Alloy grinding equipment and alloy automatic sample preparation system

Abstract

The present invention discloses an alloy grinding device and an automatic alloy sample preparation system, which belong to the technical field of metal grinding and sample preparation. The turntable is rotatably mounted on a frame, and the turntable is mounted on the grinding assembly through an adjusting seat assembly; the grinding assembly includes an upper half shell and a lower half shell that are relatively buckled, and the axis has a rotating main shaft; a feed hole is provided on the upper half shell, and an upper grinding assembly is installed in the upper half shell; a discharge hole is provided at the lower end center of the lower half shell, and a lower grinding assembly is installed in the lower half shell, and a spring assembly is connected between the lower grinding assembly and the upper grinding assembly; a power device for driving the rotating main shaft is fixed on the upper half shell; a sweeping brush for cleaning the inner bottom surface of the lower half shell is fixed at the lower end of the rotating main shaft. The present invention adopts a method of grinding in which the circumference of the grinding disc cooperates with the conical wall surface, and as the grinding disc rotates, it can provide greater grinding force and improve grinding efficiency; a funnel-shaped grinding structure that is symmetrical up and down is adopted, and multi-layer and multi-stage grinding is performed to improve grinding accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of metal grinding and sample preparation, in particular to alloy grinding equipment and an automatic alloy sample preparation system. Background Art

[0002] Cemented carbide powder is a metal powder formed by partial or complete alloying of two or more components. It is generally made by first crushing the alloy and then grinding it through a grinder.

[0003] Existing grinding machines typically use two rotating grinding discs positioned relative to each other to grind metal particles. For example, a Chinese patent (CN216573340U) discloses a cemented carbide powder grinding device that includes a support tray; a mounting sleeve, located outside the support tray, and a locking bolt; a bottom connecting disc that snaps into place within the support tray; and a top connecting disc with a feed hole above the bottom connecting disc. A grinding assembly grinds the alloy, and the grinding assemblies are clamped between the bottom and top connecting discs.

[0004] The aforementioned grinding device generally operates as follows: alloy particles enter between two grinding discs from the upper grinding disc. As the two grinding discs rotate relative to each other, they gradually grind the alloy particles. During the grinding process, the alloy particles gradually move outward and away from the grinding discs. However, some drawbacks of this device include: the surface contact between the two grinding discs creates significant friction, which affects grinding efficiency; and the possibility that some alloy particles can slip outward along the corners of the grinding strips on the grinding discs, resulting in inaccurate or uneven grinding. Summary of the Invention

[0005] To address the shortcomings of the prior art, the present invention provides an alloy grinding device and an automatic alloy sample preparation system. The alloy grinding device utilizes a grinding disc with a conical wall surface for grinding, providing greater grinding force. The overall use of a funnel-shaped multi-stage grinding disc improves grinding accuracy.

[0006] The present invention adopts the following technical solution: an alloy grinding device,

[0007] It includes a frame and a vertical turntable rotatably mounted on the frame, and a grinding assembly is mounted on the turntable via an adjusting seat assembly;

[0008] The grinding assembly includes an upper half shell and a lower half shell that are relatively fastened together, the inner surfaces of the upper half shell and the lower half shell are conical surfaces, and the axes of the upper half shell and the lower half shell have a rotating main axis;

[0009] A feed hole is provided on the upper half shell, and an upper grinding assembly is installed in the upper half shell;

[0010] The upper grinding assembly includes a plurality of upper grinding discs mounted on the rotating main shaft, the plurality of upper grinding discs being stacked and fixed together; the upper grinding assembly also includes an upper conical grinding cylinder mounted and fixed within the upper half shell, the inner wall of the upper conical grinding cylinder being fixedly mounted with a grinding ring that cooperates with the circumference of the upper grinding discs; the centers of the plurality of upper grinding discs do not overlap and are arranged eccentrically relative to the rotating main shaft, and a grinding block is fixedly mounted on the upper grinding discs near the grinding rings;

[0011] A discharge hole is provided at the center of the lower end of the lower half shell, a lower grinding assembly symmetrical to the upper grinding assembly is installed in the lower half shell, and a spring assembly is connected between the lower grinding assembly and the upper grinding assembly;

[0012] The upper end of the rotating main shaft passes through the upper half shell, and a power device for driving the rotating main shaft is fixed on the upper half shell; the lower end of the rotating main shaft is fixed with a sweeping brush for cleaning the inner bottom surface of the lower half shell.

