Three-dimensional wet grinding machine and method based on metal powder processing

Abstract

The invention discloses a three-dimensional wet grinding machine and method based on metal powder machining, and relates to the technical field of wet grinding machines, the three-dimensional wet grinding machine comprises a rack, a wet grinding tank is arranged at the top of the rack, two material ports are formed in the outer side of the wet grinding tank, the two connecting frames are both fixedly connected to the outer side of the wet grinding tank, and the two material ports are arranged in the wet grinding tank. The two connecting frames are rotationally connected with the rack, and a transmission device used for driving the connecting frames to rotate is arranged in the rack. After wet grinding is completed, powder slurry is discharged, then the traction piece drives the driving mechanism to ascend, a medium is forced to continuously penetrate through the driving mechanism, abraded grinding balls in the medium are discharged in batches through the screening piece, the abraded grinding balls in the wet grinding tank can be automatically screened out, and it is avoided that a large number of grinding balls need to be discharged; and after discharging, screening treatment is carried out, and the discharged materials are supplemented.

Description

Technical Field

[0001] This invention relates to the field of wet grinding technology, and in particular to a three-dimensional wet grinding mill and method based on metal powder processing. Background Technology

[0002] In the field of metal powder processing, three-dimensional wet grinding is a key powder production technology. It achieves fine grinding and uniform mixing of powder through the joint movement of grinding media (such as grinding balls), materials, and solvents.

[0003] A wet grinding mill disclosed in patent application CN120054709A includes a cylindrical assembly rotatably mounted on a support. A grinding media mechanism is rotatably connected to the support. Rotating a handwheel causes a screw to rotate, simultaneously rotating a dial fixedly connected to the screw. The screw thread engages, causing a nut to move downwards. The angle of rotation of the dial indicates the distance the nut has moved downwards. This downward movement of the nut moves a curved grinding surface downwards, thereby adjusting the distance between the mill body and the material to be ground. This method allows adjustment of the nut's downward movement distance according to the desired particle size. The rotation of the curved grinding surface ensures uniform material distribution, preventing over- or under-grinding and improving product quality. Furthermore, the grinding parameters can be precisely controlled through the dial and screw, ensuring uniform particle size distribution in the product.

[0004] The following problems exist during use: After prolonged operation, the grinding media will wear and break down, resulting in a reduction in size and affecting the grinding effect. In the existing technology, screening the abrasive media usually requires discharging all the media in the tank along with the slurry or residual powder after wet grinding, and then separating them through external screening equipment. This process is not only time-consuming and labor-intensive, causing production interruptions, but also makes it difficult to achieve online identification and real-time separation of the abrasive media, which seriously affects the overall operating efficiency and equipment utilization rate.

[0005] Therefore, it is necessary to provide a three-dimensional wet grinding mill and method based on metal powder processing to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a three-dimensional wet grinding mill and method based on metal powder processing, so as to solve the problems of the prior art mentioned in the background.

[0007] Based on the above ideas, the present invention provides the following technical solution: a three-dimensional wet grinding mill based on metal powder processing, comprising a frame, a wet grinding tank disposed on the top of the frame, two material inlets disposed on the outer side of the wet grinding tank, and further comprising: Two connecting frames are fixedly connected to the outside of the wet grinding tank, and both connecting frames are rotatably connected to the frame. The frame is equipped with a transmission device for driving the connecting frames to rotate. The transmission cylinder passes through the wet grinding tank and is rotatably connected to the wet grinding tank. An inflatable air bladder is sleeved on the outside of the transmission cylinder. The wet grinding tank is equipped with multiple screening components, which are arranged in a ring around the transmission cylinder for screening the worn grinding balls. A drive mechanism is disposed between multiple fixed cylinders. A traction member is disposed on the outside of the drive mechanism. When the traction member drives the drive mechanism to rise along the fixed cylinders, the medium flows to perform screening.

[0008] As a further embodiment of the present invention: two fixed disks are fixedly connected to the outside of the transmission cylinder, and a second through hole for venting and a first through hole for evacuating are opened on the outside of the transmission cylinder. The two ends of the inflatable airbag are fixedly connected to the fixed disks respectively. The outer side of the transmission cylinder near the second through hole is connected to an external air supply pipe for inflating the inflatable airbag. The other end of the transmission cylinder is connected to an external air extraction pipe for contracting the inflatable airbag.

