Fireproof valve with high sealing performance

Abstract

The utility model relates to the technical field of fireproof valves, in particular to a fireproof valve with high sealing performance, which comprises a valve body, an actuating mechanism is arranged on the outer wall of the valve body, the output end of the actuating mechanism is connected with a support shaft, a blade is arranged in the middle of the valve body, and the blade is movably connected with the valve body through the support shaft. Clamping grooves are formed in the two sides of the outer wall of each blade. The blades can be driven to rotate through the executing mechanism, so that when the fireproof valve is in a closed state, the driving rolling shaft drives the protruding blocks to rotate, the protruding blocks drive the moving plates and the sealing baffles to move in the direction of the fireproof valve when rotating, and the sealing baffles are movably clamped and embedded into clamping grooves in the two sides of the blades; and a gap between the blade and the fireproof valve can be blocked, the air leakage condition is reduced, and fire spreading is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of fire dampers, in particular to a fire damper with high sealing performance. Background Technique

[0002] A fire damper is a device for fire safety, usually installed in the ventilation ducts or pipelines of buildings, used to prevent the spread of fire during a fire and protect the safety of buildings and personnel. The fire damper mainly cuts off the way of fire spread by closing the ducts or pipelines to prevent the spread of fire.

[0003] The blades of the fire damper are the key components in the fire damper. It mainly controls the spread of fire during a fire through the opening and closing of the blades. When the existing fire damper is closed, only controlling the rotation or movement of the blades to the closed position prevents the spread of fire. When the blades rotate to the closed position, there is still a gap between the blades and the valve body. At this time, the smoke, hot air, etc. of the fire escape through the gap, resulting in poor sealing performance of the fire damper, weakening the effect of fire prevention and smoke exhaust, leading to the continuous spread of fire and unable to ensure the effectiveness and safety of the fire damper. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a fire damper with high sealing performance.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A fire damper with high sealing performance includes a valve body. An actuator is arranged on the outer wall of the valve body. The output end of the actuator is connected with a support shaft. A blade is arranged in the middle of the valve body. The blade is movably connected with the valve body through the support shaft. Clamping grooves are formed on both sides of the outer wall of the blade;

[0007] Connecting frames are symmetrically arranged on both sides of the outer wall of the valve body. A motor is arranged in the connecting frame. The output end of the motor penetrates through the connecting frame and is connected with a driving roller. A convex block is fixedly connected to the outer wall of the driving roller. A toothed edge is arranged on the outer wall of the convex block. A connecting plate is fixedly connected to the outer wall of the connecting frame. A moving plate is arranged in the connecting plate. A rack is arranged on the outer wall of the moving plate. The rack is meshed with the toothed edge. One end of the moving plate is connected with a connecting shaft. One end of the connecting shaft penetrates into the interior of the valve body and is connected with a sealing baffle.

[0008] Preferably, the actuator includes a drive motor located on one side of the outer wall of the valve body. The output end of the drive motor is connected to a drive rod. One end of the drive rod is connected to a connecting rod through a central shaft. One end of the connecting rod is connected to a connecting member through a central shaft. A clamping groove is formed at one end of the connecting member away from the connecting rod. A support shaft is arranged in the clamping groove. The support shaft penetrates the valve body and is fixedly connected to the blade.

[0009] Preferably, a plurality of thimbles are fixedly connected to both sides of the outer wall of the blade. Accommodating cavities are fixedly connected to both sides of the inner wall of the valve body. High-temperature resistant sealant is filled inside the accommodating cavities.

[0010] Preferably, the contact surface between the accommodating cavity and the blade is L-shaped.

[0011] Preferably, sealing grooves are symmetrically formed on both sides of the inner wall of the valve body. Sealing washers matched with the sealing grooves are fixedly connected to both sides of the outer wall of the blade.

[0012] Preferably, a protective cover is sleeved outside the contact point between the connecting member and the support shaft, and the protective cover is fixedly connected to the outer wall of the support plate.

[0013] The beneficial effects of the present utility model are as follows: When the fire damper is in the closed state, the actuator can drive the blade to rotate. By using the driving roller to drive the convex block to rotate, when the convex block rotates, it drives the moving plate and the sealing baffle to move towards the fire damper, and the sealing baffle is moved and clamped into the clamping grooves on both sides of the blade, which is beneficial to blocking the gap between the blade and the fire damper and reducing air leakage, preventing the spread of fire.

