An apparatus integrating planet soil collection, particle size screening, and mineral separation

Abstract

The present invention relates to a device integrating planetary soil collection, particle size screening and mineral sorting, comprising a power mechanism, a collection mechanism, a primary screening mechanism, a conveyor belt and a sorting mechanism, wherein the primary screening mechanism is arranged horizontally, the power mechanism is transmission-connected to one end of the primary screening mechanism and drives the primary screening mechanism to rotate, the collection mechanism is sleeved and fixed on the outer peripheral side of the primary screening mechanism and rotates synchronously with the primary screening mechanism to collect planetary soil, and the collected planetary soil enters the primary screening mechanism for primary screening; the sorting mechanism is located at the other end of the primary screening mechanism, a part of the conveyor belt is located in the primary screening mechanism, and the conveyor belt is used to convey the planetary soil that has passed the primary screening to the sorting mechanism for sorting. The present invention integrates the planetary soil collection mechanism, the primary screening mechanism, the conveyor belt and the sorting mechanism into one, has the advantages of high degree of automation, simple structure and multi-function integration, and has the functions of efficiently collecting and screening planetary soils of different particle sizes, and on-demand mineral separation.

Description

Technical Field

[0001] The present invention relates to the technical field related to the research of planetary soil, and particularly relates to a device integrating planetary soil collection, particle size screening and mineral separation. Background Art

[0002] In the research of planetary soil, taking lunar soil research as an example, in order to understand the formation and evolution process of the Earth-Moon system and realize lunar exploration activities, the method of collecting lunar soil and analyzing its components can be used for research. At the same time, using the oxygen-rich ilmenite in lunar soil to produce water and other basic manufacturing can meet the basic needs in human lunar exploration activities. Therefore, the efficient collection and sorting enrichment of lunar soil is the basic work for exploring the moon.

[0003] The surface sampling of lunar soil mainly adopts methods such as shoveling, shallow drilling and grinding according to factors such as mission objectives and sampling environments. Among these three sampling methods, the shoveling method has high sampling efficiency but is difficult to perform precise sampling. The drilling method can control the sampling depth but has low efficiency. The grinding method has a wide coverage area but is less used due to its complex structure. Due to the high cost of space transportation and the complexity of the lunar surface environment, a small device that can be carried on a lunar rover is required for the efficient collection of lunar soil.

[0004] Currently, the screening of lunar soil is mainly based on particle size. One of the relatively mature screening methods - dry screening method mainly uses a series of sieves with different pore sizes to screen soil samples into different particle size ranges through mechanical vibration or manual screening. The advantage of this technology is that it is simple to operate and suitable for screening larger particles; the disadvantage is that it has low efficiency for fine particles (<20 microns), which may cause particle loss or sieve pore blockage.

[0005] Another relatively mature screening method - electrostatic method mainly uses the difference in electrostatic forces exerted by lunar soil with different particle sizes in an electrostatic field to separate lunar soil according to particle size ranges. The advantage of this technology is that it will not cause physical damage to lunar soil particles, retains the original shape and structure of the particles, and at the same time can be highly automated to improve accuracy and reduce human operation errors. The disadvantage of this technology is that the separation equipment is usually relatively complex and costly.

[0006] The beneficiation technology for ilmenite in industry is relatively mature. In the process of separating and enriching ilmenite, the combination of gravity separation, flotation and magnetic separation is often used. Due to the self-magnetic characteristics of ilmenite, it is a weakly magnetic substance, and in a strong magnetic field environment, minerals containing ilmenite components can deviate from their original movement trajectories, thus achieving the purpose of separation. Due to the high cost of space transportation and the microgravity environment, the commonly used gravity separation and flotation on Earth are no longer applicable because they rely too much on large equipment or liquid reagents.

[0007] "Design and Research on Electrostatic Adsorption Type Lunar Soil Micro Sampler" shows that when using electrostatic separation technology to sort lunar soil particles, the dielectric constant of lunar soil changes with the particle size. When the particle size is between 0 and 150 μm, the dielectric constant of lunar soil increases with the increase of particle size. The greater the relative dielectric constant of lunar soil particles, the stronger the electric field adsorption ability. By controlling the electric field strength between different electrodes, lunar soil particles can be separated. The process of electrostatic separation of lunar soil is that free charged lunar soil particles are adsorbed by charged electrodes, and the charged electrodes are regularly discharged and charged to make the adsorbed lunar soil fall into the lunar soil collection box. There are mainly three reasons why this technology cannot be effectively implemented on the lunar surface: ① The charged property of lunar soil is unstable, and some lunar soil itself is not charged; ② A single electrode cannot effectively collect lunar soil with different particle sizes; ③ The lunar soil particles are of different sizes, and the charged property of larger lunar soil is not obvious, so that the electrostatic force it receives cannot offset other forces to achieve the effect of adsorption and separation.

[0008] "Separation Mechanism and Experimental Research on Dry Vibration High-Gradient Magnetic Separator" shows that in the process of dry vibration high-gradient magnetic separation, mineral particles are mainly affected by magnetic force, vibration inertia force, fluid force, gravity, friction force, van der Waals force and cohesion force between heterogeneous mineral particles. By vibrating up and down, the magnetic medium wire and the mineral particles gathered on its surface have a large relative movement in each movement cycle, so that the minerals with high magnetic permeability in the mineral particles are adsorbed on the surface of the magnetic medium wire under the action of magnetic force, and the minerals with low magnetic permeability or non-magnetic minerals are shaken off. The process of dry vibration high-gradient magnetic separation - the mineral particles falling freely vibrate continuously in the magnetic medium net. Under the action of magnetic force, ilmenite is adsorbed on the magnetic medium, and the rest of the substances are shaken off, and the minerals are sorted through a regular additional magnetic field. The main reasons why this technology cannot be effectively implemented on the lunar surface are as follows: The industrial mineral processing that has been realized has a large volume of magnetic separators due to the complex composition and different particle sizes of the mineral particles to be sorted, and the cost of extraterrestrial operations is high.

