Fan main shaft cooling device

Abstract

The invention relates to the technical field of fans, in particular to a fan spindle cooling device which comprises a fan, and a self-cooling spindle is fixedly mounted on one side of the interior of the fan; according to the technical scheme, cooling liquid can be continuously injected into the self-cooling type main shaft, consumed cooling liquid can be filled in real time through the cooling liquid real-time filling mechanism so as to prevent gaps from being generated in the main shaft, and by means of the technical scheme, the stability of the main shaft is ensured while the service life of the main shaft is prolonged; the problems that when the fan main shaft runs for a long time, cooling liquid is gradually consumed and possibly cannot completely fill the inner space of the fan main shaft, so that the components of the cooling liquid on the two sides in the fan main shaft are different, and finally the stability of the fan main shaft during rotation is affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and in particular to a fan main shaft cooling device. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Fan is China's customary abbreviation for gas compression and gas delivery machinery. The fans usually mentioned include ventilators, blowers, and wind turbines. Fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings for ventilation, dust removal and cooling, ventilation and air induction of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances, drying and selection of grains, wind tunnel wind sources, and inflation and propulsion of hovercraft.

[0003] As the name suggests, the fan main shaft is the rotating shaft located inside the fan for driving the fan blades to rotate. It is an indispensable component when the fan is running. It is responsible for transmitting the rotational power of the motor to the impeller, allowing the impeller to rotate and drive the gas flow.

[0004] However, with the increase of the running time of the fan main shaft, its own temperature will gradually increase. If the fan main shaft is working in a high temperature state for a long time, its aging speed will be accelerated, thereby shortening the service life of the fan main shaft. Moreover, when the fan main shaft is cooled by a water-cooled cooling mechanism, as the use time of the cooling mechanism increases, the coolant inside it will gradually be consumed. As the coolant consumption increases, it may not be able to completely fill the internal space of the fan main shaft, resulting in different coolant amounts on both sides of the fan main shaft, ultimately affecting the stability of the fan main shaft during rotation and causing it to shake. Therefore, it does not meet the existing needs. We have proposed a fan main shaft cooling device for this purpose. Summary of the invention

[0005] The object of the present invention is to provide a fan main shaft cooling device to solve the problem raised in the above background technology that as the running time of the fan main shaft increases, its own temperature will gradually increase. If the fan main shaft works in a high temperature state for a long time, its aging speed will be accelerated, thereby shortening the service life of the fan main shaft. When the fan main shaft is cooled by a water-cooled cooling mechanism, as the use time of the cooling mechanism increases, the coolant inside it will gradually be consumed. As the coolant consumption increases, it may be impossible to completely fill the internal space of the fan main shaft, resulting in different coolant quantities on both sides of the fan main shaft, which ultimately affects the stability of the fan main shaft during rotation and causes it to shake and other problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fan spindle cooling device, comprising a fan, a self-cooling spindle is fixedly installed on one side of the inside of the fan, the self-cooling spindle comprises a hollow tube spindle, a metal sleeve, a water outlet pipe, a cooling box for circulating cooling, a circulating cooling water pump, a return pipe, a stepping motor, a hollow spindle, a sealing tube, a small water wheel, a gear transmission mechanism and a plurality of concave fixed connection brackets, the rear end face of the hollow spindle is connected to the output shaft of the stepping motor through a coupling, the sealing tube is located between the hollow tube spindle and the hollow spindle, the metal sleeve is fixed to the outside of the sealing tube, and the two sides of the inner wall of the metal sleeve are respectively connected to the hollow tube spindle and the hollow spindle through roller bearings, a plurality of the concave fixed connection brackets are arranged in a ring shape on the inner side of the sealing tube, the two ends of the concave fixed connection bracket are respectively fixed to the inner wall of the hollow tube spindle and the hollow spindle, and the inside of the hollow tube spindle, the sealing tube and the hollow spindle all contain cooling liquid;

