Rotor structure of energy-saving vertical shaft impact crusher

Abstract

The invention discloses a rotor structure of an energy-saving vertical shaft impact crusher, and relates to the technical field of energy-saving motors. A rotor structure of an energy-saving vertical shaft impact crusher comprises a main shaft connected to the output end of an energy-saving motor, and further comprises a bottom plate and a top plate fixedly connected to the top end of the main shaft, a top plate is arranged above the bottom plate, a feeding groove is formed in the upper end of the top plate, and a discharging groove is formed in the lower end of the top plate. Four groups of circumferentially distributed material throwing plates are fixedly connected between the top plate and the bottom plate; the four groups of material throwing plates form a circumferentially distributed runner between the top plate and the bottom plate; the material distribution cone is arranged at the upper end of the bottom plate; according to the invention, the impact force on the bottom plate can be reduced, the service life is prolonged, the overall maintenance cost is reduced, the use is more energy-saving and environment-friendly, the operation energy consumption of the energy-saving motor can be reduced, the operation of the energy-saving motor is more energy-saving and environment-friendly, the bearing is not easy to damage due to high temperature, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy-saving motors, and specifically relates to a rotor structure of an energy-saving vertical shaft impact crusher. Background Art

[0002] A vertical shaft impact crusher (VSI) is an efficient sand-making equipment that uses a high-speed rotating rotor to project materials for impact crushing. The core component of the rotor mainly consists of a main shaft, a bearing seat, throwing heads (impact blocks), a material distribution plate (or a guiding plate or a material distribution cone), upper / lower liners, and a protective cover, etc. It accelerates and throws out materials through the principle of centrifugal force, and collides with the peripheral liner or the materials themselves to achieve crushing. This equipment needs to be driven by an energy-saving motor to make the rotor rotate at a high speed (the linear velocity can reach up to 50m / s - 80m / s).

[0003] It is found in use that during long-term operation of the rotor, the rotor will continuously bear the violent impact of materials, resulting in heating and wear. In particular, the material distribution cone and the lower liner on the rotor will also be affected by the downward impact of materials, which not only shortens the service life of key components, increases the cost of replacement and maintenance, but also reduces the energy efficiency of the energy-saving motor and the entire machine due to the increase in frictional energy consumption, not meeting the requirements of energy conservation and environmental protection. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a rotor structure of an energy-saving vertical shaft impact crusher that can overcome or at least partially solve the above problems.

[0005] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: A rotor structure of an energy-saving vertical shaft impact crusher includes a main shaft connected to the output end of an energy-saving motor, and further includes: a bottom plate fixedly connected to the top end of the main shaft. Among them, a top plate is arranged above the bottom plate, and a feed groove is provided at the upper end of the top plate. Four groups of throwing plates distributed in a circle are fixedly connected between the top plate and the bottom plate, and four groups of throwing plates form a flow channel distributed in a circle between the top plate and the bottom plate; a material distribution cone is arranged at the upper end of the bottom plate and is located in the middle of the four groups of flow channels. Among them, the top of the material distribution cone faces the feed groove, and a buffer component for buffering the material distribution cone is provided on the bottom plate.

[0006] Preferably, the buffer component includes a buffer column fixedly connected to the bottom of the material distribution cone. A buffer groove extending into the main shaft is provided on the bottom plate, and the buffer column is longitudinally slidably installed in the buffer groove, and a buffer spring is installed between the buffer column and the inner bottom of the buffer groove.

[0007] Further, upper air holes inclined towards the flow channel are provided on all four sides of the material distribution cone. A first exhaust hole extending into the material distribution cone is provided at the bottom of the buffer column. A first air inlet hole penetrating through to the outer wall of the main shaft is provided in the buffer groove. Check valves are fixedly installed in both the first air inlet hole and the first exhaust hole. The first exhaust hole is communicated with the upper air hole through a first connection hole.

[0008] Furthermore, a plurality of strip-shaped grooves arranged at equal intervals are provided at the inner bottom of the flow channel. The exhaust end of the upper air hole faces towards the strip-shaped grooves. The cross-section of the plurality of strip-shaped grooves along the radial direction of the bottom plate is in a continuous wavy line shape.

[0009] Preferably, a guide pipe is fixedly connected to the upper port of the feed groove. An upper annular cover is arranged around both the guide pipe and the outer wall of the main shaft. Bearings are installed on both the guide pipe and the outer wall of the main shaft. The outer ring of the bearing is sleeved in the upper annular cover. A positioning spring is installed between the outer ring of the bearing and the inner wall of the upper annular cover.

