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CN-224214063-U - Heat-insulating airtight fire door

CN224214063UCN 224214063 UCN224214063 UCN 224214063UCN-224214063-U

Abstract

The application discloses a heat-insulating airtight fire door which comprises a door plate main body, wherein a limiting strip is arranged on the outer side of the door plate main body, the door plate main body comprises a door shell, a filling cavity is arranged on the inner side of the door shell, air is filled in the filling cavity and expands when the fire occurs, a plurality of filling air pipes penetrate through the outer side of the door shell, an expansion sealing mechanism is arranged on the inner side of the limiting strip in a clamping mode and has expansion performance, and the expansion sealing mechanism is communicated with the filling cavity through the filling air pipes. The fire door has the advantages that by arranging the air filling cavity and the expansion sealing mechanism and utilizing the thermal expansion principle, the expansion air is automatically led into the sealing mechanism to be tightly attached to the door frame in case of fire, so that gaps are effectively compensated, harmful gas leakage is prevented, external power is not needed, the air expansion and the action of the sealing mechanism are triggered only through temperature change, quick response is realized, and the automation level and reliability of the fire door are improved.

Inventors

  • PAN JIANHUA

Assignees

  • 四川城丰达科技有限公司

Dates

Publication Date
20260508
Application Date
20250515

Claims (7)

  1. 1. A heat-insulating airtight fire door, comprising: The door comprises a door plate main body (1), wherein a limiting strip (2) is arranged on the outer side of the door plate main body (1), the door plate main body (1) comprises a door shell (101), a filling cavity (105) is arranged on the inner side of the door shell (101), air is filled in the filling cavity (105), the air expands when the air is heated, and a plurality of filling air pipes (4) are arranged on the outer side of the door shell (101) in a penetrating mode; An expansion sealing mechanism (3) is arranged on the inner side of the limit strip (2) in a clamping mode, the expansion sealing mechanism has expansion performance, and the expansion sealing mechanism (3) is communicated with the air filling cavity (105) through the air filling pipe (4).
  2. 2. The heat-insulating airtight fire door according to claim 1, wherein the expansion sealing mechanism (3) comprises an expansion ring (301), a cavity is formed in the inner side of the expansion ring (301), a limiting ring (302) is mounted on the outer side of the expansion ring (301), and a communication hole (303) is formed in the inner side of the limiting ring (302).
  3. 3. The heat-insulating and airtight fire door according to claim 2, wherein one end of the filling air pipe (4) is engaged with the communication hole (303).
  4. 4. A heat-insulating and airtight fire door as claimed in claim 2, characterized in that the outer side of the expansion ring (301) is further provided with a number of compensation rings (304).
  5. 5. A heat-insulating and airtight fire door according to claim 1, characterized in that the inside of the door housing (101) is also fitted with a reinforcing plate (102).
  6. 6. The heat-insulating and airtight fire door according to claim 5, wherein the inside of the reinforcing plate (102) is provided with a heat-insulating plate (103).
  7. 7. The heat-insulating and airtight fire door according to claim 6, wherein the inside of the heat-insulating plate (103) is further provided with a vacuum chamber (104).

Description

Heat-insulating airtight fire door Technical Field The application relates to the technical field of fire-fighting equipment, in particular to a heat-insulating airtight fire door. Background Fire doors are an important component of building fire separation, and their performance is directly related to the safe evacuation of personnel and the control of fire during fire. Although the traditional fire door has certain fireproof and heat-insulating functions, under the high-temperature environment, gaps between the door body and the door frame are easily enlarged due to thermal deformation, so that harmful smoke and high-temperature gas leak, and the fireproof effect is affected. In addition, the insulating layer of current fire door is mostly fixed structure, can't be according to temperature variation dynamic adjustment sealing performance, is difficult to the complex environment when effectively handling the conflagration. Accordingly, there is a need for a fire door that dynamically responds to temperature changes, automatically compensates for gaps, and improves insulation performance to address the deficiencies of the prior art. Disclosure of utility model Therefore, the application provides a heat-insulating airtight fire door to solve the problems existing in the prior art. In order to achieve the above object, the present application provides the following technical solutions: A thermally insulated, closed fire door comprising: The door comprises a door body, wherein a limiting strip is arranged on the outer side of the door body, the door body comprises a door shell, a filling cavity is arranged on the inner side of the door shell, air is filled in the filling cavity, the door body expands when heated, and a plurality of filling air pipes penetrate through the outer side of the door shell; The inner side of the limit strip is clamped and provided with an expansion sealing mechanism which has expansion performance, and the expansion sealing mechanism is communicated with the filling cavity through a filling air pipe. Optionally, the expansion sealing mechanism comprises an expansion ring, a cavity is formed in the inner side of the expansion ring, a limiting ring is installed on the outer side of the expansion ring, and a communication hole is formed in the inner side of the limiting ring. Optionally, one end of the filling air pipe is engaged with the communication hole. Optionally, a plurality of compensating rings are further arranged on the outer side of the expansion ring. Optionally, a reinforcing plate is further mounted on the inner side of the door housing. Optionally, a heat insulating plate is mounted on the inner side of the reinforcing plate. Optionally, a vacuum cavity is further arranged on the inner side of the heat insulation plate. Compared with the prior art, the application has at least the following beneficial effects: 1. By arranging the air filling cavity and the expansion sealing mechanism, the expansion air is automatically led into the sealing mechanism by utilizing the thermal expansion principle when a fire disaster occurs, so that the sealing mechanism is tightly attached to a door frame, gaps are effectively compensated, and leakage of harmful gas is prevented. 2. The fire door is free from external power, and the air expansion and sealing mechanism action is triggered only through temperature change, so that quick response is realized, and the automation level and reliability of the fire door are improved. Drawings In order to more intuitively illustrate the prior art and the application, exemplary drawings are presented below. It should be understood that the specific shapes and configurations shown in the drawings are not generally considered to be limiting conditions in implementing the present application, and that, for example, those skilled in the art will be able to make conventional adjustments or further optimization of the addition/subtraction/attribution division, specific shapes, positional relationships, connection manners, dimensional proportion relationships, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application. FIG. 1 is a schematic diagram of the overall structure of a heat-insulating airtight fire door provided by the application; FIG. 2 is a schematic diagram of the overall structure of the connection between the expansion sealing mechanism and the filling air pipe of the heat-insulating airtight fire door; Fig. 3 is a schematic cross-sectional view of a heat-insulating airtight fire door according to the present application. Reference numerals illustrate: 1. The door comprises a door plate main body, 101, a door shell, 102, a reinforcing plate, 103, a heat insulation plate, 104, a vacuum cavity, 105, a filling cavity, 2, a limiting strip, 3, an expansion sealing mechanism, 301, an expansion ring, 302, a limiting ring, 303, a communication hole, 304, a compensation ring and 4, a