Hard alloy blank crushing and recycling device

Abstract

The utility model relates to the technical field of hard alloy blank recycling, in particular to a hard alloy blank crushing and recycling device. The utility model discloses a hard alloy blank crushing and recycling device which comprises a first crushing box, and a first tooth roller, a second tooth roller and a first power assembly are arranged in the first crushing box, the first tooth roller and the second tooth roller rotate oppositely, and the first power assembly is used for enabling the first tooth roller and the second tooth roller to rotate. The first tooth roller and the second tooth roller are provided with oppositely-arranged cutter tooth sets, the cutter tooth sets on the first tooth roller and the second tooth roller are arranged in an array mode in the axial direction of the tooth rollers, the cutter tooth sets on the two tooth rollers are sequentially arranged in a staggered mode, each cutter tooth set comprises at least two cutter teeth, and each cutter tooth comprises a front cutter face and a rear cutter face. And the front cutter surfaces and the rear cutter surfaces of the cutter teeth are arc-shaped. The utility model has the advantages that the structural strength of the blade can be improved, so that the hard alloy blank can be automatically crushed and recycled.

Description

TECHNICAL FIELD

[0001] The utility model relates to cemented carbide blank recycling technical field, concretely to a kind of cemented carbide blank comminution recycling device. BACKGROUND

[0002] Chinese patent application with application number 201720182806.6 discloses a milling and shearing type double-tooth roller structure for medical waste crushing equipment, which comprises two tooth rollers, the first tooth roller is composed of a first cutter shaft and a plurality of disc-shaped blades fixed on the first cutter shaft, the second tooth roller is composed of a second cutter shaft and a plurality of disc-shaped blades fixed on the second cutter shaft, the disc-shaped blades on the first cutter shaft and the disc-shaped blades on the second cutter shaft are arranged in an alternating staggered manner, each disc-shaped blade is composed of a blade body and a blade tooth, and the blade tooth is uniformly distributed in the circumferential direction, each blade tooth is composed of an intersection of a rake face and a relief face, the relief face is a curved surface formed by an Archimedes spiral, and the rake face and the relief face form a rake angle and a relief angle, respectively; a blade mounting hole composed of two symmetrical arc surfaces and two symmetrical planes is provided at the center of the blade body, and the outer contours of the two cutter shafts are consistent with the shape of the blade mounting hole.

[0003] In the above technical solution, the blade tooth composed of the rake face and the relief face is engaged with each other, so that the medical waste in the crushing chamber is crushed, but since the relief face in the above technical solution is a plane, the thickness of the blade tooth is relatively thin, and the structural strength is poor, which can easily cause the blade tooth to break when crushing some waste materials with high structural strength, such as cemented carbide blank parts, affecting the service life of the blade, and thus the device cannot be applied to the comminution and recycling of cemented carbide blank parts. When the existing scrapped cemented carbide blank is crushed and recycled, manpower is needed to initially crush the product and then pass through a ball mill, but due to the high density of the product, it is very laborious to knock, and the labor cost is high. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a cemented carbide blank comminution recycling device which can improve the structural strength of the blade to enable automatic comminution and recycling of cemented carbide blank parts.

[0005] To achieve the above-mentioned purpose, the utility model discloses a cemented carbide blank comminution recycling device, which comprises a first crushing box, a first tooth roller and a second tooth roller rotating towards each other are arranged in the first crushing box, and a first power assembly is arranged for the rotation of the first tooth roller and the second tooth roller, a blade tooth group is arranged on the first tooth roller and the second tooth roller, the blade tooth groups on the first tooth roller and the second tooth roller are arranged in an array along the axial direction of the tooth roller, and the blade tooth groups on the two tooth rollers are arranged in an alternating staggered manner, each blade tooth group comprises at least two blade teeth, the blade teeth comprise a rake face and a relief face, and the rake face and the relief face of the blade teeth are arc-shaped.

[0006] When the hard alloy blank needs to be crushed and recycled, the first power assembly rotates the first tooth roller and the second tooth roller towards each other, the first tooth roller and the second tooth roller bite and crush the waste material through the cutter teeth on the cutter tooth group, thereby completing the crushing and recycling of the hard alloy blank.