[0010] Further, a plurality of annular cavities coaxial and arranged at equal intervals are provided in the bottom plate. Lower air holes extending into the strip-shaped grooves are provided in the plurality of annular cavities. The exhaust end of the lower air hole is inclined towards the outlet direction of the flow channel. A linkage part for supplying air to the plurality of annular cavities in sequence is provided in the bearing.

[0011] Furthermore, the linkage part includes a plurality of device grooves provided on the outer wall of the inner ring of the bearing. Piston plates are slidably installed in the plurality of device grooves. A return spring is installed between the piston plate and the inner wall of the device groove. A roller is rotatably installed at one end of the piston plate away from the return spring. Among them, an annular plate is fixedly connected to the outer wall of the upper annular cover. The roller presses against the inner wall of the annular plate. A second air inlet hole and a second exhaust hole extending into the device groove are provided on the outer wall of the inner ring of the bearing. The second exhaust hole is connected to the annular cavity through a connection part.

[0012] Furthermore, the connection part includes a plurality of groups of arc-shaped covers fixedly connected to the outer wall of the inner ring of the bearing. The exhaust ends of the plurality of second exhaust holes are respectively communicated with the plurality of groups of arc-shaped covers. The plurality of second exhaust holes are divided into several groups under the action of the plurality of groups of arc-shaped covers. A lower annular cover aligned with the plurality of annular cavities up and down is fixedly connected to the lower end of the bottom plate. A conveying hole penetrating through to the lower annular cover below it is provided in the annular cavity. The plurality of lower annular covers are respectively connected to the plurality of arc-shaped covers through connecting pipes.

[0013] Furthermore, a protection pipe is fixedly connected between the top plate and the bottom plate. Protective covers are fixed to both the top of the top plate and the lower end of the bottom plate. The connecting pipe is located inside the protection pipe and the protective cover.

[0014] Furthermore, a support plate is fixedly connected to the outer wall of the upper annular cover, and a positioning hole is provided on the support plate.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. In the present invention, the impact force of the material downward causes the material distribution cone and the buffer column to slide downward. The frictional force between the buffer column and the inner wall of the buffer groove and the elastic force of the buffer spring can buffer part of the impact force received by the material distribution cone. Therefore, the material distribution cone is not easily damaged due to the impact, and the impact force received by the bottom plate is reduced, improving the service life, reducing the overall maintenance cost, and making it more energy-saving and environmentally friendly.

[0016] 2. In the present invention, the buffer column compresses the air in the buffer groove, and the air blows towards the top surface of the bottom plate from the end of the upper air hole. On the one hand, it can assist in dissipating heat from the material distribution cone, improving the service life of the material distribution cone. On the other hand, when the air flow blows towards the upper end surface of the bottom plate, the bottom plate can also obtain the effect of auxiliary heat dissipation, improving the service life of the bottom plate. The maintenance cost of the entire device is further reduced, and it is more energy-saving and environmentally friendly.

[0017] 3. In the present invention, the jumping rotor causes the multiple rollers distributed in a circle to sequentially press against the inner wall of the annular plate. The air will sequentially pass through the second air inlet hole, the device groove, and the second air outlet hole. Therefore, the bearing can be assisted in heat dissipation, and it is not easily increased in frictional resistance due to high temperature. Thus, the operation of the energy-saving motor is more labor-saving, and further, the operating energy consumption of the energy-saving motor can be reduced, making its operation more energy-saving and environmentally friendly. And the bearing is not easily damaged due to high temperature, reducing the maintenance cost.

[0018] 4. In the present invention, through the arrangement of the strip-shaped grooves on the bottom plate, when the sharp surface of the material impacts the surface of the bottom plate, the wavy cross-section of the bottom plate causes the sharp part of the material to slide into the strip-shaped grooves, and the material may generate a small rotation angle, thereby achieving the unloading of the downward impact force and reducing the downward impact force received by the bottom plate.

[0019] 5. In the present invention, through the arrangement of the strip-shaped grooves, sand grains and dust will gradually accumulate in the strip-shaped grooves. When the sharp surface of the material is inserted into the strip-shaped grooves, the sand grains and dust can also reduce the impact force received by the bottom plate. At the same time, the sand grains and dust in the multiple strip-shaped grooves form a sand grain layer on the surface of the bottom plate. The sand grain layer can reduce the frictional resistance of the material and protect the surface of the bottom plate. On the one hand, it improves the efficiency of discharging the material, and on the other hand, it makes the bottom plate not easily damaged.