[0013] Preferably, the lower port of the upper half shell is provided with an inner stop, and a pressure ring for pressing the upper conical grinding cylinder is fixed in the inner stop.

[0014] Preferably, the power device includes a motor, and the motor is connected to the rotating main shaft through a reducer.

[0015] Preferably, the inner bottom surface of the lower half shell is a conical surface, and a grinding strip that matches the inner bottom surface of the lower half shell is fixed on the sweeping brush.

[0016] Preferably: the spring assembly includes a double-layer tube sliding sleeve;

[0017] The inner cylinder of the double-layer cylinder sliding sleeve is slidably mounted on the rotating main shaft, the upper end of the outer cylinder of the double-layer cylinder sliding sleeve is slidably mounted with an upper guide sleeve, the upper guide sleeve is fixedly connected to the upper grinding assembly, and the lower end of the outer cylinder of the double-layer cylinder sliding sleeve is slidably mounted with a lower guide sleeve, the lower guide sleeve is fixedly connected to the lower grinding assembly.

[0018] An upper thrust spring is connected between the upper end of the double-layer cylinder sliding sleeve and the upper grinding assembly, and a lower thrust spring is connected between the lower end of the double-layer cylinder sliding sleeve and the lower grinding assembly.

[0019] Preferably: the adjustment seat assembly includes a fixed support block fixed on the turntable and a dynamic support block slidably mounted on the turntable; the fixed support block is fixedly connected to the upper half shell of the grinding assembly, and the dynamic support block is fixedly connected to the lower half shell of the grinding assembly; a locking mechanism for controlling the dynamic support block is also fixed on the turntable.

[0020] Preferably: the locking mechanism includes a dovetail slide fixed on the turntable, and a screw rotatably installed on the turntable, the screw and the dovetail slide are parallel to the upper shell and the lower shell; the dynamic support block is slidably installed on the dovetail slide, and the dynamic support block is threadedly connected to the screw; an adjusting disk is fixed to one end of the screw, and a handle is connected to the adjusting disk for disassembly.

[0021] Preferably: a rotating shaft is rotatably installed on the frame, one end of the rotating shaft is fixedly connected to the turntable through a flange, the other end of the rotating shaft is connected to a transmission wheel, and the transmission wheel is connected to a power component for driving the transmission wheel to rotate; a positioning seat is also installed on the frame, and a receiving cup is placed on the positioning seat opposite to the discharge hole of the grinding assembly.

[0022] The double-action jaw crusher includes a box-type frame, a feed hopper is installed at the upper end of the frame, and a dust removal port is opened at the lower end of the frame; a crushing assembly is installed in the frame, and a linear feeder is provided below the crushing assembly; the feeding trough on the linear feeder cooperates with the discharge port of the crushing assembly; a discharge port is opened on the side of the frame close to the feeding trough, and a receiving box that cooperates with the discharge port of the feeding trough is placed at the discharge port.

[0023] Preferably, one end of the rotary shaft away from the turntable is connected to a counterweight or a rotary shaft of another alloy grinding device.

[0024] An automatic alloy sampling system is provided, wherein a secondary reducing machine, an automatic packaging machine and a plurality of alloy grinding devices are arranged around a handling robot; a primary reducing machine is provided on one side of the secondary reducing machine, a double-action jaw crusher is provided on one side of the primary reducing machine, and a lifting feeder is provided on one side of the double-action jaw crusher.

