CN112844651B

CN112844651B - Ball mill for crushing tungsten carbide blocks produced by recycling waste hard alloy

Info

Publication number: CN112844651B
Application number: CN202110023310.5A
Authority: CN
Inventors: 黄友生
Original assignee: Ganzhou Zhongxin Mining Co ltd
Current assignee: Ganzhou Zhongxin Mining Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2022-09-27
Anticipated expiration: 2041-03-15
Also published as: CN112844651A

Abstract

The invention provides a ball mill for crushing tungsten carbide blocks produced by recycling waste hard alloys, which belongs to the technical field of mining equipment and comprises a fixed support, wherein an outer wrapping barrel is rotatably connected above the fixed support, an inner barrel is rotatably connected inside the outer wrapping barrel, a speed reducer and a driving motor are fixedly connected above the fixed support from left to right on the right side of the outer wrapping barrel in sequence, and the speed reducer and the driving motor are in transmission connection through a rotating shaft. This kind of old and useless carbide is retrieved production tungsten carbide piece and is smashed and use ball mill is provided with broken arris piece, when broken arris piece is acted on by two mutual centrifugal force, two strands of centrifugal force produce a pushing action on acting on two different inclination's stress plate respectively to make centrifugal force promote the side and expand the piece and outwards expand, and the side pushes when expanding the piece and promotes the bottom and expand the piece and outwards expand, thereby makes the whole crushing operation of cutting the striking to the material after expanding of broken arris piece.

Description

Ball mill for crushing tungsten carbide blocks produced by recycling waste hard alloy

Technical Field

The invention relates to the technical field of mining equipment, in particular to a crushing ball mill.

Background

The ball mill is a key equipment for crushing materials after the materials are crushed, and the ore mill of the type is characterized in that a certain amount of steel balls are filled in a cylinder body of the ore mill to be used as grinding media, and the ore mill is widely applied to production industries of cement, silicate products, novel building materials, refractory materials, chemical fertilizers, black and non-ferrous metal ore dressing, glass ceramics and the like, and is used for dry-type or wet-type grinding of various ores and other grindable materials.

Tungsten carbide is a compound consisting of tungsten and carbon, has a molecular formula of WC and a molecular weight of 195.85, is a black hexagonal crystal, has metallic luster, has hardness similar to that of diamond, is a good conductor of electricity and heat, is insoluble in water, hydrochloric acid and sulfuric acid, is easily soluble in mixed acid of nitric acid and hydrofluoric acid, is fragile, can reduce brittleness if doped with a small amount of metals such as titanium, cobalt and the like, is used as tungsten carbide of a steel cutting tool, is usually added with titanium carbide, tantalum carbide or a mixture of the titanium carbide and the tantalum carbide to improve the anti-explosion capability, has stable chemical properties, and is applied to hard alloy production materials.

The safety ball mill for mineral crushing with the application number of CN201810557767.2 comprises a frame, a fixed cylinder and a ball grinding cylinder, wherein the cross section of the frame is U-shaped, the fixed cylinder is positioned on the inner side of the frame, and the bottom of the fixed cylinder is fixedly connected with the frame through a plurality of support rods; the device is provided with an emergency brake device, when a machine needs to be stopped emergently in an emergency, a pedal is stepped by feet, a brake card can clamp a brake disc tightly, so that huge friction resistance is generated to stop the operation of the brake disc together with a driving shaft, thereby avoiding accidents, downward strong wind is generated through the arrangement of an air blower, the material blocked in a through hole of a ball milling cylinder can be blown down, and the caking of the powder material after ball milling is avoided, thereby ensuring the normal transportation of raw materials, and the material can be extruded and crushed through the extrusion force between a conveying auger and the inner wall of the cylinder body in the transportation process through the arrangement of a feeder, thereby accelerating the efficiency of ball milling and crushing, the material is extruded and crushed through the extrusion force in the technical scheme, although the purpose of crushing efficiency can be achieved, the grinding precision effect cannot be further improved, the specification of the crushed material can only reach the set specification.

Therefore, further research needs to be carried out on the basis of the existing grinding ball mill, and a new ball mill for grinding tungsten carbide blocks produced by recycling waste hard alloys is provided.

Disclosure of Invention

The invention aims to solve the technical problems in the background art and provides a ball mill for crushing tungsten carbide blocks produced by recycling waste hard alloys.

