A vertical pump bearing lubrication and cooling device

Abstract

The present invention relates to the technical field of vertical pump bearing lubrication, and specifically relates to a vertical pump bearing lubrication and cooling device. It includes a shaft, a bearing bracket, an outer sleeve, a bearing gland, an upper bearing, a shaft sleeve, a lower bearing, and a spiral sleeve. The spiral sleeve is connected to the shaft, and the upper bearing, the shaft sleeve, and the lower bearing are connected to the spiral sleeve. The spiral sleeve is provided with a swirling oil section, and the swirling oil section is provided with trapezoidal thread I and trapezoidal thread II. There is an oil collecting groove between trapezoidal thread I and trapezoidal thread II. The thread helix direction of trapezoidal thread I is opposite to that of trapezoidal thread II. The oil outlet barrel nozzle is provided with an oil outlet hole, and the gland nozzle is provided with an oil inlet hole. An oil outlet pipe is connected between the oil outlet hole and the oil inlet hole. The present invention solves the problem that it is difficult to lubricate the upper bearing of the vertical pump, and at the same time can meet the lubrication of the bearing at low speeds. It has an air-cooling heat dissipation function, effectively reduces the temperature of the outer sleeve and the bearing, provides a good environment for the operation of the bearing, and ensures the safe operation of the vertical pump.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical pump bearing lubrication, and specifically to a vertical pump bearing lubrication and cooling device. Background Art

[0002] Vertical pumps such as submerged pumps and long shaft distances are widely used. However, due to the structural characteristics of vertical pumps, the cooling and lubrication of the bearing body have always been a problem to be solved.

[0003] The prior art patent number "CN201020165890.9" and the invention patent application with the patent name "New air-cooled structure high-temperature molten salt pump" disclose a new air-cooled structure high-temperature molten salt pump, which mainly uses the air-cooled heat dissipation principle to dissipate heat from the bearing. However, this prior art mainly cools the outer shell of the bearing body, and the lubrication of the bearing still relies on an external oil replenisher.

[0004] The prior art patent number "CN200810238757.9" and the invention patent application with the patent name "Vertical pump bearing automatic lubrication device" disclose a vertical pump bearing automatic lubrication device. This prior art uses a lift oil pump delivery ring to lubricate through the inner cavity of the shaft sleeve. However, this lubrication method is not applicable to variable frequency working conditions. When the high speed is relatively high, oil leakage may occur; when the low speed is low, the automatic lubrication device cannot suck and send the oil upward, and the bearing cannot be lubricated. This is the defect of the self-lubricating structure of the prior art vertical pump. Summary of the Invention

[0005] The purpose of the present invention is to provide a vertical pump bearing lubrication and cooling device to solve the problem of difficult lubrication of the upper bearing in the oil-lubricated bearing of the vertical pump and the cooling problem at the bearing of the vertical pump, so as to provide a good environment for the bearing to operate and ensure the safe operation of the vertical pump.

