Metal powder slurry cold pressing instant drying device capable of recycling waste liquid

Abstract

The present invention discloses a metal powder slurry cold pressing instant drying device capable of recycling waste liquid, and the present invention relates to the technical field of metal powder processing. The metal powder slurry cold pressing instant drying device, by providing a dehydration execution unit 1, a dehydration execution unit 2 and a cylinder 2, the three of which can together form a closed space, provide space for the cold pressing and drying of the metal powder slurry, complete the preliminary cold pressing and forming operation of the metal powder in the metal slurry, and the metal powder cake after the cold pressing and forming can be automatically discharged without manual intervention, thereby reducing labor costs; and by providing a secondary dehydration mechanism, the wastewater formed after the preliminary cold pressing and dehydration of the metal powder slurry can be dehydrated again, and the metal powder remaining in the wastewater can be recycled, thereby avoiding the waste of metal powder, saving the cost of cold pressing and drying the metal powder slurry, and also avoiding the problem of metal powder in the wastewater polluting the surrounding environment.

Description

Technical Field

[0001] The invention relates to the technical field of metal powder processing, in particular to a metal powder slurry cold pressing instant drying device capable of recycling waste liquid. Background Art

[0002] The metal powder slurry cold pressing instant drying device is a special equipment designed to process metal powder slurry through cold pressing and instant drying technology to achieve a specific drying effect.

[0003] A water-atomized metal powder rapid dehydration device is disclosed in a patent application with reference publication number CN216397996U. The patent application has a simple structure and is easy to use. It realizes the dehydration process at the same time as the atomization process. The dehydration is basically completed when the atomization is completed, which effectively reduces the process time cost; the dehydration time of the dehydration device is reduced, and the water content of the metal powder after dehydration is effectively reduced, which greatly reduces the workload of subsequent drying.

[0004] A comprehensive analysis of the above patents reveals the following defects:

[0005] At present, the dehydration methods of metal powder slurry mostly use filtration, centrifugation or filter pressing to remove water from the slurry for subsequent processing or storage; however, due to the small size of metal powder particles, some fine particles are easily carried out by the water flow during the dehydration process and cannot be completely and effectively separated. When wastewater containing incompletely separated metal particles is directly discharged or treated as wastewater, it will not only cause a significant waste of metal resources and increase production costs, but also pollute the environment; therefore, there is an urgent need for a metal powder slurry cold press instant drying device that can dehydrate and dry the metal powder slurry while recovering the metal particles remaining in the wastewater to avoid the waste of metal particles and at the same time purify the wastewater. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a metal powder slurry cold pressing instant drying device capable of recycling waste liquid, which solves the problem that in the traditional metal powder slurry cold pressing drying method, due to the small size of metal powder particles, some fine particles are easily carried out by the water flow during the dehydration process and cannot be completely and effectively separated. When the wastewater containing incompletely separated metal particles is directly discharged or treated as wastewater, it will not only cause a significant waste of metal resources and increase production costs, but also pollute the environment.

[0007] To achieve the above objectives, the present invention is implemented through the following technical scheme: a metal powder slurry cold pressing instant drying device capable of recycling waste liquid comprises:

[0008] A support frame assembly is used to provide support for the cold pressing and drying operation of the metal powder slurry, and includes a power box 1 and a power box 2 which are arranged opposite to each other on the left and right sides, and three support rods are arranged in a triangular shape on the opposite side walls of the power box 1 and the power box 2, and the outer walls of the three support rods are respectively slidably sleeved with a reinforcing plate 1 and a reinforcing plate 2 on the left and right sides;

[0009] A primary dehydration mechanism, comprising a dehydration execution unit 1 and a dehydration execution unit 2, which are used to cooperate with each other to complete the cold pressing and drying of the metal powder slurry;

[0010] The secondary dehydration mechanism is slidably sleeved on the outer walls of the plurality of support rods and is used to recover the metal powder remaining in the wastewater from which the metal powder slurry is separated, thereby completing the separation of the wastewater and the residual metal powder.

[0011] Furthermore, the dehydration execution unit 1 includes a hydraulic cylinder 1 fixedly arranged inside a power box 1, and one end of the hydraulic cylinder 1 away from the power box 1 penetrates a reinforcing plate 1 and is provided with a dehydration execution unit 1;

[0012] The second dehydration execution unit comprises a second hydraulic cylinder fixedly arranged inside the second power box, and the output end of the second hydraulic cylinder penetrates the second reinforcing plate and is fixedly provided with the second dehydration execution unit.

[0013] Furthermore, it also includes a feed pipe fixedly arranged at the bottom of the hydraulic cylinder 2, the feed pipe passes through the dehydration execution unit 2 and extends to the space between the dehydration execution unit 1 and the dehydration execution unit 2, and is used to transport metal powder slurry to the closed space formed by the dehydration execution unit 1, the dehydration execution unit 2 and the secondary dehydration mechanism. A flow meter and a one-way valve are fixedly arranged inside the feed pipe. The flow meter is used to measure the amount of metal powder slurry input between the hydraulic cylinder 2 and the dehydration execution unit 2, and the one-way valve is used to only allow the metal powder slurry to flow from the inlet of the feed pipe into the area between the dehydration execution unit 1 and the dehydration execution unit 2. Hydraulic cylinders 3 are symmetrically arranged inside the power box 2 and on both sides of the hydraulic cylinder 2. The output ends of the two hydraulic cylinders 3 slide through the power box 2 and are connected to the secondary dehydration mechanism.

