Composite steel fireproof rolling shutter door with energy-saving, heat-insulating and pressure-releasing functions for building

Abstract

The invention belongs to the technical field of fireproof rolling shutter doors, and particularly relates to a composite type steel fireproof rolling shutter door which is used for buildings and has energy-saving, heat-preserving and pressure-releasing functions, and the composite type steel fireproof rolling shutter door comprises a shutter body, a first driving structure and the like, the first driving structure is used for automatically driving the winding drum to enable the roller shutter to fall down and be closed when a fire disaster happens and automatically driving the winding drum to conduct energy-saving winding on the roller shutter after the fire disaster is extinguished and the lock structure is unlocked. The pressure relief holes formed in the cylinders forming the roller shutter along the axes of the cylinders are in the state of being shielded by the adjacent cylinders when a fire disaster occurs, and the pressure relief holes rotate by 90 degrees when explosion occurs or the pressure is sharply increased, so that effective pressure relief is formed on explosion impact; and the pressure relief holes in all the cylinders on the roller shutter are uniformly distributed on the surface of the roller shutter instead of being intensively formed in a certain part, so that the pressure relief area is effectively increased while the strength of the roller shutter is not weakened, the purpose of effective pressure relief is achieved, the pressure relief structure of the roller shutter door is simplified, and the manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fireproof rolling shutter door, and particularly relates to a composite steel fireproof rolling shutter door with energy-saving, heat-insulating and pressure relief functions for buildings. BACKGROUND

[0002] The fireproof rolling shutter door is one of the measures for fireproof separation of buildings, and is usually used on firewalls, stairway entrances or pipe opening parts, and is required to be able to separate smoke and fire. The fireproof door plays an important role in preventing the spread and spread of smoke and fire and reducing losses.

[0003] The strength of the existing fireproof rolling shutter door is insufficient due to the structural limitation, and cannot meet the fireproof and explosion resistance requirements of the fireproof rolling shutter door, and is prone to deformation when an explosion occurs or the pressure is too large.

[0004] The patent with the application number 202020089381.6 enhances the strength of the curtain piece by welding reinforcing ribs, and the welding reinforcing ribs increase the weight of the curtain body, resulting in large driving energy consumption. The patent with the application number 92106488.8 assists the curtain body to withstand the explosion impact on the fire side by horizontally moving two explosion-resistant rods to the middle position of the curtain surface on the backfire side after the curtain body falls to form support for the curtain body. The explosion-resistant rods make the structure of the fireproof rolling shutter door more complex and increase the cost.

[0005] The existing fireproof rolling shutter door sets pressure relief openings on the upper and lower ends or the left and right sides to relieve and buffer the explosion impact on the fire side. The pressure relief structure in the pressure relief opening is actively or passively opened when a fire occurs. The area of the pressure relief opening needs to have a large enough area to achieve effective pressure relief effect. The opening will reduce the lightness of the fireproof rolling shutter door, and the pressure relief structure in the pressure relief opening is complex.

[0006] In addition, the existing fireproof rolling shutter door needs to be driven by a motor for rising or falling, resulting in large energy consumption of the motor and not energy-saving and environment-friendly.

[0007] The present application designs a composite steel fireproof rolling shutter door with energy-saving, heat-insulating and pressure relief functions for buildings to solve the above problems. SUMMARY

[0008] Based on this, it is necessary to provide a composite steel fireproof rolling shutter door with energy saving, heat preservation and pressure relief function for building in view of the problems existing in the current fireproof rolling shutter door, the pressure relief holes opened on the cylinder along the axis of the cylinder in the invention are in the state of being blocked by the adjacent cylinder in the event of fire, and are rotated by 90 degrees to form effective pressure relief against explosion impact when explosion or pressure increases sharply, and the pressure relief holes on all the cylinders of the rolling shutter are evenly distributed on the rolling shutter surface instead of being concentrated in a certain part, which effectively increases the pressure relief area without weakening the strength of the rolling shutter, so as to achieve the purpose of effective pressure relief, and simplifies the pressure relief structure of the rolling shutter door and reduces the manufacturing cost.

