Fireproof valve applied to fire-fighting smoke exhaust pipeline

Abstract

The utility model relates to a fireproof valve applied to a fire-fighting smoke exhaust pipeline. Comprising a fireproof valve body, blades used for sealing the fireproof valve body, a rotating device used for driving the blades to be opened and closed, a sealing device used for sealing the blades and a fixing piece used for fixing the sealing device. The blade is arranged in the fireproof valve body; the rotating device is arranged at the top end of the fireproof valve body; the rotating device is in transmission connection with the blades; sealing devices are arranged at the two ends of the fireproof valve body; the fixing piece is connected to the sealing device and the fireproof valve body; rectangular openings are formed in the positions, corresponding to the blades, of the two ends of the fireproof valve body. The fireproof valve solves the problems that in the prior art, due to the fact that the fireproof valve applied to the fire-fighting smoke exhaust pipeline is simple in structure, when a fire occurs and blades in the fireproof valve are in a closed state, gaps still exist between the two sides of the blades and a valve body, the sealing performance is poor when the fireproof valve is in the closed state, and the sealing performance is poor. And the practicability of the fireproof valve is influenced.

Description

Technical Field

[0001] The utility model relates to the field of fire dampers, in particular to a fire damper applied to a fire smoke exhaust pipe. Background Art

[0002] Fire resisting damper is a temperature control device of memory alloy, which is usually installed at the place where the air duct passes through the fire wall and the structural deformation joint. The fire damper is composed of valve body, blade, fire damper actuator and 70℃ cone block temperature sensor. It is usually in the open state. When the gas temperature in the pipeline reaches 70℃, it will close automatically. It can meet the requirements of fire resistance stability and fire resistance integrity within a certain period of time, and play the role of fire and smoke isolation.

[0003] The fire damper used in the fire smoke exhaust duct in the existing technical solution has a relatively simple structure. When a fire occurs, when the blades in the fire damper are in a closed state, there will still be a gap between the two sides of the blades and the valve body. This results in poor sealing of the fire damper when it is in a closed state, which in turn affects the practicality of the fire damper. Utility Model Content

[0004] The embodiment of the present application provides a fire damper for use in a fire smoke exhaust duct, thereby solving a technical problem in that the fire damper for use in a fire smoke exhaust duct in the prior art solution has a relatively simple structure. When a fire occurs, when the blades in the fire damper are in a closed state, there is still a gap between the two sides of the blades and the valve body, which results in poor sealing of the fire damper when in a closed state, thereby affecting the practicality of the fire damper.

[0005] The technical solution adopted in the embodiment of the present application is as follows:

[0006] A fire damper used in a fire smoke exhaust duct, comprising a fire damper body, a blade for closing the fire damper body, a rotating device for driving the blade to open and close, a sealing device for sealing the blade, and a fixing member for fixing the sealing device; the blade is arranged in the fire damper body; the rotating device is arranged at the top of the fire damper body; the rotating device is transmission-connected to the blade; the sealing device is arranged at both ends of the fire damper body; the fixing member is connected to the sealing device and the fire damper body; rectangular openings are respectively opened at both ends of the fire damper body at positions corresponding to the blades.

[0007] A further technical solution is: the rotating device includes a transmission chain, a rotating rod rotatably connected to the fire damper body, a first gear arranged on the rotating rod, a first driving device installed at the top of the fire damper body and a second gear for driving the transmission chain to rotate; the transmission chain is arranged around the first gear and the second gear; the blade is arranged on the rotating rod; the second gear is arranged on the output shaft of the first driving device.

[0008] A further technical solution is: the sealing device includes a shell, a limiting slide rail arranged in the inner cavity of the shell, a sealing block for sealing the blade, a guide block for driving the sealing block to move, a slider arranged on the guide block, a rack connected to the guide block, a third gear for driving the guide block to move, and a second driving device installed in the inner cavity of the shell; the fixing part is connected to the shell and the fire damper body; the sealing block is arranged on the guide block; the sealing block is slidably connected in the rectangular opening; the slider is slidably connected to the limiting slide rail; the rack is meshedly connected to the third gear; the third gear is arranged on the output shaft of the second driving device.

[0009] A further technical solution is: the fixing member is preferably a bolt.

