Metal powder dewatering device

Abstract

The application relates to the technical field of metal powder processing dehydration, and discloses a metal powder dehydration device which comprises a rack and further comprises a dehydration tank rotatably arranged at the top of the rack, wherein the dehydration tank is concentrically connected with a rotating shaft, a first extrusion plate and a second extrusion plate are cross-rotatably arranged on the rotating shaft, liquid inlet pipes are arranged on the two sides of the center of the dehydration tank, and a supporting plate for placing fluid metal powder and a discharge port for discharging the extruded blocky metal powder are symmetrically arranged on the rack at the position of the dehydration tank, filter holes are arranged on the supporting plate, the problems of poor dehydration and extrusion effect and inconsistent dehydration and drying process in the prior art are solved, the system process is realized, and the drying efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of metal powder processing and dehydration technology, and in particular to a metal powder dehydration device. Background Technology

[0002] In the metal powder preparation process, a fluid of metal powder and water is first obtained through grinding. Then, the metal powder fluid is dehydrated. The dehydration process first involves extruding and dehydrating the fluid to form clumps of powder with a certain hardness. Then, the powder is placed in a drying device to dry completely and remove water.

[0003] However, during the implementation of the relevant technical solutions, at least the following technical problems were found: First, when the existing extrusion device is used for extrusion dehydration, the large mass of the metal powder fluid makes it easy to cause incomplete dehydration, resulting in a large amount of residual moisture inside the extruded block powder, which affects the efficiency of subsequent drying and prolongs the drying time. Second, after the fluid powder is dehydrated into block metal powder and then placed separately into the drying container, hot air is blown into it for drying. This process will cause the overall drying process to be interrupted, thus affecting the overall drying efficiency. Summary of the Invention

[0004] This application provides a metal powder dehydration device, which solves the problems of poor dehydration and extrusion effect and discontinuous dehydration and drying processes that affect drying efficiency in the prior art. It realizes the systematic and process-oriented processing of metal powder and improves drying efficiency.

[0005] This application provides a metal powder dehydration apparatus, including a frame, and further comprising: A dehydration tank is rotatably mounted on the top of the frame, and a rotating shaft is concentrically connected to the dehydration tank. A first extrusion plate and a second extrusion plate are rotatably mounted on the rotating shaft. Liquid inlet pipes are respectively opened on both sides of the dehydration tank connecting the center. The frame is symmetrically arranged at the position of the dehydration tank with a receiving plate for placing fluid metal powder and a feeding port for feeding the extruded block metal powder. Filter holes are opened on the receiving plate. A synchronous extrusion component is located between the first extrusion plate, the second extrusion plate and the dehydration tank, and is used to synchronously drive the first extrusion plate and the second extrusion plate to rotate relative to / opposite to extrude / release fluid metal powder; The feeding rotating component is located between the dehydration tank and the frame. It is used to rotate the dehydration tank to coincide with the feeding port so as to feed the extruded block metal powder. The drying unit is located at the bottom of the frame and directly below the feed inlet, and is used to dry block metal powder.

[0006] Furthermore, the synchronous extrusion member includes: An arc-shaped track is located at the top of the dehydration tank; A movable block is fixedly connected to one end of the first extrusion plate and the second extrusion plate, and the movable block is adapted to the arc-shaped track to control the movement of the first extrusion plate and the second extrusion plate. The first telescopic component is movably disposed between the dehydration tank and the first and second extrusion plates, respectively, and is used to drive the moving block to run along an arc-shaped track.

[0007] Furthermore, a second telescopic member is fixedly connected to the top of the frame, and a connecting frame is fixedly connected to the telescopic end of the second telescopic member, and a third extrusion block is fixedly connected to both ends of the connecting frame.

[0008] Furthermore, the feeding rotating component includes: A drive gear, wherein the drive gear is mounted on a receiving plate and is driven by a first power device; A gear ring is fixedly connected to the outer wall of the dehydration tank, and the drive gear meshes with the gear ring to drive the dehydration tank to rotate by an angle so that the block metal powder falls from the feed port.

[0009] Furthermore, a wastewater collection tank is integrally formed at the bottom of the receiving plate, and guide plates are provided on both sides of the wastewater collection tank. The two sets of guide plates have an angle, and the wastewater converges at the angle to form an outlet.

