A composite steel fireproof roller shutter door for building applications with energy-saving, heat-insulating, and pressure-relief functions.

Abstract

This invention belongs to the technical field of fire-resistant rolling shutter doors, and particularly relates to a composite steel fire-resistant rolling shutter door for buildings with energy-saving, heat-insulating, and pressure-relief functions. It includes a curtain body and a first drive structure. The curtain body is used to isolate and prevent fire in corridors. The first drive structure automatically drives the roller to close the shutter in the event of a fire, and automatically drives the roller to retract the shutter for energy-saving operation after the fire is extinguished and the locking mechanism is unlocked. In this invention, the pressure relief holes on the cylinders that make up the rolling shutter are blocked by adjacent cylinders during a fire. However, in the event of an explosion or a rapid increase in pressure, the holes rotate 90 degrees to effectively relieve the blast impact. Furthermore, the pressure relief holes on all the cylinders of the rolling shutter are evenly distributed across the curtain surface rather than concentrated in one location. This effectively increases the pressure relief area without weakening the strength of the rolling shutter, thereby achieving effective pressure relief. It also simplifies the pressure relief structure of the rolling shutter door and reduces manufacturing costs.

Description

Technical Field

[0001] This invention belongs to the field of fireproof rolling shutter door technology, and particularly relates to a composite steel fireproof rolling shutter door for building applications with energy-saving, heat-insulating and pressure-relief functions. Background Technology

[0002] Fire-resistant roller shutters are one of the fire-resistant partitioning measures in buildings. They are typically used on firewalls, stairwell entrances, or pipe shaft openings, and are required to isolate smoke and fire. Fire doors play an important role in preventing the spread of smoke and fire and reducing losses.

[0003] The strength of existing fire-resistant roller shutters is insufficient due to their structural limitations, and they cannot meet the fire resistance and explosion-proof requirements of fire-resistant roller shutters. They are prone to deformation in the event of an explosion or excessive pressure.

[0004] Patent application number 202020089381.6 enhances the strength of the curtain by welding reinforcing ribs onto the curtain slats. However, welding these reinforcing ribs increases the weight of the curtain, resulting in higher energy consumption during operation. Patent application number 92106488.8 uses two explosion-proof rods that move horizontally to the middle of the unexposed side of the curtain after it falls to support the curtain and help it withstand the impact of an explosion on the front side. However, these explosion-proof rods make the fireproof roller shutter door structure more complex and increase costs.

[0005] Existing fire-resistant roller shutters use pressure relief vents at their top and bottom ends or on the left and right sides to buffer the pressure from explosions on the fire-facing side. The pressure relief vents are equipped with pressure relief structures that open actively or passively during a fire. The area of ​​the pressure relief vents needs to be large enough to achieve an effective pressure relief effect. However, their installation reduces the fire resistance of the roller shutter and the pressure relief structure inside the vents is complex.

[0006] In addition, existing fireproof roller shutters require motors to drive their rising and falling, resulting in high energy consumption and making them neither energy-efficient nor environmentally friendly.

[0007] This invention designs a composite steel fireproof roller shutter door for buildings with energy-saving, heat-insulating, and pressure-relief functions to solve the above problems. Summary of the Invention

[0008] Based on this, it is necessary to address the problems existing in current fire-resistant rolling shutter doors by providing a composite steel fire-resistant rolling shutter door for buildings with energy-saving, heat-insulating, and pressure-relief functions. In this invention, the pressure relief holes opened along the axis of the cylinders that make up the rolling shutter are blocked by adjacent cylinders during a fire. However, in the event of an explosion or a rapid increase in pressure, the holes rotate 90 degrees to effectively relieve the pressure impact. Furthermore, the pressure relief holes on all cylinders of the rolling shutter are evenly distributed on the surface of the rolling shutter rather than being concentrated in one place. This effectively increases the pressure relief area without weakening the strength of the rolling shutter, thereby achieving the purpose of effective pressure relief. At the same time, it simplifies the pressure relief structure of the rolling shutter door and reduces manufacturing costs.

[0009] The above objectives are achieved through the following technical solutions: A composite steel fireproof roller shutter door for building applications, featuring energy-saving, heat-insulating, and pressure-relief functions, used for fire isolation in corridors, comprising: A curtain body is used for fire isolation in stairwells. The curtain body includes a roller mounted on the top of the stairwell. A roller blind is mounted on the cylindrical surface of the roller. The roller blind is composed of several cylindrical tubes arranged in sequence and closed at both ends. The interior of each cylindrical tube is divided into two semi-cylindrical spaces by longitudinal partitions. The two semi-cylindrical spaces are respectively filled with heat insulation material corresponding to the fire-facing side and non-Newtonian fluid corresponding to the unfire-facing side. A through pressure relief hole is opened on the cylindrical surface. The surface of the cylindrical tube is densely covered with honeycomb grooves. Porous material is placed in the honeycomb grooves. A sealing layer covering the honeycomb grooves is provided on the surface of the cylindrical tube. The sealing layers on adjacent cylindrical tubes are mutually squeezed and sealed. A square rod is hinged to the cylindrical tube at the bottom of the roller blind. A second sealing gasket that cooperates with the sealing layer is provided on the square rod.