[0025] The beneficial effects of the present invention are:

[0026] The alloy grinding equipment adopts the grinding method of the grinding disc circumference and the conical wall surface. As the grinding disc rotates, it can provide greater grinding force and improve grinding efficiency.

[0027] The alloy grinding equipment adopts a symmetrical funnel-shaped grinding structure with multiple layers of grinding discs arranged eccentrically, and the alloy scrap is ground from top to bottom. Driven by the turntable, the grinding assembly can be inverted to grind the alloy material a second time, improving the grinding accuracy. In addition, the upper and lower grinding structures of the alloy grinding equipment can be opened and closed, which is very convenient for replacing the internal grinding components.

[0028] The automatic alloy sample preparation system uses a robot to replace workers and cooperates with other equipment to complete various operations in sequence, realizing full automation of sample preparation and greatly improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic structural diagram of an alloy grinding device according to an embodiment of the present invention.

[0031] Figure 2 Schematic diagram of the structure of the adjustment seat assembly in embodiment 1 of the present invention.

[0032] Figure 3 Schematic diagram of the structure of the grinding assembly in Example 1 of the present invention.

[0033] Figure 4 for Figure 3 Schematic diagram of the arrangement of the middle and upper grinding discs.

[0034] Figure 5 for Figure 3 Schematic diagram of the structure of the spring assembly at A.

[0035] Figure 6 This is a schematic structural diagram of the combination of two alloy grinding devices in Example 1 of the present invention.

[0036] Description of reference numerals: 1, frame; 2, rotary shaft; 3, transmission wheel; 4, flange; 5, turntable;

[0037] 6. Adjustment seat assembly; 61. Fixed support block; 62. Dynamic support block; 63. Lead screw; 64. Dovetail slide; 65. Adjustment disk;

[0038] 7. Grinding assembly;

[0039] 71. Upper half shell; 711. Feed hole; 712. Pressing ring;

[0040] 72. Lower half shell; 721. Discharge hole;

[0041] 73. Rotating spindle;

[0042] 74. Upper grinding assembly; 741. Upper grinding disc; 742. Grinding block; 743. Upper conical grinding cylinder; 744. Grinding ring;

[0043] 75. Lower grinding assembly; 76. Motor; 77. Reducer; 78. Sweep brush;

[0044] 79. Spring assembly; 791. Upper thrust spring; 792. Upper guide sleeve; 793. Double-layer sleeve; 794. Lower guide sleeve; 795. Lower thrust spring;

[0045] 8. Material receiving cup; 9. Positioning seat.

[0046] Figure 7 Schematic diagram of the structure of the automatic alloy sample preparation system according to embodiment 2 of the present invention.

[0047] Explanation of the accompanying symbols: 100, lifting feeder; 200, double-action jaw crusher; 300, primary reducing machine; 400, secondary reducing machine; 500, alloy grinding equipment; 600, handling robot; 700, automatic packaging machine.

[0048] Figure 8 This is a front view of a double-acting jaw crusher according to embodiment 3 of the present invention.

[0049] Figure 9 for Figure 8 Middle BB view.

[0050] Explanation of the accompanying reference numerals: 201, feed hopper; 202, frame; 203, discharge port; 204, crushing assembly; 205, feed chute; 206, linear feeder; 207, receiving box; 208, dust removal port. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0052] Example 1

[0053] Combine Figure 1 As shown, an alloy grinding device includes a box body, and various components are installed in the box body. A vertical beam is fixed on the frame 1, and a rotating shaft 2 is installed on the vertical beam for vertical rotation. The left end of the rotating shaft 2 is fixedly connected to the turntable 5 through a flange 4, and the turntable 5 is arranged vertically. A transmission wheel 3 is fixedly installed on the right end of the rotating shaft 2. The transmission wheel 3 is connected to a power component, such as a reduction motor, which is used to control the slow rotation of the rotating shaft 2. A grinding assembly 7 is installed on the turntable 5 through an adjusting seat assembly 6. A receiving cup 8 is placed on the positioning seat 9 of the frame 1, and the receiving cup 8 is opposite to the discharge hole 721 of the grinding assembly 7.

