Retroverted centrifugal fan convenient to adjust

Abstract

The backward-tilting centrifugal fan convenient to adjust comprises a fixed base, the four corners of the top of the fixed base are fixedly connected with the bottoms of electric push rods, the tops of the four electric push rods are fixedly connected with the four corners of the bottom of a supporting plate, and the center of the bottom of the supporting plate is fixedly connected with an adjusting box. The angle adjusting device has the advantages that through the angle adjusting mechanism driven by the first motor, the orientation angle of the adjusting base can be adjusted through the rotating shaft, meanwhile, the angle adjusting mechanism is driven by the first motor, and the adjusting base is fixedly connected with the adjusting box. The position of the adjusting moving block can be conveniently adjusted through the position adjusting mechanism driven by the second motor, so that the position of the centrifugal fan body is adjusted, the mounting block can be conveniently mounted and dismounted through the mounting mechanism facilitating mounting and dismounting, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a conveniently adjustable backward-inclined centrifugal fan. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and air intake of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains; inflation and propulsion of wind tunnel wind sources and hovercraft, etc. When using a centrifugal fan, it is sometimes necessary to adjust the direction and position of the centrifugal fan according to the use requirements, but most of the existing backward-inclined centrifugal fans are not easy to adjust, resulting in inconvenience in use. Utility Model Content

[0003] The utility model aims to provide a conveniently adjustable backward-inclined centrifugal fan to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a backward-inclined centrifugal fan with easy adjustment, comprising a fixed base, the four corners of the top of the fixed base are fixedly connected to the bottom of an electric push rod, the tops of the four electric push rods are fixedly connected to the four corners of the bottom of a support plate, the center of the bottom of the support plate is fixedly connected to an adjustment box, an angle adjustment mechanism is provided inside the adjustment box, an adjustment seat is fixedly connected to the top of the angle adjustment mechanism, a position adjustment mechanism is provided inside the adjustment seat, a mobile base is fixedly connected to the top of the position adjustment mechanism, a mounting block is fixedly installed inside the mobile base through a mounting mechanism, and a centrifugal fan body is fixedly installed on the top of the mounting block.

[0005] Preferably, the angle adjustment mechanism mainly includes a driving bevel gear, a driven bevel gear and a rotating shaft, the interior of the adjustment box is fixedly connected to a No. 1 motor, the output end of the No. 1 motor is fixedly connected to the driving bevel gear, the top of the driving bevel gear is meshingly connected to the driven bevel gear, the top of the driven bevel gear is fixedly connected to the rotating shaft, the outside of the rotating shaft is rotatably connected to the inside of the support plate, and the top of the rotating shaft is fixedly connected to the center of the bottom of the adjustment seat.

[0006] Preferably, the position adjustment mechanism mainly includes an adjusting screw and an adjusting moving block. A No. 2 motor is fixedly installed on one side of the adjustment seat. The output end of the No. 2 motor is fixedly connected to the adjusting screw. The adjusting screw is rotatably connected to the inside of the adjustment seat. The external thread of the adjustment seat is connected to the adjusting moving block. The adjusting moving block is fixedly connected to the bottom of the moving base.

[0007] Preferably, sliding blocks are fixedly connected to both sides of the bottom of the movable base, guide rods are slidably connected to the inside of the two sliding blocks, and the two guide rods are fixedly connected to the inside of the adjustment seat.

[0008] Preferably, the mounting mechanism mainly includes a mounting slide block and a mounting spring, two mounting slide blocks are slidably connected to both sides of the mounting block, four mounting slide blocks are fixedly connected to both sides of the mounting slide block, sliding rods are slidably connected to the inside of the side slide blocks, the sliding rods are fixedly connected to the inside of the mounting block and mounting springs are sleeved on the outside of the sliding rods, unlocking blocks are fixedly connected to the tops of the four mounting slide blocks, and the tops of the four unlocking blocks extend to the top of the mounting block and are slidably connected to the top of the mounting block.