[0010] A further technical solution is: the first driving device is preferably a motor.

[0011] A further technical solution is: the second driving device is preferably a motor.

[0012] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0013] 1. Due to the arrangement of the fire damper body, blades, rotating device, sealing device and fixing parts, and because the rotating device is connected to the blades by transmission, the blades can be rotated in the fire damper body through the operation of the rotating device, and the blades in the fire damper body can be rotated to an open state or a closed state. When the blades in the fire damper body rotate to a closed state, the sealing devices at both ends of the fire damper body work, so that the two sets of sealing devices are respectively against the two sides of the blades, and the two sides of the blades and the fire damper body are in a sealed state, so that the sealing effect of the fire damper in the closed state can be better, thereby improving the practicality of the fire damper. Since the sealing device is fixedly installed on both sides of the fire damper body through the fixing parts, it is convenient for the staff to disassemble and install the sealing device, and it is convenient for the staff to disassemble and repair the fire damper.

[0014] 2. Due to the arrangement of the transmission chain, the rotating rod, the first gear, the first driving device and the second gear, when it is necessary to rotate the blades in the fire damper body to an open state or a closed state, the staff drives the second gear to rotate through the output shaft of the first driving device. Since the transmission chain is arranged around the first gear and the second gear, when the second gear rotates, it can drive the transmission chain and the first gear to rotate together. Since the first gear is fixedly connected to the rotating rod and the blades are fixedly connected to the rotating rod, when the first gear rotates, it can drive the blades to rotate together, thereby enabling the blades to rotate to an open state or a closed state.

[0015] 3. Due to the use of the shell, the limit slide rail, the sealing block, the guide block, the slider, the rack, the third gear and the second drive device, when the blades in the fire damper body rotate to a closed state, the third gear is driven to rotate by the output shaft of the second drive device. Since the rack set on the guide block is meshed and connected to the third gear, when the third gear rotates, the guide block will slide along the limit slide rail on the inner cavity of the shell through the slider. During the sliding process, the guide block will move the sealing block to the rectangular opening, and finally make the sealing block firmly against the blade, so that the two sides of the blade and the fire damper body are in a sealed state. The output shaft of the second drive device drives the third gear to rotate in the opposite direction, so that the guide block can slide to the original position with the sealing block. The whole operation process is simple and reliable, which is convenient for the staff to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic diagram of the overall structure of a fire damper used in a fire smoke exhaust pipe in an embodiment of the present invention.

[0017] Figure 2 This is a partial structural diagram of the embodiment of the utility model used to reflect the position relationship between the rectangular opening and the fire damper valve body

[0018] Figure 3 It is a partial structural schematic diagram for reflecting the rotating device in the embodiment of the utility model.

[0019] Figure 4 It is a partial structural schematic diagram for reflecting the sealing device in the embodiment of the utility model.

[0020] Figure 5 It is a partial structural diagram for reflecting the connection relationship between the third gear and the rack in the embodiment of the utility model.

[0021] In the figure: 1. fire damper body; 11. rectangular opening; 2. blade; 3. rotating device; 31. transmission chain; 32. rotating rod; 33. first gear; 34. first driving device; 35. second gear; 4. sealing device; 41. shell; 42. limit slide rail; 43. sealing block; 44. guide block; 45. slider; 46. rack; 47. third gear; 48. second driving device; 5. fixing part. DETAILED DESCRIPTION

[0022] The embodiment of the present application provides a fire damper for use in a fire smoke exhaust duct, thereby solving a technical problem in that the fire damper for use in a fire smoke exhaust duct in the prior art solution has a relatively simple structure. When a fire occurs, when the blades in the fire damper are in a closed state, there is still a gap between the two sides of the blades and the valve body, which results in poor sealing of the fire damper when in a closed state, thereby affecting the practicality of the fire damper.

[0023] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows:

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] A fire damper used in a fire smoke exhaust pipe, such as Figure 1 and Figure 2 As shown, it includes a fire damper body 1, a blade 2 for closing the fire damper body 1, a rotating device 3 for driving the blade 2 to open and close, a sealing device 4 for sealing the blade 2, and a fixing member 5 for fixing the sealing device 4. The blade 2 is arranged in the fire damper body 1. The rotating device 3 is arranged at the top of the fire damper body 1. The rotating device 3 is connected to the blade 2 in a transmission manner. The sealing device 4 is arranged at both ends of the fire damper body 1. The fixing member 5 is connected to the sealing device 4 and the fire damper body 1. Rectangular openings 11 are respectively opened at the positions corresponding to the blade 2 at both ends of the fire damper body 1.