[0006] To solve the above technical problems, a vertical pump bearing lubrication and cooling device of the present invention includes a shaft, a bearing bracket, an outer sleeve, a bearing gland, an upper bearing, a shaft sleeve, a lower bearing, and a spiral sleeve. The spiral sleeve is connected to the shaft, the upper bearing, the shaft sleeve, and the lower bearing are connected to the spiral sleeve, the bearing bracket is connected to the lower end of the lower bearing, the bearing gland is connected to the upper end of the upper bearing, the outer sleeve is connected between the bearing bracket and the bearing gland, the upper bearing and the lower bearing are arranged inside the outer sleeve. The spiral sleeve is provided with an upper bearing installation section, a threaded section, a lower bearing installation section, and an oil swirling section. The upper bearing installation section is arranged above the threaded section, the threaded section is arranged above the lower bearing installation section, the lower bearing installation section is arranged above the oil swirling section. The upper bearing is connected to the upper bearing installation section, the lower bearing is connected to the lower bearing installation section, the shaft sleeve is arranged between the upper bearing and the lower bearing, and the shaft sleeve is threadedly connected to the threaded section. The oil swirling section is provided with trapezoidal thread I and trapezoidal thread II, and there is an oil collecting groove between trapezoidal thread I and trapezoidal thread II. The oil collecting groove is provided in a circle. The thread helix direction of trapezoidal thread I is opposite to that of trapezoidal thread II. An oil outlet cylinder is connected to the bearing bracket. The oil outlet cylinder is of a connecting pipe flange structure. The oil outlet cylinder is inserted into the bearing bracket, and the oil outlet cylinder flange is connected to the bearing bracket flange. The oil swirling section is inserted into the oil outlet cylinder connecting pipe, and there is a gap between the oil swirling section and the inner diameter of the oil outlet cylinder connecting pipe. The oil outlet cylinder connecting pipe is provided with an oil collecting cavity. The oil collecting cavity is provided in a circle. The oil collecting cavity is communicated with the oil collecting groove. The oil outlet cylinder connecting pipe is provided with an oil outlet hole. The bearing gland includes a gland flange and a gland connecting pipe. The gland connecting pipe is provided with an oil inlet hole. The oil inlet hole is arranged above the upper bearing. An oil outlet pipe is connected between the oil outlet hole and the oil inlet hole. The two ends of the oil outlet pipe are respectively connected to the oil outlet hole and the oil inlet hole. The oil collecting groove, the oil collecting cavity, the oil outlet pipe, and the oil inlet hole are communicated. The gland connecting pipe is provided with overflow grooves. There are multiple overflow grooves, and the multiple overflow grooves are evenly distributed in a circle. When the shaft rotates, the spiral sleeve rotates together with the shaft. Since the thread helix direction of trapezoidal thread I is opposite to that of trapezoidal thread II, trapezoidal thread I and trapezoidal thread II will transport the lubricating oil inside the outer sleeve to the oil collecting groove during the rotation process. It should be noted that the thread helix direction settings of trapezoidal thread I and trapezoidal thread II are related to the rotation direction of the shaft. For example, when the shaft rotates counterclockwise, trapezoidal thread I is left-handed and trapezoidal thread II is right-handed. If the setting is incorrect, the lubricating oil will be thrown to the outside of trapezoidal thread I and trapezoidal thread II and will not enter the oil collecting groove. As the shaft rotates continuously, the lubricating oil in the oil collecting groove enters the oil outlet pipe through the oil collecting cavity, is transported from the oil outlet pipe to the oil inlet hole at a high place, and the lubricating oil flows out from the oil inlet hole and enters above the upper bearing, realizing the lubrication of the upper bearing. The structural design is ingenious. By using two trapezoidal threads with opposite thread helix directions and the rotation of the shaft, the lubricating oil is transported from a low place to a high place. The setting of the overflow grooves enables the lubricating oil not to accumulate above the upper bearing, and the excess lubricating oil can flow out from the overflow grooves.

[0007] Furthermore, an oil baffle sleeve is connected to the oil outlet barrel. The oil baffle sleeve is of a flange pipe connection structure and is inserted into the oil outlet barrel. The flange of the oil baffle sleeve is connected to the flange of the oil outlet pipe. The connecting pipe of the oil baffle sleeve is connected between the lower part of the spiral sleeve and the shaft, and a gap is formed between the connecting pipe of the oil baffle sleeve and the shaft. The insertion height of the connecting pipe of the oil baffle sleeve is greater than the liquid level of the lubricating oil inside the outer sleeve. A drain pipe is also provided on the flange of the oil baffle sleeve. The oil baffle sleeve and the shaft form a static seal to prevent the lubricating oil from overflowing.

[0008] Furthermore, an oil collecting tray is connected to the spiral sleeve. The oil collecting tray is arranged above the upper bearing. The oil collecting tray includes a bottom ring and a side baffle. The side baffle is arranged around the outer side of the bottom ring for one week, and oil leakage holes are provided on the bottom ring. The oil collecting tray can collect the lubricating oil conveyed by the oil outlet pipe when the shaft rotates normally at high speed. When the working condition of the pump changes and the shaft is at a low speed, the spiral sleeve is not sufficient to convey the lubricating oil above the upper bearing. At this time, the lubricating oil collected on the oil collecting tray is used for short-term lubrication. The setting of the oil leakage holes is to make the lubricating oil collected on the oil collecting tray drip.