[0014] Furthermore, the structures of the dehydration execution unit 1 and the dehydration execution unit 2 are exactly the same. The dehydration execution unit 2 includes a cylinder body 1 and a filter plate fixedly arranged at one end of the cylinder body. A sealing ring 1 and a sealing ring 2 are fixedly mounted on both sides of the outer wall of the filter plate. An annular groove is formed between the sealing ring 1 and the sealing ring 2. A plurality of drainage holes 1 are evenly arranged on the outer wall of the cylinder body 1 and located in the annular groove.

[0015] Furthermore, the secondary dehydration mechanism includes two reinforcing plates three that are slidably sleeved together on the outer walls of the three reinforcing plates one and a dehydration cylinder assembly that is arranged inside the two reinforcing plates three, the outer sleeve of the dehydration cylinder assembly is provided with a switching assembly for recovering residual metal powder in the wastewater, and the outer walls of the two reinforcing plates three are respectively fixed with a driving assembly one and a driving assembly two through support arms, which are used to provide driving force for the switching assembly to recover the residual metal powder;

[0016] The dehydration cylinder assembly includes a cylinder body 2 fixedly arranged inside two reinforcing plates 3, and drainage holes 2 and 3 are respectively opened on both sides of the inner wall of the cylinder body 2. A drainage pipe is fixedly arranged on the outer wall of the cylinder body 2, and the drainage pipe is respectively connected to the drainage hole 2 and the drainage hole 3 through branches.

[0017] Further, the driving assembly 1 includes a driving ring 1 and an arc-shaped driving block 1 fixedly arranged on a side wall of the driving ring, and both ends of the arc-shaped driving block 1 are provided with chamfers;

[0018] The second driving assembly comprises a second driving ring, a second arc-shaped driving block fixedly arranged on the side wall of the second driving ring, and a protrusion, wherein the protrusion is fixedly connected to one end of the second arc-shaped driving block.

[0019] Further, the switching assembly includes an annular sleeve and a gear ring fixedly arranged on the side wall of the annular sleeve, a plurality of dehydration units for recovering metal powder are evenly arranged on the outer wall of the annular sleeve, an annular slider is fixedly arranged on the inner wall of the annular sleeve, a plurality of through holes corresponding to the positions of the dehydration units are evenly opened on the inner wall of the annular slider, and each through hole is connected to the inside of the dehydration unit at the corresponding position;

[0020] An annular frame is rotatably arranged inside the annular sleeve, and a connecting pipe is fixedly arranged on the inner wall of the annular frame. The connecting pipe and the plurality of through holes are located on the same circumference. After the positions of the connecting pipe and one of the through holes coincide, the liquid can enter the dehydration unit at the corresponding position through the connecting pipe and the through hole.

[0021] A power unit for driving the gear ring to rotate is arranged on the inner wall of the annular frame. The power unit comprises a servo motor fixedly arranged on the inner wall of the annular frame. A gear meshing with the gear ring is fixedly arranged on the output shaft of the servo motor.

[0022] Furthermore, the dehydration unit comprises a cylinder body 3 fixedly arranged on the outer wall of the annular sleeve, a waste liquid inlet connected to one of the through holes is provided on the top of the cylinder body 3, and a metal cake outlet is provided on the outer wall of the cylinder body 3 opposite to the waste liquid inlet for discharging the recovered metal powder cake;

[0023] A filter press assembly 1 and a filter press assembly 2 are respectively arranged on both sides of the interior of the cylinder body 3, and the filter press assembly 1 includes a mounting plate fixedly arranged on the inner wall of the cylinder body 3 and a plurality of metal clearing needles evenly fixedly arranged on the side wall of the mounting plate, a push rod 2 is slidably penetrated inside the mounting plate, a filter press cartridge is fixedly arranged at one end of the push rod 2, and filter holes corresponding to the positions of the plurality of metal clearing needles are evenly opened on the side wall of the filter press cartridge, a hemispherical block 1 is fixedly arranged at one end of the push rod 2 away from the filter press cartridge, and a spring 2 is provided on the outer wall of the push rod 2 and on a sliding sleeve located between the annular sleeve and the hemispherical block.

[0024] Furthermore, the filter press assembly 2 includes an extrusion block slidably arranged inside the cylinder 3, a push rod 1 is fixedly arranged on the side wall of the extrusion block away from the filter press assembly 1, a hemispherical block 2 is fixedly arranged on the end of the push rod 1 away from the extrusion block, and a spring 1 is provided on the outer wall of the push rod 1 and is located between the hemispherical block 2 and the outer wall of the annular sleeve.

[0025] The present invention provides a metal powder slurry cold pressing instant drying device that can recycle waste liquid. Compared with the prior art, it has the following beneficial effects:

[0026] 1. A cold pressing instant drying device for metal powder slurry in which waste liquid can be recycled, by setting a dehydration execution unit 1, a dehydration execution unit 2 and a cylinder 2, the three of which can together form a closed space, provide space for the cold pressing and drying of the metal powder slurry, complete the preliminary cold pressing and forming operation of the metal powder in the metal slurry, and the metal powder cake after cold pressing and forming can be automatically discharged without manual intervention, thereby reducing labor costs; and by setting a secondary dehydration mechanism, the wastewater formed after the preliminary cold pressing and dehydration of the metal powder slurry can be dehydrated again, and the metal powder remaining in the wastewater can be recycled, thereby avoiding the waste of metal powder, saving the cost of cold pressing and drying the metal powder slurry, and also avoiding the problem of metal powder in the wastewater polluting the surrounding environment.

