Blade fastening type smoke exhaust fireproof valve

Abstract

The utility model discloses a blade fastening type smoke exhaust fireproof valve, and relates to the technical field of smoke exhaust fireproof valves. The fireproof valve comprises a fireproof valve shell, blades are arranged in the fireproof valve shell, a round hole is formed in the center of each blade, a rotating shaft is inserted into the inner wall of each round hole, a limiting protruding block is fixedly connected to the outer surface of each rotating shaft, the outer surface of each limiting protruding block is inserted into the inner wall of each blade, and a disassembling assembly is arranged at the bottom of the fireproof valve shell. The top of the fireproof valve shell is fixedly connected with a top shell. By arranging the dismounting assembly, a worker uses a wrench to anticlockwise rotate the nut to dismount the nut, the bottom plate is unfixed and then is pulled downwards to be separated from the fixing block to complete dismounting, the bottom of the shell of the fireproof valve is opened, then the blades are pulled downwards, dismounting can be achieved, and a connected pipeline does not need to be dismounted; operation steps are reduced, labor force is reduced, and the situation that the pipeline is damaged when disassembled is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of smoke exhaust fire dampers, in particular to a blade-fastening type smoke exhaust fire damper. Background Art

[0002] The blade-locking smoke and fire damper is a fire protection device designed to improve the impact resistance and sealing performance of smoke exhaust systems. This device uses a controller to control the movement of the moving components, which lock the second and first inverted structures together, thereby connecting the second and first rotating blades into a single unit. This design provides excellent impact resistance, increases its service life, and fully ensures the sealing between the blades, meeting the required smoke leakage rate.

[0003] Existing blade-fastening smoke exhaust fire dampers are usually connected to pipes at the front and back positions. When the internal blades are damaged, multiple pipes need to be disassembled to replace the blades inside the fire damper. This method not only increases the operation steps, the process is cumbersome and inefficient, but also the disassembly of the pipes is extremely inconvenient and easily damages the pipes. Therefore, we propose a blade-fastening smoke exhaust fire damper. Utility Model Content

[0004] The purpose of the present utility model is to provide a blade-fastening type smoke exhaust fire damper, which is provided with a disassembly component. Specifically, the staff uses a wrench to rotate the nut counterclockwise to disassemble it, so that the bottom plate is released, and then the bottom plate is pulled downward to separate from the fixing block to complete the disassembly. The bottom of the fire damper shell is opened, and then the blades can be pulled downward to disassemble it. There is no need to disassemble the connected pipes, which reduces the operation steps and labor, and avoids the situation where the pipes are damaged by disassembling. It solves the problem that when the blades of the existing blade-fastening type smoke exhaust fire damper are damaged, it is necessary to disassemble multiple pipes to replace the blades inside the fire damper. This method not only increases the operation steps, the process is cumbersome and inefficient, but also the disassembly of the pipes is extremely inconvenient and easy to cause damage to the pipes.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a blade-fastening type smoke exhaust fire damper, comprising a fire damper housing, a blade is arranged inside the fire damper housing, a circular hole is opened at the center of the blade, a rotating shaft is inserted into the inner wall of the circular hole, the outer surface of the rotating shaft is fixedly connected to a limiting protrusion, the outer surface of the limiting protrusion is inserted into the inner wall of the blade, a disassembly component is provided at the bottom of the fire damper housing, the top of the fire damper housing is fixedly connected to a top shell, the top of the top shell is fixedly connected to a baffle shell, the disassembly component comprises a bottom plate, the top of the bottom plate is in contact with the bottom of the fire damper housing, the left and right sides of the fire damper housing are fixedly connected to fixing blocks, and a slot is opened inside the fixing block;

[0007] Two plug-in blocks are fixedly connected to the top of the base plate, and two threaded blocks are fixedly connected to the top of the plug-in blocks. Nuts are threaded on the outer surfaces of the two threaded blocks. Elastic card blocks are inserted into the front and back of the fixed block, and the bottom of the elastic card block is fixedly connected to the top of the base plate.