[0009] The above-mentioned purpose is realized by the following technical scheme: A composite steel fireproof rolling shutter door with energy saving, heat preservation and pressure relief function for building is used for fire isolation in corridors, comprising: A curtain body is used for fire isolation in corridors, the curtain body comprises a winding drum arranged at the top of the corridor, a rolling shutter is arranged on the cylindrical surface of the winding drum, the rolling shutter is composed of a plurality of cylinders arranged in sequence and connected and closed at both ends, the cylinder is divided into two half-cylinder spaces by a longitudinal partition plate, the two half-cylinder spaces are respectively filled with heat insulation material corresponding to the fire side and non-Newtonian fluid corresponding to the backfire side, a through pressure relief hole is opened on the cylindrical surface of the cylinder, a plurality of honeycomb grooves are densely arranged on the surface of the cylinder, a porous material is arranged in the honeycomb grooves, a sealing layer covering the honeycomb grooves is arranged on the surface of the cylinder, the sealing layers on the adjacent cylinders are pressed and sealed with each other, a square rod is hinged to the cylinder at the bottom end of the rolling shutter, and a second sealing gasket matched with the sealing layer is arranged on the square rod.

[0010] A frame body is used for providing winding and rolling guide rails and rolling accommodation space for the rolling shutter.

[0011] A lock structure matched with the lock groove on the square rod is used for automatically locking the falling and closing rolling shutter.

[0012] A first driving structure is used for automatically driving the winding drum to make the rolling shutter fall and close in the event of fire, and automatically driving the winding drum to roll up the rolling shutter after the fire is extinguished and the lock structure is unlocked.

[0013] A cooling structure is used for water cooling the fire side of the rolling shutter when the rolling shutter falls and closes for fire isolation.

[0014] A second driving structure is used for opening the pressure relief holes on the cylinder by driving the cylinder in the rolling shutter to rotate when explosion or pressure increases sharply on the fire side of the rolling shutter.

[0015] In one of the embodiments, the frame comprises a door frame, inner walls of the door frame are provided with edge grooves matched with four edges of the roller shutter, a winding box for mounting the winding drum is arranged on the top of the door frame, the bottom of the winding box is provided with an opening communicated with the upper edge groove of the door frame and matched with the roller shutter, two guide rollers for guiding the roller shutter vertically up and down in the opening are arranged at the opening.

[0016] In one of the embodiments, labyrinth grooves are arranged on the inner walls of the two sides of the edge groove.

[0017] In one of the embodiments, the inner wall edges of the edge groove are provided with first sealing pads matched with the cylinder and the square rod.

[0018] In one of the embodiments, the two ends of the cylinder are provided with two coaxial first round pins, the two first round pins on the same end side of the cylinder are hingedly connected by a first batten and two first gears meshing with each other are fixed on the two first round pins on the same end side, the first round pin on the cylinder at the top end of the roller shutter is hingedly connected to the supporting lug on the winding drum by a second batten, the first round pin on the cylinder at the bottom end of the roller shutter is hingedly connected to the second round pin on the end of the square rod by a third batten, the second round pin is provided with a second gear, and the second gear is in transmission connection with the first gear on the first round pin of the adjacent cylinder through a third gear on the third batten.

[0019] In one of the embodiments, the first driving structure comprises a spiral spring and two winding wheels, the two winding wheels are symmetrically arranged on the two inner sides of the top of the door frame through a first rotating shaft, a pull rope is wound on the winding wheel, the end of the pull rope is connected to a rotating sleeve on the second round pin on the corresponding end of the square rod through a fixed pulley arranged in the corresponding side of the bottom of the door frame, two fourth gears are arranged on the two first rotating shafts, the two fourth gears and two fifth gears on the synchronous shaft are in one-to-one corresponding meshing, the synchronous shaft is rotationally arranged on the door frame, one of the first rotating shafts is in transmission connection with a first servo motor arranged on the back side of the door frame, the first servo motor is in electrical connection with 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 winding box, the two ends of the spiral spring are connected to the inner wall of the winding box and an end shaft at the end of the winding drum, and a damper is arranged between the end shaft and the round hole at the end of the winding box.

[0020] In one of the embodiments, the lock structure comprises a lock rod, the lock rod is slidingly arranged in a second sliding groove communicated with the edge groove on the bottom of the back side of the door frame, the lock rod is matched 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 for preventing the square rod from being inserted into the bottom of the edge groove, the outer end of the lock rod is provided with a pull ring, a ring groove in the inner wall of the second sliding groove is provided with a first spring for driving the lock rod to move into the edge groove, and the two ends of the first spring are connected to the first pressure spring ring on the inner wall of the ring groove and the lock rod.

