A ball mill for machining of cemented carbide material

Abstract

The utility model provides a kind of ball mill for hard alloy material processing, comprising: cylinder, two ends are rotatably connected support frame and are driven to rotate by ball mill driving device, cylinder two ends are respectively arranged as feed end and discharge end and internally are equipped with ball mill medium;Screening mechanism, comprising: screening device, including the shell of sealed rotary connection discharge end, the discharge channel that is arranged in shell and is sequentially communicated, screening channel, return channel, discharge channel is communicated discharge end, return channel is through return pipe and is penetrated discharge end to cylinder inside, discharge channel is equipped with the discharge driving device for driving the overflow of mud of discharge end, and the screening channel bottom is detachably equipped with filter element, return channel is equipped with the return driving device for driving the output of screening channel large particle material towards return pipe moves;Material receiving device.Not only can realize the screening of material, but also can greatly improve the return efficiency and return amount of large particle material, reduce raw material waste rate.

Description

Technical Field

[0001] This utility model relates to the field of ball mills, specifically to a ball mill for processing cemented carbide materials. Background Technology

[0002] Ball mills are key pulverizing equipment for materials after crushing. Their cylinders contain a certain number of steel balls as grinding media. Based on the grinding method, they can be divided into dry grinding and wet grinding; based on the discharge method, they are divided into grate type and overflow type.

[0003] In the processing of cemented carbide materials, wet grinding combined with an overflow discharge ball mill is typically used to crush the raw materials. The material discharged from this equipment is in the form of slurry and needs to be screened to separate particles that meet the standard particle size before it can be output. To avoid waste of raw materials, existing technology usually returns the large particles screened out to the feed end of the ball mill through a conveying pipeline, mixes them with the raw material blocks, and then feeds them back into the mill for crushing.

[0004] However, this design has certain drawbacks: large particles need to be transported a long distance from the discharge end back to the feed end, and are prone to remaining in the pipeline during the process, which not only leads to waste of raw materials but may also cause blockages. In addition, these materials that are returned simply because their particle size does not meet the standard need to undergo the entire ball milling process again, which can easily cause over-grinding, increasing energy consumption and reducing overall grinding efficiency.

[0005] The research objective of this utility model is to design a ball mill for processing cemented carbide materials, addressing the problems existing in the prior art. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a ball mill for processing cemented carbide materials, which can effectively solve the problems existing in the prior art.

[0007] The technical solution of this utility model is:

[0008] A ball mill for machining cemented carbide materials, comprising:

[0009] The cylinder is rotatably connected to support frames at both ends and driven to rotate by a ball mill drive device. The two ends of the cylinder are respectively set as the feed end and the discharge end, and the inside is filled with ball milling media.

[0010] Screening mechanism, including:

[0011] A screening device includes a housing that is rotatably connected to the discharge end, a discharge channel, a screening channel, and a return channel that are disposed within the housing and connected in sequence. The discharge channel is connected to the discharge end, and the return channel extends through the discharge end to the cylinder via a return pipe. The discharge channel is provided with a discharge drive device for driving the slurry overflowing from the discharge end toward the screening channel. The bottom of the screening channel is detachably provided with a filter element for intercepting large particles. The return channel is provided with a return drive device for driving the large particles output from the screening channel toward the return pipe.

[0012] The receiving device has a receiving end that is connected to the lower side of the filter element and is used to receive small particulate materials filtered through by the filter element.

[0013] Furthermore, the screening channel is U-shaped, and the discharge channel and return channel are respectively connected to the two ends of the screening channel. The side wall of the housing is provided with a slot corresponding to the bottom of the screening channel, and the slot is used for detachable installation of the filter element.

[0014] Furthermore, the housing is embedded with vibrating groove plates with openings facing each other. Elastic sheets are respectively provided on the upper and lower sides of the vibrating groove plates. The side wall of the housing is provided with a plurality of vibration driving devices that connect the two vibrating groove plates through a rotating shaft. An eccentric wheel is sleeved on the rotating shaft. The slot is formed between the two vibrating groove plates. The filter element includes a frame for screwing into the slot and a filter screen disposed in the frame. When the vibration driving device drives the rotating shaft and the eccentric wheel to rotate, it drives the two vibrating groove plates to vibrate, thereby driving the filter element to vibrate and filter.

