Quick mounting bracket for centrifugal fan

Abstract

The utility model belongs to the technical field of ventilator, specifically disclose a centrifugal fan quick installation support, including support seat, support seat fixed mounting has centrifugal fan, still include shock pad, shock pad inside integrated installation has shock absorber, and support seat fixed mounting is in shock pad, wherein, shock pad still include lower support and upper support, lower support passes through shock absorber fixed mounting upper support, when using, through shock absorber to the centrifugal fan in work do shock absorbing action, and need not extra add shock absorbing part. The utility model sets up shock pad between support seat and ground, utilizes the shock absorber integrated between upper and lower support to the vibration that centrifugal fan operation produced is absorbed and is isolated, when working, fan vibration force is passed through support seat and is transmitted to shock absorber, and shock absorbing element occurs elastic deformation to scatter vibration energy, thereby effectively reduce resonance and noise, realize the stable installation and quick shock absorbing integration effect of fan.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation fan technology, and specifically relates to a quick-install bracket for centrifugal fans. Background Technology

[0002] A centrifugal fan is a gas-powered device that accelerates and discharges incoming gas radially. Its working principle utilizes a rotating impeller to do work on the air, causing it to move outwards along the blade channels under centrifugal force, thereby achieving airflow pressurization and transport. The fan consists of a casing, impeller, main shaft, motor, air inlet, and regulating device. Air is drawn in through the fan shaft, gains energy through the rotating impeller, and is then discharged through the volute casing. Centrifugal fans offer advantages such as high air pressure, stable efficiency, smooth operation, low noise, and strong adaptability. They are widely used in industrial and mining enterprises, building ventilation, boiler induced draft, air conditioning purification, dust removal systems, and other fields, serving as a core power source in industrial production and civil ventilation systems.

[0003] Traditional centrifugal fans are mostly installed using fixed brackets. While these brackets provide basic support and fixation, the combined effects of airflow pulsation and motor vibration during high-speed operation often cause resonance between the brackets and the fan body. This not only increases operating noise and reduces structural stability but also easily leads to problems such as loose bolts and fatigue damage to connectors. To suppress vibration, independent shock absorbers are usually required, which not only takes up space and increases costs but also complicates the installation process and makes maintenance inconvenient. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a quick-installation bracket for centrifugal fans.

[0005] To achieve the above objectives, this utility model provides a quick-installation bracket for a centrifugal fan, including a support base on which a centrifugal fan is fixedly mounted, and a shock-absorbing frame. The shock-absorbing frame integrates a shock absorber, and the support base is fixedly mounted on the shock-absorbing frame. The shock-absorbing frame further includes a lower bracket and an upper bracket, with the lower bracket fixedly mounted to the upper bracket via the shock absorber. In use, the shock absorber dampens the centrifugal fan during operation, eliminating the need for additional shock-absorbing components.

[0006] In the above technical solution, further, there are four shock absorbers, and the four shock absorbers are arranged in pairs, with the two pairs of shock absorbers located inside the two sides of the shock absorber frame respectively.

[0007] In the above technical solution, the shock absorber further includes a fixing tube fixed to the lower support by a first screw and a flange fixed to the upper support by a second screw.

[0008] In the above technical solution, a piston rod is further provided on the upper part of the fixed tube by means of a spring, and one end of the piston rod extends through the upper part of the fixed tube to the outside and is fixedly connected to the flange. In the above technical solution, the fixed tube is further provided with an upper air chamber and a lower air chamber. The piston rod body is located inside the upper air chamber. An air hole is opened in the middle of the fixed tube to connect the upper air chamber and the lower air chamber. In use, damping and shock absorption are achieved through the air hole. In the above technical solution, a further step is to provide an annular air cavity inside the fixed tube, and an air groove inside the fixed tube connects the annular air cavity and the lower air cavity. A knob rotatably mounted at the lower part of the fixed tube has a screw fixedly connected to one end inside the fixed tube. The screw is slidably mounted inside a retaining ring within the fixed tube and is screwed to the knob, which is driven by the screw to perform a lifting and lowering action and to movably block the air groove. The lower air cavity and the annular air cavity are formed with a slow-release air cavity. In use, the opening and closing of the air groove is controlled by rotating the screw, thereby achieving two-level adjustment of the slow-release air cavity.

