Steel fireproof single door structure

Abstract

The utility model discloses a steel fireproof single door structure which comprises a door frame and a door leaf rotationally connected to the door frame, the door leaf is made of steel plates, an inner cavity is formed in the door leaf, and fireproof materials are filled in the inner cavity. The door frame comprises an upper blocking frame, a lower blocking frame, a left blocking frame and a right blocking frame, the outward sides of the left blocking frame and the right blocking frame are open, the inward sides of the left blocking frame and the right blocking frame are bent to form blocking edges used for limiting the door leaf, fireproof leather strips are arranged between the blocking edges and the door leaf, and sleeve plates are arranged at the outward openings of the left blocking frame and the right blocking frame. The sleeve plates cover the openings of the corresponding blocking frames, the two sides of the sleeve plates extend to the front and rear sides of the blocking frames through bending, the two sides of the sleeve plates are connected to the outer walls of the front and rear sides of the blocking frames in an attached mode, and buckle plates are arranged in the openings of the left blocking frame and the right blocking frame. The strength of the door frame is guaranteed, and smoke can be prevented from flowing into the gap between the bottom of the door leaf and the lower blocking frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to fireproof door technical field, especially a steel fireproof single door structure. BACKGROUND

[0002] Fireproof door refers to the door that can satisfy the requirements of fire resistance stability, integrity and heat insulation within a certain time together with the frame. It is a movable fire separation facility with certain fire resistance, which is arranged between fireproof compartments, evacuation staircases, vertical shafts and the like.

[0003] At present, the fireproof door on the market usually fills fireproof material in the door leaf, and the fireproof material alone cannot meet the changing fire scene. For example, the door frame for fixing the door leaf is usually ignored. The strength of the door frame relates to the service life of the door leaf. Therefore, the strength of the door frame needs to be ensured to prevent the door frame from deforming and causing smoke to enter. In addition, the fireproof door is easy to deform with the passage of time, especially between the lower stop frame and the door leaf, so that smoke is very easy to enter, and the safety is greatly reduced. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the technical insufficiency of the above-mentioned and designs a steel fireproof single door structure.

[0005] The utility model designs a steel fireproof single door structure, which comprises a door frame and a door leaf rotatably connected to the door frame. The door leaf is made of steel plate and forms an inner cavity inside. The inner cavity is filled with fireproof material. The door frame comprises an upper stop frame, a lower stop frame, a left stop frame and a right stop frame. The four stop frames are formed by bending profile or plate structure. The outer side of the left stop frame and the right stop frame is open. The inner side of the left stop frame and the right stop frame is bent to form a stop edge for limiting the door leaf. A fireproof strip is arranged between the stop edge and the door leaf. A cover plate is arranged on the outer opening of the left stop frame and the right stop frame. The cover plate covers the opening of the corresponding stop frame and is extended to the front and rear sides of the stop frame by bending on both sides. Both sides of the cover plate are connected to the front and rear outer walls of the stop frame. A buckle plate is arranged in the opening of the left stop frame and the right stop frame. The buckle plate is connected to the inner walls of the frame body by bending on both sides towards the opening of the stop frame. A gap is left between the buckle plate and the opening of the stop frame to form a sunken space. The middle part of the cover plate is concave into the sunken space to form an avoidance groove. A fixing piece is arranged in the avoidance groove to connect the cover plate, the buckle plate and the corresponding stop frame.

[0006] Preferably, the cover plate and the surface of the stop frame are fixedly connected by welding.

[0007] Further optimization is that the two edges of the opening of the left stop frame and the right stop frame are bent relative to each other to form a reinforcing surface. When the cover plate is connected to the corresponding stop frame, the reinforcing surface is connected to the cover plate by welding.

[0008] Further optimization, the right blocking frame is hinged with the door leaf through a bright hinge, and the door leaf is provided with a pick-resistant nail extending to the right blocking frame.

[0009] As preferred, a gap is left between the upper surface of the lower blocking frame and the door leaf, the upper surface of the lower blocking frame is covered with a stainless steel plate, the stainless steel plate is arranged along the length direction of the lower blocking frame, and the two ends of the stainless steel plate are bent downward and fixed to the two ends of the lower blocking frame through fasteners respectively.

[0010] Further optimization, the door leaf is provided with a groove near the bottom, the groove extends along the width direction of the door leaf, the groove opening is located on the bottom surface of the door leaf, the inner surface of the door leaf is provided with a sliding groove communicating with the groove, a cover plate is slidably connected in the sliding groove, the cover plate extends into the groove and divides the groove into an upper cavity and a lower cavity, and blocky or granular activated carbon is arranged in the upper cavity.