[0007] The outlet pipe is connected to the lower end surface of the metal sleeve, the lower end surface of the outlet pipe is connected to the circulating cooling cooling box, the circulating cooling water pump is installed with the rear end surface of the circulating cooling cooling box, one end of the return pipe is connected to the upper end surface of the circulating cooling water pump, and the other end of the return pipe is connected to the upper end surface of the metal sleeve, and the outlet pipe, the circulating cooling cooling box, the circulating cooling water pump and the return pipe also contain coolant;

[0008] The small water wheel is located inside the front end of the hollow tube main shaft. When the stepper motor drives the hollow tube main shaft to rotate, the small water wheel can be driven to rotate synchronously through the gear transmission mechanism.

[0009] A real-time coolant filling mechanism is fixedly installed on one side of the upper end surface of the fan, and the real-time coolant filling mechanism includes a coolant filling pipe, a coolant storage shell, a coolant storage tank, a metal pipe, a sealing cap, a metal counterweight, and two return springs. The coolant storage tank is located inside the coolant storage shell, the metal pipe is located inside the coolant storage tank, and the outer surface of the metal pipe is fitted with the inner wall of the coolant storage tank, the sealing cap is installed on the upper side of the outer surface of the metal pipe through a threaded structure, the metal counterweight is located on the upper side of the inside of the metal pipe, the upper end surface of the metal counterweight is fixed to the sealing cap, and the outer surface of the metal counterweight is fitted with the inner wall of the metal pipe, the two return springs are respectively connected to the two sides of the lower end surface of the metal pipe, the coolant filling pipe is connected to the lower end surface of the coolant storage shell and communicates with the interior of the coolant storage tank, the coolant filling pipe, the coolant storage tank and the metal pipe all contain spare coolant, and the lower end surface of the coolant filling pipe is connected to the upper end surface of the metal sleeve.

[0010] Preferably, the self-cooling main shaft further comprises a plurality of L-shaped fixing rods, which are fixed in a ring shape to the outer surface of the metal sleeve, and the surfaces of the L-shaped fixing rods facing the inner wall of the fan are fixed to the inner wall of the fan.

[0011] Preferably, the self-cooling spindle also includes two sealing grooves, which are respectively located on the hollow tube spindle and the opposite surface of the hollow spindle. The interior of the sealing groove is provided with a metal sealing tube that fits with the inner wall and is slidably connected with it, and the surface of the metal sealing tube facing the sealing tube is fixed between the sealing tube.

[0012] Preferably, the gear transmission mechanism includes a roller bearing sleeve, which is arranged on the outside of the front end of the cooling box for circulating cooling through a roller bearing sleeve, and a circle of fixing bracket is fixed on the outer surface of the roller bearing sleeve, and the other end of the fixing bracket is fixed to the inner wall of the fan.

[0013] Preferably, the interior of the roller bearing sleeve is provided with an internal gear ring fixed to the inner wall of the hollow tube main shaft, the internal gear ring is meshed with a gear, the axis of the gear is connected to a gear shaft, the front and rear ends of the gear shaft are both located inside the roller bearing sleeve shell, and the gear shaft located inside the roller bearing sleeve shell is connected to the roller bearing sleeve through a roller bearing.

[0014] Preferably, a synchronous rotating shaft is provided below the gear rotating shaft, and the gear rotating shaft and the synchronous rotating shaft are connected in series through a synchronous chain, and a waterwheel supporting bracket fixed to the outer surface of the roller bearing sleeve is provided on both sides of the rear end of the synchronous rotating shaft, and the small waterwheel is located between the two waterwheel supporting brackets.

[0015] Preferably, the axis of the small waterwheel is connected to a gear shaft that moves laterally and passes through two waterwheel supporting brackets, and a second bevel gear is fixedly sleeved on one side of the outer surface of the gear shaft, and the second bevel gear is meshed with a first bevel gear fixed to the outer surface of the synchronous shaft.