[0021] In one of the embodiments, the second driving structure comprises two second jacks corresponding to the second round pins at the two ends of the square rod, the second jacks vertically slide in the first sliding groove at the bottom of the side groove, the first sliding groove is provided with a third spring driving the second jack to move upward, the top end of the second jack is provided with a sixth gear cooperating with the second gear on the corresponding side second round pin through a second rotating shaft, the second rotating shaft is provided with a seventh gear, the second jack is provided with a second servo motor, the output shaft of the second servo motor is provided with an eighth gear meshing with the seventh gear, and the second servo motor is electrically connected with a second pressure sensor arranged on the fire side of the door frame surface.

[0022] In one of the embodiments, the cooling structure comprises a main water pipe and a water spraying pipe, the main water pipe is buried in the bottom of the door frame and connected with a water source, the main water pipe is provided with a valve assembly cooperating with the square rod, the valve assembly is fixed in the mounting groove at the bottom of the side groove, the valve assembly is automatically opened after the square rod is inserted into the bottom of the side groove and automatically closed after the square rod is retracted with the roller shutter, and the water spraying pipe is arranged on the fire side of the top of the door frame and communicated with the main water pipe.

[0023] In one of the embodiments, the valve assembly comprises a valve body arranged in the mounting groove, the two ends of the valve body are respectively provided with a first water channel and a second water channel communicated with each other and the main water pipe, 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, and the second water channel is located on the water spraying pipe side of the main water pipe, the first water channel and the second water channel are transitionally connected through a guide conical surface, a spherical ball with a diameter between the inner diameters of the first water channel and the second water channel is arranged in the first water channel, the upper end of the valve body is provided with a guide sleeve communicated with the guide conical surface, a first jack vertically slides in the guide sleeve, the upper and lower ends of the first jack cooperate with the square rod and the spherical ball respectively, a second spring driving the first jack to move upward is arranged in the ring groove of the inner wall of the guide sleeve, and the two ends of the second spring are respectively connected with the second compression spring ring on the first jack and the inner wall of the ring groove.

[0024] The beneficial effects of the present application are: 1、The cylindrical barrel and the honeycomb grooves arranged on the outer surface of the cylindrical barrel in the present application can effectively increase the strength of the roller shutter itself, and the structure is simple and light in weight, the heat insulation material and the non-Newtonian fluid filled in the two spaces separated by the longitudinal partition plate in the cylindrical barrel can respectively realize the functions of heat insulation and explosion impact resistance, at the same time, the porous material filled in the honeycomb grooves can partially absorb the explosion impact force, effectively weakening the damage of the explosion impact to the curtain body, at the same time, the anti-explosion structure of the roller shutter door is simplified, and the manufacturing cost is reduced.

[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 is a schematic view of a curtain body; Figure 15 are two structural sectional views of a curtain body; Figure 16 is a cylindrical structure and its first sectional view; Figure 17 is a second sectional view of a cylinder; Figure 18 is a cylindrical structure and its third sectional view; Reference signs in the drawings: 100, frame; 101, door frame; 102, side groove; 103, mounting groove; 104, first sliding groove; 105, second sliding groove; 106, labyrinth groove; 108, winding box; 109, opening; 110, round shell; 111, guide roller; 112, first sealing gasket; 200, curtain body; 201, winding drum; 202, end shaft; 203, curtain; 204, cylinder; 205, honeycomb groove; 206, longitudinal partition plate; 207, pressure relief hole; 208, thermal insulation material; 209, non-Newtonian fluid; 210, porous material; 211, sealing layer; 212, first round pin; 213, first slat; 214, second slat; 215, 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, lock groove; 300, first driving 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, synchronization shaft; 310, temperature sensor; 311, volute spring; 312, damper; 400, lock structure; 401, lock rod; 402, driving slope; 403, pull ring; 404, first compression spring ring; 405, first spring; 406, first pressure sensor; 500, cooling structure; 501, main water pipe; 502, water spraying pipe; 503, nozzle; 504, valve assembly; 505, valve body; 506, first water channel; 507, second water channel; 508, round ball; 509, guide sleeve; 510, first top rod; 511, second compression spring ring; 512, second spring; 513, guide cone surface; 600, second driving structure; 601, second top 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 DESCRIPTION

