Device integrating planet soil collection, particle size screening and mineral separation

Abstract

The invention relates to a device integrating planet soil collection, particle size screening and mineral separation, which comprises a power mechanism, a collection mechanism, a primary screening mechanism, a conveyor belt and a separation mechanism, the primary screening mechanism is horizontally arranged, and the power mechanism is in transmission connection with one end of the primary screening mechanism and drives the primary screening mechanism to rotate; the collecting mechanism is fixedly arranged on the peripheral side of the primary screening mechanism in a sleeving manner and synchronously rotates with the primary screening mechanism to collect planet soil, and the collected planet soil enters the primary screening mechanism to be primarily screened; the sorting mechanism is located at the other end of the preliminary screening mechanism, one part of the conveying belt is located in the preliminary screening mechanism, and the conveying belt is used for conveying the preliminarily screened planet soil to the sorting mechanism for sorting. The planet soil collecting mechanism, the primary screening mechanism, the conveying belt and the sorting mechanism are integrated, and the device has the advantages of being high in automation degree, simple in structure and multifunctional, and has the functions of efficiently collecting and screening planet soil with different particle sizes and conducting mineral separation according to needs.

Description

Technical Field

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

[0002] In the study 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, we can conduct research by collecting lunar soil and analyzing its composition. At the same time, we can use the oxygen-rich ilmenite in the lunar soil to make water and other basic manufacturing to meet the basic needs of human lunar exploration activities. Therefore, the efficient collection, sorting and enrichment of lunar soil is the basic work of lunar exploration.

[0003] The surface sampling of lunar soil mainly adopts shovel digging, shallow drilling and grinding methods according to the mission objectives, sampling environment and other factors. Among these three sampling methods, shovel digging has high sampling efficiency but is difficult to sample accurately, drilling can control the sampling depth but has low efficiency, and grinding has a wide coverage area but has a complex structure and is rarely used. Due to the high cost of space transportation and the complexity of the lunar environment, a small device that can be carried on the lunar rover is needed to collect lunar soil efficiently.

[0004] At present, the screening of lunar soil is mainly based on particle size. One of the more mature screening methods is dry screening, which mainly uses a series of sieves with different apertures to screen soil samples according to 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 is less efficient for fine particles (<20 microns), which may cause particle loss or sieve hole blockage.

[0005] The second more mature screening method is the electrostatic method, which mainly uses the difference in electrostatic force on lunar soil of different particle sizes in the electrostatic field to separate the lunar soil according to the particle size range. The advantage of this technology is that it will not cause physical damage to the lunar soil particles, retaining the original shape and structure of the particles. At the same time, it can be highly automated to improve accuracy and reduce human operation errors. The disadvantage of this technology is that the separation equipment is usually more complicated and costly.

[0006] The industry has a relatively mature technology for the beneficiation of ilmenite. In the process of ilmenite sorting and enrichment, gravity separation, flotation and magnetic separation are often used. Due to the magnetic characteristics of ilmenite itself, it is divided into weak magnetic substances. In a strong magnetic field environment, the minerals containing ilmenite components can deviate from their original trajectory, thereby achieving the purpose of sorting. Due to the high cost of space transportation and the microgravity environment, gravity separation and flotation commonly used on Earth are no longer applicable because they rely too much on large equipment or liquid reagents.

[0007] The "Study on the Design of Electrostatic Adsorption Lunar Soil Micro-sampler" shows that the dielectric constant of lunar soil varies with the particle size when the electrostatic separation technology is used to sort lunar soil particles. When the particle size is between 0 and 150μm, the dielectric constant of lunar soil increases with the increase of particle size. The larger 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 to make the adsorbed lunar soil fall into the lunar soil collection box. There are three main reasons why this technology cannot be effectively implemented on the lunar surface: ① The charged properties of lunar soil are unstable, and some lunar soil itself is not charged; ② A single electrode cannot effectively collect lunar soil of different particle sizes; ③ Lunar soil particles are of different sizes, and the charged properties of larger lunar soil are not obvious, so that the electrostatic force it is subjected to cannot offset other forces to achieve the effect of adsorption and separation.

[0008] The "Separation Mechanism and Experimental Research of Dry Vibration High Gradient Magnetic Separator" shows that in the process of dry vibration high gradient magnetic separation, the mineral particles are mainly affected by magnetic field force, vibration inertia force, fluid force, gravity, friction force, van der Waals force and cohesion between heterogeneous mineral particles. The up and down vibration makes 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 the magnetic field force, and the minerals with low magnetic permeability or non-magnetic minerals are shaken off. Dry vibration high gradient magnetic separation process-the free-falling mineral particles continue to vibrate in the magnetic medium network. Under the action of the magnetic field force, ilmenite is adsorbed on the magnetic medium, and the remaining materials are shaken off, and the minerals are separated by regular additional magnetic fields. The technology cannot be effectively implemented on the lunar surface mainly for the following reasons: the industrial mineral separation that has been realized has a large size of magnetic separators due to the complex composition of the mineral particles to be separated and the different sizes of the mineral particles, and the cost of extraterrestrial operations is high.