[0010] The frame provides the roller blind with roll-up guides and retraction space.

[0011] The locking structure, which engages with the locking groove on the square rod, is used to automatically lock the roller shutter as it closes.

[0012] The first drive structure is used to automatically drive the roller to lower and close the shutter in the event of a fire, and to automatically drive the roller to retract the shutter in an energy-saving manner after the fire is extinguished and the locking structure is unlocked.

[0013] The cooling structure is used to cool the fire-facing side of the roller shutter by water when it is closed for fire isolation.

[0014] The second drive structure is used to release pressure by driving the cylinder in the roller shutter to rotate, thereby opening the pressure relief hole on the cylinder to release pressure when an explosion or a sharp increase in pressure occurs on the fire side of the roller shutter.

[0015] In one embodiment, the frame includes a door frame, the inner wall of which has a side groove that mates with the four sides of the roller shutter, the top of which has a roller box for mounting the roller, and the bottom of which has an opening that communicates with the upper side groove of the door frame and mates with the roller shutter. Two guide rollers are provided at the opening to guide the roller shutter vertically up and down within the opening.

[0016] In one embodiment, labyrinth grooves are formed on the inner walls of both sides of the side groove.

[0017] In one embodiment, a first sealing gasket that mates with the cylinder and the square rod is provided at the inner edge of the side groove.

[0018] In one embodiment, two coaxial first round pins are provided at both ends of the cylinder. The two first round pins on the same end side of adjacent cylinders are hinged together by a first plate and two meshing first gears are fixed on the two first round pins on the same end side. The first round pin on the cylinder at the top of the roller blind is hinged to the lug on the roller through a second plate. The first round pin on the cylinder at the bottom of the roller blind is hinged to the second round pin at the end of the square rod through a third plate. The second round pin is provided with a second gear, and the second gear is connected to the first gear on the first round pin of the adjacent cylinder through the third gear on the third plate.

[0019] In one embodiment, the first drive structure includes a spiral spring and two winding wheels. The two winding wheels are symmetrically arranged on both sides of the top of the door frame via a first rotating shaft. A pull rope is wound on the winding wheel. The end of the pull rope passes over a fixed pulley arranged on the corresponding side of the bottom of the door frame and is connected to a rotating sleeve on the second round pin at the corresponding end of the square rod. Two fourth gears are arranged on the two first rotating shafts. The two fourth gears mesh one-to-one with two fifth gears on a synchronous shaft. The synchronous shaft is rotatably arranged on the door frame. One of the first rotating shafts is driven by a first servo motor arranged on the back side of the door frame. The first servo motor is electrically connected to a temperature sensor arranged on the front side of the door frame. The spiral spring is arranged in a round shell at one end of the reel box. The two ends of the spiral spring are respectively connected to the inner wall of the reel box and the end shaft at the end of the reel. A damper is fitted between the end shaft and the round hole at the end of the reel box.

[0020] In one embodiment, the lock structure includes a lock rod, which is slidably disposed in a second groove communicating with a side groove on the back side of the bottom of the door frame. The lock rod cooperates with a lock groove on the square rod and a first pressure sensor in the lock groove. The inner end of the lock rod is provided with a driving inclined surface that does not obstruct the downward insertion of the square rod into the bottom of the side groove. The outer end of the lock rod is provided with a pull ring. A first spring that drives the lock rod to move into the side groove is disposed in an annular groove on the inner wall of the second groove. The two ends of the first spring are respectively connected to the inner wall of the annular groove and a first compression spring ring on the lock rod.

[0021] In one embodiment, the second drive structure includes two second push rods corresponding one-to-one with the second round pins at both ends of the square rod. The second push rods slide vertically in a first groove at the bottom of the side groove. A third spring is provided in the first groove to drive the second push rods to move upward. The top end of the second push rod is provided with a sixth gear that meshes with the second gear on the corresponding side second round pin via a second rotating shaft. A seventh gear is provided on the second rotating shaft. A second servo motor is provided on the second push rod. An eighth gear that meshes with the seventh gear is provided on the output shaft of the second servo motor. The second servo motor is electrically connected to a second pressure sensor provided on the fire side of the door frame.

[0022] In one embodiment, the cooling structure includes a main water pipe and a spray pipe. The main water pipe is embedded in the bottom of the door frame and connected to a water source. A valve assembly that cooperates with a square rod is provided on the main water pipe. The valve assembly is fixed in the mounting groove at the bottom of the side groove. The valve assembly automatically opens after the square rod is inserted into the bottom of the side groove and automatically closes after the square rod is rolled up with the curtain. The spray pipe is located on the top side of the door frame and is connected to the main water pipe. The spray pipe has nozzles that spray water downwards evenly along the width direction of the door frame.

