Fire damper leaf fixing block

Abstract

The utility model relates to fire damper technical field, and disclose the fixed pressure block of fire damper blade of firm connection, including valve body, the air rectangular hole of passing through valve body from front to back, still include having the baffle in air rectangular hole, the baffle includes the bending groove one of reinforcing baffle, the upper pivot, lower pivot are inlayed in bending groove one place, and the side away from upper pivot, lower pivot of baffle is equipped with the pressure block, and the side of baffle of pressure block is equipped with the avoiding mouth of avoiding bending groove one, and the side away from baffle of pressure block is equipped with bolt, and bolt can pass through pressure block, baffle and upper pivot or lower pivot connection. Through the cooperation of upper pivot or lower pivot and pressure block, the baffle is clamped, and the firmness of baffle connection is increased, and upper pivot and lower pivot can tightly and firmly connect the baffle, avoid the loosing of connecting point caused by the frequent rotation of baffle, and the baffle is three millimeter thickness plate stamping forming.

Description

Technical Field

[0001] This utility model relates to the field of fire damper technology, and in particular to a fire damper blade fixing block with a secure connection. Background Technology

[0002] Fire dampers are fire-fighting devices used in ventilation, air conditioning, and smoke extraction systems. Their main function is to automatically close in the event of a fire, preventing the spread of fire and smoke through ducts, thereby protecting people's lives and property. As an important component of modern building fire protection systems, fire dampers play a crucial role in blocking fire and smoke during a fire through their unique working principles and diverse types. The proper installation and maintenance of fire dampers are important measures to ensure building safety.

[0003] Currently, there are two main methods for fixing the shaft of fire dampers on the market: The first method is welding: This involves manual installation and adjustment of the installation position, followed by welding to fix it to the (blades). This method requires manual adjustment of the installation position, uses 1.5-2.0mm galvanized steel sheets, which are thin and require advanced welding techniques. After welding, the zinc layer of the galvanized steel sheet is damaged, causing rust at the weld and shortening the service life of the fire damper. The second method is using a butterfly pressure plate: This also involves manual installation and adjustment of the installation position. The butterfly pressure plate, in conjunction with the blades, presses the shaft to secure it. However, the butterfly pressure plate is prone to deformation and its compression fixation is not reliable, causing the shaft to move. After the fire damper blades open and close several times, this movement creates gaps between the blades, resulting in air leakage and affecting the sealing effect. Utility Model Content

[0004] In order to overcome the problems of fire valves made of galvanized sheet welding that are prone to rusting due to damage to the galvanized layer, and the blades made by pressing with butterfly plates that are prone to deformation and have poor durability.

[0005] The technical solution of this utility model is as follows: a fire damper blade fixing block with a secure connection includes a valve body, a venting rectangular hole passing through the valve body from front to back, and a rotating baffle plate provided in the venting rectangular hole. The baffle plate includes a first bending groove for reinforcing the baffle plate, and second bending grooves are provided on the left and right sides of the first bending groove. An upper rotating shaft and a lower rotating shaft are embedded in the first bending groove. A clamping block is installed on the side of the baffle plate away from the upper rotating shaft and the lower rotating shaft. The side of the clamping block that is in contact with the baffle plate is provided with a clearance opening to avoid the first bending groove. A bolt is provided on the side of the clamping block away from the baffle plate. The bolt can pass through the clamping block and the baffle plate and engage with the upper rotating shaft or the lower rotating shaft. The upper rotating shaft can protrude from the top surface of the baffle plate, and the lower rotating shaft can protrude from the bottom surface of the baffle plate.

[0006] Preferably, there are two baffles rotatably connected inside the vent rectangular hole. The two baffles are distributed left and right. The upper rotating shaft on one baffle is a long rotating shaft, and the upper rotating shaft on the other baffle is a short rotating shaft. The two baffles are connected to a linkage component. Rotating the long rotating shaft can drive the short rotating shaft to rotate together.

[0007] Preferably, the linkage assembly includes a connecting bracket and a connecting rod connected to the rear side of the baffle, wherein one end of the connecting rod is rotatably connected to the connecting bracket of the left baffle, and the other end of the connecting rod is rotatably connected to the connecting bracket of the right baffle.

