Efficient crushing device for preparing tungsten carbide powder and preparation process of efficient crushing device

Abstract

The invention discloses an efficient crushing device for tungsten carbide powder preparation and a preparation process thereof, and is applied to the technical field of tungsten carbide pulverization, the efficient crushing device comprises a machine table, and a control table, a rotary drum, a transmission mechanism and a support which are arranged outside the machine table, a data processor is arranged in the control table, the rotary drum is horizontally arranged on the upper surface of the machine table, and the rotary drum is arranged on the lower surface of the machine table; a feeding box is arranged on one side of the feeding end of the rotary drum, a ball inlet is formed in the middle of the outer surface of the rotary drum, a baffle is connected to the ball inlet in a sealed mode, a plurality of steel balls are placed in the rotary drum in advance, the transmission mechanism is arranged on the side away from the rotary drum, and the support is arranged on the side, away from the rotary drum, of the discharging end of the rotary drum. And a second telescopic part is movably connected to the support through a rod piece, the output end of the second telescopic part faces the rotary drum, the output end of the second telescopic part is fixedly connected with a clamping ring part, the outer ring of the clamping ring part is of a bearing structure, and the efficient crushing procedure of tungsten carbide powder is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial equipment, and particularly to an efficient pulverizing device for preparing tungsten carbide powder and its preparation process. Background Art

[0002] Tungsten carbide has important applications in the field of hard alloy materials due to its high melting point, high hardness, high toughness, wear resistance, and high thermal conductivity, especially in the field of cutting tool materials; during the preparation process of tungsten carbide powder, the performance of the pulverizing device directly affects the quality and production efficiency of the powder; existing pulverizing devices have problems such as incomplete pulverization and uneven pulverization, resulting in low efficiency and inconvenient discharging.

[0003] When performing the pulverizing process, a ball mill is usually used. Due to its extremely high hardness, it is difficult to directly pulverize tungsten carbide, but effective pulverization can be achieved through the ball milling method. The ball mill can gradually pulverize tungsten carbide particles through the impact and grinding of steel balls; among them, the main working part of the ball mill is a rotating cylinder that is horizontally placed on two large bearings. The rotating cylinder is filled with grinding media of a certain shape and size, such as steel balls. When the ball mill rotates, the grinding media adheres to the inner wall of the cylinder under the action of centrifugal force and friction with the inner wall of the cylinder and rotates with the cylinder. After being carried to a certain height, it freely falls, impacts the material at the bottom and breaks it; at the same time, the grinding media slides and rolls in the cylinder, further grinding the material and making it gradually finer.

[0004] However, the humidity existing in tungsten carbide itself will cause material adhesion on the surface of the steel balls, resulting in poor pulverization effect. Therefore, it is necessary to provide an efficient pulverizing device for preparing tungsten carbide powder and its preparation process to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an efficient pulverizing device for preparing tungsten carbide powder and its preparation process to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solution: An efficient pulverizing device for preparing tungsten carbide powder, including a machine table and a control console arranged outside the machine table, and a data processor is arranged inside the control console; A rotating cylinder, the rotating cylinder is horizontally arranged on the upper surface of the machine table, a feeding box is arranged on one side of the feeding end of the rotating cylinder, an inlet for balls is opened in the middle of the outer surface of the rotating cylinder, a baffle is hermetically connected at the inlet for balls, and a number of steel balls are pre-placed inside the rotating cylinder; A transmission mechanism, the transmission mechanism is arranged on the side far from the rotating cylinder; A bracket is provided on one side of the discharge end of the rotary drum. A second telescopic part is movably connected to the bracket through a rod. The output end of the second telescopic part faces the rotary drum and is fixedly connected with a clamping ring part. The clamping ring part is convex-shaped and has a hollow structure inside. The outer ring of the clamping ring part is a bearing structure, and an exhaust pipe is provided at the hollow structure; Wherein, a humidity detector is connected to the inner wall of the exhaust pipe, and a second air pipe is communicated with the exhaust pipe. The second air pipe penetrates through the clamping ring part and is supported and connected to the bracket; A first air pipe is communicated inside the feeding box. The other end of the first air pipe is connected to an air pump one, and a heating wire is further provided inside the first air pipe.

[0007] According to the above technical solution, a screening machine is further provided on one side of the discharge end of the rotary drum and is located below the bracket. A sieve is provided inside the screening machine. Below the sieve is the bottom plate of the screening machine. The lower end of the screening machine is fixedly connected with a material distribution box. The inside of the material distribution box is divided into an upper cavity and a lower cavity. The upper cavity leads to the sieve, and the lower cavity leads to the bottom plate. An inclined downward first inclined plate is provided inside the upper cavity, and an inclined downward second inclined plate is provided inside the lower cavity. A conveying part is provided below the inclined direction of the first inclined plate.

[0008] According to the above technical solution, the other end of the second air pipe is connected to a three-way valve, one end is connected to an air pump two, and the other end is connected to external air; the air pump two is set as a two-way pump body, and the second air pipe is of a telescopic hose structure.

