Adjustable axial flow fan

Abstract

The adjustable axial flow fan comprises a machine shell, a motor support and an impeller, and is characterized in that the motor support is arranged in the middle of the machine shell through a connecting plate between the motor support and the inner end face of the machine shell, and the impeller is rotationally arranged in front of the motor support and rotationally arranged in the middle of the machine shell. The rotating mode can be achieved by fixing the transmission part of the blade through the electromagnetic valve so that the transmission part can be kept in a stable state during rotation, the transmission structure is achieved through the gear, the situation that the overall structure is unstable due to the vulnerability of the transmission rod is avoided, and direct manual intervention is not needed by adopting the mechanical adjustment mode in the scheme.

Description

Technical Field

[0001] The present invention relates to the technical field related to ventilation equipment, and in particular to an adjustable axial flow fan. Background Art

[0002] Axial flow fans are widely used in industrial and mining enterprises, and are widely used in the fields of ventilation and fire protection. However, the impeller blades of existing axial flow fans are all fixed blades. The wind speed can only be increased by changing the speed of the motor. Frequent changes in the output power of the fan will cause the electrode burden and easy damage, and the blades will be unstable when they rotate at high speed and only need to be supported by the connecting rod. Summary of the Invention

[0003] The present invention provides an adjustable axial flow fan to solve the technical problems arising from the above-mentioned background technology.

[0004] The adjustable axial flow fan includes a casing, a motor bracket, and an impeller, characterized in that the motor bracket is arranged in the middle of the casing through a connecting plate between the motor bracket and the inner end surface of the casing, the impeller is rotatably arranged in front of the motor bracket, and is rotatably arranged in the middle of the casing, a first drive motor is provided inside the motor bracket, the first drive motor drives the impeller, the middle part of the motor bracket is cylindrical, a gap is provided between the inner wall of the motor bracket and the first drive motor, and the inner wall of the motor bracket is provided with curved guide vanes in a circumferential array, a gear box is provided in the middle of the impeller, the first drive motor coaxially drives the gear box, a main bevel gear is rotatably provided on the front end surface of the gear box, a transmission bevel gear is circumferentially arranged on the inner end surface of the gear box, the transmission bevel gear is meshed with the main bevel gear, the rotating shaft of the transmission bevel gear rotates through the gear box, and the upper end of the rotating shaft is connected to the bottom end of the blade of the impeller, a rotating ring is rotatably provided on the front inner end surface of the casing, and the upper end of the blade of the impeller is rotatably connected to the inner end surface of the rotating ring.

[0005] The adjustable axial flow fan according to the claim is characterized in that an adjustment disk is rotatably provided on the front end surface of the gear box, the adjustment disk rotates coaxially with the main bevel gear, and the side end surface of the adjustment disk is provided with friction lines.

[0006] The adjustable axial flow fan according to the claim is characterized in that a hollow support beam is provided in an array on the front outer end face of the casing, a gear rod is movably provided in the middle of the support beam, a bearing plate is provided at the upper end of the support beam, a second drive motor is provided on the upper end face of the bearing plate, the second drive motor drives a transmission gear, the transmission gear is engaged with the gear rod, and the bottom end of the gear rod is connected to a top block.

[0007] The adjustable axial fan according to the claim is characterized in that the middle part of the support beam is connected to the interior of the casing, the top block is movably arranged in the middle part of the support beam, and the lower end of the top block is a curved surface, the end surface of the curved surface is provided with friction lines, and the support beams are arranged in a 180° array around the outer end of the casing, and the array is at least three groups.

[0008] The adjustable axial flow fan according to the claim is characterized in that a frame is provided in an array on the outer end surface of the middle part of the casing, a wheel seat is movably provided in the middle part of the frame, a top wheel is rotatably provided at the lower part of the wheel seat, the top wheel rotates through the casing, and the end surface of the top wheel contacts the outer end surface of the rotating circle, and a spring is provided between the upper end surface of the wheel seat and the top end of the frame.

[0009] The adjustable axial flow fan according to the claim is characterized in that the outer end surface array of the adjustment disk is provided with a solenoid valve, a limiting rod is provided in the middle of the solenoid valve for movement, the limiting rod moves through the adjustment disk, a spring is provided between the upper end of the limiting rod and the inner end surface of the solenoid valve, and the outer section array of the gear box is provided with a limiting hole.

