Inorganic double-track double-curtain type fireproof rolling shutter door
By introducing a sealing structure of a card slot bottom plate and a pin strip into the inorganic double-track double-curtain fireproof rolling shutter door, as well as a cooling measure of a humidifying spray pipe, the problems of smoke leakage and insufficient fire resistance time are solved, achieving stronger sealing and longer fire resistance time.
Patent Information
- Application Number
- CN202520175078.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-27
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-27
AI Technical Summary
Existing inorganic double-track double-curtain fireproof rolling shutters have problems with smoke leakage and insufficient fire resistance time when closed, especially the excessive gap between the curtain and the ground, which leads to smoke leakage, and the fire resistance time is only three hours.
The design of the card slot base plate and the pin strip is used to enhance the sealing effect, and the curtain surface is moistened and cooled by the humidifying spray pipe to extend the fire resistance time.
It effectively prevents smoke from leaking out from the gap between the curtain and the ground, improves the barrier effect of the fireproof roller shutter door, and extends the fire resistance time.
Smart Images

Figure CN223767425U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fireproof rolling shutter door structure, and in particular to an inorganic double-track double-curtain fireproof rolling shutter door. Background Technology
[0002] Fire-resistant roller shutters are an important building fire protection facility. Among them, double-track double-curtain inorganic fire-resistant roller shutters are widely praised for their excellent performance. With their unique structural design, superior performance characteristics, and wide range of applications, double-track double-curtain inorganic fire-resistant roller shutters have become an important choice in the field of building fire protection. They can not only effectively prevent the spread of fire and smoke, but also buy valuable time for personnel evacuation and fire rescue, making them an important facility for ensuring building safety.
[0003] The double-track, double-curtain inorganic fire-resistant roller shutter door consists of two fire-resistant curtains with an air layer in between. The two curtains are raised and lowered synchronously via a single electromechanical drive with dual transmission shafts. In existing inorganic double-track, double-curtain fire-resistant roller shutter doors, the double-layer inorganic curtains close downwards along the double-track frame. This method has several problems: firstly, the gap between the inorganic curtains and the ground is too large, allowing some smoke to leak out and affecting safe evacuation; secondly, within the specified limits, the fire resistance time is only three hours, and there is no wetting and cooling structure between the inorganic curtains to extend the fire resistance time and the fire-resistant roller shutter door's blocking time. Utility Model Content
[0004] The main purpose of this utility model is to provide an inorganic double-track double-curtain fireproof rolling shutter door, which can effectively solve the problems in the background technology.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An inorganic double-track double-curtain fireproof roller shutter door includes a roller shutter door housing. Double track frames are fixedly installed at both ends of the lower surface of the roller shutter door housing. A slotted bottom plate is fixedly installed at the lower end of the double track frames. An inorganic curtain is movably installed inside the roller shutter door housing. A pin is fixedly installed at the lower end of the inorganic curtain. A humidifying spray pipe is fixedly installed between the upper ends of the double track frames. The two sides of the inorganic curtain are inserted into the track grooves of the double track frames.
[0007] Preferably, the card slot base plate includes a base plate body, a first sponge strip, a first rubber strip, a telescopic spring, and a dust-blocking strip.
[0008] Preferably, the base plate body is fixedly installed at the lower end of the double track frame, the inner side of the groove of the first sponge strip base plate body is located at the upper end, the first rubber strip is fixedly installed on the outer side of the first sponge strip, the telescopic spring is fixedly installed in the groove of the base plate body, and there are several telescopic springs installed. The telescopic springs are evenly distributed in the groove of the base plate body, and the dust-blocking strip is fixedly installed at the upper end of the telescopic spring.
[0009] Preferably, the pin strip includes a main body, a second sponge strip, and a second rubber strip.
[0010] Preferably, the main body of the slat is fixedly installed at the lower end of the inorganic curtain, the second sponge strip is fixedly installed at the lower end of the front and rear surfaces of the main body of the slat, and the second rubber strip is fixedly installed on the outside of the second sponge strip.
[0011] Preferably, the humidifying spray pipe includes a single-through long pipe, a nozzle, an L-shaped pipe head, and a water pump.
[0012] Preferably, the single-through pipe is fixedly installed in the through hole at the upper end of the double-track frame, the nozzle is embedded and fixedly installed on the outside of the single-through pipe, the L-shaped pipe head is rotatably installed at the front end of the single-through pipe, the water pump is fixedly installed at the lower end of the L-shaped pipe head, and there are several nozzles installed, which are evenly distributed on the outside of the single-through pipe.
[0013] This invention, through the design of a slotted bottom plate and a latch strip, ensures a more airtight and stronger seal when the inorganic double-track double-curtain fireproof roller shutter door is closed. This results in better fireproof barrier performance, preventing smoke from leaking out through the gap between the inorganic curtain and the ground.
