An axial flow fan with cold wave protection function in a botanical garden

Abstract

The invention discloses an axial flow fan with a cold wave protection function in a botanical garden, comprising a vertical column, an inclined air guide tube is arranged above the column, the axial flow fan is installed in the air guide tube, a chassis is fixed to the top of the column, a rotating disk is arranged above the chassis, and a branch plate is formed on the outer wall of the rotating disk close to the lower end of the air guide tube; hinged shafts are fixed to the two side walls of the air guide tube, a side bracket is hinged to the hinged shaft through a bearing, and the lower end of the side bracket is fixed to the rotating disk; a vertical fixed pipe column is hinged to the center of the rotating disk through a bearing, and the lower end of the fixed pipe column is plugged and fixed to the chassis; a moving gear ring is fixed to the lower end surface of the rotating disk, a driving gear is meshed on the moving gear ring, a rotating motor is fixed to the lower end surface of the chassis, and the rotating shaft of the rotating motor passes through the chassis and is plugged and fixed in the driving gear.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and more particularly to an axial flow fan with a cold wave protection function in a botanical garden. Background Art

[0002] In early spring and late autumn, the temperature drops due to the invasion of cold air, especially on clear and windless nights and early mornings, when the ground temperature drops rapidly. Plants in the botanical garden, such as shrubs, flowers and plants, also cool down rapidly. When the surface temperature of the plants drops below 0°C, they will suffer from frost damage, and shrubs, flowers and plants may freeze to death and wither. Therefore, anti-frost measures need to be taken in the botanical garden. Installing anti-cold wave and anti-frost fans is an effective measure. Fans are used to transport higher hot air to the ground to avoid frost. At the same time, smoke is also used in conjunction with fans to improve the anti-cold wave effect. However, the existing anti-cold wave fans, whether they are transporting air or smoke, generally have a fixed and limited range to the ground. Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies of the prior art and to provide an axial flow fan with a cold wave protection function in a botanical garden. The axial flow fan can expand the range of radiation to the ground, thereby improving the effect of cold wave protection.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] An axial flow fan with cold wave protection function in a botanical garden comprises a vertical column, an inclined air guide tube is arranged above the column, an axial flow fan is installed in the air guide tube, a chassis is fixed on the top of the column, a rotating disk is arranged above the chassis, and a branch plate is formed on the outer wall of the rotating disk close to the lower end of the air guide tube; hinged shafts are fixed on the two side walls of the air guide tube, a side bracket is hinged on the hinged shaft through a bearing, and the lower end of the side bracket is fixed to the rotating disk; a vertical fixed pipe column is hinged at the center of the rotating disk through a bearing, and the lower end of the fixed pipe column is plugged and fixed to the chassis; a moving gear ring is fixed on the lower end surface of the rotating disk, a driving gear is meshed on the moving gear ring, a rotating motor is fixed on the lower end surface of the chassis, and the rotating shaft of the rotating motor passes through the chassis and is plugged and fixed in the driving gear;

[0006] A fixed gear ring is fixed on the fixed pipe column on the upper side of the rotating disk, and a transmission gear is meshed on the fixed gear ring. The center of the transmission gear is hinged to the fixed support column through a bearing, and the lower end of the fixed support column is fixed on the rotating disk. Relative guide grooves are formed on the upper and lower end surfaces of the transmission gear. The guide groove includes an inner arc groove, a middle arc groove and an outer arc groove with gradually increasing radius. Two adjacent arc grooves among the inner arc groove, the middle arc groove and the outer arc groove are connected by an oblique groove.

[0007] A slider is abutted on the upper end surface of the branch plate of the rotating disk, and the slider is hinged with a connecting rod through a pin shaft, and the upper end of the connecting rod is hinged with an ear plate through a pin shaft, and the ear plate is fixed to the outer wall of the lower end of the air guide tube; two linkage rods are formed on the slider, and the two linkage rods are respectively abutted against the upper and lower end surfaces of the transmission gear, and a vertical needle roller is inserted and fixed at the end of the linkage rod, and the needle roller is inserted in the guide groove of the transmission gear; a guide groove parallel to the branch plate is formed on the linkage rod, and a guide plate is inserted in the guide groove, and the lower end of the guide plate is inserted and fixed to the branch plate.

[0008] Preferably, the transmission gear is located between the sliding block and the fixed pipe column, and a support block is formed at the lower end of the fixed support column, and the support block abuts against the lower end surface of the transmission gear.