[0011] Further optimization, a connecting belt is fixed in the groove, and the other end of the connecting belt is connected with a soft mesh bag, and the activated carbon is arranged in the soft mesh bag.

[0012] As preferred, the door frame adopts a cold-rolled plate structure.

[0013] As preferred, the fireproof material is fireproof rock wool.

[0014] The technical effect of the door frame comprises left and right blocking frames, the outer sides of the left and right blocking frames are open, and a cover plate and a buckle plate are arranged at the openings, so that the strength of the left and right blocking frames is increased; the door leaf is provided with a groove near the bottom, the door leaf is provided with a slidable cover plate, the cover plate extends into the groove and divides the groove into an upper cavity and a lower cavity, blocky or granular activated carbon is arranged in the upper cavity, when the cover plate is separated from the sliding groove, the activated carbon falls into the gap between the lower blocking frame and the door leaf through the upper cavity, the lower cavity and the groove opening, so as to fill the gap, the smoke between indoor and outdoor is purified by the activated carbon when passing through the gap, thereby reducing the inflow of smoke and ensuring the inflow of fresh air. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall structure of the utility model front view;

[0016] Figure 2 is the overall structure of the utility model top view;

[0017] Figure 3 is the top view of the left blocking frame;

[0018] Figure 4 is a top view of the right blocking frame;

[0019] Figure 5 is a side view of the overall structure of the utility model;

[0020] Figure 6 is Figure 5 is an enlarged view of A in the middle, that is, a state sectional view when the activated carbon does not fall;

[0021] Figure 7 is a state sectional view after the activated carbon falls in the utility model.

[0022] In the figure: 1, door leaf; 2, upper blocking frame; 3, lower blocking frame; 4, left blocking frame; 5, right blocking frame; 6, blocking edge; 7, fireproof leather strip; 8, cover plate; 9, buckle plate; 10, avoiding groove; 11, reinforcing surface; 12, exposed hinge; 13, anti-prying nail; 14, stainless steel plate; 15, recess; 16, sliding groove; 17, cover plate; 18, activated carbon; 19, connecting belt; 20, soft mesh bag. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art belong to the scope of protection of the utility model.

[0024] The utility model includes door frame and the door leaf 1 of rotation connection on the door frame, the door leaf 1 is made of steel plate material and forms inner chamber inside, and the inner chamber is filled with fireproof material, in the embodiment, the fireproof material adopts fireproof rock wool, so that the door leaf 1 forms fireproof characteristic;The door frame is formed by profile or plate structure bending, and the door frame includes upper blocking frame 2, lower blocking frame 3, left blocking frame 4 and right blocking frame 5, and the right side of the door leaf 1 is formed into hinged connection with the right blocking frame 5 of the door frame through exposed hinge 12.

[0025] The door frame adopts a cold-rolled plate structure, that is, the four blocking frames are all formed into square tubular frame bodies by bending the cold-rolled plate, the left blocking frame 4 and the right blocking frame 5 are formed with blocking edges 6 on the inward side for limiting the door leaf 1 by bending, the blocking edges 6 are provided with fireproof leather strips 7, so that the door leaf 1 is abutted against the fireproof leather strips 7 after being closed, the fireproof leather strips 7 can be used for sealing to prevent smoke or heat from the inside and outside from entering; the inward side of the left blocking frame 4 and the right blocking frame 5 is an inward side, the side facing the wall is an outward side, the outward side is provided with an opening, a cover plate 8 is arranged at the opening, the cover plate 8 extends along the length direction of the corresponding blocking frame, the cover plate 8 covers the opening of the corresponding blocking frame, the two sides of the cover plate 8 are bent to extend to the front and back sides of the corresponding blocking frame, the two sides of the cover plate 8 are connected to the front and back sides of the corresponding blocking frame, the cover plate 8 and the blocking frame are fixedly connected by welding, so that the cover plate 8 and the corresponding blocking frame form a closed square tubular frame body, the left blocking frame 4 and the right blocking frame 5 are similar to the splicing design, the strength of the left blocking frame 4 and the right blocking frame 5 is strengthened, and the left blocking frame 4 and the right blocking frame 5 are not easily deformed.

[0026] Further, the two edges of the opening of the left blocking frame 4 and the right blocking frame 5 are bent to form reinforcing surfaces 11, the reinforcing surfaces 11 are horizontal surfaces, the reinforcing surfaces 11 are connected to the cover plate 8 and fixedly connected by welding after the cover plate 8 is connected to the corresponding blocking frame, and the strength of the side of the left blocking frame 4 and the right blocking frame 5 facing the wall is further strengthened, so that the door leaf 1 is more stably installed.