[0009] Furthermore, a plurality of oil leakage holes are provided, and the plurality of oil leakage holes are circumferentially and evenly distributed around the center of the bottom ring. The setting of the plurality of oil leakage holes enables the lubricating oil collected on the oil collecting tray to drip more smoothly, and also prevents the normal operation of the upper bearing from being affected due to the surface tension of the lubricating oil causing a certain oil leakage hole to be unable to leak oil.

[0010] Furthermore, an oil baffle is connected to the spiral sleeve. The oil baffle is arranged above the oil collecting tray, and the diameter of the oil baffle is ≥ the diameter of the oil collecting tray. The setting of the oil baffle effectively blocks the lubricating oil conveyed by the oil outlet pipe from overflowing the bearing gland at high speed.

[0011] Furthermore, it also includes a fan cover and a fan. The fan is arranged above the outer sleeve. The fan base is connected to the top end of the spiral sleeve. The fan cover is in the shape of a cylinder with an opening downward, and the fan and the outer sleeve are connected inside the fan cover. The rotation of the fan realizes air cooling for the outer sleeve, the components inside the outer sleeve, and the lubricating oil inside the outer sleeve. The fan cover ensures that the air flow generated by the fan passes through the outer sleeve, improving the cooling efficiency.

[0012] Furthermore, a support seat is provided between the fan cover and the outer sleeve. One end of the support seat is connected to the outer wall of the outer sleeve, and a screw hole is provided at the other end of the support seat. A through hole is provided on the fan cover, and the fan cover is connected to the support seat by screws. The screws pass through the through holes and are threadedly connected to the screw holes. A plurality of support seats are provided, and the plurality of support seats are circumferentially and evenly distributed around the center of the outer sleeve. A plurality of through holes are provided, and the plurality of through holes are circumferentially and evenly distributed around the center of the fan cover. The support seat is mainly used for the installation of the fan cover, making the installation and disassembly of the fan cover convenient.

[0013] Furthermore, heat dissipation fins are provided on the outer wall of the jacket. The heat dissipation fins are arranged radially. There are multiple heat dissipation fins, and the multiple heat dissipation fins are evenly distributed circumferentially around the center of the jacket. An air-cooling flow channel is formed between every two heat dissipation fins. The arrangement of the heat dissipation fins and the air-cooling flow channel enable better heat exchange between the inside of the jacket and the outside, further improving the heat dissipation effect.

[0014] Furthermore, the oil outlet pipe is composed of two side pipes and a bottom pipe to form a U shape. The two side pipes of the oil outlet pipe respectively penetrate the jacket, and the bottom pipe of the oil outlet pipe is placed in the air-cooling flow channel. The bottom pipe of the oil outlet pipe being placed in the air-cooling flow channel effectively air-cools the lubricating oil in the oil outlet pipe during the process of lubricating oil transportation.

[0015] Furthermore, an oil cup, a breather cap, and an oil level gauge are connected to the jacket. The setting of the oil cup 9 facilitates the addition of lubricating oil. The setting of the oil level gauge 19 is for checking the lubricating oil level, and the breather cap 16 prevents air from being trapped due to oil replenishment and temperature difference.

