Rotary impact roller mill

Abstract

A rotary impact roller mill, comprising: an inner holding disk (14), wherein several first sliding slots (17) are evenly provided on the circumferential edge of the inner holding disk; a connecting shaft (18), one end of which is connected to the inner holding disk; an outer holding disk (16), which is connected to the other end of the connecting shaft, several second sliding slots (20) matching the first sliding slots being evenly provided on the circumferential edge of the outer holding disk; and an inner grinding roller, which comprises a grinding roller body (19), first supporting shafts (15) connected to one side of the grinding roller body, and second supporting shafts (21) connected to the other side of the grinding roller body, wherein the first supporting shafts are arranged in the first sliding slots in a floating manner. The rotary impact roller mill can uniformly disperse materials, thereby forming controllable flat material layers having different thicknesses and different flow rates, and the materials are dispersed, ground and impacted, thereby realizing material milling.

Description

A rotary impact roller mill Technical Field

[0001] The invention relates to a rotary impact roller grinding mill, belonging to the field of mechanical grinding mills. Background Art

[0002] Pulverizers are core equipment for preparing powdered materials and are widely used in the building materials, electricity, metallurgy, mining, chemical, and other fields. Existing mechanical mills have a short and uncontrollable retention time of the material to be ground, resulting in low grinding efficiency and high power and steel consumption. Furthermore, the grinding parts are easily damaged by prolonged frictional contact with the material, requiring regular maintenance. Disassembly and repair are time-consuming and wasteful, requiring significant manpower and material resources. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention aims to provide a rotary impact roller mill.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] A rotary impact roller grinding mill comprising:

[0006] An inner supporting plate, wherein a plurality of first sliding grooves are evenly arranged on the circumferential edge of the inner supporting plate;

[0007] A connecting shaft, one end of which is connected to the inner supporting disk;

[0008] An external holding plate connected to the other end of the connecting shaft, wherein a plurality of second sliding grooves matching the first sliding grooves are evenly arranged on the circumferential edge of the external holding plate;

[0009] The inner laminating roller includes a laminating roller body, a first support shaft connected to one side of the laminating roller body, and a second support shaft connected to the other side of the laminating roller body. The first support shaft is floatingly set in the first slide groove, and the second support shaft is floatingly set in the second slide groove.

[0010] Furthermore, it also includes:

[0011] An inner driving shaft, one end of which is connected to the inner supporting disc;

[0012] One end of the driven sprocket is connected to the inner supporting disk, and the other end is connected to the driving sprocket at the output end of the motor 2 through a chain.

[0013] Furthermore, it also includes:

[0014] The blades are arranged in the grinding chamber, mounted on the side of the supporting disk, and arranged on the inner driving shaft.

[0015] Furthermore, it also includes:

[0016] The grinding chamber includes a first side plate, a grinding ring connected to the first side plate and a second side plate connected to the grinding ring. The grinding chamber is equipped with an inner supporting plate, a connecting shaft, an outer supporting plate, an inner grinding roller and blades. The grinding ring is an annular pressure ring with an inner surface cross-section of a V-shaped groove or a U-shaped groove.

[0017] Furthermore, it also includes:

[0018] A first bearing is sleeved on the outer side of the inner drive shaft;

[0019] An outer drive shaft is sleeved on the outer side of the inner drive shaft and is disposed on the first bearing, with one end connected to the grinding chamber;

[0020] The driven sprocket 2 is fixed on the outside of the outer driving shaft and is connected to the driving sprocket 2 at the output end of the motor 1 through a chain.

[0021] Furthermore, it also includes:

[0022] A supporting base, the supporting base being arranged on the mounting base;

[0023] The second bearing is sleeved on the outer side of the outer drive shaft and is arranged on the support base.

[0024] Furthermore, it also includes:

[0025] The discharging rack is in the shape of a horizontally placed frustum, and the end with the larger diameter of the discharging rack is connected to the second side plate;

[0026] The feed hopper includes a feeding part and a blanking part. One end of the blanking part is connected to the feeding part. The blanking part is arranged at an angle. The other end of the blanking part passes through the discharging rack and extends into the grinding chamber and matches the annular groove. A through hole matching the blanking part is opened at the center of the external holding plate.

[0027] Furthermore, the grinding roller body is a disc-shaped structure, the outer edge section of the disc-shaped structure is a V-shaped structure or a U-shaped structure, and the outer edge section of the disc-shaped structure matches the V-shaped groove or U-shaped groove on the inner surface of the grinding ring.