[0023] In one embodiment, the valve assembly includes a valve body disposed in a mounting groove. The valve body has a first water channel and a second water channel that are interconnected and connected to the main water pipe at both ends. The inner diameter of the first water channel is larger than that of the second water channel. The first water channel is located on the water source side of the main water pipe, while the second water channel is located on the spray pipe side of the main water pipe. The first water channel and the second water channel are connected by a guide cone surface. A sphere with a diameter between the inner diameters of the first and second water channels is disposed in the first water channel. A guide sleeve communicating with the guide cone surface is disposed at the upper end of the valve body. A first push rod slides vertically in the guide sleeve. The upper and lower ends of the first push rod cooperate with a square rod and a sphere, respectively. A second spring that drives the first push rod to move upward is disposed in the annular groove of the inner wall of the guide sleeve. The two ends of the second spring are connected to the inner wall of the annular groove and a second compression spring ring on the first push rod, respectively.

[0024] The beneficial effects of this invention are: 1. In this invention, the cylinder that makes up the roller shutter and the honeycomb grooves on the outer surface of the cylinder can effectively increase the strength of the roller shutter itself, and the structure is simple and the weight is light. The heat insulation material and non-dynamic fluid filled in the two spaces separated by the longitudinal partition in the cylinder can respectively achieve the functions of heat insulation and heat preservation and resisting explosion impact. At the same time, the porous material filled in the honeycomb groove can partially absorb the explosion impact force, effectively weakening the damage of the explosion impact to the curtain body. Meanwhile, it simplifies the explosion-proof structure of the roller shutter door and reduces manufacturing costs.

[0025] 2. In this invention, the pressure relief holes on the cylinders that make up the roller shutter are blocked by adjacent cylinders during a fire. However, in the event of an explosion or a sudden increase in pressure, they rotate 90 degrees to effectively relieve the pressure from the explosion. Furthermore, the pressure relief holes on all the cylinders of the roller shutter are evenly distributed on the roller shutter surface rather than being concentrated in one place. This effectively increases the pressure relief area without weakening the strength of the roller shutter, thereby achieving the purpose of effective pressure relief. At the same time, it simplifies the pressure relief structure of the roller shutter door and reduces manufacturing costs.

[0026] 3. In this invention, the first servo motor only consumes energy to drive and store energy in the spiral spring when the roller shutter is falling. When the roller shutter rises, it automatically rises under the action of the energy-stored spiral spring without being driven by the first servo motor, thereby achieving the purpose of energy saving.

[0027] 4. The cooling structure in this invention can form a water curtain on the fire-facing side of the roller shutter after it falls and closes, thereby achieving the purpose of cooling the roller shutter, extending the fireproof and heat-insulating time of the roller shutter, and protecting the roller shutter from damage by high temperature.

[0028] 5. The sealing groove opened on the inner wall of the door frame side groove in this invention can effectively prevent air convection on both sides of the roller shutter when the seal between it and the roller shutter fails, thereby achieving further fireproof and heat insulation purposes. Attached Figure Description