[0054] Combine Figure 3As shown, the grinding assembly 7 comprises an upper housing 71 and a lower housing 72 that engage with each other. A rotating spindle 73 is located between the upper and lower housings 71 and 72. The upper end of the rotating spindle 73 passes through the upper housing 71. The power unit comprises a motor 76 and a reducer 77 fixed to the upper housing 71. The motor 76 is connected to the rotating spindle 73 via the reducer 77 to drive the rotating spindle 73 in rotation.

[0055] The inner surface of the upper shell 71 is a conical surface. A feed hole 711 is provided on the upper end surface of the upper shell 71 . A grinding assembly 74 is installed in the upper shell 71 .

[0056] The upper grinding assembly 74 includes multiple upper grinding discs 741 mounted on the rotating spindle 73. The multiple upper grinding discs 741 are stacked and fixed together, and can move a certain distance on the rotating spindle 73. An upper conical grinding cylinder 743 is mounted and fixed within the upper half shell 71. The lower end of the upper half shell 71 defines an internal stop, in which a pressure ring 712 is fixed. The pressure ring 712 is used to compress the upper conical grinding cylinder 743.

[0057] Figure 4 This is a schematic diagram of the eccentric arrangement of multiple upper grinding discs 741. For ease of understanding, the upper conical grinding cylinder 743 is simplified to a straight cylinder, and the upper grinding discs 741 are discs of equal diameter. It can be seen that the centers of the multiple upper grinding discs 741 do not overlap and are eccentric relative to the rotating main shaft 73. Furthermore, the centers of the multiple upper grinding discs 741 are arranged equidistantly around the rotating main shaft 73, forming a spiral-like structure. A grinding ring 744 is embedded and fixed to the inner wall of the upper conical grinding cylinder 743, which mates with the circumference of the upper grinding discs 741. A grinding block 742 is embedded and fixed to the upper grinding disc 741 near the grinding ring 744. The surface of the grinding block 742 and the surface of the grinding ring 744 form mutually mating conical surfaces.

[0058] The inner surface of the lower half-shell 72 is conical, with a discharge hole 721 defined at the center of its lower end. A lower grinding assembly 75 is mounted within the lower half-shell 72. The lower grinding assembly 75 is symmetrical with the upper grinding assembly 74 and will not be further described in this embodiment. The inner bottom surface of the lower half-shell 72 is conical, with the discharge hole 721 located at the lowest point of the bottom surface. A sweeping brush 78 is secured to the lower end of the rotating spindle 73. Abrasive strips are affixed to the sweeping brush 78, which mates with the inner bottom surface of the lower half-shell 72. The sweeping brush 78 cleans the inner bottom surface of the lower half-shell 72 and further grinds the material. The width of the sweeping brush 78 should be smaller than the discharge hole 721 to ensure smooth material flow. Furthermore, both ends of the lower grinding assembly 75 and the upper grinding assembly 74 may be provided with raised conical or curved surfaces to prevent material accumulation.

[0059] Combine Figure 5As shown, the spring assembly 79 is connected between the lower grinding assembly 75 and the upper grinding assembly 74. Specifically, the inner tube of the double-layered tube sliding sleeve 793 slides onto the rotating main shaft 73, and the upper guide sleeve 792 slides onto the upper end of the outer tube of the double-layered tube sliding sleeve 793. The upper guide sleeve 792 is fixedly connected to the upper grinding assembly 74. The lower guide sleeve 794 slides onto the lower end of the outer tube of the double-layered tube sliding sleeve 793 and is fixedly connected to the lower grinding assembly 75. An upper thrust spring 791 is connected between the upper end of the double-layered tube sliding sleeve 793 and the upper grinding assembly 74, and a lower thrust spring 795 is connected between the lower end of the double-layered tube sliding sleeve 793 and the lower grinding assembly 75.