[0027] 2. A cold-pressed instantaneous drying device for metal powder slurry in which waste liquid can be recycled. A secondary dehydration mechanism is provided. A plurality of dehydration units are provided in the secondary dehydration mechanism, and the plurality of dehydration units can switch positions relative to the cylinder body 2, so that each time the metal powder slurry is cold-pressed and dried, the wastewater generated in the cold-pressing process can be automatically collected, and while the plurality of dehydration units switch positions, the collected wastewater can be squeezed for a long time, thereby achieving the effect of separating the wastewater and the metal powder, and the metal powder remaining in the wastewater can be squeezed into a pancake shape, thereby achieving the purpose of cold-pressing and drying the metal powder remaining in the wastewater; secondly, the dehydration action of each dehydration unit is realized during the rotation of the annular sleeve, and there is no need to separately provide a power device for each dehydration unit, so that the structure of the secondary dehydration mechanism is simpler.

[0028] 3. A cold-pressed instantaneous drying device for metal powder slurry in which waste liquid can be recycled, by setting a dehydration unit and drive component 1 and drive component 2, can utilize the mutual cooperation of drive component 1 and drive component 2 during the rotation of the dehydration component. When squeezing wastewater, the filter press can block the metal cake outlet to prevent metal powder from "escaping". After completing the squeezing operation on the wastewater, the filter press can automatically move away from the metal cake outlet, so that the metal cake outlet is completely exposed, providing necessary conditions for the subsequent discharge of cold-pressed metal cakes. When the filter press is away from the metal cake outlet, the extrusion block can approach the direction of the metal cake outlet, so as to push the cold-pressed metal cake to the position of the metal cake outlet, so that the metal cake outlet can be automatically discharged from the cylinder body 3, without the need for manual material collection, thereby reducing the labor intensity of the staff.

[0029] 4. The cold-pressed instant drying device for metal powder slurry, which can recycle waste liquid, can automatically pass through the filter holes at the corresponding positions when the filter cartridge is reset by arranging multiple metal clearing needles in the filter press component, thereby clearing the filter holes and preventing the filter cartridge from being blocked, thereby improving the ability of the dehydration unit to collect metal powder in wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the first overall three-dimensional structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the second overall three-dimensional structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the present invention after removing the secondary dehydration component;

[0033] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of part A;

[0034] Figure 5 This is a schematic diagram of the first structure of the secondary dehydration assembly of the present invention;

[0035] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of part B in FIG.

[0036] Figure 7 This is a second structural schematic diagram of the secondary dehydration assembly of the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of the secondary dehydration component of the present invention in the first decomposition state;

[0038] Fig. 9 For the present invention Figure 8 A schematic diagram of the enlarged structure of part C in FIG.

[0039] Fig.10 This is a schematic diagram of the structure of the secondary dehydration component of the present invention in the second decomposition state;

[0040] Fig.11 This is a schematic diagram of the decomposed state structure of the switching component of the present invention;

[0041] Fig.12 It is a schematic cross-sectional structure diagram of the dehydration unit of the present invention;

[0042] Fig.13 This is a schematic diagram of the structure of the dehydration unit of the present invention in a dehydration state;

[0043] Fig.14 This is a schematic diagram of the structure of the metal cake discharge state of the dehydration unit of the present invention;

[0044] Fig.15 This is a schematic diagram of the structure of a filter press assembly in a disassembled state according to the present invention;

[0045] Fig.16 It is a schematic structural diagram of the filter press assembly of the present invention in an assembled state.

[0046] In the figure: 1, power box 1; 2, power box 2; 3, support rod; 4, reinforcement plate 1; 5, hydraulic cylinder 1; 6, dehydration execution unit 1; 7, reinforcement plate 2; 8, hydraulic cylinder 2; 9, dehydration execution unit 2; 91, cylinder 1; 92, filter plate; 93, sealing ring 1; 94, sealing ring 2; 95, drainage hole 1; 10, feed pipe; 11, secondary dehydration mechanism; 111, reinforcement plate 3; 112, dehydration cylinder assembly; 1121, cylinder 2; 1122, drainage hole 2; 1123, drainage hole 3; 1124, drainage pipe; 113, switching assembly; 1131, annular sleeve; 1132, gear ring; 1133, dehydration unit; 11331, cylinder 3; 11332, waste liquid inlet; 1 1333, metal cake outlet; 11334, filter press component one; b1, mounting plate; b2, metal clearing needle; b3, filter press cartridge; b4, filter hole; b5, drain port; b6, push rod two; b7, spring two; 11335, filter press component two; a1, extrusion block; a2, push rod one; a3, spring one; 1134, annular slider; 1135, through hole; 1136, annular frame; 1137, connecting pipe; 1138, servo motor; 1139, gear; 114, drive component one; 1141, drive ring one; 1142, arc drive block one; 115, drive component two; 1151, drive ring two; 1152, arc drive block two; 1153, bump; 12, hydraulic cylinder three. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] like Figures 1 to 16 The present invention provides three technical solutions: a metal powder slurry cold pressing instant drying device capable of recycling waste liquid, specifically including the following embodiments:

[0049] Embodiment 1: A metal powder slurry cold pressing instant drying device capable of recycling waste liquid, comprising:

[0050] A support frame assembly is used to provide support for the cold pressing and drying operation of the metal powder slurry, which includes a power box 1 and a power box 2 which are arranged opposite to each other on the left and right sides, and three support rods 3 are arranged in a triangular shape on the opposite side walls of the power box 1 and the power box 2. The outer walls of the three support rods 3 are respectively slidably sleeved with a reinforcing plate 1 4 and a reinforcing plate 2 7 on the left and right sides;

[0051] A primary dehydration mechanism, comprising a dehydration execution unit 1 6 and a dehydration execution unit 2 9, which are used to cooperate with each other to complete the cold pressing and drying of the metal powder slurry;

[0052] The secondary dehydration mechanism 11 is slidably sleeved on the outer walls of the plurality of support rods 3 and is used to recover the metal powder remaining in the wastewater separated from the metal powder slurry, thereby completing the separation of the wastewater and the residual metal powder.

[0053] The dehydration execution unit 1 includes a hydraulic cylinder 1 5 fixedly arranged inside the power box 1, and one end of the hydraulic cylinder 5 away from the power box 1 penetrates the reinforcing plate 1 4 and is provided with a dehydration execution unit 1 6;

[0054] The dehydration execution unit 2 includes a hydraulic cylinder 28 fixedly arranged inside the power box 2, the output end of the hydraulic cylinder 28 passes through the reinforcing plate 27 and is fixedly provided with a dehydration execution unit 29, the hydraulic cylinder 15 and the reinforcing plate 14 are fixedly connected by bolts; the hydraulic cylinder 28 and the reinforcing plate 27 are connected by bolts; the metal powder slurry cold pressing instant drying device also includes a feed pipe 10 fixedly arranged at the bottom of the hydraulic cylinder 28, the feed pipe 10 passes through the dehydration execution unit 29 and extends to the space between the dehydration execution unit 16 and the dehydration execution unit 29, and is used to feed the closed space composed of the dehydration execution unit 16, the dehydration execution unit 29 and the secondary dehydration mechanism 11. The metal powder slurry is transported in the closed space composed of the dehydration execution unit 16, the dehydration execution unit 29 and the drainage pipe 1124. The flow meter and the one-way valve are fixedly arranged inside the feed pipe 10. The flow meter is used to measure the amount of metal powder slurry input between the hydraulic cylinder 28 and the dehydration execution unit 29. The one-way valve is used to only allow the metal powder slurry to flow from the inlet of the feed pipe 10 into the area between the dehydration execution unit 16 and the dehydration execution unit 29. Hydraulic cylinders 3 12 are symmetrically arranged inside the power box 22 and on both sides of the hydraulic cylinder 28. The output ends of the two hydraulic cylinders 3 12 slide through the power box 22 and are connected to the secondary dehydration mechanism 11. The structures of the dehydration execution unit 1 6 and the dehydration execution unit 2 9 are completely the same. The dehydration execution unit 2 9 includes a cylinder 1 91 and a filter plate 92 fixedly arranged at the end of the cylinder 1 91. The outer wall of the filter plate 92 is respectively fixedly sleeved with a sealing ring 1 93 and a sealing ring 2 94. An annular groove is formed between the sealing ring 1 93 and the sealing ring 2 94. A plurality of drainage holes 1 95 are evenly opened on the outer wall of the cylinder 1 91 and located in the annular groove. The drainage hole 2 1122 is always located in the annular groove between the sealing ring 1 93 and the sealing ring 2 94 in the dehydration execution unit 2 9. The drainage hole 3 1123 is always located in the annular groove between the sealing ring 1 93 and the sealing ring 2 94 in the dehydration execution unit 1 6. The filtered wastewater passes through the filter plates 92 in the dehydration execution unit 1 6 and the dehydration execution unit 2 9 and flows into the drainage hole 3 1123 and the drainage hole 2 1122 at the corresponding positions through the respective drainage holes 1 95. The wastewater is discharged together through the same drainage pipe 1124.

