Separation equipment and method for preparing graphene nano palladium crystal particles

Abstract

The invention relates to the technical field of palladium nanoparticle preparation, liquid drainage long and thin grooves are uniformly formed in the edge end of a built-in rotary drum at equal angles in the vertical direction of the built-in rotary drum, centrifugal telescopic filter cloth is arranged on the inner side of the built-in rotary drum, a balance weight chassis is arranged at the bottom end of the centrifugal telescopic filter cloth, and an edge ring is mounted at the edge end of the balance weight chassis; a plurality of groups of elastic steel wires are connected to the edge of the centrifugal telescopic filter cloth in an embedded manner, so that the effective usable area of the centrifugal telescopic filter cloth is automatically expanded according to the adding amount of actual precipitates, the centrifugal telescopic filter cloth is convenient to adaptively adjust, and the use efficiency of the centrifugal telescopic filter cloth is improved; meanwhile, the centrifugal telescopic filter cloth is used for driving the folding filter cloth to be stretched in the top ring box, so that the filter area of the centrifugal telescopic filter cloth can be automatically expanded when a large amount of sediment materials exist, flexible adjustment is performed according to the actual treatment amount of the sediment materials, convenience is provided for the subsequent cleaning process while the centrifugal separation effect is guaranteed, and the working efficiency is improved. And the centrifugal separation process is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of palladium nanoparticle preparation, and in particular to separation equipment and a method for preparing graphene nano-palladium crystal particles. Background Art

[0002] Highly dispersed graphene nano-palladium crystal particles refer to a composite material in which nano-palladium crystals are uniformly dispersed on graphene nanosheets. This material combines the excellent properties of graphene and the high catalytic activity of palladium metal, and has broad application prospects. For example, in the fields of catalysis, energy storage and conversion, graphene as a carrier can promote the uniform distribution of nano-palladium crystals and improve the overall performance and stability of the catalyst. At present, in the preparation process of graphene nano-palladium crystal particles, a Chinese patent discloses a preparation method of highly dispersed graphene nano-palladium crystal particles, and the application number is: 202111329572.0. In this preparation method, after the black precipitate is obtained after the metal PdII ion loading and reduction, the black precipitate needs to be centrifuged by a centrifugal separation device; In the process of centrifugal separation of materials, current separation equipment generally separates materials by combining filter cloth with centrifugal barrel, but fails to reasonably select the use area of ​​filter cloth according to the actual separation amount of materials. As a result, when the separation amount of materials is small, the materials will be disorderly dispersed and attached to the filter cloth with too large an area, thereby making the subsequent material collection and cleaning process difficult. At the same time, it also reduces the subsequent effective use area of ​​the filter cloth, thereby affecting the subsequent separation effect. Summary of the invention

[0003] 1. Technical issues to be resolved In view of the shortcomings of the prior art, the present invention provides a separation device and method for preparing graphene nano-palladium crystal particles, which solves the problem that the current separation equipment generally separates materials by matching filter cloth with a centrifugal barrel during the centrifugal separation of materials, but cannot reasonably select the use area of ​​the filter cloth according to the actual separation amount of the material, resulting in that when the material separation amount is small, the material will be disorderly dispersed and attached to the filter cloth with too large an area, thereby making the subsequent material collection and cleaning process difficult, and also reducing the subsequent effective use area of ​​the filter cloth, thereby affecting the subsequent separation effect.

[0004] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a separation device for preparing graphene nano-palladium crystal particles, comprising a centrifugal cylinder, a top cover is connected to the top of the centrifugal cylinder, and a feed pipe is connected to the middle end of the top of the top cover, the top of the centrifugal cylinder and the top cover are detachably connected through a connecting flange, each side end of the bottom of the centrifugal cylinder is fixedly connected to a support rod, and a rotating motor is installed on the inner side of the support rod through a motor seat, an accumulation groove is opened along the annular direction at the inner bottom of the centrifugal cylinder, and a discharge pipe is connected to the bottom side end of the centrifugal cylinder corresponding to the accumulation groove, the top output end of the rotating motor is connected to a transmission shaft, and the top of the transmission shaft is located at the inner side of the centrifugal cylinder and is fixedly connected to a built-in rotating cylinder; The edge of the built-in rotating drum is evenly provided with long and thin grooves for drainage at equal angles along its vertical direction; a centrifugal telescopic filter cloth is arranged on the inner side of the built-in rotating drum; a counterweight chassis is arranged on the bottom end of the centrifugal telescopic filter cloth, and an edge ring is installed on the edge of the counterweight chassis; a plurality of groups of elastic steel wires are embedded and connected to the edge of the centrifugal telescopic filter cloth; a top ring box is arranged on the top of the built-in rotating drum; a folded filter cloth is placed on the inner side of the top ring box in a folded manner; the folded filter cloth is connected to the top of the centrifugal telescopic filter cloth; and a tensile fine spring is connected at equal angles to the edge of the edge ring at the outer side of the centrifugal telescopic filter cloth; The outer edge of the built-in rotating drum is installed with a mounting strip at equal angles along its vertical direction, and the edge of the mounting strip is equidistantly connected with a plurality of groups of adsorption magnetic rings along the horizontal direction of the built-in rotating drum, and the edge of the edge ring is connected with sliding magnetic blocks at equal angles at the corresponding positions of the mounting strip.