[0008] Preferably, arched plates are provided above and below the baffle, and the side of the arched plate away from the baffle can fit against the wall of the vent rectangular hole. A hemisphere is provided at the bottom of the lower rotating shaft, and the lower rotating shaft can pass through the arched plate below the baffle so that the hemisphere is tangent to the wall of the vent rectangular hole. The long rotating shaft and the short rotating shaft can pass through the arched plate above the baffle, and the long rotating shaft can extend upward through the valve body.

[0009] Preferably, the arched plate is provided with corner stops on the left and right sides respectively. The corner stops include plate one and plate two. Plate one can fit against the wall of the ventilation rectangular hole. Plate two of the left corner stop can fit against the front side of the left baffle, and plate two of the right corner stop can fit against the rear side of the right baffle.

[0010] Preferably, the connecting bracket includes a fourth plate that fits against the back of the baffle and a third plate that fits against the bottom of the connecting rod. The top of the third plate has a through rotating hole, and the back of the fourth plate has a through elongated hole. The top of the connecting rod can be inserted into the rotating hole, and a screw can be installed in the elongated hole to connect with the baffle.

[0011] As a preferred embodiment, two clearance positions, namely clearance position two and clearance position one, are provided on plate four and plate three to avoid the upper rotating shaft.

[0012] The beneficial effects of this utility model are as follows: the baffle is clamped by the cooperation of the upper or lower rotating shaft and the clamping block, which increases the firmness of the connection of the baffle. At the same time, the upper and lower rotating shafts can firmly connect the baffle, avoiding the loosening of the connection point caused by the frequent rotation and opening of the baffle. The baffle is made of a 3 mm thick plate and can be tightly fitted with the upper and lower rotating shafts. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention in its closed state;

[0014] Figure 2 This is a schematic diagram of the clamping block structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the baffle structure of this utility model;

[0016] Figure 4This is a schematic diagram of the connecting rod structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the connecting bracket structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the baffle plate in the open state of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Valve body; 10. Rectangular vent hole; 21. Connecting rod; 22. Connecting bracket; 221. Plate three; 2211. Clearance position one; 2212. Rotating hole; 222. Plate four; 2221. Clearance position two; 2222. Long slot hole; 231. Long rotating shaft; 232. Short rotating shaft; 233. Lower rotating shaft; 2331. Hemisphere; 32. Angle stop; 321. Plate one; 322. Plate two; 4. Baffle plate; 41. Bending groove one; 42. Bending groove two; 5. Clamping block; 51. Clearance opening; 52. Bolt; 6. Arched plate. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1 - Figure 5This utility model provides an embodiment: a securely connected fire damper blade fixing block includes a valve body 1, a venting rectangular hole 10 passing through the valve body 1 from front to back, and a rotating baffle 4 disposed within the venting rectangular hole 10. The baffle 4 includes a reinforcing bending groove 41, and bending grooves 42 on the left and right sides of the bending groove 41 respectively. An upper rotating shaft and a lower rotating shaft 233 are embedded in the bending groove 41. A clamping block 5 is installed on the side of the baffle 4 away from the upper and lower rotating shafts 233. The side of the clamping block 5 that is in contact with the baffle 4 has a clearance opening 51 to avoid the bending groove 41. A bolt 52 is disposed on the side of the clamping block 5 away from the baffle 4. The bolt 52 can pass through the clamping block 5 and the baffle 4 and engage with the upper or lower rotating shaft 233. The upper shaft 233 protrudes from the top surface of the baffle 4, and the lower shaft 233 protrudes from the bottom surface of the baffle 4. Through the cooperation of the upper or lower shaft 233 with the clamping block 5, the baffle 4 is clamped, increasing the firmness of the connection and reducing the risk of rust due to damage to the galvanized layer caused by welding. Simultaneously, the upper and lower shafts 233 firmly connect the baffle 4, preventing loosening of the connection point due to frequent rotation and opening. The baffle 4 is made of a 3mm thick sheet metal, stamped and formed, allowing for a tight fit and secure fixation with the upper and lower shafts 233. Two baffles 4 are rotatably connected within the vent rectangular hole 10, distributed left and right. One of the baffles 4 has an upper shaft... The long rotating shaft 231 and the short rotating shaft 232 on the other baffle 4 are connected to a linkage assembly. Rotating the long rotating shaft 231 can drive the short rotating shaft 232 to rotate together. By using two baffles 4, the width of the shielding is increased, and the area that can be shielded from the vent rectangular hole 10 is increased. Compared with a single baffle 4, the width of a single baffle 4 can be reduced, thereby reducing the inertia of a single baffle 4 on the left and right sides, reducing deformation, and extending the service life of the baffle 4. The linkage assembly includes a connecting bracket 22 and a connecting rod 21 connected to the rear side of the baffle 4. One end of the connecting rod 21 is rotatably connected to the connecting bracket 22 of the left baffle 4, and the other end of the connecting rod 21 is rotatably connected to the connecting bracket 22 of the right baffle 4. The linkage component enables the two baffles 4 to move in tandem. A single drive unit drives the two baffles 4 to rotate, reducing manufacturing costs. Arched plates 6 are provided above and below the baffles 4. The side of the arched plate 6 away from the baffles 4 can fit against the wall of the vent rectangular hole 10. A hemisphere 2331 is provided at the bottom of the lower rotating shaft 233. The lower rotating shaft 233 can pass through the arched plate 6 below the baffles 4 so that the hemisphere 2331 is tangent to the wall of the vent rectangular hole 10. The long rotating shaft 231 and the short rotating shaft 232 can pass through the arched plate 6 above the baffles 4. The long rotating shaft 231 can pass through the valve body 1 and extend upward. The hemisphere 2331 is tangent to the wall of the vent rectangular hole 10, reducing the resistance to the rotation of the baffles 4 and reducing abnormal noise generated during rotation.