[0028] Furthermore, it also includes:

[0029] A sealing member, wherein the end of the discharge rack with a larger diameter is movably connected to the second side plate, and the sealing member is provided at the connection between the discharge rack and the second side plate;

[0030] The gas-material mixed air flow outlet is connected to the end with the smaller diameter of the discharge rack;

[0031] The support frame is connected to the gas-substance mixed airflow outlet and is movably arranged on the mounting base.

[0032] Furthermore, it also includes:

[0033] A blade mounting member, comprising a blade mounting member body and an air inlet duct provided on the blade mounting member body;

[0034] The air flow channel is arranged in the inner drive shaft and is communicated with the air intake duct.

[0035] Beneficial effects of the present invention:

[0036] The rotary impact roller mill provided by the present invention starts two motors respectively when working, and drives the inner drive shaft and the outer drive shaft to rotate in opposite directions respectively, thereby driving the grinding ring and the inner crushing roller to rotate. The rotation speed can be adjusted as needed, and then the material to be ground is evenly added along the feed hopper. After the material enters the grinding chamber, it will be scattered toward the grinding ring and dispersed in the V-shaped groove or U-shaped groove on the grinding ring. Then, under the impact and crushing of the inner crushing roller, the material is crushed. The crushed tiny particles are driven by the airflow generated by the blades on the supporting plate and discharged from the gas-material mixed airflow outlet, and enter the dust collection device behind it, completing the work of grinding the material.

[0037] The supporting disk in the rotary impact roller mill provided by the present invention drives the inner crushing roller to rotate to generate centrifugal force, and the centrifugal force of different sizes can be generated by adjusting the rotation speed of the driving device. This centrifugal force acts on the material in the grinding ring, which can have the effect of stress decomposition of the material particles. At the same time, the V-shaped or U-shaped cross-section design on the grinding ring and the inner crushing roller utilizes the characteristic that the linear speeds of the bottom and side of the V-shaped or U-shaped part are different during rotation. When the material is between the grinding ring and the inner crushing roller, the material is squeezed and kneaded at the same time, which achieves a good effect of grinding.

[0038] The rotary impact roller mill provided by the present invention is a grinding device that can evenly disperse materials on a grinding ring according to usage needs, and form a material layer with controllable different thicknesses and different flow rates, and disperse, crush and impact the materials to grind the materials, and use flowing air to discharge the formed fine powder.

[0039] The present invention achieves asynchronous counter-rotation of the grinding chamber and the inner rolling roller, thereby driving the material entering the grinding chamber to turn over, spreading the material flat on the grinding ring, thereby facilitating the grinding and extrusion of the material by the inner rolling roller, and improving the grinding effect of the powder making operation.

[0040] The present invention adds blades to the inner drive shaft, and then on the basis of the inner drive shaft driving the inner grinding roller to rotate and grind, the blades can be driven by the inner drive shaft to rotate synchronously, thereby generating airflow. While the airflow flows inside the grinding chamber, the material that has reached a preset fineness during the grinding process is carried out from the gas-material mixed airflow outlet, and the material that has not reached a fine particle size remains in the grinding chamber for grinding until it is crushed and carried out of the grinding chamber by the airflow.

[0041] The present invention designs the first chute, the second chute, the first support shaft and the second support shaft so that during the grinding process, the first support shaft and the second support shaft can be slidably connected in the first chute and the second chute respectively, so that the rolling roller body has a movable and adjustable space, so that the rolling roller body can move in a small range according to the hardness or accumulation degree of the material during the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] FIG1 is a schematic top view of a rotary impact roller mill according to the present invention;

[0044] FIG2 is a schematic diagram of the internal structure of a rotary impact roller mill according to the present invention;

[0045] FIG3 is a schematic diagram of the AA cross-sectional structure of a rotary impact roller mill according to the present invention;

[0046] FIG4 is a schematic structural diagram of point B of a rotary impact roller mill according to the present invention.

