Inlet guide vane adjusting mechanism of high-pressure fan

Abstract

The utility model belongs to high pressure fan technical field especially relates to a kind of import guide vane adjusting mechanism of high pressure fan, including the shell, the shell is circular tubular structure, the both sides of the shell are fixed with flange, the axle of the shell is provided with connecting column, the shell and connecting column between fixed mounting are a plurality of reinforcing bars that are circularly equidistantly distributed, the shell and connecting column between and located the position below reinforcing rod are rotatably installed a plurality of rotating shafts that are circularly equidistantly distributed;The linkage of the present device through transmission ring, pull rod and rotating plate can drive all adjusting blades to rotate synchronously, and the angle is accurately controlled by matching stepper motor, the air intake and airflow speed can be flexibly adjusted, wireless control box supports remote wireless / Bluetooth control, without farmer entering high-temperature greenhouse manual adjustment, to avoid control lag;The fixed value rotation function of stepper motor is combined with lubricating sleeve to reduce rotation error, can control the adjustment deviation in smaller range, far more than the precision of traditional equipment.

Description

Technical Field

[0001] This utility model belongs to the field of high-pressure blower technology, and in particular relates to an inlet guide vane adjustment mechanism for a high-pressure blower. Background Technology

[0002] High-pressure blowers are key equipment in industrial production, facility agriculture ventilation, and gas transportation. Their inlet guide vane adjustment mechanism directly determines the accuracy of airflow control, airflow stability, and operating efficiency. As various industries increasingly demand "precision, stability, and low loss" in ventilation systems, the performance requirements for the inlet guide vane adjustment mechanism are also rising. It not only needs to flexibly adjust the airflow volume and direction but also adapt to long-term stable operation under high-pressure conditions to avoid affecting the overall performance of the blower due to adjustment failure, which could even lead to decreased production efficiency or environmental control imbalance.

[0003] However, current high-pressure blower inlet guide vane adjustment mechanisms still have many problems that urgently need to be solved. On the one hand, the multiple sets of guide vanes in traditional adjustment mechanisms are difficult to rotate synchronously, often resulting in large deviations in the opening angle of some guide vanes. This leads to turbulent airflow, which not only fails to meet the requirements for uniform airflow in specific scenarios but may also exacerbate noise and wear due to airflow impacting the blower impeller. Simultaneously, the lack of an effective sealing structure between the guide vanes results in significant air leakage under high-pressure conditions, leading to a large deviation between the actual airflow and the set value, significantly reducing the blower's ventilation efficiency. On the other hand, traditional mechanisms mostly rely on manual adjustment. If the blower is installed at a high location or in a confined space, operation is difficult and prone to adjustment lag, failing to respond promptly to changes in operating conditions. Furthermore, the adjustment precision is insufficient, making it difficult to accurately control the guide vane opening angle, which cannot meet the needs of scenarios requiring high ventilation precision. In addition, some mechanisms exhibit significant vibration transmission in the drive components, and the rotating parts lack effective lubrication protection, leading to wear and jamming of parts after long-term use, shortening service life and increasing maintenance costs. These problems all restrict the overall application effect of high-pressure blowers. Therefore, we propose an inlet guide vane adjustment mechanism for high-pressure blowers. Utility Model Content

[0004] The purpose of this invention is to provide an inlet guide vane adjustment mechanism for a high-pressure blower to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides an inlet guide vane adjustment mechanism for a high-pressure blower, comprising: The housing is a cylindrical structure with flanges fixed on both sides. A connecting column is provided at the center of the housing. Multiple reinforcing rods are fixedly installed between the housing and the connecting column at equal intervals around the circumference. Multiple rotating shafts are rotatably installed between the housing and the connecting column and below the reinforcing rods, with one end of the rotating shaft penetrating the inner wall of the housing and extending to the outside. Adjusting blades are fixedly installed on the rotating shafts, and the multiple adjusting blades form a disc-shaped structure when laid flat. An adjustment mechanism is provided on the outer circumference of the housing and is used to change the rotation direction of multiple rotating shafts. A drive mechanism is disposed on the outer circumference of the adjustment mechanism and is used to provide driving force to the adjustment mechanism.