[0009] As a further embodiment of the present invention: the screening component includes a fixed cylinder, which is fixed inside the wet grinding tank and has one end penetrating through the wet grinding tank. An exposed groove is provided on the outside of the fixed cylinder, and a screening cylinder is provided inside the fixed cylinder. Multiple sets of screening holes are provided on the outside of the screening cylinder for screening media of different sizes.

[0010] As a further aspect of the present invention: multiple screening cylinders are fixedly connected to the top of a support rod, the support rod passes through the exposed groove and the wet grinding tank in sequence and is rotatably connected to the exposed groove and the wet grinding tank, and a first gear is fixedly connected to the outside of each of the multiple support rods, and a gear ring is rotatably connected to the outside of the wet grinding tank, and the gear ring meshes with multiple first gears.

[0011] As a further embodiment of the present invention: the driving mechanism includes a sliding disk, which is sleeved on the outside of multiple fixed cylinders and slidably connected to the multiple fixed cylinders. An inclined disk is fixedly connected to the top of the sliding disk, and the top of the inclined disk is set as an inclined surface. A fixed ring is fixedly connected to the inner side of the inclined disk, and multiple through grooves are opened on the top of the fixed ring. When the inflatable airbag is fully inflated, it fits against the inner side of the fixed ring.

[0012] As a further embodiment of the present invention: the driving mechanism further includes multiple baffles, which are fixedly connected to the bottom of the sliding disk, and the multiple baffles are respectively attached to the outer side of the adjacent fixed cylinder. An inner retaining ring is fixedly connected to the bottom of the fixed ring, and a spiral plate is rotatably connected between the inner retaining ring and the baffle. Multiple filter holes are opened on the outer side of the inner retaining ring.

[0013] As a further aspect of the present invention: the traction component includes a plurality of first winding devices, each of which is disposed at one end of the wet grinding tank, and a first traction wire is disposed on the outside of the first winding device, the first traction wire being fixedly connected to the top of the inclined plate; a second winding device is disposed on the outside of the other end of the wet grinding tank, a second traction wire is disposed on the outside of the second winding device, and the second traction wire is fixedly connected to the bottom of the sliding plate.

[0014] As a further embodiment of the present invention: a second gear is fixedly connected to the outside of the transmission cylinder, a third gear is meshed with the outside of the second gear, the third gear is rotatably connected to the wet grinding jar, a rotary motor is fixedly connected to the outside of the wet grinding jar, the output shaft of the rotary motor is fixedly connected to the third gear, a transmission disc is fixedly connected to the outside of the transmission cylinder, the transmission disc is disposed inside the wet grinding jar, and multiple telescopic rods are fixedly connected between the transmission disc and the spiral plate.

[0015] As a further aspect of the present invention: a connecting frame is provided on the outside of the wet grinding tank, the connecting frame is fixedly connected to multiple fixed cylinders, and a negative pressure pipe and an air blowing pipe are fixedly connected to the outside of the connecting frame respectively.

[0016] A method based on metal powder processing includes the following steps: Step 1: When the grinding balls, powder and alcohol are introduced into the wet grinding jar, and the feed inlet is closed, the connecting frame is rotated by starting the transmission device, so that the wet grinding jar is tilted and rotated. Step 2: During the rotation of the wet grinding tank, the expansion of the expandable air bladder can be controlled to adjust the wet grinding space between the internal medium and the slurry. Step 3: After wet grinding is completed, the slurry is discharged, and then the drive mechanism is lifted by the traction component, forcing the medium to continuously pass through the drive mechanism, and the worn grinding balls in the medium are discharged in batches by the screening component.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. After wet grinding is completed, the slurry is discharged, and then the drive mechanism is driven to rise by the traction component. The medium is forced to continuously pass through the drive mechanism, and the worn grinding balls in the medium are discharged in batches by the screening component. The worn grinding balls inside the wet grinding tank can be automatically screened out, avoiding the need to discharge a large number of grinding balls inside. After discharge, screening is performed to replenish the discharged balls.

[0018] 2. During the wet grinding process, by controlling the expansion and change of the expandable air bladder, the internal space of the wet grinding tank is changed. Through the synergistic effect of the tilting and rotation of the wet grinding tank and the expandable air bladder, the internal grinding space can be dynamically adjusted, and the flow state and collision frequency of the powder slurry and grinding media can be optimized, thereby significantly improving the efficiency and uniformity of wet grinding.