[0015] Furthermore, the discharge drive device includes a discharge spiral blade rotatably disposed in the discharge channel and a discharge motor for driving the discharge spiral blade to rotate; the return drive device includes a return spiral blade rotatably disposed in the return channel and a return motor for driving the return spiral blade to rotate.

[0016] Furthermore, the cylinder is divided by a filter plate to form a coarse grinding chamber and a fine grinding chamber that are connected and respectively connected to the feed end and the discharge end. The coarse grinding chamber is provided with a number of large grinding balls, and the fine grinding chamber is provided with a number of large grinding balls and a number of small grinding balls. The return pipe passes through the discharge end into the cylinder and extends downward to the bottom of the fine grinding chamber to form a return end.

[0017] Furthermore, it also includes a vibration damping mechanism, which comprises:

[0018] The base is located below the cylindrical body;

[0019] A plurality of vibration damping components are disposed on the base. Each vibration damping component includes rollers connected vertically, a vibration damping spring that extends vertically, and an airbag that extends vertically. The airbags are respectively connected to an exhaust device and an inflation device. The rollers roll against the outer wall of the cylinder. A follower plate is provided between the vibration damping springs and the airbags. A trigger is provided on one side of the follower plate. The base is provided with a plurality of pressure-increasing triggering devices located below the follower plate and corresponding to the triggers. The pressure-increasing triggering devices are used to trigger the inflation device to inflate the corresponding airbag. When the vibration intensity of the cylinder increases, causing the vertical extension stroke of the vibration damping spring to increase to the point that the trigger triggers the pressure-increasing triggering device, the corresponding inflation device inflates and pressurizes the airbag.

[0020] Furthermore, the cylinder extends forward and backward, and a plurality of vibration damping components are arrayed below the cylinder. The vibration damping springs and airbags of the vibration damping components in the same row on the left and right are connected by the same follower plate. The rollers of the vibration damping components in the same row are supported by the elastic force of the vibration damping springs and airbags and roll against the outer wall of the cylinder and are distributed along the outer periphery of the cylinder. The base is provided with a plurality of limiting grooves corresponding to the four corners of the follower plate and used to limit and guide the lifting and lowering of the follower plate. The pressurization triggering device is a sensing sensor provided on the side wall of the limiting groove.

[0021] Furthermore, the side wall of the limiting groove plate is also provided with a voltage stabilizing triggering device located between the follower plate and the pressure boosting triggering device and corresponding to the triggering element.

[0022] Furthermore, the upper and lower sides of the follower plate extend in opposite directions and are provided with an upper guide cylinder and a lower guide cylinder. Each vibration damping component also includes a lower cover body disposed on the base and slidably sleeved in the lower guide cylinder, and an upper cover body slidably sleeved in the upper guide cylinder. The airbag is disposed in the lower cover body and its upper and lower ends are respectively connected to the base and the follower plate. The vibration damping spring is disposed in the upper cover body and its upper and lower ends are respectively connected to the upper cover body and the follower plate. The roller is rotatably disposed on the top of the upper cover body.

[0023] Furthermore, the airbag is an air spring, the exhaust device is an exhaust one-way valve, the bottom of the airbag is provided with an inflation valve port connected to the inflation device and an exhaust valve port connected to the exhaust one-way valve, and both the inflation device and the exhaust one-way valve are located inside the base.

[0024] Therefore, the beneficial effects of this utility model are:

[0025] 1. By adding a screening device, the slurry material discharged from the ball mill discharge end passes through the discharge channel, screening channel, and return channel in sequence. The filter element in the screening channel traps large particles and filters out small particles to the receiving device. The trapped large particles accumulate and are pushed towards the return channel, returning to the ball mill cylinder through the discharge end for further crushing before being discharged again. This not only achieves material screening but also allows large particles that do not meet the requirements to be quickly and short-stroke returned to the ball mill cylinder through the discharge end. This replaces the existing design of conveying large particles to the cylinder feed end through a long-stroke conveying pipe for return, which can greatly improve the return efficiency and amount of large particles, reduce raw material waste, and allow large particles that have already been crushed but whose particle size is not up to standard to return to the rear end of the cylinder for further crushing instead of returning to the cylinder feed end. As the material flows towards the discharge end, it only undergoes short-stroke secondary crushing, which can reduce the waste of ball mill energy due to over-grinding and improve the crushing efficiency of the ball mill.