[0006] Preferably, a side baffle blade is fixed to the upper surface of the adjusting blade at the right edge position by bolts, and a sealing gasket is provided on the protruding lower surface of the side baffle blade. When the adjusting blade is in a flat state, the protruding part of the side baffle blade is in contact with the upper surface of the adjacent adjusting blade on the right.

[0007] Preferably, a lubricating sleeve is fitted onto one end of the rotating shaft near the connecting column, and a rotating hole is provided on the outer circumference of the connecting column to accommodate the rotation of the lubricating sleeve. The rotating shaft rotates in cooperation with the lubricating sleeve and the rotating hole.

[0008] Preferably, the adjustment mechanism includes: A transmission ring is coaxially disposed on the outer circumference of the housing. Multiple ball bearings are arranged at equal intervals around the circumference on the upper surface of the transmission ring. A retainer fixed to the outer wall of the housing is disposed near the inner side of each ball bearing. A bearing seat is fixed to the outer wall of the retainer. The rotating shaft, bearing seat, and ball bearings are all coaxially disposed. A rotating plate is fixed to one end of the rotating shaft on its outer side. A pull rod is rotatably mounted on the other end of the rotating plate. A connecting block fixed to the outer wall of the transmission ring is rotatably mounted on the end of the pull rod away from the rotating plate.

[0009] Preferably, a reinforcing ring is provided directly above the transmission ring, the lower surface of the reinforcing ring is in contact with the outer circumferential wall of the ball bearing, and a plurality of connecting rods distributed at equal intervals around the circumference are provided between the reinforcing ring and the transmission ring, and the reinforcing ring is fixed to the transmission ring by the plurality of connecting rods.

[0010] Preferably, the drive mechanism includes: A support frame is fixedly installed on the outer circumference of the housing and directly opposite the outer end of one of the rotating shafts. A mounting base is fixedly installed on the outer wall of the support frame, and a stabilizing bushing is fixedly installed on the mounting base. A transmission shaft is rotatably installed inside the stabilizing bushing, and one end of the transmission shaft is coaxially connected to the rotating shaft. A motor bracket is fixed on the outer wall of the mounting base, and a stepper motor is fixed on the motor bracket. The output shaft of the stepper motor is coaxially connected to the other end of the transmission shaft.

[0011] Preferably, a wireless control box is fixed on the outer wall of the mounting base and located directly above the stabilizing bushing. The wireless control box contains a power supply module, a control module, a wireless module, and a Bluetooth module. The wireless control box is electrically connected to the stepper motor.

[0012] Preferably, a shock-absorbing pad is provided between the mounting base and the support frame.

[0013] The beneficial effects of this utility model are: 1. The inlet guide vane adjustment mechanism of this high-pressure blower, through the linkage of the transmission ring, the pull rod and the rotating plate, can drive all the adjustment vanes to rotate synchronously. With the precise control of the angle by the stepper motor, the air intake volume and airflow speed can be flexibly adjusted. At the same time, the side baffles on the adjustment vanes are equipped with sealing gaskets to reduce air leakage and ensure ventilation efficiency. It can also operate stably in high temperature and high humidity environments.

[0014] 2. The imported guide vane adjustment mechanism of this high-pressure blower, the wireless control box of this device supports remote wireless / Bluetooth control, eliminating the need for farmers to manually adjust in the high-temperature greenhouse and avoiding control lag; the fixed-value rotation function of the stepper motor combined with the lubrication sleeve reduces rotation error, and can control the adjustment deviation within a smaller range, far exceeding the precision of traditional equipment; in addition, the shock-absorbing pads absorb vibration and extend the life of components, which is extremely suitable for the needs of most high-pressure blowers with precise adjustment. Attached Figure Description

[0015] 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 the multiple sets of adjusting blades in the open state of this utility model; Figure 3 This is a schematic diagram of the transfer hole and lubrication sleeve of this utility model; Figure 4 This is a schematic diagram of the adjustment mechanism in this utility model; Figure 5 This is a schematic diagram of the drive mechanism in this utility model.