In order to achieve the purpose, the invention provides the following technical scheme: a ball mill for crushing tungsten carbide blocks produced by recycling waste hard alloys comprises a fixed support, wherein an outer wrapping barrel is rotatably connected above the fixed support, an inner barrel is rotatably connected inside the outer wrapping barrel, a speed reducer and a driving motor are sequentially and fixedly connected above the fixed support from left to right on the right side of the outer wrapping barrel, the speed reducer and the driving motor are in transmission connection through a rotating shaft, the speed reducer is in transmission connection with the inner barrel through the rotating shaft, the speed reducer and the driving motor are simultaneously arranged on the left side of the fixed support and are in transmission connection with the outer wrapping barrel, a transmission gear is embedded into the fixed support below the outer wrapping barrel and is in transmission connection with the speed reducer, an outer rack is embedded into the outer surface of the outer wrapping barrel, the outer rack is in meshing connection with the transmission gear, and a discharging port is embedded into the middle section of the outer wrapping barrel, a feeding hollow shaft is embedded in the left side of the outer wrapping barrel, secondary crushing cavities are arranged between the inner wall of the outer wrapping barrel and the outer wall of the inner barrel at intervals, connecting steel ropes are fixedly connected to the inner wall of the outer wrapping barrel, the maximum length of each connecting steel rope is 1/2 which is the width of the secondary crushing cavity, crushing edge blocks are fixedly connected to the tail ends of the connecting steel ropes, side expanding blocks are movably embedded in the left and right sides of the bottom of each crushing edge block, bottom expanding blocks are movably embedded in the bottom of each crushing edge block, stress plates are fixedly connected to the side surfaces of the crushing edge blocks and are arranged on the outer surfaces of the side expanding blocks at the same time, spring receiving shafts are rotatably connected to the inner parts of the crushing edge blocks, traction steel ropes are wound on the outer surfaces of the spring receiving shafts, the tail ends of the traction steel ropes are respectively connected with the tops of the side expanding blocks and the bottom expanding blocks, and connecting plates are fixedly connected to the tops of the crushing edge blocks, the crushing arris block is connected with the connecting steel rope through a connecting plate, a retraction groove is formed in an opening in the bottom expansion block and is arranged in a penetrating mode with the outside, an extension rod is arranged in the retraction groove in a sliding mode, an inner lining plate is embedded in the inner barrel, an inner cavity is formed in an opening in the inner barrel, a through hole is formed in the middle opening of the inner lining plate and penetrates through the wall of the inner barrel, a containing groove is formed in the top opening in the through hole, the left end of the containing groove is connected with a limiting baffle through a spring shaft in a rotating mode, and the crushing steel balls are movably placed in the inner barrel.

Further preferred embodiments: the outer wrapping barrel and the inner barrel are driven by the driving motor to rotate reversely, so that two strands of centrifugal forces which run reversely are generated inside the secondary crushing cavity, and the rotating speed of the outer wrapping barrel is greater than that of the inner barrel.

Further preferred embodiments: the clearing hole internal diameter is supporting setting with limit baffle height, and is equipped with the arc wall that is recessed setting below the clearing hole to limit baffle is located the inside removal of arc wall.

Further preferred embodiments: broken arris piece, side expand piece and bottom and expand piece three combination back transversal pentagon setting of personally submitting, and side expand piece and bottom expand piece bottom cross section contained angle and be 35.

Further preferred embodiments: the two surfaces of the stress plate opposite to the broken edge block and the side surface expansion block are both arranged at 60-degree inclined included angles, and the stress plate is respectively arranged at the two surfaces of the broken edge block and the side surface expansion block in a reverse 60-degree inclined mode.

Further preferred embodiments: the extension rod is connected with the retraction groove through a spring, and the overlooking cross sections of the extension rod and the retraction groove are both arranged in an I shape.

Further preferred embodiments: the side surface unfolding block and the bottom unfolding block are separately unfolded from the broken edge block through a double centrifugal force generated by the reverse rotation of the outer wrapping barrel and the inner barrel.

Has the advantages that:

1. this kind of old and useless carbide is retrieved production tungsten carbide piece and is smashed and use ball mill is provided with the regrinding chamber, thereby it carries out the reverse rotation of different speeds to produce two strand of centrifugal force in opposite directions to wrap up bucket and interior bucket through two driving motor drives respectively, two strand of centrifugal force are used in broken arris piece, make broken arris piece to the further crushing of material that needs the regrinding, and smash the specification and can promote along with the promotion of driving motor rotational speed, thereby the material specification that makes the device processing come out can obtain quick adjustment change.

