Horizontal energy-saving double-drive bidirectional dynamic grading sand mill

Abstract

The invention discloses a horizontal energy-saving double-drive bidirectional dynamic grading sand mill, and relates to the field of sand mills, the horizontal energy-saving double-drive bidirectional dynamic grading sand mill comprises a machine body and a grinding rotor rotatably arranged in the machine body and used for grinding materials, and a discharging mechanism is arranged on the machine body; the discharging mechanism comprises a discharging barrel arranged above the machine body, a rectifying rotor and a grading component are rotationally arranged in the discharging barrel, an arc-shaped hole is formed in the rectifying rotor, and the grading component is located above the rectifying rotor. According to the horizontal energy-saving double-drive bidirectional dynamic grading sand mill provided by the invention, a grinding medium and a ground material can be extruded into the discharging barrel under the action of feeding pressure, and the rectification rotor changes vertical rotation of the ground material into horizontal rotation, so that the grinding medium with relatively large mass can be thrown out from an arc-shaped hole in the rectification rotor; and the grinding media fall back into the machine body under the action of gravity, so that the grinding media distributed around the grading component can be greatly reduced, and the discharging rate of the materials is increased.

Description

Technical Field

[0001] The invention relates to the field of sand mills, and in particular to a horizontal energy-saving double-drive bidirectional dynamic classification sand mill. Background Art

[0002] As is known, a sand mill is a device used for fine grinding and dispersing materials, and is widely used in coatings, inks, pigments, cosmetics, food, medicine and other industries. When the sand mill is working, the material and the grinding medium are placed in the grinding cylinder, and the agitator rotates at high speed, driving the grinding medium to strongly shear, collide and rub the material, so that the material particles gradually become smaller and achieve the required fineness and uniformity.

[0003] For example, the Chinese patent document with publication number CN113546731A, publication date 2021-10-26, and titled "A New Type of Nano Sand Mill" includes: a frame; a grinding cylinder, which is arranged on the frame, and a feed port is arranged at the left end of the grinding cylinder; a separation and discharging assembly, including a driving mechanism, a main shaft with a discharging channel inside, a plurality of separators, and a discharging and classifying wheel; a discharging port is opened at the left end of the main shaft outside the grinding cylinder, and the right end of the main shaft horizontally penetrates the grinding cylinder and extends into the grinding cylinder and is driven to rotate by the driving mechanism; a plurality of separators are located in the grinding cylinder and sleeved on the main shaft, and the discharging and classifying wheel is arranged on the right end of the main shaft and is connected to each other; a discharging screen is detachably arranged in the discharging and classifying wheel, and the discharging and classifying screen is located between the main shaft and the discharging and classifying wheel. The present invention makes the material grinding path longer, the particle size distribution narrower, and the efficiency higher.

[0004] The currently used horizontal sand mill has a horizontal discharge mode. The grinding medium is affected by gravity and the same direction as the feed pressure. The grinding medium will be distributed around the grading component together with the ground slurry. The grinding medium is easy to cause blockage of the grading component, thereby reducing the discharge rate of the material. Summary of the invention

[0005] The purpose of the present invention is to provide a horizontal energy-saving dual-drive bidirectional dynamic classification sand mill to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A horizontal energy-saving dual-drive bidirectional dynamic grading sand mill comprises a machine body and a grinding rotor rotatably arranged inside the machine body for grinding materials, and a discharging mechanism is arranged on the machine body;

[0008] The discharging mechanism comprises a discharging cylinder arranged above the machine body, a rectifier rotor and a grading component are rotatably arranged inside the discharging cylinder, an arc hole is opened on the rectifier rotor, and the grading component is located above the rectifier rotor.

[0009] The above-mentioned horizontal energy-saving dual-drive bidirectional dynamic grading sand mill, the grading component includes a grading motor, the output shaft of the grading motor is provided with a discharge hole, the output shaft is fixedly connected with a first grading wheel, and the first grading wheel is connected to the discharge hole.

