Device and method for converting waste rocks into abrasives after abrasive water jet rock breaking

Abstract

The invention provides a device for converting waste rocks into abrasives after water jet rock breaking of the abrasives, which comprises a waste rock crusher, a disintegrating slag conveyor, a disintegrating slag crusher and a spiral crusher, and the waste rock crusher is used for primarily crushing high-hardness waste rocks after jet rock breaking; the disintegrating slag conveyor is used for conveying disintegrating slag obtained after preliminary crushing of the waste rock crusher to the disintegrating slag crusher, and the disintegrating slag crusher is used for conducting secondary crushing on waste rock disintegrating slag obtained after preliminary crushing of the waste rock crusher. And the spiral crusher is used for finally crushing the slag subjected to secondary crushing through the gradual shearing and extruding action of opposite rotating directions of spiral blades on the double-spiral shaft, and the crushed mixed grinding material is screened to output grinding material particles with the required particle size. The invention further provides a method for converting waste rocks into abrasives after abrasive water jet rock breaking. The waste rock material generated after abrasive water jet rock breaking can be recycled to serve as an abrasive source, waste rock utilization is achieved, and the resource utilization rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of water jet rock breaking, and particularly relates to a device and method for converting waste rock into abrasive after abrasive water jet rock breaking. Background Art

[0002] The abrasive water jet utilizes the high-speed water jet to carry abrasive particles and realizes effective rock breaking through the huge impact kinetic energy carried by the abrasive. Although the abrasive water jet technology is an effective rock breaking means, it has not been widely applied in actual rock breaking projects, and the continuous supply of abrasive is an urgent problem to be solved. On the one hand, due to the contradiction between the high cost of the abrasive and the continuous demand for the abrasive in the rock breaking operation, it is difficult to meet the rock breaking work requirements. On the other hand, affected by conditions such as the complex terrain and slope of the mine, the transportation of the abrasive has potential safety hazards. However, after the abrasive jet breaks the rock, there will be a large amount of waste rock, and the waste rock is expected to become a source of available abrasive, realizing local material utilization.

[0003] The invention patent application with publication number CN110370172A discloses an abrasive recycling and circulating system for a pre-mixed abrasive water jet and its usage method, including a water tank, an overflow device, a vibrating screen, a slurry pump, and a water tank; the top of the water tank has a first sand adding port, the inside has a stirring device, and the bottom is sequentially connected to a high-pressure abrasive storage tank through a compressed feeding system and a high-pressure one-way valve; the top of the abrasive storage tank is provided with a second sand adding port, and the bottom of the abrasive storage tank is respectively connected to a high-pressure water pump and a nozzle through a high-pressure water pipe. However, the abrasive is broken during the recycling process due to high-speed impact, resulting in the particle size not meeting the requirements, which will affect the actual use effect. At the same time, if the recycling cost is close to or exceeds the price of purchasing new abrasive, it will lose its economic value.

[0004] The invention patent application with publication number CN118288205A discloses an abrasive air jet grooving device with abrasive recycling and dust removal function and an abrasive recycling and dust removal method, including a jet grooving assembly and an abrasive recycling assembly. The abrasive recycling assembly sends the recycled material to an ultrasonic vibrating screen for screening and recycling through a conveyor belt and a screw feeding assembly; the jet grooving assembly includes an air compressor, the outlet of the air compressor is connected to a high-pressure gas storage cylinder, the high-pressure gas storage cylinder is connected to an abrasive tank, the abrasive tank is connected to an abrasive ejection pipeline through an outlet pipeline, and the end of the abrasive ejection pipeline is provided with a jet nozzle, and the jet nozzle is supported by a movable telescopic arm and fixed on a propulsion beam; it also includes a controller, and the controller is electrically connected to the jet grooving assembly, the abrasive recycling assembly, and the ultrasonic vibrating screen respectively. However, the essence of this invention is still to recycle the original abrasive, and it cannot guarantee the effect of the recycled abrasive.