[0005] As a preferred technical solution for the separation equipment for preparing graphene nano-palladium crystal particles of the present invention, a stretching groove is provided at the bottom of the top ring box, and the centrifugal telescopic filter cloth pulls the folded filter cloth to unfold, and the centrifugal telescopic filter cloth can be telescoped along its vertical direction, and the centrifugal telescopic filter cloth can be quickly reset by the elastic steel wire and the stretching fine spring at its edge.

[0006] As a preferred technical solution for the separation equipment for preparing graphene nano-palladium crystal particles of the present invention, the adsorption magnetic ring is an electromagnetic ring, and several groups of adsorption magnetic rings on the edge of the mounting strip are controlled by a separate power control method, and the sliding magnetic block and the adsorption magnetic ring at its corresponding position are limitedly connected by magnetic means.

[0007] As a preferred technical solution of the separation equipment for preparing graphene nano-palladium crystal particles of the present invention, the inner side end of the top cover is fixedly connected with a bracket, the center position of the bracket is rotatably connected with a rotating shaft through a bearing seat, the side end of the rotating shaft is provided with spiral driving blades along the spiral direction, the bottom end of the rotating shaft is connected with a connecting rod in an extended manner, the end of the connecting rod is connected with a connecting seat, and the connecting rod is connected with a scraper through the connecting seat at its end, and the bottom end of the top cover is connected with a concentrating cylinder.

[0008] As a preferred technical solution for the separation equipment for preparing graphene nano-palladium crystal particles of the present invention, the rotating shaft drives the spiral driving blade to rotate in the middle of the bracket, and the edge of the spiral driving blade contacts the inner wall of the top cover.

[0009] As an optimal technical solution for the separation equipment for preparing graphene nano-palladium crystal particles of the present invention, the rotating shaft drives the connecting rod and the scraper to rotate synchronously, and the cross-sectional shape of the scraper is consistent with the cross-sectional shape of the concentrating cylinder, and the scraper rotates along the inner wall of the concentrating cylinder.

[0010] As a preferred technical solution of a separation device for preparing graphene nano-palladium crystal particles of the present invention, a feed tray is fixedly connected to the bottom end of the centralizing cylinder, a through hole is opened inside the feed tray, a feed control pipe is connected to the bottom end of the feed tray at the edge of the through hole, a discharge groove is opened at the four side ends of the bottom of the feed control pipe, and a supporting thin spring is embedded and installed at the inner bottom of the feed control pipe; The inner top of the material control tube is connected to a material receiving barrel at the top of the supporting fine spring, and the four side ends of the top of the material receiving barrel are provided with drop grooves, and the top surface of the feed tray is provided with a sealing rubber ring at the edge of the through hole.

[0011] As a preferred technical solution for the separation equipment for preparing graphene nano-palladium crystal particles of the present invention, the material receiving barrel performs a lifting and lowering movement along the inner wall of the material control tube, and the sealing rubber ring blocks the top of the material receiving barrel, so that the material at the bottom of the concentrating barrel can completely enter the material receiving barrel.

[0012] As a preferred technical solution for separation equipment for preparing graphene nano-palladium crystal particles of the present invention, a accommodating groove is provided at the inner bottom of the receiving barrel, the position of the drop groove corresponds to the position of the discharge groove, and the groove widths of the drop groove and the discharge groove are equal.

[0013] A separation method for preparing graphene nano-palladium crystal particles comprises the following steps: Step 1: After the metal PdII ions are loaded and reduced to obtain a black precipitate, the black precipitate needs to be fed into a centrifugal cylinder through a feed pipe for centrifugal separation. When the black precipitate enters the centrifugal cylinder, the spiral blades are driven to rotate by the gravity of the falling precipitate material, so as to facilitate effective mixing treatment, so that the components inside the precipitate material are fully dispersed, and the impact pressure when the precipitate material enters is prevented from causing subsequent impact on the centrifugal telescopic filter cloth; Step 2: According to the weight of the sedimentation material, the downward position of the receiving cylinder is adjusted, so that the sedimentation material enters the built-in rotating cylinder through the overlapping position between the drop chute and the discharge chute, so that the inlet port is adjusted according to the amount of material entering, and the maximum amount of material entering is controlled to avoid a large amount of sedimentation material entering at a time, which reduces the filtering effect; Step 3: The counterweight chassis and the centrifugal telescopic filter cloth are driven to expand and contract by the sedimentation material, so that the centrifugal telescopic filter cloth can automatically expand its effective use area according to the actual amount of sediment added, so that when there is a lot of sedimentation material, the filtration area of ​​the centrifugal telescopic filter cloth can be automatically expanded, so that the centrifugal telescopic filter cloth has a higher use efficiency; Step 4: During centrifugal filtration, the built-in drum is driven to rotate in the centrifugal drum by rotating the motor and the transmission shaft, and the sediment is centrifugally separated by the long and thin drainage groove and the centrifugal telescopic filter cloth. The filtrate is discharged and collected through the storage tank and the discharge pipe; Step 5: Wash the collected filtrate and then freeze-dry it to obtain highly dispersed graphene nano-palladium crystal particles.