[0010] In the above-mentioned horizontal energy-saving dual-drive bidirectional dynamic classifying sand mill, the classifying component further includes a second classifying wheel, and the second classifying wheel is located outside the first classifying wheel.

[0011] The above-mentioned horizontal energy-saving dual-drive bidirectional dynamic grading sand mill also includes a lifting mechanism for driving the discharging mechanism to move vertically.

[0012] The above-mentioned horizontal energy-saving dual-drive bidirectional dynamic classifying sand mill, the second classifying wheel includes a top plate and a bottom plate, and a classifying rod is radially slidably arranged between the top plate and the bottom plate;

[0013] The utility model also comprises a power assembly for driving the grading rod to slide.

[0014] The above-mentioned horizontal energy-saving dual-drive bidirectional dynamic grading sand mill, the power assembly includes a centrifugal rod, the top plate includes a connecting plate and a driving plate rotatably connected to the connecting plate, a spring is arranged between the centrifugal rod and the connecting plate, and a first connecting rod is rotatably arranged between the centrifugal rod and the driving plate;

[0015] It also includes a transmission member for converting the kinetic energy of the driving plate's rotation into the sliding of the grading rods.

[0016] The above-mentioned horizontal energy-saving dual-drive bidirectional dynamic grading sand mill, the transmission part includes a first transmission rod fixedly connected to the grading rod, a driving groove is provided on the driving plate, the first transmission rod is slidably connected to the driving groove, an adapting groove is provided on the bottom plate, the grading rod is also fixedly connected to the second transmission rod, and the second transmission rod is slidably connected to the adapting groove.

[0017] The above-mentioned horizontal energy-saving dual-drive bidirectional dynamic grading sand mill also includes a drive motor, and the drive motor is directly connected to the grinding rotor.

[0018] The above-mentioned horizontal energy-saving dual-drive bidirectional dynamic grading sand mill, the grading rod includes a first part and a second part which are rotatably connected to each other; and also includes a driving component for driving the second part to rotate relative to the first part.

[0019] The above-mentioned horizontal energy-saving dual-drive bidirectional dynamic grading sand mill, the first transmission rod is rotatably connected to the first part, the driving assembly includes a second connecting rod fixed to the first transmission rod, a third connecting rod is rotatably arranged on the driving plate, the second connecting rod is hinged to the third connecting rod, a support rod is arranged on the first transmission rod, and the second part is fixed to the support rod.

[0020] In the above technical scheme, the horizontal energy-saving dual-drive bidirectional dynamic grading sand mill provided by the present invention has a discharge barrel arranged above the machine body, and a rectifier rotor is rotatably arranged inside the discharge barrel. The grinding medium and the ground material will be squeezed into the discharge barrel under the action of the feed pressure, during which time they will pass through the rotating rectifier rotor. The rectifier rotor changes the vertical rotation of the ground material into horizontal rotation, and can throw out the grinding medium with larger mass from the arc hole inside the rectifier rotor, and fall back into the machine body under the action of gravity, which can greatly reduce the distribution of the grinding medium around the grading components to increase the material discharge rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of a side view structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic cross-sectional view of an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of a cross-sectional structure from another perspective provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the overall structure of a rectifier rotor provided in an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a top view of the rectifier rotor structure provided in an embodiment of the present invention;

[0027] Figure 6 A schematic cross-sectional structural diagram of a grading component provided in an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the overall structure of a grading component provided by another embodiment of the present invention;

[0029] Figure 8 An exploded schematic diagram of a grading component provided in yet another embodiment of the present invention;

[0030] Fig. 9 A partial cross-sectional structural schematic diagram provided for yet another embodiment of the present invention;

[0031] Fig.10 A schematic diagram of the movement process of the grading rod provided in yet another embodiment of the present invention;

[0032] Fig.11 A schematic diagram of a connection structure between a first transmission rod and a second part provided by another embodiment of the present invention;

[0033] Fig.12 A schematic diagram of a rotation process of a first transmission rod provided by another embodiment of the present invention;

[0034] Fig.13 for Figure 2 A is an enlarged schematic diagram of the local structure at center A;

[0035] Fig.14 for Figure 8 Enlarged schematic diagram of the local structure at point B in the middle.