[0009] According to the above technical solution, the humidity detector is signal-connected to a data processor, and calculates and processes the obtained material humidity to establish a humidity change rate θ T , θ T = , S0 is the ambient humidity of the space pre-obtained by the humidity detector, and S T is the material humidity detected by the humidity detector at the discharge end. T is the serial number of the detection time and is used for marking. T takes values from 1 to m, and m is a positive integer; is the maximum value of the allowable wet difference preset in advance. Therefore, 0 ≤ θ T ≤ 1.

[0010] According to the above technical solution, a material changing box is provided below the machine table, and a sorting component is provided inside the material changing box; The sorting component includes a set of brush plates, a sieve plate, a feeding plate, and a support plate. Long strip-shaped grooves are formed on one side of each brush plate close to the sieve plate. The set of brush plates are respectively fixedly connected to the inner walls on both sides of the material changing box parallel to the length direction of the rotating cylinder. A number of brushes are arranged on the surface of the brush plates. The sieve plate is fixedly connected to one side where the two brush plates are close to each other. The sieve plate is arranged obliquely downward. The higher end of the sieve plate is fixedly connected to the inner wall of the material changing box, and the lower end of the sieve plate is fixedly connected to the feeding plate. A circular groove is formed in the middle of the feeding plate, and the remaining sides of the feeding plate are fixedly connected to the support plate.

[0011] According to the above technical solution, a limiting plate is arranged above the connection between the brush plate and the support plate, and a driving part is connected to the top side of the limiting plate close to the box wall.

[0012] According to the above technical solution, a gravity detection plate is arranged directly below the feeding plate. A groove is formed on the upper surface of the gravity detection plate, and a gravity detection unit is installed inside the groove. A blanking plate is fixedly connected to the left side of the feeding plate, and the blanking plate is fixedly connected to the inner wall of the material changing box. The blanking plate is arranged obliquely downward and is provided with a rolling groove suitable for the steel balls to roll inside. Scanning parts are respectively embedded and fixed on the inner walls at both ends of the diameter length of the circular groove of the feeding plate.

[0013] According to the above technical solution, a clamping part is arranged between the feeding plate and the fourth telescopic part and the fifth telescopic part; The clamping part includes a third telescopic part. The third telescopic part is a two-way telescopic cylinder. Transverse sliding rods are fixedly connected to the front and rear telescopic ends of the third telescopic part. The sliding rods penetrate through and are connected to support blocks. The support blocks are distributed on and fixed to both sides of the lower surface of the feeding plate. Chute grooves are respectively formed inside the feeding plate, and the inner parts of the chute grooves are slidably connected to the surfaces of the sliding rods.