[0014] (III) Beneficial effects Compared with the prior art, the present invention provides a separation device and method for preparing graphene nano-palladium crystal particles, which has the following beneficial effects: 1. Through the counterweight chassis, side ring, elastic steel wire, top ring box, folded filter cloth and stretching fine spring, after the sediment material is added into the centrifugal telescopic filter cloth, the counterweight chassis can be driven to rise and fall according to the total weight of the added amount of the sediment material, and the centrifugal telescopic filter cloth can be further driven to perform telescopic activities. At the same time, the elastic steel wire and the stretching fine spring will be synchronously extended with the expansion and contraction of the centrifugal telescopic filter cloth. After the material inside the centrifugal telescopic filter cloth is separated, the centrifugal telescopic filter cloth can be automatically folded and contracted through the resetting effect of the elastic steel wire and the stretching fine spring, so that the centrifugal telescopic filter cloth can automatically expand its effective use area according to the actual amount of sediment added, facilitate adaptive adjustment, and improve the use efficiency of the centrifugal telescopic filter cloth. At the same time, the centrifugal telescopic filter cloth is used to drive the folded filter cloth to stretch in the top ring box, so that when there is a lot of sediment material, the filtration area of ​​the centrifugal telescopic filter cloth can be automatically expanded, and it is convenient to flexibly adjust according to the actual processing amount of the sediment material, while ensuring the centrifugal separation effect, it provides convenience for the subsequent cleaning process, making the centrifugal separation process more convenient.

[0015] 2. Through the mounting strip and adsorption magnetic ring on the edge of the built-in drum, and the sliding magnetic block on the edge of the side ring, after the counterweight chassis slides to a stable position, the adsorption magnetic ring is energized to facilitate the stable adsorption of the sliding magnetic block, thereby limiting the sliding position of the counterweight chassis, thereby ensuring that the centrifugal telescopic filter cloth can be stably centrifugally rotated with the built-in drum, thereby improving the separation effect of the sedimentation material therein; Furthermore, by individually controlling the adsorption magnetic rings at corresponding positions, the sliding magnetic block can be driven to move for adsorption through the change in magnetism of the adsorption magnetic rings at different positions, and the sliding magnetic block can be lifted and lowered reciprocatingly during the adsorption and movement process through the reciprocating change in magnetism of the adsorption magnetic rings, thereby facilitating the sliding magnetic block to drive the centrifugal telescopic filter cloth to shake back and forth, so that the material attached to the edge of the centrifugal telescopic filter cloth can be quickly collected to the bottom of the centrifugal telescopic filter cloth under the action of shaking, thereby facilitating the convenient cleaning of the centrifugal telescopic filter cloth.

[0016] 3. Through the bracket, rotating shaft and spiral driving blade arranged on the inner side of the top cover, when the sedimentation material is added to the centrifugal drum, the sedimentation material can fall from the top of the centrifugal drum to the bottom, and the spiral driving blade is driven to rotate by the gravity of the falling sedimentation material, and the spiral driving blade is rotated along the straight section of the top cover, so that the sedimentation material needs to be transported by the spiral driving blade before entering the built-in rotating drum, which is convenient for the spiral driving blade to drive the sedimentation material to rotate synchronously, and is convenient for effectively mixing the sedimentation material before centrifugal separation, so that the various components inside the sedimentation material are fully dispersed, so as to facilitate better centrifugal separation later, and at the same time reduce the pressure of the sedimentation material when entering, so that the sedimentation material enters more slowly later, and avoids the impact pressure of the sedimentation material when entering. The impact on the centrifugal telescopic filter cloth is subsequently caused, resulting in deformation and damage of the centrifugal telescopic filter cloth, affecting its actual filtering effect; When the spiral drives the blades to rotate, it is convenient to synchronously drive the connecting rod, the connecting seat and the scraper to rotate, so that the scraper can scrape off the sediment material attached to the inner wall of the concentrating tube through the contact between the scraper and the inner wall of the concentrating tube, avoiding waste caused by the adhesion and accumulation of sediment material.