[0020] 6. The present invention divides multiple second exhaust holes into several groups in sequence through multiple arc-shaped covers. Then, multiple annular cavities cause multiple lower air holes in the strip-shaped groove to exhaust air in sequence. The multiple lower air holes gradually blow out some dust and sand grains in the strip-shaped groove, preventing excessive fine dust in the strip-shaped groove from caking, ensuring the buffering effect of the sand grains in the strip-shaped groove, and enabling the bottom plate to maintain a good anti-impact effect.

[0021] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the drawings: Figure 1 is a three-dimensional structural schematic diagram of the rotor structure of an energy-saving vertical shaft impact crusher proposed by the present invention; Figure 1 ; Figure 2 is a three-dimensional structural schematic diagram of the rotor structure of an energy-saving vertical shaft impact crusher proposed by the present invention; Figure 2 ; Figure 3 is a sectional structural schematic diagram of the rotor structure of an energy-saving vertical shaft impact crusher proposed by the present invention; Figure 4 is a structural schematic diagram of the top plate and bottom plate of the rotor structure of an energy-saving vertical shaft impact crusher proposed by the present invention; Figure 5 is a partial structural schematic diagram of the rotor structure of an energy-saving vertical shaft impact crusher proposed by the present invention; Figure 1 ; Figure 6 is a partial sectional structural schematic diagram of the rotor structure of an energy-saving vertical shaft impact crusher proposed by the present invention; Figure 7 is of the rotor structure of an energy-saving vertical shaft impact crusher proposed by the present invention Figure 6 structural schematic diagram of part A; Figure 8 is a partial structural schematic diagram of the rotor structure of an energy-saving vertical shaft impact crusher proposed by the present invention; Figure 2 ; Figure 9 is a structural schematic diagram of the bearing of the rotor structure of an energy-saving vertical shaft impact crusher proposed by the present invention; Figure 10 is a sectional structural schematic diagram of the bearing of the rotor structure of an energy-saving vertical shaft impact crusher proposed by the present invention.

[0023] In the figure: 1. Main shaft; 2. Bottom plate; 3. Top plate; 4. Feeding trough; 5. Throwing plate; 6. Runner; 7. Material distributing cone; 8. Buffer trough; 9. Buffer column; 10. Buffer spring; 11. Strip-shaped groove; 12. First air inlet hole; 13. First exhaust hole; 14. Upper air hole; 15. First connection hole; 16. Guide pipe; 17. Upper annular cover; 18. Bearing; 19. Positioning spring; 20. Annular cavity; 21. Lower air hole; 22. Lower annular cover; 23. Device trough; 24. Piston plate; 25. Roller; 26. Annular plate; 27. Second air inlet hole; 28. Second exhaust hole; 29. Arc-shaped cover; 30. Connecting pipe; 31. Support plate; 32. Protective cover; 33. Protection pipe; 34. Conveying hole; 35. Return spring. Detailed implementation manner

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0025] Embodiment 1: Refer to Figures 1 - 10 , a rotor structure of an energy-saving vertical shaft impact crusher, including a main shaft 1 connected to the output end of an energy-saving motor, and the two can be connected by two meshing transmission gears. It also includes: a bottom plate 2 fixedly connected to the top end of the main shaft 1. Among them, a top plate 3 is arranged above the bottom plate 2, and a feeding trough 4 for conveying materials is arranged at the upper end of the top plate 3. The bottom plate 2 and the top plate 3 are equivalent to the upper liner and the lower liner mentioned in the background art. Four groups of circumferentially distributed throwing plates 5 are fixedly connected between the top plate 3 and the bottom plate 2. The throwing plates 5 are equivalent to the throwing heads mentioned in the background art. Four groups of throwing plates 5 form a circumferentially distributed runner 6 between the top plate 3 and the bottom plate 2, and the runner 6 is used to throw out materials; a material distributing cone 7 for guiding materials to the runner 6, arranged at the upper end of the bottom plate 2 and located in the middle of the four groups of runners 6. Among them, the top of the material distributing cone 7 faces the feeding trough 4, and a buffer component for buffering the material distributing cone 7 is arranged on the bottom plate 2. The buffer component includes a buffer column 9 fixedly connected to the bottom of the material distributing cone 7. A buffer trough 8 extending into the main shaft 1 is arranged on the bottom plate 2, and the buffer column 9 is longitudinally slidably installed in the buffer trough 8. A buffer spring 10 is installed between the buffer column 9 and the inner bottom of the buffer trough 8.