[0014] According to the above technical solution, a fourth telescopic part is arranged on one side of the gravity detection plate away from the blanking plate, and a first push plate is fixedly connected to the output end of the fourth telescopic part. A fifth telescopic part is arranged at the rear side of the gravity detection plate, and a second push plate is fixedly connected to the output end of the fifth telescopic part to realize the distinction between qualified and unqualified steel balls.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: By setting up a transmission mechanism and a rotating drum, the crushing process is started at the control console. The transmission mechanism drives the rotating drum to rotate at a set speed r. The feeding port maintains a certain feeding volume to continuously feed tungsten carbide. The tungsten carbide entering the rotating drum is crushed under the impact of steel balls, and with the help of flowing air, the humidity detector is signal-connected to the data processor to calculate and process the humidity of the obtained material, establish a humidity change rate, obtain the material humidity data according to each preset detection time, and take corresponding measures to ensure that an effective and efficient crushing process can be carried out in the drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall front view structural schematic diagram of the present invention; Figure 2 is the present invention Figure 1 schematic diagram of the state where the material changing box is removed; Figure 3 is the present invention Figure 1 right view structural schematic diagram; Figure 4 is the structural schematic diagram of the material distribution box of the present invention; Figure 5 is the present invention Figure 2 schematic diagram of the enlarged structure of area A; Figure 6 is the present invention Figure 2 schematic diagram of the enlarged structure of area B; Figure 7 is the top view structural schematic diagram of the material changing box of the present invention; Figure 8 is the sectional view structural schematic diagram of the material changing box of the present invention; Figure 9 is the present invention Figure 8 schematic diagram of the enlarged structure of area C; Figure 10 is the schematic diagram of the circular groove setting of the present invention; Figure 11 is the present invention Figure 10 schematic diagram of the enlarged structure of area D; In the figure: 1. Machine platform; 2. Feeding box; 3. Transmission mechanism; 4. Rotary drum; 5. First telescopic part; 6. Baffle; 7. Screening machine; 8. Material distribution box; 9. Conveying part; 10. Material changing box; 11. First air pipe; 12. Support; 13. Positioning block; 14. Brush board; 15. Strip-shaped groove; 16. Sieve plate; 17. Support plate; 18. Limiting plate; 19. Driving part; 20. Second telescopic part; 21. Snap ring part; 22. Exhaust pipe; 23. Second air pipe; 24. Ring-shaped cover; 25. Feeding plate; 26. Third telescopic part; 27. Support block; 28. Chute; 29. Slide bar; 30. Fourth telescopic part; 31. Fifth telescopic part; 32. Gravity detection plate; 33. Feeding plate; 34. First push plate; 35. Second push plate; 36. First inclined plate; 37. Second inclined plate; 38. Scanning part. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figure 1 , the present invention provides a technical solution: an efficient pulverizing device for preparing tungsten carbide powder, including a machine platform 1 and a console arranged outside. A data processor is arranged inside the console for inputting the operation program of the tungsten carbide powder preparation process. A rotary drum 4 is supported and connected above the machine platform 1. The rotary drum 4 is composed of a cylinder and its inner lining, and is used for carrying out the ball milling and pulverizing process of tungsten carbide. The support connection method includes but is not limited to being arranged with bearings at both ends to ensure the rotating state of the rotary drum 4; the rotary drum 4 is horizontally arranged on the upper surface of the machine platform 1. A feeding box 2 is arranged on one side of the rotary drum 4. A feeding port is opened at the top of the feeding box 2. A feeding door is hinged on one side of the feeding port at the top of the feeding box 2. The feeding door is driven manually or electrically, and no limitation is made here; further, a transmission mechanism 3 is arranged on the side of the feeding box 2 away from the rotary drum 4. The transmission mechanism 3 uses structures such as a motor and a gear conveyor belt for power transmission; The output end of the transmission mechanism 3 is fixedly connected with a feeding pipe through a rod. The feeding pipe is installed inside the feeding box 2; the feeding pipe adopts a spiral structure to facilitate feeding transmission. The other end of the feeding pipe is fixedly connected to one side of the feeding end of the rotary drum 4. It should be noted that the inner walls of the feeding end and the discharging end of the rotary drum 4 are both provided with threads to facilitate feeding and discharging; the feeding pipe and the feeding box 2 are supported and connected by bearings; In the middle of the outer surface of the rotary drum 4, a ball inlet is provided for the feeding of steel balls. A baffle 6 is hermetically connected to the ball inlet for covering and contacting the ball inlet. A number of steel balls are pre-placed inside the rotary drum 4. When the transmission mechanism 3 is started, tungsten carbide and the mixture enter the inside of the rotary drum 4 through the feed inlet at the top of the feed hopper 2. The steel balls fall in a pre-set parabolic state to crush the tungsten carbide. Further, an elastic seal is fixedly connected inside the side of the baffle 6 close to the rotary drum 4 for sealing the gap between the baffle 6 and the rotary drum 4. The left and right sides of the seal are arranged to be inwardly angled, facilitating the movement of the baffle 6 driving the elastic seal. In the middle of the side of the baffle 6 perpendicular to the generatrix of the rotary drum 4, a first telescopic part 5 is fixedly connected. Outside the side of the baffle 6 away from the first telescopic part 5, a positioning block 13 is provided. At the position of the side of the baffle 6 facing the positioning block 12, a plug is fixedly connected. At the position of the baffle 6 corresponding to the plug, a jack is provided. When the baffle 6 seals the feed inlet, the output end of the first telescopic part 5 drives the baffle 6 to move towards the positioning block 13. Only when the plug is inserted into the jack can it be ensured that the moving position of the baffle 6 is in place.

[0019] First, the data processor is signal-connected to the transmission mechanism 3. The operator pre-adjusts the rotation speed of the output end of the transmission mechanism 3 through the console, so as to ensure that the steel balls are driven to crush the tungsten carbide in a set parabolic route. Record the total number of steel balls as n, and the rotation speed as r, where n is a positive integer. When feeding the steel balls, the transmission mechanism 3 drives the rotary drum 4 to rotate to an angle suitable for feeding. The first telescopic part 5 is started to drive the baffle 6 away from the ball inlet position, and n steel balls are fed. Subsequently, the first telescopic part 5 is started again to drive the baffle 6 to move to the ball inlet position, and the transmission mechanism 3 drives the rotary drum 4 to rotate back to Figure 1 the state shown to complete the feeding of the steel balls. After that, the crushing process is started at the console. The transmission mechanism 3 drives the rotary drum 4 to rotate at the set rotation speed r. The feed inlet maintains a certain feed rate for continuous feeding of tungsten carbide. The tungsten carbide entering the rotary drum 4 is crushed under the collision of the steel balls. Due to continuous feeding, the material level difference and the airflow movement formed inside the drum assist the tungsten carbide powder to flow towards the discharge end of the rotary drum 4.

[0020] Reference Figure 2 As shown in, a screening machine 7 is provided on one side of the discharge end of the rotary drum 4. The screening machine 7 separates the crushed tungsten carbide by vibration. A screen is provided inside the screening machine 7. Below the screen is the bottom plate of the screening machine 7. The screen is used to screen the tungsten carbide materials of qualified size. The conveying directions of the screen and the bottom plate are both set in an inclined direction from top to bottom. Reference Figure 3 、 Figure 4, a material distribution box 8 is fixedly connected to the lower end of the screening machine 7. The interior of the material distribution box 8 is divided into an upper chamber and a lower chamber. The upper chamber leads to the screen, and the lower chamber leads to the bottom plate, which are respectively used for the separate aggregation and transmission of materials. Further, a first inclined plate 36 inclined downward is arranged inside the upper chamber. Correspondingly, a second inclined plate 37 inclined downward is arranged inside the lower chamber. Among them, the inclination directions of the first inclined plate 36 and the second inclined plate 37 can be set in opposite directions to facilitate the separate conveyance of materials.