[0009] Preferably, the arc angle of the inner arc groove on the transmission gear is equal to the arc angle of the middle arc groove, and the arc angle of the middle arc groove is equal to the arc angle of the outer arc groove.

[0010] Preferably, the diameter of the transmission gear is greater than three times the diameter of the fixed gear ring, and the number of teeth of the transmission gear is greater than three times the number of teeth of the fixed gear ring.

[0011] Preferably, a conductive ring is fixed to the top sleeve of the fixed pipe column, and the lower end of the fixed pipe column is inserted into the column, and the column is a hollow column.

[0012] Preferably, the central axis of the rotating disk coincides with the central axis of the chassis, the central axis of the rotating disk coincides with the central axis of the movable gear ring, a thrust bearing is installed between the chassis and the rotating disk, and a gap is provided between the movable gear ring and the chassis.

[0013] Preferably, the air guide cylinder is composed of an upper cylindrical air inlet cylinder and a lower conical air outlet cylinder, and the hinged support shaft is welded and fixed on the opposite side walls of the air inlet cylinder; the ear plate is welded and fixed on the lower end of the air outlet cylinder.

[0014] Preferably, a smoke inlet pipe is plugged and fixed on the air inlet tube of the air guide tube.

[0015] The beneficial effect of the present invention is that the axial flow fan adopted by it increases the conveying distance of the airflow by adding an air guide tube, and cooperates with the pitch angle reciprocating adjustment structure to expand the range of warm air or radiation to the ground, thereby improving the effect of preventing cold waves. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the side view of the present invention;

[0018] Figure 3 Based Figure 2Schematic diagram of the cross-sectional structure at AA in the middle.

[0019] In the figure: 1, column; 2, air guide tube; 3, chassis; 4, rotating disk; 41, branch plate; 5, hinged support shaft; 6, side bracket; 7, fixed pipe column; 8, transmission gear; 81, guide groove; 811, inner arc groove; 812, middle arc groove; 813, outer arc groove; 9, slider; 91, linkage rod; 92, guide groove; 10, moving gear ring; 11, driving gear; 12, rotating motor; 13, fixed gear ring; 14, needle roller; 15, connecting rod; 16, ear plate; 17, guide plate; 18, limit column; 19, fixed support column; 191, support block; 20, conductive ring; 21, thrust bearing; 22, smoke inlet pipe. DETAILED DESCRIPTION

[0020] Example: See Figures 1 to 3 As shown, an axial flow fan with cold wave protection function in a botanical garden comprises a vertical column 1, an inclined air guide tube 2 is arranged above the column 1, an axial flow fan is installed in the air guide tube 2, a chassis 3 is fixed to the top of the column 1, a rotating disk 4 is arranged above the chassis 3, and a branch plate 41 is formed on the outer wall of the rotating disk 4 close to the lower end of the air guide tube 2; hinged shafts 5 are fixed to the two side walls of the air guide tube 2, and a side bracket 6 is hinged to the hinged shaft 5 through a bearing, and the lower end of the side bracket 6 is fixed to the rotating disk 4; a vertical fixed pipe column 7 is hinged to the center of the rotating disk 4 through a bearing, and the lower end of the fixed pipe column 7 is plugged and fixed to the chassis 3; a moving gear ring 10 is fixed to the lower end surface of the rotating disk 4, and a driving gear 11 is meshed on the moving gear ring 10, and a rotating motor 12 is fixed to the lower end surface of the chassis 3, and the rotating shaft of the rotating motor 12 passes through the chassis 3 and is plugged and fixed in the driving gear 11;

[0021] A fixed gear ring 13 is inserted and fixed on the fixed pipe column 7 on the upper side of the rotating disk 4, and a transmission gear 8 is meshed on the fixed gear ring 13. The center of the transmission gear 8 is hinged to the fixed support column 19 through a bearing, and the lower end of the fixed support column 19 is fixed on the rotating disk 4. Relative guide grooves 81 are formed on the upper and lower end surfaces of the transmission gear 8. The guide groove 81 includes an inner arc groove 811, a middle arc groove 812 and an outer arc groove 813 with gradually increasing radii. Two adjacent arc grooves among the inner arc groove 811, the middle arc groove 812 and the outer arc groove 813 are connected by an oblique groove.