[0055] Embodiment 2: The main difference between this embodiment and the first technical solution is that: the metal powder slurry cold pressing instant drying device that can recycle waste liquid, the secondary dehydration mechanism 11 includes two reinforcing plates 111 that are slidably sleeved on the outer walls of the three reinforcing plates 14 and a dehydration cylinder assembly 112 that is arranged inside the two reinforcing plates 111, the outer sleeve of the dehydration cylinder assembly 112 is provided with a switching assembly 113 for recovering residual metal powder in the waste water, and the outer walls of the two reinforcing plates 111 are respectively fixed with a The driving assembly 114 and the driving assembly 2 115 are used to provide driving force for the switching assembly 113 to recover the residual metal powder; the dehydration cylinder assembly 112 includes a cylinder body 2 1121 fixedly arranged inside the two reinforcing plates 3 111, and the inner wall of the cylinder body 2 1121 is respectively provided with a drainage hole 2 1122 and a drainage hole 3 1123, and a drainage pipe 1124 is fixedly arranged on the outer wall of the cylinder body 2 1121, and the drainage pipe 1124 is respectively connected to the drainage hole 2 1122 and the drainage hole 3 1123 through a branch pipe. A second one-way valve is arranged inside the drainage pipe 1124, and the second one-way valve can prevent the wastewater entering the dehydration unit 1133 from flowing back. Driving component 114 includes a driving ring 1141 and an arc-shaped driving block 1142 fixedly arranged on the side wall of the driving ring 1141, and both ends of the arc-shaped driving block 1142 are provided with chamfers; driving component 2 115 includes a driving ring 1151 and an arc-shaped driving block 1152 fixedly arranged on the side wall of the driving ring 1151, and a protrusion 1153, and the protrusion 1153 is fixedly connected to one end of the arc-shaped driving block 1152. The switching assembly 113 includes an annular sleeve 1131 and a gear ring 1132 fixedly arranged on the side wall of the annular sleeve 1131. A plurality of dehydration units 1133 for recovering metal powder are evenly arranged on the outer wall of the annular sleeve 1131. An annular slider 1134 is fixedly arranged on the inner wall of the annular sleeve 1131. A plurality of through holes 1135 corresponding to the positions of the dehydration units 1133 are evenly opened on the inner wall of the annular slider 1134. Each through hole 1135 is connected to the inside of the dehydration unit 1133 at the corresponding position. An annular frame 1136 is rotatably arranged inside the annular sleeve 1131. The annular frame 1136 is fixedly arranged on the two reinforcing plates 1133. 1, a connecting pipe 1137 is fixedly arranged on the inner wall of the annular frame 1136, and the connecting pipe 1137 and the plurality of through holes 1135 are located on the same circumference. After the connecting pipe 1137 and one of the through holes 1135 are overlapped, the liquid can enter the dehydration unit 1133 at the corresponding position through the connecting pipe 1137 and the through hole 1135; a power unit for driving the gear ring 1132 to rotate is arranged on the inner wall of the annular frame 1136, and the power unit includes a servo motor 1138 fixedly arranged on the inner wall of the annular frame 1136, and a gear 1139 meshingly connected with the gear ring 1132 is fixedly arranged on the output shaft of the servo motor 1138.An annular sliding groove matching the structure of the annular sliding block 1134 is formed on the outer wall of the annular frame 1136, and the annular sliding block 1134 is slidably sleeved in the annular sliding groove.

[0056] Embodiment 3: The main difference between this embodiment and the second technical solution is that: the metal powder slurry cold pressing instant drying device in which waste liquid can be recycled, the dehydration unit 1133 includes a cylinder body 11331 fixedly arranged on the outer wall of the annular sleeve 1131, the top of the cylinder body 11331 is provided with a waste liquid inlet 11332 connected to one of the through holes 1135, and the outer wall opposite to the cylinder body 11331 and the waste liquid inlet 11332 is provided with a metal cake outlet 11333 for discharging the recovered metal powder cake; the inner sides of the cylinder body 11331 are respectively provided with a filter press assembly 1 11334 and a filter press assembly 2 11335, the filter press assembly 11334 includes a mounting plate b1 fixedly mounted on the inner wall of the cylinder body 11331 and a plurality of metal clearing needles b2 evenly fixedly mounted on the side wall of the mounting plate b1, a push rod b6 slidingly penetrates the interior of the mounting plate b1, a filter press cartridge b3 is fixedly mounted on one end of the push rod b6, filter holes b4 evenly arranged on the side wall of the filter press cartridge b3 corresponding to the positions of the plurality of metal clearing needles b2, a hemispherical block 1 is fixedly mounted on one end of the push rod b6 away from the filter press cartridge b3, a spring b7 is provided on the outer wall of the push rod b6 and is located between the annular sleeve 1131 and the hemispherical block as a sliding sleeve. When the push rod b6 is not pushed by the driving ring 1141, the side wall of the filter cartridge b3 away from the mounting plate b1 and one of the side walls of the metal cake outlet 11333 are in the same plane, so that there is no obstacle blocking the metal cake outlet 11333, and the recovered metal powder can be discharged through the metal cake outlet 11333. When the filter cartridge b3 is acted upon by the driving ring 1141, the filter cartridge b3 just completely blocks the metal cake outlet 11333; all the metal dredging needles b2 are always slidably arranged in the filter holes b4 at the corresponding positions on one side of the mounting plate b1. When the push rod b6 is acted upon by the arc-shaped driving block 1141, the metal cake outlet 11333 is completely blocked by the filter cartridge b3. After being pushed by 1142, the filter hole b4 on the side of the filter cartridge b3 relative to the push rod b6 slides off the surface of the metal dredging needle b2, that is, the filter hole b4 separated from the metal dredging needle b2 participates in the work of filtering the metal powder in the wastewater; the filter press assembly 2 11335 includes an extrusion block a1 slidably arranged inside the cylinder body 3 11331, and a push rod a2 is fixedly arranged on the side wall of the extrusion block a1 away from the filter press assembly 1 11334, and a hemispherical block 2 is fixedly arranged on the end of the push rod a2 away from the extrusion block a1, and a spring a3 is provided on the outer wall of the push rod a2 and between the hemispherical block 2 and the outer wall of the annular sleeve 1131. The surface of the extrusion block a1 has no filter hole and is a smooth plane, and the extrusion block a1, the filter cartridge b3 and the inner wall of the cylinder body 3 11331 are all sealed and slidably connected.