[0022] Please see Figure 2 - Figure 5 In this embodiment, the left and right sides of the arched plate 6 are respectively provided with baffles 32. The baffles 32 include a first plate 321 and a second plate 322. The first plate 321 can fit against the wall of the ventilation rectangular hole 10. The second plate 322 of the left baffle 32 can fit against the front side of the left baffle 4, and the second plate 322 of the right baffle 32 can fit against the rear side of the right baffle 4. The fit of the second plate 322 against the baffle 4 increases the shielding effect on the ventilation rectangular hole 10 and reduces the interference of the first plate 321 on the rotating baffle 4. The connecting bracket 22 includes a fourth plate 222 that fits against the rear side of the baffle 4 and a third plate 221 that fits against the bottom of the connecting rod 21. The top of the third plate 221 is provided with a through rotating hole 221. 2. A through-hole 2222 is provided on the rear side of plate 4 222. The top of the connecting rod 21 can be inserted into the rotating pin into the rotating hole 2212. The screw can be installed in the through-hole 2222 to connect with the baffle 4. Through the cooperation of the rotating hole 2212 and the rotating pin, the connecting bracket 22 can rotate through the linkage of each baffle 4. The through-hole 2222 reduces the assembly difficulty and makes it easy to install the corresponding screw. There are two avoidance positions 2221 and 2211 on plate 4 222 and plate 3 221 to avoid the upper rotating shaft. The avoidance positions 2211 and 2221 avoid the interference of rotation between the connecting bracket 22 and the upper rotating shaft, reducing the possibility of inflexible rotation.

[0023] During operation, the clamping block 5 is connected by bolts 52, which is faster and more secure than welding. The clamping block 5 is made of 3mm thick sheet metal and is molded one-to-one with the upper rotating shaft, lower rotating shaft 233, and baffle 4, ensuring a tight fit and secure fixation. The long rotating shaft 231 at the top of the valve body 1 is connected to the drive component, which is existing technology. When the drive component drives the long rotating shaft 231 to rotate, the baffle 4 connected to the right side of the long rotating shaft 231 moves and rotates. A connecting bracket is connected to the surface of the right baffle 4. 22. The connecting bracket 22 rotates together with the connecting rod 21. The other side of the connecting rod 21 is connected to the connecting bracket 22 of the left baffle 4. In this way, when the right baffle 4 rotates, the left baffle 4 can also rotate together, so as to realize the opening or closing effect of the baffle 4 in the valve body 1. The hemisphere 2331 at the bottom of the lower rotating shaft 233 can contact the wall of the vent rectangular hole 10, reducing the scraping between the bottom of the baffle 4 and the arched plate 6. The structure of the hemisphere 2331 changes the original surface contact to point contact, reducing the rotation resistance.