[0019] 3. When it is necessary to discharge all the grinding balls in the tank according to size, the screening cylinder can be rotated to align the screening holes of different diameters with the exposed grooves in sequence, so as to screen the grinding balls of different sizes from small to large, realizing the automatic grading and discharge in the machine, further eliminating the need for manual subsequent screening operations.

[0020] 4. The grinding balls roll along the inclined surface of the inclined plate and enter the spiral channel formed by the inclined plate, inner retaining ring, and spiral plate through the through groove at the top of the fixed ring. As the grinding balls roll down the spiral plate, they continuously pass through the screening cylinders inside multiple fixed cylinders. The grinding balls that have become smaller due to wear can be screened through the corresponding screening holes and discharged into the fixed cylinder; while the grinding balls that have not passed the screening and are still larger in size eventually fall into the area below the sliding plate, thus realizing the automatic spatial separation of screened and unscreened grinding balls, effectively avoiding repeated screening and improving work efficiency. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connecting frame structure of the present invention; Figure 3 This is a schematic cross-sectional view of the wet grinding jar of the present invention; Figure 4 This is a schematic diagram of the inflatable airbag structure of the present invention; Figure 5 This is a schematic diagram of the transmission cylinder structure of the present invention; Figure 6 This is the present invention. Figure 4 Structural diagram; Figure 7 This is a schematic diagram of the sliding disk structure of the present invention; Figure 8 This is a schematic diagram of the traction component structure of the present invention; Figure 9 This is a schematic diagram of the drive mechanism structure of the present invention; Figure 10 This is a schematic diagram of the tilting disk and inner retaining ring structure of the present invention; Figure 11 This is a schematic diagram of the fixing ring structure of the present invention; Figure 12 This is a schematic diagram of the screening component structure of the present invention.

[0023] In the diagram: 1. Frame; 2. Connecting frame; 3. Wet grinding jar; 301. Feed inlet; 4. Fixed cylinder; 401. Exposed groove; 402. Screening cylinder; 4021. Screening hole; 4022. First gear; 403. Gear ring; 5. Sliding disc; 501. Inclined disc; 502. Fixed ring; 503. Inner retaining ring; 504. Baffle; 505. Spiral plate; 6. Transmission cylinder; 601. First through hole; 602. Second through hole; 603. Fixed disc; 604. Second gear; 605. Third gear; 606. Rotary motor; 607. Transmission disc; 608. Telescopic rod; 7. Inflatable airbag; 701. First winding device; 702. Second winding device; 8. Connecting frame. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0026] like Figures 1 to 12 As shown, a three-dimensional wet grinding mill and method based on metal powder processing includes the following embodiments: Example 1: Includes a frame 1, a wet grinding jar 3 is provided on the top of the frame 1, and two feed inlets 301 are provided on the outside of the wet grinding jar 3, and also includes: Two connecting frames 2 are fixedly connected to the outside of the wet grinding tank 3, and both connecting frames 2 are rotatably connected to the frame 1. The frame 1 is equipped with a transmission device for driving the connecting frames 2 to rotate. The transmission device uses a gear rack and pinion and a servo motor in cooperation. This is the prior art.

[0027] The transmission cylinder 6 passes through the wet grinding tank 3 and is rotatably connected to the wet grinding tank 3. An inflatable air bladder 7 is sleeved on the outside of the transmission cylinder 6. Multiple screening components are arranged inside the wet grinding tank 3 in a ring around the transmission cylinder 6 for screening the worn grinding balls. The drive mechanism is located between multiple fixed cylinders 4. A traction component is provided on the outside of the drive mechanism. When the traction component drives the drive mechanism to rise along the fixed cylinder 4, the medium flows to perform screening.