[0009] In view of this, in order to efficiently collect, sort and enrich lunar soil in the special environment on the lunar surface, the present invention provides a device integrating planetary soil collection, particle size screening and mineral separation. Summary of the Invention

[0010] The present invention provides a device integrating planetary soil collection, particle size screening and mineral separation to solve one or several of the technical problems existing in the prior art.

[0011] The technical solution of the present invention to solve the above technical problems is as follows: a device integrating planetary soil collection, particle size screening and mineral sorting, comprising a power mechanism, a collection mechanism, a primary screening mechanism, a conveyor belt and a sorting mechanism, the primary screening mechanism is arranged horizontally, the power mechanism is transmission connected to one end of the primary screening mechanism and drives the primary screening mechanism to rotate, the collection mechanism is sleeved and fixed on the outer peripheral side of the primary screening mechanism and rotates synchronously with the primary screening mechanism to collect planetary soil, and the collected planetary soil enters the primary screening mechanism for primary screening; the sorting mechanism is located at the other end of the primary screening mechanism, a part of the conveyor belt is located in the primary screening mechanism, and the conveyor belt is used to convey the planetary soil that has passed the primary screening to the sorting mechanism for sorting.

[0012] The beneficial effects of the present invention are as follows: the present invention integrates planetary soil collection, particle size screening and mineral sorting into one device, which integrates a planetary soil collection mechanism, a primary screening mechanism, a conveyor belt and a sorting mechanism into one, and has the advantages of high degree of automation, simple structure and multi-functions in one, and has the functions of efficiently collecting and screening planetary soils of different particle sizes, as well as mineral separation on demand.

[0013] Based on the above technical solution, the present invention can also be improved as follows.

[0014] Further, the sorting mechanism includes an electrostatic separation part, which includes an electrostatic separation shell, multiple driving mechanisms, multiple groups of electrode rings, multiple annular support frames and multiple collecting buckets. The multiple annular support frames are coaxially arranged in sequence and are all fixed on the electrostatic separation shell. A group of electrode rings is provided between two adjacent annular support frames. The electrode rings are rotatably connected to the annular support frames through connecting bearings. The multiple groups of electrode rings are coaxially arranged in sequence; each group of electrode rings includes multiple electrode rings coaxially connected through connecting bearings. Multiple driving mechanisms are respectively fixed on the electrostatic separation shell, each driving mechanism corresponds to an electrode ring and drives the electrode ring to rotate, and a collecting bucket is provided under each electrode ring;

[0015] The conveyor belt extends into a cylindrical structure formed by a plurality of electrode rings and a plurality of annular support frames and extends out from the cylindrical structure.

[0016] The beneficial effect of adopting the above further solution is that the electrode ring can be effectively and stably supported by adopting a structural form in which the annular support frame and the electrode ring are matched.

[0017] Furthermore, the electrostatic separation housing is provided with a plurality of brushes, and each brush is arranged corresponding to an electrode ring;

[0018] The electrode ring includes an insulating ring and two electrodes disposed on the outer sidewall of the insulating ring. The ends of the two electrodes are arranged at intervals, and the brush contacts the electrodes. Two groups of electrostatic separation through-holes are provided on the insulating ring, and a group of electrostatic separation through-holes is provided at the middle position of each electrode. Each group of electrostatic separation through-holes includes a plurality of electrostatic separation through-holes arranged in a row at intervals along the axial direction of the electrode ring, and the collection hopper is correspondingly disposed below a group of electrostatic separation through-holes.

[0019] The beneficial effect of adopting the above further solution is that by providing electrostatic separation through-holes on the insulating ring, it is convenient to collect the electrostatically separated lunar soil through the electrostatic separation through-holes and drop it into the collection hopper.

[0020] Further, the driving mechanism includes a driving motor and a driving gear. The driving motor is fixed on the electrostatic separation housing through an L-shaped plate. The output shaft of the driving motor is coaxially connected to the driving gear and drives the driving gear to rotate. The central axis of the driving gear is arranged parallel to the central axis of the electrode ring. A driving tooth ring is provided on the electrode ring, and the driving gear meshes with the driving tooth ring.

[0021] Further, radial support rods are connected to the middle parts of the annular support frames at both ends of the electrostatic separation housing, or radial support rods are provided on all annular support frames; axial support rods are provided on the radial support rods. The axial support rods penetrate the cylindrical structure along the axial direction of the cylindrical structure, and the axial support rods extend into the primary screening mechanism. The conveyor belt is sleeved on the axial support rods, and conveyor motors for driving the conveyor belt to run are respectively provided at both ends of the axial support rods.

[0022] The beneficial effect of adopting the above further solution is that by providing radial support rods and annular support frames, the electrostatic separation housing and other structural components of the electrostatic separation part can be effectively supported.

