 2212 abuts against the protrusion 2111. The abutment groove 2211 and the limiting rod 2212 can make the first abutment 211 and the second abutment 221 fit tightly together. The force on the second pull rod 21 is balanced with the weight of the smoke curtain body 1 on the rotating member 22, thereby stabilizing the state of the rotating member 22 and allowing the smoke curtain body 1 curled on the rotating member 22 to be in a raised state.

[0057] Furthermore, a snap-fit ​​spring 2214 is provided between the limiting rod 2212 and the abutting groove 2211, and the limiting rod 2212 is connected to the abutting groove 2211 through the snap-fit ​​spring 2214. In order to ensure that the first abutting member 211 and the second abutting member 221 abut against each other tightly, when the first abutting member 211 and the second abutting member 221 are in contact, the snap-fit ​​spring 2214 is in a compressed or stretched state, and the elastic restoring force abuts and limits the first abutting member 211 against the abutting groove 2211.

[0058] When the second pull rod 21 is lifted or pressed down by force, the first abutment 211 separates from the second abutment 221. The snap spring 2214 returns to its original shape under the action of elastic restoring force, so that the second abutment 221 can no longer fit with the first abutment 211. The force on the second abutment 221 disappears, and the rotating part 22 is only subjected to the gravity of the smoke curtain body 1, which accelerates the downward unfolding speed of the smoke curtain body 1 and improves the reaction rate of the smoke curtain body 1.

[0059] Specifically, the second abutment 221 has a groove corresponding to the snap-fit ​​spring 2214, which completely accommodates the snap-fit ​​spring 2214 without affecting the contact and fit between the first abutment 211 and the second abutment 221. The limiting rod 2212 is located on the surface of the first abutment 211. When the snap-fit ​​spring 2214 returns to its original position, the limiting rod 34 is located in the middle of the abutment groove 2211, separating the first abutment 211 from the second abutment 221.

[0060] Furthermore, a guide rod 2213 is provided on the abutting groove 2211, and the snap-fit ​​spring 2214 is sleeved on the guide rod 2213; one end of the snap-fit ​​spring 2214 is connected to the limiting rod 2212, and the other end of the snap-fit ​​spring 2214 is fixedly connected to the abutting groove 2211 through the guide rod 2213.

[0061] The guide rod 2213 guides the snap-fit ​​spring 2214, making it easy to fix the snap-fit ​​spring 2214 to the abutment groove 2211. This allows the snap-fit ​​spring 2214 to abut and limit the first abutment member 211, improving the stability when the first abutment member 211 is connected to the second abutment member 221.

[0062] In some embodiments, the sensing device 4 is a liquid glass bulb, and it is located below the decorative ceiling 8. In most cases, a decorative ceiling 8 is installed below the bare ceiling 7. If the sensing device 4 is located on the bare ceiling 7 or between the bare ceiling 7 and the decorative ceiling 8, the high position of the sensing device 4, coupled with the obstruction of the decorative ceiling 8, makes it difficult for high-temperature gases and dust to rise to a higher position, resulting in poor sensing performance, low sensitivity, and difficulty in timely response. However, by placing the sensing device 4 below the decorative ceiling 8, it can directly contact the high-temperature gases and dust, improving its sensing sensitivity.

[0063] Specifically, the bare ceiling 7 is the main structure of the building, such as the beams in a bare-bones house; while the decorative ceiling 8 includes decorative panels, insulation panels, shock-absorbing panels, etc., and is a floor structure added on the basis of the bare ceiling 7. Therefore, when the building includes decorative ceilings 8, the sensing device 4 is preferably installed below all the decorative ceilings 8 so that it can directly contact the high-temperature gas or smoke in the event of a fire, thereby improving sensitivity.

[0064] In some embodiments, one end of the smoke curtain body 1 is connected to the rotating member 22, and the other end of the smoke curtain body 1 is provided with a counterweight rod 5. When the rotating member 22 loses balance, the smoke curtain body 1 can be quickly deployed downwards under the weight of its own weight and the gravity of the counterweight rod 5. The weight of the counterweight rod 5 can be adjusted according to the connection strength of the first abutment member 211 and the second abutment member 221, so that when the first abutment member 211 and the second abutment member 221 are in contact, the rotating member 22 can be in a balanced state, so that the smoke curtain body 1 can be stably in the raised state.

[0065] Furthermore, the rotating component 22 may be equipped with an additional rotating spring (not shown in the figure). Under the rotational traction force of the additional rotating spring, the smoke curtain body 1 can be deployed downward more quickly, so as to play a smoke-blocking and fire-fighting role more quickly.