[0007] The first tooth roller and the second tooth roller rotate towards each other, the cutter teeth are arranged in an array along the axial direction of the tooth roller and are sequentially staggered, the bite between the cutter teeth is more compact, the rake face and the relief face are both designed as arc shapes, the thickness of the cutter teeth is increased, thereby significantly improving the overall structural strength of the cutter teeth, the cutter teeth can better resist stress generated by high-load work during the crushing process, the device can more effectively crush the hard alloy blank, the risk of tooth collapse of the cutter head is reduced, and the service life of the cutter blade is prolonged, and the utility model has the advantages of improving the structural strength of the cutter blade to enable the hard alloy blank to be automatically crushed and recycled.

[0008] Preferably, a flat portion is further arranged between the rake face of the cutter tooth and the relief face of the adjacent cutter tooth, and a circular arc portion for transition is arranged between the rake face of the cutter tooth and the flat portion.

[0009] The flat portion can increase the bite space of the cutter tooth group when the first tooth roller and the second tooth roller rotate towards each other while ensuring the structural strength of the cutter tooth, and facilitates the cutter tooth group to complete crushing.

[0010] Preferably, the lower side of the first crushing box further comprises a second crushing box and a third crushing box arranged in sequence in the vertical direction, the second crushing box is provided with a second crushing mechanism for crushing large blank pieces into powder and small pieces, and the third crushing box is provided with a third crushing mechanism for completely crushing the powder and small pieces of blank pieces.

[0011] The second crushing mechanism and the third crushing mechanism realize multi-stage crushing, so that the recycled hard alloy blank meets the crushing standard.

[0012] The second crushing mechanism and the third crushing mechanism can be any existing crushing mechanism that can be installed on the lower side of the first crushing box, such as a jaw crusher, a cone crusher or a hammer crusher.

[0013] Preferably, the second crushing mechanism comprises a first pressure roller and a second pressure roller rotating towards each other and a second power assembly for driving the first pressure roller and the second pressure roller to rotate, and the outer circular surface of the first pressure roller and the second pressure roller is provided with spiral grooves with the same rotation direction.

[0014] The first broken box is further crushed by the first and second compression rollers through the opposite rotating movement, so that the recycled materials are in powder or strip block shape falling from the spiral groove; wherein the second power assembly is any existing power device for driving the roller to rotate, such as a power motor.

[0015] As preferred, the spiral groove extends from one end to the other end of the first and second compression rollers and is arranged in a ring array with several groups.

[0016] By covering the spiral groove on the surface of the first and second compression rollers, the feeding rate of the recycled materials in the second broken box is improved.

[0017] As preferred, the outer cylindrical surface of the first and second compression rollers is close to each other on one side with a distance of 0.5mm, thereby controlling the size of the recycled materials discharged from the second broken box.

[0018] As preferred, the third crushing mechanism includes a tool holder rotating in the third broken box and at least two groups of blade sets symmetrically arranged in the tool holder, the blade sets are fixed between the tool holder and the tool holder, and the rotation axis of the tool holder is perpendicular to the gap direction between the first and second compression rollers.

[0019] By high-speed rotating the blade sets, the recycled materials discharged from the second broken box are impacted to completely crush the hard alloy blank.

[0020] As preferred, the blades of adjacent blade sets are staggered, thereby increasing the cutting surface of the blade sets and improving the impact efficiency of the blade sets, thereby improving the crushing efficiency of the recycled materials.

[0021] As preferred, the third broken box further has a grid at the lower side of the tool holder, one end of the grid close to the tool holder is an arc surface, the arc of the arc surface is adapted to the rotation route of the blade sets, and the mesh diameter of the grid is greater than the diameter of the blank block.

[0022] The grid can make the recycled materials stay on the cutting path of the blade sets for a short time, thereby increasing the impact times of the recycled materials and ensuring the crushing effect of the recycled materials.

[0023] The utility model can make the cutter teeth more resistant to stress generated by high load work in the crushing process, so that the device can more effectively crush the hard alloy blank, reduces the risk of cutter head broken teeth, prolongs the service life of the blade, has the advantages of improving the structural strength of the blade, so that the hard alloy blank can be automatically crushed and recycled. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the utility model.

