Smoke exhaust fireproof valve of ventilation equipment

Abstract

The utility model relates to the technical field of fireproof valves, and discloses a smoke exhaust fireproof valve of ventilation equipment, which comprises a shell, a valve blade and a sealing mechanism are arranged in the shell, the sealing mechanism comprises a cover body, a bidirectional threaded rod, a connecting rod and a sealing plate, the cover body is fixedly arranged in the shell, and the bidirectional threaded rod is fixedly arranged in the shell. The two-way threaded rod is rotationally connected to the interior of the cover body, the two-way threaded rod penetrates through the connecting rod and is in threaded connection with the connecting rod, and the sealing plate is fixedly installed at one end of the connecting rod; according to the smoke exhaust fireproof valve of the ventilation equipment, opening and closing of the shell are controlled through the rotatable valve blades, when the fireproof valve is closed, a motor is started, the motor drives a connecting shaft rod to rotate, the connecting shaft rod drives a first bevel gear to rotate, and the first bevel gear drives a bidirectional threaded rod to rotate through a second bevel gear, so that a connecting rod drives two sealing plates to move to gaps of the valve blades; and a complete sealing effect is achieved.

Description

Technical Field

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

[0002] At present, high-rise buildings are all equipped with ventilation ducts, and smoke exhaust fire dampers are installed in the ventilation ducts. The smoke exhaust fire dampers include a valve body and an actuator fixed outside the valve body (generally fixed above the valve body). A valve leaf is provided in the channel of the valve body, and a main shaft is fixed on the valve leaf. The main shaft extends out of the valve body and is connected to the actuator. The actuator drives the valve leaf to rotate by rotating the main shaft, thereby realizing the opening and closing of the entire valve body. If the valve leaf is parallel to the cross section of the channel in the valve body, the valve leaf blocks the channel and the valve body is closed. When the valve leaf is perpendicular to the cross section of the channel in the valve body, the opening of the entire valve body is the largest.

[0003] The existing Chinese patent with patent announcement number CN206001022U proposes a smoke exhaust fire damper, including a valve body, a valve leaf arranged in the valve body channel and an actuator, a main shaft is fixed on the valve leaf, one end of the main shaft is connected to the actuator, the valve leaf forms a rotational fit with the valve body through the main shaft, the two sides of the valve leaf are respectively the front and the back, one side edge of the front and one side edge of the back are fixedly covered with sealing sheets, and the sealing sheets on the front and the back are centrally symmetrical.

[0004] With respect to the above-mentioned related technologies, the inventors believe that since the two ends of the valve leaf need to rotate with the valve body, there is a gap between the two ends of the valve leaf and the valve body, and the valve body still cannot achieve a complete sealing effect when the valve leaf is closed. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a smoke exhaust fire damper for ventilation equipment.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a smoke exhaust fire damper of a ventilation device, comprising a shell, a valve leaf and a sealing mechanism are arranged inside the shell, the sealing mechanism comprises a cover body, a two-way threaded rod, a connecting rod and a sealing plate, the cover body is fixedly installed inside the shell, the two-way threaded rod is rotatably connected to the inside of the cover body, the two-way threaded rod passes through the connecting rod and is threadedly connected to the connecting rod, and the sealing plate is fixedly installed at one end of the connecting rod.

[0009] Preferably, a motor is fixedly installed inside the cover body, and a connecting rod is fixedly installed on the output end of the motor, one end of the connecting rod is fixedly installed with bevel gear 1, and bevel gear 1 is meshingly connected with bevel gear 2, and bevel gear 2 is fixedly sleeved on the middle section of the bidirectional threaded rod.

[0010] Preferably, a sliding hole is opened on the cover body, and the connecting rod passes through the sliding hole and is slidably connected with the sliding hole.

[0011] Preferably, a groove is provided on the back side of the sealing plate, and a sealing gasket is movably connected inside the groove.

[0012] Preferably, a cylinder is fixedly mounted on the front of the sealing plate, and an output end of the cylinder is fixedly connected to the front of the sealing gasket, and the output end of the cylinder passes through the front of the sealing plate and extends to the inside of the groove, and the output end of the cylinder is movably connected to the sealing plate.

[0013] Preferably, the front side of the cover body is fixedly connected with a cover plate by bolts.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a smoke exhaust fire damper for ventilation equipment, which has the following beneficial effects:

[0016] 1. The smoke exhaust fire damper of the ventilation equipment controls the opening and closing of the shell through a rotatable valve leaf. When the fire damper is closed, the motor is started, the motor drives the connecting rod to rotate, the connecting rod drives the bevel gear 1 to rotate, the bevel gear 1 drives the two-way threaded rod to rotate through the bevel gear 2, so that the connecting rod drives the two sealing plates to move to the gap of the valve leaf, so as to achieve a complete sealing effect.

[0017] 2. The smoke exhaust fire damper of the ventilation equipment starts the cylinder while sealing, and the cylinder drives the sealing gasket to fit tightly against the valve leaf, thereby improving the sealing effect. By setting a cover plate, the inside of the cover body can be easily removed for inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the cover body of the utility model;

[0021] Figure 3 It is an enlarged view of A of the present utility model.