[0026] The blade 2 is located in the fire damper body 1. The rotating device 3 is fixedly installed at the top of the fire damper body 1. The rotating device 3 is transmission-connected to the blade 2, so when the rotating device 3 is running, it can drive the blade 2 to rotate in the fire damper body 1. The fixing member 5 is preferably a bolt. Both ends of the two sets of sealing devices 4 are fixedly connected to the fire damper body 1 through a plurality of sets of fixing members 5 arranged in a linear array.

[0027] Due to the arrangement of the fire damper body 1, the blade 2, the rotating device 3, the sealing device 4 and the fixing member 5, since the rotating device 3 is connected to the blade 2 by transmission, the blade 2 can be rotated in the fire damper body 1 through the operation of the rotating device 3, and then the blade 2 in the fire damper body 1 can be rotated to an open state or a closed state. When the blade 2 in the fire damper body 1 rotates to a closed state, the sealing devices 4 at both ends of the fire damper body 1 work, so that the two groups of sealing devices 4 are respectively against the two sides of the blade 2, and at this time, the two sides of the blade 2 and the fire damper body 1 are in a sealed state, so that the sealing effect of the fire damper in the closed state can be better, thereby improving the practicality of the fire damper. Since the sealing device 4 is fixedly installed on both sides of the fire damper body 1 through the fixing member 5, it is convenient for the staff to disassemble and install the sealing device 4, and then it is convenient for the staff to disassemble and repair the fire damper.

[0028] like Figure 3 As shown, the rotating device 3 includes a transmission chain 31, a rotating rod 32 rotatably connected to the fire damper body 1, a first gear 33 arranged on the rotating rod 32, a first driving device 34 installed on the top of the fire damper body 1, and a second gear 35 for driving the transmission chain 31 to rotate. The transmission chain 31 is arranged around the first gear 33 and the second gear 35. The blade 2 is arranged on the rotating rod 32. The second gear 35 is arranged on the output shaft of the first driving device 34.

[0029] The first gear 33 is fixedly connected to the top of the rotating rod 32. The first driving device 34 is preferably a motor. The first driving device 34 is detachably fixedly mounted on the top of the fire damper valve body 1 by bolts. The blade 2 is fixedly connected to the rotating rod 32. The second gear 35 is fixedly connected to the output shaft of the first driving device 34.

[0030] Due to the arrangement of the transmission chain 31, the rotating rod 32, the first gear 33, the first driving device 34 and the second gear 35, when it is necessary to rotate the blade 2 in the fire damper body 1 to an open state or a closed state, the staff drives the second gear 35 to rotate through the output shaft of the first driving device 34. Since the transmission chain 31 is arranged around the first gear 33 and the second gear 35, when the second gear 35 rotates, it can drive the transmission chain 31 and the first gear 33 to rotate together. Since the first gear 33 is fixedly connected to the rotating rod 32 and the blade 2 is fixedly connected to the rotating rod 32, when the first gear 33 rotates, it can drive the blade 2 to rotate together, so that the blade 2 can be rotated to an open state or a closed state.

[0031] like Figure 4 and Figure 5As shown, the sealing device 4 includes a housing 41, a limiting slide rail 42 arranged in the inner cavity of the housing 41, a sealing block 43 for sealing the blade 2, a guide block 44 for driving the sealing block 43 to move, a slider 45 arranged on the guide block 44, a rack 46 connected to the guide block 44, a third gear 47 for driving the guide block 44 to move, and a second driving device 48 installed in the inner cavity of the housing 41. The fixing member 5 is connected to the housing 41 and the fire damper body 1. The sealing block 43 is arranged on the guide block 44. The sealing block 43 is slidably connected in the rectangular opening 11. The slider 45 is slidably connected to the limiting slide rail 42. The rack 46 is meshingly connected to the third gear 47. The third gear 47 is arranged on the output shaft of the second driving device 48.