[0010] Furthermore, the drying unit includes: A drying assembly, located at the bottom of the frame, is used to crush and dry block metal powder, and the top of the drying assembly is provided with an opening assembly; The pre-crushing trigger, located on the frame and directly below the feed inlet, is used to subdivide the bulk metal powder while simultaneously opening the opening assembly.

[0011] Furthermore, the pre-break trigger includes: The material discharge channel is located directly below the material discharge port and is composed of a surrounding panel and a wastewater collection tank. The first cutting blade is located in the feeding channel, and a second cutting blade is provided on one side of the first cutting blade; An mounting plate is provided on the enclosure, and an elastic element is provided between the mounting plate and the second cutting blade, and a pressure sensor is installed on the mounting plate.

[0012] Further, the drying assembly includes: A drying chamber, which is located at the bottom of the feeding channel and is fixedly connected to the frame; The refining rollers are symmetrically and rotatably connected inside the drying chamber, and the refining rollers are driven by a linkage. The drying roller is rotatably installed inside the drying chamber and located between two sets of refining rollers, forming a crushing and feeding channel with the refining rollers. The outer wall of the drying roller has multiple sets of drying holes for blowing air onto the metal powder, and one end of the drying roller has an air inlet pipe connected to the drying component.

[0013] Furthermore, a first guide plate is provided between the refining roller and the drying roller, and the first guide plate has a feeding hole. A second guide plate is fixedly connected to the end of the drying box away from the refining roller. A storage space is formed between the first guide plate and the second guide plate, and the distance between the second guide plate and the drying roller is greater than the distance between the first guide plate and the drying roller.

[0014] Furthermore, the opening assembly includes: An opening plate is symmetrically rotated and located on the top of the drying oven. An opening is provided at the bottom of the drying oven, and the opening plate overlaps with the opening and is located at the bottom of the opening. The outer wall of the opening plate is provided with toothed grooves. The drive wheel is located on one side of the opening plate and is driven by a second power device.

[0015] The technical solution provided in this application has at least the following technical effects or advantages: Because this application uses a dehydration tank, the first and second extrusion plates can simultaneously perform transverse extrusion on the fluid metal powder within the dehydration tank. After the transverse extrusion is completed, the third extrusion block performs longitudinal extrusion, thereby achieving thorough extrusion of the fluid metal powder. After extrusion, the toothed ring rotates to discharge the now block-shaped metal powder for subsequent drying. Therefore, this not only makes the entire dehydration and drying process continuous but also avoids separate dehydration and drying processes, thus improving the overall drying efficiency.

[0016] This application employs a drying unit that refines the bulk metal powder during automatic feeding, reducing the processing steps for the bulk powder. Therefore, it effectively solves the problem of the time required for drying bulk powder in existing processes and greatly improves the efficiency of dehydration and drying. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the overall structure from another angle in Embodiment 1 of this application; Figure 3 This is a top view of the overall structure in Embodiment 1 of this application; Figure 4 This is a schematic diagram of a partial explosion of the dehydration cylinder and the receiving plate in Embodiment 1 of this application; Figure 5 This is a partial cross-sectional structural diagram of the wastewater collection tank in Embodiment 1 of this application; Figure 6 This is a schematic diagram of the pre-fracture trigger in Embodiment 2 of this application; Figure 7 This is a schematic diagram of the location of the feeding channel and drying box in Embodiment 2 of this application; Figure 8 This is a schematic diagram of the opening component in Embodiment 2 of this application; Figure 9 This is a schematic diagram of the drying component in Embodiment 2 of this application; Figure 10 This is a schematic diagram of the drying component from another angle in Embodiment 2 of this application.