[0057] When working, firstly start the hydraulic cylinder 15 to push the dehydration execution unit 16 into the preset position in the cylinder 1121, then start the hydraulic cylinder 28 to push the dehydration execution unit 29 into the preset position in the cylinder 1121, at this time, the drainage hole 2 1122 is located between the sealing ring 1 93 and the sealing ring 2 94 in the dehydration execution unit 2 9, and the drainage hole 3 1123 is located between the sealing ring 1 93 and the sealing ring 2 94 in the dehydration execution unit 1 6;

[0058] In the initial state, one end of the push rod b6 is slidably disposed on the outer wall of the arc-shaped driving block 1142, and due to the push of the arc-shaped driving block 1142, the filter cartridge b3 is pushed toward the extrusion block a1, and the metal cake outlet 11333 is completely blocked by the filter cartridge b3, while the extrusion block a1 and the end of the arc-shaped driving block 1152 away from the protrusion 1153 are against each other, and have a tendency to continue to climb toward the surface of the arc-shaped driving block 1152;

[0059] Then, one end of the feed pipe 10 is connected to the output port of the metal powder slurry pump, and the input port of the metal powder slurry pump is connected to the metal powder slurry storage tank through a pipeline. The metal powder slurry pump extracts the metal powder slurry, and inputs the metal powder slurry through the feed pipe 10 into the closed space formed by the dehydration execution unit 1 6, the dehydration execution unit 2 9 and the feed pipe 10. The amount of the input metal powder slurry is observed by the flow meter set in the feed pipe 10, and the metal powder slurry pump is turned off after the amount of the metal powder slurry reaches a preset amount;

[0060] Next, hydraulic cylinder 1 5 and hydraulic cylinder 2 8 are controlled to move toward each other a preset distance at the same time. At the same time, dehydration execution unit 1 6 and dehydration execution unit 2 9 are moved toward each other under the push of hydraulic cylinder 1 5 and hydraulic cylinder 2 8, and the metal powder slurry located between the two is squeezed at the same time. It should be noted that the moving distance of dehydration execution unit 1 6 and dehydration execution unit 2 9 can always ensure that drainage hole 2 1122 is located between sealing ring 1 93 and sealing ring 2 94 in dehydration execution unit 2 9, and drainage hole 3 1123 is located between sealing ring 1 93 and sealing ring 2 94 in dehydration execution unit 1 6; the water in the metal powder slurry is separated from the metal powder under the action of the extrusion force, and the formed wastewater enters into the cylinder 1 91 through the filter plate 92, while most of the metal powder is retained between dehydration execution unit 2 9 and dehydration execution unit 2 9 The dehydrated metal powder forms a round cake shape in the space between the two cylinders; since the plurality of drainage holes 195 are located between the sealing ring 193 and the sealing ring 294, and the sealing ring 193, the sealing ring 294 and the inner wall of the cylinder 2 1121 are all sealed and slidingly connected, the waste water flows out through the plurality of drainage holes 195 in the dehydration execution unit 16 and the dehydration execution unit 29, and then enters the drainage pipe 1124 through the drainage holes 3 1123 and the drainage holes 2 1122. At this time, there is just a dehydration unit 1133 located directly below the cylinder 2 1121, and the through hole 1135 corresponding to the through hole 1135 is just connected to the connecting pipe 1137. Since the connecting pipe 1137 is connected to the drainage pipe 1124, the waste water enters the dehydration unit 1133 located at the bottom through the drainage pipe 1124;

[0061] Next, the hydraulic cylinder 1 5 pulls the dehydration execution unit 1 6 to move away from the dehydration execution unit 2 9 until it returns to its original position. At this time, the two hydraulic cylinders 3 12 simultaneously pull the reinforcing plate 3 111 to move toward the power box 2 2 until the filter plate 92 is exposed to the outside of the cylinder 2 1121. The metal powder cake formed inside the cylinder 2 1121 loses the bearing capacity of the cylinder 2 1121 and falls under its own gravity. The metal powder cake just falls into the metal powder cake collecting cylinder provided in the middle area between the power box 1 1 and the power box 2 2. After the powder cake collecting cylinder completes the collection work, it moves away from the middle area between the power box 1 1 and the power box 2 2, completing the preliminary cold pressing and drying operation of the metal powder slurry.

[0062] Then, the next cold pressing and drying operation of the metal powder slurry is carried out, the hydraulic cylinder 1 5 drives the dehydration execution unit 1 6 to move towards the direction close to the dehydration execution unit 2 9 until it reaches the preset position, and the hydraulic cylinder 3 12 pushes the secondary dehydration mechanism 11 to reset, and then a certain amount of metal powder slurry is injected into the closed space formed by the dehydration execution unit 1 6, the dehydration execution unit 2 9 and the cylinder 2 1121 through the feeding pipe 10 again;