[0026] Specifically, during feeding, the material will sequentially enter between the top plate 3 and the bottom plate 2 from the guide pipe 16 and the feeding trough 4, and will fall onto the material distribution cone 7. When the material falls onto the material distribution cone 7, the material distribution cone 7 will drive the buffer column 9 to slide downward in the buffer groove 8 due to the downward impact force, and compress the buffer spring 10. The frictional force between the buffer column 9 and the inner wall of the buffer groove 8 and the elastic force of the buffer spring 10 can buffer part of the impact force received by the material distribution cone 7. Therefore, the material distribution cone 7 is not likely to be damaged due to the impact, and the impact force received by the bottom plate 2 is reduced, improving the service life, reducing the overall maintenance cost, and making it more energy-saving and environmentally friendly. When the material distribution cone 7 is not subject to a downward impact force or the impact force decreases, the buffer spring 10 will elastically reset and drive the buffer column 9 and the material distribution cone 7 to lift and reset upward.

[0027] Embodiment 2: Refer to Figure 3 、 Figure 6 and Figure 7 , the rotor structure of an energy-saving vertical shaft impact crusher is basically the same as that of Embodiment 1. Furthermore: Upper air holes 14 inclined towards the flow channel 6 are provided around the above-mentioned material distribution cone 7. A first exhaust hole 13 extending into the material distribution cone 7 is provided at the bottom of the buffer column 9. A first air inlet hole 12 penetrating through the outer wall of the main shaft 1 is provided in the buffer groove 8. Check valves are fixedly installed in both the first air inlet hole 12 and the first exhaust hole 13. The first exhaust hole 13 is communicated with the upper air hole 14 through a first connection hole 15. A sealing ring that fits with the inner wall of the buffer groove 8 is also installed on the outer wall of the buffer column 9.

[0028] Specifically, when the buffer column 9 moves downward, the buffer column 9 will compress the air in the buffer groove 8. The air in the buffer groove 8 will be delivered to the first connection hole 15 through the first exhaust hole 13, and finally will be blown towards the top surface of the bottom plate 2 from the end of the upper air hole 14. On the one hand, when the air flow passes through the first exhaust hole 13, the first connection hole 15 and the upper air hole 14, it can take away part of the temperature on the material distribution cone 7, thereby completing the auxiliary heat dissipation of the material distribution cone 7, making the material distribution cone 7 not likely to heat up violently due to frequent impacts, and further improving the service life of the material distribution cone 7. On the other hand, when the air flow blows towards the upper end surface of the bottom plate 2, the bottom plate 2 can also obtain the effect of auxiliary heat dissipation, so that the service life of the bottom plate 2 can also be improved. When the buffer column 9 moves upward and resets, a negative pressure will be generated in the buffer groove 8, and external air will be sucked through the first air inlet hole 12.

[0029] A plurality of equally spaced strip-shaped grooves 11 are provided at the inner bottom of the above-mentioned flow channel 6. The exhaust end of the upper air hole 14 faces into the strip-shaped grooves 11. The cross-section of the plurality of strip-shaped grooves 11 along the radial direction of the bottom plate 2 is in a continuous wavy line shape. That is to say, the axial cross-section shape of the strip-shaped groove 11 is close to a U shape, and the top edges on both sides are transitioned to the top surface of the bottom plate 2 through rounded corners.

[0030] Since the surface of the bottom plate 2 is provided with a plurality of strip-shaped grooves 11, and the cross-sectional shape of the strip-shaped grooves 11 and the bottom plate 2 is in a continuous wavy line shape, when the sharp surface of the material impacts the surface of the bottom plate 2, the wavy cross-section of the bottom plate 2 will cause the sharp part of the material to slide into the strip-shaped grooves 11, and the material may generate a small rotation angle, so as to achieve the unloading of the downward impact force, reduce the downward impact force received by the bottom plate 2. Due to the setting of the strip-shaped grooves 11, sand grains and dust will gradually accumulate in the strip-shaped grooves 11. When the sharp surface of the material is inserted into the strip-shaped grooves 11, the sand grains and dust can also reduce the impact force received by the bottom plate 2. At the same time, the sand grains and dust in the plurality of strip-shaped grooves 11 will form a sand grain layer on the surface of the bottom plate 2. The sand grain layer can reduce the frictional resistance received by the material and protect the surface of the bottom plate 2 at the same time. On the one hand, it improves the efficiency of discharging the material, and on the other hand, it can prevent the bottom plate 2 from being damaged easily.

