阅读说明：本技术 一种建筑防火阀 (Building fire prevention valve ) 是由 童立军 于 2020-07-05 设计创作，主要内容包括：本发明公开了一种建筑防火阀,包括管体,所述管体的上端固定连接有连接板,所述连接板下端设有方形槽,所述方形槽内设有用于上下滑动的滑板,所述滑板内设有横腔,所述横腔中设有磁极转换机构,管体的内顶部通过开口与方形槽连通,所述开口内设有热触发机构,所述管体的内底部设有底槽,所述底槽内设有用于封闭的重力封闭机构。该防火阀设有密闭结构,使得防火阀在启动过后的防火效果较好,且通过柱形磁性块与磁板的配合,减小了滑板对熔断材料的压力,保证熔断材料一直处于可以正常使用的状态。(The invention discloses a building fire damper, which comprises a pipe body, wherein the upper end of the pipe body is fixedly connected with a connecting plate, the lower end of the connecting plate is provided with a square groove, a sliding plate used for sliding up and down is arranged in the square groove, a transverse cavity is arranged in the sliding plate, a magnetic pole switching mechanism is arranged in the transverse cavity, the inner top of the pipe body is communicated with the square groove through an opening, a thermal trigger mechanism is arranged in the opening, the inner bottom of the pipe body is provided with a bottom groove, and a gravity sealing mechanism used for sealing is arranged in the bottom groove. This fire prevention valve is equipped with airtight structure for the fire prevention effect of fire prevention valve after starting is better, and through the cooperation of cylindricality magnetic block with the magnetic sheet, has reduced the pressure of slide to fusing material, guarantees that fusing material is in the state that can normally use always.)

1. The utility model provides a building fire prevention valve, includes body (1), its characterized in that, the upper end fixedly connected with connecting plate (2) of body (1), connecting plate (2) lower extreme is equipped with square groove (16), be equipped with in square groove (16) and be used for gliding slide (3) from top to bottom, be equipped with horizontal chamber (4) in slide (3), be equipped with magnetic pole switching mechanism in horizontal chamber (4), opening (9) and square groove (16) intercommunication are passed through at the interior top of body (1), be equipped with hot trigger mechanism in opening (9), the interior bottom of body (1) is equipped with kerve (10), be equipped with in kerve (10) and be used for confined gravity closing mechanism.

2. A fire damper for buildings according to claim 1, characterized in that the cross section of the pipe body (1) is a square pipe, and the material of the pipe body (1) is a high temperature resistant material.

3. The building fire damper according to claim 1, wherein the magnetic pole switching mechanism comprises a piston block (17) which is slidably connected in a transverse cavity (4), a space of the transverse cavity (4) behind the piston block (17) is filled with an evaporation liquid, a connecting block (19) is arranged in the transverse cavity (4), the connecting block (19) is fixedly connected with the piston block (17) through a connecting rod (18), a threaded rod (6) is horizontally arranged in the transverse cavity (4), the front end of the threaded rod (6) is rotatably connected with the inner wall of the front side of the transverse cavity (4), a columnar magnetic block (5) is fixedly connected on the threaded rod (6), and the threaded rod (6) is in threaded connection with the connecting block (19).

4. A fire damper for buildings according to claim 1, characterized in that the thermal trigger mechanism comprises mounting grooves (7) arranged on both sides of the opening (9), the opening (9) is provided with the fusing material (8), the fusing material (8) is rectangular, and both sides of the fusing material are arranged in the two mounting grooves (7).

5. The building fire damper according to claim 1, wherein the gravity closing mechanism comprises a sliding plate (20) which slides up and down in the bottom groove (10), the lower end of the sliding plate (20) is elastically connected with the inner bottom of the bottom groove (10) through a connecting spring (15), the inner walls of both sides of the bottom groove (10) are provided with a closed groove (12), two closed grooves (12) are provided with an inflatable air bag (13), and the space of the bottom groove (10) below the sliding plate (20) is communicated with the two inflatable air bags (13) through two connecting pipes (14).

6. A fire damper for buildings according to claim 3, characterized in that a magnetic plate (11) is arranged in the pipe body (1), the magnetic plate (11) is located below the bottom groove (10), and the adjacent surfaces of the magnetic plate (11) and the columnar magnetic block (5) are like poles and repel each other.

Technical Field

The invention relates to the field of building fire prevention, in particular to a building fire prevention valve.