[0008] Furthermore, the insert block is plugged into the slot, a protrusion is provided on the side of the elastic card block close to the fixed block, the bottom of the fixed block contacts the top of the base plate, the bottom of the nut contacts the top of the fixed block, and the height of the insert block is lower than the height of the inner wall of the slot.

[0009] Furthermore, a rack is provided inside the top shell, the front side of the rack is meshed with a gear, the bottom of the rack is slidably connected to a slide rail, the bottom of the slide rail is fixedly connected to the top of the fire damper shell, the top of the rotating shaft passes through the fire damper shell and extends to the inside of the top shell, and the top of the rotating shaft is fixedly connected to the bottom of the gear.

[0010] Furthermore, a support block is provided inside the stop shell, the bottom of the support block is fixedly connected to the top of the top shell, the right side of the support block is fixedly connected to an electric push rod, the left output end of the electric push rod is fixedly connected to a push block, a slide groove is provided on the top of the top shell, the inner wall of the slide groove is in contact with the outer surface of the push block, and the bottom of the push block is fixedly connected to the top of the rack.

[0011] Furthermore, a socket is opened at the center of the bottom plate, the socket is plugged into the bottom of the rotating shaft, the bottom of the blade contacts the top of the bottom plate, and the top of the blade contacts the top of the inner wall of the fire damper housing.

[0012] Furthermore, a sealing seat is fixedly connected to the left and right sides of the inner wall of the fire damper housing, a sealing strip is slidably connected to the inside of the sealing seat, the side of the sealing strip close to the blade is in contact with the blade surface, and the side of the sealing strip away from the blade is fixedly connected to several sliding rods, and the sides of the several sliding rods away from the sealing strip are fixedly connected to springs, and the sides of the springs away from the sliding rods are fixedly connected to the inner wall of the sealing seat.

[0013] Furthermore, the plurality of sliding rods are arranged in a vertical array, the sealing strip on the sealing seat on the left is arranged to face backward, and the sealing strip above the sealing seat on the right is arranged to face forward.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model is provided with a disassembly component. Specifically, the staff uses a wrench to rotate the nut counterclockwise to disassemble it, so that the bottom plate is released, and then the bottom plate is pulled downward to separate from the fixing block to complete the disassembly. The bottom of the fire damper shell is opened, and then the blade is pulled downward to disassemble it. There is no need to disassemble the connected pipes, which reduces the operation steps and labor, and avoids the situation where the pipes are damaged by disassembly.

[0016] 2. The utility model sets a sealing seat. Specifically, when the blade seals the fire damper housing, when the blade approaches the sealing seat, it will contact the sealing strip and push the sealing strip to squeeze the spring through continuous rotation. Then, when the electric push rod stops, the blade stops, and the sealing strip is tightly attached to the blade under the action of the spring elasticity, thereby improving the sealing effect of the blade, reducing the occurrence of gaps, and better preventing smoke leakage.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

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

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

[0021] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure of A in the middle;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the top of the fire damper housing of the utility model;

[0023] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure of B;

[0024] Figure 6This is a schematic diagram of the top structure of the bottom plate of the utility model;

[0025] Figure 7 This is a schematic diagram of the bottom structure of the blade of the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 1. Fire damper housing; 11. Blade; 111. Rotating shaft; 112. Limiting protrusion; 12. Disassembly assembly; 121. Bottom plate; 211. Socket; 122. Fixing block; 221. Slot; 123. Insert block; 124. Threaded block; 125. Nut; 126. Elastic block; 13. Top shell; 131. Stop shell; 311. Support block; 312. Electric push rod; 313. Push block; 132. Rack; 133. Gear; 134. Slide rail; 14. Sealing seat; 141. Sealing strip; 142. Slide rod; 143. Spring. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-7 As shown, the utility model is a blade-fastening smoke exhaust fire damper, comprising a fire damper housing 1, a blade 11 is provided inside the fire damper housing 1, a circular hole is provided at the center of the blade 11, a rotating shaft 111 is inserted into the inner wall of the circular hole, the outer surface of the rotating shaft 111 is fixedly connected to a limiting protrusion 112, the outer surface of the limiting protrusion 112 is inserted into the inner wall of the blade 11, a disassembly component 12 is provided at the bottom of the fire damper housing 1, a top shell 13 is fixedly connected to the top of the fire damper housing 1, a baffle shell 131 is fixedly connected to the top of the top shell 13, the disassembly component 12 includes a bottom plate 121, the top of the bottom plate 121 is in contact with the bottom of the fire damper housing 1, a fixing block 122 is fixedly connected to the left and right sides of the fire damper housing 1, and a slot 221 is provided inside the fixing block 122;