[0023] Further, the sorting mechanism includes a magnetic separation part. The magnetic separation part includes a magnetic separation housing, a magnetic separation chamber, a magnetic medium net, a cam, a cam driving part, and a spring. The magnetic medium net is disposed in the magnetic separation chamber. The magnetic separation chamber is disposed in the magnetic separation housing. An inlet is provided at the top of the magnetic separation housing and is communicated with the magnetic separation chamber. The conveyor belt is communicated with the inlet.

[0024] The bottom of the magnetic separation chamber protrudes from the bottom of the magnetic separation housing and is connected to the first connecting frame by a spring. The cam driving part is connected to the cam through a driving shaft and drives the cam to rotate to intermittently squeeze the first connecting frame, so that the magnetic separation chamber elastically connected to the first connecting frame vibrates; or, the top of the magnetic separation chamber protrudes from the top of the magnetic separation housing and is provided with a second connecting frame. The second connecting frame is connected to the top of the magnetic separation housing by a spring. The cam driving part is connected to the cam through a driving shaft and drives the cam to rotate to intermittently squeeze the second connecting frame, so that the magnetic separation chamber elastically connected to the second connecting frame vibrates.

[0025] The beneficial effect of adopting the above further solution is that by setting the cam and the cam driving part, the substances not adsorbed by the magnetic medium net can be shaken to the bottom of the magnetic separation chamber.

[0026] Further, a discharge cylinder extending from the bottom of the magnetic separation housing is provided at the bottom of the magnetic separation chamber. A collection box is provided below the magnetic separation housing. Two collection areas are separated in the collection box; a separation driving part and a separation baffle are provided at the collection port of the collection box. The separation driving part is connected to the separation baffle and drives the separation baffle to be obliquely arranged between one of the collection areas and the discharge cylinder.

[0027] The beneficial effect of adopting the above further solution is that by setting the separation driving part and the separation baffle, different substances separated by magnetic separation can be collected into different collection areas through the separation baffle respectively.

[0028] Further, a hoist and a feeding plate are provided between the conveyor belt and the feeding port. The lower end of the hoist is connected to the conveyor belt, the upper end of the hoist is connected to one end of the feeding plate, and the other end of the feeding plate is located above the feeding port.

[0029] Further, the sorting mechanism includes an electrostatic separation part and a magnetic separation part. The conveyor belt extending from the electrostatic separation part is communicated with the feeding port of the magnetic separation part. The power mechanism, the acquisition mechanism, the primary screening mechanism, the conveyor belt and the electrostatic separation part are all two groups, and the magnetic separation part is one. One group of the power mechanism, the acquisition mechanism, the primary screening mechanism, the conveyor belt and the electrostatic separation part is provided on each side of the magnetic separation part.

[0030] The beneficial effect of adopting the above further solution is that by using the electrostatic separation part and the magnetic separation part together as the sorting mechanism, the planet soil particles can be effectively sorted.

[0031] Further, the primary screening mechanism includes an outer screening cylinder, an inner screening cylinder and a connecting plate. The outer screening cylinder is sleeved outside the inner screening cylinder and is arranged at an interval from the inner screening cylinder. One end of the outer screening cylinder and one end of the inner screening cylinder are both fixed on the connecting plate, and the other end of the outer screening cylinder and the other end of the inner screening cylinder are connected; the power output end of the power mechanism is connected to the connecting plate through a connector, and a part of the conveyor belt is located inside the inner screening cylinder;

[0032] The collecting mechanism is sleeved on the outer sieve cylinder and fixedly connected to the outer sieve cylinder or the connecting plate.

[0033] The beneficial effect of adopting the above further scheme is that by setting the inner sieve cylinder and the outer sieve cylinder, the planetary soil collected by the collection mechanism can be screened twice, and after screening, it enters the conveyor belt and is conveyed to the sorting mechanism for the next step of sorting.

[0034] Furthermore, the connector is eccentrically arranged on the connecting plate, and the connector is coaxially arranged with the collecting mechanism.

[0035] The beneficial effect of adopting the above further scheme is: using an eccentrically arranged connector, the primary screening mechanism is eccentrically arranged in the collection mechanism, which is convenient for realizing eccentric vibration when collecting planetary soil, thereby achieving a better primary screening effect.

[0036] Furthermore, there are two outer sieve cylinders, one end of one outer sieve cylinder is fixed on the connecting plate, one end of the other outer sieve cylinder is connected to the other end of the inner sieve cylinder, and a gap is reserved between the other end of one outer sieve cylinder and the other end of the other outer sieve cylinder.

[0037] The beneficial effect of adopting the above further solution is that a gap is provided between the two outer sieve cylinders, and the unscreened planetary soil can be discharged from the gap.

[0038] Furthermore, the collection mechanism includes a plurality of annular collection buckets connected axially in sequence, a plurality of cutting buckets connected to the interior of the annular collection buckets are arranged on the peripheral side walls of the annular collection buckets, and cutting edges are arranged at the ends of the cutting buckets; the cutting buckets on adjacent annular collection buckets are staggered.

[0039] Furthermore, the power mechanism includes a power motor, and the output shaft of the power motor is transmission-connected to one end of the primary screening mechanism through a bevel gear set. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of the structure of the device that integrates planetary soil collection, particle size screening and mineral sorting in the present invention;

[0041] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0042] Figure 3 It is a structural schematic diagram of the electrostatic separation unit of the present invention;

[0043] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of the middle B part;

[0044] Figure 5Schematic three-dimensional structure diagram of the magnetic separation part of the present invention;

[0045] Figure 6 Schematic cross-sectional structure diagram of the magnetic separation part of the present invention;

[0046] Figure 7 Schematic three-dimensional structure of the collection mechanism of the present invention Figure 1 ;

[0047] Figure 8 Schematic three-dimensional structure of the collection mechanism of the present invention Figure 2 ;

[0048] Figure 9 Schematic three-dimensional structure diagram of the preliminary screening mechanism of the present invention;

[0049] Figure 10 Schematic cross-sectional structure diagram of the power structure of the present invention.