[0009] Preferably, threaded holes are formed on both sides of the mounting block, and the mounting block is fixedly connected to the top of the mobile base through the threaded holes and mounting screws that cooperate with the threaded holes.

[0010] Preferably, the top of the mounting block is fixedly connected to a supporting block, the top of the supporting block is fixedly connected to a mounting plate, the mounting plate is fixedly mounted with motor No. 3 by fixing screws, the output end of motor No. 3 is fixedly mounted between one side of the centrifugal fan body, and the side of the centrifugal fan body away from motor No. 3 is fixedly mounted to the top of the movable base by a mounting ring.

[0011] Preferably, four corners of the fixed base are provided with mounting threaded holes, and the fixed base can be installed through the mounting threaded holes and screws matching the mounting threaded holes.

[0012] Compared with the prior art, the beneficial effects of the utility model are: through the angle adjustment mechanism driven by motor No. 1, the orientation angle of the adjustment seat can be adjusted by the rotating shaft, and at the same time, through the position adjustment mechanism driven by motor No. 2, the position of the adjustment moving block can be conveniently adjusted, thereby adjusting the position of the centrifugal fan body, and through the installation mechanism that is easy to install and release, the installation block can be conveniently installed and disassembled, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the appearance of the utility model;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the angle adjustment mechanism of the utility model;

[0016] Figure 4It is a schematic diagram of the three-dimensional structure inside the position adjustment mechanism of the utility model;

[0017] Figure 5 It is a schematic diagram of the three-dimensional structure inside the installation mechanism of the utility model.

[0018] In the figure: 1. Fixed base; 2. Electric push rod; 3. Support plate; 4. Adjustment box; 5. Motor No. 1; 6. Active bevel gear; 7. Driven bevel gear; 8. Rotating shaft; 9. Adjustment seat; 10. Motor No. 2; 11. Adjustment screw; 12. Adjustment moving block; 13. Moving base; 14. Sliding block; 15. Guide rod; 16. Mounting block; 17. Mounting slide block; 18. Side slide block; 19. Unlocking block; 20. Mounting spring; 21. Mounting screw; 22. Support block; 23. Mounting plate; 24. Fixing screw; 25. Motor No. 3; 26. Centrifugal fan body; 27. Mounting ring; 28. Mounting threaded hole; 29. ​​Angle adjustment mechanism; 30. Position adjustment mechanism; 31. Mounting mechanism. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-5 The utility model provides a technical solution: a backward-inclined centrifugal fan which is convenient to adjust, comprising a fixed base 1, the four corners of the top of the fixed base 1 are fixedly connected to the bottom of an electric push rod 2, the tops of the four electric push rods 2 are fixedly connected to the four corners of the bottom of a support plate 3, the center of the bottom of the support plate 3 is fixedly connected to an adjustment box 4, an angle adjustment mechanism 29 is provided inside the adjustment box 4, an adjustment seat 9 is fixedly connected to the top of the angle adjustment mechanism 29, a position adjustment mechanism 30 is provided inside the adjustment seat 9, a mobile base 13 is fixedly connected to the top of the position adjustment mechanism 30, a mounting block 16 is fixedly installed inside the mobile base 13 through a mounting mechanism 31, and a centrifugal fan body 26 is fixedly installed on the top of the mounting block 16.

[0021] Furthermore, the angle adjustment mechanism 29 mainly includes a driving bevel gear 6, a driven bevel gear 7 and a rotating shaft 8. The interior of the adjustment box 4 is fixedly connected to a No. 1 motor 5, the output end of the No. 1 motor 5 is fixedly connected to the driving bevel gear 6, the top of the driving bevel gear 6 is meshingly connected to the driven bevel gear 7, the top of the driven bevel gear 7 is fixedly connected to the rotating shaft 8, the outside of the rotating shaft 8 is rotatably connected to the inside of the support plate 3, and the top of the rotating shaft 8 is fixedly connected to the center of the bottom of the adjustment seat 9.