[0016] The markings in the diagram are as follows: 1. Housing; 2. Connecting column; 3. Reinforcing rod; 4. Rotating shaft; 5. Adjusting blade; 6. Side baffle blade; 7. Rotating hole; 8. Lubricating sleeve; 9. Reinforcing ring; 10. Transmission ring; 11. Linkage rod; 12. Ball bearing; 13. Card holder; 14. Bearing housing; 15. Rotating plate; 16. Pull rod; 17. Connecting block; 18. Support frame; 19. Mounting base; 20. Stabilizing bushing; 21. Transmission shaft; 22. Motor bracket; 23. Stepper motor; 24. Wireless control box; 25. Shock-absorbing pad. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1 - Figure 5 This application will be described in further detail.

[0018] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Example

[0019] This embodiment provides an inlet guide vane adjustment mechanism for a high-pressure blower, including: The housing 1 is a cylindrical structure with flanges fixed on both sides. A connecting column 2 is provided at the center of the housing 1. Multiple reinforcing rods 3 are fixedly installed between the housing 1 and the connecting column 2 and are distributed at equal intervals around the circumference. Multiple rotating shafts 4 are rotatably installed between the housing 1 and the connecting column 2 and below the reinforcing rods 3. The outer end of the rotating shaft 4 penetrates the inner wall of the housing 1 and extends to the outside. Adjusting blades 5 are fixedly installed on the rotating shaft 4. The multiple adjusting blades 5 are in a disc-shaped structure when laid flat. An adjustment mechanism is located on the outer circumference of the housing 1 and is used to change the rotation direction of multiple rotating shafts 4. The drive mechanism is located on the outer circumference of the adjustment mechanism and is used to provide driving force to the adjustment mechanism.

[0020] The housing 1 serves as the main frame of the entire regulating mechanism. Its cylindrical structure perfectly matches the airflow channel at the inlet of the high-pressure blower. The flanges on both sides can be quickly connected and fixed to other blower components without the need for complicated installation methods. The connecting column 2, located at the axial center of the housing 1, primarily provides positioning support for the reinforcing rod 3 and the rotating shaft 4, preventing them from shifting during installation or operation. Multiple reinforcing rods 3, evenly spaced around the circumference, are installed between the housing 1 and the connecting column 2 to enhance the housing 1's wind pressure resistance, given the high inlet air pressure during blower operation. Deformation will affect the operation of the entire mechanism; the rotating shaft 4 can rotate the adjusting blades 5 between the casing 1 and the connecting column 2. When multiple adjusting blades 5 are laid flat in a disc shape, they can block the air inlet. When air is needed, the adjusting mechanism drives the rotating shaft 4 to rotate, which can change the opening angle of the adjusting blades 5, thereby controlling the amount of air intake. It can also make the air intake direction more in line with the rotation direction of the fan impeller by adjusting the angle of the adjusting blades 5, reducing the noise generated by the airflow impacting the impeller. The drive mechanism provides sufficient power to the adjusting mechanism to ensure that the adjusting blades 5 can be adjusted smoothly. It is worth adding that all components in this device are coated with a dense anti-corrosion and waterproof layer, which can effectively reduce the adverse effects of humid and hot environments on this device. Example

[0021] This embodiment provides an inlet guide vane adjustment mechanism for a high-pressure blower. In addition to the technical solution of the above embodiment, it also has the following technical features: a side baffle 6 is fixed to the upper surface of the adjustment blade 5 at the right edge position by bolts, a sealing gasket is provided on the protruding lower surface of the side baffle 6, and the protruding part of the side baffle 6 is in contact with the upper surface of the adjacent right adjustment blade 5 when the adjustment blade 5 is in a flat state.