[0050] In the drawings, the components represented by the reference numerals are listed as follows:

[0051] 100, power mechanism; 101, power motor; 102, output shaft; 103, bevel gear set; 104, coupling; 105, connecting shaft; 106, support arm housing; 107, power output end; 108, support rod;

[0052] 200, collection mechanism; 201, annular collection hopper; 202, cutting bucket; 203, cutting edge;

[0053] 300, preliminary screening mechanism; 301, outer screening cylinder; 302, inner screening cylinder; 303, connecting plate; 304, connector;

[0054] 400, conveyor belt;

[0055] 500, electrostatic separation part; 501, electrostatic separation housing; 502, drive motor; 503, drive gear; 504, insulating ring; 505, annular support frame; 506, collection hopper; 507, connecting bearing; 508, L-shaped plate; 509, drive gear ring; 510, radial support rod; 511, axial support rod; 512, conveyor motor; 513, roller; 514, electrostatic separation through hole; 515, electrode; 516, brush;

[0056] 600, magnetic separation part; 601, magnetic separation housing; 602, magnetic separation cavity; 603, magnetic medium net; 604, spring; 605, cam; 606, cam drive part; 607, first connecting frame; 608, second connecting frame; 609, discharge tube; 610, feed tube; 611, collection box; 612, partition drive part; 613, partition baffle; 614, collection port; 615, drive shaft;

[0057] 700. Elevator; 701. Feed plate. DETAILED DESCRIPTION

[0058] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0059] like Figures 1 to 10 As shown, a device integrating planetary soil collection, particle size screening and mineral sorting in this embodiment includes a power mechanism 100, a collection mechanism 200, a primary screening mechanism 300, a conveyor belt 400 and a sorting mechanism, wherein the primary screening mechanism 300 is arranged horizontally, the power mechanism 100 is transmission-connected to one end of the primary screening mechanism 300 and drives the primary screening mechanism 300 to rotate, the collection mechanism 200 is sleeved and fixed on the outer peripheral side of the primary screening mechanism 300 and rotates synchronously with the primary screening mechanism 300 to collect planetary soil, and the collected planetary soil enters the primary screening mechanism 300 for primary screening; the sorting mechanism is located at the other end of the primary screening mechanism 300, a part of the conveyor belt 400 is located in the primary screening mechanism 300, and the conveyor belt 400 is used to convey the planetary soil that has passed the primary screening to the sorting mechanism for sorting.

[0060] The primary screening mechanism 300 of this embodiment can control the size of the planetary soil, so that the size of the input mineral particles is within a controllable range, greatly reducing the size of the equipment.

[0061] Optionally, the collection mechanism 200 and / or the primary screening mechanism 300 may be made of copper, which can cause most of the planetary soil particles to be frictionally charged during collection or primary screening, making it easier for the subsequent electrostatic separation unit to perform electrostatic separation operations thereon.

[0062] Specifically, Figure 1 , Figure 3 and Figure 4As shown, the sorting mechanism of this embodiment includes an electrostatic separation part 500. The electrostatic separation part 500 includes an electrostatic separation housing 501, a plurality of driving mechanisms, multiple groups of electrode rings, a plurality of annular support frames 505, and a plurality of collection hoppers 506. The plurality of annular support frames 505 are arranged coaxially in sequence and are all fixed on the electrostatic separation housing 501. A group of electrode rings is provided between two adjacent annular support frames 505. The electrode rings and the annular support frames 505 are rotationally connected through connecting bearings 507, and the multiple groups of electrode rings are arranged coaxially in sequence; each group of electrode rings includes a plurality of electrode rings that are coaxially rotationally connected through connecting bearings 507. The plurality of driving mechanisms are respectively fixed on the electrostatic separation housing 501. Each driving mechanism corresponds to an electrode ring and drives the electrode ring to rotate. A collection hopper 506 is correspondingly provided below each electrode ring; the conveyor belt 400 extends into the cylindrical structure formed by the multiple groups of electrode rings and the plurality of annular support frames 505 and extends out of the cylindrical structure. The structure form of matching the annular support frame with the electrode ring can effectively and stably support the electrode ring.

[0063] As Figure 3 and Figure 4 As shown, a plurality of electric brushes 516 are provided on the electrostatic separation housing 501 of this embodiment. Each electric brush 516 is arranged corresponding to an electrode ring; the electrode ring includes an insulating ring 504 and two arc-shaped electrodes 515 provided on the outer sidewall of the insulating ring 504. The ends of the two electrodes are arranged at intervals, and the electric brush 516 is in contact with the electrode 515; two groups of electrostatic separation through holes 514 are provided on the insulating ring 504. A group of electrostatic separation through holes 514 is provided at the middle position of each electrode 515. Each group of electrostatic separation through holes 514 includes a plurality of electrostatic separation through holes 514 arranged in a row at intervals along the axial direction of the electrode ring. The collection hopper 506 is correspondingly provided below a group of electrostatic separation through holes 514.

