Vertical shaft impact crusher main shaft assembly lubricated by thin oil

Abstract

The utility model discloses a thin oil lubricated spindle assembly of a vertical shaft impact crusher, which is characterized in that a spindle seat is arranged on a frame, a spindle is mounted on the spindle seat, a spacer sleeve is arranged on the spindle, a rotor sleeve is sleeved outside the spacer sleeve, an upper bearing end cover is arranged above the spindle, a lower bearing end cover is arranged below the spindle, and an upper rolling bearing is positioned and mounted in the upper bearing end cover; a supporting bearing and a lower rolling bearing are positioned in the lower bearing end cover, an upper annular oil passing groove is formed in a lubricating cavity, communicated with the upper rolling bearing, of the upper bearing end cover, an oil injection channel is formed in one side of the upper portion of the rotor sleeve, and the upper portion of the rotor sleeve is communicated with the upper annular oil passing groove. The lower part of the rotor sleeve is provided with a first overflow channel of which the lower end is communicated with the lower annular oil passing groove. And the spacer sleeve, the upper rolling bearing, the lower rolling bearing and the supporting bearing form a sealed thin oil lubrication channel around the circumference of the main shaft. A thin oil lubrication station is matched, the rotating speed of the rotor is effectively increased, and the oil temperature is rapidly cooled.

Description

Technical Field

[0001] The utility model relates to the field of sand making equipment, in particular to a thin oil lubricated vertical shaft impact crusher main shaft component. Background Art

[0002] With the restriction and prohibition of the mining of natural sand (river sand) by the state, the market has put forward higher requirements for artificial sand (mechanical sand), requiring the sand gradation to meet the second-zone sand standard in GB / T14684, and about 85% of the second-zone sand is medium-fine sand. It is well known that the crusher currently used in the production of mechanical sand is basically a spindle impact crusher. This type of crusher mainly uses the centrifugal force generated by the high-speed rotation of the circular impeller to throw the stones at the center of the impeller at high speed, so that the stones collide with each other under the state of high-speed rotation and crush into sand <4.75mm. Although the produced mechanical sand particles are mostly excellent regular cubes, the gradation is coarse and the coarse sand is seriously excessive. Therefore, in the overall production process, we need to return most of the coarse sand in the finished product to the spindle impact crusher for further crushing through screening. The particle size of coarse sand is mostly 2-4.75mm. Due to the small particle size, the original rotation speed of the impeller can no longer generate enough kinetic energy for the material, so that the material cannot be effectively crushed. The coarse sand circulates repeatedly in the equipment, and the output of medium and fine sand is very small. Therefore, we consider increasing the rotor speed to make the impeller generate higher kinetic energy.

[0003] Higher speed will make the rotor generate more heat. Traditional rotors are lubricated with solid grease. The heat generated by high speed will damage the rotor bearings. Therefore, it is necessary to develop a thin oil lubricated vertical shaft impact crusher spindle assembly, which should be equipped with a thin oil lubrication station with a cooling system to effectively increase the rotor speed and quickly cool the oil temperature. Utility Model Content

[0004] The utility model provides a thin oil lubricated vertical shaft impact crusher main shaft component, aiming at being equipped with a thin oil lubrication station with a cooling system, so as to effectively solve the problem of increasing the rotor speed and quickly cooling the oil temperature.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a thin oil lubricated vertical shaft impact crusher spindle assembly, including an impact crusher frame, a spindle seat is arranged on the frame, a spindle is installed on the spindle seat, a spacer sleeve is arranged on the spindle, a rotor sleeve is sleeved on the outside of the spacer sleeve, an upper bearing end cover is arranged above the spindle, a lower bearing end cover is arranged below, an upper rolling bearing is positioned and installed in the upper bearing end cover, a supporting bearing and a lower rolling bearing are positioned and arranged in the lower bearing end cover, and the upper bearing end cover is connected to the lubrication cavity of the upper rolling bearing. An upper annular oil groove is provided, an oil injection channel is provided on one side of the upper part of the rotor sleeve, an oil injection nozzle is provided at the lower part of the oil injection channel, the upper part is connected to the upper annular oil groove, and the oil injection nozzle is connected to the thin oil lubrication station; the lower bearing end cover is provided with a lower annular oil groove connected to the lower rolling bearing, and the lower annular oil groove is connected to the oil outlet, and at least a first overflow channel is provided at the lower part of the rotor sleeve, the lower end of the first overflow channel is connected to the lower annular oil groove, and the upper end is provided above the upper rolling bearing and is connected to a first one-way overflow valve.