[0018] In the diagram: 100, frame; 10, dewatering tank; 101, rotating shaft; 102, first extrusion plate; 103, second extrusion plate; 104, inlet pipe; 105, second telescopic component; 106, connecting frame; 107, third extrusion block; 20, receiving plate; 201, wastewater collection tank; 202, guide plate; 203, outlet; 30, discharge port; 301, filter hole; 40, synchronous extrusion component; 401, arc-shaped track; 402, moving block; 403, first telescopic component; 50, discharge rotating component; 501, drive gear; 502. 1. Gear ring; 2. Drying unit; 21. Drying assembly; 211. Drying box; 212. Refining roller; 213. Drying roller; 214. Material discharge channel; 215. Drying hole; 216. First guide plate; 217. Material discharge hole; 218. Second guide plate; 219. Material storage space; 22. Opening assembly; 221. Opening plate; 222. Gear groove; 223. Drive wheel; 23. Pre-crushing trigger; 231. Material discharge channel; 232. Enclosure plate; 233. First cutting blade; 234. Second cutting blade; 235. Mounting plate; 236. Elastic element. Detailed Implementation

[0019] This application discloses a metal powder dehydration device. The technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0020] To better understand the above technical solution, the following will provide a detailed explanation of the technical solution in conjunction with the accompanying drawings and specific implementation methods.