[0064] Specifically, as Figure 3 and Figure 4 As shown, the electrode ring includes two insulating half-cylinders, and the two insulating half-cylinders are butted to form an electrode ring in a ring-shaped cylindrical structure. By providing electrostatic separation through holes on the insulating ring, it is convenient to collect the electrostatically separated lunar soil through the electrostatic separation through holes and fall into the collection hopper.

[0065] As Figure 3 and Figure 4As shown in the figure, the drive mechanism of this embodiment includes a drive motor 502 and a drive gear 503. The drive motor 502 is fixed on the electrostatic separation housing 501 through an L-shaped plate 508. The output shaft of the drive motor 502 is coaxially connected to the drive gear 503 and drives the drive gear 503 to rotate. The central axis of the drive gear 503 is arranged parallel to the central axis of the electrode ring. A drive tooth ring 509 is provided on the electrode ring, and the drive gear 503 meshes with the drive tooth ring 509.

[0066] As Figure 3 and Figure 4 shown in the figure, in this embodiment, a radial support rod 510 is connected to the middle of the annular support frames 505 at both ends of the electrostatic separation housing 501, or radial support rods 510 are provided on all the annular support frames 505; an axial support rod 511 is provided on the radial support rod 510. The axial support rod 511 penetrates the cylindrical structure along the axial direction of the cylindrical structure, and the axial support rod 511 extends into the primary screening mechanism 300. The conveyor belt 400 is sleeved on the axial support rod 511, and conveyor motors 512 for driving the conveyor belt 400 to run are respectively provided at both ends of the axial support rod 511. By providing the radial support rods and the annular support frames, the electrostatic separation housing and other structural components of the electrostatic separation part can be effectively supported.

[0067] As Figure 2 、 Figures 5 to 6 shown in the figure, the sorting mechanism of this embodiment includes a magnetic separation part 600.

[0068] As Figure 2 shown in the figure, an optional solution of the magnetic separation part 600 is that the magnetic separation part 600 includes a magnetic separation housing 601, a magnetic separation chamber 602, a magnetic medium net 603, a cam 605, a cam driving part 606 and a spring 604. The magnetic medium net 603 is arranged in the magnetic separation chamber 602, the magnetic separation chamber 602 is arranged in the magnetic separation housing 601, and a feed inlet communicating with the magnetic separation chamber 602 is provided at the top of the magnetic separation housing 601. The conveyor belt 400 communicates with the feed inlet; the bottom of the magnetic separation chamber 602 protrudes from the bottom of the magnetic separation housing 601 and is connected to a first connection frame 607 through a spring 604. The cam driving part 606 is connected to the cam 605 through a driving shaft 615 and drives the cam 605 to rotate to intermittently squeeze the first connection frame 607, so that the magnetic separation chamber 602 elastically connected to the first connection frame 607 vibrates;

[0069] As Figures 5 to 6As shown in the figure, another alternative for the magnetic separation unit 600 in this embodiment is that the top of the magnetic separation chamber 602 protrudes from the top of the magnetic separation housing 601 and is provided with a second connecting frame 608. The second connecting frame 608 is connected to the top of the magnetic separation housing 601 through a spring 604. The cam driving unit 606 is connected to the cam 605 through a driving shaft 615 and drives the cam 605 to rotate to intermittently squeeze the second connecting frame 608, causing the magnetic separation chamber 602 elastically connected to the second connecting frame 608 to vibrate. A feeding cylinder 610 is provided at the top of the magnetic separation chamber 602, and the feeding cylinder 610 is used to input planetary soil particles into the magnetic separation chamber 602. By providing a cam and a cam driving unit, substances that are not adsorbed by the magnetic medium net can be shaken to the bottom of the magnetic separation chamber.

[0070] As Figure 5 and Figure 6 As shown in the figure, a discharge cylinder 609 extending from the bottom of the magnetic separation housing 601 is provided at the bottom of the magnetic separation chamber 602 in this embodiment. A collection box 611 is provided below the magnetic separation housing 601, and two collection areas are separated in the collection box 611; a separation driving unit 612 and a separation baffle 613 are provided at the collection port 614 of the collection box 611. The separation driving unit 612 is connected to the separation baffle 613 and drives the separation baffle 613 to be inclined and arranged between one of the collection areas and the discharge cylinder 609. By providing a separation driving unit and a separation baffle, different substances separated by magnetic separation can be collected into different collection areas through the separation baffle.

[0071] As Figure 1 and Figure 2 As shown in the figure, a hoist 700 and a feeding plate 701 are provided between the conveyor belt 400 and the feeding port in this embodiment. The lower end of the hoist 700 is connected to the conveyor belt 400, the upper end of the hoist 700 is connected to one end of the feeding plate 701, and the other end of the feeding plate 701 is located above the feeding port.

[0072] As Figure 1As shown in the figure, the sorting mechanism of this embodiment includes an electrostatic separation unit 500 and a magnetic separation unit 600. The conveyor belt 400 extending from the electrostatic separation unit 500 communicates with the feeding port of the magnetic separation unit 600. The power mechanism 100, the collection mechanism 200, the primary screening mechanism 300, the conveyor belt 400, and the electrostatic separation unit 500 are all in two groups, and the magnetic separation unit 600 is one. On each side of the magnetic separation unit 600, there is a group of the power mechanism 100, the collection mechanism 200, the primary screening mechanism 300, the conveyor belt 400, and the electrostatic separation unit 500. Using the electrostatic separation unit and the magnetic separation unit together as the sorting mechanism can effectively sort the planet soil particles. The two groups of the power mechanism 100, the collection mechanism 200, the primary screening mechanism 300, the conveyor belt 400, and the electrostatic separation unit 500 are symmetrically arranged on both sides of the magnetic separation unit 600, and the whole device is distributed in a symmetrical axis shape. One end of the support arm housing 106 is hung on the vehicle body or other devices. There is a motor inside the support arm, and the power is transmitted to the collection mechanism and the primary screening mechanism through the transmission shaft and the bevel gears to drive them to rotate.