[0027] Further, a buckling plate 9 is arranged in the opening of the left blocking frame 4 and the right blocking frame 5, the buckling plate 9 is located in the opening of the left blocking frame 4 and the right blocking frame 5, the two sides of the buckling plate 9 are bent to extend to the front and back inner walls of the corresponding blocking frame after being connected to the front and back inner walls of the corresponding blocking frame, and the buckling plate 9 and the inner walls of the blocking frame are fixedly connected by welding, so that a gap is left between the buckling plate 9 and the opening of the blocking frame to form a sunken space, the middle part of the cover plate 8 is recessed into the sunken space to form an avoiding groove 10, and a fixing member for connecting the cover plate 8, the buckling plate 9 and the corresponding blocking frame is arranged in the avoiding groove 10, the avoiding groove 10 is not only used for hiding the fixing member, but also makes the outward side of the blocking frame and the wall closely contact, so that the blocking frame and the wall are more closely connected, and the blocking frame is more stably fixed.

[0028] Further, the door leaf 1 is provided with pry nails 13 knocked into the door frame to prevent the door leaf 1 from being pried.

[0029] Further, a gap is left between the upper surface of the lower blocking frame 3 and the door leaf 1, that is, the door leaf 1 is connected to the door frame in a suspended manner, the upper surface of the lower blocking frame 3 is covered with a stainless steel plate 14, the stainless steel plate 14 extends along the length direction of the lower blocking frame 3, and the two ends of the stainless steel plate 14 are bent downward and fixedly connected to the two ends of the lower blocking frame 3 by fasteners, so as to increase the strength of the lower blocking frame 3 and prevent the lower blocking frame 3 from being stepped on and deformed, and the fasteners are removed, so as to facilitate the installation and replacement of the lower blocking frame 3.

[0030] Further, the door leaf 1 is internally provided with a groove 15 near the bottom, the groove 15 extends along the width direction of the door leaf 1, the opening of the groove 15 is located on the bottom surface of the door leaf 1, the groove 15 has a certain depth, and the inner surface of the door leaf 1 is provided with a sliding groove 16 communicating with the groove 15, that is, one end of the sliding groove 16 is open, the opening is arranged on the inner surface of the door leaf 1, and the other end communicates with the groove 15. A cover plate 17 is slidably connected in the sliding groove 16, the cover plate 17 is usually horizontally arranged, that is, the cover plate 17 is inserted into the sliding groove 16, one end of the cover plate 17 is located at the opening of the sliding groove 16, and the other end extends into the groove 15 and divides the groove 15 into an upper cavity and a lower cavity. A block or granular activated carbon 18 is arranged in the upper cavity. In the initial state, the cover plate 17 plays a supporting role, and the activated carbon 18 is located in the upper cavity and will not fall off. At this time, the opening of the sliding groove 16 is covered with a label and a warning sign. When a fire occurs, tear off the label, so that one end of the cover plate 17 is exposed, then manually pull the cover plate 17, so that the cover plate 17 is separated from the sliding groove 16, and the activated carbon 18 will fall into the gap between the lower blocking frame 3 and the door leaf 1 from the upper cavity, the lower cavity and the opening of the groove 15 in sequence, and fill the gap. At this time, the smoke passing through the gap will penetrate into the activated carbon 18 and be purified by the activated carbon 18, so as to prevent the smoke from entering the room. It should be noted that the fireproof strip 7 of the lower blocking frame 3 is the first line of defense, and the activated carbon 18 is the second line of defense. Due to the reason of stepping on, the fireproof strip 7 of the blocking frame will deform after a period of time, which will greatly reduce the sealing performance. Therefore, the activated carbon 18 as the second line of defense can block the smoke outside the room. It should be noted that the activated carbon 18 is usually stored in the upper cavity and is in an unused state. In this way, the effective time of the activated carbon 18 can be saved for a long time, and the effectiveness of the activated carbon 18 can be guaranteed when a fire occurs.

[0031] Further, the activated carbon 18 can be small particles or small blocks, which can block the indoor and outdoor when filled into the gap, prevent the formation of gaps between the blocky activated carbon 18, and be beneficial to purify the smoke.