[0005] Currently, when rocks are broken by abrasive water jets, a large amount of waste rock is generated. If these waste rocks undergo specific crushing treatment, they are expected to be made into abrasives. The abrasives converted from waste rocks can be applied in water jet systems and are expected to replace traditional abrasives (such as garnet and quartz sand), which can not only effectively reduce costs, but also convert solid waste into utilizable resources, thus achieving the goal of solid waste resource utilization. Summary of the Invention

[0006] Aiming at the technical problem that the prior art recycles raw abrasives but cannot guarantee the effect of the recycled abrasives, the present invention provides a device for converting waste rock into abrasives after abrasive water jet rock breaking. This device can crush and screen the waste rock materials generated after abrasive water jet rock breaking and recycle them as the source of abrasives, thus realizing the utilization of waste rock and improving the resource utilization rate and operation efficiency.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A device for converting waste rock into abrasives after abrasive water jet rock breaking, including a waste rock crusher, a slag conveyor, a slag crusher and a screw crusher. The waste rock crusher is used for initially crushing the high-hardness waste rock after jet rock breaking. The slag conveyor is used for conveying the slag initially crushed by the waste rock crusher to the slag crusher. The slag crusher is used for secondary crushing of the waste rock slag initially crushed by the waste rock crusher. The screw crusher is used for finally crushing the slag after secondary crushing through the progressive shearing and extrusion action with the opposite rotation directions of the spiral blades on the double spiral shafts. The crushed mixed abrasives are screened to output abrasive particles of the required particle size.

[0009] Further, the waste rock crusher includes a crushing body. A driving motor is installed on the outer wall of the crushing cavity of the crushing body. A transmission shaft is rotatably connected to the inner wall of the crushing cavity of the crushing body. A pulley is connected to the motor shaft of the driving motor. The pulley is sleeved and matched with one end of the transmission shaft extending out of the crushing cavity wall through a V-belt. A multi-pole mechanical gear is fixedly connected to the transmission shaft located in the crushing cavity.

[0010] Further, a heating system is arranged on the crushing cavity wall of the crushing body.

[0011] Further, the slag conveyor includes a variable frequency speed regulating motor, a main driving roller and a driven driving roller. The motor shaft of the variable frequency speed regulating motor is sleeved and matched with the main driving roller through a belt. A steel wire core conveyor belt is sleeved on the main driving roller and the driven driving roller. The feeding port and the discharging port of the steel wire core conveyor belt are both connected with conveying pipelines.

[0012] Further, the slag crusher includes a crusher housing, inside which a blade crusher is provided. The blade crusher includes moving blades and fixed blades arranged symmetrically in multiple stages. Each stage of moving blades and fixed blades includes two blades, which are fixedly connected by a support shaft. Two support shafts are fixedly provided on the inner wall of the crusher housing. The middle part of the support shaft of the moving blades arranged symmetrically in multiple stages is rotatably connected to one support shaft, and the middle part of the support shaft of the fixed blades arranged symmetrically in multiple stages is fixedly connected to the other support shaft. An impact speed-regulating motor is installed on the outer wall of the crusher housing. The motor shaft of the impact speed-regulating motor is sleeved on one end of a support shaft extending out of the crusher housing through a transmission belt and the support shaft of the moving blades in multiple stages. The adjacent two support shafts extending out of the crusher housing at one end of the moving blades in multiple stages are drivingly connected.

[0013] Further, a material cylinder is provided on the inner wall of the body of the spiral crusher. Two rotating shafts are rotatably connected inside the material cylinder. A spiral blade is fixedly connected to each rotating shaft. Two crushing motors are installed on the top of the body of the spiral crusher. The motor shaft of each crushing motor is fixedly connected to a rotating shaft. A discharge port is provided through the bottom of the body of the spiral crusher and the bottom of the material cylinder. A gripper is fixedly provided radially at the discharge port. Multiple layers of filter screens are clamped on the gripper. A discharge pipeline is also connected to the discharge port. A recovery pipeline is connected to the side wall of the material cylinder on the feed side of the filter screen, and the recovery pipeline is communicated with the feed port of the material cylinder.

[0014] Further, the device further includes an abrasive storage for storing abrasive particles and connected to the outlet of the discharge pipeline of the spiral crusher.