[0021] Among them, the tungsten carbide powder flowing towards the discharge end of the rotating cylinder 4 drops onto the screening machine 7. The screening machine 7 screens the qualified powder at a set vibration frequency. The tungsten carbide powder that does not form the required size in the ball milling and pulverizing process is defined as unqualified powder. The qualified powder is screened through the screen and falls onto the bottom plate, while the unqualified powder remains on the screen. Under the vibration action, the qualified powder and the unqualified powder respectively enter the lower chamber and the upper chamber of the material distribution box 8. The first inclined plate 36 and the second inclined plate 37 vibrate along with the screening machine 7, and under the vibration action, drive the tungsten carbide powder to move downward and discharge, realizing separate material conveyance.

[0022] A conveying part 9 is arranged below the inclined direction of the first inclined plate 36. The conveying part 9 is preferably a screw conveying structure for conveying tungsten carbide of unqualified size. This batch of tungsten carbide will undergo further pulverizing processes. Exemplarily, in Method 1, it is introduced into the rotating cylinder 4 through the feed inlet for another round of steel ball pulverization. Then, a feed pipeline will be connected to the discharge end of the conveying part 9 to convey the tungsten carbide material to the feed inlet. In Method 2, a subsequent air flow pulverization process is established, which will not be elaborated here.

[0023] Reference Figure 2 、 Figure 6 , a first air pipe 11 is internally connected to the inside of the feed box 2. The other end of the first air pipe 11 is connected to an air pump 1 (not shown in the figure); a heating wire is also arranged inside the first air pipe 11 for heating the air flow to form a hot air flow. A support 12 is erected above the screening machine 7. A second telescopic part 20 is movably connected to the support 12 through a rod. The output end of the second telescopic part 20 faces the rotating cylinder 4 and its output end is fixedly connected to a clamping ring part 21. The clamping ring part 21 is convex-shaped and hollow inside. The outer circle of the clamping ring part 21 is a bearing structure. An exhaust pipe 22 is arranged in the hollow part. A humidity detector is connected to the inner wall of the exhaust pipe 22. The exhaust pipe 22 is connected to a second air pipe 23. The second air pipe 23 penetrates through the clamping ring part 21 and is supported and connected to the support 12. The other end of the second air pipe 23 is also connected to a three-way valve, one end is connected to an air pump 2, the air pump 2 is set as a two-way pump body, and the other end is connected to the external air; it should be noted that the second air pipe 23 is a telescopic hose structure.

[0024] After the crushing process has been carried out for a period of time, the humidity inside the cylinder is detected by means of a flowing air current. Specifically, the corresponding valve opening of the second air delivery pipe 23 connected to the external air is opened, and the humidity detector pre-obtains the environmental humidity S0 of the space where it is located. Then, the second telescopic part 20 and the clamping ring part 21 move to Figure 2 and Figure 3 the position, that is, aligned with the discharge end. The first air pump starts with the primary power. The air current under the primary power is just able to contact the internal materials, exerting a negligible force on the tungsten carbide materials and not causing an obvious impact on the materials during the crushing process. The humidity of this air current is consistent with the environmental humidity S0. The humidity detector located at the discharge end detects the material humidity, denoted as S T , T is the serial number of the detection time, which serves as a marker. T takes values from 1 to m, and m is a positive integer; The humidity detector is signal-connected to the data processor, and calculates and processes the obtained material humidity to establish the humidity change rate θ T , θ T = , usually S T ≥S0, is the maximum value that the preset humidity difference is allowed to exist. Therefore, 0≤θ T ≤1; Since an over-wet environment will cause the surface of the steel balls to adhere to wet powder, affecting the collision effect of the steel balls, humidity control will be carried out according to the humidity change rate; Establish the first comparison coefficient θ ， and the second comparison coefficient θ ，， , 0<θ ， <θ ，， <1; Obtain the data of the material humidity according to the preset detection times, and conduct an analysis: When 0<θ T <θ ， is the normal humidity change range, defined as the normal humidity phenomenon. In this humidity case, the adhesion of powder to the surface of the steel balls will not occur; When θ ， ≤θ T <θ ，， is the adjustable humidity change range, defined as the humidity adjustable phenomenon. In this humidity case, the humidity inside the cylinder will be adjusted to prevent excessive adhesion of powder to the surface of the steel balls; When θ ，， ≤θ T <1 is the abnormal humidity change range, defined as the abnormal humidity phenomenon. In this humidity case, the serious adhesion problem of powder to the surface of the steel balls will occur; Accordingly, at each detection time, the instructions corresponding to A, B, and C are executed. A: When the data processor concludes that the humidity is normal, it will maintain the initial rotation mode, turn off the first air pump, end the flowing air current, and start the first air pump again during the next detection. B: When the data processor concludes that the humidity is adjustable, it will start the heating wire in the initial rotation mode to heat the flowing air current and dehumidify the inside of the cylinder, which can not only reduce the adhesion phenomenon on the surface of the steel balls but also prevent the over-wet phenomenon of tungsten carbide itself, and maintain the operating state of the first air pump until the humidity change rate is calculated again during the next detection to determine whether the original phenomenon has changed. C: When the data processor concludes that the humidity is abnormal, the data processor sends out an instruction to pause the crushing process, and the feeding port stops feeding. On the one hand, check the tungsten carbide material at the feeding port for humidity problems. On the other hand, perform the drying process on the materials inside the cylinder. Specifically, the transmission mechanism 3 drives the rotary drum 4 to rotate at an accelerated speed, the first air pump still operates at the initial power, the heating wire is started, and the drying of the remaining materials inside and the discharge of the materials are increased. Due to the action of the threads at the discharge end of the rotary drum 4, the steel balls remain in the cylinder; Regarding the conclusion in B, when the original phenomenon has not changed, it is also classified as an abnormal humidity phenomenon, and then instruction C is executed. When the original phenomenon has changed, instruction B is maintained.