[0022] Among them, a side baffle blade 6 is installed on the right edge of the regulating blade 5, and a sealing gasket is also added, mainly to seal the gap between the regulating blades 5; the high inlet air pressure of the high-pressure blower is high, and even a very small gap will leak air. Air leakage will not only reduce the actual air intake, but also make the airflow turbulent, affecting the working efficiency of the blower; when the regulating blade 5 is laid flat, the protruding part of the side baffle blade 6 is close to the adjacent regulating blade 5, and the sealing gasket can further enhance the sealing effect and minimize the air leakage rate; moreover, the side baffle blade 6 is fixed with bolts, so if the sealing gasket ages later, it can be replaced by removing the bolts, which is very convenient for maintenance. Example

[0023] This embodiment provides an inlet guide vane adjustment mechanism for a high-pressure blower. In addition to the technical solution of the above embodiment, it also has the following technical features: a lubricating sleeve 8 is sleeved on one end of the rotating shaft 4 near the connecting column 2, and a rotating hole 7 is opened on the outer circumference of the connecting column 2 to accommodate the rotation of the lubricating sleeve 8. The rotating shaft 4 rotates and engages with the rotating hole 7 through the lubricating sleeve 8.

[0024] The end of the rotating shaft 4 closest to the connecting post 2 is fitted with a lubricating sleeve 8 and then inserted into the rotating hole 7 of the connecting post 2. This design is to make the rotating shaft 4 rotate more smoothly. If the rotating shaft 4 directly contacts the rotating hole 7, both will wear down over time, resulting in gaps. This would cause the rotating shaft 4 to jam when rotating, making it impossible to accurately adjust the angle of the adjusting blade 5. The lubricating sleeve 8 reduces friction between the rotating shaft 4 and the rotating hole 7, resulting in less wear even after long-term use. This ensures that the rotating shaft 4 rotates smoothly without jamming, allowing for more precise adjustment of the adjusting blade 5, and also extends the service life of the rotating shaft 4 and the connecting post 2, eliminating the need for frequent parts replacement. Example

[0025] This embodiment provides an inlet guide vane adjustment mechanism for a high-pressure blower. In addition to the technical solutions described in the above embodiments, it also has the following technical features: the adjustment mechanism includes: A transmission ring 10 is coaxially disposed on the outer circumference of the housing 1. Multiple ball bearings 12 are arranged circumferentially at equal intervals on the upper surface of the transmission ring 10. A retainer 13 is disposed near the inner side of the ball bearing 12 and fixed to the outer wall of the housing 1. A bearing seat 14 is fixed to the outer wall of the retainer 13. The rotating shaft 4 is coaxially disposed with the bearing seat 14 and the ball bearings 12. A rotating plate 15 is fixed to one end of the rotating shaft 4 on the outer side. A pull rod 16 is rotatably mounted on the other end of the rotating plate 15. A connecting block 17 fixed to the outer wall of the transmission ring 10 is rotatably mounted on the end of the pull rod 16 away from the rotating plate 15.

[0026] The transmission ring 10 is coaxially sleeved on the outside of the housing 1, and the ball bearing 12 on it allows the transmission ring 10 to rotate smoothly around the housing 1 without shifting. The retaining seat 13 is fixed to the outer wall of the housing 1, and the bearing seat 14 is mounted on the retaining seat 13. Moreover, the rotating shaft 4, the bearing seat 14, and the ball bearing 12 are all coaxial, which ensures that the rotating shaft 4 is always in the correct position when rotating and will not be tilted. The rotating plate 15 on the outside of the rotating shaft 4 is connected to the pull rod 16, and the pull rod 16 is connected to the connecting block 17 of the transmission ring 10. When the transmission ring 10 rotates, it will pull the pull rod 16 through the connecting block 17, and the pull rod 16 will then drive the rotating plate 15 to rotate, and the rotating plate 15 will drive the rotating shaft 4 to rotate synchronously. In this way, all the rotating shafts 4 will rotate together, and the opening angle of all the adjusting blades 5 can be kept consistent. There will be no situation where some adjusting blades 5 are opened too large and some are opened too small. The air intake will be more uniform and the fan operation will be more stable. Example