[0066] The height of the smoke curtain body 1 can be the height of the building's interior space, meaning the counterweight rod 5 can drop directly to the clear height of the smoke exhaust, making contact with the lower smoke storage ceiling to emit a sound, serving as a warning. A sensor can be installed on the counterweight rod 5. After the counterweight rod 5 drops, the sensor detects the change in force on the counterweight rod 5, triggering an alarm signal or directly emitting an alarm bell to alert nearby personnel to the fire's location and take timely action. Furthermore, the smoke curtain body 1 can be painted to enhance its heat insulation and fireproofing performance. Fluorescent warning lettering can also be applied to the paint surface, making the warning lettering visible to nearby people when it is deployed, allowing them to move away from the area or take firefighting measures.

[0067] In addition, to prevent the sensor from malfunctioning due to temperature changes and thus failing to provide an alert, a sound-generating component can be installed at the bottom of the counterweight rod 5. This component contains a hollow rubber structure resembling a kazoo. When the smoke curtain body 1 unfolds downwards, the counterweight rod 5 falls first, causing the sound-generating component underneath to be compressed. The change in volume of the hollow internal structure alters the air pressure, thereby producing a sound. This sound is unique and highly penetrating, providing an excellent alert effect, and its sound generation is not affected by fire or signal issues. Furthermore, the sound-generating component can be made of rubber.

[0068] Furthermore, the automatic smoke curtain also includes a roller shutter box 11, within which the smoke curtain body 1 and the rotating component 22 are both located. The roller shutter box 11 serves as a protective device for the smoke curtain body. The placement of the smoke curtain body and the rotating component 22 inside the roller shutter box 11 prevents impurities and water vapor from entering the roller shutter box 11 and damaging the smoke curtain body 1 and the rotating component 22.

[0069] Specifically, one end of the additional rotating spring is positioned at the center of the rotating member 22; the other end is positioned on the roller shutter box 11 as the smoke curtain body 1 curls up, thus rotating around the center of the rotating member 22 and connecting with the second abutment member 221. When the balance of the rotating member 22 is broken, the elastic restoring force on the additional rotating spring can drive the second abutment member 221 to rotate in the opposite direction to the previous curling of the smoke curtain body 1, thereby accelerating the downward speed of the smoke curtain body 1.

[0070] Reference Figure 6 Furthermore, a fixing member 33 is provided between the roller shutter box 11 and the triggering mechanism 3. The fixing member 33 is used to connect the roller shutter box 11 and the triggering mechanism 3. The fixing member 33 can stably connect the roller shutter box 11 and the triggering mechanism 3, thereby fixing the position of the triggering mechanism 3.

[0071] The triggering mechanism 3 may also be equipped with a limiting member 34, which abuts against the second pull rod 21, so that the second pull rod 21 is in a horizontal state with the ground and the second pull rod 21 is perpendicular to the first pull rod 32. When the sensing device 4 senses high temperature gas and smoke, the gravity changes, and the first pull rod 32 is subjected to a change in vertical force, thus moving vertically and causing the second pull rod 21 to become unbalanced in the vertical direction. At this time, the first abutting member 211 and the second abutting member 221 are horizontally connected and are mainly connected stably by lateral friction. When the second pull rod 21 becomes unbalanced in the vertical direction, vertical forces appear on the first abutting member 211 and the second abutting member 221, which is more likely to disrupt the stable connection between the first abutting member 211 and the second abutting member 221, thereby causing the rotating member 22 to become unbalanced and causing the smoke curtain body 1 to unfold downward.

[0072] Furthermore, the outer wall of the sensing device 4 is engaged with the inner wall of the triggering mechanism 3; that is, the outer wall of the sensing device 4 and the inner wall of the triggering mechanism 3 are provided with corresponding threads, which can be connected by thread engagement, thereby improving the connection stability of the two. A smoke alarm can be installed next to the sensing device 4. When the sensing device 4 reacts, the smoke alarm is triggered simultaneously to spray water, responding to the fire situation at the first moment and achieving the effect of extinguishing the fire. In addition, the outer wall of the sensing device 4 and the inner wall of the triggering mechanism 3 can also be connected by a fixing clip, so that the sensing device 4 can be adjusted in height according to the height of the bare ceiling 7 or the decorative ceiling 8, ensuring that it is installed under the decorative ceiling 8.

[0073] The triggering mechanism 3 can be connected to the sensing device 4 via the first pull rod 32 and the triggering spring 31, thereby adjusting the height of the sensing device 4 by adjusting the length of the first pull rod 32; alternatively, the sensing device 4 can be engaged with the triggering mechanism 3, and the height of the sensing device 4 can be adjusted by adjusting the height of the triggering mechanism 3. The liquid glass bulb of the sensing device 4 is connected via the triggering spring 31. When the liquid glass bulb bursts due to high-temperature gas or smoke, the tension in the triggering spring 31 changes, causing the first pull rod 32 and the second pull rod 21 to move, thus disrupting the balance of the rotating component 22. This causes the smoke curtain body 1 to unfold downwards under its own weight and the action of the counterweight rod 5, reaching a clear smoke exhaust height.

[0074] In some embodiments, the smoke curtain body 1 is located on the exposed ceiling 7; or, the smoke curtain body 1 is located on the decorative ceiling 8; or, the smoke curtain body 1 is located between the exposed ceiling 7 and the decorative ceiling 8, and the decorative ceiling 8 is provided with a through groove corresponding to the smoke curtain body 1.