[0073] As Figure 1 and Figure 9 As shown in the figure, the primary screening mechanism 300 of this embodiment includes an outer screening cylinder 301, an inner screening cylinder 302, and a connecting plate 303. The outer screening cylinder 301 is sleeved outside the inner screening cylinder 302 and is arranged at an interval from the inner screening cylinder 302. One end of the outer screening cylinder 301 and one end of the inner screening cylinder 302 are both fixed on the connecting plate 303, and the other end of the outer screening cylinder 301 is connected to the other end of the inner screening cylinder 302; the power output end 107 of the power mechanism 100 is connected to the connecting plate 303 through a connector 304, and a part of the conveyor belt 400 is located inside the inner screening cylinder 302; the collection mechanism 200 is sleeved on the outer screening cylinder 301 and is fixedly connected to the outer screening cylinder 301 or the connecting plate 303. By setting the inner screening cylinder and the outer screening cylinder, the planet soil collected by the collection mechanism can be screened twice. After screening, it enters the conveyor belt and is conveyed to the sorting mechanism for the next sorting. The inner screening cylinder directly limits the particle size of the planet soil that can enter the subsequent mechanism.

[0074] As Figures 7 to 9 As shown in the figure, the connector 304 is eccentrically arranged on the connecting plate 303, and the connector 304 is coaxially arranged with the collection mechanism 200. By using the eccentrically arranged connector, the primary screening mechanism is eccentrically arranged inside the collection mechanism, which is convenient for realizing eccentric vibration when collecting the planet soil, making the primary screening effect better and achieving a better screening-in effect.

[0075] As Figure 9As shown, in this embodiment, there are two outer sieve cylinders 301, one end of one outer sieve cylinder 301 is fixed on the connecting plate 303, one end of the other outer sieve cylinder 301 is connected to the other end of the inner sieve cylinder 302, and a gap is reserved between the other end of one outer sieve cylinder 301 and the other end of the other outer sieve cylinder 301. A gap is set between the two outer sieve cylinders so that the unscreened planetary soil can be discharged from the gap.

[0076] like Figure 7 and Figure 8 As shown, the collection mechanism 200 of this embodiment includes a plurality of annular collection buckets 201 axially connected in sequence, a plurality of cutting buckets 202 connected to the inside of the annular collection buckets 201 are provided on the peripheral side walls of the annular collection buckets 201, and a cutting edge 203 is provided at the end of the cutting bucket 202; the cutting buckets 202 on adjacent annular collection buckets 201 are staggered.

[0077] The collection mechanism 200 of this embodiment preferably adopts three annular collection buckets 201, and the cutting edges 203 of the three annular collection buckets 201 are arranged in sequence, so that the cutting bucket 202 has a smaller cutting force on the ground each time and is more stable. The power is provided by the power mechanism, and the working depth and area of ​​contact between the collection mechanism and the surface layer are controlled by raising and lowering the support arm, and the steering of the cutting bucket is controlled to collect and discharge the planetary soil.

[0078] like Figure 1 and Figure 10 As shown, the power mechanism 100 of this embodiment includes a power motor 101, and the output shaft 102 of the power motor 101 is connected to one end of the primary screening mechanism 300 through a bevel gear set 103. The power mechanism 100 is arranged in a support arm housing 106, and the output shaft 102 of the power motor 101 is connected to a connecting shaft 105 through a coupling 104 and drives the connecting shaft 105 to rotate, and the connecting shaft 105 is connected to a power output shaft through a bevel gear set, and one end of the power output shaft extends from the support arm housing 106 and serves as a power output end 107 to connect the primary screening mechanism 300 and the collection mechanism 200, and the connecting shaft 105 can be supported in the support arm housing 106 through a support rod 108, and the connecting shaft 105 and the support rod 108 are rotatably connected through a bearing.

[0079] In this embodiment, the conveyor belt 400 extends from inside the primary screening mechanism 300 to the inlet of the magnetic separation section 600. Axial support rods 511 can be arranged inside the primary screening mechanism 300 and the electrostatic separation section 500. The axial support rods 511 are fixed on the radial support rods 510. Wheel axles are respectively arranged at both ends of the axial support rods 511, and rollers 513 are rotatably connected to the wheel axles. Two rollers 513 are arranged at each end of the axial support rod 511, and the two rollers 513 are respectively located on both sides of the axial support rod 511. The conveyor belt 400 is sleeved on the axial support rods 511 and the rollers 513. By controlling the start-stop and rotation speed of the conveyor motor 512, the control of the rollers 513 is realized, and further the conveying speed of the conveyor belt is controlled, so as to control the screening and sorting speed of the planetary soil.