[0029] Figure 1 This is an overall schematic diagram of the invention from two perspectives; Figure 2 This is the first overall sectional view of the present invention; Figure 3 This is the first sectional view of the first driving structure; Figure 4 This is the second sectional view of the first driving structure; Figure 5 This is a sectional view of the valve assembly; Figure 6 This is a cross-sectional view of the valve assembly mating with the bottom square rod of the roller shutter; Figure 7 This is the second overall sectional view of the present invention; Figure 8 This is a partial cross-sectional view of the present invention; Figure 9 This is a sectional view of the lock structure and valve assembly in conjunction with the bottom square rod of the roller shutter; Figure 10 This is a sectional view of the roller shutter fitting with the door frame; Figure 11 It is the frame and its sectional view; Figure 12 This is the first sectional view of the door frame structure; Figure 13 This is the second sectional view of the door frame structure; Figure 14 This is a schematic diagram of the curtain. Figure 15 These are two structural sectional views of the curtain. Figure 16 It is a cylindrical structure and its first sectional view; Figure 17 This is the second sectional view of the cylinder; Figure 18 It is a cylindrical structure and its third sectional view; Labels in the diagram: 100. Frame; 101. Door frame; 102. Side groove; 103. Mounting groove; 104. First slide groove; 105. Second slide groove; 106. Maze groove; 108. Roller box; 109. Opening; 110. Round shell; 111. Guide roller; 112. First sealing gasket; 200. Curtain body; 201. Roller drum; 202. End shaft; 203. Roller blind; 204. Cylindrical tube; 205. Honeycomb groove; 206. Longitudinal partition; 207. Pressure relief hole; 208. Thermal insulation material; 209. Non-dynamic fluid; 210. Porous material; 211. Sealing layer; 212. First round pin; 213. First slat; 214. Second slat; 215. Support lug; 216. First gear; 217. Third slat; 218. Square rod; 219. Second round pin; 220. Second gear; 221. Third gear; 222. Second sealing gasket; 223. Locking groove; 300. First drive structure; 301. First rotating shaft; 302. Winding wheel; 303. Pull rope; 304. Fixed pulley; 305. Rotating sleeve; 306. First servo motor; 307. Fourth gear; 308. Fifth gear; 309. Synchronous shaft; 310. Temperature sensor; 311. Spiral spring; 312. Damper; 400. Lock structure; 401. Locking rod; 402. Driving ramp; 403. Pull ring; 404. First compression spring ring; 405. First spring; 406. First pressure sensor; 500. Cooling structure; 501. Main water pipe; 502. Water spray pipe; 503. Nozzle; 504. Valve assembly; 505. Valve body; 506. First water channel; 507. Second water channel; 508. Ball; 509. Guide sleeve; 510. First push rod; 511. Second compression spring ring; 512. Second spring; 513. Guide cone surface; 600. Second drive structure; 601. Second push rod; 602. Third spring; 603. Second rotating shaft; 604. Sixth gear; 605. Seventh gear; 606. Eighth gear; 607. Second servo motor; 608. Second pressure sensor. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0031] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] like Figures 1-18 As shown, a composite steel fireproof roller shutter 203 door with heat preservation and pressure relief functions is used for fire isolation in corridors, comprising: A curtain 200 is used for fire isolation in the corridor. The curtain 200 includes a roller 201 installed at the top of the corridor. A roller blind 203 is installed on the cylindrical surface of the roller 201. The roller blind 203 is composed of several cylindrical tubes 204 arranged sequentially and closed at both ends. The cylindrical tubes 204 are divided into two semi-cylindrical spaces by longitudinal partitions 206. The two semi-cylindrical spaces are respectively filled with heat insulation material 208 corresponding to the fire-facing side and a non-Newtonian fluid corresponding to the unfire-facing side. A through pressure relief hole 207 is provided on the cylindrical surface. The surface of the cylinder 204 is densely covered with honeycomb grooves 205. Porous material 210 is provided in the honeycomb grooves 205. A sealing layer 211 covering the honeycomb grooves 205 is provided on the surface of the cylinder 204. The sealing layers 211 on adjacent cylinders 204 are squeezed and sealed to each other. A square rod 218 is hinged to the cylinder 204 at the bottom end of the roller shutter 203. A second sealing gasket 222 that cooperates with the sealing layer 211 is provided on the square rod 218.

[0034] The frame 100 provides a roll-up guide and a roll-up housing space for the roller shutter 203.

[0035] The locking structure 400, which engages with the locking groove 223 on the square rod 218, is used to automatically lock the roller shutter 203 when it is closed.

[0036] The first drive structure 300 is used to automatically drive the roller drum 201 to lower and close the roller shutter 203 in the event of a fire, and to automatically drive the roller drum 201 to perform energy-saving winding of the roller shutter 203 after the fire is extinguished and the locking structure 400 is unlocked.

[0037] The cooling structure 500 is used to cool the fire-facing side of the roller shutter 203 by water when the roller shutter 203 is closed for fire isolation.

[0038] The second drive structure 600 is used to relieve pressure by driving the cylinder 204 in the roller shutter 203 to rotate, thereby opening the pressure relief hole 207 on the cylinder 204 to release pressure when an explosion or a sharp increase in pressure occurs on the fire side of the roller shutter 203.

[0039] In a further embodiment, such as Figure 8 , Figure 11 , Figure 12 , Figure 13 As shown, the frame 100 includes a door frame 101. The inner wall of the door frame 101 has a side groove 102 that matches the four sides of the roller shutter 203. The top of the door frame 101 is provided with a roller box 108 for installing the roller 201. The bottom of the roller box 108 has an opening 109 that communicates with the upper side groove 102 of the door frame 101 and matches the roller shutter 203. Two guide rollers 111 are provided at the opening 109 to guide the roller shutter 203 vertically up and down within the opening 109.

[0040] In a further embodiment, such as Figure 10 , Figure 11 , Figure 12 , Figure 13 As shown, labyrinth grooves 106 are provided on the inner walls of both sides of the side groove 102.

[0041] In a further embodiment, such as Figure 8 , Figure 9 , Figure 10 As shown, a first sealing gasket 112 is provided at the inner edge of the side groove 102 to cooperate with the cylinder 204 and the square rod 218.

[0042] In a further embodiment, such as Figure 14 , Figure 15 , Figure 16 As shown, two coaxial first round pins 212 are provided at both ends of the cylinder 204. The two first round pins 212 on the same end side of adjacent cylinders 204 are hinged through a first strip 213, and two meshing first gears 216 are fixed on the two first round pins 212 on the same end side. The first round pin 212 on the cylinder 204 at the top of the roller blind 203 is hinged to the lug 215 on the roller 201 through a second strip 214. The first round pin 212 on the cylinder 204 at the bottom of the roller blind 203 is hinged to the second round pin 219 at the end of the square rod 218 through a third strip 217. The second round pin 219 is provided with a second gear 220. The second gear 220 is connected to the first gear 216 on the first round pin 212 of the adjacent cylinder 204 through a third gear 221 on the third strip 217.

