Small power frequency axial flow fan

Abstract

The utility model discloses a small power frequency axial flow fan which comprises a machine frame and an axial flow fan body, a first groove and a second groove are formed in the inner walls of the two sides of the machine frame respectively, a first sliding block is arranged in the first groove through a lead screw thread, a second sliding block is arranged in the second groove through a guide rod in a sliding mode, and the first sliding block and the second sliding block are arranged in the axial flow fan body. A first sliding block and a second sliding block are arranged in the axial flow fan body, an inner support is fixedly arranged between the first sliding block and the second sliding block, the two sides of the axial flow fan body rotate into the inner support through a connecting shaft, and the outer side of the connecting shaft is in transmission connection with a motor through a gear set. The two sides of the inner support are arranged on the inner wall of the rack in a sliding mode through the sliding blocks, the lead screws and the guide rods, the sliding blocks and the inner support can be adjusted in a lifting mode by rotating and adjusting the lead screws, the use height of the axial flow fan can be adjusted, air supply at different heights can be met, adjustment is convenient and fast, and precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to a small industrial frequency axial flow fan. Background Art

[0002] Axial flow fans are widely used. They are fans in which the airflow direction is in the same direction as the axis of the fan blades. For example, electric fans and air conditioner outdoor fans are fans that run in an axial flow mode. They are called "axial flow" because the gas flows parallel to the fan axis. Axial flow fans are usually used in situations where the flow rate requirements are high and the pressure requirements are low. Axial flow fans are fixed in position and move air. Axial flow fans are mainly composed of impellers, casings, motors and other parts. The bracket is connected to the casing and wind tube with steel. Among them, the impeller and casing of the anti-corrosion type axial flow fan are made of fiberglass, and other types of axial flow fans are generally made of steel plates.

[0003] A small industrial frequency axial flow fan with application number 202021837055.5 in the prior art includes an axial flow fan body and a lower support, a connecting seat is installed on one side of the lower end of the axial flow fan body, since the upper end of the upper bracket is hinged to the connecting seat through a first connecting shaft, and a cylinder is installed between the lower end of the axial flow fan body and the upper bracket through a second connecting shaft, so that one end of the axial flow fan body can be driven by the cylinder to adjust the up and down tilt, which is convenient for achieving the purpose of up and down air supply. However, it is not convenient to adjust the use height of the axial flow fan, it is difficult to meet the use of air supply at different heights, and the adjustment accuracy is low. Utility Model Content

[0004] The utility model aims to provide a small industrial frequency axial flow fan to solve the problems in the prior art that the axial flow fan is inconvenient to adjust the use height, is difficult to meet the needs of air supply at different heights, and has low adjustment accuracy.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a small industrial frequency axial flow fan, comprising a frame and an axial flow fan body, the inner walls on both sides of the frame are respectively provided with a first groove and a second groove, a first slider is provided in the first groove through a screw thread, a second slider is provided in the second groove through a guide rod for sliding, an inner bracket is fixed between the first slider and the second slider, and the two sides of the axial flow fan body are rotated in the inner bracket through a connecting shaft, and the outer side of the connecting shaft is connected to an electric motor through a gear set.

[0006] Furthermore, the frame includes a right-angled trapezoidal plate, and a stabilizing support plate is fixedly welded at the lower part between the two right-angled trapezoidal plates.

[0007] Furthermore, the first groove and the second groove on the inner wall of the frame are both configured as rectangular slide grooves, and the lead screw and the guide rod are arranged in parallel.

[0008] Furthermore, both ends of the screw rod are rotatably arranged on the inner wall of the frame through bearings, and one end of the screw rod passes through the top of the frame and is provided with an adjustment handle.

[0009] Furthermore, the gear set includes a driven gear arranged on the outside of the connecting shaft, and one end of the motor is drivingly connected to a driving gear meshing with the driven gear.

[0010] Furthermore, the motor is fixedly arranged on the inner wall of the inner bracket, and the motor is a stepping motor.

[0011] Furthermore, a locking screw is threadedly disposed on the inner wall of the inner bracket, and the locking screw is disposed perpendicularly to a gear of the gear set.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model rotates the two sides of the axial flow fan body in the inner bracket through the connecting shaft, and the two sides of the inner bracket are slidably arranged on the inner wall of the frame through the slider, the screw rod and the guide rod, so that the slider and the inner bracket can be adjusted by rotating the screw rod, so that the use height of the axial flow fan can be adjusted, thereby meeting the use of air supply at different heights, and the adjustment is convenient and fast with high precision.

[0014] 2. In the utility model, the two sides of the axial flow fan body are rotated in the inner bracket through the connecting shaft, and the outer side of the connecting shaft is connected to the motor through the gear set. The gear set includes a driven gear arranged on the outer side of the connecting shaft, and one end of the motor is connected to the driving gear meshing with the driven gear. The connecting shaft is driven by the motor and the gear set to rotate forward and reverse, so that the inclination of the axial flow fan body can be adjusted to meet the air supply needs at different inclination angles, and the adjustment is convenient and quick.

[0015] 3. The utility model provides a locking screw through the inner wall thread of the inner bracket, and the locking screw is arranged perpendicular to a gear of the gear set, so that one end of the rotating locking bolt is pressed on the outer side wall of the driven gear of the gear set, and the inner bracket after rotation adjustment can be locked, which is beneficial to improve the stability of the axial flow fan body after tilt adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is the overall structural front view of the utility model;

[0019] Figure 3 It is an enlarged schematic diagram of the structure at point A of the present utility model.