[0030] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0031] The numbers of components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and have no technical meaning. The "connection" and "coupling" in this application include direct and indirect connection (coupling) unless otherwise specified. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0033] As shown in Figures 1-18 A composite steel fireproof curtain 203 door with heat preservation and pressure relief function is used for fire isolation in corridors, comprising: The curtain body 200 is used for isolating and preventing fire in the corridor, and comprises a winding drum 201 arranged at the top of the corridor, a winding curtain 203 arranged on the cylindrical surface of the winding drum 201, a plurality of cylindrical drums 204 arranged in sequence and connected and sealed at both ends, two half-cylindrical spaces separated by a longitudinal partition plate 206 in the cylindrical drum 204, heat insulation material 208 corresponding to the fire side and non-Newtonian fluid corresponding to the backfire side filled in the two half-cylindrical spaces respectively, a through pressure relief hole 207 arranged on the cylindrical surface of the cylindrical drum 204, a plurality of honeycomb grooves 205 arranged on the surface of the cylindrical drum 204, a porous material 210 arranged in the honeycomb groove 205, a sealing layer 211 arranged on the surface of the cylindrical drum 204 and covering the honeycomb groove 205, the sealing layers 211 on the adjacent cylindrical drums 204 being pressed and sealed with each other, and a square rod 218 hinged to the cylindrical drum 204 at the bottom end of the winding curtain 203, and a second sealing gasket 222 arranged on the square rod 218 and matched with the sealing layer 211.

[0034] The frame body 100 is used for providing winding and releasing guide rails and winding storage space for the winding curtain 203.

[0035] The lock structure 400 matched with the lock groove 223 on the square rod 218 is used for automatically locking the falling and closing winding curtain 203.

[0036] The first driving structure 300 is used for automatically driving the winding drum 201 to make the winding curtain 203 fall and close when the fire occurs, and automatically driving the winding drum 201 to make the winding curtain 203 be energy-savingly wound after the fire is eliminated and the lock structure 400 is unlocked.

[0037] The cooling structure 500 is used for water-cooling the fire side of the winding curtain 203 when the winding curtain 203 falls and closes to isolate and prevent fire.

[0038] The second driving structure 600 is used for opening the pressure relief hole 207 on the cylindrical drum 204 by driving the cylindrical drum 204 to rotate when the explosion or the pressure of the fire side of the winding curtain 203 is sharply increased.

[0039] In further embodiments, as shown in Figure 8 , Figure 11 , Figure 12 , Figure 13 The frame body 100 comprises a door frame 101, an edge groove 102 arranged on the inner wall of the door frame 101 and matched with four edges of the winding curtain 203, a winding box 108 arranged at the top of the door frame 101 and used for mounting the winding drum 201, an opening 109 arranged at the bottom of the winding box 108 and communicated with the edge groove 102 on the door frame 101 and matched with the winding curtain 203, and two guide rollers 111 arranged at the opening 109 and used for guiding the winding curtain 203 to vertically move up and down in the opening 109.

[0040] In further embodiments, as shown in Figure 10 , Figure 11 , Figure 12 , Figure 13 the inner walls of the two sides of the edge groove 102 are provided with labyrinth grooves 106.

[0041] In further embodiments, as shown in Figure 8 , Figure 9 , Figure 10 the edge of the inner wall of the edge groove 102 is provided with a first sealing gasket 112 cooperating with the cylinder 204 and the square rod 218.

[0042] In further embodiments, as shown in Figure 14 , Figure 15 , Figure 16 the two ends of the cylinder 204 are provided with two coaxial first round pins 212, the two first round pins 212 on the same end side of the cylinder 204 are hinged through a first batten 213, and the two first round pins 212 on the same end side are provided with two first gear wheels 216 meshing with each other, the first round pin 212 on the cylinder 204 at the top end of the roller shutter 203 is hinged through a second batten 214 with a supporting lug 215 on the roller 201, the first round pin 212 on the cylinder 204 at the bottom end of the roller shutter 203 is hinged through a third batten 217 with a second round pin 219 at the end of the square rod 218, the second round pin 219 is provided with a second gear wheel 220, and the second gear wheel 220 is in transmission connection with the first gear wheel 216 on the first round pin 212 of the adjacent cylinder 204 through a third gear wheel 221 on the third batten 217.

