Smoke exhaust fireproof valve for fire safety

Abstract

The utility model discloses a smoke exhaust fireproof valve for fire safety, and relates to the technical field of smoke exhaust fireproof valves, the smoke exhaust fireproof valve comprises a fireproof valve body, a blade is arranged in the fireproof valve body, and a control mechanism for controlling the blade is arranged at the top of the fireproof valve body. A sealing mechanism used for sealing the blades is arranged in the fireproof valve body. By means of the sealing mechanism, smoke exhaust is started when a fire disaster occurs, when the temperature of smoke in a smoke exhaust pipeline reaches 280 DEG C, the control mechanism is started, the blades can be closed, the sealing block is inserted into the sealing groove through the blades, the surface of the sealing block can extrude the clamping pin and the spring at the moment, and when the position of the sealing block is proper, the sealing block can be closed. And the spring resets to push the clamping pin to enter the clamping groove, so that the blade is fixed to the connecting block through the sealing block, the two ends of the blade are sealed, and the effect that the fire is prevented from spreading to the layer where the fan room is located through the fireproof valve body when a fire disaster occurs is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust fire dampers, in particular to a smoke exhaust fire damper for fire safety. Background Technique

[0002] A smoke exhaust fire damper is a commonly used fire protection component, generally installed on the pipeline of a mechanical smoke exhaust system. It is normally in an open state. When a fire occurs, it opens for smoke exhaust. When the smoke temperature in the smoke exhaust pipeline reaches 280 degrees, it closes and meets the requirements of smoke leakage and fire resistance integrity within a certain time, playing a role in isolating smoke and fire. However, when the current fire protection smoke exhaust fire damper is in use, the sealing effect is not very good. In this case, when a fire occurs, the fire protection smoke exhaust fire damper cannot be closed completely, which will affect the normal fire prevention effect.

[0003] Based on this, a smoke exhaust fire damper for fire safety is now provided, which can eliminate the disadvantages of existing devices. Content of the Utility Model

[0004] The purpose of the utility model is to provide a smoke exhaust fire damper for fire safety to solve the problem that the sealing effect of the smoke exhaust fire damper in the background technique is not very good.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A smoke exhaust fire damper for fire safety includes a fire damper body. Blades are arranged inside the fire damper body. A control mechanism for controlling the blades is arranged at the top of the fire damper body. A sealing mechanism for sealing the blades is arranged inside the fire damper body.

[0007] On the basis of the above technical solutions, the utility model also provides the following optional technical solutions:

[0008] In an optional solution: The control mechanism includes a fixed sleeve, a driving motor, a first bevel gear, a second bevel gear, a connecting rod, a rotating shaft, a grip and an indicator. The fixed sleeve is fixedly connected to the top of the fire damper body. The driving motor is fixedly connected inside the fixed sleeve. One end of the driving motor is fixedly connected to the first bevel gear. The surface of the first bevel gear is meshed with the second bevel gear. The connecting rod is fixedly connected inside the second bevel gear. One end of the connecting rod is fixedly connected to the rotating shaft. One end of the rotating shaft is rotatably connected to the fire damper body. The top of the connecting rod is fixedly connected to the grip. One side of the top of the fixed sleeve is fixedly connected to the indicator.

[0009] In an optional solution: The connecting rod and the fire damper body form a rotating structure through the rotating shaft.

[0010] In an alternative embodiment: The sealing mechanism includes a connecting block, a sealing groove, a spring groove, a spring, a locking pin, a sealing block, and a clamping groove. A connecting block is fixedly connected inside the fire damper body. A sealing groove is formed on the surface of the connecting block. One end of the sealing groove is provided with a spring groove. A spring is disposed inside the spring groove. One end of the spring is fixedly connected to one end of the spring groove, and the other end is fixedly connected to a locking pin. A sealing block is fixedly connected to the front end of one side of the blade. A clamping groove is formed at the bottom of the sealing block. One end of the locking pin is engaged with the clamping groove.

[0011] In an alternative embodiment: The inner wall dimensions of the sealing groove match the outer wall dimensions of the sealing block.

[0012] In an alternative embodiment: The diameter dimensions of the spring groove match the diameter dimensions of the spring.

[0013] In an alternative embodiment: Fixed blocks are fixedly connected to both ends of the fire damper body. Multiple fixing holes are formed on the surface of the fixed blocks.

[0014] In an alternative embodiment: The blade is made of stainless steel.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] With the sealing mechanism of the present utility model, during a fire, the smoke exhaust is activated. When the temperature of the smoke in the smoke exhaust duct reaches 280 degrees, the control mechanism is activated to close the blade. The sealing block is inserted into the sealing groove through the blade. At this time, the surface of the sealing block will squeeze the locking pin and the spring. When the position of the sealing block is appropriate, the spring resets and pushes the locking pin into the inside of the clamping groove, so that the blade is fixed to the connecting block through the sealing block, and then both ends of the blade are sealed, achieving the effect of preventing the fire from spreading to the floor where the fan room is located through the fire damper body during a fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present utility model.