[0024] Through the above steps, the upper or lower rotating shaft 233 cooperates with the clamping block 5 to clamp the baffle 4, increasing the firmness of the connection of the baffle 4. At the same time, the upper and lower rotating shafts 233 can firmly connect the baffle 4, preventing the connection point from loosening due to frequent rotation and opening of the baffle 4. The baffle 4 is stamped from a 3 mm thick plate, which can fit tightly with the upper and lower rotating shafts 233 to solve the problems in the prior art where the galvanized layer of the fire valve made of galvanized sheet welding is easily damaged and becomes easy to rust, and the blades formed by the butterfly pressure plate are easy to deform and have poor durability.

Claims

1. A securely connected fire damper blade fixing block, comprising a valve body (1) and a venting rectangular hole (10) passing through the valve body (1) from front to back, characterized in that: It also includes a venting rectangular hole (10) with a rotating baffle (4) inside. The baffle (4) includes a reinforcing bending groove (41), and bending grooves (42) are provided on the left and right sides of the bending groove (41). An upper rotating shaft and a lower rotating shaft (233) are embedded in the bending groove (41). A clamping block (5) is installed on the side of the baffle (4) away from the upper rotating shaft and the lower rotating shaft (233). The clamping block (5) is attached to the side of the baffle (4) away from the upper rotating shaft and the lower rotating shaft (233). The baffle plate (4) has a clearance opening (51) for the clearance bending groove (41) on one side. The clamping block (5) has a bolt (52) on the side away from the baffle plate (4). The bolt (52) can pass through the clamping block (5) and the baffle plate (4) and engage with the upper or lower rotating shaft (233). The upper rotating shaft can protrude from the top surface of the baffle plate (4), and the lower rotating shaft (233) can protrude from the bottom surface of the baffle plate (4).

2. The fire damper blade fixing block with reliable connection as described in claim 1, characterized in that: The number of baffles (4) rotatably connected inside the vent rectangular hole (10) is two. The two baffles (4) are distributed left and right. The upper rotating shaft on one baffle (4) is a long rotating shaft (231), and the upper rotating shaft on the other baffle (4) is a short rotating shaft (232). The two baffles (4) are connected to a linkage component. Rotating the long rotating shaft (231) can drive the short rotating shaft (232) to rotate together.

3. The fire damper blade fixing block with reliable connection as described in claim 2, characterized in that: The linkage assembly includes a connecting bracket (22) and a connecting rod (21) connected to the rear side of the baffle (4), wherein one end of the connecting rod (21) is rotatably connected to the connecting bracket (22) of the left baffle (4), and the other end of the connecting rod (21) is rotatably connected to the connecting bracket (22) of the right baffle (4).

4. The fire damper blade fixing block with reliable connection as described in claim 3, characterized in that: An arched plate (6) is provided above and below the baffle (4). The side of the arched plate (6) away from the baffle (4) can fit against the wall of the vent rectangular hole (10). A hemisphere (2331) is provided at the bottom of the lower rotating shaft (233). The lower rotating shaft (233) can pass through the arched plate (6) below the baffle (4) so ​​that the hemisphere (2331) is tangent to the wall of the vent rectangular hole (10). The long rotating shaft (231) and the short rotating shaft (232) can pass through the arched plate (6) above the baffle (4) respectively. The long rotating shaft (231) can pass through the valve body (1) and extend upward.

5. The fire damper blade fixing block with reliable connection as described in claim 4, characterized in that: The arched plate (6) is provided with corner blocks (32) on the left and right sides respectively. The corner blocks (32) include a first plate (321) and a second plate (322). The first plate (321) can fit against the wall of the ventilation rectangular hole (10). The second plate (322) of the left corner block (32) can fit against the front side of the left baffle (4), and the second plate (322) of the right corner block (32) can fit against the rear side of the right baffle (4).

6. The fire damper blade fixing block with secure connection as described in claim 5, characterized in that: The connecting bracket (22) includes a plate four (222) that fits the back of the baffle (4) and a plate three (221) that fits the bottom of the connecting rod (21). The top of the plate three (221) is provided with a through rotating hole (2212), and the back of the plate four (222) is provided with a through elongated hole (2222). The top of the connecting rod (21) can be inserted into the rotating hole (2212), and a screw can be installed in the elongated hole (2222) to connect with the baffle (4).

7. The fire damper blade fixing block with reliable connection according to claim 6, characterized in that: On plate four (222) and plate three (221), there are two avoidance positions (2221) and one avoidance position (2211) to avoid the upper rotating shaft.

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