[0016] Preferably, the real-time coolant filling mechanism also includes two guide rods, the two return springs are respectively sleeved on the outer surfaces of the two guide rods, the upper end surfaces of the guide rods are fixed to the lower end surface of the metal tube, and the bottom end of the guide rod is movably inserted into the interior of the coolant storage shell.

[0017] Preferably, a metal ring is provided on the lower fixed sleeve of the outer surface of the metal tube, a sealing ring is fixed on the upper end surface of the metal ring, an annular sealing groove located inside the coolant storage shell is provided on the outer side of the sealing ring, the outer surface of the sealing ring is fitted with the inner wall of the annular sealing groove, and the sealing ring is slidably connected to the annular sealing groove.

[0018] Preferably, an impeller is provided on a fixed sleeve on one side of the outer surface of the hollow tube main shaft, and the hollow tube main shaft and the impeller are fixed by bolts.

[0019] The present invention drives the hollow main shaft directly connected to the stepper motor to rotate when the equipment needs to be used. When the hollow main shaft rotates, the hollow tube main shaft connected to the hollow tube main shaft through a plurality of concave fixed connection brackets will rotate together with it. The rotating hollow tube main shaft can drive the impeller fixedly sleeved on the outer surface of the hollow tube main shaft to rotate, so that the fan can work normally. When the stepper motor is started, the circulating cooling cooling box and the circulating cooling water pump are started. The circulating cooling cooling box can cool the coolant inside it, and the circulating cooling water pump can extract the coolant inside the circulating cooling cooling box after being cooled, and the coolant is refluxed through the reflux pump. The pipe injects it into the inside of the hollow tube spindle, the hollow spindle and the hollow spindle, and when the coolant located inside the circulating cooling cooling box is extracted by the circulating cooling water pump, under the action of gravity, the coolant located inside the sealed pipe will flow to the inside of the circulating cooling cooling box through the outlet pipe connected to the lower end surface of the metal sleeve, so as to complete the circulation flow of the coolant, and the cooled coolant injected from the return pipe into the hollow tube spindle, the hollow spindle and the sealed pipe can cool the hollow spindle and the hollow tube spindle to prevent their temperature from being too high. The above technical solution increases the service life of the spindle inside the equipment.

[0020] The present invention also has spare coolant inside the coolant filling tube, the coolant storage tank and the metal tube, and the coolant filling tube is connected to the metal sleeve, and the upper end face of the metal tube is threadedly connected to a sealing cap whose lower end face is fixed with a metal counterweight. When a part of the circulating coolant is consumed as the use time increases, resulting in the inability to completely fill the internal space of the hollow tube main shaft, the hollow main shaft and the sealing tube, under the pressure of the metal counterweight, a part of the spare coolant inside the coolant filling tube will automatically flow into the interior of the sealing tube under the pressure of the metal counterweight, so as to replenish the consumed coolant, and the pressure provided by the metal counterweight can prevent the flowing coolant from flowing back into the coolant filling tube, resulting in a gap inside the self-cooling spindle, thereby affecting its rotational stability. The above technical solution can fill the consumed coolant in real time, so as to prevent the difference in coolant quantity on both sides of the hollow tube main shaft, the hollow main shaft and the sealing tube from ultimately affecting the stability of the fan main shaft during rotation and causing it to shake. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2This is a front view of the internal structure of the present invention without the impeller, the roller bearing sleeve and the fixed bracket;

[0023] Figure 3 For the present invention Figure 2 A magnified view of the structure at center A;

[0024] Figure 4 It is a side view of the internal structure of the present invention;

[0025] Figure 5 For the present invention Figure 4 A magnified view of the structure at B in the middle;