[0043] In further embodiments, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the first driving structure 300 includes a spiral 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 through the first rotating shaft 301, the winding wheel 302 is wound with a pull rope 303, the end of the pull rope 303 is connected with the rotating sleeve 305 on the second circular pin 219 of the corresponding end of the square rod 218 through the fixed pulley 304 arranged in the corresponding side of the bottom of the door frame 101, the two first rotating shafts 301 are provided with two fourth gears 307, the two fourth gears 307 are in one-to-one correspondence with the two fifth gears 308 on the synchronous shaft 309, the synchronous shaft 309 is rotationally arranged on the door frame 101, one of the first rotating shafts 301 is in transmission connection with the first servo motor 306 arranged on the backfire side of the door frame 101, the first servo motor 306 is in electrical connection with the temperature sensor 310 arranged on the fire side of the door frame 101, the spiral spring 311 is arranged in the circular shell 110 at one end of the winding box 108, the two ends of the spiral spring 311 are respectively connected with the inner wall of the winding box 108 and the end shaft 202 at the end of the winding drum 201, and the damper 312 is matched between the end shaft 202 and the circular hole at the end of the winding box 108.

[0044] In further embodiments, as shown in Figure 7 、 Figure 9 、 Figure 12 As shown, the lock structure 400 includes a lock rod 401, the lock rod 401 is slidably arranged in the second sliding groove 105 on the bottom of the door frame 101 on the backfire side and in communication with the edge groove 102, the lock rod 401 is matched 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 for the square rod 218 not to form an obstruction when inserted into the bottom of the edge groove 102, the outer end of the lock rod 401 is provided with a pull ring 403, the ring groove on the inner wall of the second sliding groove 105 is provided with a first spring 405 for driving the lock rod 401 to move into the edge groove 102, and the two ends of the first spring 405 are respectively connected with the first pressure spring ring 404 on the lock rod 401 and the inner wall of the ring groove.

[0045] In further embodiments, as shown in Figure 2 、 Figure 3As shown, the second driving structure 600 includes two second jacks 601 corresponding to the second round pins 219 at both ends of the square rod 218, the second jacks 601 vertically sliding in the first sliding groove 104 at the bottom of the side groove 102, the first sliding groove 104 being provided with a third spring 602 driving the second jacks 601 to move upward, the top end of the second jacks 601 being provided with a sixth gear 604 cooperating with the second gear 220 on the corresponding side second round pin 219 through a second rotating shaft 603, the second rotating shaft 603 being provided with a seventh gear 605, the second jacks 601 being provided with a second servo motor 607, the output shaft of the second servo motor 607 being provided with an eighth gear 606 meshing with the seventh gear 605, the second servo motor 607 being electrically connected with a second pressure sensor 608 arranged on the fire side of the door frame 101.

[0046] In further embodiments, as shown in 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 water spraying pipe 502, the main water pipe 501 being buried in the bottom of the door frame 101 and being connected with a water source, the main water pipe 501 being provided with a valve assembly 504 cooperating with the square rod 218, the valve assembly 504 being fixed in the mounting groove 103 at the bottom of the side groove 102, the valve assembly 504 being automatically opened after the square rod 218 is inserted into the bottom of the side groove 102 and being automatically closed after the square rod 218 is rolled up with the roller shutter 203, the water spraying pipe 502 being arranged on the fire side of the top of the door frame 101 and being communicated with the main water pipe 501, the water spraying pipe 502 being uniformly provided with nozzles 503 spraying water downward along the width direction of the door frame 101.

[0047] In further embodiments, as shown in Figure 5 、 Figure 6 、 Figure 9As shown, the valve assembly 504 includes a valve body 505 arranged in the mounting groove 103, two ends of the valve body 505 are respectively provided with a first water channel 506 and a second water channel 507 which are communicated with each other and the main water pipe 501, the inner diameter of the first water channel 506 is larger than that of the second water channel 507, the first water channel 506 is located at the water source side of the main water pipe 501, and the second water channel 507 is located at the water jet pipe 502 side of the main water pipe 501, the first water channel 506 and the second water channel 507 are connected through a guide cone surface 513, a spherical ball 508 with a diameter between the inner diameters of the first water channel 506 and the second water channel 507 is arranged in the first water channel 506, an upper end of the valve body 505 is provided with a guide sleeve 509 communicated with the guide cone surface 513, a first top rod 510 vertically slides in the guide sleeve 509, upper and lower ends of the first top rod 510 are respectively matched with the square rod 218 and the spherical ball 508, a second spring 512 driving the first top rod 510 to move upward is arranged in a ring groove of an inner wall of the guide sleeve 509, two ends of the second spring 512 are respectively connected with the ring groove inner wall and a second spring ring 511 on the first top rod 510.