[0010] The adjustable axial flow fan according to claim is characterized in that a conical cover is provided at the front end of the motor bracket, a driving rod of the first driving motor rotates through the conical cover, and ventilation holes are provided through the end face array of the conical cover.

[0011] The adjustable axial flow fan according to claim 1 is characterized in that the motor bracket end face array is passed through by a fixing bolt, and the end face of the fixing bolt is in fixed contact with the first drive motor.

[0012] The adjustable axial flow fan according to claim 1 is characterized in that a wind speed sensor is provided in the middle of the rear portion of the housing and is mounted in the middle of the housing via a support rod. The adjustable axial flow fan according to claim 1 is characterized in that an auxiliary rod is provided between the outer end surface of the gear box and the inner end surface of the rotating ring, and the auxiliary rod is disposed between the blades of the impeller.

[0013] Beneficial effects: This solution uses gear transmission to change the rotation of the impeller blades, and the rotation method can fix the transmission part of the blades through an electromagnetic valve, so that it maintains a relatively stable state during rotation, and the transmission structure is realized through gears to avoid the overall structural instability caused by the fragility of the transmission rod, and this solution uses mechanical adjustment and does not require direct human intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front main perspective view of the present invention; Figure 2 This is a rear main perspective view of the present invention; Figure 3 This is the main view of the present invention; Figure 4It is a side view analysis diagram of the present invention; Figure 5 For the present invention Figure 4 A magnified view of point A; Figure 6 This is a sectional view of the impeller of the present invention; Figure 7 This is a structural diagram of the gearbox of the present invention; Figure 8 This is a diagram of the framework structure of the present invention; Figure 9 This is a structural diagram of the support beam of the present invention; Figure 10 This is a sectional view of the support beam of the present invention; Figure 11 This is a structural diagram of the conical cover of the present invention.

[0015] Names and serial numbers of parts in the figure: casing 1, rotating circle 101, support beam 102, gear rod 1021, bearing plate 1022, second drive motor 1023, transmission gear 1024, top block 1025, frame 103, wheel seat 1031, top wheel 1032, wind speed sensor 104, motor bracket 2, first drive motor 201, curved guide vane 202, conical cover 203, ventilation hole 2031, fixing bolt 204, impeller 3, gear box 301, main bevel gear 3011, transmission bevel gear 3012, adjusting disk 3013, solenoid valve 30131, limiting rod 30132, limiting hole 3014, auxiliary rod 305. DETAILED DESCRIPTION

[0016] The following is a detailed description of the implementation process of the present invention in conjunction with the accompanying drawings. The embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a bolt connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] like Figure 1-11The adjustable axial flow fan shown includes a casing 1, a motor bracket 2, and an impeller 3. The motor bracket 2 is arranged in the middle of the casing 1 through a connecting plate between the motor bracket 2 and the inner end surface of the casing 1. The impeller 3 is rotatably arranged in front of the motor bracket 2 and rotatably arranged in the middle of the casing 1. A first drive motor 201 is provided inside the motor bracket 2. The first drive motor 201 drives the impeller 3. The middle part of the motor bracket 2 is cylindrical. A gap is provided between the inner wall of the motor bracket 2 and the first drive motor 201. The inner wall of the motor bracket 2 is provided with a curved guide vane 202 in a circumferential array. A gear box 301 is provided at the top, and the first drive motor 201 coaxially drives the gear box 301. A main bevel gear 3011 is rotatably provided on the front end surface of the gear box 301. A transmission bevel gear 3012 is circumferentially arranged on the inner end surface of the gear box 301. The transmission bevel gear 3012 is meshed with the main bevel gear 3011. The rotating shaft of the transmission bevel gear 3012 rotates through the gear box 301, and the upper end of the rotating shaft is connected to the bottom end of the blade of the impeller 3. A rotating circle 101 is rotatably provided on the inner end surface of the front part of the casing 1, and the upper end of the blade of the impeller 3 is rotatably connected to the inner end surface of the rotating circle 101.