[0026] Figure 6 For the present invention Figure 5 Enlarged view of the structure at C in the middle. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] See also Figures 1 to 6 The present invention provides a fan spindle cooling device, comprising a fan 1, a self-cooling spindle is fixedly installed on one side of the fan 1, the self-cooling spindle comprises a hollow tube spindle 3, a metal sleeve 5, a water outlet pipe 6, a cooling box 7 for circulating cooling, a circulating cooling water pump 8, a return pipe 9, a stepping motor 11, a hollow spindle 12, a sealing pipe 13, a small water wheel 25, a gear transmission mechanism and a plurality of concave fixed connection brackets 14, the rear end surface of the hollow spindle 12 is connected to the output shaft of the stepping motor 11 through a coupling, and the sealing pipe 13 is located between the hollow tube main shaft 3 and the hollow main shaft 12, the metal sleeve 5 is fixed to the outside of the sealing tube 13, and the two sides of the inner wall of the metal sleeve 5 are respectively connected to the hollow tube main shaft 3 and the hollow main shaft 12 through roller bearings, a plurality of concave fixed connection brackets 14 are arranged in a ring shape on the inner side of the sealing tube 13, and the two ends of the concave fixed connection brackets 14 are respectively fixed to the inner walls of the hollow tube main shaft 3 and the hollow main shaft 12, and the insides of the hollow tube main shaft 3, the sealing tube 13 and the hollow main shaft 12 all contain coolant 15;

[0029] The water outlet pipe 6 is connected to the lower end surface of the metal sleeve 5, and the lower end surface of the water outlet pipe 6 is connected to the cooling box 7 for circulating cooling. The circulating cooling water pump 8 is installed with the rear end surface of the cooling box 7 for circulating cooling. One end of the return pipe 9 is connected to the upper end surface of the circulating cooling water pump 8, and the other end of the return pipe 9 is connected to the upper end surface of the metal sleeve 5. The water outlet pipe 6, the cooling box 7 for circulating cooling, the circulating cooling water pump 8 and the return pipe 9 also contain coolant 15.

[0030] Furthermore, an impeller 4 is fixedly sleeved on one side of the outer surface of the hollow tube main shaft 3, and the hollow tube main shaft 3 and the impeller 4 are fixed by bolts; when the equipment needs to be used, the hollow tube main shaft 12 directly connected thereto is driven to rotate by the stepper motor 11, and when the hollow tube main shaft 12 rotates, the hollow tube main shaft 3 connected thereto by a plurality of concave fixed connection brackets 14 will rotate therewith, and the rotating hollow tube main shaft 3 can drive the impeller 4 fixedly sleeved on the outer surface of the hollow tube main shaft 3 to rotate, so that the fan 1 can work normally, and when the stepper motor 11 is started, the circulating cooling cooling box 7 and the circulating cooling water pump 8 are started, and the circulating cooling cooling box 7 can cool the coolant 15 located inside it, and the circulating cooling water pump 8 can extract the coolant located in the circulating cooling cooling box 7 The cooled coolant 15 is poured into the hollow tube spindle 3, the hollow spindle 12 and the hollow spindle 12 through the return pipe 9, and when the coolant 15 located in the circulating cooling cooling box 7 is extracted by the circulating cooling water pump 8, the coolant 15 located in the sealed tube 13 will flow to the inside of the circulating cooling cooling box 7 through the outlet pipe 6 connected to the lower end surface of the metal sleeve 5 under the action of gravity, so as to complete the circulation of the coolant 15. The cooled coolant 15 poured into the hollow tube spindle 3, the hollow spindle 12 and the sealed tube 13 from the return pipe 9 can cool the hollow spindle 12 and the hollow tube spindle 3 to prevent their temperature from being too high. The above technical solution improves the service life of the spindle inside the equipment.