[0027] This embodiment provides an inlet guide vane adjustment mechanism for a high-pressure blower. In addition to the technical solution of the above embodiment, it also has the following technical features: a reinforcing ring 9 is provided directly above the transmission ring 10, the lower surface of the reinforcing ring 9 is in contact with the outer circumferential wall of the ball bearing 12, and a plurality of connecting rods 11 are provided between the reinforcing ring 9 and the transmission ring 10 at equal intervals around the circumference. The reinforcing ring 9 is fixed to the transmission ring 10 through the plurality of connecting rods 11, and the transmission ring 10 achieves the anti-fall-off function through the cooperation of the reinforcing ring 9 and the ball bearing 12.

[0028] The transmission ring 10 is the core component for achieving synchronous rotation of multiple rotating shafts 4. The entire adjustment process is smooth, so the stable rotation of the transmission ring 10 directly affects the accuracy of the unfolding angle of the adjusting blade 5. From a structural perspective, the transmission ring 10 and the connecting rod 11 are clamped on both sides of the ball bearing 12. The ball bearing 12 provides support for the smooth rotation of the transmission ring 10 and also restricts the radial position of the transmission ring 10, preventing the transmission ring 10 from shifting during smooth rotation. After the reinforcing ring 9 is fixed to the transmission ring 10 through multiple circumferentially spaced connecting rods 11, the lower surface of the reinforcing ring 9 will fit against the outer circumference of the ball bearing 12, and together with the transmission ring 10, "clamp" the ball bearing 12 from both sides. This firmly restricts the position of the ball bearing 12, achieving the effect of preventing the reinforcing ring 9 and the transmission ring 10 from falling off, and preventing the components from becoming loose. This structural design ensures that the transmission ring 10 maintains a stable posture when rotating smoothly following the adjustment action, preventing transmission deviation of the connecting block 17 and the pull rod 16 due to slight shaking. Combined with the stepper motor 23, which can achieve forward and reverse rotation, fixed-value rotation, and precise start and stop, when the stepper motor 23 drives one of the rotating shafts 4 to rotate, the transmission ring 10 can smoothly drive all the rotating shafts 4 to rotate synchronously through the connecting block 17, the pull rod 16, and the rotating plate 15. Ultimately, this ensures that the unfolding angle of multiple adjustment blades 5 remains consistent, which not only ensures the accuracy of airflow adjustment but also further improves the structural stability of the entire device. Example

[0029] This embodiment provides an inlet guide vane adjustment mechanism for a high-pressure blower. In addition to the technical solutions described in the above embodiments, it also has the following technical features: the drive mechanism includes: A support frame 18 is fixedly installed on the outer circumference of the housing 1 and is positioned directly opposite the outer end of one of the rotating shafts 4. A mounting base 19 is fixedly installed on the outer wall of the support frame 18. A stabilizing bushing 20 is fixedly installed on the mounting base 19. A transmission shaft 21 is rotatably installed inside the stabilizing bushing 20. One end of the transmission shaft 21 is coaxially connected to the rotating shaft 4. A motor bracket 22 is fixed on the outer wall of the mounting base 19. A stepper motor 23 is fixed on the motor bracket 22. The output shaft of the stepper motor 23 is coaxially connected to the other end of the transmission shaft 21.