[0028] In practice, when wet grinding of metal powder is required, after preparing the appropriate ratio of medium and alcohol, the medium can be zirconium oxide, etc., to wet grind the powder. Grinding balls, powder, and alcohol are introduced into the wet grinding tank 3, and then the feed port 301 is closed. At this time, the transmission device is activated to drive the connecting frame 2 to rotate, causing the wet grinding tank 3 to tilt and rotate. During the rotation of the wet grinding tank 3, the expandable air bladder 7 can be controlled to expand, adjusting the wet grinding space between the internal medium and the powder slurry. After wet grinding is completed, the powder slurry is discharged, and then the traction component drives the drive mechanism to rise, forcing the medium to continuously pass through the drive machine. The structure allows worn grinding balls in the grinding media to be discharged in batches through a screening component. This automatically screens out worn grinding balls inside the wet grinding tank 3, avoiding the need to discharge a large number of grinding balls, screen them after discharge, and then discharge them again for replenishment. This design completely avoids the cumbersome procedures of stopping, emptying, offline screening, and refilling in the traditional process, greatly reducing downtime and manual intervention. It realizes online maintenance and renewal of the grinding media, effectively ensuring the stability of the grinding effect between batches, thereby significantly improving overall production continuity and work efficiency. Meanwhile, during the wet grinding process, by controlling the expansion and change of the expandable airbag 7, the internal space size of the wet grinding tank 3 is changed. Through the synergistic effect of the tilting and rotation of the wet grinding tank 3 and the expandable airbag 7, the internal grinding space can be dynamically adjusted, and the flow state and collision frequency of the powder slurry and grinding media such as zirconia beads can be optimized, thereby significantly improving the efficiency and uniformity of wet grinding.

[0029] In this embodiment, two fixed disks 603 are fixedly connected to the outside of the transmission cylinder 6, and a second through hole 602 for venting and a first through hole 601 for evacuating are provided on the outside of the transmission cylinder 6. The two ends of the inflatable airbag 7 are fixedly connected to the fixed disks 603 respectively. The outer side of the end of the transmission cylinder 6 near the second through hole 602 is connected to an external air supply pipe for inflating the inflatable airbag 7. The other end of the transmission cylinder 6 is connected to an external air extraction pipe for contracting the inflatable airbag 7.

[0030] In practice, during the wet grinding of the slurry, air is supplied to the inside of the transmission cylinder 6 through an external air supply pipe and discharged through the second through hole 602. A control valve is installed on the outside of the other end of the transmission cylinder 6 to close it. At this time, the expandable air bag 7 expands, thereby squeezing the slurry inside and compressing the space inside the wet grinding tank 3, enhancing the grinding effect between the slurry and the grinding balls. Furthermore, the expandable air bag 7 can be contracted through the air extraction pipe at the other end of the transmission cylinder 6, thereby flexibly adjusting the volume change of the air bag 7 and dynamically changing the contact state and spatial distribution of the slurry and grinding media inside the wet grinding tank 3.

[0031] Example 2: The screening component includes a fixed cylinder 4, which is fixed inside the wet grinding tank 3 and has one end penetrating through the wet grinding tank 3. An exposed groove 401 is provided on the outside of the fixed cylinder 4, and a screening cylinder 402 is provided inside the fixed cylinder 4. Multiple screening holes 4021 are provided on the outside of the screening cylinder 402 for screening media of different sizes.

[0032] Multiple screening cylinders 402 are fixedly connected to the top of support rods, which pass through the exposed groove 401 and the wet grinding tank 3 in sequence and are rotatably connected to the exposed groove 401 and the wet grinding tank 3. Multiple support rods are fixedly connected to the outside of the support rods. A gear ring 403 is rotatably connected to the outside of the wet grinding tank 3, and the gear ring 403 is meshed with multiple first gears 4022.

[0033] A connecting frame 8 is provided on the outside of the wet grinding tank 3. The connecting frame 8 is fixedly connected to multiple fixed cylinders 4. A negative pressure pipe and an air blowing pipe are fixedly connected to the outside of the connecting frame 8 respectively.

[0034] In practice, when the slurry in the wet grinding tank 3 is discharged and the worn grinding balls need to be screened out, the drive motor located at the end of the wet grinding tank 3 can be started. Its output shaft drives the gear ring 403 to rotate through the transmission gear. The gear ring 403 drives each of the first gears 4022 meshing with it to rotate, which in turn drives each screening cylinder 402 to rotate through the support rod. This causes multiple sets of screening holes 4021 on the side wall of the screening cylinder 402 to be aligned with the exposure grooves 401 on the side wall of the fixed cylinder 4 and exposed. By setting the diameter of one set of screening holes 4021 to be smaller than the diameter of the minimum grinding ball initially put in, only the worn grinding balls can pass through, while other intact grinding balls are blocked. At the same time, the adsorption force generated by the connecting frame 8 connected to the bottom of multiple fixed cylinders 4 and the negative pressure pipe connected to it can actively suck the grinding balls toward the sieve hole 4021, ensuring that the worn balls can smoothly enter the sieve hole 4021 and be discharged, thus avoiding the tedious process of manually sieving each grinding ball after pouring it out in the traditional method.