[0036] Description of reference numerals:

[0037] 1. Machine body; 2. Grinding rotor; 3. Discharging barrel; 4. Rectifier rotor; 5. Arc hole; 6. Classifying motor; 7. Output shaft; 8. Discharging hole; 9. First classifying wheel; 10. First channel; 11. Second channel; 12. Second classifying wheel; 13. Third channel; 14. Lifting mechanism; 15. Top plate; 1501. Connecting plate; 1502. Driving plate; 16. Bottom plate; 17. Classifying rod; 1701. First part; 1702. Second part; 18. Centrifugal rod; 19. Spring; 20. First connecting rod; 21. Mounting groove; 22. First transmission rod; 23. Driving groove; 24. Adapter groove; 25. Second transmission rod; 26. Second connecting rod; 27. Third connecting rod; 28. Support rod; 29. ​​First abutting part; 30. Second abutting part; 31. Driving motor. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] In the description of the present invention, it is to be understood that Figure 2The position of the middle discharge barrel 3 relative to the machine body 1 is up, and vice versa. The terms "center", "width", "degree", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0040] Reference Figure 1-14 The horizontal energy-saving dual-drive bidirectional dynamic grading sand mill provided in an embodiment of the present invention comprises a machine body 1 and a grinding rotor 2 rotatably arranged inside the machine body 1 for grinding materials, and a discharging mechanism is arranged on the machine body 1; the discharging mechanism comprises a discharging barrel 3 arranged above the machine body 1, and a rectifier rotor 4 and a grading component are rotatably arranged inside the discharging barrel 3, an arc hole 5 is opened on the rectifier rotor 4, and the grading component is located above the rectifier rotor 4.

[0041] Specifically, a grinding chamber is provided inside the machine body 1, and the grinding part of the grinding rotor 2 extends into the grinding chamber. When grinding the material, the material and the grinding medium (preferably zirconium balls) are added into the grinding chamber, and the grinding rotor 2 is driven to rotate at a high speed by a power source, thereby driving the grinding rotor 2 to rotate at a high speed, and the grinding rotor 2 drives the grinding medium to move, and the shear force and impact force generated by the collision of the grinding media grind the material particles, and the ground material passes through a separation device (such as a screen or a gap separator) to separate the grinding medium from the material, and the grinding medium remains in the chamber for continued use, and the ground material is discharged from the discharge port, so that the grinding process is completed. This is a prior art and will not be described in detail. One of the core innovations of the embodiment of the present invention is that a discharge barrel 3 is arranged above the machine body 1, and a rectifier rotor 4 is rotatably arranged inside the discharge barrel 3, which is also driven by a power source such as a motor. The purpose of such a setting is that the grinding medium and the ground material will be squeezed into the discharge barrel 3 under the action of the feed pressure, during which time they will pass through the rotating rectifier rotor 4. The rectifier rotor 4 changes the vertical rotation of the ground material into horizontal rotation, and can throw out the grinding medium with a larger mass from the arc hole 5 inside the rectifier rotor 4, and fall back into the machine body 1 under the action of gravity, which can greatly reduce the distribution of the grinding medium around the grading component to increase the discharge rate of the material.

[0042] It should be noted that it also includes a drive motor, which is directly connected to the grinding rotor. The drive motor can be a permanent magnet motor, which is directly connected to the grinding rotor 2. In this way, the grinding rotor 2 can be directly driven by the permanent magnet motor, reducing the energy loss caused by indirect transmission such as belt transmission, which is more energy-efficient.