[0047] In the figure, 1. mounting base; 2. supporting base; 3. second bearing; 4. external drive shaft; 5. grinding chamber; 6. discharge rack; 7. support rack; 8. seal; 9. gas-material mixed air flow outlet; 10. feed hopper; 11. internal drive shaft; 12. driven sprocket 1; 13. blades; 14. internal supporting disk; 15. first supporting shaft; 16. external supporting disk; 17. first chute; 18. connecting shaft; 19. grinding roller body; 20. second chute; 21. second support shaft; 22. first bearing; 23. driven sprocket 2; 24. motor 1; 25. motor 2; 26. first side plate; 27. grinding ring; 28. second side plate. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] In the first embodiment, referring to Figures 1-4, the present invention provides a technical solution for a rotary impact roller mill, comprising an inner supporting plate 14, wherein a plurality of first chutes 17 are evenly arranged on the circumferential edge of the inner supporting plate 14;

[0050] A connecting shaft 18, one end of which is connected to the inner supporting plate 14;

[0051] The outer holding plate 16 is connected to the other end of the connecting shaft 18. A plurality of second chutes 20 matching the first chutes 17 are evenly provided on the circumferential edge of the outer holding plate 16.

[0052] The inner rolling roller includes a rolling roller body 19, a first support shaft 15 connected to one side of the rolling roller body 19, and a second support shaft 21 connected to the other side of the rolling roller body 19. The first support shaft 15 is floatingly set in the first chute 17, and the second support shaft 21 is floatingly set in the second chute 20. Through the design of the first chute 17, the second chute 20, the first support shaft 15 and the second support shaft 21, during the grinding process, the first support shaft 15 and the second support shaft 21 can be slidably connected in the first chute 17 and the second chute 20 respectively, so that the rolling roller body 19 has a space for movable adjustment, so that the rolling roller body 19 can move in a small range according to the hardness or stacking degree of the material during the grinding process.

[0053] In one embodiment, it further includes:

[0054] The inner driving shaft 11 has one end connected to the inner supporting plate 14;

[0055] One end of the driven sprocket 12 is connected to the inner supporting plate 14, and the other end is connected to the driving sprocket 1 at the output end of the motor 2 25 through a chain.

[0056] In one embodiment, it further includes:

[0057] The blades 13 are disposed in the grinding chamber 5 , mounted on the side of the inner supporting disk 14 , and disposed on the inner driving shaft 11 .

[0058] In one embodiment, it further includes:

[0059] The grinding chamber 5 includes a first side plate 26, a grinding ring 27 connected to the first side plate 26, and a second side plate 28 connected to the grinding ring 27. The grinding chamber 5 is provided with an inner supporting plate 14, a connecting shaft 18, an outer supporting plate 16, an inner grinding roller and a blade 13. The grinding ring is an annular pressure ring with an inner surface cross-section of a V-shaped groove or a U-shaped groove, and the outer edge wall of the grinding roller body 19 in the circumferential direction is a V-shaped or inner arc shape; the grinding ring is provided with an inner V-shaped or U-shaped groove and a V-shaped groove of the grinding roller body 19. Or the design of the U-shaped outer edge wall makes the groove and the outer edge wall fit together, and the material inside the V-shaped or U-shaped groove can be ground by the inner rolling roller of the V-shaped or U-shaped outer edge wall while being squeezed by the inner rolling roller, thereby improving the grinding and crushing effect of the material, and the grinding chamber 5 is fixedly connected to the outer drive shaft 4. When working, the motor 1 24 and the driven sprocket 2 23 drive the grinding chamber 5 to rotate continuously in one direction through the outer drive shaft 4, and its rotation speed can achieve different speeds under the drive of the driving device.

[0060] In one embodiment, it further includes:

[0061] The first bearing 22 is sleeved on the outer side of the inner drive shaft 11;

[0062] The outer drive shaft 4 is sleeved on the outer side of the inner drive shaft 11 and is arranged on the first bearing 22, and one end is connected to the grinding chamber 5;

[0063] The driven sprocket 23 is fixed on the outside of the outer drive shaft 4 and is connected to the driving sprocket 2 at the output end of the motor 1 24 through a chain.

[0064] In one embodiment, it further includes:

[0065] A supporting base 2, the supporting base 2 is arranged on the mounting base 1;

[0066] The second bearing 3 is sleeved on the outside of the outer drive shaft 4 and is arranged on the support base 2 .

[0067] In one embodiment, it further includes:

[0068] The discharge rack 6 is in the shape of a horizontally placed truncated cone, and the end with a larger diameter of the discharge rack 6 is floatingly connected to the second side plate 28;

[0069] The feed hopper 10 includes a feeding part and a blanking part. One end of the blanking part is connected to the feeding part. The blanking part is arranged at an angle. The other end of the blanking part passes through the discharge rack 6 and extends into the grinding chamber 5 and matches the annular groove. A through hole that matches the blanking part is opened at the center of the external supporting plate 16.