[0030] The entire drive mechanism is the power source for adjusting the angle of all the adjusting blades 5: after the stepper motor 23 starts, its output shaft will directly drive the transmission shaft 21 to rotate. Because the transmission shaft 21 is coaxially connected to one of the rotating shafts 4, the rotating shaft 4 will rotate with the transmission shaft 21. When the rotating shaft 4 rotates, the rotating plate 15 fixed on its outer side will rotate synchronously. The rotating plate 15 will then pull the connecting rod 16 connected to it. The connecting rod 16 will then drive the connecting block 17 fixed on the outer wall of the transmission ring 10. In this way, the transmission ring 10 will be driven by the connecting block 17. The transmission ring 10 rotates around the circumference of the housing 1; after the transmission ring 10 rotates, the other connecting blocks 17 on its outer wall will pull the remaining rotating shaft 4 through the corresponding pull rod 16 and rotating plate 15, so that all rotating shafts 4 keep rotating synchronously; throughout the process, the stabilizing bushing 20 can prevent the transmission shaft 21 from shaking when it rotates, ensuring that the power is stably transmitted to the rotating shaft 4, while the support frame 18 and mounting base 19 can fix the stabilizing bushing 20, motor bracket 22 and other components to prevent deviation during power transmission, and finally realize the synchronous change of the unfolding angle of multiple adjusting blades 5. Example

[0031] This embodiment provides an inlet guide vane adjustment mechanism for a high-pressure blower. In addition to the technical solutions of the above embodiments, it also has the following technical features: a wireless control box 24 is fixed on the outer wall of the mounting base 19 and located directly above the stabilizing bushing 20. The wireless control box 24 is equipped with a power supply module, a control module, a wireless module and a Bluetooth module. The wireless control box 24 is electrically connected to the stepper motor 23.

[0032] The wireless control box 24 is mounted on the mounting base 19. The power supply module inside can provide a stable power supply to the stepper motor 23 without the need for additional complex wiring. The control module can receive commands to control the start, stop, and rotation angle of the stepper motor 23. The wireless module and Bluetooth module enable the wireless control box 24 to connect with mobile phones and control terminals. If the fan is installed at a high place or in a narrow place, the staff does not need to climb over. They can directly connect to the wireless control box 24 via Bluetooth or wireless to remotely adjust the stepper motor 23, thereby changing the opening angle of the adjusting blades 5 and controlling the air intake in real time. It is convenient and safe to operate. Example

[0033] This embodiment provides an inlet guide vane adjustment mechanism for a high-pressure blower. In addition to the technical solutions of the above embodiments, it also has the following technical features: a shock-absorbing pad 25 is provided between the mounting base 19 and the support frame 18.

[0034] The damping pads 25 installed between the mounting base 19 and the support frame 18 are mainly for vibration reduction. When the stepper motor 23 is working, it will generate vibration. Without the damping pads 25, the vibration will be transmitted through the mounting base 19 to the support frame 18, and then to the housing 1 and the rotating shaft 4. Over time, the housing 1 and the rotating shaft 4 will wear due to vibration, and the operating noise of the fan will be amplified. The damping pads 25 can absorb some of the vibration, reduce the impact of vibration on the housing 1 and the rotating shaft 4, make the drive mechanism run more smoothly, extend the service life of the entire adjustment mechanism, and also reduce the noise of the working environment.

[0035] Working principle: When it is necessary to adjust the air volume or inlet angle of the high-pressure blower, the entire adjustment mechanism will work in concert according to the following process: First, control commands are sent through the wireless control box 24. The control module in the wireless control box 24 receives the commands (whether they are local operations or signals sent remotely via wireless / Bluetooth), and then issues start, stop or direction commands to the stepper motor 23, while controlling the rotation angle of the stepper motor 23 to ensure adjustment accuracy.