[0063] Before cold pressing the metal powder slurry again, the servo motor 1138 is started through the control box. Since the servo motor 1138 is controlled by a program, it stops running after each rotation of a preset angle. Since a locking mechanism is provided on the output shaft of the servo motor 1138, the locking mechanism can release the lock of the output shaft of the servo motor 1138 when the servo motor 1138 is running, and can immediately complete the locking of the output shaft of the servo motor 1138 when the servo motor 1138 stops running. The preset angle enables the two adjacent dehydration units 1133 to accurately exchange positions; the servo motor 1138 drives the gear 113 9 drives the gear ring 1132 to rotate at a preset angle, so that the two adjacent dehydration units 1133 exchange positions. After the next dehydration unit 1133 enters this position, the waste liquid inlet 11332 on its outer wall and the annular slider 1134 and the connecting pipe 1137 at the relative position are connected; at the same time, in the process of the position exchange of the two adjacent dehydration units 1133, the push rod b6 in the filter press assembly 1 11334 continues to slide along the surface of the arc-shaped driving block 1 142, and the push rod a2 climbs along the slope at one end of the arc-shaped driving block 1152, The push rod a2 pushes the extrusion block a1 toward the filter cartridge b3 under the action of the arc-shaped driving block 1152 until a gap of preset width appears between the opposite side walls of the filter cartridge b3 and the extrusion block a1. The gap is used to provide space for the metal powder remaining in the wastewater to form a metal powder cake. The size of the space can be adjusted according to actual use requirements and can just meet the requirements of extruding the metal powder remaining in the wastewater into a metal cake. For example, by adjusting the length of the push rod a2 or replacing the arc-shaped driving block 1152 of different thicknesses, the filter cartridge b3 and the extrusion block a1 can be made closer. The size of the gap between the opposite side walls is changed to become the required width; after the wastewater between the filter press cartridge b3 and the extrusion block a1 is squeezed, the water enters the filter press cartridge b3 through the filter hole b4 on the outer wall surface of the filter press cartridge b3 away from the second push rod b6, and then is discharged through the drainage port b5 at the bottom of the filter press cartridge b3. Since the drainage port b5 is located in the metal cake outlet 11333 at this time, the squeezed water continues to flow into the filtrate collection cylinder arranged directly below it through the metal cake outlet 11333. The filtrate collection cylinder is placed for the later treatment of metal powder slurry;

[0064] When the end of the push rod b6 in one of the dehydration units 1133 enters the area between the two ends of the driving ring 1141, the push rod b6 loses the pushing effect of the arc-shaped driving block 1142, and the elastic force of the spring b7 pushes the push rod b6 to move toward the mounting plate b1, and all the metal clearing needles b2 completely pass through the filter holes b4 at the corresponding positions, pushing out the impurities blocked in the filter holes b4. At this time, the position of the metal cake outlet 11333 is completely exposed; then, the push rod a2 climbs from the low point to the highest point along the outer wall of the protrusion 1153, and the extrusion block a1 continues to slide toward the direction of the filter press b3 until the end face of the extrusion block a1 close to the filter press b3 and one of the side walls of the metal cake outlet 11333 are on the same plane. At the same time, the metal powder cake extruded into a cake shape is pushed to the metal cake outlet 11333 and falls under its own gravity, completing the secondary collection of the metal powder in the metal powder slurry.

[0065] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal powder slurry cold pressing instant drying device capable of recycling waste liquid, characterized in that: include: A support frame assembly, used for providing support for the cold pressing and drying operation of metal powder slurry, comprising a power box 1 (1) and a power box 2 (2) arranged opposite to each other on the left and right sides, three support rods (3) are arranged in a triangular shape on the opposite side walls of the power box 1 (1) and the power box 2 (2), and a reinforcing plate 1 (4) and a reinforcing plate 2 (7) are respectively slidably sleeved on the left and right sides of the outer walls of the three support rods (3); A primary dehydration mechanism, comprising a first dehydration actuator and a second dehydration actuator, which are used to cooperate with each other to complete the cold pressing and drying of the metal powder slurry; A secondary dehydration mechanism (11) is slidably sleeved on the outer walls of the plurality of support rods (3) and is used to recover the metal powder remaining in the wastewater after the metal powder slurry is separated, thereby completing the separation of the wastewater and the residual metal powder; The secondary dehydration mechanism (11) comprises two reinforcing plates (111) slidably sleeved together on the outer walls of the three support rods (3) and a dehydration cylinder assembly (112) arranged inside the two reinforcing plates (111), the outer portion of the dehydration cylinder assembly (112) being sleeved with a switching assembly (113) for recovering residual metal powder in the wastewater, and a driving assembly (114) and a driving assembly (115) being fixedly arranged on the outer walls of the two reinforcing plates (111) via support arms, respectively, for providing a driving force for the switching assembly (113) to recover the residual metal powder; The dehydration cylinder assembly (112) comprises a cylinder body 2 (1121) fixedly arranged inside two reinforcing plates 3 (111), a drainage hole 2 (1122) and a drainage hole 3 (1123) are respectively opened on both sides of the inner wall of the cylinder body 2 (1121), and a drainage pipe (1124) is fixedly arranged on the outer wall of the cylinder body 2 (1121), and the drainage pipe (1124) is respectively connected to the drainage hole 2 (1122) and the drainage hole 3 (1123) through a branch pipe; The driving assembly 1 (114) comprises a driving ring 1 (1141) and an arc-shaped driving block 1 (1142) fixedly arranged on the side wall of the driving ring 1 (1141), and both ends of the arc-shaped driving block 1 (1142) are provided with chamfers; The second driving assembly (115) comprises a second driving ring (1151), a second arc-shaped driving block (1152) fixedly arranged on the side wall of the second driving ring (1151), and a protrusion (1153), wherein the protrusion (1153) is fixedly connected to one end of the second arc-shaped driving block (1152); The switching assembly (113) comprises an annular sleeve (1131) and a toothed ring (1132) fixedly arranged on the side wall of the annular sleeve (1131); a plurality of dehydration units (1133) for recovering metal powder are evenly arranged on the outer wall of the annular sleeve (1131); an annular slider (1134) is fixedly arranged on the inner wall of the annular sleeve (1131); a plurality of through holes (1135) corresponding to the positions of the dehydration units (1133) are evenly opened on the inner wall of the annular slider (1134); each through hole (1135) is connected to the inside of the dehydration unit (1133) at the corresponding position; An annular frame (1136) is rotatably disposed inside the annular sleeve (1131), and a connecting pipe (1137) is fixedly disposed on the inner wall of the annular frame (1136). The connecting pipe (1137) and the plurality of through holes (1135) are located on the same circumference. When the connecting pipe (1137) and one of the through holes (1135) are aligned, liquid can enter the dehydration unit (1133) at the corresponding position through the connecting pipe (1137) and the through hole (1135); A power unit for driving the gear ring (1132) to rotate is arranged on the inner wall of the annular frame (1136), and the power unit comprises a servo motor (1138) fixedly arranged on the inner wall of the annular frame (1136), and a gear (1139) meshingly connected with the gear ring (1132) is fixedly arranged on the output shaft of the servo motor (1138); The dehydration unit (1133) comprises a cylinder body (11331) fixedly arranged on the outer wall of the annular sleeve (1131); a waste liquid inlet (11332) connected to one of the through holes (1135) is provided on the top of the cylinder body (11331); a metal cake outlet (11333) is provided on the outer wall of the cylinder body (11331) opposite to the waste liquid inlet (11332) for discharging the recovered metal powder cake; The inner sides of the cylinder body 3 (11331) are respectively provided with a filter press component 1 (11334) and a filter press component 2 (11335), the filter press component 1 (11334) comprises a mounting plate (b1) fixedly arranged on the inner wall of the cylinder body 3 (11331) and a plurality of metal dredging needles (b2) evenly fixedly arranged on the side wall of the mounting plate (b1), a push rod 2 (b6) slidingly penetrates the inner side of the mounting plate (b1), a filter press cartridge (b3) is fixedly arranged on one end of the push rod 2 (b6), and filter holes (b4) evenly arranged on the side wall of the filter press cartridge (b3) corresponding to the positions of the plurality of metal dredging needles (b2) are evenly opened, a hemispherical block 1 is fixedly arranged on one end of the push rod 2 (b6) away from the filter press cartridge (b3), and a spring 2 (b7) is provided on the outer wall of the push rod 2 (b6) and the sliding sleeve is located between the annular sleeve (1131) and the hemispherical block; The filter press assembly 2 (11335) includes an extrusion block (a1) slidably arranged inside the cylinder body 3 (11331), a push rod 1 (a2) is fixedly arranged on the side wall of the extrusion block (a1) away from the filter press assembly 1 (11334), a hemispherical block 2 is fixedly arranged on one end of the push rod 1 (a2) away from the extrusion block (a1), and a spring 1 (a3) ​​is provided on the outer wall of the push rod 1 (a2) and is located between the hemispherical block 2 and the outer wall of the annular sleeve (1131).