[0015] The present invention also provides a method for converting waste rock after abrasive water jet rock breaking into abrasive. In this method, the device for converting waste rock after abrasive water jet rock breaking into abrasive described above is adopted. The method includes the following steps:

[0016] S1. Collect the waste rock after abrasive water jet rock breaking;

[0017] S2. Screen the waste rock raw materials with high hardness;

[0018] S3. The waste rock crusher preliminarily crushes the high-hardness waste rock after jet rock breaking, and the slag conveyor conveys the slag after preliminary crushing by the waste rock crusher to the slag crusher;

[0019] S4. The slag crusher performs secondary crushing on the waste rock slag after preliminary crushing by the waste rock crusher;

[0020] S5. The spiral crusher performs final crushing on the slag after secondary crushing, and screens and selects abrasive particles with the required particle size;

[0021] S6. Heat-treat and impurity-treat the abrasive particles to improve the quality of the sieved abrasives.

[0022] Further, the step S1 of collecting the waste rocks after abrasive water jet rock breaking specifically is: using a robotic arm to collect the waste rock mixture after abrasive water jet rock breaking, and performing vibrating screening treatment on the waste rock mixture to separate the waste rocks from other impurities.

[0023] Further, the step S6 of heat-treating and impurity-treating the abrasive particles to improve the quality of the sieved abrasives specifically is: performing high-temperature calcination on the abrasive particles that meet the particle size requirements after multiple breakings to eliminate the moisture carried by the abrasives to achieve drying and reduce the temperature of the abrasives.

[0024] Compared with the prior art, the device and method for converting waste rocks after abrasive water jet rock breaking into abrasives provided by the present invention have the following advantages:

[0025] 1. In the present invention, the high-hardness waste rocks after jet rock breaking are preliminarily broken by a waste rock crusher, the crushed slag conveyor transports the preliminarily broken crushed slag to a crushed slag crusher for secondary breaking, and the spiral crusher performs final breaking on the crushed slag after secondary breaking. The abrasives with the required particle size are selected by screening. Thus, the rock-breaking waste rocks that were originally regarded as waste are reprocessed into reusable abrasives, that is, through processes such as breaking and screening, the waste rocks are converted into abrasive particles that meet the particle size requirements, realizing the closed-loop utilization of on-site waste rock resources, becoming a source of available abrasives, and achieving local material utilization.

[0026] 2. In the actual operation process, the traditional abrasive feeding method is to purchase abrasives and transport them to the operation site for feeding. This process often incurs many costs, such as purchase costs, labor costs, and various expenses during transportation, etc. However, the present invention adopts the method of locally converting waste rocks into abrasives, without the need for large-scale purchase and long-distance transportation of abrasives, thereby effectively reducing the rock-breaking cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the device for converting waste rocks after abrasive water jet rock breaking into abrasives provided by the present invention.

[0028] Figure 2 is a schematic connection structure diagram of the gripper and the filter screen in the present invention.

[0029] In the figure, 1 is the waste stone crusher; 11 is the mechanical gear; 2 is the slag conveyor; 21 is the main driving roller; 22 is the driven driving roller; 23 is the steel wire rope core conveyor belt; 24 is the conveying pipeline; 3 is the slag crusher; 31 is the crusher housing; 32 is the moving blade; 33 is the fixed blade; 34 is the support shaft; 35 is the supporting shaft; 4 is the spiral crusher; 41 is the barrel; 42 is the rotating shaft; 43 is the spiral blade; 44 is the crushing motor; 45 is the gripper; 46 is the filter screen; 47 is the discharge pipeline; 48 is the recovery pipeline; 5 is the abrasive storage; 51 is the discharge port. Detailed implementation mode

[0030] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below with reference to specific illustrations.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figure 1As shown in the figure, the present invention provides a device for converting waste rock after abrasive water jet rock breaking into abrasives, including a waste rock crusher 1, a slag conveyor 2, a slag crusher 3 and a spiral crusher 4. The waste rock crusher 1 is used for initially crushing high-hardness waste rock (such as the rock solidity coefficient f value > 10) after jet rock breaking. The slag conveyor 2 is used to convey the slag initially crushed by the waste rock crusher 1 to the slag crusher 3. The slag crusher 3 is used for secondary crushing of the waste rock slag initially crushed by the waste rock crusher 1. The spiral crusher 4 is used for finally crushing the slag after secondary crushing through the progressive shearing and extrusion action of the spiral blades on the double spiral shafts in opposite rotation directions. The crushed mixed abrasives are screened to output abrasive particles of the required particle size.