[0043] Preferably, the grading component includes a grading motor 6, the output shaft 7 of the grading motor 6 is provided with a discharge hole 8, a first grading wheel 9 is fixedly connected to the output shaft 7, and the first grading wheel 9 is connected to the discharge hole 8. Specifically, the grading motor 6 is arranged vertically, and its output shaft 7 passes through the inside of the discharge barrel 3, and a discharge pipe is rotatably connected to the output shaft 7. The discharge hole 8 is coaxially arranged with the output shaft 7, and a first channel 10 is provided on its side wall. The first grading wheel 9 is coaxially fixed to the outside of the output shaft 7, which is composed of a plurality of partitions, and a second channel 11 is provided between adjacent partitions for only the passage of ground materials, so that the internal space of the discharge barrel 3 is connected to the discharge hole 8 through the first channel 10 and the second channel 11. The rectifier rotor 4 should be no less than one, and preferably two, and is fixedly connected to the output shaft 7, and is located below the first grading wheel 9. The purpose of such a setting is that while the grinding rotor 2 rotates to grind the material, the grading motor 6 is turned on, which drives the output shaft 7 to rotate at a high speed. The advantage of such a setting is that First, the output shaft 7 will drive the rectifier rotor 4 to rotate at a high speed to achieve the rectification effect. Second, the output shaft 7 will drive the first classifying wheel 9 to rotate at a high speed. The grinding media with a larger mass will move away from the first channel 10 under the action of centrifugal force to avoid the grinding media from entering the discharge hole 8, while the ground materials with a smaller mass will enter the discharge hole 8 through the first channel 10 and the second channel 11 under the action of the feed pressure to achieve discharge. Third, the rectifier rotor 4 is driven by an independent classifying motor 6, and different centrifugal forces are generated by adjusting the speed to adapt to the separation of grinding media and ground materials with different solid contents (referring to the mass percentage of the remaining part of the emulsion or coating after drying under specified conditions), different viscosities, different particle sizes, and different slurry specific gravities.

[0044] Furthermore, the grading component further includes a second grading wheel 12, and the second grading wheel 12 is located outside the first grading wheel 9. Specifically, the second grading wheel 12 is cylindrical, and a plurality of third channels 13 are opened on its side wall, and the width of the third channel 13 is greater than the width of the second channel 11, that is, both the grinding medium and the ground material can enter the second grading wheel 12. The effect of such a setting is that part of the grinding medium and the material are pushed into the second grading wheel 12 by the feed pressure, and the centrifugal force generated by the high-speed rotation of the second grading wheel 12 throws out part of the grinding medium with a larger mass from the third channel 13, and the remaining small amount of grinding medium is distributed on the outer surface of the circumference of the first grading wheel 9. Since the high-speed rotation of the first grading wheel 9 generates a large centrifugal force, and the mass of the grinding medium is greater than the mass of the ground material, it is blocked outside the first grading wheel 9 and thrown out by the first grading wheel 9, and the ground material with a smaller mass is discharged through the second channel 11, the first channel 10 and the discharge hole 8.

[0045] Furthermore, it also includes a lifting mechanism 14 for driving the discharging mechanism to move vertically. The lifting mechanism 14 can be an existing linear reciprocating drive assembly such as a vertically arranged hydraulic drive, which is used to lift the grading component above the discharging cylinder 3 to facilitate maintenance and repair of the grading component.

[0046] It should be noted that when the rotation speed of the grading motor 6 becomes abnormally slow, the centrifugal force it provides to the grinding medium will become smaller, which makes it easy for more grinding media to enter between the first grading wheel 9 and the second grading wheel 12, thereby blocking the second channel 11, so that the discharge efficiency is reduced. As another embodiment of the present invention, the second grading wheel 12 includes a top plate 15 and a bottom plate 16, and a grading rod 17 is radially slidably arranged between the top plate 15 and the bottom plate 16; it also includes a power component for driving the grading rod 17 to slide. Specifically, the top plate 15 and the bottom plate 16 are both fixed to the output shaft 7, there are multiple grading rods 17, and the multiple grading rods 17 are arranged in an array between the top plate 15 and the bottom plate 16, and a gap is set between adjacent grading rods 17, which is the third channel 13. The power component can be an existing linear reciprocating drive component such as multiple cylinders, and the multiple cylinders are respectively connected to the multiple grading rods 17. The purpose of such a setting is that when the speed of the output shaft 7 is detected to be slow by a speed sensor or other structure, the multiple grading rods 17 are controlled by the power component to move synchronously toward the central axis of the output shaft 7. Since the size of the grading rods 17 is unchanged, when the multiple grading rods 17 move toward the central axis of the output shaft 7, the circumference of the virtual circle formed between the multiple grading rods 17 will be reduced, which will also reduce the width of the third channel 13. At this time, the grinding medium will not be able to enter the second grading wheel 12, thereby avoiding congestion of the first grading wheel 9 as much as possible. When the speed of the output shaft 7 returns to normal, the multiple grading rods 17 are controlled by the power component to move synchronously in the opposite direction to drive the grading rods 17 to reset.

