A sealing structure for fireproof door

Abstract

The utility model provides a sealing structure for a fireproof door, including a door frame, an elastic sealing mechanism is arranged inside the left side of the door frame, the elastic sealing mechanism includes an installation cavity arranged inside the left side of the door frame, a guide groove connected to the installation cavity is also arranged on the left side of the door frame, two springs connected to the door frame are arranged inside the installation cavity, the two springs are welded to the door frame, a sealing strip corresponding to the guide groove is arranged on the right side of the two springs, a through hole passing through the sealing strip is arranged in the middle of the front side of the door frame, and a clamping mechanism corresponding to the through hole is arranged on the front side of the door frame. The sealing structure for a fireproof door described in the utility model can not only seal the fireproof door and the door frame, but also automatically compensate the sealing strip, so that the sealing strip does not need to be replaced, thereby reducing the cost of application.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing equipment for fireproof doors, and particularly relates to a sealing structure for fireproof doors. Background Art

[0002] A fire door is a specially designed door that is mainly used to prevent the spread of fire and smoke. It has a high fire resistance limit in terms of building materials and structure, and can block flames and high temperatures for a certain period of time, buying precious time for personnel evacuation and fire rescue. According to different fire resistance performance, fire doors are usually divided into several grades, each grade corresponds to a different fire resistance time, such as 30 minutes, 60 minutes or longer.

[0003] During the use of the fire door, after the fire door is closed, a gap will exist between the fire door near the hinge mechanism and the door frame, and the gap will increase as the fire door is opened, and the gap between the door top and the door frame will also increase as the fire door is opened. In this way, when a fire hazard occurs, thick smoke will flow into the room through these gaps, causing harm to the occupants of the room. The sealing structure provided in the door frame of the existing fire door is usually a sealing strip. After a period of use, the sealing strip will wear out, resulting in a gap between the fire door and the door frame. Since the wear of the sealing strip cannot be automatically compensated, the sealing strip needs to be replaced more frequently, thereby increasing the application cost of the equipment. Therefore, a sealing structure for a fire door is proposed. Utility Model Content

[0004] In view of this, the utility model aims at the deficiencies of the prior art and provides a sealing structure for a fire door, which can not only seal the fire door and the door frame, but also automatically compensate for the sealing strip, thereby eliminating the need to replace the sealing strip and reducing the cost of application.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a sealing structure for a fireproof door, including a door frame, an elastic sealing mechanism is arranged inside the left side of the door frame, the elastic sealing mechanism includes an installation cavity arranged inside the left side of the door frame, and a guide groove connected to the installation cavity is also arranged on the left side of the door frame, two springs connected to the door frame are arranged inside the installation cavity, the two springs are welded to the door frame, a sealing strip corresponding to the guide groove is arranged on the right side of the two springs, a through hole passing through the sealing strip is arranged in the middle of the front side of the door frame, and a clamping mechanism corresponding to the through hole is arranged on the front side of the door frame.

[0006] As a further improvement of the utility model, the clamping mechanism includes a base plate arranged on the front side of the door frame corresponding to the through hole, a shell is arranged on the front side of the base plate, a guide rod corresponding to the through hole is arranged inside the shell, a baffle is arranged in the middle of the guide rod, a spring 2 is arranged on the front side of the baffle, a connecting plate is arranged at the front end of the guide rod, and an electric telescopic rod connected to the connecting plate is arranged at the front end of the door frame.

[0007] As a further improvement of the present invention, two hinged columns are provided at the front left end of the door frame, hinged tubes are respectively provided on the two hinged columns, a main door is commonly provided on the rear sides of the two hinged tubes, a handle is provided in the middle of the right side of the main door, and a telescopic sealing mechanism is provided on the top of the main door.

[0008] As a further improvement of the present invention, the telescopic sealing mechanism includes a fixed block arranged at the front end of the top of the main body door, a slide groove opening upward is arranged on the top of the fixed block, two sliders are arranged inside the slide groove, U-shaped plates are respectively arranged on the top of the two sliders, connecting rods are respectively hingedly arranged inside the two U-shaped plates, a U-shaped frame is hingedly arranged on the top of the two connecting rods, a bidirectional screw passing through the slider is arranged inside the slide groove, a rotating motor connected to the bidirectional screw is arranged at the right end of the fixed block, the rotating motor and the bidirectional screw are connected by a coupling, a pressure plate is arranged on the top of the U-shaped frame, and a sealing plate is arranged on the top of the pressure plate.