[0035] In addition, when it is necessary to discharge all the grinding balls in the tank according to size, the screening cylinder 402 can be rotated so that the screening holes 4021 of different diameters are aligned with the exposed grooves 401 in sequence, thereby screening the grinding balls of different sizes from small to large, realizing the automatic completion of grading and discharge in the machine, and further eliminating the need for manual subsequent screening operations.

[0036] Example 3: The driving mechanism includes a sliding disk 5, which is sleeved on the outside of multiple fixed cylinders 4 and slidably connected to the multiple fixed cylinders 4. An inclined disk 501 is fixedly connected to the top of the sliding disk 5. The top of the inclined disk 501 is set as an inclined surface. A fixed ring 502 is fixedly connected to the inner side of the inclined disk 501. Multiple through grooves are opened on the top of the fixed ring 502. When the inflatable airbag 7 is fully inflated, it fits against the inner side of the fixed ring 502.

[0037] The drive mechanism also includes multiple baffles 504, which are fixedly connected to the bottom of the sliding disk 5 and respectively attached to the outer side of the adjacent fixed cylinder 4. An inner retaining ring 503 is fixedly connected to the bottom of the fixed ring 502. A spiral plate 505 is rotatably connected between the inner retaining ring 503 and the baffles 504. Multiple filter holes are opened on the outer side of the inner retaining ring 503.

[0038] The traction component includes multiple first winding devices 701, each of which is located at one end of the wet grinding tank 3. A first traction wire is provided on the outside of each first winding device 701, and the first traction wire is fixedly connected to the top of the inclined plate 501. A second winding device 702 is provided on the outside of the other end of the wet grinding tank 3, and a second traction wire is provided on the outside of the second winding device 702, and the second traction wire is fixedly connected to the bottom of the sliding plate 5.

[0039] In practical implementation, to address the potential issues of grinding ball accumulation and difficulty in distinguishing between treated and untreated balls during the screening process, this solution further optimizes the operation flow: First, the rotation of the wet grinding tank 3 gathers the grinding balls to the end of the tank away from the drive mechanism. Then, using traction components such as the first winding device 701 and the second winding device 702, the sliding disc 5 is pulled towards this end of the wet grinding tank 3, and the inflatable air bladder 7 expands, thereby compressing and confining a large number of grinding balls to an area near the inner wall of the wet grinding tank 3 and above the inclined disc 501. At this time, the wet grinding tank 3 continues to rotate, evenly distributing the grinding balls on the inclined surface of the inclined disc 501. Next, the first winding device 701 winds up the traction wire. Pulling the sliding disk 5 and the inclined disk 501 upwards along the fixed cylinder 4, the grinding balls roll along the inclined surface of the inclined disk 501 and enter the spiral channel formed by the inclined disk 501, the inner retaining ring 503 and the spiral plate 505 through the through groove at the top of the fixed ring 502. As the grinding balls roll down along the spiral plate 505, they continuously pass through the screening cylinders 402 inside multiple fixed cylinders 4. The grinding balls that have been worn down and become smaller can be screened into the fixed cylinder 4 and discharged through the corresponding screening holes 4021; while the grinding balls that have not been screened and are still larger in size eventually fall into the area below the sliding disk 5, thereby realizing the automatic spatial separation of screened and unscreened grinding balls, effectively avoiding repeated screening and improving work efficiency.

[0040] Furthermore, to address the potential for a large amount of powder to adhere to the surface of the grinding balls, this solution also includes a cleaning function: when the grinding balls roll within the spiral plate 505 channel, the connecting pipe of the connecting frame 8 can be switched to stop the negative pressure adsorption, and instead, air is blown into the sieve hole 4021 through the external air blowing pipe. The airflow is ejected from the sieve hole 4021, sweeping the surface of the passing grinding balls; simultaneously, the filter holes on the outer side of the inner baffle ring 503 allow the blown-off fine powder to pass through and be discharged, thereby achieving effective separation and cleaning of the powder adhering to the surface of the grinding balls.