[0047] As an alternative solution for the above-mentioned multiple cylinders to drive the movement of multiple grading rods 17 respectively, preferably, the power assembly includes a centrifugal rod 18, the top plate 15 includes a connecting plate 1501 and a driving plate 1502 rotatably connected to the connecting plate 1501, a spring 19 is arranged between the centrifugal rod 18 and the connecting plate 1501, and a first connecting rod 20 is rotatably arranged between the centrifugal rod 18 and the driving plate 1502; and it also includes a transmission member for converting the kinetic energy of the rotation of the driving plate 1502 into the sliding of the grading rod 17. Specifically, the connecting plate 1501 is approximately inverted barrel-shaped and fixedly connected to the output shaft 7. The driving plate 1502 is in the shape of a circular plate and is located inside the connecting plate 1501. It is rotatably connected to the connecting plate 1501, and an annular groove and a limiting ring are provided between the two to prevent the two from being separated from each other. The centrifugal rod 18 is arranged along the radial direction of the connecting plate 1501, and the centrifugal rod 18 is approximately a rectangular rod. A counterweight block can be provided at one end away from the connecting plate 1501 to increase the centrifugal force of the centrifugal rod 18. The inner wall of the discharge barrel 3 is opened. An annular mounting groove 21 is provided, the centrifugal rod 18 penetrates the side wall of the connecting plate 1501 and extends to the inside of the mounting groove 21, the connecting plate 1501 has an extension protruding downward near the center of the circle, one end of the spring 19 is fixedly connected to the centrifugal rod 18, and the other end is fixedly connected to the extension, there are multiple centrifugal rods 18, and the multiple centrifugal rods 18 are arranged corresponding to the multiple grading rods 17, the upper surface of the driving plate 1502 and the side of the centrifugal rod 18 are provided with a rotating shaft, the two ends of the first connecting rod 20 are respectively rotatably connected to the two rotating shafts, and the transmission member can be a cam or the like. The purpose of such a configuration is that when the output shaft 7 rotates normally, the centrifugal force on the centrifugal rod 18 is greater than the elastic force of the spring 19. At this time, the centrifugal rod 18 will be located away from the central axis of the output shaft 7 (based on the convenience of description, hereinafter referred to as the central axis). Similarly, the grading rod 17 is also located away from the central axis of the output shaft 7. When the speed of the output shaft 7 slows down, the centrifugal force on the centrifugal rod 18 will become smaller. When the centrifugal force is less than the pulling force of the spring 19, it will be pulled toward the central axis by the spring 19, which will push the first connecting rod 20 to rotate. And under the action of the first connecting rod 20, the driving plate 1502 is pushed to rotate around the central axis, and under the action of the transmission member, multiple grading rods 17 are synchronously pushed toward the direction of the central axis. When the speed of the output shaft 7 returns to normal, that is, the centrifugal force exerted on the centrifugal rod 18 is greater than the elastic force of the spring 19, the centrifugal rod 18 moves away from the central axis and drives the driving plate 1502 to rotate in the opposite direction under the action of the first connecting rod 20, which will drive the grading rod 17 to slide in the opposite direction to realize passive switching of the position of the grading rod 17.