[0048] The cylinder 204 and the honeycomb groove 205 arranged on the outer surface of the cylinder 204 can effectively increase the strength of the roller shutter 203, and the two spaces in the cylinder 204 separated by the longitudinal partition plate 206 are filled with the heat insulation material 208 and the non-Newtonian fluid 209 respectively, so that the heat insulation and explosion impact resistance functions can be realized respectively. Meanwhile, the porous material 210 filled in the honeycomb groove 205 can partially absorb the explosion impact force, effectively weaken the explosion impact on the curtain body 200, simplify the explosion-resistant structure of the roller shutter 203 door, and reduce the manufacturing cost. The pressure relief hole 207 arranged on the cylinder 204 and along the axis of the cylinder 204 is shielded by the adjacent cylinder 204 in the case of fire, and is rotated by 90 degrees to effectively relieve the explosion impact when the explosion or pressure increases sharply. The pressure relief holes 207 on all the cylinders 204 are evenly distributed on the curtain surface of the roller shutter 203 instead of being concentrated in a certain part, which effectively increases the pressure relief area without weakening the strength of the roller shutter 203, so as to achieve the purpose of effective pressure relief. The first servo motor 306 only consumes energy to drive and store energy in the spiral spring 311 when the roller shutter 203 falls, and the roller shutter 203 automatically rises under the action of the spiral spring 311 without being driven by the first servo motor 306 when the roller shutter 203 rises, so as to achieve the purpose of energy saving. The cooling structure 500 can form a water curtain on the fire side of the roller shutter 203 after the roller shutter 203 is closed, so as to achieve the purpose of cooling and temperature reduction of the roller shutter 203, prolong the fireproof and heat insulation time of the roller shutter 203, and protect the roller shutter 203 from being damaged by high temperature. The sealing groove arranged on the inner wall of the edge groove 102 of the door frame 101 can effectively prevent the air convection on both sides of the roller shutter 203 when the sealing between the roller shutter 203 and the door frame 101 fails, so as to achieve the purpose of further fireproof and heat insulation.

[0049] The operation flow of the present application is as follows: In the initial state, the roller shutter 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 shutter 203 are not opposite to each other. The two sixth gears 604 in the second drive assembly are separated from the second gear 220 on the square rod 218 at the bottom end of the roller shutter 203, and the second top rod 601 rises to the limit height under the action of the corresponding third spring 602. The lock rod 401 in the lock structure 400 is in the limit position of deeply entering the edge groove 102 under the action of the first spring 405. The first top rod 510 of the valve assembly 504 in the cooling structure 500 is separated from the guide cone surface 513 and protrudes out of the guide sleeve 509 under the action of the second spring 512, and the spherical ball 508 is closed to the second water channel 507 under the water pressure in the first water channel 506 and the guidance of the guide cone surface 513.

[0050] When the 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 are wound on the pull rope 303 and jointly pull down the roller shutter 203 through the square rod 218, the roller shutter 203 moves downward along the edge groove 102 of the door frame 101 to perform the closing operation.

[0051] In the process of falling of the roller shutter 203, the roller shutter 203 is separated from the winding drum 201, when the roller shutter 203 on the winding drum 201 changes from the winding state to the vertical expansion state, the first slat 213 between the adjacent cylinders 204 will swing, the swing of the first slat 213 will cause the relative rotation of the corresponding two cylinders 204 under the interaction of the two first gears 216 on the first round pin 212. At the same time, the winding drum 201 is passively rotated in the process of falling of the roller shutter 203, the winding drum 201 further compresses the volute spring 311 through the end shaft 202 to store energy.