[0009] Compared with the prior art, this utility model has the following beneficial effects: by introducing an integrated vibration damping design into the centrifugal fan installation structure, the mechanical vibration and airflow impact generated by the fan during operation are effectively absorbed and isolated; specifically, the centrifugal fan is fixedly installed on the upper support of the vibration damping frame through a support base, and the vibration damping frame consists of upper and lower supports, which are flexibly connected by vibration dampers arranged inside; when the fan starts and runs, the dynamic balance deviation generated by the fan impeller rotation and the vibration force caused by air disturbance are first transmitted to the support base, and then absorbed and decomposed by the vibration dampers, thereby effectively reducing the vibration transmission to the lower support and the ground; The entire structure integrates support, connection, and vibration damping functions, achieving stable operation and noise suppression without the need for external vibration damping devices. This not only simplifies the installation process and improves the stability and safety of the fan's operation, but also significantly enhances the convenience of equipment maintenance and replacement. It is suitable for the efficient installation and operation needs of various centrifugal fan models. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a schematic diagram of the shock absorber frame structure proposed in this utility model; Figure 3 This is a schematic diagram of the shock absorber structure proposed in this utility model; Figure 4 This is a schematic cross-sectional view of the shock absorber proposed in this utility model.

[0011] In the diagram: 1. Support base; 2. Vibration damper frame; 3. Centrifugal fan; 4. Vibration damper; 201. Upper support; 202. Lower support; 401. Fixed tube; 402. Piston rod; 403. Flange; 404. First screw; 405. Second screw; 406. Knob; 407. Lead screw; 408. Retaining ring; 409. Spring; 410. Upper air chamber; 411. Lower air chamber; 412. Annular air chamber; 413. Air hole; 414. Air groove. Detailed Implementation To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0012] like Figures 1-4 The centrifugal fan quick-installation bracket shown includes a support base 1 on which a centrifugal fan 3 is fixedly installed, and a shock absorber frame 2. The shock absorber frame 2 integrates a shock absorber 4, and the support base 1 is fixedly installed on the shock absorber frame 2. The shock absorber frame 2 also includes a lower bracket 202 and an upper bracket 201. The lower bracket 202 is fixedly installed on the upper bracket 201 through the shock absorber 4. In use, the shock absorber 4 dampens the centrifugal fan 3 during operation, and no additional shock absorber components are required.

[0013] The aforementioned centrifugal fan quick-installation bracket effectively absorbs and isolates the mechanical vibration and airflow impact generated by the fan during operation by introducing an integrated vibration damping design into the centrifugal fan installation structure. Specifically, the centrifugal fan 3 is fixedly mounted on the upper support 201 of the shock absorber frame 2 via the support base 1. The shock absorber frame 2 consists of upper and lower supports 202, which are flexibly connected by shock absorbers 4 arranged inside. When the fan starts and runs, the dynamic balance deviation generated by the rotation of the fan impeller and the vibration caused by air disturbance are first transmitted to the support 1, and then absorbed and decomposed by the shock absorber 4, thereby effectively reducing the vibration transmission between the downward support 202 and the ground. The entire structure integrates support, connection and shock absorption functions, achieving stable operation and noise suppression without the need for external shock absorption devices.

[0014] In this embodiment, there are four shock absorbers 4, which are arranged in pairs, with the two pairs of shock absorbers 4 located inside the two sides of the shock absorber frame 2 respectively.

