CN220815450U - Barrier-free evacuation opening device based on positive pressure air supply of fireproof door - Google Patents

Abstract

The utility model provides a barrier-free evacuation opening device based on positive pressure air supply of a fireproof door, which comprises a pressure relief opening arranged at the bottom end of the fireproof door, a sealing mechanism of the pressure relief opening is arranged in an inner cavity or an outer side surface of the fireproof door, a steel sleeve of the sealing mechanism is fixed above the pressure relief opening, a sealing plate is inserted into the steel sleeve, the lower end of the sealing plate is sealed with the pressure relief opening, the lower end of a pull rope is connected with the sealing plate, and the upper end of the pull rope is wound on a rotating shaft of a handle. The device seals the lower end of the fireproof door by a sealing mechanism in daily life through arranging the pressure relief opening at the lower end of the fireproof door, so that the integrity of the fireproof door is maintained; the sealing mechanism is moved while the handle is opened, the pressure relief opening is opened, evacuation behaviors do not need to be changed or increased when escape is performed, and the handle is opened only by conventional operation, so that the daily behavior habits of people are met; the device only needs to slightly change the structure of the door lock or the handle, is easy to realize, can directly reform the existing fireproof door, and has low cost; the sealing mechanism adopts foam glass, so that the fire resistance limit of the second-class fireproof door is not damaged, and the fire-fighting requirement is met.

Description

Barrier-free evacuation opening device based on positive pressure air supply of fireproof door

Technical Field

The utility model belongs to the technical field of building design, and particularly relates to a barrier-free evacuation opening device based on positive pressure air supply of a fireproof door.

Background

The existing safe evacuation stairway of the building is required to be provided with a fireproof door and a door closer, in order to prevent smoke from entering, some evacuation stairway adopts positive pressure air supply to pressurize the stairway and a front chamber, so that the place forms positive pressure of 25-50 megapascals, the positive pressure acts on evacuation door leaves, the center of the door is subjected to pressure of 55-110N by taking a single door width of 1m to 2.2m, the pushing force of 30-60 newtons is required to be applied to the handle for pushing the door leaves to form balance with the positive pressure by taking a door shaft as a fulcrum, the door closer which is arranged for automatically closing the fireproof door in order to ensure that the smoke can be in the fire is generally 20-30N in tension, the door closer is overlapped on the door, and the force required to be applied to the door handle for opening the door leaves in evacuation is about 50-90N.

The 3 rd clause of general Specification No. 2.5.4 of building and municipal engineering GB 55019-2021 specifies that except for fireproof doors, the door meeting the accessible traffic is not more than 25N in the required force for opening the door leaf. For the reasons stated above, the tension of the fire door is not limited, but is far greater than 25N, and the fire door is difficult to be opened by a user with inconvenient actions. With the trend of serious aging of the population in China, the adults in the ordinary residence work outdoors in the daytime, most of the old people and children with weak behavior in the home, once a fire disaster occurs, the door used as evacuation is difficult to open, and certain fire disaster potential safety hazards exist.

Disclosure of utility model

The utility model provides a barrier-free evacuation opening device based on positive pressure air supply of a fireproof door, which can effectively solve the problems.

The utility model is realized in the following way:

The utility model provides a barrier-free evacuation opening device based on prevent fire door malleation air supply, includes prevents fire door, prevent fire door bottom and be equipped with the pressure release mouth, the pressure release mouth is equipped with sealing mechanism, sealing mechanism locates at least one side of preventing fire door inner chamber or lateral surface, sealing mechanism is equipped with steel bushing, closing plate and stay cord, the steel bushing is fixed in on preventing fire door of pressure release mouth top, the closing plate inserts in the steel bushing, and the lower extreme is sealed with the pressure release mouth, the stay cord lower extreme is connected with the closing plate, upper end clockwise winding is in preventing fire door handle's pivot.

As a further improvement, one end of the sealing plate is provided with a rotating rod and a fireproof door rotating rod which are fixedly connected, and the other end of the sealing plate is connected with the rotating shaft through a pull rope.

As a further improvement, the sealing plate rope pulling end is provided with a limiting hole taking the rotating rod as the center of a circle, and the fireproof door is provided with a limiting rod in a penetrating manner corresponding to the limiting hole.