[0014] When the blade is in the closed state, when the bottom of the blade contacts the L-shaped surface of the accommodating cavity, the thimbles on both sides of it pierce the accommodating cavity, and the high-temperature resistant sealant inside the accommodating cavity spreads out to fill the contact gaps between the blade, the sealing baffle and the fire damper, forming an effective sealing layer around the blade and the fire damper, preventing the smoke, hot air and flame of the fire from escaping from the gap between the blade and the fire damper, effectively improving the sealing performance of the fire damper, increasing the sealing effect, and ensuring the effectiveness and safety of the fire damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of a fire damper with high sealing performance proposed by the present utility model;

[0016] Figure 2 is a fire damper with high sealing performance proposed by the present utility model Figure 1 structural schematic diagram of the enlarged part at point A;

[0017] Figure 3Schematic diagram of the connection structure between the blade and the connecting frame of a fire damper with high sealing performance proposed by the present utility model;

[0018] Figure 4 Schematic diagram of the connection structure between the blade and the actuator of a fire damper with high sealing performance proposed by the present utility model;

[0019] Figure 5 Schematic diagram of the connection structure between the driving roller and the sealing baffle of a fire damper with high sealing performance proposed by the present utility model.

[0020] In the figure:

[0021] 1. Valve body; 2. Support plate; 201. Driving motor; 202. Driving rod; 203. Connecting rod; 3. Connecting piece; 4. Support shaft; 5. Blade; 501. Clamping groove; 502. Thumb latch; 6. Connecting frame; 601. Motor; 602. Driving roller; 603. Convex block; 604. Connecting plate; 605. Moving plate; 606. Sealing baffle; 7. Accommodation cavity; 701. Sealing groove; 702. Sealing gasket; 8. Protective cover. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art.

[0024] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0025] Embodiment:

[0026] Refer to Figures 1-5 , a fire damper with high sealing performance, including a valve body 1. An actuator is provided on the outer wall of the valve body 1. The output end of the actuator is connected to a support shaft 4. A blade 5 is provided in the middle of the valve body 1. The blade 5 is movably connected to the valve body 1 through the support shaft 4. Clamping grooves 501 are opened on both sides of the outer wall of the blade 5;

[0027] On both sides of the outer wall of the valve body 1, connecting brackets 6 are symmetrically arranged. A motor 601 is arranged inside the connecting bracket 6. The output end of the motor 601 penetrates through the connecting bracket 6 and is connected with a driving roller 602. A convex block 603 is fixedly connected to the outer wall of the driving roller 602. A toothed edge is arranged on the outer wall of the convex block 603. A connecting plate 604 is fixedly connected to the outer wall of the connecting bracket 6. A moving plate 605 is arranged inside the connecting plate 604. A rack is arranged on the outer wall of the moving plate 605. The rack meshes with the toothed edge. One end of the moving plate 605 is connected with a connecting shaft. One end of the connecting shaft penetrates into the interior of the valve body 1 and is connected with a sealing baffle 606.

[0028] The actuator includes a driving motor 201 located on one side of the outer wall of the valve body 1. The output end of the driving motor 201 is connected with a driving rod 202. One end of the driving rod 202 is connected with a connecting rod 203 through a central shaft. One end of the connecting rod 203 is connected with a connecting piece 3 through a central shaft. A clamping groove is arranged at the end of the connecting piece 3 far away from the connecting rod 203. A support shaft 4 is arranged inside the clamping groove. The support shaft 4 penetrates through the valve body 1 and is fixedly connected with the blade 5.

[0029] A number of thimbles 502 are fixedly connected to both sides of the outer wall of the blade 5. Accommodating cavities 7 are fixedly connected to both sides of the inner wall of the valve body 1. The interior of the accommodating cavity 7 is filled with high-temperature sealant.

[0030] The contact surface between the accommodating cavity 7 and the blade 5 is L-shaped.

[0031] Sealing grooves 701 are symmetrically arranged on both sides of the inner wall of the valve body 1. Sealing washers 702 which are matched with the sealing grooves 701 are fixedly connected to both sides of the outer wall of the blade 5.

[0032] A protective cover 8 is sleeved outside the contact point between the connecting piece 3 and the support shaft 4, and the protective cover 8 is fixedly connected to the outer wall of the support plate 2.

[0033] In this implementation scheme, when it is necessary to use this fire damper to prevent the spread of fire, first, control the driving motor 201 to drive the driving rod 202 to rotate counterclockwise. When the driving rod 202 rotates, it drives the connecting rod 203 to rotate. When the connecting rod 203 rotates, it drives the connecting piece 3 to rotate with the central shaft as the fulcrum. When the connecting piece 3 rotates, it drives the support shaft 4 in the clamping groove to rotate counterclockwise. While the support shaft 4 rotates, it immediately drives the blade 5 to rotate, so that the blade 5 rotates to a horizontal state with the valve body 1, thereby closing the blade 5.