[0026] 2. By setting the screening channel to a U-shape, the length of the screening channel is extended, allowing the material to be fully screened as it enters the screening channel driven by the discharge drive device and moves towards the return channel. This prevents small particles from returning to the return channel. Furthermore, the U-shaped folding extension of the screening channel shortens the return journey of the material after screening, allowing the material to be immediately driven back into the cylinder by the return drive device after being output from the screening channel, thus improving the return efficiency of large particles.

[0027] 3. By adding vibrating trough plates and a vibration drive device, the vibration drive device drives the rotating shaft and eccentric wheel to rotate, causing the two vibrating trough plates to vibrate, which in turn causes the filter elements to vibrate and filter. The rotation of the eccentric wheel achieves minute vibrations of the vibrating trough plates and filter elements, simulating the shaking action of the filter elements. This allows small particles to pass through the filter screen more quickly and fall down, preventing small particles from clogging the filter screen and affecting the filtration effect. Furthermore, the addition of elastic sheets buffers the vibration of the vibrating trough plates and provides a sealing effect.

[0028] 4. By connecting the damping spring and the airbag in series, and through the cooperation between the trigger and the pressurization triggering device, when the vibration intensity of the cylinder increases, causing the damping spring to extend and retract to the point that the trigger triggers the pressurization triggering device, the corresponding inflation device inflates and pressurizes the airbag. After a certain period of time, the airbag is then vented back to its normal state through the exhaust device. This increases the support strength of the airbag when the vibration intensity of the cylinder increases, preventing the damping spring from over-extension and causing it to fail in its vibration damping support of the cylinder, or even causing the roller to detach directly from the cylinder. This achieves the adjustable effect of increasing the vibration damping intensity of several damping components as the vibration intensity of different parts of the cylinder increases, improving the overall vibration damping effect of the damping mechanism, and thus extending the service life of the ball mill.

[0029] 5. Due to the front-to-back extension of the cylinder, the material inside is gradually crushed from front to back, and the grinding media inside falls after rotating circumferentially. Therefore, the vibration intensity in the circumferential direction of the cylinder is similar. Thus, connecting the vibration damping components on the left and right sides in the same row through the same follower plate can achieve the effect that the vibration damping intensity of the vibration damping components changes with the local vibration intensity of the cylinder. Furthermore, the inflation of three airbags can be controlled by a single sensor, which improves the adjustment efficiency of the vibration damping intensity of the vibration damping components and saves costs. In addition, the setting of several limiting slot plates guides the lifting and lowering of the follower plate, which improves the stability of the vibration damping spring and airbag extension and contraction, as well as the lifting and lowering of the follower plate, thereby improving the overall stability of the vibration damping mechanism.

[0030] 6. After the corresponding inflation device inflates and pressurizes the airbag, if the pressure stabilizing trigger device is not triggered for a long time, it is determined that the height of the follower plate is higher than the pressure stabilizing trigger device for a long time, and the vibration intensity of the cylinder decreases. The exhaust device is then controlled to vent and depressurize the airbag to the normal air pressure state. This ensures that the airbag is depressurized in time after the vibration intensity of the cylinder increases and then decreases, avoiding the situation where the airbag is kept in a high pressure state, which would reduce the extension space of the damping spring and cause the rolling to continue to push against the cylinder. At the same time, it can ensure that the normal air pressure state of the airbag is sufficient to provide stable damping support for the damping spring. Attached Figure Description

[0031] Figure 1 This is a cross-sectional view of a ball mill, in which the screening mechanism and vibration damping mechanism are not cut out.

[0032] Figure 2 This is a schematic diagram of the screening mechanism.

[0033] Figure 3 This is a schematic diagram of the cross-sectional structure of the screening device.

[0034] Figure 4 for Figure 3 A three-dimensional structural diagram after removing the discharge drive device and the return drive device.

[0035] Figure 5 This is a schematic diagram of the filter element.

[0036] Figure 6 This is a schematic diagram of the vibration drive device.

[0037] Figure 7 This is a schematic diagram of the longitudinal section of the screening device.

[0038] Figure 8 This is a schematic diagram of the vibration damping mechanism.

[0039] Figure 9 This is a schematic diagram of the vibration damping components arranged in the same row on the left and right.