[0021] Example 1: Refer to Figures 1-6A metal powder dehydration device includes a frame 100 and a dehydration tank 10 rotatably mounted on top of the frame 100. The frame 100 has a rectangular box structure. The dehydration tank 10 is annular in shape and located inside the frame 100. The dehydration tank 10 is concentrically connected to a rotating shaft 101, which is mounted on a receiving plate 20. A first extrusion plate 102 and a second extrusion plate 103 are rotatably arranged on the rotating shaft 101. Liquid inlet pipes 104 are respectively opened on both sides of the dehydration tank 10 connected to the center. The frame 100 is symmetrically arranged with a receiving plate 20 for placing fluid metal powder and a discharge port 30 for discharging the extruded block metal powder at the position of the dehydration tank 10. The receiving plate 20 is provided with filter holes 301. The longitudinal height of the first extrusion plate 102 is greater than that of the second extrusion plate 103, which allows the first extrusion plate 102 and the second extrusion plate 103 to rotate relative to each other, thus avoiding interference. A sealing gasket is installed at the position where the first extrusion plate 102 and the second extrusion plate 103 rotate relative to each other, which can reduce the liquid generated during the extrusion process. As the fluid metal powder is extruded by the relative movement of the first extrusion plate 102 and the second extrusion plate 103, the excess liquid is discharged onto the receiving plate 20. Of course, a small amount of liquid will leak into the discharge port 30 during this process, but it is not enough to affect the overall drying of the discharge channel 231. In this system, a sealing gasket is provided between the bottom receiving plates 20 of the dehydration tank 10. At the same time, a sealing gasket is also provided between the first extrusion plate 102 and the second extrusion plate 103 and the receiving plate 20. This allows the liquid generated by the first extrusion plate 102 and the second extrusion plate 103 during extrusion to be completely sealed between the receiving plate 20 and the first extrusion plate 102 and the second extrusion plate 103 (the receiving plate 20 is located at the top of the guide plate 202, and one side of the receiving plate 20 is integrally formed with the filter plate, on which filter holes 301 are provided). The liquid then flows through the filter holes 301 and finally falls into the guide plate 202. A synchronous extrusion member 40 is provided between the first extrusion plate 102, the second extrusion plate 103, and the dehydration tank 10 for synchronously driving the first extrusion plate 102 and the second extrusion plate 103 to rotate relative to / opposite to extrude / release fluid metal powder. The synchronous extrusion member 40 includes an arc-shaped track 401 disposed on the top of the dehydration tank 10. A moving block 402 is fixedly connected to one end of the first extrusion plate 102 and the second extrusion plate 103, and the moving block 402 is adapted to the arc-shaped track 401. The moving block 402 is used to control the first extrusion plate 102 and the second extrusion plate 103. The movement of plate 103 is facilitated by a first telescopic member 403 between the dehydration tank 10 and the first extrusion plate 102 and the second extrusion plate 103, which drives the moving block 402 to run along the arc track 401. The first telescopic member 403 is preferably a hydraulic cylinder, wherein the start and stop of the hydraulic cylinder is controlled by an electrical circuit. The telescopic control of the hydraulic cylinder needs to be set according to the actual situation. This application can set an extrusion cycle based on the experimental results that the internal water content of the fluid metal powder is low after several transverse extrusions, thereby facilitating the obtaining of block metal powder with low water content. A second telescopic member 105 is also fixedly connected to the top of the frame 100. The second telescopic member 105 is preferably a hydraulic cylinder, and a connecting frame 106 is fixedly connected to the telescopic end of the second telescopic member 105. A third extrusion block 107 is fixedly connected to both ends of the connecting frame 106. During the extrusion cycle of the first extrusion plate 102 and the second extrusion plate 103, when the first extrusion plate 102 and the second extrusion plate 103 extrude each other once and then return to their initial positions (the initial positions of the first extrusion plate 102 and the second extrusion plate 103 are in a quarter circle of the dehydration tank 10), At the arc position, after one extrusion, the relative angle between the first extrusion plate 102 and the second extrusion plate 103 on the receiving plate 20 becomes smaller. The third extrusion block 107 moves and acts on the basically formed block metal powder, pressing it again to form a shape that fits the first extrusion plate 102 and the second extrusion plate 103, thereby realizing the longitudinal extrusion of the fluid metal powder. During dehydration, the fluid metal powder is subjected to alternating transverse and longitudinal extrusion, which can minimize the water content inside the final block metal powder and help improve the drying efficiency of the block metal powder. A feeding rotating component 50 is provided between the dehydration tank 10 and the frame 100 to allow the dehydration tank 10 to rotate and coincide with the feeding port 30 to feed the extruded block metal powder. The feeding rotating component 50 includes a drive gear 501 mounted on the receiving plate 20, and the drive gear 501 is driven by a first power device. The first power device is preferably an electric motor. A gear ring 502 is fixedly connected to the outer wall of the dehydration tank 10, and the drive gear 501 meshes with the gear ring 502 to drive the dehydration tank 10 to rotate and allow the block metal powder to fall from the feeding port 30. The bottom of the receiving plate 20 is integrally formed with a wastewater collection tank 201, and both sides of the wastewater collection tank 201 are provided with guide plates 202. The two sets of guide plates 202 have an angle, and the wastewater gathers at the angle to form an outlet 203. After the fluid metal powder is extruded by the first extrusion plate 102, the second extrusion plate 103 and the third extrusion block 107 (the resulting block metal powder is the final form formed by the last extrusion by the first extrusion plate 102 and the second extrusion plate 103, that is, it is a fan-shaped structure less than one-quarter of the dehydration tank 10), the dehydration tank 10 rotates 90 degrees under the drive of the drive gear 501 and the gear ring 502. After the rotation, the first extrusion plate 102 and the second extrusion plate 103 inside the dehydration tank 10 also rotate 90 degrees. Then, the first telescopic member 403 is controlled to make the first extrusion plate 102 and the second extrusion plate 103 expand relative to each other, so that the block metal powder loses its clamping effect and falls through the discharge port 30. When dehydration of fluid metal powder is required, the fluid metal powder enters the dehydration tank 10 through the inlet pipe 104. It should be noted that the frame 100 has a clearance groove to allow the inlet pipe 104 to rotate with the dehydration tank 10. The amount of fluid metal powder introduced is controllable, and its liquid level is lower than the height of the arc-shaped track 401. Subsequently, the first telescopic component 403 is activated to synchronously drive the first extrusion plate 102 and the second extrusion plate 103 to rotate relative to each other, thereby achieving extrusion dehydration of the fluid metal powder. On one hand, the liquid generated by extrusion flows from the filter hole 301 of the receiving plate 20 into the wastewater collection tank 201, and the guide plate 202 provided in the wastewater collection tank 201 can concentrate the liquid to the bottom of the wastewater collection tank 201, i.e., the outlet 203. To facilitate the discharge of liquid to the outside of the frame 100, The outlet is connected to a pipe, which is inclined to facilitate the discharge of liquid from one side of the frame 100. On the other hand, when the third extrusion block 107 is squeezed back to its initial position by the first extrusion plate 102 and the second extrusion plate 103, it is driven by the second telescopic member 105 to longitudinally squeeze the basically formed block metal powder, thereby realizing the alternating extrusion of the metal powder, which deforms and squeezes the block metal powder to make its water output rate higher. After the first extrusion plate 102, the second extrusion plate 103 and the third extrusion block 107 have finished extruding, the first power device can be started to drive the dewatering tank 10 to rotate 90 degrees, so that the block metal powder, without the squeezing and clamping action of the first extrusion plate 102 and the second extrusion plate 103, falls through the discharge port 30 under its own gravity, thereby completing the extrusion dewatering process.