[0006] Preferably, an oil storage tank is arranged above the upper rolling bearing, and the oil storage tank is connected with the upper annular oil groove and the lubrication cavity of the upper rolling bearing.

[0007] Preferably, a spacer ring is provided between the support bearing and the lower rolling bearing.

[0008] Preferably, a sealing disk is provided between the upper bearing end cover, the lower bearing end cover and the main shaft.

[0009] Preferably, a second overflow channel is provided on the other side of the upper end of the rotor sleeve corresponding to the oiling nozzle, the second overflow channel is connected to a second one-way overflow valve, and the second one-way overflow valve is provided below the lower edge of the upper rolling bearing.

[0010] Preferably, a third overflow channel is provided on one side of the lower bearing end cover, and the third overflow channel is connected to a third one-way overflow valve.

[0011] Preferably, the support bearing is a spherical roller bearing.

[0012] Compared with the related art, the utility model has the following beneficial effects:

[0013] The lubricating oil filtered and cooled by the thin oil station enters the interior of the main shaft rotor through the oiling nozzle. After entering the inner and outer rings of the bearing, the lubricating oil is quickly distributed through the rotation of the bearing, and flows into the lower bearing group under the traction of its own gravity. The lubricating oil that fails to flow out in time can also flow into the lower bearing group through the overflow port. Finally, the lubricating oil flows to the oil collecting tank through the overflow port and the gap between the bearing rollers, and flows out to the thin oil station through the oil outlet at the bottom of the oil collecting tank for further filtration, cooling, and circulation. Therefore, the thin oil-lubricated vertical shaft impact crusher spindle assembly of the present application is equipped with thin oil lubrication, the spindle assembly dissipates heat quickly, and the bearing life is greatly improved; the rotor speed can be greatly improved; the lubricating oil can be recycled, and the problem of frequent refueling is avoided compared to solid grease lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the main shaft assembly of the vertical shaft impact crusher lubricated with thin oil in this embodiment;

[0015] Numbers in the figure:

[0016] 1. Main shaft, 2. Spacer sleeve, 3. Upper rolling bearing, 4. Lower rolling bearing, 5. Support bearing, 6. Rotor sleeve, 7. Upper bearing end cover, 8. Lower bearing end cover, 9. Upper annular oil groove, 10. Oil filling channel, 11. Second overflow channel, 12. Second one-way overflow valve, 13. Lower annular oil groove, 14. First overflow channel, 15. First one-way overflow valve, 16. Third overflow channel, 17. Third one-way overflow valve, 18. Oil storage tank, P, oil filling nozzle, T, oil outlet. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0018] like Figure 1 As shown, a thin oil lubricated vertical shaft impact crusher spindle assembly includes an impact crusher frame, a spindle seat is arranged on the frame, a transmission spindle 1 is installed on the spindle seat, a spacer sleeve 2 is arranged on the transmission spindle 1, the upper end of the transmission spindle 1 is connected to an upper rolling bearing 3, and the lower end is connected to a lower rolling bearing 4 and a support bearing 5, and the support bearing 5 adopts a spherical roller bearing. The spacer sleeve 2, the upper rolling bearing 3, the lower rolling bearing 4 and the support bearing 5 are arranged around the spindle circle to form a sealed lubrication channel, and the lubricating oil flows from top to bottom in the bearing gaps on the circumference of the spindle, fully lubricates, and takes away the friction heat of the spindle.