[0025] Refer to again Figure 1 and Figure 2 , there is a material change box 10 provided below the machine table 1 for steel ball detection and replacement. Figure 1 It is a schematic front view of the overall structure. In order to better understand the structure of the material change box 10 from the overall structure, the material change box 10 located below the machine table 1 is moved out from below the machine table 1, as shown in Figure 2 shown; When an abnormal humidity phenomenon occurs, after the primary separation of the steel balls and tungsten carbide materials is completed, a secondary separation process of the materials on the surface of the steel balls is carried out. Specifically, the feeding door is closed, the output end of the second telescopic part 20 drives the clamping ring part 21 and the exhaust pipe 22 to move towards the discharge end of the rotary drum 4 and is connected by a bearing to the discharge end. The rotary drum 4 rotates at the original speed r, the heating wire is started, the first air pump is started at medium power, the corresponding valve port of the second air pipe 23 connected to the second air pump is opened, the second air pump is started in the forward direction, the air current introduced by the first air pump will be heated and enter the inside of the rotary drum 4. The material chips adhered to the surface of the steel balls will fall off under the action of heating and collision, and will be carried by the air current together with the material chips and discharged through the exhaust pipe 22 and the second air pump. After running for a period of time, the secondary separation process is completed.

[0026] After that, the transfer mechanism 3 drives the rotating cylinder 4 to rotate, so that the baffle 6 is just above the material changing box 10, and the baffle 4 stops running; the first telescopic part 5 starts and drives the baffle 6 away from the ball inlet, and the steel balls are discharged; in addition, the first air pump and the second air pump are both started at a high power, and the second air pump runs in the reverse direction, and the air flows in the rotating cylinder 4 in opposite directions, assisting in pushing the steel balls in the rotating cylinder 4 to flow and flow out towards the ball inlet position, completing the steel ball discharging process. Under the abnormal humidity phenomenon, the steel balls are recycled and the adhesion degree of their surfaces is inspected; compared with manual inspection, the inspection efficiency is improved, and the steel balls that do not need to be cleaned are intelligently screened and directly put into the next use.

[0027] A sorting component is arranged inside the material changing box 10. The sorting component includes a group of brush plates 14. A group of brush plates 14 are respectively fixedly connected to the inner walls on both sides of the material changing box 10 parallel to the length direction of the rotating cylinder 4. A number of brushes are arranged on the surface of the brush plates 14 for cleaning the surfaces of the steel balls and increasing the frictional force between the steel balls and the surfaces of the brush plates 14. A sieve plate 16 is fixedly connected to the side of the two groups of brush plates 14 close to each other. Long strip-shaped grooves 15 are opened on the sides of the brush plates 14 close to the sieve plate 16. The grooves 15 are used for discharging the tungsten carbide materials brushed off downward. The sieve plate 16 is used for sorting and placing the steel balls. The sieve plate 16 is arranged obliquely downward. The high end of the sieve plate 16 is fixedly connected to the inner wall of the material changing box 10. The low end of the sieve plate 16 is fixedly connected to a feed plate 25. A circular groove is opened in the middle of the feed plate 25. The diameter length of the circular groove is larger than the diameter length of the steel ball, which is convenient for the steel ball to enter. The remaining sides of the feed plate 25 are fixedly connected with support plates 17. The support plates 17 are all arranged towards the feed plate 25 and are fixed to the inner wall of the material changing box 10. Reference Figure 5 、 Figure 7 Above the connection between the brush plate 14 and the support plate 17, a limiting plate 18 is provided. A driving part 19 is connected to the top side of the limiting plate 18 close to the box wall. The driving part 19 is fixedly connected to the top of the material changing box 10 through another plate member. The driving part 19 forms a position limit for the rolling steel balls by driving the rotation of the limiting plate 18, so that they can be effectively sorted when being discharged. The above brush plates 14, grooves 15, sieve plates 16, grooves 15, feed plates 25, support plates 17, and driving parts 19 constitute a sorting component, and the feed plate 25 is arranged at the lowest horizontal plane of the sorting component, which is convenient for the rolling and discharging of the steel balls.