2. Be provided with broken arris piece, when broken arris piece was acted on by two mutual centrifugal force, two strands of centrifugal force produced a pushing action on acting on two different inclination's stress plate respectively to make centrifugal force promote the side and expand the piece and outwards divide the exhibition, and the side pushes when expanding the piece and expand the piece and outwards expand bottom expansion, thereby makes the whole crushing operation of cutting the striking to the material that expandes of broken arris piece.

3. Be provided with the clearing hole, when the material need pass the clearing hole, utilize high-quality tungsten piece material to strike limit baffle for the material strikes limit baffle and makes limit baffle retract back and supply the material to pass through in accomodating the groove, and the material is realized blockking the clearing hole again under the resilience of spring shaft through back limit baffle, and the effectual material that has prevented in the regrinding chamber gets into the inner chamber once more.

4. The extension rod is arranged, and the centrifugal force generated by high rotating speed acts on the tail end of the extension rod to generate an outward pulling traction force, so that the extension rod slides out of the retraction groove, the extension rod is further crushed after being unfolded, and the material is crushed in the secondary crushing cavity more efficiently.

Drawings

Fig. 1 is a schematic overall plan view of the present invention.

Fig. 2 is a schematic side sectional view of the outer wrapping barrel of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

Fig. 4 is an enlarged schematic view of the structure at B in fig. 3 according to the present invention.

Fig. 5 is a schematic view of the unfolded structure of the breaking rib block of the present invention.

Fig. 6 is a schematic perspective view of the crushing prism block of the present invention.

FIG. 7 is a top view of the bottom expansion block of the present invention.

In FIGS. 1-7: 1-fixing a bracket; 101-a transmission gear; 2-wrapping the barrel outside; 201-outer rack; 202-a feed opening; 203-feed hollow shaft; 204-secondary crushing cavity; 205-connecting steel ropes; 206-broken prism blocks; 2061-side expansion blocks; 2062-bottom expansion block; 2063-stress board; 2064-a spring-receiving shaft; 2065-traction steel cord; 2066-connecting plate; 2067-retraction groove; 2068-extension bar; 3, a speed reducer; 4-driving the motor; 5-inner barrel; 501-inner lining plate; 502-lumen; 503-through the hole; 5031-receiving groove; 5032-limit baffle; and 6, crushing the steel balls.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, in the embodiment of the present invention, a ball mill for pulverizing tungsten carbide blocks produced by recycling waste hard alloys includes a fixing support 1, a transmission gear 101, an outer wrapping barrel 2, an outer rack 201, a feed opening 202, a feed hollow shaft 203, a secondary pulverizing cavity 204, a connecting steel rope 205, a pulverizing prism block 206, a side expanding block 2061, a bottom expanding block 2062, a stressed plate 2063, a spring receiving shaft 2064, a traction steel rope 2065, a connecting plate 2066, a retraction groove 2067, an extension rod 2068, a speed reducer 3, a driving motor 4, an inner barrel 5, an inner lining plate 501, an inner cavity 502, a through hole 503, a receiving groove 5031, a limit baffle 5032 and a pulverizing steel ball 6, the outer wrapping barrel 2 is rotatably connected above the fixing support 1, the inner barrel 2 is rotatably connected with the inner barrel 5, the speed reducer 3 and the driving motor 4 are fixedly connected in sequence from left to right above the outer wrapping barrel 2 above the fixing support 1, the speed reducer 3 and the driving motor 4 are in transmission connection through a rotating shaft, the speed reducer 3 is in transmission connection with the inner barrel 5 through the rotating shaft, the speed reducer 3 and the driving motor 4 are simultaneously arranged on the left side of the fixed support 1 and are in transmission connection with the outer wrapping barrel 2, the transmission gear 101 is embedded in the fixed support 1 and is arranged below the outer wrapping barrel 2, the transmission gear 101 is in transmission connection with the speed reducer 3, the outer surface of the outer wrapping barrel 2 is provided with an outer rack 201 in an embedded mode, the outer rack 201 is connected with the transmission gear 101 in a meshed mode, the middle section of the outer wrapping barrel 2 is provided with a blanking port 202 in an embedded mode, the left side of the outer wrapping barrel 2 is provided with a feeding hollow shaft 203 in an embedded mode, secondary crushing cavities 204 are arranged between the inner wall of the outer wrapping barrel 2 and the outer wall of the inner barrel 5 at intervals, the inner wall of the outer wrapping barrel 2 is fixedly connected with a connecting steel rope 205, and the maximum length of the connecting steel rope is 1/2 with the width in the secondary crushing cavity 204, the broken edge block 206 is fixedly connected to the tail end of the connecting steel rope 205, the side expanding blocks 2061 are movably embedded in the left side and the right side of the bottom of the broken edge block 206, the bottom expanding block 2062 is movably embedded in the bottom of the broken edge block 206, the stress plate 2063 is fixedly connected to the side of the broken edge block 206 and is arranged on the outer surface of the side expanding block 2061, the spring receiving shaft 2064 is rotatably connected to the inside of the broken edge block 206, the traction steel rope 2065 is wound on the outer surface of the spring receiving shaft 2064, the tail end of the traction steel rope 2065 is respectively connected with the tops of the side expanding block 2061 and the bottom expanding block 2062, the connecting plate 2066 is fixedly connected to the top of the broken edge block 206, the broken edge block 206 is connected with the connecting steel rope 205 through the connecting plate 2066, the retraction groove 2067 is arranged in the opening in the bottom expanding block 2062 and is arranged in a penetrating manner with the outside, the retraction groove 2068 is slidably arranged in the retraction groove 2067, an inner lining plate 501 is embedded in the inner barrel 5, an inner cavity 502 is arranged at an opening in the inner barrel 5, a through hole 503 is arranged at an opening in the inner lining plate 501, the through hole 503 penetrates through the barrel wall of the inner barrel 5, a storage groove 5031 is arranged at an opening at the top in the through hole 503, a limit baffle 5032 is rotatably connected at the left end of the storage groove 5031 through a spring shaft, and a crushed steel ball 6 is movably placed in the inner barrel 5.