[0031] See also Figures 1 to 6 The self-cooling main shaft of the present invention also includes a plurality of L-shaped fixing rods 10, which are fixed in a ring shape on the outer surface of the metal sleeve 5, and the surface of the L-shaped fixing rods 10 facing the inner wall of the fan 1 is fixed to the inner wall of the fan 1; by fixing the plurality of L-shaped fixing rods 10 on the outer surface of the metal sleeve 5, the metal sleeve 5 can be prevented from rotating together due to the rotational force of the hollow main shaft 12, thereby causing the return pipe 9 and the outlet pipe 6 connected thereto to be entangled on its outer surface.

[0032] Specifically, the self-cooling spindle also includes two sealing grooves 27, and the two sealing grooves 27 are respectively located on the opposite surfaces of the hollow tube spindle 3 and the hollow spindle 12. The interior of the sealing groove 27 is provided with a metal sealing tube 28 that fits with the inner wall and is slidably connected thereto, and the surface of the metal sealing tube 28 facing the sealing tube 13 is fixed to the sealing tube 13; the two sealing grooves 27 and the metal sealing tube 28 can improve the sealing performance of the connection between the sealing tube 13 and the hollow tube spindle 3 and the hollow spindle 12, thereby preventing the coolant 15 located inside the hollow tube spindle 3, the hollow spindle 12 and the sealing tube 13 from leaking through the connection between the sealing tube 13 and the hollow tube spindle 3 or the hollow spindle 12.

[0033] The small water wheel 25 is located inside the front end of the hollow tube main shaft 3. When the stepper motor 11 drives the hollow tube main shaft 3 to rotate, the small water wheel 25 can be synchronously driven to rotate through the gear transmission mechanism; the gear transmission mechanism includes a roller bearing sleeve 16, and the roller bearing sleeve 16 is arranged on the outside of the front end of the cooling box 7 for circulating cooling through the roller bearing sleeve. A circle of fixing brackets 29 are fixed on the outer surface of the roller bearing sleeve 16, and the other end of the fixing bracket 29 is fixed to the inner wall of the fan 1; the roller bearing sleeve 16 can be prevented from rotating by fixing the fixing bracket 29 on the outer surface of the roller bearing sleeve 16.

[0034] The roller bearing sleeve 16 is provided with an inner gear ring 18 fixed to the inner wall of the hollow tube main shaft 3, the inner gear ring 18 is meshed with a gear 19, the axis of the gear 19 is connected to a gear shaft 20, the front and rear ends of the gear shaft 20 are both located inside the outer shell of the roller bearing sleeve 16, and the gear shaft 20 located inside the outer shell of the roller bearing sleeve 16 is connected to the roller bearing sleeve 16 through a roller bearing; a synchronous shaft 21 is provided below the gear shaft 20, and the gear shaft 20 and the synchronous shaft 21 are connected in series through a synchronous chain 17, and the synchronous shaft A waterwheel supporting bracket 26 fixed to the outer surface of the roller bearing sleeve 16 is provided on both sides of the rear end of 21, and the small waterwheel 25 is located between the two waterwheel supporting brackets 26; when the hollow tube main shaft 3 is driven to rotate by the stepper motor 11, the inner gear ring 18 fixed on its inner wall will rotate therewith, and the rotating inner gear ring 18 can drive the gear 19 meshing therewith and the gear shaft 20 connected to the axis of the gear 19 to rotate, and the rotating gear shaft 20 can drive the synchronous shaft 21 connected in series with it through the synchronous chain 17 to rotate.

[0035] Please continue reading Figures 1 to 6 The axis of the small waterwheel 25 is connected to a gear shaft 24 that moves laterally and passes through two waterwheel supporting brackets 26. A second bevel gear 23 is fixedly sleeved on one side of the outer surface of the gear shaft 24, and the second bevel gear 23 is meshed with a first bevel gear 22 fixed to the outer surface of the synchronous shaft 21. The small waterwheel 25 can be fixed by two waterwheel supporting brackets 26 located on both sides of the rear end of the synchronous shaft 21.