Background

In order to prevent fire and toxic high-temperature flue gas from spreading and expanding through the air pipe during fire, a fire damper needs to be arranged on the air pipe of a ventilation and air-conditioning system, and the fire damper used in the existing building has the following use problems:

general fire prevention valve passes through the elasticity of spring and the gravity cooperation of valve body, when high temperature, fusing material melts, carry out closing of valve, and in the use of reality, fusing material under the normal atmospheric temperature can receive the elasticity effect of valve body and spring always, long-term being in the pressurized state, long-term pressurized state can influence fusing material's normal use, and, current fire prevention valve, the valve body receives the action of gravity to move down the back, only contact with the bottom of body, and airtight structure does not, thereby it is relatively poor to make close holistic fire prevention valve seal, influence fire prevention valve's fire prevention effect.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a building fire damper which is provided with a sealing structure, so that the fire damper has a better fire prevention effect after being started, and the pressure of a sliding plate on a fusing material is reduced through the matching of a cylindrical magnetic block and a magnetic plate, so that the fusing material is ensured to be in a normal use state all the time.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a building fire prevention valve, includes the body, the upper end fixedly connected with connecting plate of body, the connecting plate lower extreme is equipped with square groove, square inslot is equipped with and is used for gliding slide from top to bottom, be equipped with horizontal chamber in the slide, be equipped with the magnetic pole shifter mechanism in the horizontal chamber, the interior top of body is passed through opening and square groove intercommunication, be equipped with hot trigger mechanism in the opening, the interior bottom of body is equipped with the kerve, be equipped with in the kerve and be used for confined gravity closing mechanism.

Preferably, the body position cross section is square pipeline, the material of body is high temperature resistant material.

Preferably, the magnetic pole switching mechanism comprises a piston block which is slidably connected in a transverse cavity, the space of the transverse cavity behind the piston block is filled with evaporated liquid, a connecting block is arranged in the transverse cavity, the connecting block is fixedly connected with the piston block through a connecting rod, a threaded rod is horizontally arranged in the transverse cavity, the front end of the threaded rod is rotatably connected with the inner wall of the front side of the transverse cavity, a columnar magnetic block is fixedly connected onto the threaded rod, and the threaded rod is in threaded connection with the connecting block.

Preferably, the thermal trigger mechanism comprises mounting grooves arranged on two sides of the opening, the opening is internally provided with a fusing material, the fusing material is rectangular, and two sides of the fusing material are positioned in the two mounting grooves.

Preferably, the gravity closing mechanism comprises a sliding plate which slides in the bottom groove up and down, the lower end of the sliding plate is elastically connected with the inner bottom of the bottom groove through a connecting spring, the inner walls of the two sides of the bottom groove are provided with two closed grooves, expansion air bags are arranged in the closed grooves, and the bottom groove is positioned in the space below the sliding plate and is communicated with the two expansion air bags through two connecting pipes.

Preferably, a magnetic plate is arranged in the pipe body, the magnetic plate is positioned below the bottom groove, and the adjacent surfaces of the magnetic plate and the columnar magnetic block are repelled by like poles.

Compared with the prior art, the invention has the beneficial effects that:

1. in the using process, under the normal temperature state, the adjacent surfaces between the columnar magnetic blocks and the magnetic plates repel each other in the same polarity, the whole sliding plate can be subjected to an upward repulsive force, the upward repulsive force just offsets the gravity of the sliding plate, and the fusing material is not subjected to any pressure, so that the fusing material can be ensured to be in a normal using state all the time.

2. When meetting the conflagration, there is a large amount of hot cigarettes to pass through the body, when the fusing temperature of temperature arrival fusing material, fusing material can melt, before the process of fusing material fusing, the evaporating liquid has evaporated completely, the evaporation volume of evaporating liquid can grow, at this moment the piston piece antedisplacement, the antedisplacement of piston piece can drive the connecting block antedisplacement through the connecting rod, and the antedisplacement of connecting block can drive the threaded rod and rotate, the rotation of threaded rod can drive the cylindrical magnetic block and take place to rotate, at this moment the adjacent surface opposite attraction of cylindrical magnetic block and magnetic sheet, at this moment receive under the appeal of magnetic sheet and the gravity of self, the slide can move down rapidly, and fall on the kerve, slide can airtight whole body, avoid the hot gas of high temperature to continue to extend away through the body, can effectually prevent stretching of intensity of a fire.

3. In the process that the slide moved down, can drive the sliding plate and move down, the gas that the kerve is located the space below the sliding plate that moves down of sliding plate is impressed two inflation gasbag in, inflation gasbag can effectually avoid having the condition in clearance to appear between slide and the kerve for the fire prevention effect of fire prevention valve after starting is better.

Drawings

Fig. 1 is a schematic structural view of a fire damper for a building according to the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a sectional view taken along line B-B of fig. 1.