[0060] Combine Figure 2 As shown, the adjustment seat assembly 6 includes a fixed support block 61 and a movable support block 62. The fixed support block 61 is fixed to the turntable 5, and the movable support block 62 is slidably mounted on a dovetail guide 64 on the surface of the turntable 5. The fixed support block 61 is fixedly connected to the upper half-shell 71, and the movable support block 62 is fixedly connected to the lower half-shell 72. A lead screw 63 is rotatably mounted on the turntable 5, and the lead screw 63 and dovetail guide 64 are parallel to the upper half-shell 71 and the lower half-shell 72. The movable support block 62 is threadedly connected to the lead screw 63. An adjustment disk 65 is fixed to one end of the lead screw 63, and a handle is detachably connected to the adjustment disk 65. By rotating the adjustment disk 65 and the lead screw 63 using the handle, the upper half-shell 71 and the lower half-shell 72 can be controlled to close or separate. The lead screw 63 in this embodiment can also be replaced with an oil cylinder or a pneumatic cylinder, which can more conveniently control the closing or separation of the upper half-shell 71 and the lower half-shell 72.

[0061] like Figure 6 As shown, the two alloy grinding devices in this embodiment can connect the rotating shaft 2 to form a double station to balance the rotating shaft 2. A counterweight can also be connected to one end of the rotating shaft 2 of a single alloy grinding device to balance the rotating shaft 2.

[0062] Working principle:

[0063] Open the feed hole 711, and the crushed alloy enters the upper half shell from the feed hole 711, and then close the feed hole 711;

[0064] The motor 76 drives the rotating spindle 73 through the reducer 77, and the grinding assembly 7 starts to work. The upper grinding disc 741 and the upper conical grinding cylinder 743 in the upper grinding assembly 74 rotate relative to each other to grind the crushed alloy. The crushed alloy gradually flows downward into the lower grinding assembly 75, and the lower grinding assembly 75 continues to grind the crushed alloy. The sweeping brush 78 at the bottom also plays a grinding role.

[0065] During operation, the reduction motor controls the rotary shaft 2 and the turntable 5 to rotate slowly, and the grinding assembly 7 begins to tilt, so that the crushed alloy below can flow back again, and the lower grinding assembly 75 and the upper grinding assembly 74 begin secondary grinding; in a more specific setting, the grinding assembly 7 stays in the horizontal state and the vertical state for a certain period of time;

[0066] After the grinding is completed, the grinding assembly 7 returns to the initial vertical state, the discharge hole 721 opens, and the sweeping brush 78 rotates to ensure that the material falls smoothly into the receiving cup 8.

[0067] Example 2

[0068] Combine Figure 7 As shown, based on the above-mentioned embodiment 1, an automatic alloy sample preparation system includes: a secondary divider 400, an automatic packaging machine 700, and three alloy grinding devices 500 are arranged around a handling robot 600. The handling robot 600 transports materials between the secondary divider 400, the automatic packaging machine 700, and the three alloy grinding devices 500. A primary divider 300 is provided on one side of the secondary divider 400, a double-action jaw crusher 200 is provided on one side of the primary divider 300, and a lifting feeder 100 is provided on one side of the double-action jaw crusher 200.

[0069] During operation, incoming material is placed into the lifting feeder 100, which lifts and pours it into the double-action jaw crusher 200. After being crushed by the double-action jaw crusher 200, the material enters the primary reducer 300. The primary reducer 300 reduces and separates a selected sample, with the remainder entering a discard bin. The selected sample then enters the secondary reducer 400. The secondary reducer 400 separates a retained sample and an analysis sample, with the remainder entering a waste collection box. The handling robot 600 transports the analysis sample to the alloy grinding machine 500. After the alloy grinding machine 500 grinds the analysis sample, the handling robot 600 transfers the ground material to the automatic packaging machine 700 for packaging.