[0052] When the square rod 218 is completely inserted into the bottom of the edge groove 102, the driving slope 402 end of the lock rod 401 in the lock structure 400 is just opposite to the lock groove 223 on the square rod 218, the lock rod 401 is inserted into the lock groove 223 under the action of the first spring 405 and forms the pressure on the first pressure sensor 406, the first pressure sensor 406 transmits the signal to the first servo motor 306, so that the first servo motor 306 stops running. At this time, the roller shutter 203 is completely separated from the winding drum 201 to complete the vertical expansion state, and at this time, the pressure relief hole 207 on the cylinder 204 in the roller shutter 203 is just vertically opposite, the pressure relief hole 207 on the cylinder 204 is closed by the adjacent cylinder 204.

[0053] When the square rod 218 is completely inserted into the bottom of the edge groove 102, the square rod 218 downwardly presses the first top rod 510 in the valve assembly 504 and compresses the second spring 512, the first top rod 510 is inserted into the space where the guide cone surface 513 is located and forms the eccentric pressure on the ball 508, so that the ball 508 is separated from the second water channel 507 and opens the second water channel 507, the water in the main water pipe 501 reaches the nozzle 503 of the water jet pipe 502 under the action of the water source pressure and is sprayed out, forming the water curtain for cooling and cooling the roller shutter 203 on the fire side of the roller shutter 203.

[0054] When the square rod 218 is completely inserted into the bottom of the edge groove 102, the two sixth gears 604 in the second driving structure 600 respectively establish one-to-one meshing relationship with the two second gears 220 at both ends of the square rod 218.

[0055] The heat insulation material 208 in the cylinder 204 on the side of the surface fire in the roller shutter 203 can effectively block the high temperature on the side of the surface fire. The non-Newtonian fluid in the cylinder 204 on the backfire side can effectively increase the strength of the roller shutter 203 when the pressure on the side of the surface fire increases sharply or explosion occurs, so as to resist the explosion impact damage of the explosion to the roller shutter 203. Meanwhile, the honeycomb groove 205 on the surface of the cylinder 204 and the porous material 210 filled in the honeycomb groove 205 can effectively increase the strength of the roller shutter 203 and absorb the explosion impact to a certain extent.

[0056] When the explosion occurs on the side of the surface fire or the pressure on the side of the surface fire increases sharply, the second pressure sensor 608 on the side of the surface fire of the door frame 101 transmits the signal to the two second servo motors 607 in the second driving structure 600. The two second servo motors 607 drive the whole cylinder 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 on the end of the cylinder 204 and the first circular pin 212, so that the pressure relief holes 207 on the whole cylinder 204 of the roller shutter 203 are communicated with the backfire side and the surface fire side. The explosion high pressure formed on the side of the surface fire is effectively relieved through the pressure relief holes 207, so as to effectively buffer the explosion impact and protect 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 the application are only schematic. In actual application, the first servo motor 306 and the second servo motor 607 with corresponding size or power are used 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.

2. A composite steel fireproof roller shutter door for building applications with energy-saving, heat-insulating, and pressure-relief functions as described in claim 1, characterized in that, 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 are provided at the opening to guide the roller shutter vertically up and down within the opening.

3. A composite steel fireproof roller shutter door for building applications with energy-saving, heat-insulating, and pressure-relief functions as described in claim 2, characterized in that, The inner walls on both sides of the side groove are provided with maze grooves.

4. A composite steel fireproof roller shutter door for building applications with energy-saving, heat-insulating, and pressure-relief functions as described in claim 2, 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.

5. A composite steel fireproof roller shutter door for building applications with energy-saving, heat-insulating, and pressure-relief functions as described in claim 1, characterized in that, 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.

6. A composite steel fireproof roller shutter door for building applications with energy-saving, heat-insulating, and pressure-relief functions as described in claim 2 or 5, characterized in that, 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 connected to the inner wall of the reel box and the end shaft at the end of the reel, respectively. A damper is fitted between the end shaft and the round hole at the end of the reel box.

7. A composite steel fireproof roller shutter door for building applications with energy-saving, heat-insulating, and pressure-relief functions as described in claim 1, characterized in that, 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 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.

8. A composite steel fireproof roller shutter door for building applications with energy-saving, heat-insulating, and pressure-relief functions as described in claim 5, characterized in that, 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.

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

10. A composite steel fireproof roller shutter door for building applications with energy-saving, heat-insulating, and pressure-relief functions according to claim 9, 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 and second water channels 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 within 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 within the guide sleeve. The upper and lower ends of the first push rod engage with a square rod and a sphere, respectively. A second spring driving the first push rod upward is disposed within an annular groove on 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.

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