[0017] 4. The multiple through holes opened inside the feed tray facilitate the delivery of the sedimentation material to the built-in rotating drum in a multi-channel manner, and the material control structure composed of the material control tube, the discharge trough, the supporting fine spring, the material receiving tube, the descending trough and the sealing rubber ring can make the sedimentation material enter the material control tube first when the sedimentation material enters, and the material receiving tube is driven downward based on the weight of the material, so that the supporting fine spring contracts, so as to facilitate the adjustment of the downward position of the material receiving tube according to the weight of the material, and further adjust the overlap size between the descending trough and the discharge trough, so that the material can conveniently enter the built-in rotating drum through the overlap position between the descending trough and the discharge trough, and realize the adjustment of the inlet according to the amount of material entering, so that the inlet is automatically opened and closed. At the same time, this material control method can also control the maximum amount of material entering, to avoid a large amount of sedimentation material entering at a single time, which reduces the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a cross-sectional view of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the built-in rotating drum of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the centrifugal telescopic filter cloth of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the spiral driven blade of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the scraper of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the material control pipe of the present invention.

[0025] Figure 8 It is a flow chart of the steps of the preparation method of the present invention.

[0026] In the figure: 1. centrifugal cylinder; 2. feed pipe; 3. top cover; 4. connecting flange; 5. support rod; 6. rotating motor; 7. storage tank; 8. discharge pipe; 9. transmission shaft; 10. built-in drum; 11. long and thin drainage groove; 12. centrifugal telescopic filter cloth; 13. counterweight chassis; 14. side ring; 15. elastic steel wire; 16. top ring box; 17. folded filter cloth; 18. stretching fine spring; 19. mounting strip; 20. adsorption magnetic ring; 21. sliding magnetic block; 22. bracket; 23. rotating shaft; 24. spiral drive blade; 25. connecting rod; 26. connecting seat; 27. scraper; 28. concentrating cylinder; 29. ​​feed tray; 30. through hole; 31. material control pipe; 32. discharge trough; 33. supporting fine spring; 34. receiving cylinder; 35. landing chute; 36. sealing rubber ring. DETAILED DESCRIPTION

[0027] 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. Example

[0028] See also Figure 1-7The present invention provides the following technical solutions: a separation device for preparing graphene nano-palladium crystal particles, comprising a centrifugal cylinder 1, a top cover 3 is connected to the top of the centrifugal cylinder 1, and a feed pipe 2 is connected to the middle end of the top of the top cover 3, the top of the centrifugal cylinder 1 and the top cover 3 are detachably connected through a connecting flange 4, each side end of the bottom of the centrifugal cylinder 1 is fixedly connected to a support rod 5, and a rotating motor 6 is installed on the inner side of the support rod 5 through a motor seat, an accumulation groove 7 is opened along the annular direction at the bottom of the inner side of the centrifugal cylinder 1, and a discharge pipe 8 is connected to the bottom side of the centrifugal cylinder 1 corresponding to the accumulation groove 7, a transmission shaft 9 is connected to the top output end of the rotating motor 6, and the top of the transmission shaft 9 is located at the inner side of the centrifugal cylinder 1 and is fixedly connected to a built-in rotating cylinder 10; The edge of the built-in drum 10 is evenly provided with long and thin grooves 11 for drainage at equal angles along the vertical direction thereof, the inner side of the built-in drum 10 is provided with a centrifugal telescopic filter cloth 12, the bottom end of the centrifugal telescopic filter cloth 12 is provided with a counterweight chassis 13, and the edge end of the counterweight chassis 13 is installed with a side ring 14, the edge of the centrifugal telescopic filter cloth 12 is embedded and connected with a plurality of groups of elastic steel wires 15, the top of the built-in drum 10 is provided with a top ring box 16, the inner side of the top ring box 16 is placed with a folded filter cloth 17 in a folded manner, the folded filter cloth 17 is connected to the top of the centrifugal telescopic filter cloth 12, and the side ring 14 is installed with a counterweight chassis 13. The edge of the centrifugal telescopic filter cloth 12 is located at the outer side of the centrifugal telescopic filter cloth 12 and is connected with a tension spring 18 at an equal angle. A tension groove is provided at the bottom of the top ring box 16. The centrifugal telescopic filter cloth 12 pulls the folded filter cloth 17 to expand, and the centrifugal telescopic filter cloth 12 can be expanded and retracted along its vertical direction. The centrifugal telescopic filter cloth 12 can be quickly reset through the elastic steel wire 15 and the tension spring 18 at its edge, which is convenient for automatically expanding the effective use area of ​​the centrifugal telescopic filter cloth 12 according to the actual amount of sediment added, which is convenient for adaptive adjustment and improves the use efficiency of the centrifugal telescopic filter cloth 12. The outer edge of the built-in rotating drum 10 is installed with a mounting strip 19 at equal angles along its vertical direction, and the edge of the mounting strip 19 is equidistantly connected with several groups of adsorption magnetic rings 20 along the horizontal direction of the built-in rotating drum 10. The edge of the side ring 14 is equiangularly connected with a sliding magnetic block 21 at the corresponding position of the mounting strip 19. The adsorption magnetic ring 20 is an electromagnetic ring, and the several groups of adsorption magnetic rings 20 on the edge of the mounting strip 19 are controlled by a separate power control method. The sliding magnetic block 21 and the adsorption magnetic ring 20 at the corresponding position are limitedly connected by magnetic means. The adsorption magnetic ring 20 is energized to facilitate the stable adsorption of the sliding magnetic block 21, thereby realizing the limited sliding position of the counterweight chassis 13.