[0040] Figure 10 for Figure 9 A schematic diagram of the longitudinal section structure. Detailed Implementation

[0041] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings:

[0042] refer to Figure 1-10 A ball mill for machining cemented carbide materials, comprising:

[0043] The cylinder 5 is rotatably connected to the support frame at both ends and is driven to rotate by the ball mill drive device. The two ends of the cylinder 5 are respectively set as the feed end 52 and the discharge end 51, and the inside is filled with ball milling media.

[0044] Screening mechanism, including:

[0045] The screening device 1 includes a housing 11 that is rotatably connected to the discharge end 51, a discharge channel 12, a screening channel 13, and a return channel 14 disposed within the housing 11 and connected in sequence. The discharge channel 12 is connected to the discharge end 51, and the return channel 14 passes through the discharge end 51 to the cylinder 5 via a return pipe 15. The discharge channel 12 is provided with a discharge drive device 16 for driving the slurry overflowing from the discharge end 51 to move toward the screening channel 13. The bottom of the screening channel 13 is detachably provided with a filter element 17 for intercepting large particles. The return channel 14 is provided with a return drive device 18 for driving the large particles output from the screening channel 13 to move toward the return pipe 15.

[0046] The receiving device 2 has a receiving end 21 that is connected to the lower side of the filter element 17 and is used to receive small particulate materials filtered by the filter element 17.

[0047] The above structure, through the addition of screening device 1, allows the slurry material discharged from the ball mill discharge end 51 to pass through the discharge channel 12, screening channel 13, and return channel 14 in sequence. During this process, the filter element 17 of screening channel 13 traps large particles and filters out small particles to the receiving device 2. The trapped large particles accumulate and are pushed towards the return channel 14, returning to the ball mill cylinder 5 via discharge end 51 for further crushing before being discharged again. This not only achieves material screening but also allows for the rapid and short-term removal of non-compliant large particles. The material is returned to the ball mill cylinder 5 through the discharge end 51, replacing the existing design of conveying large particles to the feed end 52 of the cylinder 5 via a long-stroke conveying pipe. This greatly improves the return efficiency and amount of large particles, reduces raw material waste, and allows large particles that have already been crushed but whose particle size is not up to standard to return to the rear end of the cylinder 5 for further crushing instead of returning to the feed end 52. As the material flows towards the discharge end 51, it only undergoes a short-stroke secondary crushing, which reduces the waste of ball mill energy due to over-grinding and improves the crushing efficiency of the ball mill.

[0048] To improve material screening efficiency and return efficiency, the screening channel 13 is U-shaped. The discharge channel 12 and return channel 14 are connected to the two ends of the screening channel 13, respectively. The side wall of the housing 11 is provided with a slot corresponding to the bottom of the screening channel 13, which is used for detachable installation of the filter element 17. By making the screening channel 13 U-shaped, the length of the screening channel 13 is extended, allowing the material to be fully screened as it enters the screening channel 13 driven by the discharge drive device 16 and moves towards the return channel 14. This prevents small particles from returning to the return channel 14. Furthermore, the U-shaped extension of the screening channel 13 shortens the return journey after screening, allowing the material to be immediately driven back into the cylinder 5 by the return drive device 18 after being output from the screening channel 13, thus improving the return efficiency of large particles.

[0049] To improve material screening efficiency, the housing 11 is embedded with vibrating groove plates 111 with openings facing each other. Elastic sheets 112 are respectively provided on the upper and lower sides of the vibrating groove plates 111. Specifically, the elastic sheets 112 can be made of materials such as rubber or silicone. The sidewall of the housing 11 is provided with several vibration drive devices 19 connected to the two vibrating groove plates 111 via a rotating shaft 191. An eccentric wheel 192 is sleeved on the rotating shaft 191, forming a slot between the two vibrating groove plates 111. The filter element 17 includes a frame 171 for screwing into the slot and a filter screen 172 disposed within the frame 171. The above structure, through the addition of the vibrating groove plates 111 and the vibration drive devices 19, enables the vibration drive devices 19 to drive the rotating shaft 191 and the eccentric wheel 192 to rotate, thereby causing the two vibrating groove plates 111 to vibrate, and consequently causing the filter element 17 to vibrate and filter. The rotation of the eccentric wheel 192 causes the vibrating trough plate 111 and the filter element 17 to vibrate slightly, simulating the shaking action of the filter element 17. This allows small particles to pass through the filter screen 172 more quickly and fall down, while preventing small particles from clogging the filter screen 172 and affecting the filtration effect. In addition, the elastic sheet 112 is used to buffer the vibration of the vibrating trough plate 111 and provide a sealing effect.