[0070] In one embodiment, the grinding roller body is a disc-shaped structure, the outer edge section of the disc-shaped structure is a V-shaped structure or a U-shaped structure, and the outer edge section of the disc-shaped structure matches the V-shaped groove or U-shaped groove on the inner surface of the grinding ring.

[0071] In one embodiment, it further includes:

[0072] The sealing member 8 is movably connected to the second side plate 28 at the end with the larger diameter of the discharge rack 6. The sealing member 8 is provided at the connection between the discharge rack 6 and the second side plate 28.

[0073] The gas-material mixed air flow outlet 9 is connected to the end with a smaller diameter of the discharge rack 6;

[0074] The support frame 7 is connected to the gas-substance mixed airflow outlet 9 and is movably arranged on the mounting base 1 .

[0075] In one embodiment, it further includes:

[0076] A blade mounting member, comprising a blade mounting member body and an air inlet duct provided on the blade mounting member body;

[0077] The air flow channel is provided in the inner drive shaft 11 and is communicated with the air intake duct.

[0078] During operation, first start motor 1 24 and motor 2 25 respectively, driving the grinding chamber 5 and the inner supporting disk 14 and the outer supporting disk 16 to rotate asynchronously in opposite directions, and the speed is adjusted as needed. Then, the material to be ground is evenly added along the feed hopper 10. After entering the grinding chamber 5, the material is sprinkled onto the grinding ring 27 and dispersed in the V-shaped (or U-shaped) groove of the grinding ring 27. The inner supporting disk 14 and the outer supporting disk 16 drive the inner rolling roller to rotate in the opposite direction to the grinding chamber 5. Under the action of the centrifugal force generated during rotation, the inner rolling roller will be pressed against the granular material layer in the V-shaped (or U-shaped) groove in the grinding ring 27. The inner rolling roller impacts and grinds the material layer, and the material is crushed. The crushed tiny particles are driven by the airflow generated by the blades 13 and discharged from the gas-material mixed airflow outlet 9, and enter the dust collection device of the subsequent process, completing the material grinding work.

[0079] The centrifugal force generated when the supporting disk on the double-rotating impact roller mill provided by the present invention drives the inner grinding roller to rotate can be adjusted to different centrifugal forces by adjusting the rotational speed of motor 1 24 and motor 2 25. This centrifugal force acts on the material in the grinding ring 27, which can have the effect of stress decomposition of the material particles; the design of the V-shaped (or U-shaped) outer edge wall of the grinding ring 27 and the inner grinding roller utilizes the characteristic that the linear speeds of the bottom and side surfaces of the two V-shaped (or U-shaped) outer edge wall surfaces are different when they are in rotational contact. When the material falls between the grinding ring 27 and the inner grinding roller, the material is squeezed and kneaded at the same time, thereby achieving the working purpose of grinding.

[0080] During operation, motor 2 25 and driven sprocket 1 12 drive the inner drive shaft 11, the inner supporting plate 14 and the outer supporting plate 16 to rotate in the opposite direction of the grinding ring 27. The inner supporting plate 14 and the outer supporting plate 16 drive several inner rolling rollers to rotate together. Under the action of the centrifugal force generated by the rotation, the inner rolling roller will be in close contact with and compacted with the grinding ring 27. The friction force generated in this process causes the inner rolling roller to rotate while revolving with the supporting plate.

[0081] During specific use, the material enters the grinding chamber 5 through the feed hopper 10, and the material gathers in the annular groove on the grinding ring 27. Then, the motor 1 24 drives the driven sprocket 2 23 to rotate through the chain, and the driven sprocket 2 23 rotates through the outer drive shaft 4 to drive the grinding chamber 5 to rotate. Synchronously, under the action of friction, the material in the annular groove will be dispersed on the surface of the annular groove to form a flat layer of flowing material. At the same time, the driven sprocket 1 12 is driven to rotate by the motor 2 25, and the driven sprocket 1 12 drives the inner drive shaft 11 to rotate. The rotation of the inner drive shaft 11 drives the inner supporting disk 14 and the outer supporting disk 16 to rotate. The inner supporting disk 14 and the outer supporting disk 16. When the two rotate, they drive the rotation of the first support shafts 15. The rotation of the first support shafts 15 drives the rolling roller body 19 to rotate. The rolling roller body 19 squeezes and grinds the material inside the annular groove. When the rolling roller body 19 rotates, the centrifugal force generated by its own weight and rotation causes the rolling roller body 19 to press tightly against the material layer in the annular groove, thereby dispersing, crushing and grinding the material, thereby achieving the effect of material powder production. During the grinding process, the inner drive shaft 11 synchronously drives the blades 13 to rotate. The blades 13 rotate to output airflow, and the airflow carries the material that has reached a preset fineness during the grinding process out from the gas-material mixed airflow outlet 9;