[0019] A rotor sleeve 6 is arranged between the upper and lower bearings. The upper rolling bearing 3 is positioned and installed on the upper bearing end cover 7, the lower rolling bearing 4 and the support bearing 5 are positioned and installed on the lower bearing end cover 8, and a spacer ring is arranged between the lower rolling bearing 4 and the support bearing 5. A sealing disk is arranged between the bearing end cover and the main shaft.

[0020] The upper bearing end cover 7 is connected to the upper bearing lubrication cavity and is provided with an upper annular oil groove 9. An oil injection channel 10 is provided on one side of the upper part of the rotor sleeve 6. An oil injection nozzle P is provided at the lower part of the oil injection channel 10, and the upper part is connected to the upper annular oil groove 9. A second overflow channel 11 is provided on the other side of the upper end of the rotor sleeve 6. The second overflow channel 11 is connected to a high-level overflow pipeline, and a second one-way overflow valve 12 is provided on the high-level overflow pipeline. The second one-way overflow valve 12 is provided below the lower edge of the upper rolling bearing 3. The second overflow channel 11 and the first overflow channel 14 are provided at two diagonal positions of the middle section of the rotor sleeve 6, corresponding to the thin oil lubrication overflow of the upper bearing and the lower bearing, respectively.

[0021] The lower bearing end cover 8 is provided with a lower annular oil groove 13 connected to the lower rolling bearing 4, and a first overflow channel 14 is provided on one side of the lower end of the rotor sleeve 6. The first overflow channel 14 is connected to a low-level overflow pipeline, and a first one-way overflow valve 15 is provided on the low-level overflow pipeline. The lower end of the first overflow channel 14 is connected to the lower annular oil groove 3, and the upper end is arranged above the lower rolling bearing 4. When the lower lubricating fluid accumulates above the lower rolling bearing, the first one-way overflow valve 15 is opened for overflow, reducing the amount of thin oil in the rotating chamber, reducing the rotation resistance, and helping to optimize and increase the rotor speed.

[0022] A third overflow channel 16 is arranged on one side of the lower bearing end cover 8, and the third overflow channel 16 is connected to a third one-way overflow valve 17. The third overflow channel 16 is arranged on the lower bearing end cover 8. When the oil pressure in the main shaft rotating chamber is within a set range, the third one-way overflow valve 16 is closed to fully ensure the lubrication and heat absorption of the rotating chamber by the thin oil lubrication. When the oil pressure in the main shaft rotating chamber exceeds the set range, the third one-way overflow valve 16 is opened to release the thin oil overflow for pressure relief, thereby reducing the rotation resistance and over-pressure friction, maintaining the best lubrication environment for the high-speed rotating main shaft, and improving the service life of the main shaft and the bearings.

[0023] An oil storage tank 18 is arranged above the upper rolling bearing 3, and the oil storage tank 18 is connected to the upper annular oil groove 9 and the lubrication cavity of the upper rolling bearing 3. For an upper rolling bearing with a larger lubrication cavity, the oil storage tank 18 is arranged in this embodiment to store oil for lubrication of the upper rolling bearing, thereby ensuring that the lubricating oil in the vertical flow maintains sufficient lubrication and heat absorption for the upper rolling bearing 3, thereby increasing the rotation speed of the rotor of the main shaft 1.

[0024] The lower annular oil groove 13 is connected to the oil outlet T. After the lubricating oil enters the inner and outer rings of the bearing, it is quickly distributed through the rotation of the bearing, and flows into the lower bearing group under the traction of its own gravity. The lubricating oil that fails to flow out in time can also flow into the lower bearing group through the overflow port. Finally, the lubricating oil flows to the oil collecting tank through the overflow port and the gap between the bearing rollers, and flows out to the thin oil station through the oil outlet T at the bottom of the oil collecting tank.