[0041] In this embodiment: a second gear 604 is fixedly connected to the outside of the transmission cylinder 6, a third gear 605 is meshed with the outside of the second gear 604, the third gear 605 is rotatably connected to the wet grinding jar 3, a rotary motor 606 is fixedly connected to the outside of the wet grinding jar 3, the output shaft of the rotary motor 606 is fixedly connected to the third gear 605, a transmission disc 607 is fixedly connected to the outside of the transmission cylinder 6, the transmission disc 607 is disposed inside the wet grinding jar 3, and multiple telescopic rods 608 are fixedly connected between the transmission disc 607 and the spiral plate 505.

[0042] In practical implementation, this solution further enhances the automation and efficiency of the screening and wet grinding processes. During the screening stage, a rotary motor 606 can be activated to drive the third gear 605 to rotate, which in turn drives the meshing second gear 604 and the transmission cylinder 6 to rotate. The transmission cylinder 6 drives the transmission disc 607 on its outer side to rotate synchronously. The transmission disc 607, through multiple telescopic rods 608, drives the spiral plate 505 to rotate within the annular space formed by the baffle 504 and the inner retaining ring 503. The rotation of the spiral plate 505 generates a auger-like propulsive effect, actively guiding and improving the efficiency of the grinding balls passing through the sliding disc 5 area, effectively preventing the grinding balls from accumulating and clogging in the screening path.

[0043] Meanwhile, during the wet grinding process of the wet grinding tank 3, the aforementioned telescopic rod 608 can also be extended and retracted according to the position change of the sliding disc 5. When the sliding disc 5 rises under the action of the traction component, the telescopic rod 608 can extend accordingly, so as to actively agitate the slurry inside the wet grinding tank 3, thereby breaking up any possible slurry agglomerates, ensuring uniform mixing of the wet grinding media and the slurry, and further improving the consistency of the wet grinding effect.

[0044] It is worth noting that the surface of the spiral plate 505 can also be provided with protrusions, which can enhance the pushing effect on the grinding balls.

[0045] A method based on metal powder processing includes the following steps: Step 1: When grinding balls, powder and alcohol are introduced into the wet grinding jar 3, and the feed port 301 is closed, the connecting frame 2 is rotated by starting the transmission device, so that the wet grinding jar 3 is tilted and rotated. Step 2: During the rotation of the wet grinding tank 3, the expansion of the expandable air bladder 7 can be controlled to adjust the wet grinding space between the internal medium and the slurry. Step 3: After wet grinding is completed, the slurry is discharged, and then the drive mechanism is lifted by the traction component, forcing the medium to continuously pass through the drive mechanism, and the worn grinding balls in the medium are discharged in batches by the screening component.

[0046] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A three-dimensional wet grinding mill based on metal powder processing, comprising a frame (1), a wet grinding jar (3) disposed on the top of the frame (1), and two feed inlets (301) disposed on the outer side of the wet grinding jar (3), characterized in that, Also includes: Two connecting frames (2) are fixedly connected to the outside of the wet grinding tank (3), and both connecting frames (2) are rotatably connected to the frame (1). The frame (1) is equipped with a transmission device for driving the connecting frames (2) to rotate. The transmission cylinder (6) passes through the wet grinding tank (3) and is rotatably connected to the wet grinding tank (3). An inflatable air bag (7) is sleeved on the outside of the transmission cylinder (6). The wet grinding tank (3) is provided with multiple screening components inside. The multiple screening components are arranged in a ring around the transmission cylinder (6) for screening the worn grinding balls. The drive mechanism is located between multiple fixed cylinders (4). A traction member is provided on the outside of the drive mechanism. When the traction member drives the drive mechanism to rise along the fixed cylinder (4), the medium flows to perform screening.

2. The three-dimensional wet grinding mill based on metal powder processing according to claim 1, characterized in that: Two fixed disks (603) are fixedly connected to the outside of the transmission cylinder (6), and a second through hole (602) for venting and a first through hole (601) for evacuating are provided on the outside of the transmission cylinder (6). The two ends of the inflatable airbag (7) are fixedly connected to the fixed disks (603) respectively. The outer side of one end of the transmission cylinder (6) near the second through hole (602) is connected to an external air supply pipe for inflating the inflatable airbag (7). The other end of the transmission cylinder (6) is connected to an external air extraction pipe for contracting the inflatable airbag (7).