[0028] Reference Figure 8 、 Figure 9, a gravity detection plate 32 is arranged directly below the feeding plate 25. A groove is formed on the upper surface of the gravity detection plate 32, and a gravity detection unit is installed inside the groove, which can detect the gravity of the steel balls falling into the groove; a blanking plate 33 is fixedly connected to the left side of the feeding plate 25, and the blanking plate 33 is fixedly connected to the inner wall of the material changing box 10. The blanking plate 33 is arranged obliquely downward, and a rolling groove suitable for the steel balls to roll is formed inside; a steel ball outlet is formed at the lower end of the material changing box 10 close to the blanking plate 33 for discharging qualified steel balls. The bottom of the gravity detection plate 32 and the blanking plate 33 can also be fixedly connected inside the material changing box 10 through rods to improve the connection stability; An annular cover 24 is arranged between the sieve plate 16 and the blanking plate 33. The blanking plate 33 is located in the covered area below the annular cover 24. When the debris on the surface of the steel balls falls through the strip-shaped groove 15 and / or the sieve plate 16, it will not fall onto the blanking plate 33 under the shielding effect of the annular cover 24, improving the cleanliness of the qualified steel balls when passing through the blanking plate 33.

[0029] A fourth telescopic part 30 is arranged on the side of the gravity detection plate 32 far away from the blanking plate 33. The output end of the fourth telescopic part 30 is fixedly connected with a first push plate 34 for pushing the qualified steel balls onto the blanking plate 33; a fifth telescopic part 31 is arranged at the rear side of the gravity detection plate 32. The output end of the fifth telescopic part 31 is fixedly connected with a second push plate 35 for applying a thrust to the unqualified steel balls. Through the above settings, the distinction between qualified and unqualified steel balls is realized, which is convenient for replacing the steel balls in the rotating cylinder 4. The fourth telescopic part 30 and the fifth telescopic part 31 are arranged on the same horizontal line.

[0030] Further, referring to Figure 9 , a clamping part is arranged between the feeding plate 25 and the fourth telescopic part 30 and the fifth telescopic part 31 for supporting the steel balls. The clamping part includes a third telescopic part 26. The third telescopic part 26 is a two-way telescopic cylinder. The front and rear telescopic ends of the third telescopic part 26 are both fixedly connected with a horizontally arranged sliding rod 29. The sliding rod 29 is connected through a support block 27. The support blocks 27 are distributed on and fixed to both sides of the lower surface of the feeding plate 25. Sliding grooves 28 are respectively formed inside the feeding plate 25, and the inner parts of the sliding grooves 28 are slidably connected with the surfaces of the sliding rods 29; by driving the telescopic ends of the third telescopic part 26 to move the sliding rods 29 towards or away from each other, the clamping or releasing of the lower part of the steel balls by the sliding rods 29 is realized; Referring to Figure 11 , scanning parts 38 are respectively embedded and fixed on the inner walls at both ends of the diameter length of the circular groove of the feeding plate 25. The two scanning parts 38 can take spherical photos and scans when the steel balls fall, and obtain spherical data; among them, the above-mentioned electrical control components are all signal-connected to the data processor.

[0031] The steel balls enter the sorting component. When the steel balls move to the circular groove, the third telescopic part 26 controls the sliding rod 29 to move into a clamping state, supports the bottom of the steel balls for a set time, and then the third telescopic part 26 controls the sliding rod 29 to be in a released state. The originally clamped steel balls fall into the gravity detection plate 32. Before the next steel ball rolls into the circular groove, the third telescopic part 26 controls the sliding rod 29 to move into a clamping state; repeat the above steps to complete the orderly detection process of the steel balls. During the period when the steel balls fall into the gravity detection plate 32, two scanning parts 38 take pictures of the spherical surfaces of the steel balls, and the two groups of spherical surface data just form a complete spherical surface forming data; on the basis of algorithm recognition, dirt and damage are identified, and each steel ball will be numbered, denoted as j, where j takes positive integers. The gravity of the steel balls measured by the gravity detection unit is denoted as G j ; The gravity of the steel balls before the crushing process is G0. Continuing, the qualification of the steel balls will be comprehensively judged by combining gravity and spherical surface forming data: When the gravity detection unit detects G j <G0, it means that the steel balls are severely defective and are judged as unqualified steel balls, and are directly pushed to the bottom of the material changing box 10 by the second push plate 35. When the gravity detection unit detects G j ≥G0, it means that the steel balls need to be further judged; therefore: When it is identified that there are damages on the surface of the steel balls, they are directly judged as unqualified steel balls; When it is not identified that there are damages on the surface of the steel balls, it will be judged whether they are qualified according to the dirt amount on the surface of the steel balls, and an estimation formula △G of the steel balls is established, that is, △G = G j -§·s Q , § is the area conversion coefficient, with the unit of N·m -2 , s Q is the dirt area of the spherical surface, with the unit of m 2 , §·s Q is the estimated gravity of the dirt amount; If △G = G0 and s Q = 0, it means that the surface of the steel balls is clean and defective, and they are qualified steel balls; If △G = G0 and s Q >0, it means that the steel balls are defective and are unqualified steel balls; If G0 < △G < a·G0, where a is the allowable dirt adhesion coefficient, and a is a finite decimal between 1 and 1.10, and the value is determined according to the gravity of the steel balls; it will be judged whether they are qualified according to the magnitude of the estimated gravity of the dirt amount. If the estimated gravity of the dirt amount is small, then in the case of ignoring the dirt, they are judged as qualified steel balls; if the estimated gravity of the dirt amount is large, considering the situation of defect filling or large dirt, they are judged as unqualified steel balls. If △G≥a·G0, it is judged as an unqualified steel ball.