In the figure: the device comprises a pipe body 1, a connecting plate 2, a sliding plate 3, a transverse cavity 4, a columnar magnetic block 5, a threaded rod 6, a mounting groove 7, a fusing material 8, an opening 9, a bottom groove 10, a magnetic plate 11, a sealed groove 12, an expansion air bag 13, a connecting pipe 14, a connecting spring 15, a square groove 16, a piston block 17, a connecting rod 18, a connecting block 19 and a sliding plate 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-3, a building fire damper, includes body 1, the upper end fixedly connected with connecting plate 2 of body 1, the lower extreme of connecting plate 2 is equipped with square groove 16, be equipped with in the square groove 16 and be used for gliding slide 3 from top to bottom, be equipped with horizontal chamber 4 in the slide 3, be equipped with the magnetic pole shifter in the horizontal chamber 4, the interior top of body 1 passes through opening 9 and square groove 16 intercommunication, be equipped with hot trigger mechanism in the opening 9, the interior bottom of body 1 is equipped with kerve 10, be equipped with in the kerve 10 and be used for confined gravity closing mechanism.

Wherein, 1 position cross section of body is square pipeline, and the material of body 1 is high temperature resistant material.

Wherein, magnetic pole shifter includes piston block 17 of sliding connection in horizontal chamber 4, and the space that horizontal chamber 4 is located piston block 17 rear side is filled with the evaporating liquid, is equipped with connecting block 19 in the horizontal chamber 4, and connecting block 19 passes through connecting rod 18 and piston block 17 fixed connection, and horizontal intracavity level is equipped with threaded rod 6, and the front end of threaded rod 6 rotates with the front side inner wall in horizontal chamber 4 to be connected, fixedly connected with column magnetism piece 5 on the threaded rod 6, threaded rod 6 and connecting block 19 threaded connection.

Wherein, hot trigger mechanism is equipped with fusing material 8 including setting up at opening 9 both sides mounting groove 7 in opening 9, and fusing material 8 is the rectangle, and its both sides are located two mounting grooves 7.

The gravity sealing mechanism comprises a sliding plate 20 which slides in a bottom groove 10 up and down, the lower end of the sliding plate 20 is elastically connected with the inner bottom of the bottom groove 10 through a connecting spring 15, the inner walls of two sides of the bottom groove 10 are respectively provided with a closed groove 12, two closed grooves 12 are respectively internally provided with an expansion airbag 13, and the bottom groove 10 is positioned below the sliding plate 20 and is communicated with the two expansion airbags 13 through two connecting pipes 14.

Wherein, be equipped with magnetic sheet 11 in the body 1, magnetic sheet 11 is located the below of kerve 10, and magnetic sheet 11 and the adjacent face of column magnetic block 5 like the sex repel each other, and whole slide 3 at this moment can receive an ascending repulsion force, and this ascending repulsion force just offsets the gravity of this slide 3, and fuse material 8 at this moment is in not receiving any pressure, can guarantee that fuse material 8 is in a state that can normally use all the time.

The using method of the invention is as follows:

in the using process, under the normal temperature state, the adjacent surfaces between the columnar magnetic block 5 and the magnetic plate 11 repel each other like poles, the whole sliding plate 3 can be subjected to an upward repulsion force, the upward repulsion force just offsets the gravity of the sliding plate 3, and the fusing material 8 is not subjected to any pressure, so that the fusing material 8 can be ensured to be in a normal use state all the time;

when a fire disaster occurs, a large amount of hot smoke passes through the tube body 1, when the temperature reaches the fusing temperature of the fusing material 8, the fusing material 8 melts (before the fusing process of the fusing material 8, the evaporated liquid is completely evaporated, the evaporation volume of the evaporated liquid is increased, the piston block 17 moves forwards, the connecting block 19 is driven by the connecting rod 18 to move forwards, the connecting block 19 moves forwards to drive the threaded rod 6 to rotate, the cylindrical magnetic block 5 is driven to rotate by the rotation of the threaded rod 6, and the adjacent surfaces of the cylindrical magnetic block 5 and the magnetic plate 11 attract each other in an opposite way), under the action of the attraction of the magnetic plate 11 and the gravity of the magnetic plate, the sliding plate 3 can move downwards rapidly, when the hot air falls onto the bottom groove 10, the sliding plate 3 can seal the whole pipe body 1, so that the hot air with high temperature is prevented from continuously extending out through the pipe body 1, and the fire can be effectively prevented from spreading;

it is worth mentioning that, in the process of the sliding plate 3 moving downwards, the sliding plate 20 can be driven to move downwards, the sliding plate 20 moves downwards to press the gas in the space below the sliding plate 20 in the bottom groove 10 into the two expansion airbags 13, and the expansion of the expansion airbags 13 can effectively avoid the occurrence of the situation that a gap exists between the sliding plate 3 and the bottom groove 10, so that the fireproof effect of the fireproof valve after being started is better.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.