[0022] In the figure: 1, housing; 2, valve leaf; 3, sealing mechanism; 301, cover; 302, motor; 303, connecting rod; 304, bevel gear 1; 305, bidirectional threaded rod; 306, bevel gear 2; 307, connecting rod; 308, sliding hole; 309, sealing plate; 4, cover plate; 5, sealing gasket; 6, groove; 7, cylinder. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Example 1

[0025] like Figure 1-3 As shown, the utility model provides a smoke exhaust fire damper of a ventilation device, comprising a shell 1, a valve leaf 2 and a sealing mechanism 3 are arranged inside the shell 1, the sealing mechanism 3 comprises a cover body 301, a bidirectional threaded rod 305, a connecting rod 307 and a sealing plate 309, the cover body 301 is fixedly installed inside the shell 1, the bidirectional threaded rod 305 is rotatably connected inside the cover body 301, the bidirectional threaded rod 305 penetrates the connecting rod 307 and is threadedly connected to the connecting rod 307, the sealing plate 309 is fixedly installed at one end of the connecting rod 307, a motor 302 is fixedly installed inside the cover body 301, and a connecting rod 303 is fixedly installed at the output end of the motor 302, a bevel gear 1 304 is fixedly installed on one end of the connecting rod 303, and the bevel gear 1 304 is meshedly connected with a bevel gear 2 306, the bevel gear 2 306 is fixedly sleeved on the middle section of the bidirectional threaded rod 305, a sliding hole 308 is opened on the cover body 301, and the connecting rod 307 penetrates the sliding hole 308 and is slidably connected to the sliding hole 308.

[0026] In this embodiment, the opening and closing of the housing 1 is controlled by the rotatable valve leaf 2. When the fire damper is closed, the motor 302 is started, the motor 302 drives the connecting rod 303 to rotate, the connecting rod 303 drives the bevel gear 1 304 to rotate, the bevel gear 1 304 drives the bidirectional threaded rod 305 to rotate through the bevel gear 2 306, so that the connecting rod 307 drives the two sealing plates 309 to move to the gap of the valve leaf 2, thereby achieving a completely sealed effect.

[0027] Example 2

[0028] like Figure 1-3As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a groove 6 is opened on the back of the sealing plate 309, and a sealing gasket 5 is movably connected inside the groove 6, a cylinder 7 is fixedly installed on the front of the sealing plate 309, and the output end of the cylinder 7 is fixedly connected to the front of the sealing gasket 5, and the output end of the cylinder 7 passes through the front of the sealing plate 309 and extends to the inside of the groove 6, the output end of the cylinder 7 is movably connected to the sealing plate 309, and the front of the cover body 301 is fixedly connected to the cover plate 4 by bolts.

[0029] In this embodiment, by starting the cylinder 7 while sealing, the cylinder 7 drives the sealing gasket 5 to be close to the valve leaf 2, thereby improving the sealing effect. By providing the cover plate 4, the inside of the cover body 301 can be easily removed for inspection.

[0030] The following is a detailed description of the working principle of the smoke exhaust fire damper of this ventilation equipment.

[0031] like Figure 1-3 As shown, when in use, the opening and closing of the shell 1 is controlled by the rotatable valve leaf 2. When the fire damper is closed, the motor 302 is started, the motor 302 drives the connecting rod 303 to rotate, the connecting rod 303 drives the bevel gear 1 304 to rotate, the bevel gear 1 304 drives the two-way threaded rod 305 to rotate through the bevel gear 2 306, so that the connecting rod 307 drives the two sealing plates 309 to move to the gap of the valve leaf 2, so as to achieve a complete sealing effect. By starting the cylinder 7 while sealing, the cylinder 7 drives the sealing gasket 5 to fit tightly against the valve leaf 2, thereby improving the sealing effect. By providing the cover plate 4, the inside of the cover body 301 can be easily removed for inspection.

Claims

1. A smoke exhaust fire damper for ventilation equipment, comprising a housing (1), characterized in that: The housing (1) is provided with a valve leaf (2) and a sealing mechanism (3), wherein the sealing mechanism (3) comprises a cover body (301), a bidirectional threaded rod (305), a connecting rod (307) and a sealing plate (309), wherein the cover body (301) is fixedly mounted inside the housing (1), the bidirectional threaded rod (305) is rotatably connected inside the cover body (301), the bidirectional threaded rod (305) passes through the connecting rod (307) and is threadedly connected to the connecting rod (307), and the sealing plate (309) is fixedly mounted on one end of the connecting rod (307).

2. The smoke exhaust fire damper of ventilation equipment according to claim 1, characterized in that: A motor (302) is fixedly installed inside the cover body (301), and a connecting rod (303) is fixedly installed at the output end of the motor (302), a bevel gear 1 (304) is fixedly installed at one end of the connecting rod (303), and the bevel gear 1 (304) is meshingly connected with the bevel gear 2 (306), and the bevel gear 2 (306) is fixedly sleeved on the middle section of the bidirectional threaded rod (305).

3. The smoke exhaust fire damper of ventilation equipment according to claim 2, characterized in that: The cover body (301) is provided with a sliding hole (308), and the connecting rod (307) passes through the sliding hole (308) and is slidably connected to the sliding hole (308).

4. The smoke exhaust fire damper of ventilation equipment according to claim 1, characterized in that: The back side of the sealing plate (309) is provided with a groove (6), and a sealing gasket (5) is movably connected inside the groove (6).

5. The smoke exhaust fire damper of ventilation equipment according to claim 4, characterized in that: The front side of the sealing plate (309) is fixedly mounted with a cylinder (7), and the output end of the cylinder (7) is fixedly connected to the front side of the sealing gasket (5). The output end of the cylinder (7) passes through the front side of the sealing plate (309) and extends to the inside of the groove (6). The output end of the cylinder (7) is movably connected to the sealing plate (309).

6. The smoke exhaust fire damper of ventilation equipment according to claim 1, characterized in that: The front side of the cover body (301) is fixedly connected to a cover plate (4) via bolts.

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