A duct fan connection mounting assembly

Abstract

The utility model discloses a kind of pipeline fan connection installation components, it is related to pipeline fan installation technical field, comprising: installation bottom plate, the bottom surface of installation bottom plate is provided with pipeline body by mounting mechanism, the inner wall of pipeline body is fixedly installed with multiple fan bodies;Mounting mechanism includes: semicircular pipe clamp, the semicircular pipe clamp is provided with four, is fixedly installed on the outer wall of pipeline body respectively, four The semicircular pipe clamp all is provided with connecting assembly, the utility model is provided with connecting assembly design, the frequency adjustment function of quality and spring system and the energy dissipation function of viscous fluid damping are combined, the efficient suppression to pipeline fan broadband vibration is realized, compact structure, vibration and noise reduction effect is remarkable, prolongs equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of duct fan installation technology, specifically a duct fan connection and installation component. Background Technology

[0002] Duct fans refer to fans whose control parameters include air volume, total pressure, efficiency, noise, and motor power; they are also known as duct ventilation fans. Different types of fans are selected based on the physical and chemical properties of the gas being transported. When installing duct fans, connection and installation components are required for their connection and installation.

[0003] A search revealed a Chinese patent with publication number CN209324699U, which discloses a duct fan capable of quickly connecting pipes. The fan includes an installation pipe, a drive motor fixedly mounted inside the installation pipe, an impeller fixedly mounted on the output shaft of the drive motor, and connecting pipes at both ends of the installation pipe. A mating ring is coaxially fixedly mounted on the side of each connecting pipe near the installation pipe, with each mating ring corresponding to a specific connecting pipe. A connecting bracket connects the two connecting pipes. The installation pipe has a snap-fit ​​groove for engaging with the connecting bracket. Both connecting pipes have snap-fit ​​straps near the installation pipe to secure the mating rings and the pipe openings of the installation pipes. This invention offers the advantage of facilitating the installation of the fan by workers. However, current technologies cannot effectively suppress the broadband vibrations generated by duct fans during operation, causing vibration energy to be transmitted to the building structure through the duct, resulting in noise pollution and potentially structural fatigue. Furthermore, traditional rigid installation methods can easily cause resonance between the duct system and the fan's operating frequency, amplifying vibration and noise, and potentially leading to loosening of connecting components, affecting the safety and lifespan of the entire system.

[0004] Therefore, based on the above search and combined with existing technology, a duct fan connection and installation component is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a duct fan connection and installation assembly to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A duct fan connection and installation assembly includes: a mounting base plate, on the bottom surface of which a duct body is mounted via an installation mechanism, and multiple fan bodies are fixedly mounted on the inner wall of the duct body; the installation mechanism includes: four semi-circular pipe clamps, which are respectively fixedly mounted on the outer wall of the duct body, and each of the four semi-circular pipe clamps is provided with a connection component.

[0007] Preferably, the connecting component includes: a fixing block, which is fixedly installed on the outer wall of the semi-circular pipe clamp, and a sliding groove is provided on the side wall of the fixing block, and a limit rod is fixedly installed on the inner wall of the sliding groove.

[0008] Preferably, the connecting assembly further includes: a sliding block, which is slidably mounted on the outer wall of the limiting rod and located in the sliding groove. The top and bottom surfaces of the sliding block are provided with springs, and the ends of the two springs that are far apart from each other are connected to the inner wall of the sliding groove. An L-shaped connecting arm is fixedly mounted on the side wall of the sliding block.

[0009] Preferably, the connecting assembly further includes a cylinder, which is fixedly mounted on the bottom surface of the mounting base plate, the cylinder having a hollow interior and a circular hole on its bottom surface.

[0010] Preferably, the connecting assembly further includes: a damping piston, which is slidably installed in the inner wall of the cylinder, a piston rod is fixedly installed on the bottom surface of the damping piston, one end of the piston rod passes through a circular hole and connects to the top surface of the L-shaped connecting arm, the top surface of the damping piston is provided with multiple compression holes, and a sealing ring is provided on the bottom surface of the cylinder.

[0011] Preferably, the cavity inside the cylinder is used to store a high-viscosity damping fluid.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, by setting up a sliding block, spring, limiting rod, fixing block and L-shaped connecting arm to cooperate with each other, the natural frequency of the support system can be adjusted, which can effectively avoid the working frequency of the fan and prevent the resonance phenomenon from the root. 2. In this utility model, a viscous fluid damper consisting of a damping piston, a compression hole, and a cylinder filled with high-viscosity damping fluid is provided. This damper works in conjunction with the piston rod and the L-shaped connecting arm to efficiently convert the vibrational mechanical energy transmitted by the pipeline into heat energy and dissipate it, thus significantly reducing the transmission of vibration and noise. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from below; Figure 3 This is a schematic diagram of the disassembled structure of the connecting component of this utility model; Figure 4 This is a partial exploded view of the connecting component of this utility model; Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0014] In the diagram: 1. Mounting base plate; 2. Pipe body; 3. Fan body; 4. Semi-circular pipe clamp; 5. Fixing block; 6. Sliding groove; 7. Limiting rod; 8. Sliding block; 9. Spring; 10. L-shaped connecting arm; 11. Cylinder; 12. Circular hole; 13. Damping piston; 14. Piston rod; 15. Compression hole; 16. Sealing ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In one typical implementation of this application, please refer to Figures 1-5 As shown, a duct fan connection and installation assembly includes a mounting base plate 1 and an installation mechanism. The mounting base plate 1 is fixed to the building structure (such as a wall or floor) by fasteners such as expansion bolts or chemical anchors. A duct body 2 is provided on the bottom surface of the installation mechanism, and multiple fan bodies 3 are fixedly installed on the inner wall of the duct body 2 by means of welding or flange connection.