As a further improvement, the section of the steel sleeve is in an inverted trapezoid shape, and the corresponding sealing plate is also in an inverted trapezoid shape.

As a further improvement, an elastic piece is fixedly arranged above the sealing plate, and the other end of the elastic piece is abutted with the upper edge of the sealing plate.

As a further improvement, the pressure relief opening is of a square or triangular structure.

As a further improvement, the sealing plate is a foam glass plate.

As a further improvement, the rotating shaft is provided with a rotating disc, and the pull rope is wound on the rotating disc.

As a further improvement, at least one side of the steel sleeve is provided with a limiter, and threads of the limiter penetrate through the steel sleeve.

As a further improvement, an upper cover is arranged at the upper end of the steel sleeve.

The beneficial effects of the utility model are as follows: the device seals the lower end of the fireproof door by a sealing mechanism in daily life through arranging the pressure relief opening at the lower end of the fireproof door, so that the integrity of the fireproof door is maintained; the sealing mechanism is moved while the handle is opened, and the pressure relief opening is opened, namely, when a fire condition occurs, the fireproof door is closed, the evacuation behavior is not changed or increased when the escape is performed, the handle is opened only by conventional operation, the daily behavior habit of people is met, the pressure relief opening can be opened, and the pressure relief treatment is performed on the positive air pressure, so that the fireproof door is conveniently opened; the device only needs to slightly change the structure of the door lock or the handle, is easy to realize, can directly reform the existing fireproof door, and has low reforming cost; the sealing mechanism adopts foam glass, so that the fire resistance limit of the second-class fireproof door is not damaged, the sealing mechanism is suitable for the arrangement of the fireproof door between the corridor which is easy to generate positive wind pressure, and the escape probability is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a barrier-free evacuation opening device based on positive pressure air supply of a fireproof door;

Fig. 2 is a schematic cross-sectional view of a pressure release state of a barrier-free evacuation opening device based on positive pressure air supply of a fireproof door according to the present utility model;

FIG. 3 is a schematic diagram showing a closed state of a barrier-free evacuation opening device based on positive pressure air supply of a fireproof door;

Fig. 4 is a schematic diagram of a decompression state of a barrier-free evacuation opening device based on positive pressure air supply of a fireproof door;

Fig. 5 is a schematic view of another embodiment of a barrier-free evacuation opening device based on positive pressure air supply of a fire door according to the present utility model;

Fig. 6 is a schematic view of a barrier-free evacuation opening device based on positive pressure air supply of a fireproof door according to another embodiment of the present utility model.

Reference numerals:

A fire door 1; a pressure relief port 2; a sealing mechanism 3; a steel sleeve 31; a sealing plate 32; a pull cord 33; a rotating lever 34; a limiting hole 35; a stop lever 36; a stopper 37; a handle 4; a turntable 41; and an elastic member 5.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

In the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, the terms "upper," "middle," "side," "upper," "end," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Referring to fig. 1-6, a barrier-free evacuation opening device based on positive pressure air supply of a fireproof door comprises a fireproof door 1, a pressure relief opening 2 is arranged at the bottom end of the fireproof door 1, a sealing mechanism 3 is arranged at the pressure relief opening 2, the sealing mechanism 3 is arranged on at least one side of an inner cavity or an outer side surface of the fireproof door 1, the sealing mechanism 3 is provided with a steel sleeve 31, a sealing plate 32 and a pull rope 33, the steel sleeve 31 is fixed on the fireproof door 1 above the pressure relief opening 2, the sealing plate 32 is inserted into the steel sleeve 31, the lower end of the sealing plate 32 is sealed with the pressure relief opening 2, the lower end of the pull rope 33 is connected with the sealing plate 32, and the upper end of the pull rope is clockwise wound on a rotating shaft of a handle 4 of the fireproof door 1.