[0043] In a further embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the first drive structure 300 includes a coil spring 311 and two winding wheels 302. The two winding wheels 302 are symmetrically arranged on both sides of the top of the door frame 101 via a first rotating shaft 301. A pull rope 303 is wound on the winding wheels 302. The end of the pull rope 303 passes over a fixed pulley 304 located on the corresponding side of the bottom of the door frame 101 and is connected to a rotating sleeve 305 on the second round pin 219 at the corresponding end of the square rod 218. Two fourth gears 307 are provided on the two first rotating shafts 301. The two fourth gears 307 are connected to two fifth gears on the synchronous shaft 309. 308 are engaged in a one-to-one correspondence. The synchronous shaft 309 is rotatably mounted on the door frame 101. One of the first rotating shafts 301 is connected to the first servo motor 306 mounted on the unfired side of the door frame 101. The first servo motor 306 is electrically connected to the temperature sensor 310 mounted on the fire-facing side of the door frame 101. The spiral spring 311 is mounted inside the circular shell 110 at one end of the reel box 108. The two ends of the spiral spring 311 are respectively connected to the inner wall of the reel box 108 and the end shaft 202 at the end of the reel drum 201. A damper 312 is fitted between the end shaft 202 and the circular hole at the end of the reel box 108.

[0044] In a further embodiment, such as Figure 7 , Figure 9 , Figure 12 As shown, the lock structure 400 includes a lock rod 401. The lock rod 401 is slidably disposed in a second slide groove 105 that communicates with the side groove 102 on the back side of the bottom of the door frame 101. The lock rod 401 cooperates with the lock groove 223 on the square rod 218 and the first pressure sensor 406 in the lock groove 223. The inner end of the lock rod 401 is provided with a driving inclined surface 402 that does not form an obstruction when the square rod 218 is inserted downward into the bottom of the side groove 102. The outer end of the lock rod 401 is provided with a pull ring 403. A first spring 405 that drives the lock rod 401 to move into the side groove 102 is disposed in an annular groove on the inner wall of the second slide groove 105. The two ends of the first spring 405 are respectively connected to the inner wall of the annular groove and the first compression spring ring 404 on the lock rod 401.

[0045] In a further embodiment, such as Figure 2 , Figure 3As shown, the second drive structure 600 includes two second push rods 601 that correspond one-to-one with the second round pins 219 at both ends of the square rod 218. The second push rods 601 slide vertically in the first slide groove 104 at the bottom of the side groove 102. The first slide groove 104 is provided with a third spring 602 that drives the second push rods 601 to move upward. The top of the second push rod 601 is provided with a sixth gear 604 that engages with the second gear 220 on the corresponding side second round pin 219 via a second rotating shaft 603. A seventh gear 605 is provided on the second rotating shaft 603. A second servo motor 607 is provided on the second push rod 601. An eighth gear 606 that meshes with the seventh gear 605 is provided on the output shaft of the second servo motor 607. The second servo motor 607 is electrically connected to a second pressure sensor 608 provided on the fire side of the door frame 101.

[0046] In a further embodiment, such as Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the cooling structure 500 includes a main water pipe 501 and a spray pipe 502. The main water pipe 501 is embedded in the bottom of the door frame 101 and connected to a water source. A valve assembly 504 that cooperates with the square rod 218 is provided on the main water pipe 501. The valve assembly 504 is fixed in the mounting groove 103 at the bottom of the side groove 102. The valve assembly 504 automatically opens after the square rod 218 is inserted into the bottom of the side groove 102 and automatically closes after the square rod 218 is rolled up with the roller shutter 203. The spray pipe 502 is provided on the top surface of the door frame 101 and is connected to the main water pipe 501. The spray pipe 502 has nozzles 503 that spray water downwards evenly arranged along the width direction of the door frame 101.

[0047] In a further embodiment, such as Figure 5 , Figure 6 , Figure 9As shown, the valve assembly 504 includes a valve body 505 disposed in the mounting groove 103. The valve body 505 has a first water channel 506 and a second water channel 507 respectively formed at both ends, which are interconnected and connected to the main water pipe 501. The inner diameter of the first water channel 506 is larger than the inner diameter of the second water channel 507. The first water channel 506 is located on the water source side of the main water pipe 501, while the second water channel 507 is located on the spray pipe 502 side of the main water pipe 501. The first water channel 506 and the second water channel 507 are connected by a guide cone surface 513. The first water channel 506 contains… A sphere 508 with a diameter between the inner diameter of the first water channel 506 and the inner diameter of the second water channel 507 is provided. A guide sleeve 509 communicating with the guide cone surface 513 is provided at the upper end of the valve body 505. A first push rod 510 slides vertically inside the guide sleeve 509. The upper and lower ends of the first push rod 510 are respectively engaged with the square rod 218 and the sphere 508. A second spring 512 that drives the first push rod 510 to move upward is provided in the annular groove of the inner wall of the guide sleeve 509. The two ends of the second spring 512 are respectively connected to the inner wall of the annular groove and the second compression spring ring 511 on the first push rod 510.