[0031] Example 3: Refer to Figures 1 - 3 and Figures 9 - 10 , the rotor structure of an energy-saving vertical shaft impact crusher is basically the same as that of Example 2. Further: A guide pipe 16 is fixedly connected to the upper port of the above-mentioned feeding trough 4. An upper annular cover 17 is arranged around the outer walls of the guide pipe 16 and the main shaft 1. An annular groove is provided on the inner wall of the upper annular cover 17. Bearings 18 are installed on the outer walls of the guide pipe 16 and the main shaft 1. The bearing mainly consists of an outer ring, an inner ring, rollers and a cage. The outer ring of the bearing 18 is sleeved in the upper annular cover 17, and a positioning spring 19 is installed between the outer ring of the bearing 18 and the inner wall of the upper annular cover 17.

[0032] Specifically, during the rotation of the rotor, the upper and lower upper annular covers 17 and the bearings 18 can limit the upper and lower ends of the rotor, making the rotation process of the rotor more stable and not easy to jump or swing (it is impossible to completely avoid in practice). The reason for jumping and swinging is that the material cannot enter between the bottom plate 2 and the top plate 3 completely evenly, which will cause the center of gravity of the rotor to be unstable. When the swinging force of the rotor is greater than that of the positioning spring 19, the guide pipe 16 and the main shaft 1 will push the bearing 18 to revolve around the axis of the rotor in the cavity of the upper annular cover 17. Due to the limitation of the positioning spring 19, the outer ring of the bearing 18 will only revolve around the axis of the rotor and will not rotate around its own axis, that is, the bearing 18 will radially jump in the upper annular cover 17. At this time, the frictional force between the outer ring of the bearing 18 and the upper annular cover 17 and the positioning spring 19 can buffer part of the force.

[0033] A support plate 31 is fixedly connected to the outer wall of the above-mentioned upper annular cover 17. A positioning hole is provided on the support plate 31. During installation, the two ends of the rotor can be restricted in the housing of the crusher through the support plate 31.

[0034] Example 4: Refer to Figures 1 - 3 andFigures 5 - 10 , a rotor structure of an energy-saving vertical shaft impact crusher, which is basically the same as that of Embodiment 3. Further: A plurality of coaxial and equidistantly arranged annular cavities 20 are provided in the bottom plate 2. Lower air holes 21 extending into the strip-shaped grooves 11 are provided in the plurality of annular cavities 20. The exhaust ends of the lower air holes 21 are inclined towards the outlet direction of the flow channel 6. A linkage part for supplying air to the plurality of annular cavities 20 in sequence is provided in the bearing 18. The linkage part includes a plurality of device grooves 23 provided on the outer wall of the inner ring of the bearing 18. Piston plates 24 are slidably installed in the plurality of device grooves 23. A return spring 35 is installed between the piston plates 24 and the inner walls of the device grooves 23. One end of the piston plate 24 away from the return spring 35 is rotatably installed with a roller 25. Among them, an annular plate 26 is fixedly connected to the outer wall of the upper annular cover 17. The roller 25 abuts against the inner wall of the annular plate 26. A second air inlet hole 27 and a second air exhaust hole 28 extending into the device groove 23 are provided on the outer wall of the inner ring of the bearing 18. The second air exhaust hole 28 is connected to the annular cavity 20 through a connecting part.

[0035] Specifically, when the bearing 18 revolves in the upper annular cover 17, the outer ring of the bearing 18 will cause the circumferentially distributed plurality of rollers 25 to sequentially abut against the inner wall of the annular plate 26. When the roller 25 is abutted, it will push the piston plate 24 to slide into the device groove 23 and compress the return spring 35. The air in the device groove 23 will be discharged through the second air exhaust hole 28. When the roller 25 is not abutted, the return spring 35 will elastically reset and drive the piston plate 24 to slide reversely and reset. Therefore, the device groove 23 will suck in external air through the second air inlet hole 27. When the air passes through the second air inlet hole 27, the device groove 23 and the second air exhaust hole 28, it will take away part of the temperature on the inner ring of the bearing 18, so that the bearing 18 can be assisted in heat dissipation, and it is not easy to increase the frictional resistance due to high temperature. Thus, the operation of the energy-saving motor will be more labor-saving, and further, the operation energy consumption of the energy-saving motor can be reduced, making its operation more energy-saving and environment-friendly. Moreover, the bearing 18 is not easy to be damaged due to high temperature, reducing the maintenance cost.