[0022] Example 2: Refer to Figures 1-2 and Figures 6-10A drying unit 2 for drying block metal powder is provided at the bottom of the frame 100 and directly below the feed port 30. The drying unit 2 includes a drying component 21 at the bottom of the frame 100 for crushing and drying the block metal powder, and an opening component 22 is provided at the top of the drying component 21. A pre-crushing trigger 23 is provided at the bottom of the frame 100 directly below the feed port 30 for further crushing the block metal powder and opening the opening component 22. The pre-crushing trigger 23 includes a feeding channel 231 located directly below the feeding port 30 and formed by the enclosure plate 232 and the wastewater collection tank 201. A first cutting blade 233 is installed in the feeding channel 231, and a second cutting blade 234 is provided on one side of the first cutting blade 233. An mounting plate 235 is fixedly installed on the enclosure plate 232, and an elastic element 236 is provided between the mounting plate 235 and the second cutting blade 234. A pressure sensor is installed on the mounting plate 235. The elastic element 236 is preferably a spring. The pressure sensor is electrically connected to a controller. The controller is a control element that controls the opening assembly 22 to open. When the pressure sensor receives pressure and transmits this electrical signal to the controller, the controller controls the opening assembly 22 to open. The drying assembly 21 includes a drying box 211 located at the bottom of the feeding channel 231 and fixedly connected to the frame 100. A refining roller 212 is symmetrically rotatably connected inside the drying box 211. The refining roller 212 is driven by a linkage, preferably a gear or gear belt, but not limited to any other linkage that can make the refining roller 212 rotate synchronously. The gear and the refining roller 212 are not coaxially connected, but eccentrically connected. A drying roller 213 is rotatably connected between the two sets of refining rollers 212. A crushing and feeding channel 214 is formed between the drying roller 213 and the refining roller 212. The outer wall of the drying roller 213 has multiple sets of drying holes 215 for blowing air onto the metal powder. An air inlet pipe is provided at one end of the drying roller 213 and is connected to the drying component. The drying component is preferably a hot air blower, but not limited to any other component. A first guide plate 216 is provided between the refining roller 212 and the drying roller 213, and the first guide plate 216 has a feeding hole 217. The first guide plate 216 is evenly spaced at the bottom of the refining roller 212, and one end of it is tangent to the drying roller 213, while the other end is fixedly connected to the drying box 211. A second guide plate 218 is fixedly connected to the end of the drying box 211 away from the refining roller 212. A storage space 219 is formed between the first guide plate 216 and the second guide plate 218, and the distance between the second guide plate 218 and the drying roller 213 is greater than the distance between the first guide plate 216 and the drying roller 213. The opening assembly 22 includes an opening plate 221 symmetrically rotatably disposed on the top of the drying box 211. The bottom of the drying box 211 has an opening, and the opening plate 221 overlaps with the opening and is located at the bottom of the opening. The outer wall of the opening plate 221 is provided with a toothed groove 222. A drive wheel 223 is rotatably connected to one side of the opening plate 221, and the drive wheel 223 is driven by a second power device, preferably a motor. During the drying process, the blocky metal powder falls from the feed port 30 of the frame 100 and enters the drying unit 2 at the bottom of the frame 100, directly below the feed port 30, for crushing, refining and drying. The blocky metal powder first enters the feed channel 231 formed by the side wall of the enclosure 232 and the wastewater collection tank 201. The first cutting blade 233 and the second cutting blade 234 in the feed channel 231 perform preliminary crushing of the blocky metal powder. As the blocky metal powder falls due to its own weight, it will collide with the first cutting blade 233 and the second cutting blade 234. On the one hand, it can impact the second cutting blade 234, causing the elastic element 236 to be squeezed, which in turn acts on the pressure sensor. The pressure sensor transmits an electrical signal to the controller, and the controller controls the opening assembly 22 to open, allowing the material to enter the drying assembly 21 below. On the other hand, the first cutting blade 233 and the second cutting blade 234 cut the blocky metal powder in half, performing preliminary crushing and pulverizing it into smaller pieces. At this time, the controller controls the second motor to start, thereby causing the drive wheel 223 to rotate. During the rotation, the toothed groove 222 connected to it rotates and opens around the axis of the opening plate 221. Both sets of opening plates 221 have sealing gaskets installed on their opposite side walls to seal the drying box 211, thereby realizing the automatic opening and closing of the upper opening of the drying box 211. This, together with the pressure sensor, enables on-demand feeding and linkage control. After the opening plate 221 is opened, the refined blocky metal powder falls into the drying chamber 211. The blocky metal powder first falls onto the drying roller 213 and slides down the surface of the drying roller 213 in an arc shape to both sides. Under the rolling action of the refining roller 212, the sliding blocky metal powder moves downward through the material discharge channel 214. Metal powder smaller than the distance between the refining roller 212 and the drying roller 213 will fall onto the first guide plate 216 along with the refined powder. Since the refining roller 212 rotates eccentrically, the distance between it and the first guide plate 216 can be changed, so it can pass through the crushing action of the refining roller 212. The metal powder is further pulverized by the action of the drying roller 213, and under the action of the hot air, it is more easily refined into smaller metal powder particles. The metal powder moves along the first guide plate 216 and passes through the feeding hole 217. The feeding hole 217 can also be used to control the falling speed and flow rate of the material, so that it slowly enters the storage space 219. The heat radiation transfer effect of the storage space 219 is better, so that the drying roller 213 can better act on the metal powder. As the amount of metal powder increases, it finally moves along the second guide plate 218 to the bottom of the drying roller 213, and is dried again in the drying box 211. The distance between the second guide plate 218 and the drying roller 213 is greater than the distance between the first guide plate 216 and the drying roller 213, so as to achieve stable material guiding, avoid material jamming, and ensure uniform drying and crushing effect.