[0009] As a further improvement of the utility model, a switch is arranged on the left side of the front side of the main body door, and the switch is connected to the rotating motor through a coupling.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] First, when a fire occurs, the electric telescopic rod is extended, thereby driving the connecting plate to move forward, thereby driving the guide rod to move forward, thereby compressing the second spring, and further causing the guide rod to disengage from the through hole.

[0012] Secondly, the spring 1 is unlocked from the compressed state, so that the sealing strip extends out of the guide groove, thereby the door is supported, thereby achieving a sealing effect to prevent the entry of thick smoke.

[0013] Thirdly, start the rotating motor. The rotation of the rotating motor drives the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw drives the slider to slide inside the slide groove, so that the connecting rod arranged inside the U-shaped plate rotates, so that the U-shaped frame is lifted and lowered, thereby driving the pressure plate to move. When a fire occurs, the connecting rod moves downward, thereby driving the sealing plate to move downward, thereby sealing the gap between the main door and the top of the door frame under the action of fitting the door frame to prevent the entry of thick smoke.

[0014] Fourthly, the hinge column is connected to the hinge cylinder, thereby driving the main door to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 It is a partial enlarged structural schematic diagram of A of the utility model;

[0019] Figure 4 It is a schematic diagram of the partially enlarged structure of point B of the utility model.

[0020] In the figure: 101, door frame; 102, installation cavity; 103, guide groove; 104, sealing strip; 105, spring one; 106, through hole; 107, bottom plate; 108, shell; 109, guide rod; 110, baffle; 111, spring two; 112, connecting plate; 113, electric telescopic rod; 114, hinge column; 115, hinge cylinder; 116, main door; 117, handle; 118, fixing block; 119, slide groove; 120, slider; 201, U-shaped plate; 202, connecting rod; 203, U-shaped frame; 204, bidirectional screw; 205, rotating motor; 206, pressure plate; 207, sealing plate; 208, switch. DETAILED DESCRIPTION

[0021] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0022] like Figure 1 , 2As shown in Figure 3, a sealing structure for a fire door includes a door frame 101, and an elastic sealing mechanism is arranged inside the left side of the door frame 101. The elastic sealing mechanism includes an installation cavity 102 arranged inside the left side of the door frame 101, and a guide groove 103 connected to the installation cavity 102 is also arranged on the left side of the door frame 101. Two springs 105 connected to the door frame 101 are arranged inside the installation cavity 102, and the two springs 105 are welded to the door frame 101. A sealing strip 104 corresponding to the guide groove 103 is arranged on the right side of the two springs 105, a through hole 106 passing through the sealing strip 104 is arranged in the middle of the front side of the door frame 101, and a clamping mechanism corresponding to the through hole 106 is arranged on the front side of the door frame 101.

[0023] like Figure 1 , 3 As shown, the clamping mechanism includes a bottom plate 107 arranged on the front side of the door frame 101 corresponding to the through hole 106, a shell 108 is arranged on the front side of the bottom plate 107, a guide rod 109 corresponding to the through hole 106 is arranged inside the shell 108, a baffle 110 is arranged in the middle of the guide rod 109, a spring 111 is arranged on the front side of the baffle 110, a connecting plate 112 is arranged at the front end of the guide rod 109, and an electric telescopic rod 113 connected to the connecting plate 112 is arranged at the front end of the door frame 101.

[0024] like Figure 1 , 2 As shown, two hinge columns 114 are provided at the front left end of the door frame 101, and hinge tubes 115 are respectively provided on the two hinge columns 114. A main body door 116 is commonly provided on the rear side of the two hinge tubes 115. A handle 117 is provided in the middle of the right side of the main body door 116, and a telescopic sealing mechanism is provided on the top of the main body door 116.

[0025] like Figure 1 , 2 As shown in , 4, the telescopic sealing mechanism includes a fixed block 118 arranged at the front end of the top of the main body door 116, the top of the fixed block 118 is provided with a slide groove 119 with an upward opening, the interior of the slide groove 119 is provided with two sliders 120, the tops of the two sliders 120 are respectively provided with U-shaped plates 201, the interiors of the two U-shaped plates 201 are respectively hinged with connecting rods 202, the tops of the two connecting rods 202 are jointly hinged with a U-shaped frame 203, the interior of the slide groove 119 is provided with a bidirectional lead screw 204 passing through the slider 120, the right end of the fixed block 118 is provided with a rotating motor 205 connected to the bidirectional lead screw 204, the rotating motor 205 and the bidirectional lead screw 204 are connected by a coupling, the top of the U-shaped frame 203 is provided with a pressing plate 206, and the top of the pressing plate 206 is provided with a sealing plate 207.