[0048] Preferably, the transmission member includes a first transmission rod 22 fixedly connected to the grading rod 17, a driving groove 23 is provided on the driving plate 1502, the first transmission rod 22 is slidably connected to the driving groove 23, an adapting groove 24 is provided on the bottom plate 16, and a second transmission rod 25 is also fixedly connected to the grading rod 17, and the second transmission rod 25 is slidably connected to the adapting groove 24. Specifically, the first transmission rod 22 is fixedly connected to the top end of the grading rod 17, and the driving groove 23 is an arc-shaped groove, and the number of the arc-shaped grooves is arranged correspondingly with respect to the grading rod 17. The second transmission rod 25 is fixedly connected to the bottom end of the grading rod 17, and the adapter grooves 24 are arranged along the radial direction of the bottom plate 16, and the number of the adapter grooves 24 is also arranged correspondingly with respect to the grading rod 17. The top end of the grading rod 17 can be provided with an extension plate to block the driving groove 23. The effect of such a setting is that when the speed of the output shaft 7 is normal, the first transmission rod 22 is located at the end of the arc-shaped groove away from the central axis. At this time, when the output shaft 7 rotates, the bottom plate 16 will be driven to rotate. Under the action of the connection between the second transmission rod 25 and the adapter groove 24, the grading rod 17 and the first transmission rod 22 will be driven to rotate synchronously around the central axis. Under the action of the abutment between the first transmission rod 22 and the arc-shaped groove, the driving plate 1502 will be driven as shown in FIG. Figure 6 As shown, it rotates clockwise. When the speed of the output shaft 7 decreases, the centrifugal rod 18 will slide toward the direction of the central axis. At this time, under the action of the first connecting rod 20, the driving plate 1502 will be pushed to rotate further clockwise relative to the grading rod 17, which will make the inner wall of the arc groove abut against the first transmission rod 22, and drive the second transmission rod 25 and the grading rod 17 to slide along the adapter groove 24 toward the direction of the central axis. When the speed of the output shaft 7 returns to normal, it will drive the centrifugal rod 18 to move in the opposite direction and pull the first connecting rod 20 in the opposite direction to drive the driving plate 1502 to rotate in the opposite direction and drive multiple grading rods 17 to slide in the opposite direction synchronously. In this way, while the driving plate 1502 rotates, multiple grading rods 17 can be driven to slide back and forth synchronously along the direction of the adapter groove 24.

[0049] Furthermore, the first transmission rod 22 and the second transmission rod 25 are not coaxial, so that the grading rod 17 will not rotate around the center of the first transmission rod 22 and the second transmission rod 25, thereby preventing the grading rod 17 from rotating itself during the sliding process.

[0050] When the speed of the output shaft 7 is reduced so that the third channel 13 becomes smaller, the grinding medium between the second classifying wheel 12 and the first classifying wheel 9 cannot be discharged. As another embodiment of the present invention, the classifying rod 17 includes a first part 1701 and a second part 1702 that are rotatably connected to each other; and also includes a driving component for driving the second part 1702 to rotate relative to the first part 1701. Specifically, the connection position between the first part 1701 and the second part 1702 is an arc surface, the first transmission rod 22 and the second transmission rod 25 are both fixed to the first part 1701, and the second part 1702 can rotate along the arc surface of the connection position. The driving component can be an existing structure that provides a rotating force such as a motor. The effect of such a setting is that when the speed of the output shaft 7 is reduced, the first part 1701 is located near the central axis. At this time, the sliding of the first part 1701 will drive the second part 1702 to be synchronously located near the central axis. At this time, the second part 1702 is controlled by the driving component as follows. Fig.10 The second part 1702 rotates clockwise as shown, that is, the second part 1702 will swing toward the central axis at this time. The advantages brought by this are: first, the space inside the third channel 13 is increased, and the second part 1702 will extend into the internal space when swinging toward the central axis to intercept the grinding medium, and make part of the grinding medium between the second classifying wheel 12 and the first classifying wheel 9 temporarily stored in the inner side of the third channel 13. At the same time, the grading rod 17 is controlled to move intermittently by the power component to intermittently open the third channel 13, and the grinding medium can be discharged uniformly at this time. Secondly, at the same time, the second part 1702 is controlled to rotate in the opposite direction by the driving component. During the reverse swinging of the second part 1702, a driving force will be provided to the grinding medium to accelerate the discharge of the grinding medium.