[0015] In this embodiment, the shock absorber 4 includes a fixed tube 401 fixed to the lower bracket 202 by a first screw 404, and a flange 403 fixed to the upper bracket 201 by a second screw 405. A piston rod 402 is slidably mounted on the upper part of the fixed tube 401 by a spring 409. One end of the piston rod 402 passes through the upper part of the fixed tube 401 and extends to the outside to be fixedly connected to the flange 403. An upper air chamber 410 and a lower air chamber 411 are opened inside the fixed tube 401. The main body of the piston rod 402 is located inside the upper air chamber 410. An air hole 413 is opened in the middle of the fixed tube 401 to connect the upper air chamber 410 and the lower air chamber 411. In use, damping and shock absorption are achieved by slow release through the air hole 413. The damping and absorption of vibration during operation of the centrifugal fan 3 are achieved through the coordinated operation of the fixed pipe 401, flange 403, piston rod 402 and internal air cavity.

[0016] Specifically, the fixed tube 401 is fixed to the lower bracket 202 by the first screw 404, the flange 403 is fixed to the upper bracket 201 by the second screw 405, the upper end of the piston rod 402 extends through the fixed tube 401 and is connected to the flange 403, and the main body of the piston rod 402 is located in the upper air chamber 410 inside the fixed tube 401.

[0017] The fixed pipe 401 has a central air hole 413 that connects the upper and lower air chambers 411. When the fan vibrates during operation, the vibration force is transmitted to the shock absorber 4 through the support seat 1, which causes the upper bracket 201 and flange 403 to have a slight relative displacement relative to the fixed pipe 401, thereby pushing the piston rod 402 to move in the upper air chamber 410. The air in the air chamber is forced to flow to the lower air chamber 411 through the central air hole 413.

[0018] When the airflow passes through the vent 413, it generates resistance, which gradually consumes the vibration energy and converts it into a small amount of heat energy. At the same time, the spring 409 provides additional elastic absorption to the piston rod 402, further buffering the vibration amplitude.

[0019] By combining piston sliding with slow release through the vent 413, the vibration of the fan is effectively suppressed. This not only reduces the risk of resonance and noise, but also achieves the effect of small size, flexible installation and adjustable damping of the shock absorber 4, which is suitable for the quick installation bracket system of the centrifugal fan 3 operating at high speed.

[0020] In this embodiment, an annular air cavity 412 is also provided inside the fixed tube 401, and an air groove 414 is provided inside the fixed tube 401 to connect the annular air cavity 412 and the lower air cavity 411. A knob 406, which is rotatably installed at the lower part of the fixed tube 401, is fixedly connected to a screw rod 407 at one end inside the fixed tube 401. The screw rod 407 is screwed into a retaining ring 408, which is slidably installed inside the fixed tube 401, and is driven by the screw rod 407 to perform a lifting and lowering action, and to movably block the air groove 414. The lower air cavity 411 and the annular air cavity 412 are formed with a slow-release air cavity. In use, the opening and closing of the air groove 414 is controlled by rotating the screw rod 407, thereby realizing the two-level adjustment action of the slow-release air cavity.

[0021] The shock absorber 4 further adjusts the structure to achieve adjustable damping through the annular air chamber 412, the slow-release air chamber and the air groove 414, so as to adapt to different vibration amplitudes and working conditions.

[0022] Specifically, in addition to the upper air chamber 410 and the lower air chamber 411, the fixed tube 401 is also provided with an annular air chamber 412, which is connected to the lower air chamber 411 through the through air groove 414. When the fan vibrates and drives the piston rod 402 to move, air can flow between the upper and lower air chambers 411 and the annular air chamber 412 to achieve damping absorption.

[0023] To adjust the damping, a knob 406 is rotatably installed at the lower part of the fixed tube 401. One end of the knob 406 is fixedly connected to a lead screw 407. The lead screw 407 passes through the inside of the fixed tube 401 and is screwed to a lead screw 407 that is slidably installed inside the retaining ring 408. When the knob 406 is rotated, the lead screw 407 drives the retaining ring 408 to rise and fall longitudinally along the fixed tube 401, and the retaining ring 408 seals or opens the air groove 414 accordingly.