[0022] Furthermore, the position adjustment mechanism 30 mainly includes an adjusting screw 11 and an adjusting moving block 12. A No. 2 motor 10 is fixedly installed on one side of the adjusting seat 9. The output end of the No. 2 motor 10 is fixedly connected to the adjusting screw 11. The adjusting screw 11 is rotatably connected to the inside of the adjusting seat 9. The external thread of the adjusting seat 9 is connected to the adjusting moving block 12. The adjusting moving block 12 is fixedly connected to the bottom of the moving base 13.

[0023] Furthermore, sliding blocks 14 are fixedly connected to both sides of the bottom of the movable base 13 , and guide rods 15 are slidably connected inside the two sliding blocks 14 , and the two guide rods 15 are fixedly connected to the inside of the adjustment seat 9 .

[0024] Furthermore, the mounting mechanism 31 mainly includes mounting sliders 17 and mounting springs 20, two mounting sliders 17 are slidably connected to both sides of the mounting block 16, side sliders 18 are fixedly connected to both sides of the four mounting sliders 17, sliding rods are slidably connected to the inside of the side sliders 18, the sliding rods are fixedly connected to the inside of the mounting block 16 and the outer sides of the sliding rods are sleeved with mounting springs 20, unlocking blocks 19 are fixedly connected to the tops of the four mounting sliders 17, and the tops of the four unlocking blocks 19 extend to the top of the mounting block 16 and are slidably connected to the top of the mounting block 16.

[0025] Furthermore, threaded holes are formed on both sides of the mounting block 16 , and the mounting block 16 is fixedly connected to the top of the mobile base 13 through the threaded holes and mounting screws 21 that cooperate with the threaded holes.

[0026] Furthermore, the top of the mounting block 16 is fixedly connected to a support block 22, the top of the support block 22 is fixedly connected to a mounting plate 23, the mounting plate 23 is fixedly mounted with a No. 3 motor 25 by means of fixing screws 24, the output end of the No. 3 motor 25 is fixedly mounted between one side of a centrifugal fan body 26, and the side of the centrifugal fan body 26 away from the No. 3 motor 25 is fixedly mounted to the top of the movable base 13 by means of a mounting ring 27.

[0027] Furthermore, four corners of the fixed base 1 are provided with mounting threaded holes 28 , and the fixed base 1 can be installed through the mounting threaded holes 28 and screws matched with the mounting threaded holes 28 .

[0028] Specifically, when using the utility model, firstly, the No. 3 motor 25 on one side of the centrifugal fan body 26 is fixedly installed on one side of the mounting plate 23 by means of the fixing screws 24, and then the mounting block 16 at the bottom of the support block 22 is inserted into the interior of the movable base 13, and under the action of the mounting spring 20, the mounting slider 17 is pushed into the groove inside the movable base 13, so as to limit the mounting block 16, and then the mounting screws 21 are screwed in to complete the fixed installation of the mounting block 16, and then the fixed base 1 is fixedly installed in the position to be used through the mounting threaded holes 28 and the screws, and when the angle needs to be adjusted, the No. 1 motor is turned on. The machine 5 drives the active bevel gear 6 and the driven bevel gear 7 to rotate, thereby driving the adjusting seat 9 to rotate through the rotating shaft 8, and then adjusting the direction of the adjusting seat 9 to complete the adjustment of the direction angle of the centrifugal fan body 26. When position adjustment is required, turn on the No. 2 motor 10, and adjust the position of the adjusting movable block 12 by adjusting the screw rod 11, and then adjust the position of the movable base 13 and the upper centrifugal fan body 26 for easy adjustment. When the mounting block 16 needs to be disassembled, first unscrew the mounting screw 21, then pull the four unlocking blocks 19, pull out the mounting slide block 17, and then lift the mounting block 16.