[0051] As another embodiment of the present invention, the first transmission rod 22 is rotatably connected to the first part 1701, the driving assembly includes a second connecting rod 26 fixedly connected to the first transmission rod 22, a third connecting rod 27 is rotatably provided on the driving plate 1502, the second connecting rod 26 is hinged to the third connecting rod 27, a support rod 28 is provided on the first transmission rod 22, and the second part 1702 is fixedly connected to the support rod 28. Specifically, the second connecting rod 26 is fixedly connected to the outer peripheral surface of the first transmission rod 22 and is close to the top end of the first transmission rod 22. The third connecting rod 27 is rotatably arranged on the upper surface of the driving plate 1502 through a fixed axis, and the second connecting rod 26 and the third connecting rod 27 are hinged at one end close to each other. The first transmission rod 22 extends to the inside of the first part 1701 and can rotate relative to the first part 1701. The support rod 28 is fixedly connected to the outer peripheral surface of the first transmission rod 22. An avoidance hole is provided on the side wall of the first part 1701. The end of the support rod 28 away from the first transmission rod 22 passes through the avoidance hole and is fixedly connected to the second part 1702. Since the swing amplitude of the second part 1702 is small, the avoidance hole will not be exposed during the swinging process. In this embodiment, the axis of rotation of the second part 1702 relative to the first part 1701 is coaxial with the axis of the first transmission rod 22. The purpose of such a setting is When the speed of the output shaft 7 decreases, it will drive the driving plate 1502 to rotate around the central axis relative to the connecting plate 1501. At this time, it will drive the fixed shaft and the third connecting rod 27 to rotate relative to the first transmission rod 22, and produce a pulling effect on the second connecting rod 26. Since the first transmission rod 22 will not rotate along the central axis, the second connecting rod 26 will pull the first transmission rod 22 to rotate itself for adaptation, thereby driving the support rod 28 to rotate along the center of the first transmission rod 22, and under the action of the support rod 28, drive the second part 1702 to swing synchronously, thereby realizing the passive swing of the second part 1702. When the speed of the output shaft 7 returns to normal, it will drive the driving plate 1502 to rotate in the opposite direction, thereby driving the first transmission rod 22 to rotate in the opposite direction under the action of the second connecting rod 26 and the third connecting rod 27, and then drive the second part 1702 to rotate in the opposite direction for resetting.

[0052] Furthermore, the first abutment 29 on the centrifugal rod 18 and the second abutment 30 are provided on the discharge cylinder 3 . When the grading rod 17 is located close to the central axis of the output shaft 7 , the second abutment 30 is located on the movement stroke of the first abutment 29 . Specifically, the first abutment 29 is located on the lower surface of the centrifugal rod 18, which is an arcuate surface. The second abutment 30 is arranged on the side wall of the mounting groove 21. There are preferably two centrifugal rods 18, and the two centrifugal rods 18 are symmetrically arranged about the central axis. The effect of such an arrangement is that when the output shaft 7 rotates normally, the distance from the first abutment 29 to the central axis is greater than the distance from the second abutment 30 to the central axis, that is, at this time, the first abutment 29 will not contact the second abutment 30. When the speed of the output shaft 7 decreases, the centrifugal rod 18 will slide toward the direction of the central axis and drive the first abutment 29 to move synchronously. At this time, the second abutment 30 is located on the movement stroke of the arcuate surface of the first abutment 29. When the first abutment 29 rotates, its arcuate surface will abut against the second abutment 30. The second abutment The reaction force provided by 30 will drive the first abutment portion 29 to move in the direction away from the central axis, accumulate force in the spring 19, and drive the centrifugal rod 18 to move synchronously, and drive the grading rod 17 to move in the direction away from the central axis through the transmission member to increase the size of the third channel 13, that is, the third channel 13 is passively and intermittently opened at this time to facilitate the discharge of the grinding medium. When the first abutment portion 29 and the second abutment portion 30 are abutted, the elastic force of the spring 19 is released, which will drive the centrifugal rod 18 to move in the opposite direction, and drive the grading rod 17 to move in the direction of the central axis to achieve the resetting of the grading rod 17. Since two centrifugal rods 18 and two first abutment portions 29 are provided, the third channel 13 will be passively opened twice within one rotation cycle of the output shaft 7.