[0050] To improve the material conveying efficiency of the discharge channel 12 and the return channel 14, the discharge drive device 16 includes a discharge spiral blade 161 rotatably disposed within the discharge channel 12 and a discharge motor 162 for driving the discharge spiral blade 161 to rotate. The return drive device 18 includes a return spiral blade 181 rotatably disposed within the return channel 14 and a return motor 182 for driving the return spiral blade 181 to rotate. Specifically, one end of the shaft 191 of the discharge spiral blade 161 and the return spiral blade 181 rotatably passes through the housing 11 and is connected to the discharge electrolysis and return motor 182, respectively; the other end is rotatably connected to the inner wall of the discharge channel 12 and the inner wall of the return channel 14, respectively, thereby ensuring the stability of the rotation drive of the discharge spiral blade 161 and the return spiral blade 181.

[0051] To improve the stability of large particle material return, the return pipe 15 extends through the discharge end 51 into the cylinder 5 and then downwards to the bottom of the cylinder 5 to form a return end 151. By extending the return end 151 to the bottom of the cylinder 5, large particles can be directly returned to the bottom of the cylinder 5, preventing them from floating on the surface of the slurry inside the cylinder 5 and then overflowing with the slurry, thus avoiding repeated processing. This ensures that the large particles settle to the bottom after return, are further crushed into smaller particles by the ball milling media, and then float to the surface for overflow. This improves the efficiency and stability of the discharge after secondary crushing of large particles, and enhances the effect and stability of large particle material return.

[0052] To improve the crushing effect of materials, the cylinder 5 is divided by a filter plate 55 to form a coarse grinding chamber 53 and a fine grinding chamber 54 that are connected and respectively connected to the feed end 52 and the discharge end 51. The coarse grinding chamber 53 is equipped with several large grinding balls, and the fine grinding chamber 54 is equipped with several large grinding balls and several small grinding balls. The return end 151 is located at the bottom of the fine grinding chamber 54. Thus, by setting up the coarse grinding chamber 53 and the fine grinding chamber 54, the material is first coarsely ground and then finely ground by different media, which can improve the grinding efficiency of the material. On this basis, returning large particles to the fine grinding chamber 54 can further improve the return effect, so that the returned large particles are crushed into smaller particles by the large and small grinding balls before being discharged. If the existing technology is used to return large particles to the coarse grinding chamber 53, the secondary discharge efficiency of the returned material will be greatly reduced, and the secondary crushing effect will be reduced.

[0053] During the operation of the ball mill, changes in the rotational speed of the cylinder 5, the grinding media inside the cylinder 5, and the material crushing progress all affect the vibration intensity of the cylinder 5, and the range of change is relatively large. However, existing vibration damping mechanisms for ball mills can generally only dampen the cylinder 5 within a fixed amplitude range. This means that the damping effect of the damping mechanism cannot change according to the changes in the vibration intensity of the cylinder 5. When the vibration intensity of the cylinder 5 changes over a large range, the damping mechanism may not be able to provide effective vibration damping support, resulting in excessive stress and damage at the rotating connection between the two ends of the cylinder 5 and the support frame.

[0054] To address the aforementioned technical problems, the ball mill also includes a vibration damping mechanism, which comprises:

[0055] The base 3 is located below the cylindrical body 5;

[0056] A plurality of vibration damping components 4 are disposed on the base 3. Each vibration damping component 4 includes rollers 41 connected vertically, vibration damping springs 42 that extend vertically, and airbags 43 that extend vertically. The plurality of airbags 43 are respectively connected to an exhaust device (not shown in the figure) and an inflation device (not shown in the figure). The rollers 41 roll against the outer wall of the cylinder 5. A follower plate 44 is provided between the plurality of vibration damping springs 42 and the plurality of airbags 43. A trigger 45 is provided on one side of the follower plate 44. A plurality of pressure boosting triggering devices 31 are provided on the base 3, located below the follower plate 44 and corresponding to the plurality of triggering devices 45. The pressure boosting triggering devices 31 are used to trigger the inflation device to inflate the corresponding airbags 43.