[0025] Figure 2 It is a structure schematic view of the first tooth roller and the second tooth roller of the utility model.

[0026] Figure 3 It is a sectional structure schematic view of the second crushing box of the utility model.

[0027] Figure 4 It is a sectional structure schematic view of the third crushing box of the utility model.

[0028] Figure 5 It is a structure schematic view of the grid of the utility model.

[0029] In the drawing: 11, first crushing box; 12, first power motor; 13, first tooth roller; 14, second tooth roller; 15, cutter tooth group; 151, rake face; 152, relief face; 16, plane part; 20, second crushing box; 21, second power motor; 22, first compression roller; 23, second compression roller; 24, spiral groove; 25, third crushing box; 26, cutter holder; 27, blade group; 28, grid; 29, mesh. DETAILED DESCRIPTION

[0030] The utility model will be further described below according to the drawing and specific embodiment.

[0031] As shown in Figure 1 The embodiment discloses a cemented carbide blank crushing and recycling device, which comprises first crushing box 11, second crushing box 20 and third crushing box 25 arranged in sequence along the vertical direction, a storage barrel is arranged at the discharge port of third crushing box 25, and first power assembly is arranged in first crushing box 11. Figure 2 As shown in First power assembly is first power motor 12, first tooth roller 13 and second tooth roller 14 are arranged in first crushing box 11 and rotate towards each other, first power motor 12 is arranged for driving first tooth roller 13 and second tooth roller 14 to rotate, first tooth roller 13 and second tooth roller 14 are provided with oppositely arranged cutter tooth groups 15, cutter tooth groups 15 on first tooth roller 13 and second tooth roller 14 are arranged in an array along the axial direction of the tooth roller, and cutter tooth groups 15 on the two tooth rollers are arranged in sequence and are staggered, the number of cutter teeth of cutter tooth group 15 is three, and cutter tooth group 15 is arranged in an annular array, the cutter teeth comprise rake face 151 and relief face 152, rake face 151 and relief face 152 of the cutter teeth are both arc-shaped, a plane part 16 is further arranged between rake face 151 of the cutter teeth and relief face 152 of the adjacent cutter teeth, a circular arc part for transition is arranged between rake face 151 of the cutter teeth and plane part 16, second crushing mechanism for crushing large blank pieces into powder and small pieces is arranged in second crushing box 20, and third crushing mechanism for completely crushing the powder and small pieces of blank pieces is arranged in third crushing box 25.

[0032] As shown in Figure 3The second crushing mechanism comprises a first compression roller 22, a second compression roller 23 and a second power assembly for rotating the first compression roller 22 and the second compression roller 23, the second power assembly is a second power motor 21, the first compression roller 22 and the second compression roller 23 are provided with helical grooves 24 of the same rotation direction on the outer circumferential surfaces, the helical grooves 24 extend from one end to the other end of the first compression roller 22 and the second compression roller 23 and are arranged in a plurality of groups in a ring shape, and the outer circumferential surfaces of the first compression roller 22 and the second compression roller 23 are spaced apart by 0.3-0.5 mm on the side close to each other.

[0033] The first power motor 12 drives the first tooth roller 13 and the second tooth roller 14 to rotate in opposite directions. Figure 4 The third crushing mechanism comprises a tool holder 26 rotatingly arranged in a third crushing box 25 and at least two groups of blade sets 27 symmetrically arranged in the tool holder 26, the third crushing box 25 is provided with a third power assembly for controlling the rotation of the tool holder 26, the third power assembly is a third power motor, the blade sets 27 are fixed with the tool holder 26, the rotation axis of the tool holder 26 is perpendicular to the gap direction between the first compression roller 22 and the second compression roller 23, the blades of adjacent blade sets 27 are arranged in a staggered manner, and a mesh grid 28 is further arranged in the third crushing box 25 below the tool holder 26, one end of the mesh grid 28 close to the tool holder 26 is an arc surface, the arc surface has an arc degree matched with the rotation route of the blade sets 27, and the mesh holes 29 of the mesh grid 28 have a diameter greater than the diameter of the blank pieces.