[0048] In this invention, the cylinder 204 that makes up the roller shutter 203 and the honeycomb groove 205 provided on the outer surface of the cylinder 204 can effectively increase the strength of the roller shutter 203 itself, and the structure is simple and the weight is light. The heat insulation material 208 and non-hydrodynamic fluid 209 filled in the two spaces separated by the longitudinal partition 206 in the cylinder 204 can respectively achieve the functions of heat insulation and heat preservation and resisting explosion impact. At the same time, the porous material 210 filled in the honeycomb groove 205 can partially absorb the explosion impact force, effectively weaken the damage of the explosion impact to the curtain 200. At the same time, it simplifies the explosion-proof structure of the roller shutter 203 door and reduces the manufacturing cost. In this invention, the pressure relief holes 207 on the cylinders 204 that make up the roller shutter 203, along their axes, are blocked by adjacent cylinders 204 during a fire. However, in the event of an explosion or a sudden increase in pressure, they rotate 90 degrees to effectively relieve the blast impact. Furthermore, the pressure relief holes 207 on all the cylinders 204 of the roller shutter 203 are evenly distributed across the curtain surface rather than concentrated in one location. This effectively increases the pressure relief area without weakening the strength of the roller shutter 203, thus achieving effective pressure relief. Simultaneously, it simplifies the pressure relief structure of the roller shutter 203 and reduces manufacturing costs. The first servo motor 306 in this invention only consumes energy to drive and store energy in the spiral spring 311 when the roller shutter 203 is falling. When the roller shutter 203 rises, it automatically rises under the action of the energy-stored spiral spring 311 without being driven by the first servo motor 306, thereby achieving energy saving. The cooling structure 500 in this invention can form a water curtain on the fire-facing side of the roller shutter 203 after it closes, thereby achieving the purpose of cooling the roller shutter 203, extending its fireproof and heat-insulating time, and protecting it from high-temperature damage. The sealing groove on the inner wall of the side groove 102 of the door frame 101 can effectively prevent air convection on both sides of the roller shutter 203 when the seal between it and the roller shutter 203 fails, achieving further fireproof and heat-insulating effects.

[0049] The operation flow of this invention is as follows: In the initial state, the roller blind 203 of the curtain body 200 is in the retracted state, and the spiral spring 311 is in the compressed state. The pressure relief holes 207 on any adjacent cylinders 204 in the roller blind 203 are not opposite each other. The two sixth gears 604 in the second drive assembly separate from the second gear 220 on the square rod 218 at the bottom of the roller blind 203, and the second push rod 601 rises to its limit height under the action of the corresponding third spring 602. The locking rod 401 in the locking structure 400 is in the limit position of being deeply inserted into the side groove 102 under the action of the first spring 405. The first push rod 510 of the valve assembly 504 in the cooling structure 500 disengages upward from the guide cone surface 513 under the action of the second spring 512 and protrudes upward from the guide sleeve 509. The ball 508 closes the second water channel 507 under the action of water pressure in the first water channel 506 and under the guidance of the guide cone surface 513.

[0050] When a fire occurs, the temperature sensor 310 on the door frame 101 senses the temperature rise and transmits the signal to the first servo motor 306. The first servo motor 306 drives the two winding wheels 302 to rotate. The two winding wheels 302 wind the pull rope 303 and together pull the roller shutter 203 downward through the square rod 218. The roller shutter 203 moves downward along the side groove 102 of the door frame 101 to close.

[0051] During the descent of the roller blind 203, the roller blind 203 detaches from the roller drum 201. As the roller blind 203 on the roller drum 201 changes from a rolled-up state to a vertically unfolded state, the first slat 213 between adjacent cylinders 204 will swing. The swinging of the first slat 213 will cause the corresponding two cylinders 204 to rotate relative to each other due to the interaction of the two first gears 216 on the first pin 212. At the same time, the descent of the roller blind 203 will drive the roller drum 201 to rotate passively, and the roller drum 201 will further compress the spiral spring 311 through the end shaft 202 to store energy.