[0016] The beneficial effects of the present invention are as follows: It includes a shaft, a bearing housing, a jacket, a bearing gland, an upper bearing, a shaft sleeve, a lower bearing, and a spiral sleeve. The spiral sleeve is connected to the shaft, the upper bearing, the shaft sleeve, and the lower bearing are connected to the spiral sleeve. A lubricating oil swirling section is provided on the spiral sleeve. Trapezoidal thread I and trapezoidal thread II are provided on the lubricating oil swirling section. An oil collecting groove is provided between trapezoidal thread I and trapezoidal thread II. The oil collecting groove is provided in a circle. The thread helix direction of trapezoidal thread I is opposite to the thread helix direction of trapezoidal thread II. An oil outlet barrel is connected to the bearing housing. An oil collecting cavity is provided on the oil outlet barrel connecting pipe. The oil collecting cavity is communicated with the oil collecting groove. An oil outlet hole is provided on the oil outlet barrel connecting pipe, and an oil inlet hole is provided on the gland connecting pipe. An oil outlet pipe is connected between the oil outlet hole and the oil inlet hole. The present invention uses trapezoidal threads with opposite thread helix directions at both ends to achieve the transportation of lubricating oil from low to high, solves the problem that it is difficult to lubricate the upper bearing of a vertical pump, and at the same time can meet the lubrication of the bearing at low rotational speeds. In addition, it also has an air-cooling heat dissipation function, effectively reducing the temperature of the jacket and the bearing, providing a good environment for the operation of the bearing, and ensuring the safe operation of the vertical pump. Description of the Drawings

[0017] Figure 1 It is a cross-sectional view of the overall structure of the present invention;

[0018] Figure 2 It is a cross-sectional view of the spiral sleeve of the present invention;

[0019] Figure 3 It is a cross-sectional view of the bearing gland of the present invention;

[0020] Figure 4 For the present invention Figure 1 Partial enlarged view Figure Ⅰ ;

[0021] Figure 5 For the present invention Figure 1 Partial enlarged viewFigure Ⅱ ;

[0022] Figure 6 Schematic diagram of the ventilation and heat dissipation structure of the present invention;

[0023] Figure 7 of the present invention Figure 6 A - A cross - sectional view;

[0024] Figure 8 of the present invention Figure 7 partial enlarged view Figure Ⅲ ;

[0025] Figure 9 Schematic diagram of the lubricating oil circuit circulation of the present invention.

[0026] In the figure: 1. Spiral sleeve; 101. Upper bearing installation section; 102. Thread section; 103. Lower bearing installation section; 104. Oil - swirling section; 1041. Trapezoidal thread I; 1042. Trapezoidal thread II; 1043. Oil - collecting groove; 2. Drain pipe; 3. Oil - retaining sleeve; 4. Oil - outlet barrel; 401. Oil - outlet hole; 5. Bearing bracket; 6. Oil - outlet pipe; 7. Outer sleeve; 8. Heat sink; 9. Oil cup; 10. Fan cover; 1001. Through - hole; 11. Fan; 12. Bearing gland; 1201. Gland flange; 1202. Gland nozzle; 1203. Oil - inlet hole; 1204. Overflow groove; 13. Oil - collecting pan; 1301. Bottom ring; 1302. Side baffle; 1303. Oil - leakage hole; 14. Oil - baffle plate; 15. Upper bearing; 16. Breather cap; 17. Bush; 18. Lower bearing; 19. Oil level gauge; 20. Shaft; 21. Oil - collecting cavity; 22. Support seat; 2201. Screw hole. Detailed implementation manners