[0009] In this regard, in order to complete the efficient collection, sorting and enrichment of lunar soil under the special environment of the lunar surface, the present invention provides a device that integrates planetary soil collection, particle size screening and mineral sorting. Summary of the invention

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

[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 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.

[0019] The beneficial effect of adopting the above further scheme is: by arranging an electrostatic separation through hole on the insulating ring, it is convenient to let the electrostatically separated lunar soil fall into the collecting bucket through the electrostatic separation through hole for collection.

[0020] Furthermore, 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.

[0021] Furthermore, 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.

[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 separation mechanism includes a magnetic separation part, which includes 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;

[0024] 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.

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

[0026] Furthermore, 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, and two collecting areas are separated inside the collecting box; a partition driving part and a partition baffle are provided at the collecting port of the collecting box, and 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.

[0027] The beneficial effect of adopting the above further solution is that by providing a separation drive part and a separation baffle, different magnetically separated substances can be collected into different collection areas through the separation baffle.

[0028] Furthermore, 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.

[0029] Furthermore, 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 preliminary 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 preliminary screening mechanism, the conveyor belt and the electrostatic separation part are respectively provided on both sides of the magnetic separation part.

[0030] The beneficial effect of adopting the above further scheme is that the electrostatic separation part and the magnetic separation part are used together as the sorting mechanism, so that the planetary soil particles can be effectively sorted.

[0031] Further, the primary screening mechanism comprises an outer screen cylinder, an inner screen cylinder and a connecting plate, the outer screen cylinder is sleeved outside the inner screen cylinder and is arranged at a distance from the inner screen cylinder, one end of the outer screen cylinder and one end of the inner screen cylinder are fixed to 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;

[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 schematic structural 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 5It is a schematic diagram of the three-dimensional structure of the magnetic separation part of the present invention;

[0045] Figure 6 It is a schematic cross-sectional structure diagram of the magnetic separation part of the present invention;

[0046] Figure 7 The three-dimensional structure of the collection mechanism of the present invention is shown in FIG. Figure 1 ;

[0047] Figure 8 The three-dimensional structure of the collection mechanism of the present invention is shown in FIG. Figure 2 ;

[0048] Fig. 9 It is a three-dimensional structural schematic diagram of the primary screening mechanism of the present invention;

[0049] Fig.10 It is a schematic cross-sectional view of the power structure of the present invention.

[0050] In the accompanying 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, collecting mechanism; 201, annular collecting bucket; 202, cutting bucket; 203, cutting edge;

[0053] 300, primary 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 bucket; 507, connecting bearing; 508, L-shaped plate; 509, drive gear ring; 510, radial support rod; 511, axial support rod; 512, transmission motor; 513, roller; 514, electrostatic separation through hole; 515, electrode; 516, brush;

[0056] 600, magnetic separation unit; 601, magnetic separation housing; 602, magnetic separation chamber; 603, magnetic medium net; 604, spring; 605, cam; 606, cam drive unit; 607, first connecting frame; 608, second connecting frame; 609, discharge barrel; 610, feed barrel; 611, collection box; 612, separation drive unit; 613, separation 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, and the electrostatic separation part 500 includes an electrostatic separation shell 501, multiple driving mechanisms, multiple groups of electrode rings, multiple annular support frames 505 and multiple collecting buckets 506. The multiple annular support frames 505 are coaxially arranged in sequence and are all fixed on the electrostatic separation shell 501. A group of electrode rings is arranged between two adjacent annular support frames 505. The electrode rings are rotatably connected to the annular support frames 505 through a connecting bearing 507. The multiple groups of electrode rings are coaxially arranged in sequence; each group of electrode rings includes multiple electrode rings coaxially connected through a connecting bearing 507, and multiple driving mechanisms are respectively fixed on the electrostatic separation shell 501. Each driving mechanism corresponds to an electrode ring and drives the electrode ring to rotate. A collecting bucket 506 is correspondingly provided under each electrode ring; the conveyor belt 400 extends into the cylinder structure formed by the multiple groups of electrode rings and the multiple annular support frames 505 and extends from the cylinder structure. The structural form of the annular support frame and the electrode ring is adopted, so that the electrode ring can be effectively and stably supported.