[0052] When the square rod 218 is fully inserted into the bottom of the side groove 102, the driving inclined surface 402 end of the locking rod 401 in the locking structure 400 is exactly opposite to the locking groove 223 on the square rod 218. Under the action of the first spring 405, the locking rod 401 is inserted into the locking groove 223 and forms a resistance against the first pressure sensor 406. The first pressure sensor 406 transmits a signal to the first servo motor 306, causing the first servo motor 306 to stop running. At this time, the roller shutter 203 is completely detached from the roller drum 201 and completes the vertical unfolding state. At this time, the pressure relief hole 207 on the cylinder 204 in the roller shutter 203 is exactly vertically opposite, and the pressure relief hole 207 on the cylinder 204 is closed by the adjacent cylinder 204.

[0053] When the square rod 218 is fully inserted into the bottom of the side groove 102, the square rod 218 presses down against the first push rod 510 in the valve assembly 504 and compresses the second spring 512. The first push rod 510 is inserted into the space where the guide cone surface 513 is located and forms an eccentric pressure on the ball 508, thereby causing the ball 508 to disengage from the second water channel 507 and open the second water channel 507. The water in the main water pipe 501 reaches the nozzle 503 of the spray pipe 502 under the action of the water source pressure and is sprayed out, forming a water curtain on the fire-facing side of the roller shutter 203 to cool down the roller shutter 203.

[0054] After the square rod 218 is fully inserted into the bottom of the side groove 102, the two sixth gears 604 in the second drive structure 600 establish a one-to-one meshing relationship with the two second gears 220 at both ends of the square rod 218.

[0055] The heat-insulating material 208 inside the cylinder 204 of the roller shutter 203, located on the fire-facing side, can effectively block the high temperature on the fire-facing side. When the pressure on the fire-facing side of the non-Newtonian fluid inside the cylinder 204 increases sharply or an explosion occurs, it can effectively increase the strength of the roller shutter 203, resisting the explosive impact damage. Simultaneously, the honeycomb grooves 205 on the surface of the cylinder 204 and the porous material 210 filling the honeycomb grooves 205 can absorb the explosive impact to a certain extent while effectively increasing the strength of the roller shutter 203.

[0056] When an explosion occurs on the fire-facing side or the pressure on the fire-facing side increases sharply, the second pressure sensor 608 on the fire-facing side of the door frame 101 transmits a signal to the two second servo motors 607 in the second drive structure 600. The two second servo motors 607 drive all cylinders 204 to rotate 90 degrees through the corresponding eighth gear 606, seventh gear 605, sixth gear 604, second gear 220, third gear 221 and the first gear 216 of the first round pin 212 at the end of the cylinder 204, respectively. This allows the pressure relief holes 207 on all cylinders 204 of the roller shutter 203 to connect the fire-facing and back-fire-facing sides. The high pressure from the explosion on the fire-facing side is effectively relieved through the pressure relief holes 207, thereby effectively buffering the explosion impact and protecting the roller shutter 203 from being damaged by the explosion impact.

[0057] The size and power of the first servo motor 306 and the second servo motor 607 in the schematic diagram of this invention are for illustrative purposes only. In actual applications, the first servo motor 306 and the second servo motor 607 of the appropriate size or power shall be adopted according to actual needs.