[0019] Preferably, an adjustment disk 3013 is rotatably provided on the front end surface of the gear box 301 , and the adjustment disk 3013 rotates coaxially with the main bevel gear 3011 , and a side end surface of the adjustment disk 3013 is provided with friction lines.

[0020] Preferably, a hollow support beam 102 is provided in an array on the front outer end face of the casing 1, a gear rod 1021 is movably provided in the middle of the support beam 102, a supporting plate 1022 is provided at the upper end of the support beam 102, a second drive motor 1023 is provided on the upper end face of the supporting plate 1022, the second drive motor 1023 drives a transmission gear 1024, the transmission gear 1024 is engaged with the gear rod 1021, and the bottom end of the gear rod 1021 is connected to a top block 1025.

[0021] According to the adjustable axial fan of claim 3, the middle part of the support beam 102 is connected to the interior of the casing 1, the top block 1025 is movably arranged in the middle part of the support beam 102, and the lower end of the top block 1025 is a curved surface, the end surface of the curved surface is provided with friction lines, and the support beams 102 are arranged in a 180° array around the outer end of the casing 1, and the array is at least three groups.

[0022] Preferably, a frame 103 is provided in an array on the outer end face of the middle part of the casing 1, a wheel seat 1031 is movably provided in the middle part of the frame 103, a top wheel 1032 is rotatably provided at the lower part of the wheel seat 1031, the top wheel 1032 rotates through the casing 1, and the end face of the top wheel 1032 contacts the outer end face of the rotating circle 101, and a spring is provided between the upper end face of the wheel seat 1031 and the top end of the frame 103.

[0023] Preferably, an outer end face array of the adjustment disk 3013 is provided with an electromagnetic valve 30131, a limiting rod 30132 is provided in the middle of the electromagnetic valve 30131, the limiting rod 30132 moves through the adjustment disk 3013, a spring is provided between the upper end of the limiting rod 30132 and the inner end face of the electromagnetic valve 30131, and an outer cross-section array of the gear box 301 is provided with a limiting hole 3014.

[0024] Preferably, a conical cover 203 is provided at the front end of the motor bracket 2 , and the driving rod of the first driving motor 201 rotates through the conical cover 203 , and ventilation holes 2031 are provided through the end surface array of the conical cover 203 .

[0025] Preferably, a fixing bolt 204 is provided through the end array of the motor bracket 2 , and the end surface of the fixing bolt 204 is in fixed contact with the first drive motor 201 .

[0026] Preferably, a wind speed sensor 104 is provided in the middle of the rear portion of the housing 1 and is arranged in the middle of the housing 1 via a support rod. Preferably, an auxiliary rod 305 is provided between the outer end surface of the gear box 301 and the inner end surface of the rotating ring 101, and the auxiliary rod 305 is provided between the blades of the impeller 3.