[0032] In summary, the qualified steel balls are judged and classified, and the qualified steel balls are directly recovered under the push of the first push plate 34; the steel balls left in the material replacement box 10 will be processed separately and need to be cleaned or directly discarded.

[0033] It should be noted that the above-mentioned mechanism setting in the material replacement box 10 can also be used to judge the service condition of steel balls after long-term use. The judgment method refers to the above content, that is, the quality of the steel balls is inspected after completing the batch ball milling process to obtain the service condition of the steel balls, so as to timely increase the number of steel balls in the ball milling process or adjust the parameters in the ball milling process to ensure the crushing effect of the material.

[0034] Among them, the above-mentioned device can also be used to clean the inner wall of the rotating drum 4 and the surface of the steel balls, that is, the first air pipe 11 and / or the second air pipe 23 are used as water inlet pipes, and the cleaning liquid is passed into the drum after connecting the water pump. The rotating drum 4 rotates, the discharge port is blocked, and the cleaning is completed; the waste water can be discharged from the ball inlet; the drain pipe is passed through the inside of the material changing box 10 to complete the drainage process and collect the cleaned steel balls. After drying to a certain extent, the above-mentioned steel ball detection process can be carried out to realize the multiple functions of the crushing device.

[0035] The above tungsten carbide powder preparation process is as follows: Step 1: Input the operation program of the preparation process and put in a set number of steel balls for the crushing process; Step 2: After the steel ball feeding is completed, the crushing process is started and the tungsten carbide is continuously fed at a certain feed rate; Step 3: During the tungsten carbide crushing process, the humidity in the cylinder is detected regularly with the help of the flowing airflow to establish the humidity change rate. The device will classify the humidity phenomenon and control the humidity according to the humidity change rate; When the humidity is normal or adjustable, maintain the crushing process; When abnormal humidity occurs, the crushing process is suspended and the process goes to step 5; Step 4: Screen and classify qualified powders at the set vibration frequency until the crushing process is completed; Step 5: Perform a multi-stage separation process of steel balls and tungsten carbide materials to facilitate the detection of steel balls; Step 6: Intelligently screen qualified steel balls for next use.

[0036] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0037] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An efficient pulverizing device for preparing tungsten carbide powder, characterized in that: Including: A machine platform (1) and a control console arranged outside the machine platform (1), and a data processor is arranged inside the control console; A rotary drum (4), the rotary drum (4) is horizontally arranged on the upper surface of the machine platform (1), a feeding box (2) is arranged on one side of the feeding end of the rotary drum (4), a ball inlet is arranged in the middle of the outer surface of the rotary drum (4), a baffle (6) is hermetically connected at the ball inlet, and a plurality of steel balls are pre-placed inside the rotary drum (4); A transmission mechanism (3), the transmission mechanism (3) is arranged on the side far from the rotary drum (4); A bracket (12), the bracket (12) is arranged on one side of the discharging end of the rotary drum (4), a second telescopic part (20) is movably connected to the bracket (12) through a rod, the output end of the second telescopic part (20) faces the rotary drum (4) and a clamping ring part (21) is fixedly connected to the output end, the clamping ring part (21) is convex and has a hollow structure inside, the outer ring of the clamping ring part (21) is a bearing structure, and an exhaust pipe (22) is arranged at the hollow structure; Wherein, a humidity detector is connected to the inner wall of the exhaust pipe (22), the exhaust pipe (22) is communicated with a second air pipe (23), and the second air pipe (23) penetrates through the clamping ring part (21) and is supported and connected to the bracket (12); A first air pipe (11) is internally communicated in the feeding box (2), the other end of the first air pipe (11) is connected with an air pump one, and a heating wire is also arranged inside the first air pipe (11).

2. The high-efficiency pulverizing device for preparing tungsten carbide powder according to claim 1, wherein: A screening machine (7) is also arranged on one side of the discharging end of the rotary drum (4), and is located below the bracket (12). A screen is arranged inside the screening machine (7), the bottom plate of the screening machine (7) is below the screen, the lower end of the screening machine (7) is fixedly connected with a material distribution box (8), the inside of the material distribution box (8) is divided into an upper cavity and a lower cavity, the upper cavity communicates with the screen, the lower cavity communicates with the bottom plate, a first inclined plate (36) inclined downward is arranged inside the upper cavity, a second inclined plate (37) inclined downward is arranged inside the lower cavity, and a conveying part (9) is arranged below the inclined direction of the first inclined plate (36).