[0036] Next, after the stepper motor 23 starts, its output shaft directly drives the drive shaft 21 to rotate. Since one end of the drive shaft 21 is coaxially connected to one of the rotating shafts 4, the rotating shaft 4 connected to the drive shaft 21 will rotate synchronously with the drive shaft 21. Furthermore, the drive shaft 21 has a stabilizing bushing 20 for auxiliary positioning, which prevents the drive shaft 21 from shifting during rotation. Therefore, the drive shaft 21 will smoothly carry the rotating shaft 4 to rotate synchronously. At the same time, the mounting base 19 and the support frame 18 can firmly fix the stabilizing bushing 20, motor bracket 22, and other components, ensuring that the power transmission does not deviate. The shock-absorbing pads 25 between the mounting base 19 and the support frame 18 absorb the vibration generated by the stepper motor 23 during operation, making the entire driving process smoother and reducing wear on other parts caused by vibration.

[0037] When the rotating shaft 4 rotates, the rotating plate 15 fixed on its outer side will rotate along with it. The pull rod 16, which is rotatably connected to the other end of the rotating plate 15, will be pulled / pushed. The end of the pull rod 16 away from the rotating plate 15 is rotatably connected to the connecting block 17 on the outer wall of the transmission ring 10. Therefore, the pull rod 16 will move the connecting block 17, eventually causing the transmission ring 10 to rotate smoothly around the circumference of the housing 1. It should be noted that the ball bearing 12 on the transmission ring 10 cooperates with the bracket 13 and the bearing seat 14, which can not only make the transmission ring 10 rotate smoothly, but also limit the radial position of the transmission ring 10 to avoid deviation. At the same time, the reinforcing ring 9 is fixed to the transmission ring 10 through the connecting rod 11, and the lower surface of the reinforcing ring 9 is in contact with the circumferential outer wall of the ball bearing 12, "clamping" the ball bearing 12 from both sides, which can prevent the transmission ring 10 or the ball bearing 12 from falling off, and further ensure the stability of the rotation of the transmission ring 10.

[0038] Finally, when the transmission ring 10 rotates, all the connecting blocks 17 on its outer wall move synchronously. Each connecting block 17 then pushes / pulls the adjacent rotating plate 15 through the corresponding pull rod 16. The rotating plate 15 then drives the rotating shaft 4 connected to it to rotate. In this way, all the rotating shafts 4 will rotate synchronously, thereby driving the adjusting blades 5 fixed on the rotating shafts 4 to change their unfolding angle together. When the unfolding angle of the adjusting blades 5 increases, the air volume at the fan inlet increases; when the unfolding angle decreases, the air volume decreases. At the same time, adjusting the angle of the adjusting blades 5 can also make the air intake direction more in line with the rotation direction of the fan impeller, reducing the noise caused by airflow impact. In addition, when the adjusting blades 5 need to be completely closed, multiple adjusting blades 5 are laid flat in a disc shape. At this time, the side baffles 6 on the adjusting blades 5 will fit against the upper surface of the adjacent adjusting blades 5 through the sealing gasket, which can effectively reduce air leakage and ensure the sealing effect.

[0039] The entire process is smooth, with all components working together. It can achieve precise control of the unfolding angle of the adjustment blades 5 through the stepper motor 23, and ensure that all adjustment blades 5 move synchronously through the adjustment mechanism, ultimately achieving stable adjustment of the inlet air volume and inlet angle of the high-pressure blower.

[0040] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An inlet guide vane adjustment mechanism for a high-pressure blower, characterized in that, include: The housing (1) is a cylindrical structure. Flanges are fixed on both sides of the housing (1). A connecting column (2) is provided at the center of the housing (1). Multiple reinforcing rods (3) are fixedly installed between the housing (1) and the connecting column (2) at equal intervals around the circumference. Multiple rotating shafts (4) are rotatably installed between the housing (1) and the connecting column (2) and below the reinforcing rods (3). The outer end of the rotating shaft (4) passes through the inner wall of the housing (1) and extends to the outside. Adjusting blades (5) are fixedly installed on the rotating shaft (4). The multiple adjusting blades (5) are in a disc-shaped structure when laid flat. An adjustment mechanism is provided on the outer circumference of the housing (1) and is used to change the rotation direction of multiple rotating shafts (4); A drive mechanism is disposed on the outer circumference of the adjustment mechanism and is used to provide driving force to the adjustment mechanism.

