A smoke curtain

Abstract

The utility model relates to a smoke-proof curtain, comprising a sleeve rod and an extension rod; the extension rod is slidably connected to the inside of the sleeve rod, and a protective curtain is arranged on the outside of the sleeve rod and the extension rod; a locking structure is arranged on the outside of the sleeve rod and the extension rod to lock the sleeve rod and the extension rod. The smoke-proof curtain is constructed by pulling the extension rod out of the sleeve rod, and making the two supporting feet contact the two sides of the door frame, while ensuring that the installation positions of the extension rod and the sleeve rod are close to the top of the door frame, and then locking the two through the locking structure. At this time, the protective curtain can be lowered to effectively block the door frame to prevent indoor smoke from being discharged from the entrance door, and a certain gap is reserved between the bottom of the protective curtain and the ground for laying the firefighter's hose. The suspended protective curtain fits the top and left and right sides of the door frame, thereby effectively preventing the leakage of indoor smoke and changing the spread direction of smoke and fire.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection, in particular to a smoke-proof curtain. Background Art

[0002] The smoke produced by the fire contains carbon oxides such as carbon monoxide and carbon dioxide. Carbon monoxide is a colorless, tasteless, odorless toxic gas that is harmful to the human respiratory system and can cause poisoning or even death.

[0003] At present, when firefighters face an indoor fire, they need to open the entrance door and push the indoor smoke and open flames into the room through the fire hose. However, due to the need to pull the water hose, the entrance door is always in an open state, and corresponding personnel are required to be on duty in front of the entrance door or use equipment to control the door. When the entrance door is opened, the airflow between indoors and outdoors will change. Usually, the indoor smoke is in a higher pressure environment, while the outdoor environment is a low pressure environment. This pressure difference will cause the smoke to move along the direction of the airflow, thereby causing the smoke to flow out from the entrance door. The outflow of smoke will pose a certain threat to other residents in the building, and will also change the direction of the spread of the internal fire, endangering the personal safety of firefighters and trapped people. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a smoke-proof curtain, which solves the problem that when the entrance door is opened, the airflow between indoor and outdoor will change. Normally, the indoor smoke is in a higher pressure environment, while the outdoor is in a low pressure environment. This pressure difference will cause the smoke to move along the airflow direction, thereby causing the smoke to flow out from the entrance door.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a smoke-proof curtain, which is used to be installed on the door frame of the entrance door, and includes a sleeve rod and an extension rod;

[0006] The extension rod is slidably connected to the inside of the sleeve rod, and a same protective curtain is arranged on the outside of the sleeve rod and the extension rod;

[0007] A same locking structure is provided on the outer sides of the sleeve rod and the extension rod for locking the sleeve rod and the extension rod;

[0008] A supporting foot is installed at one end of the sleeve rod which is opposite to the extension rod.

[0009] Furthermore, the protective curtain is a water-absorbent cotton cloth with a thickness of not less than one centimeter.

[0010] Furthermore, at least two fluorescent strips are installed on both the front and rear sides of the protective curtain.

[0011] Furthermore, a plurality of anti-slip protrusions are provided on the opposite sides of the two supporting legs.

[0012] Furthermore, the anti-slip protrusion is made of elastic plastic material.

[0013] Furthermore, the locking structure includes two sleeves, the left sleeve is fixedly sleeved on the outside of the sleeve rod, and the right sleeve is movably sleeved on the outside of the extension rod, and a same disc is arranged between the two sleeves, and the inside of the disc is hollow;

[0014] A rotating shaft is rotatably connected to the front and rear sides of the inner wall of the disc, and a locking block is provided on the outer movable sleeve of the rotating shaft. A protrusion is protruded from the outer side of the locking block, and the protrusion is attached to the outer side of the extension rod. A driving plate is installed on the outer side of the locking block to drive the locking block to rotate.

[0015] Furthermore, the protrusion is a rubber block, and the driving plate and the protrusion are vertically distributed.

[0016] Furthermore, a square opening is provided on the upper side of the outer surface of the disc for the driving plate to swing left and right.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. The smoke curtain is constructed by pulling the extension rod out from the inside of the sleeve rod, and making the two supporting feet contact the two sides of the door frame respectively, while ensuring that the installation positions of the extension rod and the sleeve rod are close to the top of the door frame, and then locking the two through the locking structure. At this time, the protective curtain can be lowered to effectively block the door frame to prevent indoor smoke from being discharged from the entrance door, and a certain gap is reserved between the bottom of the protective curtain and the ground for the laying of firefighters' hoses. The suspended protective curtain fits with the top and left and right sides of the door frame, thereby effectively preventing the leakage of indoor smoke and changing the spread direction of smoke and fire.