[0027] As Figures 1-5As shown in the figure, a vertical pump bearing lubrication and cooling device of the present invention includes a shaft 20, a bearing housing 5, an outer sleeve 7, a bearing gland 12, an upper bearing 15, a bushing 17, a lower bearing 18, and a spiral sleeve 1. The spiral sleeve 1 is connected to the shaft 20. The upper bearing 15, the bushing 17, and the lower bearing 18 are connected to the spiral sleeve 1. The bearing housing 5 is connected to the lower end of the lower bearing 18. The bearing gland 12 is connected to the upper end of the upper bearing 15. The outer sleeve 7 is connected between the bearing housing 5 and the bearing gland 12. The upper bearing 15 and the lower bearing 18 are arranged inside the outer sleeve 7. The spiral sleeve 1 is provided with an upper bearing mounting section 101, a threaded section 102, a lower bearing mounting section 103, and an oil swirling section 104. The upper bearing mounting section 101 is arranged above the threaded section 102. The threaded section 102 is arranged above the lower bearing mounting section 103. The lower bearing mounting section 103 is arranged above the oil swirling section 104. The upper bearing 15 is connected to the upper bearing mounting section 101. The lower bearing 18 is connected to the lower bearing mounting section 103. The bushing 17 is arranged between the upper bearing 15 and the lower bearing 18. The bushing 17 is threadedly connected to the threaded section 102. The oil swirling section 104 is provided with a trapezoidal thread I 1041 and a trapezoidal thread II 1042. An oil collecting groove 1043 is arranged between the trapezoidal thread I 1041 and the trapezoidal thread II 1042. The oil collecting groove 1043 is arranged in a circle. The thread helix direction of the trapezoidal thread I 1041 is opposite to that of the trapezoidal thread II 1042. An oil outlet cylinder 4 is connected to the bearing housing 5. The oil outlet cylinder 4 is of a pipe connection flange structure. The oil outlet cylinder 4 is inserted into the bearing housing 5. The flange of the oil outlet cylinder 4 is flange-connected to the flange of the bearing housing 5. The oil swirling section 104 is inserted into the pipe of the oil outlet cylinder 4. There is a gap between the oil swirling section 104 and the inner diameter of the pipe of the oil outlet cylinder 4. An oil collecting cavity 21 is arranged on the pipe of the oil outlet cylinder 4. The oil collecting cavity 21 is arranged in a circle. The oil collecting cavity 21 is communicated with the oil collecting groove 1043. An oil outlet hole 401 is arranged on the pipe of the oil outlet cylinder 4. The bearing gland 12 includes a gland flange 1201 and a gland pipe 1202. An oil inlet hole 1203 is arranged on the gland pipe 1202. The oil inlet hole 1203 is arranged above the upper bearing 15. An oil outlet pipe 6 is connected between the oil outlet hole 401 and the oil inlet hole 1203. Both ends of the oil outlet pipe 6 are respectively connected to the oil outlet hole 401 and the oil inlet hole 1203. The oil collecting groove 1043, the oil collecting cavity 21, the oil outlet pipe 6, and the oil inlet hole 1203 are communicated. A plurality of overflow grooves 1204 are arranged on the gland pipe 1202. The plurality of overflow grooves 1204 are circumferentially evenly distributed.

[0028] Furthermore, an oil baffle sleeve 3 is also connected to the oil outlet cylinder 4. The oil baffle sleeve 3 is of a flange pipe connection structure. The oil baffle sleeve 3 is inserted into the oil outlet cylinder 4. The flange of the oil baffle sleeve 3 is flange-connected to the flange of the oil outlet cylinder 4. The pipe of the oil baffle sleeve 3 is connected between the lower part of the spiral sleeve 1 and the shaft 20. A gap is formed between the pipe of the oil baffle sleeve 3 and the shaft 20. The insertion height of the pipe of the oil baffle sleeve 3 > the liquid level of the lubricating oil inside the outer sleeve 7. A drain pipe 2 is also arranged on the flange of the oil baffle sleeve 3.

[0029] Further, an oil collecting tray 13 is connected to the spiral sleeve 1. The oil collecting tray 13 is arranged above the upper bearing 15. The oil collecting tray 13 includes a bottom ring 1301 and a side baffle 1302. The side baffle 1302 is arranged on the outer circumference of the bottom ring 1301 for one week. An oil leakage hole 1303 is provided on the bottom ring 1301.

[0030] Further, a plurality of the oil leakage holes 1303 are provided, and the plurality of oil leakage holes 1303 are circumferentially and uniformly distributed around the center of the bottom ring 1301.

[0031] Further, an oil baffle 14 is connected to the spiral sleeve 1. The oil baffle 14 is arranged above the oil collecting tray 13, and the diameter of the oil baffle 14 ≥ the diameter of the oil collecting tray 13.

[0032] As Figures 6-8 shown, the present invention further includes a fan cover 10 and a fan 11. The fan 11 is arranged above the outer sleeve 7. The base of the fan 11 is connected to the top end of the spiral sleeve 1. The fan cover 10 is in the shape of a cylinder with an opening downward, and the fan 11 and the outer sleeve 7 are connected inside the fan cover 10.