[0082] During the grinding process, the first support shaft 15 and the second support shaft 21 are respectively slidably connected in the first chute 17 and the second chute 20, so that the rolling roller body 19 has a movable and adjustable space, so that the rolling roller body 19 can move in a small range according to the hardness or stacking degree of the material during the grinding process.

[0083] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A rotary impact roller mill, characterized in that, Comprising: An inner clamping disk, with a number of first sliding grooves evenly arranged at the circular peripheral edge of the inner clamping disk; A connecting shaft, with one end connected to the inner clamping disk; An outer clamping disk, connected to the other end of the connecting shaft, and a number of second sliding grooves matching the first sliding grooves are evenly arranged at the circular peripheral edge of the outer clamping disk; An inner rolling roller, including a rolling roller body, a first support shaft connected to one side of the rolling roller body, and a second support shaft connected to the other side of the rolling roller body. The first support shaft is floatingly arranged in the first sliding groove, and the second support shaft is floatingly arranged in the second sliding groove.

2. A rotary impact roller mill according to claim 1, characterized in that, It further comprises: An inner drive shaft, with one end connected to the inner clamping disk; A first driven sprocket, with one end connected to the inner clamping disk, and the other end connected to the first driving sprocket at the output end of the second motor through a chain.

3. A rotary impact roller mill according to claim 2, characterized in that, It further comprises: Blades, arranged in the grinding chamber, installed on the side of the clamping disk, and arranged on the inner drive shaft.

4. A rotary impact roller mill according to claim 3, characterized in that, It further comprises: A grinding chamber, including a first side plate, a grinding ring connected to the first side plate, and a second side plate connected to the grinding ring. The inner clamping disk, connecting shaft, outer clamping disk, inner rolling roller and blades are arranged inside the grinding chamber. The grinding ring is an annular pressure-bearing ring with a V-shaped groove or U-shaped groove in the cross-section of its inner surface.

5. A rotary impact roller mill according to claim 2, characterized in that, It further comprises: A first bearing, sleeved outside the inner drive shaft; An outer drive shaft, sleeved outside the inner drive shaft, and arranged on the first bearing, with one end connected to the grinding chamber; A second driven sprocket, fixed outside the outer drive shaft, and connected to the second driving sprocket at the output end of the first motor through a chain.

6. A rotary impact roller mill according to claim 5, characterized in that, It further comprises: A support base, arranged on the installation base; A second bearing, sleeved outside the outer drive shaft, and arranged on the support base.

7. A rotary impact roller mill according to claim 5, characterized in that, It further comprises: A discharge rack, which is a horizontally placed frustum-shaped, and the end with a larger diameter of the discharge rack is connected to the second side plate; A feed hopper, including a feed part and a blanking part. One end of the blanking part is connected to the feed part. The blanking part is inclined. The other end of the blanking part passes through the discharge rack and extends into the grinding chamber and matches with the annular groove. A through hole matching the blanking part is opened at the center of the outer clamping disk.

8. A rotary impact roller mill according to claim 7, characterized in that, The rolling roller body is of a disk-shaped structure, and the cross-section of the outer edge of the disk-shaped structure is a V-shaped structure or a U-shaped structure, and the cross-section of the outer edge of the disk-shaped structure matches the V-shaped groove or U-shaped groove on the inner surface of the grinding ring.

9. A rotary impact roller mill according to claim 7, characterized in that, It further comprises: A seal, the end with a larger diameter of the discharge rack is movably connected to the second side plate, and the seal is arranged at the connection between the discharge rack and the second side plate; An air-solid mixed gas flow discharge port, connected to the end with a smaller diameter of the discharge rack; A support frame, connected to the air-solid mixed gas flow discharge port, and movably arranged on the installation base.

10. A rotary impact roller mill according to claim 3, characterized in that, It further comprises: A blade mounting member, including a blade mounting member body and an air inlet channel arranged on the blade mounting member body; An air flow channel, arranged inside the inner drive shaft, and communicated with the air inlet channel.

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