[0029] The inner side end of the top cover 3 is fixedly connected with a bracket 22, and the center position of the bracket 22 is rotatably connected with a rotating shaft 23 through a bearing seat. The side end of the rotating shaft 23 is provided with a spiral driving blade 24 along the spiral direction. The rotating shaft 23 drives the spiral driving blade 24 to rotate in the middle of the bracket 22, and the edge of the spiral driving blade 24 contacts the inner wall of the top cover 3, so that the sedimentation material needs to be transported by the spiral driving blade 24 before entering the built-in rotating drum 10, which is convenient for the spiral driving blade 24 to drive the sedimentation material to rotate synchronously, and is convenient for effectively mixing the sedimentation material before centrifugal separation. A connecting rod 25 is connected in an extended manner, and a connecting seat 26 is connected to the end of the connecting rod 25, and the connecting rod 25 is connected to a scraper 27 through the connecting seat 26 at its end. The bottom end of the top cover 3 is connected to a concentrating tube 28, and the rotating shaft 23 drives the connecting rod 25 and the scraper 27 to rotate synchronously, and the cross-sectional shape of the scraper 27 is consistent with the cross-sectional shape of the concentrating tube 28, and the scraper 27 rotates along the inner wall of the concentrating tube 28. Through the contact between the scraper 27 and the inner wall of the concentrating tube 28, the scraper 27 can scrape off the sedimentation material attached to the inner wall of the concentrating tube 28, so as to avoid waste caused by adhesion and accumulation of sedimentation materials.

[0030] The bottom end of the centralizing cylinder 28 is fixedly connected with a feed tray 29, and a through hole 30 is opened inside the feed tray 29. The bottom end of the feed tray 29 is located at the edge of the through hole 30 and is connected with a control pipe 31. The four sides of the bottom of the control pipe 31 are all provided with a discharge groove 32, and a supporting thin spring 33 is embedded and installed at the inner bottom of the control pipe 31. The top of the inner side of the material control tube 31 is connected to a material receiving barrel 34 at the top position of the supporting fine spring 33. The material receiving barrel 34 is lifted and lowered along the inner wall of the material control tube 31. The sealing rubber ring 36 blocks the top of the material receiving barrel 34, so that the material at the bottom of the concentrating tube 28 can completely enter the material receiving barrel 34. The material weight drives the material receiving barrel 34 to move downward, so that the supporting fine spring 33 contracts, so as to facilitate the adjustment of the downward position of the material receiving barrel 34 according to the weight of the material. A drop groove 35 is provided at the side ends, and a receiving groove is provided at the inner bottom of the receiving barrel 34. The drop groove 35 corresponds to the position of the discharge groove 32, and the groove width of the drop groove 35 is equal to that of the discharge groove 32, so that the material can easily enter the built-in rotating drum 10 through the overlapping position between the drop groove 35 and the discharge groove 32, and the entrance port can be adjusted according to the amount of material entering. A sealing rubber ring 36 is provided at the edge of the through hole 30 on the top surface of the feed tray 29.