[0070] Example 3

[0071] Combine Figure 8 and Figure 9As shown, the double-action jaw crusher 200 in the second embodiment includes a box-shaped frame 202, with a feed hopper 201 mounted on the upper end and a dust removal port 208 at the lower end. The dust removal port 208 is connected to an external dust removal device for removing dust from the interior of the frame 202 and clearing particulate dust generated by the operation of the crushing assembly 204. The crushing assembly 204 is fixed within the frame 202, and a linear feeder 206 is positioned below the crushing assembly 204. A feed chute 205 on the linear feeder 206 aligns with the discharge port of the crushing assembly 204, allowing crushed material from the crushing assembly 204 to fall into the feed chute 205. A discharge port 203 is located on one side of the frame 202 near the feed chute 205. A material receiving box 207 is positioned at the discharge port 203 to receive material delivered by the feed chute 205.

[0072] During operation, the lifting feeder 100 lifts the material and pours it into the feed hopper 201 of the double-action jaw crusher 200, and the material falls along the feed hopper 201 to the crushing assembly 204; after the crushing assembly 204 is started, the material is crushed, and the crushed material falls to the feeding chute 205; the feeding chute 205 transports the crushed material to the receiving box 207, thus completing the material crushing work.

[0073] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An alloy grinding device, Its characteristics are: It comprises a frame (1) and a vertical turntable (5) rotatably mounted on the frame (1), wherein a grinding assembly (7) is mounted on the turntable (5) via an adjustment seat assembly (6); The grinding assembly (7) comprises an upper half shell (71) and a lower half shell (72) that are relatively engaged, the inner surfaces of the upper half shell (71) and the lower half shell (72) are conical surfaces, and the axes of the upper half shell (71) and the lower half shell (72) have a rotating main shaft (73); The upper half shell (71) is provided with a feed hole (711), and an upper grinding assembly (74) is installed in the upper half shell (71); The upper grinding assembly (74) includes a plurality of upper grinding discs (741) mounted on the rotating main shaft (73), and the plurality of upper grinding discs (741) are stacked and fixed together; the upper grinding assembly (74) also includes an upper conical grinding cylinder (743) mounted and fixed in the upper half shell (71), and a grinding ring (744) that matches the circumference of the upper grinding disc (741) is embedded and fixed on the inner wall of the upper conical grinding cylinder (743); the centers of the plurality of upper grinding discs (741) do not overlap and are eccentrically arranged relative to the rotating main shaft (73), and a grinding block (742) is embedded and fixed in the portion of the upper grinding disc (741) close to the grinding ring (744); A discharge hole (721) is provided at the center of the lower end of the lower half shell (72), a lower grinding assembly (75) symmetrical to the upper grinding assembly (74) is installed in the lower half shell (72), and a spring assembly (79) is connected between the lower grinding assembly (75) and the upper grinding assembly (74); The upper end of the rotating main shaft (73) passes through the upper half shell (71), and a power device for driving the rotating main shaft (73) is fixed on the upper half shell (71); and a sweeping brush (78) for cleaning the inner bottom surface of the lower half shell (72) is fixed on the lower end of the rotating main shaft (73).

2. The alloy grinding equipment according to claim 1, characterized in that: The lower end of the upper half shell (71) is provided with an inner stop, in which a pressure ring (712) for pressing the upper conical grinding cylinder (743) is fixed; The inner bottom surface of the lower half shell (72) is a conical surface, and a grinding strip that matches the inner bottom surface of the lower half shell (72) is fixed on the sweeping brush (78).

3. The alloy grinding equipment according to claim 1, characterized in that: The power device comprises a motor (76), and the motor (76) is connected to the rotating main shaft (73) via a reducer (77).