In the embodiment of the invention, the outer wrapping barrel 2 and the inner barrel 5 are driven by the driving motor 4 to rotate in the reverse direction, so that two strands of centrifugal forces which run in the reverse direction are generated in the secondary crushing cavity 204, and the rotating speed of the outer wrapping barrel 2 is greater than that of the inner barrel 5, so that the two strands of centrifugal forces generate a speed superposition effect after meeting, and the material has a better crushing effect.

In the embodiment of the invention, the inner diameter of the through hole 503 is matched with the height of the limiting baffle 5032, a concave arc-shaped groove is arranged below the through hole 503, the arc-shaped groove effectively enables materials to enter the through hole 503 and then fall into the arc-shaped groove to prevent the materials from falling back into the inner cavity 502, the limiting baffle 5032 is located in the arc-shaped groove to move, when the materials need to pass through the through hole 503, the high-quality tungsten block materials are used for impacting the limiting baffle 5032, so that the materials impact the limiting baffle 5032 to enable the limiting baffle 5032 to retract into the accommodating groove 5031 for the materials to pass through, the materials pass through the back limiting baffle 5032 under the rebound of the spring shaft to block the through hole 503, and the materials in the secondary crushing cavity 204 are effectively prevented from entering the inner cavity 502 again.

In the embodiment of the invention, the cross section of the broken prism block 206, the cross section of the side expansion block 2061 and the cross section of the bottom expansion block 2062 are pentagonal, the space utilization rate can be effectively improved by the pentagonal cross section formed by the combination of the broken prism block 206, the side expansion block 2061 and the bottom expansion block 2062, the stability is improved by the mutual engagement of the combined side expansion block 2061 and the bottom expansion block 2062, and the included angles of the cross sections of the bottoms of the side expansion block 2061 and the bottom expansion block 2062 are 35 degrees, so that the materials can be better crushed by the lower bottom edges with the included angles of 35 degrees.

In the embodiment of the invention, the stress plate 2063 is arranged at an inclined included angle of 60 degrees relative to the surfaces of the crushing edge block 206 and the side surface expanding block 2061, and the stress plate 2063 is respectively arranged at the surfaces of the crushing edge block 206 and the side surface expanding block 2061 in an opposite inclined angle of 60 degrees, when the crushing edge block 206 is acted by two opposite centrifugal forces, the two centrifugal forces respectively act on the stress plates 2063 with two different inclined angles to generate a pushing action, so that the centrifugal forces push the side surface expanding block 2061 to be expanded outwards, and the bottom expanding block 2062 is pushed to be expanded outwards when the side surface expanding block 2061 is expanded, so that the crushing operation of cutting and impacting on the material is carried out after the whole crushing edge block 206 is expanded.