[0031] like Figure 8 As shown, a separation method for preparing graphene nano-palladium crystal particles comprises the following steps: Step 1: After the metal PdII ions are loaded and reduced to obtain a black precipitate, the black precipitate needs to be fed into the centrifugal drum 1 through the feed pipe 2 for centrifugal separation. When the black precipitate enters the centrifugal drum 1, the spiral driving blade 24 is driven to rotate by the gravity of the falling precipitate material, so as to facilitate effective mixing treatment, so that the components inside the precipitate material are fully dispersed, and the impact pressure when the precipitate material enters is prevented from causing subsequent impact on the centrifugal telescopic filter cloth 12; Step 2: According to the weight of the sedimentation material, the downward position of the receiving cylinder 34 is adjusted, so that the sedimentation material enters the built-in rotating cylinder 10 through the overlapping position between the drop chute 35 and the discharge chute 32, so that the inlet port is adjusted according to the amount of material entering, and the maximum amount of material entering is controlled to avoid a large amount of sedimentation material entering at a time, which reduces the filtering effect; Step 3: The counterweight chassis 13 and the centrifugal telescopic filter cloth 12 are driven to expand and contract by the sedimentation material, so that the centrifugal telescopic filter cloth 12 can automatically expand its effective use area according to the actual amount of sediment added, so that when there is a lot of sedimentation material, the filtration area of ​​the centrifugal telescopic filter cloth 12 can be automatically expanded, so that the centrifugal telescopic filter cloth 12 has a higher use efficiency; Step 4: During centrifugal filtration, the built-in drum 10 is conveniently driven to rotate in the centrifugal drum 1 by rotating the motor 6 and the transmission shaft 9, and the sediment is centrifugally separated by the long and thin drainage grooves 11 and the centrifugal telescopic filter cloth 12, and the filtrate is discharged and collected through the storage tank 7 and the discharge pipe 8; Step 5: Wash the collected filtrate and then freeze-dry it to obtain highly dispersed graphene nano-palladium crystal particles.