[0034] As a specific embodiment, please refer to Figure 1 As shown in the figure, the waste rock crusher 1 includes a crushing body. A driving motor is installed on the outer wall of the crushing cavity of the crushing body. A transmission shaft is rotatably connected to the inner wall of the crushing cavity of the crushing body. A pulley is connected to the motor shaft of the driving motor. The pulley is sleeved and matched with one end of the transmission shaft extending out of the crushing cavity wall through a V-belt. A multi-pole mechanical gear 11 is fixedly connected to the transmission shaft located in the crushing cavity. During specific operation, the waste rock enters the crushing cavity of the crushing body through the feed inlet. The driving motor drives the transmission shaft to rotate through the pulley and the V-belt, and the transmission shaft drives the multi-pole mechanical gear 11 to rotate, so that the waste rock is continuously squeezed and impacted in the crushing cavity of the crushing body and broken, completing the initial crushing of larger-sized rocks. The rock crushing size can be controlled within 20 - 40 mm, avoiding the influence of over-large waste rock size on subsequent slag and screening.

[0035] As a preferred embodiment, a heating system is provided on the crushing cavity wall of the crushing body 1. The heating system can be specifically realized by using an existing electric heater. The heating system can maintain the temperature in the crushing cavity at 25 - 100 °C, thereby heating the waste rock raw material to prevent the crushed waste rock from having too high humidity and carrying too much moisture, resulting in blockage of the subsequent conveying pipeline.

[0036] As a specific embodiment, please refer to Figure 1As shown, the slag conveyor 2 includes a variable frequency speed regulating motor, a main drive drum 21 and a slave drive drum 22. The motor shaft of the variable frequency speed regulating motor is sleeved with the main drive drum through a belt. The main drive drum 21 and the slave drive drum 22 are sleeved with a steel wire core transmission belt 23. The feed port and the discharge port of the steel wire core transmission belt 23 are connected with a conveying pipeline 24, which ensures that the import and export can accurately drop the material. During specific operation, the variable frequency speed regulating motor drives the main drive drum 21 to rotate through the belt, and the main drive drum 21 drives the slave drive drum 22 to rotate through the steel wire core transmission belt 23. The steel wire core transmission belt 23 carries the slag after the initial crushing, and realizes the conveying under the drive of the variable frequency speed regulating motor through friction. At the same time, changing the frequency of the variable frequency speed regulating motor can adjust the belt speed, and then control the transportation rate of the steel wire core transmission belt to control the slag transportation volume, so as to adapt to the transportation needs under different crushing amounts and prevent blockage.

[0037] As a specific example, please refer to Figure 1 As shown, the slag crusher 3 includes a crushing shell 31, and a blade crusher is arranged inside the crushing shell 31. The blade crusher includes multiple stages of symmetrically arranged moving blades 32 and fixed blades 33. Each stage of the moving blades 32 and the fixed blades 33 includes two blades, that is, each stage of the moving blades 32 includes two moving blades, and each stage of the fixed blades 33 includes two fixed blades. The two blades are connected and fixed by a support shaft 34. Two support shafts 35 are fixedly arranged on the inner wall of the crushing shell 31. The multiple stages of symmetrically arranged moving blades 32 The middle part of the support shaft 34 is rotatably connected to a support shaft 35, the middle part of the support shaft 34 of the multi-stage symmetrically arranged fixed blades 33 is fixedly connected to another support shaft 35, and an impact speed regulating motor is installed on the outer wall of the crusher shell 31. The motor shaft of the impact speed regulating motor is extended to one end of a support shaft 34 outside the crusher shell 31 through a transmission belt and multi-stage moving blades 32, and the multi-stage moving blades 32 extend to one end of two adjacent support shafts 34 outside the crusher shell 31 for transmission connection, such as through conventional belts or gears. During specific operation, the impact speed regulating motor drives a supporting shaft 34 to rotate through a transmission belt, and one supporting shaft 34 drives other supporting shafts 34 to rotate through transmission, and each supporting shaft 34 drives the corresponding moving blades 32 to rotate, so that in the crushing chamber inside the crusher shell 31, the fixed blades 33 and the high-speed rotating moving blades 32 form a composite crushing area, allowing the waste rock to be affected by the multi-stage symmetrically arranged blades: first, the first-stage blades perform preliminary impact and shearing on the waste rock to crush it; then, the crushed waste rock enters the next-stage blades, is subjected to stronger impact and shearing, and is further crushed; after multi-stage crushing, the waste rock is crushed into a certain particle size, and the particles are further refined.