In the embodiment of the invention, a spring is arranged between the extension rod 2068 and the retraction groove 2067 for connection, the extension rod 2068 and the retraction groove 2067 are arranged in an I-shaped cross section when viewed from above, the centrifugal force generated by high rotating speed is utilized to act on the tail end of the extension rod 2068 for generating a traction force which is pulled outwards, so that the extension rod 2068 slides out of the retraction groove 2067, and the extension rod 2068 is further crushed after being unfolded, thereby realizing more efficient crushing effect of the material in the secondary crushing cavity 204.

In the embodiment of the present invention, the side spreading blocks 2061 and the bottom spreading blocks 2062 are separately spread from the crushing rib blocks 206 by the double centrifugal force generated by the reverse rotation of the outer wrapping barrel 2 and the inner barrel 5, so that the side spreading blocks 2061 and the bottom spreading blocks 2062 which lose the centrifugal force can be rapidly retracted under the action of the spring receiving shaft 2064 to be combined with the crushing rib blocks 206 into a prism shape for receiving.

Wherein, the opposite direction and the reverse direction stated in the technical scheme all refer to the rotation that the outer wrapping barrel 2 and the inner barrel 5 are in different directions, and no matter in the process of rotating the cylindrical object, the opposite direction or the reverse direction, as long as the outer wrapping barrel 2 and the inner barrel 5 rotate in different directions, and finally, the intersection can be generated, so the opposite direction and the reverse direction belong to the same kind of pronouncing words in the technical scheme.

The working principle is as follows: when the ball mill for crushing tungsten carbide blocks produced by recycling waste hard alloy is used, the device is firstly installed at a required working position, and after the assembly is finished, the assembled device can be put into the tungsten block materials for crushing, when the ball mill is used, the crushed materials enter the inner cavity 502 from the feeding hollow shaft 203, then the driving motor 4 is started, the driving motor 4 drives the outer wrapping barrel 2 and the inner barrel 5 to rotate in different directions through the speed reducer 3 respectively, so that the crushed steel balls 6 crush the material blocks primarily, then the crushed materials pass through the through holes 503 to enter the secondary crushing cavity 204, when the crushed materials enter, the high-quality tungsten block materials impact the limit baffle 5032, the limit baffle 5032 is retracted into the receiving groove 5031 to allow the materials to pass through, the materials pass through the back limit baffle 5032 and block the through holes 503 under the resilience of the spring shaft, effectively preventing the material in the secondary crushing cavity 204 from entering the inner cavity 502 again, then utilizing the outer wrapping barrel 2 and the inner barrel 5 to reversely rotate at different speeds so as to generate two opposite centrifugal forces, wherein the two centrifugal forces act on the crushing ridge block 206, so that the crushing ridge block 206 further crushes the material to be secondarily crushed, the crushing specification can be lifted along with the lifting of the rotating speed of the driving motor 4, and when the crushing ridge block 206 is acted by the two opposite centrifugal forces, the two centrifugal forces respectively act on the stress plates 2063 at two different inclination angles to generate a pushing action, so that the centrifugal force pushes the side expanding blocks 2061 to be outwards expanded, and the side expanding blocks 2061 are simultaneously extruded to push the bottom expanding block 2062 to be outwards expanded, thereby the crushing operation of cutting impact is carried out on the material after the crushing ridge block 206 is integrally expanded, and the centrifugal force generated by high rotating speed is synchronously applied to the tail end of the extension rod 2068 to generate an outwards pulling traction force, thereby causing the extension rod 2068 to slide out of the retraction slot 2067 and causing the extension rod 2068 to expand and further crush the material, resulting in a more efficient crushing of the material in the secondary crushing chamber 204.