[0033] Further, a support seat 22 is provided between the fan cover 10 and the outer sleeve 7. One end of the support seat 22 is connected to the outer wall of the outer sleeve 7. A screw hole 2201 is provided at the other end of the support seat 22. A through hole 1001 is provided on the fan cover 10. The fan cover 10 is connected to the support seat 22 by screws. The screws pass through the through hole 1001 and are threadedly connected to the screw hole 2201. A plurality of the support seats 22 are circumferentially and uniformly distributed around the center of the outer sleeve 7. A plurality of the through holes 1001 are circumferentially and uniformly distributed around the center of the fan cover 10.

[0034] Further, heat dissipation fins 8 are provided on the outer wall of the outer sleeve 7. The heat dissipation fins 8 are arranged radially. A plurality of the heat dissipation fins 8 are circumferentially and uniformly distributed around the center of the outer sleeve 7. An air cooling flow channel is formed between every two heat dissipation fins 8.

[0035] Further, the oil outlet pipe 6 is composed of two side pipes and a bottom pipe to form a U shape. The two side pipes of the oil outlet pipe 6 respectively penetrate the outer sleeve 7, and the bottom pipe of the oil outlet pipe 6 is placed in the air cooling flow channel.

[0036] Further, an oil cup 9, a breather cap 16 and an oil level gauge 19 are connected to the outer sleeve 7.

[0037] When the shaft 20 rotates, the spiral sleeve 1 rotates together with the shaft 20. Since the thread helix directions of the trapezoidal thread I 1041 and the trapezoidal thread II 1042 are opposite, the trapezoidal thread I 1041 and the trapezoidal thread II 1042 transport the lubricating oil in the outer sleeve 7 to the oil collecting groove 1043 during the rotation process. It should be noted that the thread helix directions of the trapezoidal thread I 1041 and the trapezoidal thread II 1042 are related to the rotation direction of the shaft 20. For example, when the shaft 20 rotates counterclockwise, the trapezoidal thread I 1041 is left-handed and the trapezoidal thread II 1042 is right-handed. If the setting is incorrect, the lubricating oil will be thrown to the outside of the trapezoidal thread I 1041 and the trapezoidal thread II 1042 and will not enter the oil collecting groove 1043. As the shaft 20 continuously rotates, the lubricating oil in the oil collecting groove 1043 enters the oil outlet pipe 6 through the oil collecting cavity 21 and is transported from the oil outlet pipe 6 to the oil inlet hole 1203 at a high place. After the lubricating oil flows out of the oil inlet hole 1203, it enters above the upper bearing 15, realizing the lubrication of the upper bearing 15. The structural design is ingenious. By using two trapezoidal threads with opposite thread helix directions and the rotation of the shaft 20, the lubricating oil is transported from a low place to a high place. The setting of the overflow groove 1204 prevents the lubricating oil from accumulating above the upper bearing 15, and the excess lubricating oil can flow out of the overflow groove 1204. As Figure 9 shown, the arrows in the figure indicate the flow direction of the lubricating oil.

[0038] The oil retaining sleeve 3 forms a static seal with the shaft 20 to prevent the lubricating oil from overflowing.

[0039] The oil collecting tray 13 can collect the lubricating oil transported by the oil outlet pipe 6 when the shaft 20 rotates normally at a high speed. When the working condition of the pump changes and the shaft 20 is at a low speed, the spiral sleeve 1 is not sufficient to transport the lubricating oil above the upper bearing 15. At this time, the lubricating oil collected on the oil collecting tray 13 is used for short-term lubrication. The oil leakage holes 1303 are provided to allow the lubricating oil collected on the oil collecting tray 13 to drip.

[0040] The setting of multiple oil leakage holes 1303 enables the lubricating oil collected on the oil collecting tray 13 to drip more smoothly, and also prevents the normal operation of the upper bearing 15 from being affected due to the surface tension of the lubricating oil causing a certain oil leakage hole 1303 to be unable to leak oil.

[0041] The setting of the oil baffle 14 effectively blocks the lubricating oil transported by the oil outlet pipe 6 at high speed from overflowing the bearing gland 12.