[0036] The connecting part will blow air into the multiple annular cavities 20 in sequence. The multiple annular cavities 20 will cause the multiple lower air holes 21 in the strip-shaped groove 11 to exhaust air in sequence. The multiple lower air holes 21 will gradually blow out some dust and sand grains in the strip-shaped groove 11, preventing excessive fine dust in the strip-shaped groove 11 from caking, ensuring the buffering effect of the sand grains in the strip-shaped groove 11, enabling the bottom plate 2 to maintain a good anti-impact effect, significantly increasing its service life and reducing the maintenance cost. Moreover, when the air passes through the annular cavity 20 and the lower air holes 21, it can also assist in dissipating heat from the bottom plate 2, preventing the bottom plate 2 from being damaged and deformed due to high temperature, reducing the damage probability, and further increasing the service life of the bottom plate 2. Since the upper air holes 14 also exhaust air into the strip-shaped groove 11, when the upper air holes 14 and the lower air holes 21 exhaust air simultaneously, the blown dust and sand grains will roll on the surfaces of the strip-shaped groove 11 and the bottom plate 2, thereby reducing the frictional resistance on the surface of the bottom plate 2, enabling the material to be thrown out of the flow channel 6 more efficiently, and reducing the friction on the bottom plate 2.

[0037] It should be specifically noted that the multiple lower air holes 21 in the strip-shaped groove 11 will exhaust air in turn, rather than simultaneously.

[0038] The above-mentioned connecting part includes several groups of arc-shaped covers 29 fixedly connected to the outer wall of the inner ring of the bearing 18. The exhaust ends of the multiple second exhaust holes 28 are respectively connected to the several groups of arc-shaped covers 29. Under the action of the several groups of arc-shaped covers 29, the multiple second exhaust holes 28 are divided into several groups. It can also be understood that the multiple second exhaust holes 28 are evenly divided into several groups according to the circumference, and each group communicates with one arc-shaped cover 29; the lower end of the bottom plate 2 is fixedly connected with a lower annular cover 22 that is vertically aligned with the multiple annular cavities 20. A conveying hole 34 is provided in the annular cavity 20 and penetrates to the lower annular cover 22 below it. The multiple lower annular covers 22 are respectively connected to the several arc-shaped covers 29 through connecting pipes 30. In this application, the arc-shaped covers 29 are arranged in four groups.

[0039] Specifically, since the multiple second exhaust holes 28 are sequentially divided into several groups and are respectively connected to the several arc-shaped covers 29 distributed in a circle, the second exhaust holes 28 that exhaust air in sequence will cause the several arc-shaped covers 29 to exhaust air in sequence through the connecting pipes 30. The several connecting pipes 30 will exhaust air to the multiple lower annular covers 22 in sequence. The multiple lower annular covers 22 will exhaust air into the multiple annular cavities 20 in sequence through the conveying holes 34. The multiple annular cavities 20 will cause the multiple lower air holes 21 in the strip-shaped groove 11 to exhaust air in sequence.

[0040] A protection pipe 33 is fixedly connected between the above-mentioned top plate 3 and the bottom plate 2. Protective covers 32 are fixed to the top of the top plate 3 and the lower end of the bottom plate 2. The connecting pipe 30 is located inside the protection pipe 33 and the protective covers 32. Therefore, the protection pipe 33 and the protective covers 32 can effectively isolate and protect the connecting pipe 30, preventing the connecting pipe 30 from being damaged by the impact of the material.

[0041] Since the aerodynamic force of the upper air holes 14 comes from the impact force received by the material distribution cone 7, and the aerodynamic force of the lower air holes 21 comes from the jitter of the rotor, the use of the entire device is more energy-saving and environmentally friendly.