[0032] Further, a connecting belt 19 is fixed in the groove 15, the other end of the connecting belt 19 is connected with a soft mesh bag 20, the activated carbon 18 is arranged in the soft mesh bag 20, and the activated carbon 18 will not leak out of the soft mesh bag 20. When the cover plate 17 is separated, the soft mesh bag 20 falls into the gap and fills the gap, which will not affect the filling of the activated carbon 18 into the gap. When the cover plate 17 is accidentally touched or the door leaf 1 is installed or removed, the soft mesh bag 20 only needs to be put into the groove 15 again, which can be repeatedly put in, so that the activated carbon 18 will not be scattered everywhere.

[0033] The utility model is not limited to the above best implementation, and any person can draw other various forms of products under the enlightenment of the utility model, but no matter any change in its shape or structure, all the technical schemes with same or similar to the application fall in the protection scope of the utility model.

Claims

1. A steel fire resistant single door construction, characterized in that The utility model provides a door frame and the door leaf (1) of rotation connection in door frame, the door leaf (1) is made of steel sheet material and forms the inner chamber inside, and the inner chamber is filled with fireproof material, the door frame includes upper blocking frame (2), lower blocking frame (3), left blocking frame (4) and right blocking frame (5), four blocking frames are all formed by profile or sheet structure bending forming, the opening side of left blocking frame (4) and right blocking frame (5) is towards outside, the inner side of left blocking frame (4) and right blocking frame (5) is formed by bending and forms the blocking edge (6) for limiting door leaf (1), the blocking edge (6) is equipped with fireproof leather strip (7) between door leaf (1), the opening of left blocking frame (4) and right blocking frame (5) is equipped with sleeve plate (8), the sleeve plate (8) covers to the opening of corresponding blocking frame and is extended to the front and rear sides of blocking frame by bending on both sides, the both sides of sleeve plate (8) are connected to the front and rear sides of blocking frame outer wall by sticking, the opening of left blocking frame (4) and right blocking frame (5) is equipped with buckle plate (9), the both sides of buckle plate (9) are connected to the front and rear sides of frame body inner wall by sticking after bending towards the opening direction of blocking frame, so that the opening between buckle plate (9) and blocking frame leaves the gap to form the subsidence space, the middle part of sleeve plate (8) is concave to the subsidence space to form the avoidance groove (10), the avoidance groove (10) is provided with the fixed part of connecting sleeve plate (8), buckle plate (9) and corresponding blocking frame.

2. The steel fire resistant single door construction of claim 1, wherein, The sleeve plate (8) and the surface of blocking frame are fixedly connected by welding.

3. The steel fire resistant single door construction of claim 2, wherein, The two edges of the opening of left blocking frame (4) and right blocking frame (5) are bent oppositely to form the reinforcing surface (11), when the sleeve plate (8) is connected with the corresponding blocking frame, the reinforcing surface (11) is stuck with the sleeve plate (8) and is fixedly connected by welding.

4. The steel fire resistant single door construction of claim 3, wherein, The right blocking frame (5) is hinged with the door leaf (1) through the hinge (12), and the door leaf (1) is provided with the anti-prying nail (13) extending to the right blocking frame (5).

5. The steel fire resistant single door assembly of claim 1, wherein, The upper surface of the lower blocking frame (3) leaves a gap with the door leaf (1), the upper surface of the lower blocking frame (3) is covered with a stainless steel plate (14), the stainless steel plate (14) is arranged along the length direction of the lower blocking frame (3), and the both ends of the stainless steel plate (14) are bent downward and fixedly connected to the both ends of the lower blocking frame (3) by fasteners respectively.

6. The steel fire resistant single door construction of claim 5, wherein, The door leaf (1) is provided with a groove (15) near the bottom inside, the groove (15) is arranged along the width direction of the door leaf (1), the opening of the groove (15) is located on the bottom surface of the door leaf (1), the inner surface of the door leaf (1) is provided with a sliding groove (16) communicating with the groove (15), a cover plate (17) is slidably connected in the sliding groove (16), the cover plate (17) extends into the groove (15) and divides the groove (15) into an upper cavity and a lower cavity, the upper cavity is provided with blocky or granular activated carbon (18), when the cover plate (17) is separated from the sliding groove (16), the activated carbon (18) falls into the gap between the lower blocking frame (3) and the door leaf (1) through the lower cavity and the opening of the groove (15) in sequence to fill the gap.

7. The steel fire resisting single door construction according to claim 6, characterized in that The recess (15) is fixed with a connecting belt (19), the other end of the connecting belt (19) is connected with a soft mesh bag (20), and the activated carbon (18) is arranged in the soft mesh bag (20).

8. The steel fire resistant single door assembly of claim 1, wherein, The door frame adopts a cold-rolled plate structure.

9. The steel fire resistant single door assembly of claim 1, wherein, The fireproof material is fireproof rock wool.

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