[0057] The above structure, through the series connection of the damping spring 42 and the air bladder 43, and the cooperation between the trigger 45 and the pressurization triggering device 31, enables the air bladder 43 to be inflated and pressurized by the corresponding inflation device when the vibration intensity of the cylinder 5 increases, causing the damping spring 42 to extend and retract to the point that the trigger 45 triggers the pressurization triggering device 31. After a certain period of time, the air bladder 43 is then vented back to its normal state through the exhaust device. This increases the support strength of the air bladder 43 when the vibration intensity of the cylinder 5 increases, preventing the damping spring 42 from over-extension and causing it to fail in its vibration damping support of the cylinder 5, or even causing the roller 41 to detach directly from the cylinder 5. This achieves the adjustable effect of increasing the vibration damping intensity of several vibration damping components 4 with the increase of vibration intensity in different parts of the cylinder 5, improving the overall vibration damping effect of the vibration damping mechanism, and thus increasing the service life of the ball mill.

[0058] The setup of coarse grinding chamber 53 and fine grinding chamber 54 further exacerbates the difference in vibration intensity between the front and rear sides of the cylinder 5. The vibration damping components 4, which correspond to the coarse grinding chamber 53 and fine grinding chamber 54 respectively, can adjust the vibration damping intensity according to the change in vibration intensity between the front and rear sides of the cylinder 5, thereby ensuring the vibration damping effect of the vibration damping mechanism while improving grinding efficiency.

[0059] To improve the efficiency of vibration damping intensity adjustment of the vibration damping component 4, the cylinder 5 extends forward and backward, and a plurality of vibration damping components 4 are arrayed below the cylinder 5. The vibration damping springs 42 and airbags 43 of the vibration damping components 4 in the same row on the left and right are connected by the same follower plate 44. The rollers 41 of the vibration damping components 4 in the same row are supported by the elastic force of the vibration damping springs 42 and airbags 43 and roll against the outer wall of the cylinder 5 and are distributed along the outer circumference of the cylinder 5. The base 3 is provided with a plurality of limiting groove plates 32 corresponding to the four corners of the follower plate 44 and used to limit and guide the lifting and lowering of the follower plate 44. The pressure triggering device 31 is a sensing sensor provided on the side wall of the limiting groove plate 32. Specifically, the sensing sensor can be a photoelectric sensor. Because the cylinder 5 extends front and back, the material inside is gradually crushed from front to back, and the grinding media inside falls after rotating around the circumference. Therefore, the vibration intensity of the cylinder 5 is similar in the circumference. Thus, the vibration damping components 4 in the same row on the left and right are connected by the same follower plate 44. Based on the fact that the vibration damping intensity of the vibration damping component 4 changes with the local vibration intensity of the cylinder 5, the inflation of the three air bags 43 is controlled by a sensor, which improves the adjustment efficiency of the vibration damping intensity of the vibration damping component 4 and saves costs. In addition, the setting of several limiting slot plates 32 guides the lifting and lowering of the follower plate 44, which improves the stability of the extension and contraction of the vibration damping spring 42 and the air bag 43 and the lifting and lowering of the follower plate 44, thereby improving the overall stability of the vibration damping mechanism.

[0060] To improve the practicality of the vibration damping mechanism, a number of bolts for bolting the lining plates inside the cylinder 5 are threaded through the circumferential array of the side wall of the cylinder 5. The number of vibration damping components 4 is set to twelve groups, with three groups on the left and right in the same row and four groups in the front and back in the same column. A number of rollers 41 are located between the bolts. The central recess of the follower plate 44 corresponds to the lower end of the vibration damping spring 42 on the middle side, and the central recess of the top of the base 3 corresponds to the lower end of the airbag 43 on the middle side. Thus, by arranging a reasonable number and position of vibration damping components 4, the cylinder 5 can achieve a stable and variable vibration damping effect. Through the central recess of the follower plate 44 and the central recess of the top of the base 3, the rollers 41 of the three groups of vibration damping components 4 in the same row can be supported by the elastic force of the same vibration damping spring 42 and airbag 43 and roll against the outer wall of the cylinder 5 and are distributed along the outer circumferential arc of the cylinder 5.