[0027] Example 1: The motor bracket 2 is arranged in the middle of the casing 1 through a connecting plate between the motor bracket 2 and the inner end surface of the casing 1. The impeller 3 is rotatably arranged in front of the motor bracket 2 and is rotatably arranged in the middle of the casing 1. A first drive motor 201 is provided inside the motor bracket 2. The first drive motor 201 drives the impeller 3. The middle part of the motor bracket 2 is cylindrical. A gap is provided between the inner wall of the motor bracket 2 and the first drive motor 201. A fixing bolt 204 is provided through the end face array of the motor bracket 2. The end face of the fixing bolt 204 is fixedly contacted with the first drive motor 201. The position of the first drive motor 201 in the motor bracket 2 is fixed by adjusting the fixing screw. The inner wall of the motor bracket 2 is provided with a curved guide vane 202 in a circumferential array. When the impeller 3 rotates, it passes through the electrode bracket. The wind passing through the inside of the motor bracket 2 is accelerated by the guide vane, and the contact area is increased by the guide vane. A gear box 301 is provided in the middle of the impeller 3. The first drive motor 201 coaxially drives the gear box 301. The front end surface of the gear box 301 is rotated with a main bevel gear 3011. The inner end surface of the gear box 301 is circumferentially arranged with a transmission bevel gear 3012. The transmission bevel gear 3012 is meshed with the main bevel gear 3011. The rotating shaft of the transmission bevel gear 3012 rotates through the gear box 301, and the upper end of the rotating shaft is connected to the bottom end of the blade of the impeller 3. The front inner end surface of the casing 1 is rotated with a rotating circle 101. The upper end of the blade of the impeller 3 is rotatably connected to the inner end surface of the rotating circle 101. The outer surface of the adjusting disk 3013 The end face array is provided with a solenoid valve 30131, and a limiting rod 30132 is provided in the middle of the solenoid valve 30131. The limiting rod 30132 moves through the adjustment disk 3013. A spring is provided between the upper end of the limiting rod 30132 and the inner end face of the solenoid valve 30131. The outer cross-section array of the gear box 301 is provided with a limiting hole 3014. When the adjustment disk 3013 rotates, the solenoid valve 30131 is in the working state, the limiting rod 30132 in the solenoid valve 30131 rises, and the front end face of the gear box 301 rotates with an adjusting disk 3013. The adjusting disk 3013 rotates coaxially with the main bevel gear 3011. When the adjusting disk 3013 rotates to a position, the solenoid valve 30131 stops working, and the limiting rod 30132 rebounds through the adjusting disk 30 13 is inserted into the limiting hole 3014 on the front end surface of the gear box 301 to fix the adjusting disk 3013, so that the rotation angle of the blades of the impeller 3 is fixed through the meshing transmission between the main bevel gear 3011 and the transmission bevel gear 3012. The operation of the solenoid valve 30131 is realized by wireless control. A frame 103 is arranged in an array on the outer end surface of the middle part of the casing 1. A wheel seat 1031 is movably arranged in the middle of the frame 103. A top wheel 1032 is rotatably arranged at the lower part of the wheel seat 1031. The top wheel 1032 rotates through the casing 1, and the end surface of the top wheel 1032 contacts the outer end surface of the rotating circle 101. A spring is arranged between the upper end surface of the wheel seat 1031 and the top of the frame 103. When the impeller 3 rotates, the rotating circle 101 is in rotational contact with the pressure wheel to ensure the stability of the rotation.A wind speed sensor 104 is provided in the middle of the rear portion of the housing 1 and is mounted in the middle of the housing 1 via a support rod. An auxiliary rod 305 is provided between the outer end surface of the gearbox 301 and the inner end surface of the rotating ring 101. The auxiliary rod 305 is positioned between the blades of the impeller 3. The wind speed is measured by the wind speed sensor 104 and the rotation angle is controlled by the control system. The auxiliary rod 305 also ensures the rotational stability of the impeller 3.

[0028] Example 2: The side end surface of the adjustment disk 3013 is provided with friction lines, the middle part of the support beam 102 is connected to the interior of the casing 1, the top block 1025 is movably arranged in the middle of the support beam 102, and the lower end of the top block 1025 is a curved surface, the end surface of the curved surface is provided with friction lines, and the support beam 102 is arranged in a 180° array around the outer end of the casing 1. The 180° array can facilitate the installation of the support base of the fan, and there are at least three groups of arrays. A hollow support beam 102 is arranged in an array on the front outer end surface of the casing 1, and a gear rod 1021 is movably provided in the middle part of the support beam 102. A bearing plate 1022 is provided at the upper end of the support beam 102, and a second drive motor 1023 is provided on the upper end surface of the bearing plate 1022. The second drive motor 1023 drives a transmission gear 1024, and the transmission gear 1024 is engaged with the gear rod 1021. The bottom end of the gear rod 1021 is connected to the top block 1025. The second drive motor 1023 works through the transmission gear 1024 to make the rack rise and fall. When it falls to a certain position, the pressure block presses the side end face of the adjustment disk 3013, and the first drive motor 201 rotates slowly. The gear box 301 rotates. At this time, the adjustment disk 3013 is fixed. When the gear box 301 rotates, the main bevel gear 3011 inside the gear box 301 rotates the transmission bevel gear 3012 to realize the rotation of the blades, thereby realizing the size of the wind speed brought about by the rotation.