[0023] How this application works: Fluid metal powder is controllably injected into the dehydration tank 10 through the liquid inlet pipe 104 (the frame 100 has a pre-set clearance groove to provide room for the liquid inlet pipe 104 to rotate with the dehydration tank 10, ensuring that the subsequent rotation of the dehydration tank 10 is not restricted). The height of the injected liquid level is strictly controlled to be lower than the height of the arc track 401 to avoid material overflow interfering with the operation of the extrusion assembly. At this time, the dehydration tank 10 is in the initial position, and the first extrusion plate 102 and the second extrusion plate 103 are located at the quarter arc position of the dehydration tank 10, in an unfolded standby state, receiving the injected fluid metal powder. By alternating between a horizontal primary extrusion and a vertical secondary extrusion, the moisture in the fluid metal powder is maximized, reducing energy consumption for subsequent drying. Lateral initial extrusion dehydration: The first telescopic component 403 is preferably a hydraulic cylinder, which drives the moving blocks 402 at the ends of the first extrusion plate 102 and the second extrusion plate 103 to run along the arc-shaped track 401 at the top of the dehydration tank 10, causing the first extrusion plate 102 and the second extrusion plate 103 to rotate relative to each other. Since the longitudinal height of the first extrusion plate 102 is greater than that of the second extrusion plate 103, there is no interference when they rotate relative to each other. With the sealing gasket of the contact surface, the liquid generated by extrusion is completely sealed between the first extrusion plate 102 and the second extrusion plate 103 and the receiving plate 20. During the extrusion process, the excess liquid in the fluid metal powder flows through the filter hole 301 of the receiving plate 20 and into the wastewater collection tank 201 at the bottom. The guide plate 202 in the collection tank is set at an angle to gather the dispersed liquid to the outlet 203, and then discharges it to the outside of the frame 100 through the inclined pipe, completing the centralized treatment of the liquid.

[0024] Vertical secondary extrusion refinement: After the first extrusion plate 102 and the second extrusion plate 103 complete one transverse extrusion, they return to the initial unfolded position; The second telescopic component 105 (preferably a hydraulic cylinder) is activated simultaneously, driving the connecting frame 106 and the third extrusion blocks 107 at both ends to move downwards and act on the initially formed block metal powder. The third extrusion block 107 performs longitudinal extrusion on the material, making it conform to the shape of the first and second extrusion plates and further densify it, expelling residual moisture, realizing alternating transverse and longitudinal extrusion, and reducing the final moisture content of the block metal powder.