[0026] like Figure 1As shown, a switch 208 is provided on the left side of the front side of the main body door 116, and the switch 208 is connected to the rotating motor 205 via a coupling.

[0027] When a fire occurs, the electric telescopic rod 113 extends, thereby driving the connecting rod 202 to move forward, thereby driving the guide rod 109 to move forward, thereby compressing the spring 2 111, and then the guide rod 109 is disengaged from the through hole 106, so that the spring 105 is unlocked from the compressed state, so that the sealing strip 104 extends out of the guide groove 103, thereby pushing the door up, thereby sealing it and preventing the entry of thick smoke.

[0028] Start the rotating motor 205. The rotation of the rotating motor 205 drives the bidirectional screw 204 to rotate. The rotation of the bidirectional screw 204 drives the slider 120 to slide inside the slide groove 119, so that the connecting rod 202 set inside the U-shaped plate 201 rotates, so that the U-shaped frame 203 is lifted and lowered, thereby driving the pressure plate 206 to move. When a fire occurs, the connecting rod 202 moves downward, thereby driving the sealing plate 207 to move downward, so that the gap between the main door 116 and the top of the door frame 101 is sealed under the action of fitting the door frame 101 to prevent the entry of thick smoke, and the hinge column 114 is connected to the hinge tube 115, thereby driving the main door 116 to rotate.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A sealing structure for a fire door, comprising a door frame (101), characterized in that: An elastic sealing mechanism is arranged inside the left side of the door frame (101), and the elastic sealing mechanism comprises an installation cavity (102) arranged inside the left side of the door frame (101); a guide groove (103) connected to the installation cavity (102) is also arranged on the left side of the door frame (101); two springs (105) connected to the door frame (101) are arranged inside the installation cavity (102); a sealing strip (104) corresponding to the guide groove (103) is arranged on the right side of the two springs (105); a through hole (106) passing through the sealing strip (104) is arranged in the middle of the front side of the door frame (101); and a clamping mechanism corresponding to the through hole (106) is arranged on the front side of the door frame (101).

2. A sealing structure for a fire door according to claim 1, characterized in that: The clamping mechanism comprises a bottom plate (107) arranged on the front side of the door frame (101) and corresponding to the through hole (106); a shell (108) is arranged on the front side of the bottom plate (107); a guide rod (109) corresponding to the through hole (106) is arranged inside the shell (108); a baffle (110) is arranged in the middle of the guide rod (109); a spring (111) is arranged on the front side of the baffle (110); a connecting plate (112) is arranged at the front end of the guide rod (109); and an electric telescopic rod (113) connected to the connecting plate (112) is arranged at the front end of the door frame (101).

3. A sealing structure for a fire door according to claim 2, characterized in that: Two hinged columns (114) are arranged at the front left end of the door frame (101), and hinged cylinders (115) are respectively arranged on the two hinged columns (114).

4. A sealing structure for a fire door as claimed in claim 3, characterized in that: A main body door (116) is commonly provided at the rear sides of the two hinged cylinders (115), a handle (117) is provided at the middle of the right side of the main body door (116), and a telescopic sealing mechanism is provided at the top of the main body door (116).

5. A sealing structure for a fire door as claimed in claim 4, characterized in that: The telescopic sealing mechanism comprises a fixed block (118) arranged at the front end of the top of the main body door (116); a sliding groove (119) with an upward opening is arranged at the top of the fixed block (118); two sliding blocks (120) are arranged inside the sliding groove (119); the tops of the two sliding blocks (120) are respectively provided with U-shaped plates (201); the insides of the two U-shaped plates (201) are respectively hinged with connecting rods (202); the tops of the two connecting rods (202) are jointly hinged with a U-shaped frame (203); a bidirectional lead screw (204) passing through the sliding block (120) is arranged inside the sliding groove (119); a rotating motor (205) connected to the bidirectional lead screw (204) is arranged at the right end of the fixed block (118); a pressing plate (206) is arranged at the top of the U-shaped frame (203); and a sealing plate (207) is arranged at the top of the pressing plate (206).

6. A sealing structure for a fire door as claimed in claim 5, characterized in that: A switch (208) is provided on the left side of the front side of the main body door (116).

7. A sealing structure for a fire door according to claim 6, characterized in that: The two springs 1 (105) are connected to the door frame (101) by welding.

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