[0032] The working principle and use process of the present invention: during the specific application process of the preparation equipment, first, when the sedimentation material enters the centrifugal drum 1, the sedimentation material falls from the top of the centrifugal drum 1 from top to bottom, and the spiral driving blade 24 is driven to rotate by the gravity of the falling sedimentation material, and the spiral driving blade 24 is rotated along the straight section of the top cover 3, so that the sedimentation material needs to be transported by the spiral driving blade 24 before entering the built-in rotating drum 10, which is convenient for the spiral driving blade 24 to drive the sedimentation material to rotate synchronously, and is convenient for effectively mixing the sedimentation material before centrifugal separation, so that the various components inside the sedimentation material are fully dispersed, so as to facilitate subsequent better centrifugal separation, and at the same time reduce the pressure of the sedimentation material when entering, so that the sedimentation material enters more slowly later, and avoids the impact pressure of the sedimentation material when entering. The impact on the centrifugal telescopic filter cloth 12 is subsequently avoided, causing the centrifugal telescopic filter cloth 12 to be deformed and damaged, affecting its actual filtering effect; After the sedimentation material is driven by the spiral driving blade 24, it enters the concentration cylinder 28. At this time, the sedimentation material is conveniently transported to the built-in rotating cylinder 10 in a multi-channel manner through the multiple through holes 30 opened in the feed disk 29 at the bottom of the concentration cylinder 28. When the sedimentation material enters, the sedimentation material first enters the control tube 31, and the receiving cylinder 34 is driven to move downward based on the weight of the material, so that the supporting fine spring 33 contracts, so as to facilitate the adjustment of the downward position of the receiving cylinder 34 according to the weight of the material, and further adjust the overlap size between the drop chute 35 and the discharge chute 32, so that the material can easily enter the built-in rotating cylinder 10 through the overlap position between the drop chute 35 and the discharge chute 32, so as to adjust the inlet according to the amount of material entering, so that the inlet is automatically opened and closed. At the same time, this material control method can also control the maximum amount of material entering, so as to avoid a large amount of sedimentation material entering at a single time, which reduces the filtering effect. In addition, when the spiral driving blade 24 rotates, it is convenient to synchronously drive the connecting rod 25, the connecting seat 26 and the scraper 27 to rotate, so that the scraper 27 can scrape off the sediment material attached to the inner wall of the concentrating tube 28 through the contact between the scraper 27 and the inner wall of the concentrating tube 28, thereby avoiding the waste caused by the adhesion and accumulation of sediment material; When the sediment material is added into the centrifugal telescopic filter cloth 12, the weight chassis 13 is driven to rise and fall according to the total weight of the added amount of the sediment material, and the centrifugal telescopic filter cloth 12 is further driven to perform telescopic activities. At the same time, the elastic steel wire 15 and the stretching fine spring 18 will be synchronously extended with the telescopic expansion of the centrifugal telescopic filter cloth 12. After the materials inside the centrifugal telescopic filter cloth 12 are separated, the centrifugal telescopic filter cloth 12 can be automatically folded and contracted through the resetting effect of the elastic steel wire 15 and the stretching fine spring 18, so that the centrifugal telescopic filter cloth 12 can automatically expand its effective use area according to the actual amount of sediment added, which is convenient for adaptive adjustment and improves the use efficiency of the centrifugal telescopic filter cloth 12. At the same time, the centrifugal telescopic filter cloth 12 is used to drive the folded filter cloth 17 to stretch in the top ring box 16, so that when there is a lot of sediment material, the filtration area of ​​the centrifugal telescopic filter cloth 12 is automatically expanded, which is convenient for flexible adjustment according to the actual processing amount of the sediment material, ensuring the centrifugal separation effect, and providing convenience for the subsequent cleaning process, making the centrifugal separation process more convenient; Furthermore, through the mounting strip 19 and the adsorption magnetic ring 20 at the edge of the built-in drum 10, and the sliding magnetic block 21 at the edge of the side ring 14, after the counterweight chassis 13 slides to a stable position, the adsorption magnetic ring 20 is energized, so as to facilitate the stable adsorption of the sliding magnetic block 21, thereby realizing the limited processing of the sliding position of the counterweight chassis 13, thereby ensuring that the centrifugal telescopic filter cloth 12 can be stably centrifugally rotated with the built-in drum 10, thereby improving the separation effect of the sedimentation material therein; When the centrifugal telescopic filter cloth 12 needs to be cleaned, the adsorption magnetic rings 20 at the corresponding positions are individually controlled, so that the magnetic changes of the adsorption magnetic rings 20 at different positions can drive the sliding magnetic block 21 to be adsorbed and moved, and the reciprocating changes of the magnetic properties of the adsorption magnetic rings 20 can make the sliding magnetic block 21 move up and down in the process of adsorption and movement, so that the sliding magnetic block 21 can drive the centrifugal telescopic filter cloth 12 to shake back and forth, so that the materials attached to the edge of the centrifugal telescopic filter cloth 12 can be quickly collected to the bottom of the centrifugal telescopic filter cloth 12 under the shaking action, so as to facilitate the convenient cleaning of the centrifugal telescopic filter cloth 12; Finally, the built-in drum 10 is conveniently driven to rotate in the centrifugal drum 1 by rotating the motor 6 and the transmission shaft 9, and the sediment is centrifugally separated by cooperating with the long and thin drainage grooves 11 and the centrifugal telescopic filter cloth 12, and the filtrate is discharged through the storage tank 7 and the discharge pipe 8.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A separation device for preparing graphene nano-palladium crystal particles, comprising a centrifugal cylinder (1), characterized in that: The top of the centrifugal cylinder (1) is connected to a top cover (3), and the middle end of the top of the top cover (3) is connected to a feed pipe (2); the top of the centrifugal cylinder (1) and the top cover (3) are detachably connected via a connecting flange (4); each side end of the bottom of the centrifugal cylinder (1) is fixedly connected to a support rod (5), and a rotating motor (6) is installed on the inner side of the support rod (5) via a motor seat; an accumulation groove (7) is provided at the bottom of the inner side of the centrifugal cylinder (1) along a circumferential direction, and a discharge pipe (8) is connected to the bottom side of the centrifugal cylinder (1) corresponding to the accumulation groove (7); the top output end of the rotating motor (6) is connected to a transmission shaft (9), and the top of the transmission shaft (9) is fixedly connected to a built-in rotating drum (10) at a position inside the centrifugal cylinder (1); The edge of the built-in rotating drum (10) is provided with long and thin drainage grooves (11) at equal angles along the vertical direction thereof; a centrifugal telescopic filter cloth (12) is arranged on the inner side of the built-in rotating drum (10); a counterweight chassis (13) is arranged on the bottom end of the centrifugal telescopic filter cloth (12); and a side ring (14) is installed on the edge of the counterweight chassis (13); a plurality of groups of elastic steel wires (15) are embedded and connected to the edge of the centrifugal telescopic filter cloth (12); a top ring box (16) is arranged on the top of the built-in rotating drum (10); a folded filter cloth (17) is placed on the inner side of the top ring box (16) in a folded manner; the folded filter cloth (17) is connected to the top of the centrifugal telescopic filter cloth (12); and a tension fine spring (18) is connected to the edge of the side ring (14) at an equal angle at a position outside the centrifugal telescopic filter cloth (12); The outer edge of the built-in rotating drum (10) is provided with a mounting strip (19) at equal angles along its vertical direction, and the edge of the mounting strip (19) is connected to a plurality of groups of adsorption magnetic rings (20) at equal distances along the horizontal direction of the built-in rotating drum (10), and the edge of the edge ring (14) is connected to a sliding magnetic block (21) at equal angles at the corresponding position of the mounting strip (19).

2. A separation device for preparing graphene nano-palladium crystal particles according to claim 1, characterized in that: A stretching groove is provided at the bottom of the top ring box (16), and the centrifugal telescopic filter cloth (12) pulls the folded filter cloth (17) to unfold, and the centrifugal telescopic filter cloth (12) can be stretched and retracted along its vertical direction, and the centrifugal telescopic filter cloth (12) can be quickly reset by means of the elastic steel wire (15) and the stretching fine spring (18) at its edge.

3. A separation device for preparing graphene nano-palladium crystal particles according to claim 1, characterized in that: The adsorption magnetic ring (20) is an electromagnetic ring, and a plurality of groups of adsorption magnetic rings (20) on the edge of the mounting strip (19) are controlled by a separate power connection control method, and the sliding magnetic block (21) and the adsorption magnetic ring (20) at the corresponding position are limitedly connected by magnetic means.