[0018] Figure 2 is a structural schematic diagram of the cooperation between the fixed block and the fixing hole of the present utility model.

[0019] Figure 3 is a structural schematic diagram of the control mechanism of the present utility model.

[0020] Figure 4 is a structural schematic diagram of the sealing mechanism of the present utility model.

[0021] Figure 5 is of the present utility model Figure 4 magnified schematic diagram of A.

[0022] Annotation of reference numerals: 1, fire damper body; 2, fixing block; 3, fixing hole; 4, blade; 5, control mechanism; 501, fixing sleeve; 502, drive motor; 503, first bevel gear; 504, second bevel gear; 505, connecting rod; 506, rotating shaft; 507, grip; 508, indicating mark; 6, sealing mechanism; 601, connecting block; 602, sealing groove; 603, spring groove; 604, spring; 605, locking pin; 606, sealing block; 607, clamping groove. Detailed implementation manners

[0023] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] In one embodiment, as Figures 1 - 5 shown, a smoke exhaust fire damper for fire safety includes a fire damper body 1. A blade 4 is provided inside the fire damper body 1. A control mechanism 5 for controlling the blade 4 is provided at the top of the fire damper body 1 to control the opening and closing of the blade 4. A sealing mechanism 6 for sealing the blade 4 is provided inside the fire damper body 1, which can enhance the sealing performance of the blade 4 and avoid the spread of fire through the fire damper body 1 to the floor where the fan room is located when a fire occurs.

[0025] In one embodiment, as Figure 3 shown, the control mechanism 5 includes a fixing sleeve 501, a drive motor 502, a first bevel gear 503, a second bevel gear 504, a connecting rod 505, a rotating shaft 506, a grip 507 and an indicating mark 508. The fixing sleeve 501 is fixedly connected to the top of the fire damper body 1. The drive motor 502 is fixedly connected inside the fixing sleeve 501. One end of the drive motor 502 is fixedly connected to the first bevel gear 503. The surface of the first bevel gear 503 is meshed with the second bevel gear 504. The connecting rod 505 is fixedly connected inside the second bevel gear 504. One end of the connecting rod 505 is fixedly connected to the rotating shaft 506. One end of the rotating shaft 506 is rotatably connected to the fire damper body 1. When a fire occurs, smoke exhaust is started. When the temperature of the flue gas in the smoke exhaust pipe reaches 280 degrees, the drive motor 502 on the fire damper body 1 is started. The drive motor 502 drives the first bevel gear 503 to rotate. The first bevel gear drives the second bevel gear 504 to rotate. When the second bevel gear 504 rotates, it drives the connecting rod 505 to rotate, so that the blade 4 can be closed, thereby avoiding the spread of fire through the fire damper body 1 to the floor where the fan room is located. The top of the connecting rod 505 is fixedly connected to the grip 507. The opening and closing of the blade 4 can be manually controlled through the grip 507. One side of the top of the fixing sleeve 501 is fixedly connected to the indicating mark 508, which is used to indicate the rotation direction of the grip 507.

[0026] In one embodiment, as Figure 3 shown, the connecting rod 505 forms a rotating structure with the fire damper body 1 through a rotating shaft 506. When the connecting rod 505 rotates, the rotating shaft 506 can support one end of the connecting rod 505 and at the same time can prevent the connecting rod 505 from shaking when rotating.

[0027] In one embodiment, as Figures 4 - 5 shown, the sealing mechanism 6 includes a connecting block 601, a sealing groove 602, a spring groove 603, a spring 604, a retaining pin 605, a sealing block 606 and a clamping groove 607. The connecting block 601 is fixedly connected inside the fire damper body 1. A sealing groove 602 is formed on the surface of the connecting block 601. A spring groove 603 is formed at one end of the sealing groove 602. A spring 604 is arranged inside the spring groove 603. One end of the spring 604 is fixedly connected to one end of the spring groove 603 and the other end is fixedly connected to the retaining pin 605. A sealing block 606 is fixedly connected to the front end of one side of the blade 4. A clamping groove 607 is formed at the bottom of the sealing block 606. One end of the retaining pin 605 is matched with the clamping groove 607. When the blade 4 is closed, the sealing block 606 is inserted into the sealing groove 602 through the blade 4. At this time, the surface of the sealing block 606 will squeeze the retaining pin 605 and the spring 604. When the position of the sealing block 606 is appropriate, the spring 604 resets and pushes the retaining pin 605 into the inside of the clamping groove 607, so that the blade 4 is fixed on the connecting block 601 through the sealing block 606, and further seals both ends of the blade 4, preventing the fire from spreading to the floor where the fan room is located through the fire damper body 1 when a fire occurs.

[0028] In one embodiment, as Figure 4 shown, the inner wall size of the sealing groove 602 coincides with the outer wall size of the sealing block 606. When the sealing block 606 slides inside the sealing groove 602, the sealing groove 602 can limit the sliding of the sealing block 606 and prevent the sealing block 606 from shaking inside the sealing groove 602.