[0042] When the present invention is installed, the support plate 31 is fixed on the fixing frame, and the main shaft 1 is connected to the output end of the energy-saving motor. Therefore, during use, the main shaft 1 is driven to rotate by the energy-saving motor, and the main shaft 1 can drive the top plate 3, the bottom plate 2, the throwing plate 5 and the material distribution cone 7 to rotate synchronously, and will drive the inner ring of the bearing 18 to rotate within the outer ring. When feeding, the material will sequentially enter between the top plate 3 and the bottom plate 2 from the guide pipe 16 and the feeding groove 4, and will fall onto the material distribution cone 7. Under the action of centrifugal force, the material will enter the flow channel 6 and finally be thrown out from the outlet of the flow channel 6. When the material falls onto the material distribution cone 7, the material distribution cone 7 will drive the buffer column 9 to slide downward in the buffer groove 8 due to the downward impact force, and compress the buffer spring 10. The frictional force between the buffer column 9 and the inner wall of the buffer groove 8 and the elastic force of the buffer spring 10 can buffer part of the impact force received by the material distribution cone 7. Therefore, the material distribution cone 7 is not likely to be damaged due to the impact, and the impact force received by the bottom plate 2 is reduced, the service life is extended, the overall maintenance cost is reduced, and the use is more energy-saving and environmentally friendly. When the material distribution cone 7 is not subject to a downward impact force or the impact force decreases, the buffer spring 10 will elastically reset and drive the buffer column 9 and the material distribution cone 7 to lift and reset upward.

[0043] When the buffer column 9 moves downward, the buffer column 9 will compress the air in the buffer groove 8, and the air in the buffer groove 8 will be delivered to the first connection hole 15 through the first exhaust hole 13, and finally will be blown to the top surface of the bottom plate 2 from the end of the upper air hole 14. On the one hand, when the air flow passes through the first exhaust hole 13, the first connection hole 15 and the upper air hole 14, part of the temperature on the material distribution cone 7 can be taken away, thereby completing the auxiliary heat dissipation of the material distribution cone 7, so that the material distribution cone 7 is not likely to generate intense heat due to frequent impacts, and further improves the service life of the material distribution cone 7. On the other hand, when the air flow blows to the upper end surface of the bottom plate 2, the bottom plate 2 can also obtain the effect of auxiliary heat dissipation, so that the service life of the bottom plate 2 can also be improved. When the buffer column 9 moves upward and resets, a negative pressure will be generated in the buffer groove 8, and external air will be sucked through the first intake hole 12.

[0044] During the rotation of the rotor, the upper and lower upper annular covers 17 and the bearings 18 can limit the upper and lower ends of the rotor, making the rotation process of the rotor more stable and less likely to jump or swing (although it cannot be completely avoided in practice). The reason for the jumping and swinging is that the material cannot enter completely evenly between the bottom plate 2 and the top plate 3, which will cause the center of gravity of the rotor to be unstable. When the swinging force of the rotor is greater than that of the positioning spring 19, the material guide pipe 16 and the main shaft 1 will push the bearing 18 to revolve around the axis of the rotor in the cavity of the upper annular cover 17. Due to the limitation of the positioning spring 19, the outer ring of the bearing 18 will only revolve around the axis of the rotor and will not rotate around its own axis, that is, the bearing 18 will radially jump in the upper annular cover 17. At this time, the frictional force between the outer ring of the bearing 18 and the upper annular cover 17 and the positioning spring 19 can buffer part of the force.

[0045] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content to form equivalent embodiments within the scope of the technical solution of the present invention. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. The rotor structure of an energy-saving vertical shaft impact crusher, comprising a main shaft (1) connected to the output end of an energy-saving motor, characterized in that, It further includes: A bottom plate (2), fixedly connected to the top end of the main shaft (1), wherein, above the bottom plate (2), there is a top plate (3). An inlet chute (4) is provided at the upper end of the top plate (3). Four groups of circumferentially distributed throwing plates (5) are fixedly connected between the top plate (3) and the bottom plate (2). The four groups of throwing plates (5) form a circumferentially distributed flow channel (6) between the top plate (3) and the bottom plate (2); A material distributing cone (7), arranged at the upper end of the bottom plate (2) and located in the middle of the four groups of flow channels (6), wherein, the top of the material distributing cone (7) faces the inlet chute (4), and a buffer component for buffering the material distributing cone (7) is provided on the bottom plate (2).

2. The rotor structure of an energy-saving vertical shaft impact crusher according to claim 1, characterized in that The buffer component includes a buffer column (9) fixedly connected to the bottom of the material distributing cone (7). A buffer groove (8) extending into the main shaft (1) is provided on the bottom plate (2). The buffer column (9) is longitudinally slidably installed in the buffer groove (8), and a buffer spring (10) is installed between the buffer column (9) and the inner bottom of the buffer groove (8).