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

[0064] Specifically, Figure 3 and Figure 4 As shown, the electrode ring includes two insulating half cylinders, which are butt-jointed to form an electrode ring of a ring-shaped structure. By arranging an electrostatic separation through hole on the insulating ring, it is convenient to drop the electrostatically separated lunar soil into a collection bucket through the electrostatic separation through hole for collection.

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

[0066] like Figure 3 and Figure 4 As shown, in this embodiment, radial support rods 510 are 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 annular support frames 505; axial support rods 511 are provided on the radial support rods 510, and the axial support rods 511 penetrate the cylinder structure along the axial direction of the cylinder structure, and the axial support rods 511 extend into the primary screening mechanism 300, and the conveyor belt 400 is sleeved on the axial support rods 511, and the two ends of the axial support rods 511 are respectively provided with conveying motors 512 for driving the conveyor belt 400 to run. 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.

[0067] like Figure 2 , Figure 5-6 As shown, the separation mechanism of this embodiment includes a magnetic separation part 600.

[0068] like Figure 2 As shown, an optional scheme of the magnetic separation part 600 is that the magnetic separation part 600 includes a magnetic separation housing 601, a magnetic separation cavity 602, a magnetic medium net 603, a cam 605, a cam driving part 606 and a spring 604, wherein the magnetic medium net 603 is arranged in the magnetic separation cavity 602, the magnetic separation cavity 602 is arranged in the magnetic separation housing 601, and the top of the magnetic separation housing 601 is provided with a feeding port connected to the magnetic separation cavity 602, and the conveyor belt 400 is connected to the feeding port; the bottom of the magnetic separation cavity 602 is exposed from the bottom of the magnetic separation housing 601 and is connected to the first connecting frame 607 through a spring 604, and 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 connecting frame 607, so that the magnetic separation cavity 602 elastically connected to the first connecting frame 607 vibrates;

[0069] like Figure 5-6As shown, another optional scheme of the magnetic separation part 600 of this embodiment is that the top of the magnetic separation chamber 602 is exposed from the top of the magnetic separation housing 601 and is provided with a second connecting frame 608, and the second connecting frame 608 is connected to the top of the magnetic separation housing 601 through a spring 604, and 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 second connecting frame 608, so that the magnetic separation chamber 602 elastically connected to the second connecting frame 608 vibrates. A feed barrel 610 is provided at the top of the magnetic separation chamber 602, and the feed barrel 610 is used to input planetary soil particles into the magnetic separation chamber 602. By providing a cam and a cam driving part, the material that is not adsorbed by the magnetic medium net can be shaken off to the bottom of the magnetic separation chamber.

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

[0071] like Figure 1 and Figure 2 As shown, in this embodiment, an elevator 700 and a feed plate 701 are provided between the conveyor belt 400 and the feed inlet, the lower end of the elevator 700 is connected to the conveyor belt 400, the upper end of the elevator 700 is connected to one end of the feed plate 701, and the other end of the feed plate 701 is located above the feed inlet.

[0072] like Figure 1As shown, the separation 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 is connected to the feed 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 two groups. The magnetic separation unit 600 is one. A group of power mechanism 100, the collection mechanism 200, the primary screening mechanism 300, the conveyor belt 400 and the electrostatic separation unit 500 are respectively arranged on both sides of the magnetic separation unit 600. The electrostatic separation unit and the magnetic separation unit are used together as the separation mechanism, and the planetary soil particles can be effectively separated. Two sets of power mechanisms 100, a collection mechanism 200, a primary screening mechanism 300, a conveyor belt 400 and an electrostatic separation section 500 are symmetrically arranged on both sides of the magnetic separation section 600. The entire device is distributed in a symmetrical axis shape. One end of the support arm housing 106 is hung on a vehicle body or other device. A motor is installed in the support arm, which transmits power to the collection mechanism and the primary screening mechanism through a transmission shaft and a bevel gear and drives them to rotate.

[0073] like Figure 1 and Fig. 9 As shown, the primary screening mechanism 300 of this embodiment includes an outer sieve cylinder 301, an inner sieve cylinder 302 and a connecting plate 303. The outer sieve cylinder 301 is sleeved outside the inner sieve cylinder 302 and is arranged at intervals from the inner sieve cylinder 302. One end of the outer sieve cylinder 301 and one end of the inner sieve cylinder 302 are fixed on the connecting plate 303, and the other end of the outer sieve cylinder 301 is connected to the other end of the inner sieve 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 in the inner sieve cylinder 302. The collection mechanism 200 is sleeved on the outer sieve cylinder 301 and is fixedly connected to the outer sieve cylinder 301 or the connecting plate 303. 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. The inner sieve directly limits the particle size of the planetary soil that can enter the subsequent mechanism.