[0019] 2. The smoke curtain uses a water-absorbing cotton cloth of not less than one centimeter. In actual setting, by spraying water on the cotton cloth, the water-absorbing cotton cloth is completely soaked. On the one hand, the weight of the water-absorbing cotton cloth can be increased. When there is a pressure difference between the inside and outside, the protective curtain 3 is not easily affected by the external airflow and flutters, and can be kept in the required position to ensure the protection effect. On the other hand, it can effectively play a fire prevention effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the locking structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the connection structure between the drive plate and the locking block of the utility model;

[0023] Figure 4 For this utility model Figure 1 A schematic diagram of the enlarged structure in the middle.

[0024] In the figure: 1. sleeve rod; 2. extension rod; 3. protective curtain; 4. support foot; 5. anti-slip protrusion; 6. locking structure; 601. sleeve; 602. disk; 603. rotating shaft; 604. locking block; 605. protrusion; 606. driving plate; 7. fluorescent strip. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 , a smoke curtain in this embodiment is used to be installed on the door frame of the entrance door, and is used to play a protective role in fire, preventing indoor smoke from being discharged from the entrance door;

[0027] Specifically, it includes a sleeve rod 1 and an extension rod 2; the extension rod 2 is slidably connected to the inside of the sleeve rod 1, and a same protective curtain 3 is arranged on the outside of the sleeve rod 1 and the extension rod 2; a same locking structure 6 is arranged on the outside of the sleeve rod 1 and the extension rod 2 to lock the sleeve rod 1 and the extension rod 2; and a supporting foot 4 is installed at the end of the sleeve rod 1 opposite to the extension rod 2.

[0028] In actual use, the extension rod 2 is pulled out from the inside of the sleeve rod 1, and the two supporting feet 4 are respectively in contact with the two sides of the inside of the door frame, while ensuring that the installation positions of the extension rod 2 and the sleeve rod 1 are close to the top of the door frame, and then the two are locked by the locking structure 6. At this time, the protective curtain 3 can be lowered to effectively block the door frame to prevent indoor smoke from being discharged from the entrance door.

[0029] During actual setting, a certain gap is reserved between the bottom of the protective curtain 3 and the ground for laying the firefighters' hoses. The suspended protective curtain 3 fits the top and left and right sides of the door frame, thereby effectively preventing the leakage of indoor smoke.

[0030] Preferably, in order to ensure the fireproof effect of the protective curtain 3 and prevent the protective curtain 3 from fluttering due to the internal and external pressure difference, the protective curtain 3 in this embodiment is a water-absorbent cotton cloth with a thickness of not less than one centimeter.

[0031] In actual settings, by spraying water on the cotton cloth, the water-absorbing cotton cloth is in a completely soaked state. On the one hand, the weight of the water-absorbing cotton cloth can be increased. When a pressure difference occurs between the inside and outside, the protective curtain 3 is not easily affected by the external airflow and flutters, and can be maintained in the required position to ensure the protective effect. On the other hand, it can effectively play a fire prevention role.

[0032] In addition, in order to provide guidance to firefighters and ensure that they can accurately find the location of the entrance door in the smoke, at least two fluorescent strips 7 are installed on the front and rear sides of the protective curtain 3, and the words "Safety Exit" are printed on the fluorescent strips 7 to further provide guidance.

[0033] See also Figure 4 In order to ensure the stability of the installation of the sleeve rod 1 and the extension rod 2, a plurality of anti-skid protrusions 5 are provided on the opposite sides of the two supporting feet 4, and the anti-skid protrusions 5 are made of elastic plastic material.

[0034] During actual setting, when the supporting feet 4 on the sleeve rod 1 and the extension rod 2 are in contact with the door frame, the anti-slip protrusions 5 will be compressed. The compressed anti-slip protrusions 5 have a certain elastic potential energy, thereby increasing the friction between the supporting feet 4 and the door frame, thereby effectively improving the stability after installation.