3. The high-efficiency pulverizing device for preparing tungsten carbide powder according to claim 2, wherein: The other end of the second air pipe (23) is connected with a three-way valve, one end is connected with an air pump two, and the other end is connected to external air; the air pump two is set as a two-way pump body, and the second air pipe (23) is of a telescopic hose structure.

4. The high-efficiency pulverizing device for preparing tungsten carbide powder according to claim 3, wherein: The humidity detector is signal-connected to the data processor, calculates and processes the obtained material humidity, and establishes a humidity change rate θ T , θ T = , where S0 is the ambient humidity of the space pre-obtained by the humidity detector, and S T is the material humidity detected by the humidity detector located at the discharge end. T is the serial number of the detection time, which serves as a marker. T takes values from 1 to m, and m is a positive integer; is the maximum value of the allowable wet difference preset in advance. Therefore, 0 ≤ θ T ≤ 1.

5. The high-efficiency pulverizing device for preparing tungsten carbide powder according to claim 4, wherein: A material changing box (10) is arranged below the machine platform (1), and a sorting component is arranged inside the material changing box (10); The sorting component includes a set of brush plates (14), a sieve plate (16), a feeding plate (25), and a support plate (17). Long strip-shaped grooves (15) are formed on one side of each brush plate (14) close to the sieve plate (16). The set of brush plates (14) are respectively fixedly connected to the inner walls on both sides of the material changing box (10) parallel to the length direction of the rotating cylinder (4). A number of brushes are arranged on the surface of the brush plates (14). The sieve plate (16) is fixedly connected to one side where the two brush plates (14) are close to each other. The sieve plate (16) is arranged obliquely downward. The higher end of the sieve plate (16) is fixedly connected to the inner wall of the material changing box (10), and the lower end of the sieve plate (16) is fixedly connected to the feeding plate (25). A circular groove is formed in the middle of the feeding plate (25), and the remaining side surfaces of the feeding plate (25) are fixedly connected to the support plate (17).

6. The high-efficiency pulverizing device for preparing tungsten carbide powder according to claim 5, wherein: A limiting plate (18) is arranged above the connection between the brush plate (14) and the support plate (17), and a driving part (19) is connected to the top side of the limiting plate (18) close to the box wall.

7. An efficient pulverizing device for preparing tungsten carbide powder according to claim 6, characterized in that: A gravity detection plate (32) is arranged directly below the feeding plate (25). A groove is formed on the upper surface of the gravity detection plate (32), and a gravity detection unit is installed inside the groove. A blanking plate (33) is fixedly connected to the left side of the feeding plate (25). The blanking plate (33) is fixedly connected to the inner wall of the material changing box (10). The blanking plate (33) is arranged obliquely downward and is internally provided with a rolling groove suitable for the steel balls to roll. Scanning parts (38) are respectively embedded and fixed on the inner walls at both ends of the diameter length of the circular groove of the feeding plate (25).

8. The high-efficiency pulverizing device for preparing tungsten carbide powder according to claim 7, wherein: A clamping part is arranged between the feeding plate (25), the fourth telescopic part (30), and the fifth telescopic part (31); The clamping part includes a third telescopic part (26). The third telescopic part (26) is a two-way telescopic cylinder. Horizontal sliding rods (29) are fixedly connected to the front and rear telescopic ends of the third telescopic part (26). The sliding rods (29) penetrate through and are connected to support blocks (27). The support blocks (27) are distributed on and fixed to both sides of the lower surface of the feeding plate (25). Sliding grooves (28) are respectively formed inside the feeding plate (25), and the inner parts of the sliding grooves (28) are respectively slidably connected to the surfaces of the sliding rods (29).

9. The high-efficiency pulverizing device for preparing tungsten carbide powder according to claim 8, characterized in that: A fourth telescopic part (30) is arranged on one side of the gravity detection plate (32) away from the blanking plate (33). The output end of the fourth telescopic part (30) is fixedly connected to a first push plate (34). A fifth telescopic part (31) is arranged at the rear side of the gravity detection plate (32). The output end of the fifth telescopic part (31) is fixedly connected to a second push plate (35) to distinguish qualified and unqualified steel balls.

10. A preparation process of tungsten carbide powder, which uses an efficient pulverizing device for preparing tungsten carbide powder described in claim 9, is characterized in that: The process is as follows: Step 1: Input the operating program of the preparation process, and put in a set number of steel balls for the crushing process; Step 2: After the steel ball feeding is completed, control the start of the crushing process, and keep a certain feeding amount of tungsten carbide for continuous feeding; Step 3: During the tungsten carbide crushing process, the humidity inside the cylinder is detected regularly with the help of flowing air, and the humidity change rate is established. The device will classify humidity phenomena and control humidity according to the humidity change rate; When normal humidity phenomena or humidity adjustable phenomena occur, the crushing process is maintained; When abnormal humidity phenomena occur, the crushing process is suspended; proceed to Step 5; Step 4: The qualified powder is screened and classified at the set vibration frequency until the crushing process ends; Step 5: A multi-stage separation process of steel balls and tungsten carbide materials is carried out to facilitate the detection of steel balls; Step 6: The qualified steel balls are intelligently screened for the next use.

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