3. The three-dimensional wet grinding mill based on metal powder processing according to claim 1, characterized in that: The screening component includes a fixed cylinder (4), which is fixed inside the wet grinding tank (3) and has one end penetrating through the wet grinding tank (3). An exposed groove (401) is provided on the outside of the fixed cylinder (4), and a screening cylinder (402) is provided inside the fixed cylinder (4). Multiple screening holes (4021) are provided on the outside of the screening cylinder (402) for screening media of different sizes.

4. A three-dimensional wet grinding mill based on metal powder processing according to claim 3, characterized in that: Multiple screening cylinders (402) are fixedly connected to the top of the support rods, which pass through the exposed groove (401) and the wet grinding tank (3) in sequence and are rotatably connected to the exposed groove (401) and the wet grinding tank (3). Multiple support rods are fixedly connected to the outside of the first gear (4022), and the outside of the wet grinding tank (3) is rotatably connected to the gear ring (403), and the gear ring (403) meshes with multiple first gears (4022).

5. A three-dimensional wet grinding mill based on metal powder processing according to claim 3, characterized in that: The driving mechanism includes a sliding disk (5), which is sleeved on the outside of multiple fixed cylinders (4) and slidably connected to the multiple fixed cylinders (4). An inclined disk (501) is fixedly connected to the top of the sliding disk (5). The top of the inclined disk (501) is set as an inclined surface. A fixed ring (502) is fixedly connected to the inner side of the inclined disk (501). Multiple through grooves are opened on the top of the fixed ring (502). When the inflatable airbag (7) is fully inflated, it fits against the inner side of the fixed ring (502).

6. A three-dimensional wet grinding mill based on metal powder processing according to claim 5, characterized in that: The driving mechanism also includes multiple baffles (504), which are fixedly connected to the bottom of the sliding disk (5), and the multiple baffles (504) are respectively attached to the outer side of the adjacent fixed cylinder (4). The bottom of the fixed ring (502) is fixedly connected to an inner retaining ring (503), and a spiral plate (505) is rotatably connected between the inner retaining ring (503) and the baffle (504). Multiple filter holes are opened on the outer side of the inner retaining ring (503).

7. A three-dimensional wet grinding mill based on metal powder processing according to claim 6, characterized in that: The traction component includes multiple first winding devices (701), each of which is located at one end of the wet grinding tank (3). A first traction wire is provided on the outside of the first winding device (701), and the first traction wire is fixedly connected to the top of the inclined plate (501). A second winding device (702) is provided on the outside of the other end of the wet grinding tank (3), and a second traction wire is provided on the outside of the second winding device (702), and the second traction wire is fixedly connected to the bottom of the sliding plate (5).

8. A three-dimensional wet grinding mill based on metal powder processing according to claim 2, characterized in that: A second gear (604) is fixedly connected to the outside of the transmission cylinder (6), and a third gear (605) is meshed with the outside of the second gear (604). The third gear (605) is rotatably connected to the wet grinding jar (3). A rotary motor (606) is fixedly connected to the outside of the wet grinding jar (3). The output shaft of the rotary motor (606) is fixedly connected to the third gear (605). A transmission disc (607) is fixedly connected to the outside of the transmission cylinder (6). The transmission disc (607) is located inside the wet grinding jar (3), and multiple telescopic rods (608) are fixedly connected between the transmission disc (607) and the spiral plate (505).

9. A three-dimensional wet grinding mill based on metal powder processing according to claim 1, characterized in that: The wet grinding tank (3) is provided with a connecting frame (8) on the outside. The connecting frame (8) is fixedly connected to multiple fixed cylinders (4). The outside of the connecting frame (8) is fixedly connected to a negative pressure pipe and an air blowing pipe.

10. A method for metal powder processing, employing a three-dimensional wet grinding mill for metal powder processing as described in any one of claims 1 to 9, characterized in that: Includes the following steps: Step 1: When grinding balls, powder and alcohol are introduced into the wet grinding jar (3), and the feed port (301) is closed, the connecting frame (2) is rotated by starting the transmission device, so that the wet grinding jar (3) is tilted and rotated. Step 2: During the rotation of the wet grinding tank (3), the expansion of the expandable air bladder (7) is controlled to adjust the wet grinding space between the internal medium and the slurry; Step 3: After wet grinding is completed, the slurry is discharged, and then the drive mechanism is lifted by the traction component, forcing the medium to continuously pass through the drive mechanism, and the worn grinding balls in the medium are discharged in batches by the screening component.

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