[0025] The thin oil lubrication operation process of this embodiment is as follows: oil is pressurized from the upper oil inlet, so that the lubricating thin oil is pre-stored in the oil storage tank, and the upper rolling bearing 14 is immersed in full lubrication, so that the lubricating oil liquid fully fills the inner ring, outer ring, rolling element and the inside of the cage of the bearing. The lubricating oil squeezed out by the upper rolling bearing takes away the heat of the rotating shaft downward and enters the lower rolling bearing at the bottom for lubrication. The friction surface of the upper rolling bearing is separated by the lubricating oil without direct contact, which can not only reduce friction loss and surface wear, but also the thicker oil film formed has certain vibration absorption and heat absorption capabilities. In addition, the large area bearing the load makes it easy to form complete liquid friction at high-speed rotation, so it has stronger adaptability to high-speed rotation.

[0026] When the internal lubricating oil pressure is higher than the opening pressure of the one-way valve, the lubricating oil can partially flow out of the cavity, providing timely overflow protection for the upper and lower bearings to avoid over-pressure resistance. On the other hand, the lubricating oil flowing out of the one-way valve makes it easier for on-site personnel to visually observe the condition of the lubricating oil in the cavity and to judge the use and adjustment of the hydraulic lubrication system.

[0027] The vertical shaft impact crusher spindle assembly with thin oil lubrication of the present application is equipped with thin oil lubrication, the spindle assembly dissipates heat quickly, and the bearing life is greatly improved; the rotor speed can be greatly improved; the lubricating oil can be recycled, and compared with solid grease lubrication, the problem of frequent refueling is eliminated.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A thin oil lubricated vertical shaft impact crusher spindle assembly, characterized in that: The invention comprises an impact crusher frame, wherein a main shaft seat is arranged on the frame, a main shaft is installed on the main shaft seat, a spacer sleeve is arranged on the main shaft, a rotor sleeve is sleeved on the outside of the spacer sleeve, an upper bearing end cover is arranged above the main shaft, and a lower bearing end cover is arranged below the main shaft, an upper rolling bearing is positioned and installed in the upper bearing end cover, a supporting bearing and a lower rolling bearing are positioned and arranged in the lower bearing end cover, an upper annular oil groove is arranged in the lubrication cavity of the upper bearing end cover connected to the upper rolling bearing, an oil injection channel is arranged on one side of the upper part of the rotor sleeve, an oil injection nozzle is arranged at the lower part of the oil injection channel, the upper part is connected to the upper annular oil groove, and the oil injection nozzle is connected to a thin oil lubrication station; a lower annular oil groove connected to the lower rolling bearing is arranged on the lower bearing end cover, and the lower annular oil groove is connected to an oil outlet, and at least a first overflow channel is arranged at the lower part of the rotor sleeve, the lower end of the first overflow channel is connected to the lower annular oil groove, and the upper end is arranged above the upper rolling bearing and connected to a first one-way overflow valve.

2. The thin oil lubricated vertical shaft impact crusher spindle assembly according to claim 1 is characterized in that: An oil storage tank is arranged above the upper rolling bearing, and the oil storage tank is connected with the upper annular oil groove and the lubrication cavity of the upper rolling bearing.

3. The thin oil lubricated vertical shaft impact crusher main shaft assembly according to claim 1, characterized in that: A spacer ring is arranged between the support bearing and the lower rolling bearing.

4. The thin oil lubricated vertical shaft impact crusher main shaft assembly according to claim 1, characterized in that: A sealing disk is arranged between the upper bearing end cover, the lower bearing end cover and the main shaft.

5. The thin oil lubricated vertical shaft impact crusher main shaft assembly according to claim 1, characterized in that: A second overflow channel is arranged on the other side of the upper end of the rotor sleeve corresponding to the oil injection nozzle, and the second overflow channel is connected to a second one-way overflow valve, and the second one-way overflow valve is arranged below the lower edge of the upper rolling bearing.

6. The thin oil lubricated vertical shaft impact crusher main shaft assembly according to claim 1, characterized in that: A third overflow channel is arranged on one side of the lower bearing end cover, and the third overflow channel is connected to a third one-way overflow valve.

7. The thin oil lubricated vertical shaft impact crusher main shaft assembly according to claim 1, characterized in that: The support bearing adopts a spherical roller bearing.

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