[0017] The installation mechanism includes four semi-circular pipe clamps 4 and four connecting assemblies. The four semi-circular pipe clamps 4 are paired together and fastened by bolt pairs, thereby reliably gripping the outer wall of the pipe body 2 to achieve fixed support of the pipe.

[0018] Each connecting assembly includes a fixed block 5, a sliding block 8, a spring 9, an L-shaped connecting arm 10, a cylinder 11, and a damping piston 13.

[0019] The fixing block 5 is fixedly installed on the outer wall of the semi-circular pipe clamp 4 by welding or bolting. A sliding groove 6 is provided on the side wall of the fixing block 5. A limit rod 7 is fixedly installed on the inner wall of the sliding groove 6, and the axis of the limit rod 7 is consistent with the length direction of the sliding groove 6.

[0020] The sliding block 8 is slidably sleeved on the outer wall of the limiting rod 7 and is integrally housed in the sliding groove 6, allowing it to slide along the axial direction of the limiting rod 7. Springs 9 are provided on both the top and bottom surfaces of the sliding block 8, with the ends of the two springs 9, which are far apart from each other, connected to the top and bottom inner walls of the sliding groove 6, respectively. The preload of the springs 9 allows the sliding block 8 to remain in the middle position of the sliding groove 6 without external force. An L-shaped connecting arm 10 is fixedly installed on the side wall of the sliding block 8.

[0021] The cylinder 11 is fixedly mounted on the bottom surface of the mounting base plate 1 by welding or bolting. The interior of the cylinder 11 is a hollow structure for storing a high-viscosity damping fluid (such as silicone oil). A circular hole 12 is provided at the center of the bottom surface of the cylinder 11.

[0022] The damping piston 13 is slidably mounted in the inner wall of the cylinder 11, forming a dynamic seal with the inner wall of the cylinder 11. A piston rod 14 is fixedly mounted on the bottom surface of the damping piston 13. One end of the piston rod 14 extends through the circular hole 12 to the outside of the cylinder 11, and is connected to the top surface of the L-shaped connecting arm 10 via a pin or ball joint, so that the swing of the L-shaped connecting arm 10 can be converted into the linear motion of the piston rod 14. The top surface of the damping piston 13 has multiple through compression holes 15. A sealing ring 16 is provided on the bottom surface of the cylinder 11. The sealing ring 16 tightly wraps around the piston rod 14 to seal the circular hole 12 and prevent the damping fluid from leaking from the gap between the piston rod 14 and the circular hole 12.

[0023] Working principle: When in use, the blower body 3 vibrates upon startup and is transmitted to the pipe body 2. The vibration of the pipe body 2 causes the semi-circular pipe clamp 4 and the fixing block 5 to vibrate together. The vibration of the fixing block 5 is transmitted to the sliding block 8 through the spring 9 in its sliding groove 6, driving the sliding block 8 to slide back and forth along the limit rod 7, and causing the L-shaped connecting arm 10 to swing. The swing of the L-shaped connecting arm 10 then pulls or pushes the piston rod 14 and the damping piston 13 connected thereto to perform reciprocating linear motion in the cylinder 11 filled with high-viscosity damping fluid. When the damping piston 13 moves, the compression hole 15 on it will cause the damping fluid to generate a huge pressure difference on both sides. The high-viscosity damping fluid will generate strong viscous frictional resistance when flowing through the small compression hole 15, thereby converting the mechanical energy of the vibration into heat energy and dissipating it. Meanwhile, the natural frequency of the sliding block 8, spring 9 and limiting rod 7 can be adjusted by changing the mass of the sliding block 8 or the stiffness of the spring 9, thereby avoiding the main operating frequency of the fan body 3, effectively preventing resonance, and further improving the vibration reduction effect.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A duct fan connection and installation assembly, characterized in that: include: Mounting base plate (1), the bottom surface of which is provided with pipe body (2) by installation mechanism, and multiple fan bodies (3) are fixedly installed on the inner wall of pipe body (2). The installation mechanism includes: a semi-circular pipe clamp (4), four of which are fixedly installed on the outer wall of the pipe body (2), and each of the four semi-circular pipe clamps (4) is provided with a connecting component; The connecting component includes: a fixing block (5), which is fixedly installed on the outer wall of the semi-circular pipe clamp (4), and a sliding groove (6) is provided on the side wall of the fixing block (5), and a limit rod (7) is fixedly installed on the inner wall of the sliding groove (6). The connecting assembly also includes: a sliding block (8), which is slidably mounted on the outer wall of the limiting rod (7) and located in the sliding groove (6). The top and bottom surfaces of the sliding block (8) are provided with springs (9), and the ends of the two springs (9) that are far apart from each other are connected to the inner wall of the sliding groove (6). An L-shaped connecting arm (10) is fixedly mounted on the side wall of the sliding block (8). The connecting assembly also includes a cylinder (11), which is fixedly installed on the bottom surface of the mounting base plate (1). The cylinder (11) has a cavity inside and a circular hole (12) is provided on the bottom surface of the cylinder (11). The connecting assembly also includes a damping piston (13), which is slidably installed in the inner wall of the cylinder (11). A piston rod (14) is fixedly installed on the bottom surface of the damping piston (13). One end of the piston rod (14) passes through the circular hole (12) and is connected to the top surface of the L-shaped connecting arm (10). The top surface of the damping piston (13) is provided with a plurality of compression holes (15), and the bottom surface of the cylinder (11) is provided with a sealing ring (16).

2. The duct fan connection and installation assembly according to claim 1, characterized in that: The cavity inside the cylinder (11) is used to store high-viscosity damping fluid.

Images