Claims

1. A composite steel fireproof roller shutter door for building applications, featuring energy-saving, heat-insulating, and pressure-relief functions, used for fire isolation in corridors, characterized in that... include: A curtain body is used to isolate and prevent fire in a corridor. The curtain body includes a roller drum installed at the top of the corridor. A roller blind is installed on the cylindrical surface of the roller drum. The roller blind is composed of several cylindrical tubes arranged in sequence and closed at both ends. The inside of each cylindrical tube is divided into two semi-cylindrical spaces by a longitudinal partition. The two semi-cylindrical spaces are respectively filled with heat insulation material corresponding to the fire-facing side and non-Newtonian fluid corresponding to the fire-repellent side. A through pressure relief hole is opened on the cylindrical surface of the tube. The surface of the tube is densely covered with honeycomb grooves. Porous material is placed in the honeycomb grooves. A sealing layer covering the honeycomb grooves is provided on the surface of the tube. The sealing layers on adjacent tubes are squeezed and sealed against each other. A square rod is hinged to the tube at the bottom of the roller blind. A second sealing gasket that cooperates with the sealing layer is provided on the square rod. The frame provides the roller blind with roll-up guides and retraction space. A locking structure that engages with the locking groove on the square rod is used to automatically lock the roller shutter as it closes. The first drive structure is used to automatically drive the roller to lower and close the shutter in the event of a fire, and to automatically drive the roller to retract the shutter in an energy-saving manner after the fire is extinguished and the locking structure is unlocked. The cooling structure is used to cool the fire-facing side of the roller shutter by water when it is closed for fire isolation. The second drive structure is used to release pressure by driving the cylinder in the roller shutter to rotate, thereby opening the pressure relief hole on the cylinder to release pressure when an explosion or a sharp increase in pressure occurs on the fire side of the roller shutter. The frame includes a door frame, the inner wall of which has a side groove that matches the four sides of the roller shutter, the top of which has a roller box for installing the roller, and the bottom of which has an opening that communicates with the upper side groove of the door frame and matches the roller shutter. Two guide rollers that guide the roller shutter vertically up and down in the opening are provided at the opening. Two coaxial first round pins are provided at both ends of the cylinder. The two first round pins on the same end side of adjacent cylinders are hinged through a first plate and two meshing first gears are fixed on the two first round pins on the same end side. The first round pin on the cylinder at the top of the roller blind is hinged to the lug on the roller through a second plate. The first round pin on the cylinder at the bottom of the roller blind is hinged to the second round pin at the end of the square rod through a third plate. The second round pin is provided with a second gear. The second gear is connected to the first gear on the first round pin of the adjacent cylinder through the third gear on the third plate. The first drive structure includes a spiral spring and two winding wheels. The two winding wheels are symmetrically arranged on both sides of the top of the door frame via a first rotating shaft. A pull rope is wound on the winding wheel. The end of the pull rope passes over a fixed pulley arranged on the corresponding side of the bottom of the door frame and is connected to a rotating sleeve on the second round pin at the corresponding end of the square rod. Two fourth gears are arranged on the two first rotating shafts. The two fourth gears mesh one-to-one with two fifth gears on the synchronous shaft. The synchronous shaft is rotatably arranged on the door frame. One of the first rotating shafts is driven by a first servo motor arranged on the back side of the door frame. The first servo motor is electrically connected to a temperature sensor arranged on the front side of the door frame. The spiral spring is arranged in a round shell at one end of the reel box. The two ends of the spiral spring are respectively connected to the inner wall of the reel box and the end shaft at the end of the reel. A damper is fitted between the end shaft and the round hole at the end of the reel box. The lock structure includes a lock rod, which is slidably disposed in a second groove connected to the side groove on the back side of the bottom of the door frame. The lock rod cooperates with the lock groove on the square rod and a first pressure sensor in the lock groove. The inner end of the lock rod is provided with a driving slope that does not obstruct the downward insertion of the square rod into the bottom of the side groove. The outer end of the lock rod is provided with a pull ring. A first spring that drives the lock rod to move into the side groove is disposed in an annular groove on the inner wall of the second groove. The two ends of the first spring are respectively connected to the inner wall of the annular groove and a first compression spring ring on the lock rod. The second drive structure includes two second push rods that correspond one-to-one with the second round pins at both ends of the square rod. The second push rod slides vertically in the first groove at the bottom of the side groove. A third spring is provided in the first groove to drive the second push rod to move upward. The top of the second push rod is provided with a sixth gear that meshes with the second gear on the corresponding side second round pin through a second rotating shaft. A seventh gear is provided on the second rotating shaft. A second servo motor is provided on the second push rod. An eighth gear that meshes with the seventh gear is provided on the output shaft of the second servo motor. The second servo motor is electrically connected to a second pressure sensor provided on the fire side of the door frame.

2. The composite steel fireproof rolling door with energy-saving, heat-insulating and pressure-relieving functions for building according to claim 1, characterized in that, The inner walls on both sides of the side groove are provided with maze grooves.

3. The composite steel fireproof rolling door with energy-saving, heat-insulating and pressure-relieving functions for building according to claim 1, characterized in that, A first sealing gasket that mates with the cylinder and the square rod is provided at the inner edge of the side groove.

4. The composite steel fireproof rolling door with energy-saving, heat-insulating and pressure-relieving functions for building according to claim 1, characterized in that, The cooling structure includes a main water pipe and a spray pipe. The main water pipe is buried in the bottom of the door frame and connected to a water source. A valve assembly that cooperates with a square rod is installed on the main water pipe. The valve assembly is fixed in the mounting groove at the bottom of the side groove. The valve assembly automatically opens after the square rod is inserted into the bottom of the side groove and automatically closes after the square rod is rolled up with the curtain. The spray pipe is located on the top side of the door frame and is connected to the main water pipe. The spray pipe has nozzles that spray water downwards evenly along the width of the door frame.

5. The composite steel fireproof rolling door with energy-saving, heat-insulating and pressure-relieving functions for building according to claim 4, characterized in that, The valve assembly includes a valve body disposed in an installation groove. The valve body has a first water channel and a second water channel that are interconnected and connected to the main water pipe at both ends. The inner diameter of the first water channel is larger than that of the second water channel. The first water channel is located on the water source side of the main water pipe, while the second water channel is located on the spray pipe side of the main water pipe. The first water channel and the second water channel are connected by a guide cone surface. A sphere with a diameter between the inner diameters of the first and second water channels is disposed in the first water channel. A guide sleeve communicating with the guide cone surface is disposed at the upper end of the valve body. A first push rod slides vertically in the guide sleeve. The upper and lower ends of the first push rod cooperate with a square rod and a sphere, respectively. A second spring that drives the first push rod to move upward is disposed in the annular groove of the inner wall of the guide sleeve. The two ends of the second spring are connected to the inner wall of the annular groove and a second compression spring ring on the first push rod, respectively.

Images