[0053] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A horizontal energy-saving dual-drive bidirectional dynamic classification sand mill, comprising a machine body and a grinding rotor rotatably arranged inside the machine body for grinding materials, characterized in that: A discharging mechanism is arranged on the machine body; The discharging mechanism comprises a discharging cylinder arranged above the machine body, a rectifier rotor and a grading component are rotatably arranged inside the discharging cylinder, an arc hole is opened on the rectifier rotor, and the grading component is located above the rectifier rotor.

2. The horizontal energy-saving dual-drive bidirectional dynamic classification sand mill according to claim 1 is characterized in that: The grading component comprises a grading motor, an output shaft of the grading motor is provided with a discharge hole, a first grading wheel is fixedly connected to the output shaft, and the first grading wheel is communicated with the discharge hole.

3. The horizontal energy-saving dual-drive bidirectional dynamic classification sand mill according to claim 2 is characterized in that: The classification component further includes a second classification wheel, and the second classification wheel is located outside the first classification wheel.

4. The horizontal energy-saving dual-drive bidirectional dynamic classification sand mill according to claim 1 is characterized in that: It also includes a lifting mechanism for driving the discharging mechanism to move vertically.

5. The horizontal energy-saving dual-drive bidirectional dynamic classification sand mill according to claim 3 is characterized in that: The second grading wheel comprises a top plate and a bottom plate, and a grading rod is radially slidably arranged between the top plate and the bottom plate; The utility model also comprises a power assembly for driving the grading rod to slide.

6. The horizontal energy-saving dual-drive bidirectional dynamic classification sand mill according to claim 5 is characterized in that: The power assembly includes a centrifugal rod, the top plate includes a connecting plate and a driving plate rotatably connected to the connecting plate, a spring is arranged between the centrifugal rod and the connecting plate, and a first connecting rod is rotatably arranged between the centrifugal rod and the driving plate; It also includes a transmission member for converting the kinetic energy of the rotation of the driving plate into the sliding of the grading rods.

7. The horizontal energy-saving dual-drive bidirectional dynamic classification sand mill according to claim 6 is characterized in that: The transmission member includes a first transmission rod fixedly connected to the grading rod, a driving groove is provided on the driving plate, the first transmission rod is slidably connected to the driving groove, an adapting groove is provided on the bottom plate, and a second transmission rod is also fixedly connected to the grading rod, and the second transmission rod is slidably connected to the adapting groove.

8. The horizontal energy-saving dual-drive bidirectional dynamic classification sand mill according to claim 1 is characterized in that: Also included is a drive motor, which is directly connected to the grinding rotor.

9. The horizontal energy-saving dual-drive bidirectional dynamic classification sand mill according to claim 7, characterized in that: The grading rod comprises a first part and a second part which are rotatably connected to each other; and also comprises a driving assembly for driving the second part to rotate relative to the first part.

10. The horizontal energy-saving dual-drive bidirectional dynamic classification sand mill according to claim 9, characterized in that: The first transmission rod is rotatably connected to the first part, the driving assembly includes a second connecting rod fixedly connected to the first transmission rod, a third connecting rod is rotatably arranged on the driving plate, the second connecting rod is hinged to the third connecting rod, a support rod is arranged on the first transmission rod, and the second part is fixedly connected to the support rod.

Images