[0080] As Figure 1 shown, in this embodiment, the planetary soil passing through the primary screening mechanism 300 is transported to the downstream electrostatic separation section 500 through the conveyor belt 400. The electrodes of the electrostatic separation section 500 create different electric field intensities by applying different voltages to adsorb and separate the planetary soil from large to small. During the rotation of the electrodes, power is regularly switched on and off, so that the planetary soil particles adsorbed on the electrodes fall into the collection hopper through the electrostatic separation small holes, thereby achieving the purpose of separating the planetary soil according to particle size. The planetary soil that has not been screened after passing through the electrostatic separation section will be continuously sent to the magnetic separation section by the conveyor belt for magnetic separation operation. The planetary soil on the conveyor belt is lifted to the inlet of the magnetic separation section by the elevator. A magnetic field is applied in the magnetic separation cavity. Under the combined action of the cam and the spring, the magnetic separation cavity vibrates up and down, so that the ilmenite with high magnetic permeability repeatedly cuts the magnetic field. The ilmenite is adsorbed on the magnetic medium net under the action of the magnetic field force, and the rest is shaken into a collection area of the collection box; when a certain amount of ilmenite is collected on the magnetic medium net, the electromagnetic field in the magnetic separation cavity disappears, and the partition baffle is turned to one side of the collection box, and the original ilmenite adsorbed on the magnetic medium net is shaken into another collection area of the collection box, thereby realizing the separation of minerals in the planetary soil.

[0081] In view of the particularity of in-situ efficient collection and sorting enrichment of lunar soil, the device of this embodiment overcomes the means of special-purpose machines, adopts an integrated and modular design scheme, integrates multiple functions in one device, and reduces cost expenditure; the collection mechanism adopts the design of a bucket, so that while the collection mechanism realizes efficient collection, there is no need to set up a transfer bin separately, and the primary screening mechanism can also be arranged inside the collection mechanism, greatly reducing the volume of the device and improving the collection and sorting efficiency of lunar soil; a hierarchical screening scheme is adopted. First, the dry screening method is used for mechanical primary screening to control the particle size of lunar soil, and then the electrostatic separation method is used for fine screening of lunar soil in different particle size ranges to improve the screening accuracy; due to the high cost of space transportation and the microgravity environment, the commonly used gravity separation and flotation on Earth rely too much on large equipment or liquid agents and are no longer applicable. The dry magnetic separation method is used for ore dressing, which improves the reliability of the device.

[0082] The device in this embodiment integrates planet soil collection, particle size screening, and mineral separation. It integrates the planet soil collection mechanism, primary screening mechanism, conveyor belt, and separation mechanism, and has the advantages of high automation, simple structure, and multi-function. It can efficiently collect and screen planet soil with different particle sizes and perform mineral separation as required. The device in this embodiment can efficiently collect and screen lunar soil and separate ilmenite from planet soil, providing experimental consumables and material guarantees for the exploration of the planet's surface.

[0083] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.

[0084] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0085] In the present invention, unless otherwise clearly specified and limited, terms such as "install", "connect", "connection", "fix" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Further, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0087] In the description of the present specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in the present specification and the features of different embodiments or examples.

[0088] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A device integrating planetary soil collection, particle size screening and mineral sorting, characterized in that: It comprises a power mechanism, a collection mechanism, a primary screening mechanism, a conveyor belt and a sorting mechanism, wherein the primary screening mechanism is arranged horizontally, the power mechanism is connected to one end of the primary screening mechanism and drives the primary screening mechanism to rotate, the collection mechanism is sleeved and fixed on the outer peripheral side of the primary screening mechanism and rotates synchronously with the primary screening mechanism to collect planetary soil, and the collected planetary soil enters the primary screening mechanism for primary screening; the sorting mechanism is located at the other end of the primary screening mechanism, a part of the conveyor belt is located in the primary screening mechanism, and the conveyor belt is used to convey the planetary soil that has passed the primary screening to the sorting mechanism for sorting; The primary screening mechanism comprises an outer screen cylinder, an inner screen cylinder and a connecting plate, wherein the outer screen cylinder is sleeved outside the inner screen cylinder and is spaced apart from the inner screen cylinder, one end of the outer screen cylinder and one end of the inner screen cylinder are both fixed on the connecting plate, and the other end of the outer screen cylinder is connected to the other end of the inner screen cylinder; the power output end of the power mechanism is connected to the connecting plate through a connector, and a part of the conveyor belt is located in the inner screen cylinder; The collecting mechanism is sleeved on the outer sieve cylinder and fixedly connected to the outer sieve cylinder or the connecting plate; The collecting mechanism comprises a plurality of annular collecting buckets connected in sequence axially, a plurality of cutting buckets connected to the inside of the annular collecting buckets are arranged on the peripheral side walls of the annular collecting buckets, and cutting edges are arranged at the ends of the cutting buckets; the cutting buckets on adjacent annular collecting buckets are staggered.

2. The device for collecting planetary soil, screening particles and sorting minerals according to claim 1, characterized in that: The sorting mechanism includes an electrostatic separation part, which includes an electrostatic separation shell, multiple driving mechanisms, multiple groups of electrode rings, multiple annular support frames and multiple collecting buckets. The multiple annular support frames are coaxially arranged in sequence and are all fixed on the electrostatic separation shell. A group of electrode rings is provided between two adjacent annular support frames. The electrode rings are rotatably connected to the annular support frames through connecting bearings. The multiple groups of electrode rings are coaxially arranged in sequence; each group of electrode rings includes multiple electrode rings coaxially connected through connecting bearings. The multiple driving mechanisms are respectively fixed on the electrostatic separation shell, each driving mechanism corresponds to an electrode ring and drives the electrode ring to rotate, and a collecting bucket is provided under each electrode ring; The conveyor belt extends into a cylindrical structure formed by a plurality of electrode rings and a plurality of annular support frames and extends out from the cylindrical structure.