[0042] The fan 11 rotates to realize air-cooled heat dissipation for the outer sleeve 7, the internal components of the outer sleeve 7, and the lubricating oil inside the outer sleeve 7. The fan cover 10 ensures that the air flow generated by the fan 11 passes through the outer sleeve 7, improving the cooling efficiency. Figure 6 As shown by the arrows in the figure, the air flow direction is indicated.

[0043] The support seat 22 is mainly used for the installation of the fan cover 10, making the installation and disassembly of the fan cover 10 convenient.

[0044] The setting of the heat sink 8 and the air-cooling flow channel enable better heat exchange between the heat inside the outer casing 7 and the outside world, further improving the heat dissipation effect.

[0045] The bottom pipe of the oil outlet pipe 6 is placed in the air-cooling flow channel, and during the process of lubricating oil transportation, the lubricating oil in the oil outlet pipe 6 is effectively air-cooled and dissipated.

[0046] The setting of the oil cup 9 facilitates the addition of lubricating oil, the setting of the oil level gauge 19 is for checking the lubricating oil level, and the breather cap 16 prevents air from being trapped due to oil replenishment and temperature difference.

Claims

1. A vertical pump bearing lubrication and cooling device, characterized in that: It includes a shaft (20), a bearing housing (5), an outer sleeve (7), a bearing gland (12), an upper bearing (15), a bushing (17), a lower bearing (18) and a spiral sleeve (1). The spiral sleeve (1) is connected to the shaft (20). The upper bearing (15), the bushing (17) and the lower bearing (18) are connected to the spiral sleeve (1). The bearing housing (5) is connected to the lower end of the lower bearing (18). The bearing gland (12) is connected to the upper end of the upper bearing (15). The outer sleeve (7) is connected between the bearing housing (5) and the bearing gland (12). The upper bearing (15) and the lower bearing (18) are arranged inside the outer sleeve (7). The spiral sleeve (1) is provided with an upper bearing mounting section (101), a threaded section (102), a lower bearing mounting section (103) and an oil swirling section (104). The upper bearing mounting section (101) is arranged above the threaded section (102). The threaded section (102) is arranged above the lower bearing mounting section (103). The lower bearing mounting section (103) is arranged above the oil swirling section (104). The upper bearing (15) is connected to the upper bearing mounting section (101). The lower bearing (18) is connected to the lower bearing mounting section (103). The bushing (17) is arranged between the upper bearing (15) and the lower bearing (18). The bushing (17) is threadedly connected to the threaded section (102). The oil swirling section (104) is provided with a trapezoidal thread I (1041) and a trapezoidal thread II (1042). There is an oil collecting groove (1043) between the trapezoidal thread I (1041) and the trapezoidal thread II (1042). The oil collecting groove (1043) is provided in a circle. The thread helix direction of the trapezoidal thread I (1041) is opposite to that of the trapezoidal thread II (1042). An oil outlet cylinder (4) is connected to the bearing housing (5). The oil outlet cylinder (4) is of a connecting pipe flange structure. The oil outlet cylinder (4) is inserted into the bearing housing (5). The flange of the oil outlet cylinder (4) is connected to the flange of the bearing housing (5). The oil swirling section (104) is inserted into the connecting pipe of the oil outlet cylinder (4). There is a gap between the oil swirling section (104) and the inner diameter of the connecting pipe of the oil outlet cylinder (4). The connecting pipe of the oil outlet cylinder (4) is provided with an oil collecting cavity (21). The oil collecting cavity (21) is provided in a circle. The oil collecting cavity (21) is communicated with the oil collecting groove (1043). The connecting pipe of the oil outlet cylinder (4) is provided with an oil outlet hole (401). The bearing gland (12) includes a gland flange (1201) and a gland connecting pipe (1202). The gland connecting pipe (1202) is provided with an oil inlet hole (1203). The oil inlet hole (1203) is arranged above the upper bearing (15). An oil outlet pipe (6) is connected between the oil outlet hole (401) and the oil inlet hole (1203). Both ends of the oil outlet pipe (6) are respectively connected to the oil outlet hole (401) and the oil inlet hole (1203). The oil collecting groove (1043), the oil collecting cavity (21), the oil outlet pipe (6) and the oil inlet hole (1203) are communicated. The gland connecting pipe (1202) is provided with overflow grooves (1204). There are multiple overflow grooves (1204). The multiple overflow grooves (1204) are circumferentially evenly distributed;An oil outlet cylinder (4) is further connected with an oil baffle sleeve (3). The oil baffle sleeve (3) is of a flange pipe joint structure. The oil baffle sleeve (3) is inserted into the oil outlet cylinder (4), and the flange of the oil baffle sleeve (3) is connected to the flange of the oil outlet cylinder (4). The pipe of the oil baffle sleeve (3) is connected between the lower part of the spiral sleeve (1) and the shaft (20). A gap is formed between the pipe of the oil baffle sleeve (3) and the shaft (20). The insertion height of the pipe of the oil baffle sleeve (3) is greater than the liquid level of the lubricating oil in the outer sleeve (7). A drain pipe (2) is further arranged on the flange of the oil baffle sleeve (3); A oil collecting pan (13) is connected to the spiral sleeve (1). The oil collecting pan (13) is arranged above the upper bearing (15). The oil collecting pan (13) includes a bottom ring (1301) and a side baffle (1302). The side baffle (1302) is arranged on the outer circumference of the bottom ring (1301). Oil leakage holes (1303) are arranged on the bottom ring (1301); A plurality of oil leakage holes (1303) are provided, and the plurality of oil leakage holes (1303) are circumferentially and uniformly distributed with the center of the bottom ring (1301) as the axis; A baffle plate (14) is connected to the spiral sleeve (1). The baffle plate (14) is arranged above the oil collecting pan (13), and the diameter of the baffle plate (14) is greater than or equal to the diameter of the oil collecting pan (13).; 2. The vertical pump bearing lubrication and cooling device according to claim 1, characterized in that: It further includes a fan cover (10) and a fan (11). The fan (11) is arranged above the outer sleeve (7). The base of the fan (11) is connected to the top end of the spiral sleeve (1). The fan cover (10) is in the shape of a cylinder with an opening downward. The fan (11) and the outer sleeve (7) are connected inside the fan cover (10).