[0034] When it is necessary to crush and recycle the cemented carbide blank, the first power motor 12 drives the first tooth roller 13 and the second tooth roller 14 to rotate in opposite directions, the first tooth roller 13 and the second tooth roller 14 drive the tooth sets 15 to rotate synchronously, the teeth on the tooth sets 15 bite and crush the blank through the rake faces 151, at this time, the crushed blank enters the second crushing box 20 under the action of gravity, the helical grooves 24 on the first compression roller 22 and the second compression roller 23 enable the blank to enter between the first compression roller 22 and the second compression roller 23, and then the blank is crushed into a powder or a strip block falling from the helical grooves 24 by the roller surfaces of the first compression roller 22 and the second compression roller 23, at this time, the blank crushed in the second stage enters the third crushing box 25 under the action of gravity, the tool holder 26 drives the blade sets 27 to rotate under the control of the third power motor, the blade sets 27 collide with the blank crushed in the second stage, so that the blank is completely crushed into a powder, the powder blank falling on the mesh grid 28 is broken again under the action of the blade sets 27 and then falls from the mesh holes 29 of the mesh grid 28, and finally is collected by the storage barrel.

Claims

1. A cemented carbide blank crushing and recycling device, comprising a first crushing box, a first tooth roller and a second tooth roller rotating towards each other are arranged in the first crushing box, a first power assembly is arranged for the rotation of the first tooth roller and the second tooth roller, a set of teeth are arranged on the first tooth roller and the second tooth roller in opposite positions, the sets of teeth on the first tooth roller and the second tooth roller are arranged in an array along the axial direction of the tooth roller, and the sets of teeth on the two tooth rollers are arranged in sequence with a staggered position, characterized in that: The tool teeth group comprises at least two tool teeth, the tool teeth comprise rake faces and flank faces, and the rake faces and the flank faces of the tool teeth are arc-shaped. ​ 2. A cemented carbide blank comminution and recycling device according to claim 1, characterized in that: A flat part is arranged between the rake face of the tool teeth and the flank face of the adjacent tool teeth, and a circular arc part for transition is arranged between the rake face of the tool teeth and the flat part.

3. A device for comminution and recycling of cemented carbide blanks according to claim 1 or 2, characterized in that: The first crushing box further comprises a second crushing box and a third crushing box arranged in sequence in the vertical direction, the second crushing box is internally provided with a second crushing mechanism for crushing large blank blocks into powder and small blocks, and the third crushing box is internally provided with a third crushing mechanism for completely crushing the powder and small blank blocks.

4. A cemented carbide blank comminution and recycling device according to claim 3, characterized in that: The second crushing mechanism comprises first and second compression rollers in opposite rotary motion and a second power assembly for rotating the first and second compression rollers, and the first and second compression rollers are externally provided with helical grooves with the same rotation direction.

5. A cemented carbide blank comminution and recycling device according to claim 4, characterized in that: The helical grooves extend from one axial end to the other end of the first and second compression rollers and are arranged in annular arrays.

6. A cemented carbide blank comminution and recycling device according to claim 4, characterized in that: The first and second compression rollers are externally provided with a gap of 0.3-0.5 mm on one side close to each other.

7. A cemented carbide blank comminution and recycling device according to claim 4, characterized in that: The third crushing mechanism comprises a tool holder rotatably arranged in the third crushing box and at least two groups of tool blades symmetrically arranged in the tool holder, the tool blades are fixed between the tool holder and the tool blades, and the rotation axis of the tool holder is perpendicular to the gap direction between the first and second compression rollers.

8. A cemented carbide blank comminution and recycling device according to claim 7, characterized in that: The tool blades of adjacent tool blade groups are arranged in staggered positions.

9. A cemented carbide blank comminution and recycling device according to claim 8, characterized in that: The third crushing box is further provided with a mesh grid on the lower side of the tool holder, one end of the mesh grid close to the tool holder is an arc face, the arc face has an arc degree matched with the rotation route of the tool blade group, and the mesh hole diameter of the mesh grid is greater than the diameter of the blank block.

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