[0025] The dehydration tank 10 rotates to release the molded material: After the extrusion and dehydration process is completed, the feeding rotating component 50 is activated, driving the dehydration box 10 to rotate synchronously with the formed material, completing the material transfer. The preferred motor of the first power unit is activated, driving the drive gear 501 to rotate. Through meshing, the gear ring 502 on the outer wall of the dehydration box 10 rotates, causing the dehydration box 10 to rotate 90 degrees as a whole. After the dehydration box 10 rotates, the feeding port 30 on the frame 100 provides a channel for the block metal powder to fall (again, the first telescopic component 403 is controlled to retract, driving the first extrusion plate 102 and the second extrusion plate 103 to expand relative to each other, releasing the clamping constraint on the block metal powder). Under its own gravity, the block metal powder falls through the feeding port 30 to the drying unit 2 below, completing the closed loop of the dehydration process. The fallen lumpy metal powder is processed through the pre-crushing trigger of drying unit 2 → feeding start → crushing and drying → material guiding and storage, realizing the transformation from lumpy to dry fine powder: Blocky metal powder falls from the feed port 30 and enters the feed channel 231, which is composed of the enclosure plate 232 and the wastewater collection box 201, and collides with the first cutting blade 233 and the second cutting blade 234 in the channel. The impact of the blocky metal powder causes the second cutting blade 234 to squeeze the elastic element 236 spring, triggering the pressure sensor to generate an electrical signal, which is transmitted to the controller. After receiving the signal, the controller controls the second power unit of the opening assembly 22, preferably the motor, to start, drive the drive wheel 223 to rotate, drive the meshing tooth groove 222 to rotate and open the opening plate 221, opening the upper opening of the drying box 211 to realize material feeding.

[0026] Preliminary grinding and refining: The drying channel opened by the opening plate 221 allows the falling blocky metal powder to be broken in half by the first and second cutting blades, forming smaller particles to prepare for subsequent drying. When the opening plate 221 is closed, the sealing gasket on its side wall ensures the airtightness of the drying box 211, preventing hot air leakage and improving drying efficiency. The crushed particles fall into the drying box 211 and slide down the arc-shaped surface of the outer wall of the drying roller 213. One end of the drying roller 213 is connected to the hot air blower through the air inlet pipe. Hot air is blown out from the drying hole 215 on the roller wall to dry the particles in real time. The drying roller 213 cooperates with the two refining rollers 212 on both sides. Under the drive of the connecting gear and gear belt, the refining roller 212 is driven to rotate eccentrically, further crushing and refining the particles, so that they can pass through the crushing and dropping channel 214 and move downward. The refined metal powder moves along the first guide plate 216, and its falling speed and flow rate are controlled by the feeding hole 217, and it slowly enters the storage space 219 between the first and second guide plates. The distance between the second guide plate 218 and the drying roller 213 is greater than the distance between the first guide plate 216, forming a smooth material guiding path to avoid material jamming. At the same time, the heat radiation of the storage space 219 is more uniform, ensuring the drying effect. As the amount of material increases, the metal powder moves along the second guide plate 218 to the bottom of the drying roller 213, where it is dried again by hot air, eventually forming dry fine metal powder.

[0027] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0028] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A metal powder dewatering device comprising a frame (100), characterized in that, Also includes: A dehydration tank (10) is rotatably mounted on the top of the frame (100), and the dehydration tank (10) is concentrically connected to a rotating shaft (101). A first extrusion plate (102) and a second extrusion plate (103) are rotatably mounted on the rotating shaft (101). Liquid inlet pipes (104) are respectively opened on both sides of the center of the dehydration tank (10). A receiving plate (20) for placing fluid metal powder and a discharge port (30) for discharging the extruded block metal powder are symmetrically arranged at the position of the dehydration tank (10) on the frame (100). A filter hole (301) is opened on the receiving plate (20). Synchronous extrusion member (40) is disposed between the first extrusion plate (102), the second extrusion plate (103) and the dehydration tank (10), and is used to synchronously drive the first extrusion plate (102) and the second extrusion plate (103) to rotate relative to each other / opposite to extrude / release fluid metal powder; The feeding rotating part (50) is located between the dehydration box (10) and the frame (100) to feed the extruded block metal powder by rotating the dehydration box (10) by aligning it with the feeding port (30). The drying unit (2) is located at the bottom of the frame (100) and directly below the feed port (30), and is used to dry the block metal powder. The synchronous extrusion member (40) includes: An arc-shaped track (401) is located on top of the dehydration tank (10); A movable block (402) is fixedly connected to one end of the first extrusion plate (102) and the second extrusion plate (103), and the movable block (402) is adapted to the arc track (401) for controlling the movement of the first extrusion plate (102) and the second extrusion plate (103); The first telescopic component (403) is movably disposed between the dehydration tank (10) and the first extrusion plate (102) and the second extrusion plate (103), respectively, and is used to drive the moving block (402) to run along the trajectory of the arc track (401); The feeding rotating component (50) includes: A drive gear (501) is mounted on a receiving plate (20) and is driven by a first power device. The gear ring (502) is fixedly connected to the outer wall of the dehydration tank (10), and the drive gear (501) meshes with the gear ring (502) to drive the dehydration tank (10) to rotate by an angle so that the block metal powder falls from the feed port (30).