[0029] In one embodiment, as Figure 5 shown, the diameter size of the spring groove 603 coincides with the diameter size of the spring 604. When the spring 604 expands and contracts, the spring groove 603 will limit the spring 604 and prevent the spring 604 from shaking.

[0030] In one embodiment, as Figure 2 shown, fixing blocks 2 are fixedly connected to both ends of the fire damper body 1. A plurality of fixing holes 3 are formed on the surface of the fixing blocks 2. By screwing the bolts, the bolts penetrate through the fixing holes 3 and are threadedly connected to the smoke exhaust pipe, so that the fire damper body 1 is fixed on the smoke exhaust pipe through the fixing blocks 2.

[0031] In one embodiment, as Figure 2 shown, the blade 4 is made of stainless steel, which has good heat resistance and makes the blade 4 more durable.

[0032] Working principle: The above embodiment discloses a smoke exhaust and fire prevention valve for fire safety. Among them, in case of a fire, the smoke exhaust is turned on. When the temperature of the smoke in the smoke exhaust pipe reaches 280 degrees, the drive motor 502 on the fire prevention valve body 1 is started. The drive motor 502 drives the first bevel gear 503 to rotate. The first bevel gear drives the second bevel gear 504 to rotate. When the second bevel gear 504 rotates, it drives the connecting rod 505 to rotate, so that the blade 4 can be closed. The sealing block 606 is inserted into the sealing groove 602 through the blade 4. At this time, the surface of the sealing block 606 will squeeze the retaining pin 605 and the spring 604. When the position of the sealing block 606 is appropriate, the spring 604 resets and pushes the retaining pin 605 into the inside of the clamping groove 607, so that the blade 4 is fixed on the connecting block 601 through the sealing block 606, and then both ends of the blade 4 are sealed, avoiding the spread of the fire to the floor where the fan room is located through the fire prevention valve body 1 in case of a fire.

[0033] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A smoke exhaust fire damper for fire safety, comprising a fire damper body (1), and blades (4) are arranged inside the fire damper body (1), characterized in that: A control mechanism (5) for controlling the blades (4) is provided at the top of the fire damper body (1), and a sealing mechanism (6) for sealing the blades (4) is provided inside the fire damper body (1); the sealing mechanism (6) includes a connecting block (601), a sealing groove (602), a spring groove (603), a spring (604), a retaining pin (605), a sealing block (606) and a clamping groove (607). A connecting block (601) is fixedly connected inside the fire damper body (1). A sealing groove (602) is formed on the surface of the connecting block (601). A spring groove (603) is formed at one end of the sealing groove (602). A spring (604) is provided inside the spring groove (603). One end of the spring (604) is fixedly connected to one end of the spring groove (603), and the other end is fixedly connected to a retaining pin (605). A sealing block (606) is fixedly connected to the front end of one side of the blade (4). A clamping groove (607) is formed at the bottom of the sealing block (606). One end of the retaining pin (605) is engaged with the clamping groove (607).

2. The smoke exhaust and fire damper for fire safety according to claim 1, wherein: The control mechanism (5) includes a fixed sleeve (501), a driving motor (502), a first bevel gear (503), a second bevel gear (504), a connecting rod (505), a rotating shaft (506), a grip (507) and an indicator (508). A fixed sleeve (501) is fixedly connected to the top of the fire damper body (1). A driving motor (502) is fixedly connected inside the fixed sleeve (501). A first bevel gear (503) is fixedly connected to one end of the driving motor (502). A second bevel gear (504) is meshed with the surface of the first bevel gear (503). A connecting rod (505) is fixedly connected inside the second bevel gear (504). One end of the connecting rod (505) is fixedly connected to a rotating shaft (506). One end of the rotating shaft (506) is rotatably connected to the fire damper body (1). A grip (507) is fixedly connected to the top of the connecting rod (505). An indicator (508) is fixedly connected to one side of the top of the fixed sleeve (501).

3. A smoke exhaust fire damper for fire safety according to claim 2, characterized in that: The connecting rod (505) and the fire damper body (1) form a rotating structure through the rotating shaft (506).

4. The smoke exhaust and fire damper for fire safety according to claim 1, characterized in that: The inner wall dimensions of the sealing groove (602) match the outer wall dimensions of the sealing block (606).

5. The smoke exhaust fire damper for fire safety according to claim 1, wherein: The diameter dimensions of the spring groove (603) match the diameter dimensions of the spring (604).

6. The smoke exhaust fire damper for fire safety according to claim 1, characterized in that: Fixed blocks (2) are fixedly connected to both ends of the fire damper body (1), and multiple fixing holes (3) are formed on the surfaces of the fixed blocks (2).

7. A smoke exhaust and fire damper for fire safety according to claim 1, characterized in that: The blade (4) is made of stainless steel.

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