[0024] By opening and closing the air groove 414, the airflow path between the annular air chamber 412 and the lower air chamber 411 is controlled, so that the slow-release air chamber forms different air resistances, thereby achieving a two-level adjustable damping effect.

[0025] During use, when the vibration is large, the air groove 414 is opened, and the air flows through the slow-release air chamber to increase the damping absorption amplitude; when the vibration is small, the air groove 414 is closed to reduce the air flow channel and reduce the damping, so that the shock absorber 4 can be flexibly adjusted according to the actual operation of the fan, improving the adaptability, stability and safety of the mounting bracket, and achieving damping adjustment without replacing structural components.

[0026] Working principle: By introducing an integrated vibration damping design into the centrifugal fan installation structure, the mechanical vibration and airflow impact generated by the fan during operation are effectively absorbed and isolated. Specifically, the centrifugal fan 3 is fixedly installed on the upper support 201 of the vibration damping frame 2 via the support base 1. The vibration damping frame 2 consists of upper and lower supports 202, which are flexibly connected by vibration dampers 4 arranged inside. When the fan starts and runs, the dynamic balance deviation generated by the fan impeller rotation and the vibration force caused by air disturbance are first transmitted to the support base 1, and then absorbed and decomposed by the vibration dampers 4, thereby effectively reducing the vibration transmission between the lower support 202 and the ground. The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A quick-install bracket for a centrifugal fan, comprising a support base (1), on which a centrifugal fan (3) is fixedly installed, characterized in that, Also includes: The shock absorber (2) is integrated with a shock absorber (4) inside the shock absorber (2), and the support seat (1) is fixedly installed on the shock absorber (2); The shock absorber (2) further includes a lower support (202) and an upper support (201), wherein the lower support (202) is fixedly mounted on the upper support (201) by the shock absorber (4). When in use, the shock absorber (4) reduces the vibration of the centrifugal fan (3) during operation, and no additional shock absorber components are required.

2. The centrifugal fan quick-installation bracket according to claim 1, characterized in that, The shock absorber (4) is provided in four groups of two, and the two groups of shock absorbers (4) are located inside the two sides of the shock absorber frame (2).

3. The centrifugal fan quick-installation bracket according to claim 1, characterized in that, The shock absorber (4) includes a fixing tube (401) fixed on the lower bracket (202) by a first screw (404) and a flange (403) fixed on the upper bracket (201) by a second screw (405).

4. The centrifugal fan quick-installation bracket according to claim 3, characterized in that, A piston rod (402) is slidably mounted on the upper part of the fixed tube (401) via a spring (409). One end of the piston rod (402) passes through the upper part of the fixed tube (401) and extends to the outside to be fixedly connected to the flange (403).

5. A quick-installation bracket for a centrifugal fan according to claim 4, characterized in that, The fixed tube (401) has an upper air chamber (410) and a lower air chamber (411) inside. The piston rod (402) is located inside the upper air chamber (410). An air hole (413) is opened in the middle of the fixed tube (401) to connect the upper air chamber (410) and the lower air chamber (411). In use, damping and shock absorption are achieved by slow release through the air hole (413).

6. A quick-installation bracket for a centrifugal fan according to claim 5, characterized in that, The fixed tube (401) is also provided with an annular air cavity (412), and an air groove (414) is provided inside the fixed tube (401) to connect the annular air cavity (412) and the lower air cavity (411). Among them, the knob (406) installed at the lower part of the fixed tube (401) is fixedly connected to a screw rod (407) at one end inside the fixed tube (401), and the screw rod (407) is screwed into the retaining ring (408) inside the fixed tube (401), and is driven by the screw rod (407) to perform lifting and lowering actions, and to actively block the air groove (414). The lower air chamber (411) and the annular air chamber (412) are formed with a slow-release air chamber. In use, the opening and closing of the air groove (414) is controlled by rotating the screw (407), thereby realizing the two-level adjustment action of the slow-release air chamber.

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