[0020] In the figure: 1. frame; 2. first groove; 3. second groove; 4. screw; 5. first slider; 6. bearing; 7. adjustment handle; 8. guide rod; 9. second slider; 10. inner bracket; 11. connecting shaft; 12. axial fan body; 13. driven gear; 14. motor; 15. driving gear; 16. locking screw; 17. stabilizing support plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , Figure 2 , Figure 3 In the embodiment of the utility model, a small industrial frequency axial flow fan includes a frame 1 and an axial flow fan body 12. The inner walls on both sides of the frame 1 are respectively provided with a first groove 2 and a second groove 3. The first groove 2 is provided with a first slider 5 through a screw rod 4. Both ends of the screw rod 4 are rotatably arranged on the inner wall of the frame 1 through bearings 6, and one end of the screw rod 4 passes through the top of the frame 1 and is provided with an adjustment handle 7, which is convenient for rotating and adjusting the screw rod 4. A second slider 9 is slidably provided in the second groove 3 through a guide rod 8. The first groove 2 and the second groove 3 on the inner wall of the frame 1 are both arranged in a rectangular shape. The slide groove is convenient for improving the stability of the sliding adjustment of the slider in the groove, and the screw rod 4 and the guide rod 8 are arranged in parallel. The guide rod 8 is used for sliding and guiding the inner bracket 10 when the inner bracket 10 is raised and lowered. The inner bracket 10 is fixedly arranged between the first slider 5 and the second slider 9, and the two sides of the axial flow fan body 12 are rotated in the inner bracket 10 through the connecting shaft 11, so that by rotating the adjustment screw rod 4, the slider and the inner bracket 10 can be raised and lowered, thereby adjusting the use height of the axial flow fan, thereby meeting the use of air supply at different heights, and the adjustment is convenient and fast with high precision.

[0023] like Figure 1 and Figure 2As shown, in order to meet the needs of air supply at different tilt angles, the outer side of the connecting shaft 11 is connected to a motor 14 through a gear set, the gear set includes a driven gear 13 arranged on the outer side of the connecting shaft 11, one end of the motor 14 is connected to a driving gear 15 meshing with the driven gear 13, the motor 14 is fixed on the inner wall of the inner bracket 10, and the motor 14 adopts a stepping motor, so that the connecting shaft 11 is driven by the motor 14 and the gear set to adjust the forward and reverse rotation, so that the tilt of the axial flow fan body 12 can be adjusted, and the adjustment is convenient and quick.

[0024] like Figure 2 As shown, in order to improve the stability of the supporting structure of the axial flow fan body 12, the frame 1 includes a right-angled trapezoidal plate, and a stable support plate 17 is fixedly welded at the lower part between the two right-angled trapezoidal plates, so that the structure has high strength and high supporting stability.

[0025] like Figure 1 As shown, in order to lock the inner bracket 10 after rotation adjustment, a locking screw 16 is threaded on the inner wall of the inner bracket 10, and the locking screw 16 is arranged perpendicular to a gear of the gear set, so that by rotating one end of the locking screw 16 and pressing it on the outer side wall of the driven gear 13 of the gear set, the inner bracket 10 after rotation adjustment can be locked, which is beneficial to improve the stability of the axial flow fan body 12 after tilt adjustment.

[0026] The working principle and use process of the utility model are as follows: when in use, since the two sides of the axial flow fan body 12 are rotated in the inner bracket 10 through the connecting shaft 11, the two sides of the inner bracket 10 are slidably arranged on the inner wall of the frame 1 through the slider, the screw rod 4 and the guide rod 8, so that by rotating the screw rod 4, the slider and the inner bracket 10 can be adjusted to rise and fall, so that the use height of the axial flow fan can be adjusted, thereby meeting the use of air supply at different heights, and the adjustment is convenient and fast with high precision.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A small industrial frequency axial flow fan, comprising a frame (1) and an axial flow fan body (12), characterized in that: The inner walls of both sides of the frame (1) are respectively provided with a first groove (2) and a second groove (3); a first slider (5) is threadedly provided in the first groove (2) via a screw rod (4); a second slider (9) is slidably provided in the second groove (3) via a guide rod (8); an inner bracket (10) is fixedly provided between the first slider (5) and the second slider (9); and both sides of the axial flow fan body (12) are rotated in the inner bracket (10) via a connecting shaft (11); and the outer side of the connecting shaft (11) is connected to a motor (14) via a gear set.

2. A small industrial frequency axial flow fan according to claim 1, characterized in that: The frame (1) comprises right-angled trapezoidal plates, and a stabilizing support plate (17) is fixedly welded at the lower part between the two right-angled trapezoidal plates.

3. A small industrial frequency axial flow fan according to claim 2, characterized in that: The first groove (2) and the second groove (3) on the inner wall of the frame (1) are both arranged as rectangular sliding grooves, and the screw rod (4) and the guide rod (8) are arranged in parallel.

4. A small industrial frequency axial flow fan according to claim 1, characterized in that: The two ends of the screw rod (4) are rotatably arranged on the inner wall of the frame (1) via bearings (6), and one end of the screw rod (4) passes through the top of the frame (1) and is provided with an adjustment handle (7).

5. The small industrial frequency axial flow fan according to claim 1, characterized in that: The gear set comprises a driven gear (13) arranged outside the connecting shaft (11), and one end of the motor (14) is drivingly connected to a driving gear (15) meshingly connected to the driven gear (13).

6. A small industrial frequency axial flow fan according to claim 5, characterized in that: The motor (14) is fixedly arranged on the inner wall of the inner bracket (10), and the motor (14) is a stepping motor.

7. A small industrial frequency axial flow fan according to claim 1, characterized in that: The inner wall of the inner bracket (10) is threadedly provided with a locking screw (16), and the locking screw (16) is arranged perpendicular to a gear of the gear set.

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