[0061] To improve the stability of the airbag 43, the side wall of the limiting groove plate 32 is also provided with a pressure stabilizing trigger device 33 located between the follower plate 44 and the pressure boosting trigger device 31 and corresponding to the trigger member 45. After the corresponding inflation device inflates and pressurizes the airbag 43, if the pressure stabilizing trigger device 33 is not triggered for a long time, it is determined that the height of the follower plate 44 is higher than the pressure stabilizing trigger device 33 for a long time, and the vibration intensity of the cylinder 5 decreases. The exhaust device is then controlled to exhaust and depressurize the airbag 43 to the normal air pressure state, thereby ensuring that the airbag 43 is depressurized in time after the vibration intensity of the cylinder 5 increases and then decreases. This avoids the situation where the airbag 43 is kept in a high pressure state, which would reduce the extension space of the damping spring 42 and cause it to roll excessively and push against the cylinder 5. At the same time, it can ensure that the normal air pressure state of the airbag 43 is sufficient to provide stable vibration damping support for the damping spring 42.

[0062] To improve the overall stability of the vibration damping assembly 4, the upper guide cylinder 441 and the lower guide cylinder 442 extend oppositely on the upper and lower sides of the follower plate 44. Each vibration damping assembly 4 also includes a lower cover 46 mounted on the base 3 and slidably fitted inside the lower guide cylinder 442, and an upper cover 47 slidably fitted inside the upper guide cylinder 441. The airbag 43 is located inside the lower cover 46 and its upper and lower ends are respectively connected to the base 3 and the follower plate 44. The vibration damping spring 42 is located inside the upper cover 47 and its upper and lower ends are respectively connected to the upper cover 47 and the follower plate 44. The roller 41 is rotatably mounted on the top of the upper cover 47. Thus, through the cooperation between the upper cover 47 and the upper guide cylinder 441, and the lower cover 46 and the lower guide cylinder 442, the stability of the vertical extension and retraction of the vibration damping spring 42 and the airbag 43 is improved, thereby enhancing the overall stability of the vibration damping assembly 4.

[0063] Specifically, the airbag 43 is an air spring, the exhaust device is an exhaust one-way valve, the bottom of the airbag 43 is provided with an inflation valve port 431 connected to the inflation device and an exhaust valve port 432 connected to the exhaust one-way valve. The inflation device and the exhaust one-way valve are both located inside the base 3. The exhaust one-way valve connects the exhaust valve port 432 to the outside and is used to exhaust air to the outside.

[0064] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ball mill for machining cemented carbide materials, characterized in that, include: The cylinder (5) is rotatably connected to the support frame at both ends and driven to rotate by the ball mill drive device. The two ends of the cylinder (5) are respectively set as the feed end (52) and the discharge end (51) and the inside is provided with ball milling media. Screening mechanism, including: The screening device (1) includes a housing (11) that is rotatably connected to the discharge end (51), a discharge channel (12), a screening channel (13), and a return channel (14) that are disposed in the housing (11) and connected in sequence. The discharge channel (12) is connected to the discharge end (51). The return channel (14) passes through the discharge end (51) to the cylinder (5) through the return pipe (15). The discharge channel (12) is provided with a discharge drive device (16) for driving the slurry overflowing from the discharge end (51) to move toward the screening channel (13). The bottom of the screening channel (13) is detachably provided with a filter element (17) for intercepting large particles. The return channel (14) is provided with a return drive device (18) for driving the large particles output from the screening channel (13) to move toward the return pipe (15). The receiving device (2) has a receiving end (21) that is connected to the lower side of the filter element (17) and is used to receive small particulate materials filtered by the filter element (17).

2. The ball mill for processing cemented carbide materials as described in claim 1, characterized in that, The screening channel (13) is U-shaped. The discharge channel (12) and return channel (14) are respectively connected to the two ends of the screening channel (13). The side wall of the housing (11) is provided with a slot corresponding to the bottom of the screening channel (13). The slot is used to detachably install the filter element (17).

3. A ball mill for processing cemented carbide materials as described in claim 2, characterized in that, The housing (11) is embedded with vibrating groove plates (111) with openings facing each other. Elastic sheets (112) are respectively provided on the upper and lower sides of the vibrating groove plates (111). The side wall of the housing (11) is provided with a plurality of vibration driving devices (19) that are connected to the two vibrating groove plates (111) by a rotating shaft (191). An eccentric wheel (192) is sleeved on the rotating shaft (191). The slot is formed between the two vibrating groove plates (111). The filter element (17) includes a frame (171) for screwing into the slot and a filter screen (172) provided in the frame (171). When the vibration driving device (19) drives the rotating shaft (191) and the eccentric wheel (192) to rotate, it drives the two vibrating groove plates (111) to vibrate, thereby driving the filter element (17) to vibrate and filter.