[0038] As a specific example, please refer to Figure 1 andFigure 2 As shown, a material cylinder 41 is provided on the inner wall of the body of the spiral crusher 4. Two rotating shafts 42 are rotatably connected inside the material cylinder 41. A spiral blade 43 is fixedly connected to each rotating shaft 42. Two crushing motors 44 are installed on the top of the body of the spiral crusher 4. The motor shaft of each crushing motor 44 is fixedly connected to a rotating shaft 42. An outlet is provided through the bottom of the body of the spiral crusher 4 and the bottom of the material cylinder 41. A gripper 45 is radially fixed at the outlet. A multi-layer filter screen 46 is clamped on the gripper 45. An outlet pipe 47 is also connected to the outlet. A recovery pipe 48 is connected to the side wall of the material cylinder 41 on the feed side of the filter screen 46. The recovery pipe 48 is communicated with the feed inlet of the material cylinder 41. During specific operation, each crushing motor 44 drives a rotating shaft 42 to rotate, and a rotating shaft 42 drives the corresponding spiral blade 43 to rotate. At the same time, the motor shafts of the two crushing motors 44 rotate in opposite directions. Thus, the waste stone material entering the inside of the material cylinder 41 will be strongly stirred and extruded by the double spiral blades 43 rotating in opposite directions, so that the material is crushed and refined. The particle size of the waste residue particles is broken to less than 1 mm. The crushed mixed abrasive is screened by the multi-layer filter screen 46 to output abrasive particles of the required particle size. By horizontally or longitudinally moving the multi-layer filter screen 46 on the gripper 45 in a coordinated manner, the screen hole size can be dynamically adjusted to be between 0.1 and 1 mm, so that it can output abrasive particles meeting the requirements of the working scenario, ensuring that the qualified rate of the abrasive particle size is ≥80%. Then, the qualified abrasive is output from the outlet pipe 47, and the abrasive particles not meeting the particle size requirements are transported back into the material cylinder 41 through the recovery pipe 48 for re-crushing treatment.

[0039] As a specific embodiment, please refer to Figure 1 As shown, the device further includes an abrasive storage 5 connected to the outlet of the outlet pipe 47 of the spiral crusher 4 for storing abrasive particles. That is, the abrasive storage 5 is used to store the abrasive particles crushed by the spiral crusher 4. After the abrasive is discharged through the discharge port 51 at the bottom of the abrasive storage 5, it is transported to the abrasive water jet rock breaking system for abrasive feeding.

[0040] The present invention also provides a method for converting waste stone after abrasive water jet rock breaking into abrasive. In this method, the device for converting waste stone after abrasive water jet rock breaking into abrasive described above is adopted. The method includes the following steps:

[0041] S1. Collect the waste stone after abrasive water jet rock breaking;

[0042] S2. Screen the high-hardness waste stone raw materials;

[0043] S3. The waste stone crusher preliminarily crushes the high-hardness waste stone after jet rock breaking, and the slag conveyor transports the slag preliminarily crushed by the waste stone crusher to the slag crusher;

[0044] S4. The slag crusher performs secondary crushing on the waste rock slag after preliminary crushing by the waste rock crusher.