[0022] A slider 9 is abutted on the upper end surface of the branch plate 41 of the rotating disk 4, and the slider 9 is hinged with a connecting rod 15 through a pin shaft, and the upper end of the connecting rod 15 is hinged with an ear plate 16 through a pin shaft, and the ear plate 16 is fixed to the outer wall of the lower end of the air guide tube 2; two linkage rods 91 are formed on the slider 9, and the two linkage rods 91 respectively abut against the upper and lower end surfaces of the transmission gear 8, and the end of the linkage rod 91 is plugged and fixed with a vertical needle roller 14, and the needle roller 14 is plugged into the guide groove 81 of the transmission gear 8; a guide groove 92 parallel to the branch plate 41 is formed on the linkage rod 91, and a guide plate 17 is plugged into the guide groove 92, and the lower end of the guide plate 17 is plugged and fixed to the branch plate 41.

[0023] The transmission gear 8 is located between the slider 9 and the fixed pipe column 7 . A support block 191 is formed at the lower end of the fixed support column 19 . The support block 191 abuts against the lower end surface of the transmission gear 8 .

[0024] The arc angle of the inner arc groove 811 on the transmission gear 8 is equal to the arc angle of the middle arc groove 812 , and the arc angle of the middle arc groove 812 is equal to the arc angle of the outer arc groove 813 .

[0025] The diameter of the transmission gear 8 is three times greater than the diameter of the fixed gear ring 13 , and the number of teeth of the transmission gear 8 is three times greater than the number of teeth of the fixed gear ring 13 .

[0026] A conductive ring 20 is fixed to the top sleeve of the fixed pipe column 7, and the lower end of the fixed pipe column 7 is inserted into the column 1, and the column 1 is a hollow column.

[0027] The central axis of the rotating disk 4 coincides with the central axis of the chassis 3 , and the central axis of the rotating disk 4 coincides with the central axis of the movable gear ring 10 . A thrust bearing 21 is installed between the chassis 3 and the rotating disk 4 , and a gap is provided between the movable gear ring 10 and the chassis 3 .

[0028] The air guide tube 2 is composed of an upper cylindrical air inlet tube and a lower conical air outlet tube. The hinged support shaft 5 is welded and fixed on the two opposite side walls of the air inlet tube; the ear plate 16 is welded and fixed on the lower end of the air outlet tube.

[0029] A smoke inlet pipe 22 is plugged and fixed on the air inlet tube of the air guide tube 2.

[0030] The guide plate 17 is plugged with a limit column 18 , which abuts against the linkage rod 91 .

[0031] Working principle: The present invention is an axial flow fan with cold wave protection function in a botanical garden. The technical point of the axial flow fan is to add an air guide tube 2 outside the axial flow fan. The air guide tube 2 can increase the range of the airflow. At the same time, the axial flow fan is installed in the air guide tube 2, and the depression angle of the air guide tube 2 can be changed, thereby expanding the radiation range.

[0032] The specific pitch angle adjustment principle is as follows: while the rotating disk 4 is used to drive the axial flow fan to rotate, the transmission gear 8 rotates around the fixed gear ring 13 to realize the rotation of the transmission gear 8, and the guide groove 81 on the transmission gear 8 drives the slider 9 to move. The movement of the slider 9 can realize the rotation of the air guide tube 2 around the hinge support shaft 5, thereby realizing the change of the pitch angle. The switching of the pitch angle occurs when the needle roller 14 switches between the inner arc groove 811, the middle arc groove 812 and the outer arc groove 813.