[0036] When the synchronous shaft 21 rotates, the first bevel gear 22 fixedly mounted on the outer surface of the synchronous shaft 21 and the second bevel gear 23 meshing with the first bevel gear 22 will rotate synchronously therewith. The rotating second bevel gear 23 can drive the gear shaft 24 connected to the axis of the second bevel gear 23 and the small waterwheel 25 fixedly mounted on the outer surface of the gear shaft 24 to rotate. When the impeller 4 fixedly mounted on the outer surface of the hollow tube main shaft 3 is driven by the stepping motor 11 to rotate and work normally, the small waterwheel 25 will rotate synchronously therewith. The water wheel supporting bracket 26 rotates counterclockwise, thereby providing a thrust for the coolant 15 located on the lower side of the hollow tube main shaft 3. The thrust can push the coolant 15 located inside the front end of the hollow tube main shaft 3 toward the water outlet pipe 6. The above technical solution can prevent the coolant 15 located inside the front end of the hollow tube main shaft 3 from being too far away from the water outlet pipe 6 and thus being unable to flow out through the water outlet pipe 6, and ultimately only being able to stop at the original place and gradually heating up.

[0037] A coolant real-time filling mechanism 2 is fixedly installed on one side of the upper end surface of the fan 1. The coolant real-time filling mechanism 2 includes a coolant filling pipe 201, a coolant storage shell 202, a coolant storage tank 203, a metal pipe 204, a sealing cap 205, a metal counterweight 206, and two return springs 208. The coolant storage tank 203 is located inside the coolant storage shell 202, the metal pipe 204 is located inside the coolant storage tank 203, and the outer surface of the metal pipe 204 is in contact with the inner wall of the coolant storage tank 203. The sealing cap 205 is installed on the upper side of the outer surface of the metal pipe 204 through a threaded structure. The metal counterweight 206 is provided with a sealing cap 205. The weight block 206 is located on the upper side of the metal tube 204. The upper end surface of the metal weight block 206 is fixed to the sealing cap 205, and the outer surface of the metal weight block 206 is in contact with the inner wall of the metal tube 204. Two return springs 208 are respectively connected to the two sides of the lower end surface of the metal tube 204. The coolant filling pipe 201 is connected to the lower end surface of the coolant storage shell 202 and communicates with the interior of the coolant storage tank 203. The coolant filling pipe 201, the coolant storage tank 203 and the metal tube 204 all contain spare coolant 212, and the lower end surface of the coolant filling pipe 201 is connected to the upper end of the metal sleeve 5. When the equipment is running for a long time, part of the circulating coolant 15 is consumed, which makes it impossible to completely fill the internal space of the hollow tube spindle 3, the hollow spindle 12 and the sealing tube 13. When a gap is generated inside the hollow tube spindle 3, the hollow spindle 12 or the sealing tube 13, under the weight of the metal counterweight block 206, the metal counterweight block 206 as a whole and the metal tube 204 connected to it through the sealing cap 205 will move downward for a distance. The downward moving metal counterweight block 206 can generate a downward pressure on the spare coolant 212, and the coolant filling can be filled with the coolant. A portion of the spare coolant 212 inside the tube 201 is pushed into the inside of the sealed tube 13 to replenish the consumed coolant 15, and the pressure provided by the metal counterweight 206 can prevent the flowing coolant 15 from flowing back into the coolant filling tube 201, causing a gap to be generated inside the self-cooling spindle, thereby affecting its rotation stability. The above technical solution can fill the consumed coolant 15 in real time, thereby preventing the difference in coolant amounts on both sides of the hollow tube spindle 3, the hollow spindle 12 and the sealed tube 13, which ultimately affects the stability of the fan spindle during rotation and causes it to shake.