[0030] Two plug-in blocks 123 are fixedly connected to the top of the base plate 121, and two threaded blocks 124 are fixedly connected to the top of the plug-in block 123. The outer surfaces of the two threaded blocks 124 are threadedly connected with nuts 125. The front and back of the fixing block 122 are plugged with elastic blocks 126. The bottom of the elastic block 126 is fixedly connected to the top of the base plate 121. By setting up a disassembly component 12, specifically, the staff uses a wrench to rotate the nut 125 counterclockwise to disassemble it, then the base plate 121 is released, and then the base plate 121 is pulled downward to separate from the fixing block 122 to complete the disassembly, then the bottom of the fire damper housing 1 is opened, and then the blade 11 can be pulled downward to disassemble it. There is no need to disassemble the connected pipes, which reduces the operation steps and labor, and avoids the situation where the pipes are damaged by disassembly.

[0031] The insert block 123 is plugged into the slot 221, and a protrusion is provided on the side of the elastic block 126 close to the fixed block 122. The bottom of the fixed block 122 contacts the top of the base plate 121, and the bottom of the nut 125 contacts the top of the fixed block 122. The height of the insert block 123 is lower than the height of the inner wall of the slot 221. When the protrusion on the elastic block 126 moves to the top of the fixed block 122, it is reset under the action of elasticity, thereby supporting the base plate 121. No support is required from the staff, which makes it convenient for the staff to install the nut 125.

[0032] A rack 132 is provided inside the top shell 13, and the front of the rack 132 is meshed with a gear 133. The bottom of the rack 132 is slidably connected to a slide rail 134. The bottom of the slide rail 134 is fixedly connected to the top of the fire damper housing 1. The top of the rotating shaft 111 passes through the fire damper housing 1 and extends to the inside of the top shell 13. The top of the rotating shaft 111 is fixedly connected to the bottom of the gear 133. The rack 132 slides on the slide rail 134 when moving, making the rack 132 more stable when moving. The rack 132 drives the rotating shaft 111 to rotate through the gear 133, and the rotating shaft 111 drives the blade 11 to rotate through the limiting protrusion 112.

[0033] A support block 311 is provided inside the stop shell 131, and the bottom of the support block 311 is fixedly connected to the top of the top shell 13, and an electric push rod 312 is fixedly connected to the right side of the support block 311, and a push block 313 is fixedly connected to the left output end of the electric push rod 312. A sliding groove is provided on the top of the top shell 13, and the inner wall of the sliding groove contacts the outer surface of the push block 313. The bottom of the push block 313 is fixedly connected to the top of the rack 132. By providing the sliding groove, the push block 313 is conveniently connected to the rack 132, thereby smoothly driving the rack 132 to move.

[0034] A socket 211 is provided at the center of the bottom plate 121, which is plugged into the bottom of the rotating shaft 111. The bottom of the blade 11 contacts the top of the bottom plate 121, and the top of the blade 11 contacts the top of the inner wall of the fire damper housing 1. When the bottom plate 121 is installed, the bottom of the rotating shaft 111 will be inserted into the socket 211, which not only enables smooth installation but also does not affect the rotation of the rotating shaft 111.