4. The separation device for preparing graphene nano-palladium crystal particles according to claim 1, characterized in that: The inner side end of the top cover (3) is fixedly connected to a bracket (22); the center position of the bracket (22) is rotatably connected to a rotating shaft (23) via a bearing seat; the side end of the rotating shaft (23) is provided with a spiral driving blade (24) along a spiral direction; the bottom end of the rotating shaft (23) is connected to a connecting rod (25) in an extended manner; the end of the connecting rod (25) is connected to a connecting seat (26); and the connecting rod (25) is connected to a scraper (27) via the connecting seat (26) at its end; and the bottom end of the top cover (3) is connected to a concentrating cylinder (28).

5. A separation device for preparing graphene nano-palladium crystal particles according to claim 4, characterized in that: The rotating shaft (23) drives the spiral driving blade (24) to rotate in the middle of the bracket (22), and the edge of the spiral driving blade (24) contacts the inner wall of the top cover (3).

6. The separation device for preparing graphene nano-palladium crystal particles according to claim 4, characterized in that: The rotating shaft (23) drives the connecting rod (25) and the scraper (27) to rotate synchronously, and the cross-sectional shape of the scraper (27) matches the cross-sectional shape of the concentrating cylinder (28), and the scraper (27) rotates along the inner wall of the concentrating cylinder (28).

7. The separation device for preparing graphene nano-palladium crystal particles according to claim 4, characterized in that: The bottom end of the centralizing cylinder (28) is fixedly connected to a feed tray (29), the inside of the feed tray (29) is provided with a through hole (30), the bottom end of the feed tray (29) is located at the edge of the through hole (30) and is connected to a material control pipe (31), the four sides of the bottom of the material control pipe (31) are provided with a material discharge groove (32), and a supporting fine spring (33) is embedded and installed at the inner bottom of the material control pipe (31); The inner top of the material control tube (31) is connected to a material receiving barrel (34) at the top of the supporting fine spring (33), and the top four side ends of the material receiving barrel (34) are provided with drop grooves (35). The top surface of the feed tray (29) is provided with a sealing rubber ring (36) at the edge of the through hole (30).

8. The separation device for preparing graphene nano-palladium crystal particles according to claim 7, characterized in that: The material receiving barrel (34) moves up and down along the inner wall of the material control tube (31), and the sealing rubber ring (36) blocks the top of the material receiving barrel (34), so that the material at the bottom of the concentrating barrel (28) completely enters the material receiving barrel (34).

9. The separation device for preparing graphene nano-palladium crystal particles according to claim 7, characterized in that: The inner bottom of the receiving barrel (34) is provided with a receiving groove, the drop groove (35) corresponds to the position of the discharge groove (32), and the groove widths of the drop groove (35) and the discharge groove (32) are equal.

10. A separation method for preparing graphene nano-palladium crystal particles, using the separation device according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: After the metal PdII ions are loaded and reduced to obtain a black precipitate, the black precipitate needs to be fed into a centrifugal cylinder (1) through a feed pipe (2) for centrifugal separation. When the black precipitate enters the centrifugal cylinder (1), the spiral driving blade (24) is driven to rotate by the gravity of the falling precipitate material, so as to facilitate effective mixing treatment, so that the components inside the precipitate material are kept fully dispersed, and the impact pressure when the precipitate material enters is prevented from causing subsequent impact on the centrifugal telescopic filter cloth (12); Step 2: adjusting the downward position of the receiving cylinder (34) according to the weight of the sedimentation material, so that the sedimentation material enters the built-in rotating cylinder (10) through the overlapping position between the descending trough (35) and the discharging trough (32), thereby adjusting the inlet according to the amount of material entering, controlling the maximum amount of material entering, and avoiding a large amount of sedimentation material entering at a time, which reduces the filtering effect; Step 3: The counterweight chassis (13) and the centrifugal telescopic filter cloth (12) are driven to expand and contract by the sedimentation material, so that the centrifugal telescopic filter cloth (12) automatically expands its effective use area according to the actual amount of sediment added, so that when there is a lot of sedimentation material, the filtration area of ​​the centrifugal telescopic filter cloth (12) is automatically expanded, so that the centrifugal telescopic filter cloth (12) has a higher use efficiency; Step 4: During centrifugal filtration, the built-in rotating drum (10) is conveniently driven to rotate in the centrifugal drum (1) by rotating the motor (6) and the transmission shaft (9), and the sediment is centrifugally separated in cooperation with the long and thin drainage groove (11) and the centrifugal telescopic filter cloth (12), and the filtrate is discharged and collected through the storage tank (7) and the discharge pipe (8); Step 5: Wash the collected filtrate and then freeze-dry it to obtain highly dispersed graphene nano-palladium crystal particles.

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