[0029] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0031] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A conveniently adjustable backward-inclined centrifugal fan, comprising a fixed base (1), characterized in that: The four corners of the top of the fixed base (1) are fixedly connected to the bottom of the electric push rod (2), the tops of the four electric push rods (2) are fixedly connected to the four corners of the bottom of the support plate (3), the center of the bottom of the support plate (3) is fixedly connected to an adjustment box (4), an angle adjustment mechanism (29) is provided inside the adjustment box (4), the top of the angle adjustment mechanism (29) is fixedly connected to an adjustment seat (9), the adjustment seat (9) is provided with a position adjustment mechanism (30), the top of the position adjustment mechanism (30) is fixedly connected to a movable base (13), a mounting block (16) is fixedly installed inside the movable base (13) through a mounting mechanism (31), and a centrifugal fan body (26) is fixedly installed on the top of the mounting block (16).

2. The easily adjustable backward-inclined centrifugal fan according to claim 1, characterized in that: The angle adjustment mechanism (29) mainly comprises a driving bevel gear (6), a driven bevel gear (7) and a rotating shaft (8); a first motor (5) is fixedly connected inside the adjustment box (4); an output end of the first motor (5) is fixedly connected to the driving bevel gear (6); the top of the driving bevel gear (6) is meshingly connected to the driven bevel gear (7); the top of the driven bevel gear (7) is fixedly connected to the rotating shaft (8); the outside of the rotating shaft (8) is rotatably connected to the inside of the support plate (3); and the top of the rotating shaft (8) is fixedly connected to the center of the bottom of the adjustment seat (9).

3. The easily adjustable backward-inclined centrifugal fan according to claim 1, characterized in that: The position adjustment mechanism (30) mainly comprises an adjustment screw (11) and an adjustment moving block (12); a No. 2 motor (10) is fixedly mounted on one side of the adjustment seat (9); an output end of the No. 2 motor (10) is fixedly connected to the adjustment screw (11); the adjustment screw (11) is rotationally connected to the inside of the adjustment seat (9); the adjustment moving block (12) is threadedly connected to the outside of the adjustment seat (9); and the adjustment moving block (12) is fixedly connected to the bottom of the moving base (13).

4. The easily adjustable backward-inclined centrifugal fan according to claim 3, characterized in that: Both sides of the bottom of the movable base (13) are fixedly connected with sliding blocks (14), the interiors of the two sliding blocks (14) are slidably connected with guide rods (15), and the two guide rods (15) are fixedly connected to the interior of the adjustment seat (9).

5. The easily adjustable backward-inclined centrifugal fan according to claim 1, characterized in that: The mounting mechanism (31) mainly comprises a mounting slide block (17) and a mounting spring (20); two mounting slide blocks (17) are slidably connected to both sides of the mounting block (16); four mounting slide blocks (17) are fixedly connected to both sides of the side slide blocks (18); the inside of the side slide blocks (18) are slidably connected to sliding rods; the sliding rods are fixedly connected to the inside of the mounting block (16) and the outside of the sliding rods are sleeved with mounting springs (20); the tops of the four mounting slide blocks (17) are fixedly connected to unlocking blocks (19); the tops of the four unlocking blocks (19) extend to the top of the mounting block (16) and are slidably connected to the top of the mounting block (16).

6. The easily adjustable backward-inclined centrifugal fan according to claim 5, characterized in that: Threaded holes are formed on both sides of the mounting block (16), and the mounting block (16) is fixedly connected to the top of the movable base (13) via the threaded holes and mounting screws (21) matched with the threaded holes.

7. The easily adjustable backward-inclined centrifugal fan according to claim 1, characterized in that: The top of the mounting block (16) is fixedly connected to a support block (22), the top of the support block (22) is fixedly connected to a mounting plate (23), a No. 3 motor (25) is fixedly mounted on the mounting plate (23) via fixing screws (24), an output end of the No. 3 motor (25) is fixedly mounted between one side of a centrifugal fan body (26), and a side of the centrifugal fan body (26) away from the No. 3 motor (25) is fixedly mounted to the top of the movable base (13) via a mounting ring (27).

8. The easily adjustable backward-inclined centrifugal fan according to claim 1, characterized in that: The four corners of the fixed base (1) are each provided with mounting threaded holes (28), and the fixed base (1) can be mounted via the mounting threaded holes (28) and screws matching the mounting threaded holes (28).

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