[0045] S5. The spiral crusher performs final crushing on the slag after secondary crushing, and screens and selects abrasive particles of the required particle size.

[0046] S6. Heat treatment and impurity treatment are performed on the abrasive particles to improve the quality of the sieved abrasives.

[0047] As a specific embodiment, the step S1 of collecting the waste rock after abrasive water jet rock breaking is specifically as follows: The waste rock mixture after abrasive water jet rock breaking is collected by a robotic arm, and the waste rock mixture is subjected to vibrating screening treatment to separate the waste rock from other impurities, thereby realizing the collection of the waste rock after abrasive water jet rock breaking.

[0048] As a specific embodiment, the step S2 of screening high-hardness waste rock raw materials is specifically as follows: The ore is photographed by an industrial camera to obtain the type of the ore, preliminarily evaluate the hardness of the ore, and screen the hard ore.

[0049] As a specific embodiment, the step S6 of performing heat treatment and impurity treatment on the abrasive particles to improve the quality of the sieved abrasives is specifically as follows: The abrasive particles meeting the particle size requirements after multiple crushing are dried by high-temperature calcination to eliminate the moisture carried by the abrasives, and the temperature of the abrasives is reduced.

[0050] As a specific embodiment, the specific operation details in the steps S3 to S5 are the same as the corresponding parts in the foregoing device, and thus will not be described herein again.

[0051] Compared with the prior art, the device and method for converting waste rock after abrasive water jet rock breaking into abrasives provided by the present invention have the following advantages:

[0052] 1. In the present invention, the high-hardness waste rock after jet rock breaking is preliminarily crushed by a waste rock crusher, the slag conveyor conveys the slag after preliminary crushing to the slag crusher for secondary crushing, the spiral crusher performs final crushing on the slag after secondary crushing, and screens and selects abrasive particles of the required particle size. Thus, the rock-breaking waste rock originally used as waste is reprocessed into reusable abrasives, that is, through processes such as crushing and screening, the waste rock is converted into abrasive particles meeting the particle size requirements, realizing the closed-loop utilization of on-site waste rock resources, becoming a source of available abrasives, and achieving local material utilization.

[0053] 2. In the actual operation process, the traditional abrasive feeding method is to purchase abrasives and transport them to the operation site for feeding. This process is often accompanied by the generation of many costs, such as purchase costs, labor costs, and various expenses during transportation, etc. However, the present invention adopts the method of locally converting waste rock into abrasives, without the need for large-scale purchase and long-distance transportation of abrasives, thereby effectively reducing the rock-breaking cost.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An apparatus for converting waste rock after abrasive water jet rock breaking into abrasives, characterized in that, It includes a waste rock crusher, a slag conveyor, a slag crusher and a spiral pulverizer. The waste rock crusher is used for performing preliminary crushing of high-hardness waste rock after jet rock breaking. The slag conveyor is used for conveying the slag after preliminary crushing by the waste rock crusher to the slag crusher. The slag crusher is used for secondary crushing of the waste rock slag after preliminary crushing by the waste rock crusher. The spiral pulverizer is used for finally crushing the slag after secondary crushing through the progressive shearing and extrusion action of the spiral blades on the double spiral shafts with opposite rotation directions. The crushed mixed abrasive is screened and then output as abrasive particles of the required particle size.

2. The device for converting waste rock into abrasive after abrasive water jet rock breaking according to claim 1, characterized in that, The waste rock crusher includes a crushing body, a driving motor is installed on the outer wall of the crushing chamber of the crushing body, a transmission shaft is rotatably connected to the inner wall of the crushing chamber of the crushing body, a pulley is connected to the motor shaft of the driving motor, the pulley is sleeved and matched with one end of the transmission shaft extending out of the crushing chamber wall through a V-belt, and a multi-pole mechanical gear is fixedly connected to the transmission shaft located in the crushing chamber.

3. The device for converting waste rock into abrasive after abrasive water jet rock breaking according to claim 2, characterized in that, A heating system is arranged on the crushing chamber wall of the crushing machine body.