[0038] Please continue reading Figures 1 to 6The real-time coolant filling mechanism 2 also includes two guide rods 207, and two return springs 208 are respectively sleeved on the outer surfaces of the two guide rods 207. The upper end surface of the guide rod 207 is fixed to the lower end surface of the metal tube 204, and the bottom end of the guide rod 207 is movably inserted into the interior of the coolant storage shell 202; when the metal tube 204 moves downward, it will squeeze the two return springs 208 connected to it. When the spare coolant 212 needs to be replenished, the sealing cap 205 is removed, and then the sealing cap 205 and the metal counterweight 206 are taken down. When the metal counterweight 206 is taken down, the reaction force of the squeezed return spring 208 can push the metal tube 204 back to its original position, and then the spare coolant 212 is replenished. When the spare coolant 212 is replenished, the sealing cap 205 is installed again through the threaded structure. It should be noted here that the upper end surface of the replenished spare coolant 212 can contact the lower end surface of the metal counterweight 206.

[0039] A metal ring 209 is fixedly provided on the lower side of the outer surface of the metal tube 204, and a sealing ring 210 is fixedly provided on the upper end surface of the metal ring 209. An annular sealing groove 211 located inside the coolant storage shell 202 is provided on the outer side of the sealing ring 210. The outer surface of the sealing ring 210 fits with the inner wall of the annular sealing groove 211, and the sealing ring 210 is slidingly connected to the annular sealing groove 211. The sealing ring 210 and the annular sealing groove 211 can improve the sealing performance of the connection between the metal tube 204 and the coolant storage tank 203, thereby preventing the spare coolant 212 from leaking from the connection between the metal tube 204 and the coolant storage tank 203.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A fan main shaft cooling device, characterized in that: The invention comprises a fan, wherein a self-cooling spindle is fixedly installed on one side inside the fan, and the self-cooling spindle comprises a hollow tube spindle, a metal sleeve, a water outlet pipe, a cooling box for circulating cooling, a water pump for circulating cooling, a return pipe, a stepping motor, a hollow spindle, a sealing tube, a small water wheel, a gear transmission mechanism and a plurality of concave fixed connection brackets, the rear end face of the hollow spindle is connected to the output shaft of the stepping motor through a coupling, the sealing tube is located between the hollow tube spindle and the hollow spindle, the metal sleeve is fixed to the outside of the sealing tube, and the two sides of the inner wall of the metal sleeve are respectively connected to the hollow tube spindle and the hollow spindle through roller bearings, a plurality of the concave fixed connection brackets are arranged in a ring shape on the inner side of the sealing tube, the two ends of the concave fixed connection bracket are respectively fixed to the inner walls of the hollow tube spindle and the hollow spindle, and the insides of the hollow tube spindle, the sealing tube and the hollow spindle all contain cooling liquid; The outlet pipe is connected to the lower end surface of the metal sleeve, the lower end surface of the outlet pipe is connected to the circulating cooling cooling box, the circulating cooling water pump is installed with the rear end surface of the circulating cooling cooling box, one end of the return pipe is connected to the upper end surface of the circulating cooling water pump, and the other end of the return pipe is connected to the upper end surface of the metal sleeve, and the outlet pipe, the circulating cooling cooling box, the circulating cooling water pump and the return pipe also contain coolant; The small water wheel is located inside the front end of the hollow tube main shaft. When the stepper motor drives the hollow tube main shaft to rotate, the small water wheel can be driven to rotate synchronously through the gear transmission mechanism. A real-time coolant filling mechanism is fixedly installed on one side of the upper end surface of the fan, and the real-time coolant filling mechanism includes a coolant filling pipe, a coolant storage shell, a coolant storage tank, a metal pipe, a sealing cap, a metal counterweight, and two return springs. The coolant storage tank is located inside the coolant storage shell, the metal pipe is located inside the coolant storage tank, and the outer surface of the metal pipe is fitted with the inner wall of the coolant storage tank, the sealing cap is installed on the upper side of the outer surface of the metal pipe through a threaded structure, the metal counterweight is located on the upper side of the inside of the metal pipe, the upper end surface of the metal counterweight is fixed to the sealing cap, and the outer surface of the metal counterweight is fitted with the inner wall of the metal pipe, the two return springs are respectively connected to the two sides of the lower end surface of the metal pipe, the coolant filling pipe is connected to the lower end surface of the coolant storage shell and communicates with the interior of the coolant storage tank, the coolant filling pipe, the coolant storage tank and the metal pipe all contain spare coolant, and the lower end surface of the coolant filling pipe is connected to the upper end surface of the metal sleeve.