[0035] The left and right sides of the inner wall of the fire damper housing 1 are fixedly connected to a sealing seat 14, and a sealing strip 141 is slidably connected to the inside of the sealing seat 14. The side of the sealing strip 141 close to the blade 11 contacts the surface of the blade 11, and the side of the sealing strip 141 away from the blade 11 is fixedly connected to several sliding rods 142. The side of the several sliding rods 142 away from the sealing strip 141 is fixedly connected to a spring 143. The side of the spring 143 away from the sliding rod 142 is fixedly connected to the inner wall of the sealing seat 14. By setting the sealing seat 14, specifically, when the blade 11 seals the fire damper housing 1, when the blade 11 approaches the sealing seat 14, it will contact the sealing strip 141 and push the spring 143 through continuous rotation. Then, the electric push rod 312 stops and the blade 11 stops. The sealing strip 141 is tightly attached to the blade 11 under the elastic action of the spring 143, thereby improving the sealing effect of the blade 11 and reducing the occurrence of gaps, thereby better preventing smoke leakage.

[0036] Several sliding rods 142 are arranged in a vertical array, the sealing strip 141 on the sealing seat 14 on the left is set to face backward, and the sealing strip 141 above the sealing seat 14 on the right is set to face forward. By arranging in the above manner, both the left and right sides of the blade 11 can be sealed without affecting the flipping and opening of the blade 11.

[0037] A specific application of this embodiment is:

[0038] Start the electric push rod 312 to drive the push block 313 to move to the right, then the push block 313 drives the rack 132 to move to the right together, and the rack 132 slides on the slide rail 134, making the rack 132 more stable when moving. At the same time, the rack 132 drives the gear 133 to rotate clockwise, and the gear 133 drives the shaft 111 to rotate together. The shaft 111 drives the blade 11 to rotate through the limiting protrusion 112, and the blade 11 is away from the sealing seat 14, opening the fire damper housing 1 to exhaust smoke. When the fire damper housing 1 needs to be sealed, start the electric push rod 312 to drive the push block 313 to move in the opposite direction. , the rack 132 drives the gear 133 to rotate counterclockwise, causing the blade 11 to rotate in the opposite direction. When the blade 11 approaches the sealing seat 14, it will contact the sealing strip 141 and push the sealing strip 141 through continuous rotation. The sealing strip 141 will drive the slide bar 142 to slide in the sealing seat 14 and squeeze the spring 143. Then the electric push rod 312 stops and the blade 11 stops. The sealing strip 141 is tightly attached to the blade 11 under the elastic action of the spring 143, thereby improving the sealing effect of the blade 11 and reducing the occurrence of gaps, thereby better preventing smoke leakage. When the blade 11 When the fire damper is damaged and needs to be replaced, the staff uses a wrench to turn the nut 125 counterclockwise to disassemble it, so that the bottom plate 121 is released, and then the bottom plate 121 is pulled downward. Since the elastic block 126 is elastic, the bottom plate 121 can drive the plug 123 to disengage smoothly to complete the disassembly. The bottom of the fire damper housing 1 is opened, and then the blade 11 can be pulled downward to disassemble it. There is no need to disassemble the connected pipe, which reduces the operation steps and labor, and avoids the situation where the pipe is damaged by disassembly. Finally, the new blade 11 is inserted into the rotating shaft 111, and the limiting protrusion 112 is on the blade 1 1 plays a positioning role. After the blade 11 is inserted, the bottom plate 121 is inserted from the bottom of the fire damper housing 1, and the insert block 123 is plugged into the slot 221 on the fixing block 122. At the same time, the elastic block 126 will be pushed after contacting the fixing block 122. When the top of the bottom plate 121 contacts the bottom of the fire damper housing 1, the protrusion on the elastic block 126 moves to the top of the fixing block 122 and is reset under the action of elasticity, thereby supporting the bottom plate 121. No support is required from the staff, which makes it convenient for the staff to install the nut 125. After the nut 125 is installed, the bottom plate 121 can be fixed.