[0014] The humidifying nozzles wet the inorganic curtain surface, cool it down, and increase the fire resistance time of the inorganic double-track double-curtain fireproof rolling shutter door, thus improving the time it can block fire. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of an inorganic double-track double-curtain fireproof roller shutter door according to this utility model;
[0016] Figure 2 This is a partial exploded view of the slot bottom plate and the latch strip of an inorganic double-track double-curtain fireproof roller shutter door of this utility model.
[0017] Figure 3 This is a partial exploded view of the humidification nozzle structure of an inorganic double-track double-curtain fireproof roller shutter door according to this utility model.
[0018] Figure 4 This utility model relates to an inorganic double-track double-curtain fireproof roller shutter door. Figure 1Enlarged diagram of part A in the middle;
[0019] Figure 5 This utility model relates to an inorganic double-track double-curtain fireproof roller shutter door. Figure 1 Enlarged diagram of section B;
[0020] Figure 6 This utility model relates to an inorganic double-track double-curtain fireproof roller shutter door. Figure 1 Enlarged diagram of section C;
[0021] Figure 7 This utility model relates to an inorganic double-track double-curtain fireproof roller shutter door. Figure 2 Enlarged diagram of section D in the middle;
[0022] Figure 8 This utility model relates to an inorganic double-track double-curtain fireproof roller shutter door. Figure 2 Enlarged schematic diagram of section E in the middle.
[0023] In the diagram: 1. Roller shutter door housing; 2. Double track frame; 3. Card slot base plate; 301. Base plate main body; 302. No. 1 sponge strip; 303. No. 1 rubber strip; 304. Telescopic spring; 305. Dust-blocking strip; 4. Inorganic curtain surface; 5. Pin strip; 501. Slat main body; 502. No. 2 sponge strip; 503. No. 2 rubber strip; 6. Humidifying spray pipe; 601. Single-pass long pipe; 602. Spray head; 603. L-shaped pipe head; 604. Water pump. Detailed Implementation
[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0025] like Figure 1-8 As shown, an inorganic double-track double-curtain fireproof roller shutter door includes a roller shutter door housing 1. Double-track frames 2 are fixedly installed at both ends of the lower surface of the roller shutter door housing 1. A slotted base plate 3 is fixedly installed at the lower end of the double-track frames 2. An inorganic curtain 4 is movably installed inside the roller shutter door housing 1. A pin strip 5 is fixedly installed at the lower end of the inorganic curtain 4. A humidifying spray pipe 6 is fixedly installed between the upper ends of the double-track frames 2. The two sides of the inorganic curtain 4 are inserted into the track grooves of the double-track frames 2. The pin strip 5, in conjunction with the slotted base plate 3, makes the inorganic double-track double-curtain fireproof roller shutter door more tightly closed, resulting in a stronger sealing effect and better fireproof barrier performance. This prevents smoke from leaking out from the gap between the inorganic curtain and the ground. The humidifying spray pipe 6 wets the inorganic curtain 4, cooling it and increasing the fire resistance time of the inorganic double-track double-curtain fireproof roller shutter door, thus improving the fire-blocking time.
[0026] In this embodiment, the card slot base plate 3 includes a base plate body 301, a first sponge strip 302, a first rubber strip 303, a telescopic spring 304, and a dust-blocking strip 305.
[0027] In this embodiment, the base plate body 301 is fixedly installed at the lower end of the double track frame 2. The first sponge strip 302 is located at the upper end of the groove inside the base plate body 301. The first rubber strip 303 is fixedly installed on the outer side of the first sponge strip 302. The telescopic spring 304 is fixedly installed in the groove of the base plate body 301. There are several telescopic springs 304 installed, and the telescopic springs 304 are evenly distributed in the groove of the base plate body 301. The dust-blocking strip 305 is fixedly installed at the upper end of the telescopic spring 304. The dust-blocking strip 305 prevents dust and debris from falling into the groove of the base plate body 301.
[0028] In this embodiment, the pin strip 5 includes a strip body 501, a second sponge strip 502, and a second rubber strip 503.
[0029] In this embodiment, the slat body 501 is fixedly installed at the lower end of the inorganic curtain 4, the second sponge strip 502 is fixedly installed at the lower end of the front and rear surfaces of the slat body 501, and the second rubber strip 503 is fixedly installed on the outside of the second sponge strip 502. When the inorganic curtain 4 is closed, the slat body 501 is inserted into the groove of the base plate body 301, the dust-blocking strip 305 is pressed to the bottom of the groove of the base plate body 301, the telescopic spring 304 is compressed, and the first sponge strip 302 causes... Rubber strip 303 is attached to the grooves on the front and back surfaces of the main body 501. Sponge strip 502 makes rubber strip 503 fit into the inner side of the groove of the main body 301. Rubber strip 303 and rubber strip 503 play a sealing role. The pin strip 5 and the slotted bottom plate 3 make the inorganic double-track double-curtain fireproof roller shutter door more tightly closed, with a stronger sealing effect, making the fireproof roller shutter door more effective in blocking smoke and preventing smoke from leaking out from the gap between the inorganic curtain and the ground.