[0074] like Figure 7 to Figure 9 As shown, the connector 304 of this embodiment is eccentrically arranged on the connecting plate 303, and the connector 304 is coaxially arranged with the collecting mechanism 200. The eccentrically arranged connector is used to eccentrically arrange the primary screening mechanism in the collecting mechanism, so that when collecting planetary soil, eccentric vibration is realized, so that the primary screening effect is better and a better screening effect is achieved.

[0075] like Fig. 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 Fig.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] The conveyor belt 400 of this embodiment starts from the inside of the primary screening mechanism 300 and ends at the feeding port of the magnetic separation part 600. An axial support rod 511 can be set in the primary screening mechanism 300 and the electrostatic separation part 500. The axial support rod 511 is fixed on the radial support rod 510. Wheel axles are respectively provided at both ends of the axial support rod 511, and rollers 513 are rotatably connected to the wheel axles. Two rollers 513 are respectively provided at both ends 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 rod 511 and the roller 513. The control of the roller 513 is achieved by controlling the start and stop and the rotation speed of the conveying motor 512, thereby controlling the conveying rate of the conveyor belt, and controlling the screening and sorting rate of the planetary soil.

[0080] like Figure 1 As shown, in this embodiment, the planetary soil passing through the primary screening mechanism 300 is transported to the downstream electrostatic separation unit 500 through the conveyor belt 400. The electrodes of the electrostatic separation unit 500 apply different voltages to create different electric field strengths to adsorb and separate the planetary soil from large to small. During the rotation of the electrodes, the power is turned on and off regularly, so that the planetary soil particles adsorbed on the electrodes fall into the collection bucket through the electrostatic separation 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 sent to the magnetic separation section by the conveyor belt for magnetic separation. The planetary soil on the conveyor belt is lifted to the feeding port of the magnetic separation section by the elevator. The magnetic separation cavity applies a magnetic field. Under the joint action of the cam and the spring, the magnetic separation cavity vibrates up and down, causing the ilmenite with high magnetic permeability to repeatedly cut the magnetic field. The ilmenite is adsorbed on the magnetic medium net by the magnetic field force, and the rest is shaken into a collection area of ​​the collection box; when a certain amount of ilmenite on the magnetic medium net is collected, the electromagnetic field of the magnetic separation cavity disappears, and the partition baffle is hit to one side of the collection box. The ilmenite originally adsorbed on the magnetic medium net is shaken off to another collection area of ​​the collection box, thereby realizing the sorting of minerals in the planetary soil.

[0081] In view of the particularity of the in-situ efficient collection and sorting and enrichment of lunar soil, the device of this embodiment overcomes the means of special machines and adopts an integrated and modular design scheme to concentrate multiple functions in one device, thereby reducing cost expenditure; the collection mechanism adopts a bucket design, so that the collection mechanism can achieve efficient collection without the need for a separate dump bin, and the primary screening mechanism can also be set inside the collection mechanism, which greatly reduces the size of the equipment and improves the efficiency of lunar soil collection and sorting; a graded screening scheme is adopted, first using the dry screening method for mechanical primary screening to control the lunar soil particle size, and then using electrostatic separation to finely screen lunar soil in different particle size ranges to improve screening accuracy; due to the high cost of space transportation and the microgravity environment, the gravity separation and flotation commonly used on Earth rely too much on large equipment or liquid reagents and are no longer applicable, and the use of dry magnetic separation for mineral processing improves the reliability of the equipment.

[0082] The device of this embodiment integrates planetary soil collection, particle size screening and mineral sorting, and integrates the planetary soil collection mechanism, primary screening mechanism, conveyor belt and sorting mechanism into one, which has the advantages of high degree of automation, simple structure and multi-function integration, and has the functions of efficiently collecting and screening planetary soil of different particle sizes, and selecting minerals on demand. The device of this embodiment can efficiently collect and screen lunar soil, and sort ilmenite from planetary soil, providing experimental consumables and material guarantees for realizing planetary surface exploration.

[0083] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

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

[0085] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, 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 and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this 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, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0088] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary 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 includes 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. 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. The conveyor belt is used to convey the planetary soil that has passed the primary screening to the sorting mechanism for sorting.

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 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.

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

12. The device for collecting planetary soil, screening particles and sorting minerals according to claim 10, 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.

13. The device for collecting planetary soil, screening particles and sorting minerals according to claim 1, characterized in that: 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.

14. 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.

Images