2. The inlet guide vane adjustment mechanism for a high-pressure blower according to claim 1, characterized in that, A side baffle (6) is fixed to the upper surface of the adjusting blade (5) at the right edge position by bolts. A sealing gasket is provided on the protruding lower surface of the side baffle (6). When the adjusting blade (5) is in a flat state, the protruding part of the side baffle (6) is in contact with the upper surface of the adjacent adjusting blade (5) on the right.

3. The inlet guide vane adjustment mechanism for a high-pressure blower according to claim 1, characterized in that, The rotating shaft (4) is fitted with a lubricating sleeve (8) at one end near the connecting column (2). The outer circumference of the connecting column (2) is provided with a rotating hole (7) that can accommodate the rotation of the lubricating sleeve (8). The rotating shaft (4) rotates in cooperation with the rotating hole (7) through the lubricating sleeve (8).

4. The inlet guide vane adjustment mechanism for a high-pressure blower according to claim 1, characterized in that, The adjustment mechanism includes: A transmission ring (10) is coaxially disposed on the outer circumference of the housing (1). The upper surface of the transmission ring (10) is provided with a plurality of ball bearings (12) distributed at equal intervals around the circumference. The ball bearings (12) are provided with a bracket (13) fixed to the outer wall of the housing (1) near the inner side of the housing (1). The outer wall of the bracket (13) is fixed with a bearing seat (14). The rotating shaft (4), the bearing seat (14) and the ball bearings (12) are all coaxially disposed. A rotating plate (15) is fixed to one end of the rotating shaft (4) on the outer side. A pull rod (16) is rotatably installed at the other end of the rotating plate (15). A connecting block (17) fixed to the outer wall of the transmission ring (10) is rotatably installed at the end of the pull rod (16) away from the rotating plate (15).

5. The inlet guide vane adjustment mechanism for a high-pressure blower according to claim 4, characterized in that, A reinforcing ring (9) is provided directly above the transmission ring (10). The lower surface of the reinforcing ring (9) is in contact with the outer circumferential wall of the ball bearing (12). A plurality of connecting rods (11) are provided between the reinforcing ring (9) and the transmission ring (10) in a circumferentially evenly spaced manner. The reinforcing ring (9) is fixed to the transmission ring (10) through the plurality of connecting rods (11).

6. The inlet guide vane adjustment mechanism for a high-pressure blower according to claim 1, characterized in that, The drive mechanism includes: A support frame (18) is fixedly installed on the outer circumferential wall of the housing (1) and directly opposite the outer end of one of the rotating shafts (4). A mounting base (19) is fixedly installed on the outer wall of the support frame (18). A stabilizing bushing (20) is fixedly installed on the mounting base (19). A transmission shaft (21) is rotatably installed inside the stabilizing bushing (20). One end of the transmission shaft (21) is coaxially connected to the rotating shaft (4). A motor bracket (22) is fixed on the outer wall of the mounting base (19). A stepper motor (23) is fixed on the motor bracket (22). The output shaft of the stepper motor (23) is coaxially connected to the other end of the transmission shaft (21).

7. The inlet guide vane adjustment mechanism for a high-pressure blower according to claim 6, characterized in that, A wireless control box (24) is fixed on the outer wall of the mounting base (19) and directly above the stabilizing bushing (20). The wireless control box (24) contains a power supply module, a control module, a wireless module and a Bluetooth module. The wireless control box (24) is electrically connected to the stepper motor (23).

8. The inlet guide vane adjustment mechanism for a high-pressure blower according to claim 6, characterized in that, A shock-absorbing pad (25) is provided between the mounting base (19) and the support frame (18).

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