3. The rotor structure of an energy-saving vertical shaft impact crusher according to claim 2, characterized in that, Upper air holes (14) inclined towards the flow channel (6) are provided on the periphery of the material distributing cone (7). A first exhaust hole (13) extending into the material distributing cone (7) is provided at the bottom of the buffer column (9). A first air inlet hole (12) penetrating through to the outer wall of the main shaft (1) is provided in the buffer groove (8). Check valves are fixedly installed in both the first air inlet hole (12) and the first exhaust hole (13). The first exhaust hole (13) is communicated with the upper air hole (14) through a first connection hole (15).

4. The rotor structure of an energy-saving vertical shaft impact crusher according to claim 3, characterized in that, A plurality of equally spaced strip-shaped grooves (11) are provided at the inner bottom of the flow channel (6). The exhaust end of the upper air hole (14) faces into the strip-shaped groove (11). The cross-section of the plurality of strip-shaped grooves (11) along the radial direction of the bottom plate (2) is continuously wavy.

5. The rotor structure of an energy-saving vertical shaft impact crusher according to claim 1, characterized in that, A guide pipe (16) is fixedly connected to the upper port of the inlet chute (4). An upper annular cover (17) is provided around both the guide pipe (16) and the outer wall of the main shaft (1). Bearings (18) are installed on both the guide pipe (16) and the outer wall of the main shaft (1). The outer ring of the bearing (18) is sleeved in the upper annular cover (17), and a positioning spring (19) is installed between the outer ring of the bearing (18) and the inner wall of the upper annular cover (17).

6. The rotor structure of an energy-saving vertical shaft impact crusher according to claim 5, characterized in that, A plurality of coaxially arranged and equally spaced annular cavities (20) are provided in the bottom plate (2). Lower air holes (21) extending into the strip-shaped grooves (11) are provided in the plurality of annular cavities (20). The exhaust end of the lower air hole (21) is inclined towards the outlet direction of the flow channel (6). A linkage part for supplying air to the plurality of annular cavities (20) in sequence is provided in the bearing (18).

7. The rotor structure of an energy-saving vertical shaft impact crusher according to claim 6, characterized in that, The linkage part includes a plurality of device grooves (23) provided on the outer wall of the inner ring of the bearing (18). Piston plates (24) are slidably installed in the plurality of device grooves (23). A return spring (35) is installed between the piston plate (24) and the inner wall of the device groove (23). A roller (25) is rotatably installed at one end of the piston plate (24) away from the return spring (35), Among them, an annular plate (26) is fixedly connected to the outer wall of the upper annular cover (17), the roller (25) is pressed against the inner wall of the annular plate (26), a second air inlet hole (27) and a second air outlet hole (28) extending into the device groove (23) are provided on the outer wall of the inner ring of the bearing (18), and the second air outlet hole (28) is connected to the annular cavity (20) through a connecting portion.

8. The rotor structure of an energy-saving vertical shaft impact crusher according to claim 7, characterized in that, The connecting portion includes several groups of arc-shaped covers (29) fixedly connected to the outer wall of the inner ring of the bearing (18), the exhaust ends of the plurality of second air outlet holes (28) are respectively communicated with the several groups of arc-shaped covers (29), and the plurality of second air outlet holes (28) are divided into several groups under the action of the several groups of arc-shaped covers (29); A lower annular cover (22) aligned with the plurality of annular cavities (20) up and down is fixedly connected to the lower end of the bottom plate (2), a conveying hole (34) penetrating through the lower annular cover (22) below is provided in the annular cavity (20), and the plurality of lower annular covers (22) are respectively communicated with the several arc-shaped covers (29) through connecting pipes (30).

9. The rotor structure of an energy-saving vertical shaft impact crusher according to claim 8, characterized in that, A protection pipe (33) is fixedly connected between the top plate (3) and the bottom plate (2), protective covers (32) are fixed to the top of the top plate (3) and the lower end of the bottom plate (2), and the connecting pipe (30) is located in the protection pipe (33) and the protective cover (32).

10. The rotor structure of an energy-saving vertical shaft impact crusher according to claim 5, characterized in that, A support plate (31) is fixedly connected to the outer wall of the upper annular cover (17), and a positioning hole is provided on the support plate (31).

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