[0032] The inner cavity of the shell 41 is fixedly connected to the limiting slide rails 42 symmetrically arranged with the guide block 44 on both sides. The guide block 44 is fixedly connected to the sliders 45 symmetrically arranged with the guide block 44 on both sides. Two groups of sliders 45 are slidably connected to the corresponding limiting slide rails 42. The rack 46 is fixedly connected to the top of the guide block 44. The second drive device 48 is fixedly installed on the top of the inner cavity of the shell 41. Both ends of the shell 41 are fixedly connected to the fire damper body 1 through a plurality of groups of fixing parts 5 arranged in a linear array. The sealing block 43 is fixedly connected to the guide block 44. The size of the sealing block 43 is adapted to the caliber of the rectangular opening 11. The second drive device 48 is preferably a motor. The third gear 47 is fixedly connected to the output shaft of the second drive device 48.

[0033] Due to the use of the housing 41, the limiting slide rail 42, the sealing block 43, the guide block 44, the slider 45, the rack 46, the third gear 47 and the second drive device 48, when the blade 2 in the fire damper body 1 rotates to a closed state, the output shaft of the second drive device 48 drives the third gear 47 to rotate. Since the rack 46 arranged on the guide block 44 is meshed and connected to the third gear 47, when the third gear 47 rotates, the guide block 44 will slide along the limiting slide rail 42 on the inner cavity of the housing 41 through the slider 45. During the sliding process, the guide block 44 will move to the rectangular opening 11 with the sealing block 43, and finally the sealing block 43 will be firmly against the blade 2, so that the two sides of the blade 2 and the fire damper body 1 are in a sealed state. The output shaft of the second drive device 48 drives the third gear 47 to rotate in the opposite direction, so that the guide block 44 can slide to the original position with the sealing block 43, and the whole operation process is simple and reliable, which is convenient for the staff to operate.

[0034] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fire damper used in a fire smoke exhaust pipe, characterized in that , comprising a fire damper body (1), a blade (2) for closing the fire damper body (1), a rotating device (3) for driving the blade (2) to open and close, a sealing device (4) for sealing the blade (2), and a fixing member (5) for fixing the sealing device (4); the blade (2) is arranged in the fire damper body (1); the rotating device (3) is arranged at the top of the fire damper body (1); the rotating device (3) is drivingly connected to the blade (2); the sealing device (4) is arranged at both ends of the fire damper body (1); the fixing member (5) is connected to the sealing device (4) and the fire damper body (1); rectangular openings (11) are respectively opened at positions at both ends of the fire damper body (1) corresponding to the blade (2); The sealing device (4) comprises a shell (41), a limiting slide rail (42) arranged in the inner cavity of the shell (41), a sealing block (43) for sealing the blade (2), a guide block (44) for driving the sealing block (43) to move, a slider (45) arranged on the guide block (44), a rack (46) connected to the guide block (44), a third gear (47) for driving the guide block (44) to move, and a second driving device (48) installed in the inner cavity of the shell (41); the fixing member (5) is connected to the shell (41) and the fire damper body (1); the sealing block (43) is arranged on the guide block (44); the sealing block (43) is slidably connected in the rectangular opening (11); the slider (45) is slidably connected to the limiting slide rail (42); the rack (46) is meshingly connected to the third gear (47); and the third gear (47) is arranged on the output shaft of the second driving device (48).

2. A fire damper for fire smoke exhaust pipe according to claim 1, characterized in that: The rotating device (3) comprises a transmission chain (31), a rotating rod (32) rotatably connected to the fire damper body (1), a first gear (33) arranged on the rotating rod (32), a first driving device (34) installed at the top of the fire damper body (1), and a second gear (35) for driving the transmission chain (31) to rotate; the transmission chain (31) is arranged around the first gear (33) and the second gear (35); the blade (2) is arranged on the rotating rod (32); and the second gear (35) is arranged on the output shaft of the first driving device (34).

3. The fire damper used in a fire smoke exhaust pipe according to claim 1, characterized in that: The fixing member (5) is a bolt.

4. A fire damper for fire smoke exhaust pipe according to claim 2, characterized in that: The first driving device (34) is a motor.

5. The fire damper used in a fire smoke exhaust pipe according to claim 1, characterized in that: The second driving device (48) is a motor.

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