4. The alloy grinding equipment according to claim 1, characterized in that: The spring assembly (79) includes a double-layered sleeve (793); The inner cylinder of the double-layer cylinder sliding sleeve (793) is slidingly sleeved on the rotating main shaft (73); the upper end of the outer cylinder of the double-layer cylinder sliding sleeve (793) is slidingly sleeved with an upper guide sleeve (792); the upper guide sleeve (792) is fixedly connected to the upper grinding assembly (74); the lower end of the outer cylinder of the double-layer cylinder sliding sleeve (793) is slidingly sleeved with a lower guide sleeve (794); the lower guide sleeve (794) is fixedly connected to the lower grinding assembly (75). An upper thrust spring (791) is connected between the upper end of the double-layered sleeve (793) and the upper grinding assembly (74), and a lower thrust spring (795) is connected between the lower end of the double-layered sleeve (793) and the lower grinding assembly (75).

5. The alloy grinding equipment according to claim 1, characterized in that: The adjustment seat assembly (6) comprises a fixed support block (61) fixed on the turntable (5) and a dynamic support block (62) slidably mounted on the turntable (5); the fixed support block (61) is fixedly connected to the upper half shell (71) of the grinding assembly (7), and the dynamic support block (62) is fixedly connected to the lower half shell (72) of the grinding assembly (7); and a locking mechanism for controlling the dynamic support block (62) is also fixed on the turntable (5).

6. The alloy grinding equipment according to claim 5, characterized in that: The locking mechanism comprises a dovetail slideway (64) fixed on the turntable (5), and a lead screw (63) rotatably mounted on the turntable (5), wherein the lead screw (63) and the dovetail slideway (64) are parallel to the upper half shell (71) and the lower half shell (72); the movable support block (62) is slidably mounted on the dovetail slideway (64), and the movable support block (62) is threadedly connected to the lead screw (63); an adjusting disk (65) is fixed at one end of the lead screw (63), and a handle is connected to the adjusting disk (65) for disassembly.

7. The alloy grinding equipment according to claim 1, characterized in that: A rotary shaft (2) is rotatably mounted on the frame (1), one end of the rotary shaft (2) is fixedly connected to the turntable (5) via a flange (4), the other end of the rotary shaft (2) is connected to a transmission wheel (3), and the transmission wheel (3) is connected to a power assembly for driving the transmission wheel (3) to rotate; a positioning seat (9) is also mounted on the frame (1), and a receiving cup (8) is placed on the positioning seat (9) and is opposite to the discharge hole (721) of the grinding assembly (7).

8. The alloy grinding equipment according to claim 7, characterized in that: One end of the rotary shaft (2) away from the turntable (5) is connected to a counterweight or a rotary shaft (2) of another alloy grinding device.

9. An automatic alloy sample preparation system, using the alloy grinding equipment according to any one of claims 1 to 8, characterized in that: A secondary reducing machine (400), an automatic packaging machine (700) and a plurality of alloy grinding devices (500) are arranged around the transporting robot (600); a primary reducing machine (300) is provided on one side of the secondary reducing machine (400), a double-acting jaw crusher (200) is provided on one side of the primary reducing machine (300), and a lifting feeder (100) is provided on one side of the double-acting jaw crusher (200).

10. The automatic alloy sample preparation system according to claim 9, characterized in that: The double-acting jaw crusher (200) comprises a box-type frame (202), a feed hopper (201) is installed at the upper end of the frame (202), and a dust removal port (208) is provided at the lower end of the frame (202); a crushing assembly (204) is installed in the frame (202), and a linear feeder (206) is provided below the crushing assembly (204); a feed trough (205) on the linear feeder (206) cooperates with a discharge port of the crushing assembly (204); a discharge port (203) is provided on a side of the frame (202) close to the feed trough (205), and a receiving box (207) is placed at the discharge port (203) to cooperate with the discharge port of the feed trough (205).

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