[0030] In this embodiment, the humidifying nozzle 6 includes a single-through long pipe 601, a nozzle 602, an L-shaped nozzle 603, and a water pump 604.
[0031] In this embodiment, a single-through long pipe 601 is fixedly installed in the through hole at the upper end of the double-track frame 2. A nozzle 602 is embedded and fixedly installed on the outside of the single-through long pipe 601. An L-shaped pipe head 603 is rotatably installed at the front end of the single-through long pipe 601. A water pump 604 is fixedly installed at the lower end of the L-shaped pipe head 603. Several nozzles 602 are installed and evenly distributed on the outside of the single-through long pipe 601. In the event of a fire, the water inlet of the water pump 604 is connected to a water pipe, and the water pump 604 draws water through the L-shaped pipe head 603 into the interior of the single-through long pipe 601. The water is then sprayed onto the surface of the inorganic curtain 4 through the nozzles 602, wetting the inorganic curtain 4 from top to bottom, increasing the fire resistance time, and cooling the inorganic curtain 4. The humidifying spray pipe 6 wets the inorganic curtain 4, cools the inorganic curtain 4, increases the fire resistance time of the inorganic double-track double-curtain fireproof rolling shutter door, and improves the fire blocking time.
[0032] The scope of protection of this utility model is not limited to the above embodiments and their variations. Conventional modifications and substitutions made by those skilled in the art based on the content of these embodiments are all within the scope of protection of this utility model.
Claims
1. An inorganic double track double curtain fireproof rolling door, characterized in that: The utility model provides a double track frame curtain box, including the curtain box (1), the lower surface of curtain box (1) is fixedly installed with double track frame (2) in both ends position, the lower end of double track frame (2) is fixedly installed with the clamping groove bottom plate (3), the inside movable mounting of curtain box (1) has inorganic curtain surface (4), the lower end of inorganic curtain surface (4) is fixedly installed with the latch strip (5), the upper end of double track frame (2) is fixedly installed with humidification spray pipe (6), and the both sides of inorganic curtain surface (4) are inserted into double track frame (2) track groove.
2. The inorganic double-track double-curtain fireproof roller shutter door according to claim 1, characterized in that: The clamping groove bottom plate (3) includes a bottom plate body (301), a first sponge strip (302), a first rubber strip (303), a telescopic spring (304), and a dust blocking strip (305).
3. The inorganic double-track double-curtain fireproof roller shutter door according to claim 2, characterized in that: The bottom plate body (301) is fixedly installed at the lower end of the double track frame (2), the first sponge strip (302) is located at the upper end inside the groove of the bottom plate body (301), the first rubber strip (303) is fixedly installed outside the first sponge strip (302), the telescopic spring (304) is fixedly installed in the groove of the bottom plate body (301), the telescopic spring (304) is installed in a plurality of numbers, the telescopic springs (304) are evenly distributed in the groove of the bottom plate body (301), and the dust blocking strip (305) is fixedly installed at the upper end of the telescopic spring (304).
4. The inorganic double-track double-curtain fireproof roller shutter door according to claim 3, characterized in that: The latch strip (5) includes a board body (501), a second sponge strip (502), and a second rubber strip (503).
5. The inorganic double-track double-curtain fireproof roller shutter door according to claim 4, characterized in that: The board body (501) is fixedly installed at the lower end of the inorganic curtain surface (4), the second sponge strip (502) is fixedly installed at the lower end of the front and rear surfaces of the board body (501), and the second rubber strip (503) is fixedly installed outside the second sponge strip (502).
6. The inorganic double-track double-curtain fireproof roller shutter door according to claim 5, characterized in that: The humidification spray pipe (6) includes a single long pipe (601), a spray head (602), an L-shaped pipe head (603), and a water pump (604).
7. The inorganic double-track double-curtain fireproof roller shutter door according to claim 6, characterized in that: The single long pipe (601) is fixedly installed in the through hole at the upper end of the double track frame (2), the spray head (602) is embedded and fixedly installed outside the single long pipe (601), the L-shaped pipe head (603) is rotatably installed at the front end of the single long pipe (601), the water pump (604) is fixedly installed at the lower end of the L-shaped pipe head (603), the number of spray heads (602) is several, and the spray heads (602) are evenly distributed outside the single long pipe (601).