2. A metal powder dewatering apparatus as claimed in claim 1, wherein The top of the frame (100) is also fixedly connected to a second telescopic member (105), and the telescopic end of the second telescopic member (105) is fixedly connected to a connecting frame (106), and both ends of the connecting frame (106) are fixedly connected to a third extrusion block (107).

3. The metal powder dewatering apparatus of claim 1, wherein The bottom of the receiving plate (20) is integrally formed with a wastewater collection tank (201), and both sides of the wastewater collection tank (201) are provided with guide plates (202). The two sets of guide plates (202) have an angle, and the wastewater gathers at the angle to form an outlet (203).

4. The metal powder dewatering apparatus of claim 1, wherein The drying unit (2) includes: A drying assembly (21) is located at the bottom of the frame (100) and is used to crush and dry block metal powder. An opening assembly (22) is provided on the top of the drying assembly (21). A pre-crushing trigger (23) is located on the frame (100) and directly below the feed inlet (30) to subdivide the bulk metal powder while opening the opening assembly (22).

5. A metal powder dewatering apparatus as claimed in claim 4, wherein The pre-break trigger (23) includes: The material discharge channel (231) is located directly below the material discharge port (30) and is connected to the wastewater collection box (201) via a surrounding panel (232); The first cutting blade (233) is located in the feeding channel (231), and a second cutting blade (234) is provided on one side of the first cutting blade (233). Mounting plate (235) is provided on enclosure plate (232), and an elastic element (236) is provided between mounting plate (235) and second cutting blade (234), and a pressure sensor is installed on mounting plate (235).

6. A metal powder dewatering apparatus as claimed in claim 4, wherein The drying assembly (21) includes: A drying box (211) is located at the bottom of the feeding channel (231) and is fixedly connected to the frame (100); The refining rollers (212) are symmetrically rotatably connected inside the drying box (211), and the refining rollers (212) are driven by the linkage. The drying roller (213) is rotatably disposed inside the drying box (211) and located between two sets of refining rollers (212), forming a crushing and feeding channel (214) between it and the refining rollers (212). The outer wall of the drying roller (213) is provided with multiple sets of drying holes (215) for blowing air onto the metal powder, and one end of the drying roller (213) is provided with an air inlet pipe, which is connected to the drying component.

7. A metal powder dewatering apparatus as claimed in claim 6, wherein A first guide plate (216) is provided between the refining roller (212) and the drying roller (213), and the first guide plate (216) has a feeding hole (217). A second guide plate (218) is fixedly connected to the end of the drying box (211) away from the refining roller (212). A storage space (219) is formed between the first guide plate (216) and the second guide plate (218), and the distance between the second guide plate (218) and the drying roller (213) is greater than the distance between the first guide plate (216) and the drying roller (213).

8. A metal powder dewatering apparatus as claimed in claim 4, wherein The opening assembly (22) includes: An opening plate (221) is symmetrically rotated and disposed on the top of the drying box (211). The bottom of the drying box (211) has an opening, and the opening plate (221) overlaps with the opening and is located at the bottom of the opening. The outer wall of the opening plate (221) is provided with a toothed groove (222). The drive wheel (223) is rotatably located on one side of the opening plate (221), and the drive wheel (223) is driven by the second power device.

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