2. The metal powder slurry cold pressing instant drying device capable of recycling waste liquid according to claim 1 is characterized in that: The dehydration actuator mechanism 1 comprises a hydraulic cylinder 1 (5) fixedly arranged inside the power box 1 (1); an end of the hydraulic cylinder 1 (5) away from the power box 1 (1) penetrates the reinforcing plate 1 (4) and is provided with a dehydration actuator unit 1 (6); The second dehydration actuator comprises a second hydraulic cylinder (8) fixedly arranged inside the second power box (2); the output end of the second hydraulic cylinder (8) passes through the second reinforcing plate (7) and is fixedly provided with a second dehydration actuator unit (9).

3. The metal powder slurry cold pressing instant drying device capable of recycling waste liquid according to claim 2 is characterized in that: The invention also comprises a feed pipe (10) fixedly arranged at the bottom of the second hydraulic cylinder (8), wherein the feed pipe (10) penetrates the second dehydration execution unit (9) and extends into the space between the first dehydration execution unit (6) and the second dehydration execution unit (9), and is used to transport metal powder slurry into the closed space formed by the first dehydration execution unit (6), the second dehydration execution unit (9) and the secondary dehydration mechanism (11), and a flow meter and a one-way valve are fixedly arranged inside the feed pipe (10), and the flow meter is used to measure the input liquid. The one-way valve is used to only allow the metal powder slurry to flow from the inlet of the feed pipe (10) into the area between the dehydration execution unit 1 (6) and the dehydration execution unit 2 (9). Hydraulic cylinders 3 (12) are symmetrically arranged inside the power box 2 (2) and on both sides of the hydraulic cylinder 2 (8). The output ends of the two hydraulic cylinders 3 (12) both slide through the power box 2 (2) and are connected to the secondary dehydration mechanism (11).

4. The metal powder slurry cold pressing instant drying device capable of recycling waste liquid according to claim 2 is characterized in that: The structures of the dehydration execution unit 1 (6) and the dehydration execution unit 2 (9) are completely the same. The dehydration execution unit 2 (9) comprises a cylinder body 1 (91) and a filter plate (92) fixedly arranged at the end of the cylinder body 1 (91). The outer wall of the filter plate (92) is respectively fixedly sleeved with a sealing ring 1 (93) and a sealing ring 2 (94). An annular groove is formed between the sealing ring 1 (93) and the sealing ring 2 (94). A plurality of drainage holes 1 (95) are evenly arranged on the outer wall of the cylinder body 1 (91) and located in the annular groove.

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