[0033] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore, the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. An axial flow fan with cold wave protection function in a botanical garden, comprising a vertical column (1), an inclined air guide tube (2) is arranged above the column (1), and the axial flow fan is installed in the air guide tube (2). Features: A chassis (3) is fixed to the top of the column (1), a rotating disk (4) is arranged above the chassis (3), and a branch plate (41) is formed on the outer wall of the rotating disk (4) close to the lower end of the air guide tube (2); hinged shafts (5) are fixed to the two side walls of the air guide tube (2), and a side bracket (6) is hinged to the hinged shaft (5) through a bearing, and the lower end of the side bracket (6) is fixed to the rotating disk (4); a vertical fixed pipe column (7) is hinged to the center of the rotating disk (4) through a bearing, and the lower end of the fixed pipe column (7) is plugged and fixed to the chassis (3); a moving gear ring (10) is fixed to the lower end surface of the rotating disk (4), and a driving gear (11) is meshed on the moving gear ring (10); a rotating motor (12) is fixed to the lower end surface of the chassis (3), and the rotating shaft of the rotating motor (12) passes through the chassis (3) and is plugged and fixed in the driving gear (11); A fixed gear ring (13) is fixedly sleeved on a fixed pipe column (7) on the upper side of the rotating disk (4), a transmission gear (8) is meshed on the fixed gear ring (13), the center of the transmission gear (8) is hinged to a fixed support column (19) through a bearing, the lower end of the fixed support column (19) is fixed to the rotating disk (4), and opposite guide rail grooves (81) are formed on the upper and lower end surfaces of the transmission gear (8), the guide rail groove (81) comprises an inner circular arc groove (811), a middle circular arc groove (812) and an outer circular arc groove (813) with gradually increasing radii, and two adjacent circular arc grooves among the inner circular arc groove (811), the middle circular arc groove (812) and the outer circular arc groove (813) are connected by an oblique groove; The upper end surface of the branch plate (41) of the rotating disk (4) is abutted against a slider (9), the slider (9) is hinged with a connecting rod (15) through a pin shaft, the upper end of the connecting rod (15) is hinged with an ear plate (16) through a pin shaft, and the ear plate (16) is fixed to the outer wall of the lower end of the air guide tube (2); two linkage rods (91) are formed on the slider (9), the two linkage rods (91) respectively abut against the upper and lower end surfaces of the transmission gear (8), the end of the linkage rod (91) is plugged and fixed with a vertical needle roller (14), and the needle roller (14) is plugged into the guide groove (81) of the transmission gear (8); a guide groove (92) parallel to the branch plate (41) is formed on the linkage rod (91), a guide plate (17) is plugged into the guide groove (92), and the lower end of the guide plate (17) is plugged and fixed to the branch plate (41); When the rotating disk (4) drives the axial flow fan to rotate, the transmission gear (8) rotates around the fixed gear ring (13), thereby realizing the rotation of the transmission gear. The guide rail groove (81) on the transmission gear drives the slider (9) to move. The movement of the slider can realize the rotation of the air guide tube (2) around the hinge support shaft (5), thereby realizing the change of the pitch angle.

2. The axial flow fan with cold wave protection function in a botanical garden according to claim 1, Features: The transmission gear (8) is located between the slider (9) and the fixed pipe column (7), and a support block (191) is formed at the lower end of the fixed support column (19), and the support block (191) abuts against the lower end surface of the transmission gear (8).

3. The axial flow fan with cold wave protection function in a botanical garden according to claim 1, Features: The arc angle of the inner arc groove (811) on the transmission gear (8) is equal to the arc angle of the middle arc groove (812), and the arc angle of the middle arc groove (812) is equal to the arc angle of the outer arc groove (813).

4. The axial flow fan with cold wave protection function in a botanical garden according to claim 3, Features: The diameter of the transmission gear (8) is greater than three times the diameter of the fixed gear ring (13), and the number of teeth of the transmission gear (8) is greater than three times the number of teeth of the fixed gear ring (13).

5. The axial flow fan with cold wave protection function in a botanical garden according to claim 1, Features: A conductive ring (20) is fixed to the top sleeve of the fixed pipe column (7), and the lower end of the fixed pipe column (7) is inserted into the column (1), and the column (1) is a hollow column.

6. The axial flow fan with cold wave protection function in a botanical garden according to claim 1, Features: The central axis of the rotating disk (4) coincides with the central axis of the chassis (3), and the central axis of the rotating disk (4) coincides with the central axis of the movable gear ring (10). A thrust bearing (21) is arranged between the chassis (3) and the rotating disk (4), and a gap is arranged between the movable gear ring (10) and the chassis (3).

7. The axial flow fan with cold wave protection function in a botanical garden according to claim 1, Features: The air guide tube (2) is composed of an upper cylindrical air inlet tube and a lower conical air outlet tube. The hinged support shaft (5) is welded and fixed on the two opposite side walls of the air inlet tube; the ear plate (16) is welded and fixed on the lower end of the air outlet tube.

8. The axial flow fan with cold wave protection function in a botanical garden according to claim 7, Features: A smoke inlet pipe (22) is plugged and fixed on the air inlet tube of the air guide tube (2).

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