2. The fan main shaft cooling device according to claim 1, characterized in that: The self-cooling spindle also includes a plurality of L-shaped fixing rods, which are fixed to the outer surface of the metal sleeve in a ring shape, and the surfaces of the L-shaped fixing rods facing the inner wall of the fan are fixed to the inner wall of the fan.

3. The fan main shaft cooling device according to claim 1, characterized in that: The self-cooling spindle also includes two sealing grooves, which are respectively located on the opposite surfaces of the hollow tube spindle and the hollow spindle. The interior of the sealing groove is provided with a metal sealing tube that fits with the inner wall and is slidably connected with it, and the surface of the metal sealing tube facing the sealing tube is fixed between the sealing tube.

4. The fan main shaft cooling device according to claim 1, characterized in that: The gear transmission mechanism includes a roller bearing sleeve, which is arranged on the outside of the front end of the cooling box for circulating cooling through the roller bearing sleeve. A circle of fixing brackets is fixed on the outer surface of the roller bearing sleeve, and the other end of the fixing bracket is fixed to the inner wall of the fan.

5. The fan main shaft cooling device according to claim 4, characterized in that: The interior of the roller bearing sleeve is provided with an inner gear ring fixed to the inner wall of the hollow tube main shaft, the inner gear ring is meshed with a gear, the axis of the gear is connected to a gear shaft, the front and rear ends of the gear shaft are both located inside the roller bearing sleeve shell, and the gear shaft located inside the roller bearing sleeve shell is connected to the roller bearing sleeve through a roller bearing.

6. The fan main shaft cooling device according to claim 5, characterized in that: A synchronous rotating shaft is provided below the gear rotating shaft, and the gear rotating shaft and the synchronous rotating shaft are connected in series through a synchronous chain. A waterwheel supporting bracket fixed to the outer surface of the roller bearing sleeve is provided on both sides of the rear end of the synchronous rotating shaft, and the small waterwheel is located between the two waterwheel supporting brackets.

7. The fan main shaft cooling device according to claim 6, characterized in that: The axis of the small waterwheel is connected to a gear shaft that moves laterally and passes through two waterwheel supporting brackets. A second bevel gear is fixedly sleeved on one side of the outer surface of the gear shaft, and the second bevel gear is meshed with a first bevel gear fixed and sleeved on the outer surface of the synchronous shaft.

8. The fan main shaft cooling device according to claim 1, characterized in that: The coolant real-time filling mechanism also includes two guide rods, and the two return springs are respectively sleeved on the outer surfaces of the two guide rods. The upper end surface of the guide rod is fixed to the lower end surface of the metal tube, and the bottom end of the guide rod is movably inserted into the interior of the coolant storage shell.

9. The fan main shaft cooling device according to claim 8, characterized in that: A metal ring is fixedly mounted on the lower side of the outer surface of the metal tube, a sealing ring is fixedly mounted on the upper end surface of the metal ring, an annular sealing groove is disposed on the outer side of the sealing ring and is located inside the coolant storage shell, the outer surface of the sealing ring is fitted with the inner wall of the annular sealing groove, and the sealing ring is slidably connected to the annular sealing groove.

10. The fan main shaft cooling device according to claim 1, characterized in that: An impeller is fixedly sleeved on one side of the outer surface of the hollow tube main shaft, and the hollow tube main shaft and the impeller are fixed by bolts.

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