The above are only preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, it can make several changes and modifications without departing from the concept of the present invention, and these should also be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a waste and old carbide retrieves production tungsten carbide piece and smashes and uses ball mill, includes fixed bolster (1), its characterized in that: an outer wrapping barrel (2) is rotatably connected above the fixed support (1), an inner barrel (5) is rotatably connected inside the outer wrapping barrel (2), the right side of the outer wrapping barrel (2) above the fixed support (1) is sequentially and fixedly connected with a speed reducer (3) and a driving motor (4) from left to right, the speed reducer (3) and the driving motor (4) are in transmission connection through a rotating shaft, the speed reducer (3) is in transmission connection with the inner barrel (5) through the rotating shaft, the speed reducer (3) and the driving motor (4) are simultaneously arranged on the left side of the fixed support (1) and are in transmission connection with the outer wrapping barrel (2), a transmission gear (101) is embedded below the outer wrapping barrel (2) in the fixed support (1) and is in transmission connection with the speed reducer (3), an outer rack (201) is nested on the outer surface of the outer wrapping barrel (2), the outer gear rack (201) is meshed with the transmission gear (101), a feed opening (202) is embedded in the middle section of the outer wrapping barrel (2), a feeding hollow shaft (203) is embedded in the left side of the outer wrapping barrel (2), secondary crushing cavities (204) are arranged between the inner wall of the outer wrapping barrel (2) and the outer wall of the inner barrel (5) at intervals, a connecting steel rope (205) is fixedly connected to the inner wall of the outer wrapping barrel (2), the maximum length of the connecting steel rope (205) is 1/2 of the inner width of the secondary crushing cavity (204), a crushing edge block (206) is fixedly connected to the tail end of the connecting steel rope (205), side expanding blocks (2061) are movably embedded in the left side and the right side of the bottom of the crushing edge block (206), a bottom expanding block (2062) is movably embedded in the bottom of the crushing edge block (206), and a stressed plate (2063) is fixedly connected to the side of the crushing edge block (206), the stress plate (2063) is arranged on the outer surface of the side unfolding block (2061) at the same time, the inside of the crushing prism block (206) is rotatably connected with a spring receiving shaft (2064), the outer surface of the spring receiving shaft (2064) is wound with a traction steel rope (2065), the tail end of the traction steel rope (2065) is respectively connected with the tops of the side unfolding block (2061) and the bottom unfolding block (2062), the top of the crushing prism block (206) is fixedly connected with a connecting plate (2066), the crushing prism block (206) is connected with the connecting steel rope (205) through the connecting plate (2066), the inner opening of the bottom unfolding block (2062) is provided with a retraction groove (2067), the retraction groove (2067) is arranged in a penetrating-type opening with the outside, an extension rod (2068) is arranged in the retraction groove (2067) in a sliding manner, an inner lining plate (501) is embedded in the inner barrel (5), and the inner opening of the inner barrel (5) is provided with an inner cavity (502), a through hole (503) is formed in an opening of the inner lining plate (501), the through hole (503) penetrates through the wall of the inner barrel (5), a storage groove (5031) is formed in the top opening of the inside of the through hole (503), the left end of the storage groove (5031) is rotatably connected with a limiting baffle (5032) through a spring shaft, and a crushing steel ball (6) is movably placed in the inner barrel (5);

the outer wrapping barrel (2) and the inner barrel (5) are driven by the driving motor (4) to rotate in reverse directions, so that two centrifugal forces which run in reverse directions are generated inside the secondary crushing cavity (204), and the rotating speed of the outer wrapping barrel (2) is greater than that of the inner barrel (5);

the stress plate (2063) is arranged at an inclined included angle of 60 degrees relative to the surfaces of the broken edge block (206) and the side surface expansion block (2061), and the stress plate (2063) is respectively arranged on the surfaces of the broken edge block (206) and the side surface expansion block (2061) in a reverse 60-degree inclined mode.

2. The ball mill for crushing the tungsten carbide blocks recovered and produced from the waste hard alloy according to claim 1, which is characterized in that: the inner diameter of the through hole (503) is matched with the height of the limiting baffle (5032), a downward-concave arc-shaped groove is arranged below the through hole (503), and the limiting baffle (5032) is located in the arc-shaped groove to move.

3. The ball mill for crushing the tungsten carbide blocks recovered and produced from the waste hard alloy according to claim 1, which is characterized in that: the cross section of the combined broken prism block (206), the side expansion block (2061) and the bottom expansion block (2062) is pentagonal, and the included angles of the cross sections of the bottoms of the side expansion block (2061) and the bottom expansion block (2062) are 35 degrees.

4. The ball mill for crushing the tungsten carbide blocks recovered and produced from the waste hard alloy according to claim 1, which is characterized in that: the extension rod (2068) is connected with the retraction groove (2067) through a spring, and the extension rod (2068) and the retraction groove (2067) are arranged in an I-shaped cross section in a top view.

5. The ball mill for crushing the tungsten carbide blocks recovered and produced from the waste hard alloys according to any one of claims 1 or 3, characterized in that: the side unfolding blocks (2061) and the bottom unfolding blocks (2062) are separately unfolded from the broken edge blocks (206) through double centrifugal force generated by reverse rotation of the outer wrapping barrel (2) and the inner barrel (5).