Because some evacuation stairways are pressurized to the stairway and the front room by adopting positive pressure air supply in order to prevent smoke from entering during a fire disaster, so that the place forms positive pressure of 25-50 megapascals, and the positive pressure acts on the evacuation door leaves, the pressure relief opening 2 is arranged on the fireproof door 1, and is preferably arranged at the bottom end of the fireproof door 1, so that the improvement on the fireproof door 1 is small, and the integral integrity and the fireproof strength of the fireproof door 1 can be maintained; the other three sides are provided with sealing edges, and the door frame has certain acting force, so that the structure of the pressure relief opening 2 is not easy to reform. The arrangement at other positions without taking the above factors into consideration does not exceed the scope of the structure of the application, but only the positions of the sealing mechanism 3 and the pressure relief port 2 are adjusted, and the arrangement still falls within the scope of the protection structure of the application.

The sealing plate 32 slides in the steel sleeve 31 to realize the opening of the sealing box of the pressure relief opening 2, the sliding of the sealing plate 32 is controlled by the pull rope 33, the pull rope 33 is connected with the rotating shaft of the handle 4, the pull rope 33 is wound while the handle 4 is rotated, and the sealing plate 32 is pulled to open the pressure relief opening 2, so that the pressure relief action is completed; the pull cord 33 positions the seal plate 32 up and down, i.e., positions at which the pull cord 33 starts and stops. After releasing the handle 4, the sealing plate 32 is reset under the action of gravity.

The draw cord 33 is a steel cord or other fire resistant cord. The stay cord 33 twines in the pivot of preventing fire door 1 outside or inside, twines in inside pivot, and then stay cord 33 sets up in preventing fire door 1 inside, wears out the door plant of preventing fire door 1 when reaching closing plate 32 top and being close to the link and is connected with closing plate 32.

The sealing mechanism 3 is preferably arranged inside the fire door 1 in case the internal structure of the fire door 1 has sufficient space and does not affect the fire resistance limit. The sealing mechanism 3 is provided on the outer side from the viewpoint of easy installation and small modification of the fire door 1. Furthermore, the sealing mechanism 3 can be arranged on both indoor and outdoor sides of the fireproof door 1, and the inner door handle 4 and the outer door handle 4 are linked, so that the inner and outer sealing mechanisms 3 can be simultaneously opened; in order to save the cost, the sealing mechanism 3 may be only disposed on the positive wind pressure side of the fireproof door 1, so that the sealing plate 32 and the fireproof door 1 have better fitting degree under the wind pressure effect in the closed state of the fireproof door 1.

The pressure relief opening 2 is arranged in the middle of the fireproof door and near the lower position of the handle 4, and the two sides of the door are combined with the door frame, so that the sealing plate 32 is not beneficial to arrangement.

Further, a rotating rod 34 is arranged at one end of the sealing plate 32 and fixedly connected with the fireproof door 1, and the other end of the sealing plate is connected with the rotating shaft through a pull rope 33.

One end of the sealing plate 32 is fixed by a rotating rod 34, so that the rotating stability and the resetting accuracy can be ensured, and the sealing plate 32 is prevented from being deviated.

Further, a limiting hole 35 with the rotating rod 34 as a center is formed at the end of the pull rope 33 of the sealing plate 32, and a limiting rod 36 is arranged in the fireproof door 1 corresponding to the limiting hole 35 in a penetrating manner.

By arranging the limiting rod 36, the moving position of the sealing plate 32 is limited in a certain range, so that the sealing plate 32 is prevented from being separated from the steel sleeve 31 under the condition of other acting forces, and normal use is prevented from being influenced.

Further, the section of the steel sleeve 31 is in an inverted trapezoid shape, and the corresponding sealing plate 32 is also in an inverted trapezoid shape.

The inverted trapezoid structure can realize the limit function on the sealing plate 32, and is simple in structure.

Further, an elastic member 5 is fixedly arranged above the sealing plate 32, and the other end of the elastic member 5 is abutted against the upper edge of the sealing plate 32.

The setting of elastic component 5 can improve the degree of accuracy and the speed that closing plate 32 reset downwards, and the quick reset of closing plate 32 is realized through the compaction of elastic component 5 downwards, pushes down the laminating degree that also can guarantee closing plate 32 and steel bushing 31 to guarantee its laminating degree with pressure release mouth 2.

Further, the pressure relief opening 2 has a square or triangular structure.