[0035] See also Figure 2-3 In order to facilitate locking the sleeve rod 1 and the extension rod 2, the locking structure 6 in this embodiment includes two sleeves 601, the left sleeve 601 is fixedly sleeved on the outer side of the sleeve rod 1, and the right sleeve 601 is movably sleeved on the outer side of the extension rod 2. The same disc 602 is arranged between the two sleeves 601, and the interior of the disc 602 is hollow; a rotating shaft 603 is rotatably connected to the front and rear sides of the inner wall of the disc 602, and a locking block 604 is movably sleeved on the outer side of the rotating shaft 603, and a protrusion 605 is protruded from the outer side of the locking block 604 to form a protrusion 605, which is attached to the outer side of the extension rod 2, and a driving plate 606 is installed on the outer side of the locking block 604 for driving the locking block 604 to rotate.

[0036] During actual use, when it is necessary to lock the extension rod 2 and the sleeve rod 1, the driving plate 606 is rotated counterclockwise, and the locking block 604 and the protrusion 605 rotate counterclockwise along with the driving plate 606, and the locking block 604 and the protrusion 605 give the extension rod 2 and the sleeve rod 1 a force to move in opposite directions during the rotation process. At this time, the extension rod 2 and the sleeve rod 1 compress the anti-slip protrusion 5 on the supporting foot 4, and when the protruding part of the protrusion 605 is perpendicular to the outer surface of the extension rod 2, the extension rod 2 can be fixed inside the sleeve rod 1, and the extension rod 2 and the sleeve rod 1 are fixed to the door frame at the same time.

[0037] Furthermore, in order to increase the friction between the protrusion 605 and the extension rod 2, the protrusion 605 is preferably a rubber block in this embodiment.

[0038] In actual settings, when the protrusion 605 is in full contact with the extension rod 2, the protrusion 605 is compressed, and the contact area between the protrusion 605 and the extension rod 2 increases, and the friction between the two also increases, which can effectively improve the stability between the extension rod 2 and the protrusion 605, and ensure the stability of the protective curtain 3 after installation.

[0039] It should be noted that a square opening is provided on the upper side of the outer surface of the disc 602 for the driving plate 606 to swing left and right.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smoke curtain, which is used to be installed on the door frame of the entrance door, characterized in that: It comprises a sleeve rod (1) and an extension rod (2); The extension rod (2) is slidably connected to the inside of the sleeve rod (1), and a same protective curtain (3) is arranged on the outside of the sleeve rod (1) and the extension rod (2); A common locking structure (6) is provided on the outer sides of the sleeve rod (1) and the extension rod (2) for locking the sleeve rod (1) and the extension rod (2); A supporting foot (4) is installed at the end of the sleeve rod (1) opposite to the extension rod (2).

2. A smoke-proof curtain according to claim 1, characterized in that: The protective curtain (3) is a water-absorbing cotton cloth with a thickness of not less than one centimeter.

3. The smoke-proof curtain according to claim 1, characterized in that: At least two fluorescent strips (7) are installed on both the front and rear sides of the protective curtain (3).

4. The smoke-proof curtain according to claim 1, characterized in that: A plurality of anti-slip protrusions (5) are provided on the opposite sides of the two supporting legs (4).

5. The smoke-proof curtain according to claim 4, characterized in that: The anti-slip protrusion (5) is made of elastic plastic material.

6. The smoke-proof curtain according to claim 1, characterized in that: The locking structure (6) comprises two sleeves (601), the left sleeve (601) being fixedly sleeved on the outside of the sleeve rod (1), and the right sleeve (601) being movably sleeved on the outside of the extension rod (2), and a same disk (602) being arranged between the two sleeves (601), and the inside of the disk (602) being hollow; A rotating shaft (603) is rotatably connected to the front and rear sides of the inner wall of the disk (602); a locking block (604) is movably sleeved on the outer side of the rotating shaft (603); a protrusion (605) is protruded from the outer side of the locking block (604); the protrusion (605) is fitted on the outer side of the extension rod (2); and a driving plate (606) is installed on the outer side of the locking block (604) for driving the locking block (604) to rotate.

7. The smoke-proof curtain according to claim 6, characterized in that: The protruding portion (605) is a rubber block, and the driving plate (606) and the protruding portion (605) are vertically distributed.

8. The smoke-proof curtain according to claim 6, characterized in that: A square opening is provided on the upper side of the outer surface of the disc (602) for the driving plate (606) to swing left and right.

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