[0075] The smoke curtain body 1 can be installed on the bare ceiling 7 or the decorative ceiling 8 without affecting the building space below. In the event of a fire, it can extend downwards by sensing abnormal temperatures and smoke to achieve the effects of smoke blocking and fire prevention. Therefore, if the building ceiling includes both the bare ceiling 7 and the decorative ceiling 8, the decorative ceiling 8 should be provided with a through groove for the smoke curtain body 1 to facilitate its downward extension.

[0076] Preferably, when the building includes an exposed roof 7 and a decorative ceiling 8, the smoke curtain body 1 is positioned between the exposed roof 7 and the decorative ceiling 8, making full use of the space between them to conceal the smoke curtain body 1 and improve the utilization rate of the building space. The exposed roof 7 and the decorative ceiling 8 can be connected by a keel connector 71.

[0077] The smoke curtain body 1 is equipped with a hanger 6. The ceiling can be made of angle steel as the keel. One end is connected to the main structure of the building through the hanger 6, such as the bare ceiling 7 or decorative ceiling 8, and the other end fixes the smoke curtain body 1 to the keel of the hanger 6. At the same time, the sensing mechanism and the traction mechanism 2 can also be fixedly connected to the keel.

[0078] In summary, this application provides an automatic smoke curtain, comprising a smoke curtain body and a traction mechanism. The smoke curtain body is rolled and folded by the traction mechanism and raised to be installed under the exposed ceiling or on the decorative ceiling, thus not affecting the building space. When the sensing device detects high-temperature gas or smoke and is triggered, the triggering mechanism is triggered in succession, driving the traction mechanism to move, thereby controlling and adjusting the raising and lowering of the smoke curtain body, achieving the effect of automatically adjusting the raising and lowering of the smoke curtain body. The sensing device is a liquid glass bulb or a device containing fusible metal. The liquid glass bulb can directly burst according to temperature changes, thereby triggering the triggering mechanism. The fusible metal can melt according to temperature changes and flow out of the device, thereby triggering the triggering mechanism. Neither requires external power supply or signal, and can react automatically. It has high sensitivity, can work independently, and has simple components and low cost.

[0079] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing examples, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions in the examples of this application.

Claims

1. An automatic smoke screen curtain, characterized by The automatic smoke curtain comprises a smoke curtain body, a traction mechanism, a trigger mechanism and a sensing device. The traction mechanism is connected with the smoke curtain body and used for adjusting the lifting of the smoke curtain body. The trigger mechanism is connected with the traction mechanism. The sensing device is detachably connected with the trigger mechanism. When the sensing device is triggered, the trigger mechanism is triggered to move the traction mechanism to adjust the lifting of the smoke curtain body.

2. The automatic smoke screen curtain according to claim 1, characterized in that The sensing device is a liquid glass bulb or a device containing a fusible metal.

3. The automatic smoke screen curtain according to claim 2, characterized in that The trigger mechanism comprises a trigger spring and a first pull rod.

4. The automatic smoke screen curtain according to claim 3, wherein One end of the first pull rod is connected with the trigger spring, and the other end of the first pull rod is connected with the traction mechanism.

5. The automatic smoke screen curtain according to claim 4, characterized in that The traction mechanism comprises a second pull rod and a rotating member.

6. The automatic smoke screen curtain according to claim 3, wherein One end of the second pull rod is connected with the first pull rod, and the other end of the second pull rod is abutted with the rotating member.

7. The automatic smoke screen curtain according to claim 3, wherein The second pull rod is provided with a first abutment member at one end close to the rotating member.

8. The automatic smoke screen curtain according to claim 7, characterized in that The rotating member is provided with a second abutment member.

9. The automatic smoke screen curtain according to claim 1, wherein When the second abutment member is abutted and fitted with the first abutment member, the rotating member stops rotating. The first abutment member is provided with a protruding part, and the second abutment member is provided with an abutment groove corresponding to the protruding part.

10. The automatic smoke screen curtain according to claim 1, wherein The abutment groove is provided with a limiting rod abutted with the protruding part. One end of the smoke curtain body is connected with the rotating member, and the other end of the smoke curtain body is provided with a counterweight rod. The automatic smoke curtain further comprises a roller shutter box. The smoke curtain body and the rotating member are located in the roller shutter box. A fixing member is arranged between the roller shutter box and the trigger mechanism. The fixing member is used for connecting the roller shutter box and the trigger mechanism. The smoke curtain body is located below the bare ceiling. Alternatively, the smoke curtain body is located on the decorative ceiling. Alternatively, the smoke curtain body is located between the bare ceiling and the decorative ceiling. The decorative ceiling is provided with a through slot corresponding to the smoke curtain body. The outer wall of the sensing device is meshingly connected with the inner wall of the trigger mechanism.

Images