Because the sealing plate 32 is pulled to be separated from the pressure relief opening 2 at the end of the handle 4 through the pull rope 33, a triangular opening is formed, and the opening is arranged into a triangle shape in order to reduce the size of the opening as much as possible and match with the opening of the sealing plate 32, so that the overall strength and the fireproof performance of the fireproof door 1 can be ensured.

Further, the sealing plate 32 is a foam glass plate.

Can ensure the fireproof effect, and the thickness of the foam glass plate can be selected to be 50mm.

Further, a turntable 41 is arranged on the rotating shaft, and the pull rope 33 is wound on the turntable 41.

The rotation angle of the handle 4 is limited, so that the sealing plate 32 can be ensured to open the pressure relief opening 2 in order to ensure the pulling distance of the pull rope 33, and the pull rope 33 is wound by arranging a turntable 41 with the corresponding size. The rotation ratio of the handle 4 to the turntable 41 may be set to 1:100.

Further, at least one side of the steel sleeve 31 is provided with a limiter 37, and the limiter 37 is arranged in a threaded manner through the steel sleeve 31.

The stopper 37 is used for limiting and adjusting the descending height of the sealing plate 32; because fire door 1 or seal structure exist certain error in the installation, in order to ensure sealing degree of closing plate 32 and pressure release mouth 2, avoid appearing closing plate 32 and leave the too big and play the fire prevention dustproof effect in ground clearance, perhaps the clearance is too little and ground takes place to scratch and be unfavorable for opening or damage the problem of device.

Further, an upper cover is arranged at the upper end of the steel sleeve 31.

Foreign matter is placed into the steel sleeve 31, and the sliding track of the sealing plate 32 is blocked.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a barrier-free evacuation opening device based on prevent fire door malleation air supply, a serial communication port, including preventing fire door, prevent fire door bottom and be equipped with the pressure release mouth, the pressure release mouth is equipped with sealing mechanism, sealing mechanism locates at least one side of preventing fire door inner chamber or lateral surface, sealing mechanism is equipped with steel bushing, closing plate and stay cord, the steel bushing is fixed in on preventing fire door of pressure release mouth top, the closing plate inserts in the steel bushing, and the lower extreme is sealed with the pressure release mouth, the stay cord lower extreme is connected with the closing plate, upper end clockwise winding is in preventing fire door handle's pivot.

2. The barrier-free evacuation opening device based on positive pressure air supply of the fireproof door according to claim 1, wherein one end of the sealing plate is provided with a rotating rod fixedly connected with the rotating rod of the fireproof door, and the other end of the sealing plate is connected with the rotating shaft through a pull rope.

3. The barrier-free evacuation opening device based on positive pressure air supply of the fireproof door as claimed in claim 2, wherein the sealing plate pull rope end is provided with a limiting hole taking the rotating rod as a circle center, and the fireproof door is provided with a limiting rod in a penetrating manner corresponding to the limiting hole.

4. The barrier-free evacuation opening device based on positive pressure air supply of a fireproof door according to claim 1, wherein the section of the steel sleeve is inverted trapezoid, and the corresponding sealing plate is also inverted trapezoid.

5. The barrier-free evacuation opening device based on positive pressure air supply of a fireproof door according to claim 1, 3 or 4, wherein an elastic piece is fixedly arranged above the sealing plate, and the other end of the elastic piece is abutted against the upper edge of the sealing plate.

6. The barrier-free evacuation opening device based on positive pressure air supply of a fireproof door as claimed in claim 1, wherein the pressure relief opening is of a square or triangular structure.

7. The barrier-free evacuation opening device based on positive pressure air supply of a fireproof door according to claim 1, wherein the sealing plate is a foam glass plate.

8. The barrier-free evacuation opening device based on positive pressure air supply of the fireproof door as claimed in claim 1, wherein a rotary disc is arranged on the rotary shaft, and the pull rope is wound on the rotary disc.

9. The barrier-free evacuation opening device based on positive pressure air supply of a fireproof door according to claim 1, wherein at least one side of the steel sleeve is provided with a limiter, and threads of the limiter penetrate through the steel sleeve.

10. The barrier-free evacuation opening device based on positive pressure air supply of the fireproof door as claimed in claim 1, wherein an upper cover is arranged at the upper end of the steel sleeve.