[0029] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An adjustable axial flow fan, comprising a housing (1), a motor support (2), and an impeller (3), wherein: The motor support (2) is arranged in the middle of the casing (1) via a connecting plate connected to the inner end surface of the casing (1); the impeller (3) is rotatably arranged in front of the motor support (2) and rotatably arranged in the middle of the casing (1); a first drive motor (201) is arranged inside the motor support (2); the first drive motor (201) drives the impeller (3); the middle of the motor support (2) is cylindrical; a gap is arranged between the inner wall of the motor support (2) and the first drive motor (201); and the inner wall of the motor support (2) is provided with curved guide vanes (202) in a circumferential array; a gear box (301) is arranged in the middle of the impeller (3); The motor (201) coaxially drives the gearbox (301); a main bevel gear (3011) is rotatably provided on the front end surface of the gearbox (301); transmission bevel gears (3012) are arranged in a circumferential manner on the inner end surface of the gearbox (301); the transmission bevel gears (3012) are meshed with the main bevel gears (3011); a rotating shaft of the transmission bevel gear (3012) rotatably passes through the gearbox (301); and the upper end of the rotating shaft is connected to the bottom end of the blades of the impeller (3); a rotating ring (101) is rotatably provided on the inner end surface of the front portion of the housing (1); and the upper end of the blades of the impeller (3) is rotatably connected to the inner end surface of the rotating ring (101).

2. The adjustable axial flow fan according to claim 1, characterized in that The front end surface of the gear box (301) is rotatably provided with an adjustment disk (3013), the adjustment disk (3013) rotates coaxially with the main bevel gear (3011), and the side end surface of the adjustment disk (3013) is provided with friction patterns.

3. The adjustable axial flow fan according to claim 2, characterized in that The front outer end surface array of the housing (1) is provided with a hollow support beam (102); a gear rod (1021) is movably provided in the middle of the support beam (102); a bearing plate (1022) is provided at the upper end of the support beam (102); a second drive motor (1023) is provided at the upper end surface of the bearing plate (1022); the second drive motor (1023) drives a transmission gear (1024); the transmission gear (1024) is meshed with the gear rod (1021); and the bottom end of the gear rod (1021) is connected to a top block (1025).

4. The adjustable axial flow fan according to claim 3, characterized in that The middle portion of the support beam (102) is connected to the interior of the housing (1), the top block (1025) is movably arranged in the middle portion of the support beam (102), and the lower end of the top block (1025) is a curved surface, the end surface of the curved surface is provided with friction patterns, and the support beams (102) are arranged in a 180° array around the outer end of the housing (1), and the array is provided in at least three groups.

5. The adjustable axial flow fan according to claim 1, characterized in that The outer end surface array in the middle of the housing (1) is provided with a frame (103); a wheel seat (1031) is movably provided in the middle of the frame (103); a top wheel (1032) is rotatably provided at the lower part of the wheel seat (1031); the top wheel (1032) rotates through the housing (1), and the end surface of the top wheel (1032) contacts the outer end surface of the rotating circle (101); and a spring is provided between the upper end surface of the wheel seat (1031) and the top end of the frame (103).

6. The adjustable axial flow fan according to claim 1, characterized in that The outer end surface array of the adjustment disk (3013) is provided with a solenoid valve (30131), the middle part of the solenoid valve (30131) is provided with a limiting rod (30132) for movement, the limiting rod (30132) moves through the adjustment disk (3013), a spring is provided between the upper end of the limiting rod (30132) and the inner end surface of the solenoid valve (30131), and the outer cross-section array of the gear box (301) is provided with limiting holes (3014).

7. The adjustable axial flow fan according to claim 1, characterized in that The front end of the motor bracket (2) is provided with a conical cover (203), the driving rod of the first driving motor (201) rotates and passes through the conical cover (203), and the end surface array of the conical cover (203) is provided with ventilation holes (2031).

8. The adjustable axial flow fan according to claim 1, characterized in that The motor bracket (2) has an end surface array through which fixing bolts (204) are provided, and the end surfaces of the fixing bolts (204) are in fixed contact with the first drive motor (201).

9. The adjustable axial flow fan according to claim 1, characterized in that A wind speed sensor (104) is provided in the middle of the rear portion of the casing (1), and is arranged in the middle of the casing (1) via a support rod. The adjustable axial flow fan according to claim 1 is characterized in that An auxiliary rod (305) is provided between the outer end surface of the gear box (301) and the inner end surface of the rotating circle (101), and the auxiliary rod (305) is arranged between the blades of the impeller (3).

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