[0039] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0040] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A blade-fastening smoke exhaust fire damper, comprising a fire damper housing (1), a blade (11) disposed inside the fire damper housing (1), a circular hole being provided at the center of the blade (11), a rotating shaft (111) being inserted into the inner wall of the circular hole, and a limiting protrusion (112) being fixedly connected to the outer surface of the rotating shaft (111), characterized in that: The outer surface of the limiting protrusion (112) is plugged into the inner wall of the blade (11); a disassembly assembly (12) is provided at the bottom of the fire damper housing (1); a top shell (13) is fixedly connected to the top of the fire damper housing (1); a retaining shell (131) is fixedly connected to the top of the top shell (13); the disassembly assembly (12) includes a bottom plate (121); the top of the bottom plate (121) contacts the bottom of the fire damper housing (1); a fixed block (122) is fixedly connected to the left and right sides of the fire damper housing (1); a slot (221) is provided inside the fixed block (122); Two plug-in blocks (123) are fixedly connected to the top of the bottom plate (121), two threaded blocks (124) are fixedly connected to the top of the plug-in blocks (123), and nuts (125) are threadedly connected to the outer surfaces of the two threaded blocks (124). Elastic clamping blocks (126) are inserted into the front and back of the fixed block (122), and the bottom of the elastic clamping block (126) is fixedly connected to the top of the bottom plate (121).

2. A blade-fastening smoke exhaust fire damper according to claim 1, characterized in that: The insert block (123) is plugged into the slot (221); a protrusion is provided on one side of the elastic block (126) close to the fixed block (122); the bottom of the fixed block (122) contacts the top of the base plate (121); the bottom of the nut (125) contacts the top of the fixed block (122); and the height of the insert block (123) is lower than the height of the inner wall of the slot (221).

3. The blade-fastening smoke exhaust fire damper according to claim 2, characterized in that: A rack (132) is provided inside the top shell (13), the front of the rack (132) is meshedly connected to a gear (133), the bottom of the rack (132) is slidably connected to a slide rail (134), the bottom of the slide rail (134) is fixedly connected to the top of the fire damper housing (1), the top of the rotating shaft (111) passes through the fire damper housing (1) and extends to the inside of the top shell (13), and the top of the rotating shaft (111) is fixedly connected to the bottom of the gear (133).

4. The blade-fastening smoke exhaust fire damper according to claim 3, characterized in that: A support block (311) is provided inside the stop shell (131), the bottom of the support block (311) is fixedly connected to the top of the top shell (13), the right side of the support block (311) is fixedly connected to an electric push rod (312), the left output end of the electric push rod (312) is fixedly connected to a push block (313), a slide groove is provided on the top of the top shell (13), the inner wall of the slide groove contacts the outer surface of the push block (313), and the bottom of the push block (313) is fixedly connected to the top of the rack (132).

5. The blade-fastening smoke exhaust fire damper according to claim 4, characterized in that: A socket (211) is provided at the center of the bottom plate (121), the socket (211) is plugged into the bottom of the rotating shaft (111), the bottom of the blade (11) contacts the top of the bottom plate (121), and the top of the blade (11) contacts the top of the inner wall of the fire damper housing (1).

6. The blade-fastening smoke exhaust fire damper according to claim 4, characterized in that: The left and right sides of the inner wall of the fire damper housing (1) are fixedly connected to a sealing seat (14); a sealing strip (141) is slidably connected inside the sealing seat (14); a side of the sealing strip (141) close to the blade (11) contacts the surface of the blade (11); a side of the sealing strip (141) away from the blade (11) is fixedly connected to a plurality of sliding rods (142); a side of the plurality of sliding rods (142) away from the sealing strip (141) is fixedly connected to a spring (143); a side of the spring (143) away from the sliding rod (142) is fixedly connected to the inner wall of the sealing seat (14).

7. The blade-fastening smoke exhaust fire damper according to claim 6, characterized in that: The plurality of sliding rods (142) are arranged in a vertical array, the sealing strip (141) on the left sealing seat (14) is arranged rearward, and the sealing strip (141) above the right sealing seat (14) is arranged forward.

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