[0034] Specifically, when the blade 5 is closed, the motors 601 on both sides of the valve body 1 are started respectively. When the motors 601 operate, they drive the drive rollers 602 to rotate in the clockwise direction. When the drive rollers 602 rotate, they drive the bumps 603 to rotate. Since the toothed edges of the bumps 603 are engaged with the rack, when the toothed edges on the bumps 603 rotate, they drive the moving plate 605 to move towards the valve body 1. When the moving plate 605 moves, it drives the sealing baffle 606 to move until the sealing baffle 606 is moved and clamped into the clamping grooves 501 on both sides of the blade 5, thereby blocking the gap between the blade 5 and the valve body 1 and reducing the occurrence of air leakage.

[0035] When the blade 5 rotates, it also drives the ejector pin 502 to rotate. When the blade 5 drives the ejector pin 502 to rotate to the horizontal state, the sealing gaskets 702 on both sides of the blade 5 are clamped into the sealing grooves 701. At the same time, when the bottom of the blade 5 contacts the L-shaped surface of the receiving cavity 7, the ejector pins 502 on both sides of it pierce the receiving cavity 7. Subsequently, the high-temperature resistant sealant inside the receiving cavity 7 spreads out and fills the contact gaps between the blade 5, the sealing baffle 606 and the valve body 1, thereby forming an effective sealing layer around the blade 5 and the valve body 1, preventing the smoke, hot air and flames of the fire from escaping from the gap between the blade 5 and the valve body 1, effectively improving the sealing performance of the valve body 1 and ensuring the safety of the building and personnel.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "plurality" is two or more unless otherwise specifically defined.

[0038] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A fire damper with high sealing performance, comprising a valve body (1), characterized in that: An actuator is arranged on the outer wall of the valve body (1), the output end of the actuator is connected to a support shaft (4), a blade (5) is arranged in the middle of the valve body (1), the blade (5) is movably connected to the valve body (1) via the support shaft (4), and positioning grooves (501) are arranged on both sides of the outer wall of the blade (5); Connecting frames (6) are symmetrically arranged on both sides of the outer wall of the valve body (1), a motor (601) is arranged inside the connecting frame (6), an output end of the motor (601) passes through the connecting frame (6) and is connected to a driving roller (602), a protrusion (603) is fixedly connected to the outer wall of the driving roller (602), a toothed edge is arranged on the outer wall of the protrusion (603), a connecting plate (604) is fixedly connected to the outer wall of the connecting frame (6), a moving plate (605) is arranged inside the connecting plate (604), a rack is arranged on the outer wall of the moving plate (605), the rack is meshed with the toothed edge, one end of the moving plate (605) is connected to a connecting shaft, one end of the connecting shaft passes through the interior of the valve body (1) and is connected to a sealing baffle (606).

2. A fire damper with high sealing performance according to claim 1, characterized in that: The actuator comprises a drive motor (201) located on one side of the outer wall of the valve body (1); the output end of the drive motor (201) is connected to a drive rod (202); one end of the drive rod (202) is connected to a connecting rod (203) via a central axis; one end of the connecting rod (203) is connected to a connecting member (3) via the central axis; a slot is provided at one end of the connecting member (3) away from the connecting rod (203); a support shaft (4) is provided in the slot; the support shaft (4) passes through the valve body (1) and is connected and fixed to the blade (5).

3. A fire damper with high sealing performance according to claim 1, characterized in that: A plurality of ejector pins (502) are fixedly connected to both sides of the outer wall of the blade (5), and a receiving cavity (7) is fixedly connected to both sides of the inner wall of the valve body (1), and the interior of the receiving cavity (7) is filled with high temperature resistant sealant.

4. A fire damper with high sealing performance according to claim 3, characterized in that: The contact surface between the accommodating cavity (7) and the blade (5) is L-shaped.

5. The fire damper with high sealing performance according to claim 1, characterized in that: Sealing grooves (701) are symmetrically provided on both sides of the inner wall of the valve body (1), and sealing gaskets (702) matching the sealing grooves (701) are fixedly connected on both sides of the outer wall of the blade (5).

6. A fire damper with high sealing performance according to claim 2, characterized in that: A protective cover (8) is sleeved on the outside of the contact point between the connecting member (3) and the supporting shaft (4), and the protective cover (8) is fixedly connected to the outer wall of the supporting plate (2).

Images