4. A ball mill for processing cemented carbide materials as described in claim 1, characterized in that, The discharge drive device (16) includes a discharge spiral blade (161) rotatably disposed in the discharge channel (12) and a discharge motor (162) for driving the discharge spiral blade (161) to rotate. The return drive device (18) includes a return spiral blade (181) rotatably disposed in the return channel (14) and a return motor (182) for driving the return spiral blade (181) to rotate.

5. A ball mill for machining cemented carbide materials as described in claim 1, characterized in that, The cylinder (5) is divided by a filter plate (55) to form a coarse grinding chamber (53) and a fine grinding chamber (54) that are connected and respectively connected to the feed end (52) and the discharge end (51). The coarse grinding chamber (53) is provided with a number of large grinding balls, and the fine grinding chamber (54) is provided with a number of large grinding balls and a number of small grinding balls. The return pipe (15) passes through the discharge end (51) into the cylinder (5) and then extends downward to the bottom of the fine grinding chamber (54) to form a return end (151).

6. A ball mill for machining cemented carbide materials as described in claim 1, characterized in that, It also includes a vibration damping mechanism, which comprises: The base (3) is located below the cylindrical body (5); A plurality of vibration damping components (4) are disposed on the base (3). Each vibration damping component (4) includes rollers (41) connected vertically, vibration damping springs (42) that extend vertically, and airbags (43) that extend vertically. The plurality of airbags (43) are respectively connected to an exhaust device and an inflation device. The rollers (41) roll against the outer wall of the cylinder (5). A follower plate (44) is provided between the plurality of vibration damping springs (42) and the plurality of airbags (43). A trigger element (45) is provided on one side of the follower plate (44). The base (3) is provided with several pressure-boosting triggering devices (31) located below the follower plate (44) and corresponding to several triggering elements (45). The pressure-boosting triggering devices (31) are used to trigger the inflation device to inflate the corresponding airbag (43). When the vibration intensity of the cylinder (5) increases, the vertical extension and retraction stroke of the damping spring (42) increases to the point that the triggering element (45) triggers the pressure-boosting triggering device (31), the corresponding inflation device inflates and pressurizes the airbag (43).

7. A ball mill for machining cemented carbide materials as described in claim 6, characterized in that, The cylinder (5) extends forward and backward, and a plurality of vibration damping components (4) are arrayed below the cylinder (5). The vibration damping springs (42) and airbags (43) of the vibration damping components (4) in the same row on the left and right are connected by the same follower plate (44). The rollers (41) of the vibration damping components (4) in the same row are supported by the elastic force of the vibration damping springs (42) and airbags (43) and roll against the outer wall of the cylinder (5) and are distributed along the outer circumference of the cylinder (5). The base (3) is provided with a plurality of limiting grooves (32) corresponding to the four corners of the follower plate (44) and used to limit and guide the lifting and lowering of the follower plate (44). The pressure triggering device (31) is a sensing sensor provided on the side wall of the limiting groove (32).

8. A ball mill for machining cemented carbide materials as described in claim 7, characterized in that, The side wall of the limiting groove plate (32) is also provided with a voltage stabilizing triggering device (33) located between the follower plate (44) and the pressure boosting triggering device (31) and corresponding to the triggering element (45).

9. A ball mill for machining cemented carbide materials as described in claim 6, characterized in that, The upper and lower sides of the follower plate (44) are provided with an upper guide cylinder (441) and a lower guide cylinder (442) extending in opposite directions. Each vibration damping component (4) also includes a lower cover (46) disposed on the base (3) and slidably sleeved in the lower guide cylinder (442), and an upper cover (47) slidably sleeved in the upper guide cylinder (441). The airbag (43) is disposed in the lower cover (46) and its upper and lower ends are respectively connected to the base (3) and the follower plate (44). The vibration damping spring (42) is disposed in the upper cover (47) and its upper and lower ends are respectively connected to the upper cover (47) and the follower plate (44). The roller (41) is rotatably disposed on the top of the upper cover (47).

10. A ball mill for machining cemented carbide materials as described in claim 6, characterized in that, The airbag (43) is an air spring, the exhaust device is an exhaust valve, the bottom of the airbag (43) is provided with an inflation valve port (431) connected to the inflation device and an exhaust valve port (432) connected to the exhaust valve, and the inflation device and the exhaust valve are both located in the base (3).

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