3. The device for collecting planetary soil, screening particles and sorting minerals according to claim 2, characterized in that: The electrostatic separation housing is provided with a plurality of brushes, each brush being arranged corresponding to an electrode ring; The electrode ring includes an insulating ring and two electrodes arranged on the outer side wall of the insulating ring, the ends of the two electrodes are arranged at intervals, and the brush is in contact with the electrodes; two groups of electrostatic separation through holes are provided on the insulating ring, and a group of electrostatic separation through holes is provided in the middle position of each electrode, each group of electrostatic separation through holes includes a plurality of electrostatic separation through holes arranged in a row along the axial direction of the electrode ring, and the collecting bucket is correspondingly arranged below a group of electrostatic separation through holes.

4. The device for collecting planetary soil, screening particles and sorting minerals according to claim 2, characterized in that: The driving mechanism includes a driving motor and a driving gear. The driving motor is fixed to the electrostatic separation housing through an L-shaped plate. The output shaft of the driving motor is coaxially connected to the driving gear and drives the driving gear to rotate. The central axis of the driving gear is arranged parallel to the central axis of the electrode ring. A circle of driving gear ring is provided on the electrode ring, and the driving gear is meshed with the driving gear ring.

5. The device for collecting planetary soil, screening particles and sorting minerals according to claim 2, characterized in that: A radial support rod is connected to the middle part of the annular support frame located at both ends of the electrostatic separation shell, or all the annular support frames are provided with a radial support rod; an axial support rod is provided on the radial support rod, and the axial support rod penetrates the cylindrical structure along the axial direction of the cylindrical structure, and the axial support rod extends into the primary screening mechanism, the conveyor belt is sleeved on the axial support rod, and a conveying motor for driving the conveyor belt is respectively provided at both ends of the axial support rod.

6. The device for collecting planetary soil, screening particles and sorting minerals according to claim 1, characterized in that: The separation mechanism comprises a magnetic separation part, which comprises a magnetic separation housing, a magnetic separation cavity, a magnetic medium net, a cam, a cam driving part and a spring, wherein the magnetic medium net is arranged in the magnetic separation cavity, the magnetic separation cavity is arranged in the magnetic separation housing, and a feeding port connected to the magnetic separation cavity is arranged on the top of the magnetic separation housing, and the conveyor belt is connected to the feeding port; The bottom of the magnetic separation chamber is exposed from the bottom of the magnetic separation shell and is connected to the first connecting frame through a spring. The cam driving unit is connected to the cam through a driving shaft and drives the cam to rotate to intermittently squeeze the first connecting frame, so that the magnetic separation chamber elastically connected to the first connecting frame vibrates; or, the top of the magnetic separation chamber is exposed from the top of the magnetic separation shell and is provided with a second connecting frame. The second connecting frame is connected to the top of the magnetic separation shell through a spring. The cam driving unit is connected to the cam through a driving shaft and drives the cam to rotate to intermittently squeeze the second connecting frame, so that the magnetic separation chamber elastically connected to the second connecting frame vibrates.

7. The device for collecting planetary soil, screening particles and sorting minerals according to claim 6, characterized in that: A discharge barrel extending from the bottom of the magnetic separation shell is provided at the bottom of the magnetic separation chamber, and a collecting box is provided under the magnetic separation shell. Two collecting areas are formed in the collecting box. A partition driving part and a partition baffle are provided at the collecting port of the collecting box. The partition driving part is connected to the partition baffle and drives the partition baffle to be arranged obliquely between one of the collecting areas and the discharge barrel.

8. The device for collecting planetary soil, screening particles and sorting minerals according to claim 6, characterized in that: An elevator and a feed plate are provided between the conveyor belt and the feed inlet, the lower end of the elevator is connected to the conveyor belt, the upper end of the elevator is connected to one end of the feed plate, and the other end of the feed plate is located above the feed inlet.

9. The device for collecting planetary soil, screening particles and sorting minerals according to claim 1, characterized in that: The sorting mechanism includes an electrostatic separation part and a magnetic separation part. The conveyor belt extending from the electrostatic separation part is connected to the feed port of the magnetic separation part. The power mechanism, the collection mechanism, the primary screening mechanism, the conveyor belt and the electrostatic separation part are each in two groups. The magnetic separation part is one. A group of power mechanism, the collection mechanism, the primary screening mechanism, the conveyor belt and the electrostatic separation part are respectively provided on both sides of the magnetic separation part.

10. The device for collecting planetary soil, screening particles and sorting minerals according to claim 1, characterized in that: The connector is eccentrically arranged on the connecting plate, and the connector is coaxially arranged with the collecting mechanism.

11. The device for collecting planetary soil, screening particles and sorting minerals according to claim 1, characterized in that: There are two outer sieve cylinders, one end of one outer sieve cylinder is fixed on the connecting plate, one end of the other outer sieve cylinder is connected to the other end of the inner sieve cylinder, and a gap is reserved between the other end of one outer sieve cylinder and the other end of the other outer sieve cylinder.

12. The device for collecting planetary soil, screening particles and sorting minerals according to claim 1, characterized in that: The power mechanism comprises a power motor, and the output shaft of the power motor is transmission-connected to one end of the primary screening mechanism through a bevel gear set.

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