3. The vertical pump bearing lubrication and cooling device according to claim 2, characterized in that: A support seat (22) is provided between the fan cover (10) and the outer sleeve (7). One end of the support seat (22) is connected to the outer wall of the outer sleeve (7). A screw hole (2201) is provided at the other end of the support seat (22). A through hole (1001) is provided on the fan cover (10). The fan cover (10) is connected to the support seat (22) by screws. The screws pass through the through hole (1001) and are threadedly connected to the screw hole (2201). A plurality of the support seats (22) are provided, and the plurality of support seats (22) are circumferentially and evenly distributed around the center of the outer sleeve (7). A plurality of the through holes (1001) are provided, and the plurality of through holes (1001) are circumferentially and evenly distributed around the center of the fan cover (10).

4. The vertical pump bearing lubrication and cooling device according to claim 3, characterized in that: Heat dissipation fins (8) are provided on the outer wall of the outer sleeve (7). The heat dissipation fins (8) are radially arranged. A plurality of the heat dissipation fins (8) are provided, and the plurality of heat dissipation fins (8) are circumferentially and evenly distributed around the center of the outer sleeve (7). An air-cooling flow channel is formed between every two heat dissipation fins (8).

5. The vertical pump bearing lubrication and cooling device according to claim 4, characterized in that: The oil outlet pipe (6) is composed of two side pipes and a bottom pipe to form a U shape. The two side pipes of the oil outlet pipe (6) respectively penetrate the outer sleeve (7), and the bottom pipe of the oil outlet pipe (6) is placed in the air-cooling flow channel.

6. The vertical pump bearing lubrication and cooling device according to any one of claims 1-5, characterized in that: An oil cup (9), a breather cap (16) and an oil level gauge (19) are connected to the outer sleeve (7).

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