4. The device for converting waste rock into abrasive after abrasive water jet rock breaking according to claim 1, wherein, The slag conveyor includes a variable frequency speed regulating motor, a main transmission drum and a slave transmission drum. The motor shaft of the variable frequency speed regulating motor is sleeved with the main transmission drum through a belt. The main transmission drum and the slave transmission drum are sleeved with a wire rope core transmission belt. The feed port and the discharge port of the wire rope core transmission belt are both connected with a conveying pipeline.

5. The device for converting waste rock into abrasive after abrasive water jet rock breaking according to claim 1, characterized in that, The slag crusher includes a crushing shell, a blade crusher is arranged inside the crushing shell, the blade crusher includes multiple stages of symmetrically arranged moving blades and fixed blades, each stage of moving blades and fixed blades includes two blades, and the two blades are connected and fixed by a supporting shaft, two supporting shafts are fixedly arranged on the inner wall of the crushing shell, the middle part of the supporting shaft of the multiple stages of symmetrically arranged moving blades is rotatably connected to one supporting shaft, and the middle part of the supporting shaft of the multiple stages of symmetrically arranged fixed blades is fixedly connected to another supporting shaft, an impact speed regulating motor is installed on the outer wall of the crushing shell, the motor shaft of the impact speed regulating motor is sleeved on one end of a supporting shaft extending to the outside of the crushing shell through a transmission belt and the multiple stages of moving blades, and the multiple stages of moving blades are extended to one end of two adjacent supporting shafts outside the crushing shell for transmission connection.

6. The device for converting waste rock after abrasive water jet rock breaking into abrasive according to claim 1, characterized in that The inner wall of the spiral crusher is provided with a barrel, and two rotating shafts are rotatably connected inside the barrel, and each of the rotating shafts is fixedly connected with a spiral blade, and two crushing motors are installed on the top of the spiral crusher body, and the motor shaft of each crushing motor is fixedly connected to a rotating shaft, and a discharge port is provided through the bottom of the spiral crusher body and the bottom of the barrel, and a clamp is radially fixed at the discharge port, and multiple layers of filter screens are clamped on the clamp, and a discharge pipe is also connected to the discharge port, and a recovery pipe is connected to the barrel side wall on the feed side of the filter screen, and the recovery pipe is communicated with the feed port of the barrel.

7. The device for converting waste rock into abrasive after abrasive water jet rock breaking according to claim 1, characterized in that, The device also includes an abrasive storage connected to the discharge pipe port of the spiral pulverizer for storing abrasive particles.

8. A method for converting waste rock into abrasive after abrasive water jet rock breaking, characterized in that, In this method, a device for converting waste rock into abrasive after abrasive water jet rock breaking as described in any one of claims 1-7 is adopted, and the method includes the following steps: S1. Collect the waste rock after abrasive water jet rock breaking; S2. Screen the waste rock raw materials with high hardness; S3. The waste rock crusher conducts preliminary crushing on the high-hardness waste rock after jet rock breaking, and the slag conveyor conveys the slag after preliminary crushing by the waste rock crusher to the slag crusher; S4. The slag crusher conducts secondary crushing on the waste rock slag after preliminary crushing by the waste rock crusher; S5. The spiral crusher conducts final crushing on the slag after secondary crushing, and screens and selects abrasive particles with the required particle size; S6. Conduct heat treatment and impurity treatment on the abrasive particles to improve the quality of the screened abrasive.

9. The method for converting waste rock into abrasive after abrasive water jet rock breaking according to claim 8, characterized in that, The specific operation of step S1 to collect the waste rock after abrasive water jet rock breaking is: use a robotic arm to collect the waste rock mixture after abrasive water jet rock breaking, and conduct vibrating screening treatment on the waste rock mixture to separate the waste rock from other impurities.

10. The method for converting waste rock into abrasive after abrasive water jet rock breaking according to claim 8, characterized in that, The specific operation of step S6 to conduct heat treatment and impurity treatment on the abrasive particles to improve the quality of the screened abrasive is: conduct high-temperature calcination on the abrasive particles that meet the particle size requirements after multiple crushing to eliminate the moisture carried by the abrasive and achieve drying, and reduce the temperature of the abrasive.

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