Multi-stage particle size adjusting grinding machine for material sample preparation

Abstract

The invention discloses a multi-stage particle size adjusting grinding machine for material sample preparation, which comprises a grinding machine body, a grinding box and a conical grinding plate, and further comprises a plurality of groups of auxiliary grinding assemblies, and each auxiliary grinding assembly comprises a grinding plate, a cleaning plate and a bottom plate; and the number of the adjusting assemblies is multiple, and each adjusting assembly is composed of a transmission protruding component and a rotating component. The optimal friction force can be selected according to different material samples, the grinding surface does not need to be replaced, so that the working efficiency is effectively improved, different friction forces can be changed through the multifunctional conical grinding plate, the grinding device is applied to grinding of different material samples, the detained powder material samples can be cleaned, and the grinding efficiency is improved. And therefore, the practicability and functionality of the grinding machine are further improved.

Description

Technical Field

[0001] The present invention relates to a grinder suitable for material samples, and more particularly to a grinder with multi-stage particle size adjustment for material sample preparation. Background Art

[0002] The material sample grinder is an important equipment for laboratory sample pretreatment. Its main function is to grind solid samples into fine powder or uniform particles for subsequent analysis. At the same time, with the development of green energy conservation, grinders are also equipped with high-efficiency and energy-saving motor drive systems for use, which can perform grinding work while ensuring energy conservation. The grinder uses mechanical force (such as impact force, compression force, and shear force) to achieve uniform grinding of samples, ensure uniform particle size, and improve the accuracy of analysis results. Different types of grinders (such as planetary mills, ball mills, and vibration mills) are suitable for different materials and application scenarios;

[0003] However, the existing technology still has the following problems: the grinding surfaces of the grinders currently used for material samples are all single in grinding function, which results in that when the material sample grinder is used to grind different material samples, such as when grinding metals or non-metals, the friction force that can be achieved by the grinding surface needs to be adjusted according to the corresponding sample material, thereby requiring repeated disassembly and replacement of the grinding surface, which leads to low practicality of the grinder and cannot meet the current situation. Secondly, the grinder has a single function, and the powder after grinding is easily retained in the grinding chamber, resulting in waste of material samples and increased grinding costs. Summary of the Invention

[0004] An object of the present invention is to provide a new technical solution for a multi-stage particle size adjustment grinder for material sample preparation.

[0005] According to a first aspect of the present invention, a multi-stage particle size adjustment grinder for preparing material samples is provided, comprising a grinder body, a grinding box, and a conical grinding plate, wherein the grinding box is located inside the grinder body, and the conical grinding plate is located inside the grinding line, and is used to grind the material. The invention also includes:

[0006] A controlled grinding mechanism is located on the upper surface of the grinding machine body, and the conical grinding plate is rotated toward or away from the interior of the grinding box by the controlled grinding mechanism;

[0007] Auxiliary grinding components, wherein the auxiliary grinding components are provided in multiple groups, and the multiple groups of auxiliary grinding components are arranged in a circular shape with equal distances and are provided outside the conical grinding plate, and the auxiliary grinding components include a grinding plate, a cleaning plate and a bottom plate;

[0008] An adjustment assembly is provided with multiple groups, and the adjustment assembly is composed of a transmission protrusion component and a rotating component. The grinding plate and the bottom plate are both moved closer to or away from the center of the conical grinding plate through the transmission protrusion component, and the grinding plate is rotated on one side of the bottom plate through the rotating component;

[0009] The linkage components and the switching components are both provided with multiple groups, and the linkage components and the switching components are mutually transmitted and arranged, and the cleaning plate is arranged away from the bottom plate through the switching component.

[0010] Optionally, the upper end of the inner part of the grinder body is connected to a lifting plate by controlling the lifting of the grinding mechanism, a driving assembly is provided in the middle of the upper surface of the lifting plate, and the conical grinding plate is rotatably arranged at the bottom of the lifting plate through the driving assembly, a plurality of groups of positioning columns are provided inside the conical grinding plate, and the plurality of groups of positioning columns are fixed vertically to each other, a transmission assembly is commonly provided inside the plurality of groups of positioning columns, and the transmission assembly is used to drive the transmission protrusion component and the rotating component, and the transmission assembly is connected to the drive assembly in a transmission manner.

[0011] Optionally, the driving assembly includes a first servo motor and a second servo motor, the first servo motor is arranged in the middle of the upper surface of the lifting plate, and the first servo motor is transmission-connected to the control grinding mechanism, the bottom of the lifting plate is rotatably connected to a covering plate, the covering plate is fixedly mounted on the upper surface of the conical grinding plate, and the output shaft of the first servo motor passes through the middle of the lifting plate, one end of the output shaft of the first servo motor is fixedly mounted with an electric telescopic rod, a connecting plate is provided between the covering plate and the electric telescopic rod, and the movable rod of the electric telescopic rod passes through the center of the connecting plate and is fixedly connected to the second servo motor, and the transmission assembly is transmission-connected to the second servo motor.

[0012] Optionally, the transmission assembly includes multiple groups of extrusion plates, which are composed of two groups of conical columns facing each other, and a transmission column is rotatably connected between the two adjacent groups of extrusion plates. The second servo motor is used to drive the transmission column, and a first bevel gear ring is provided on the outer sliding sleeve of the transmission column. The first bevel gear ring is transmission-connected to the rotating component, the extrusion plate is slidably installed inside the positioning column, and the first bevel gear ring is rotatably installed inside the positioning column, and the extrusion plate is transmission-connected to the transmission protrusion component.

[0013] Optionally, the transmission protrusion component includes a pushing rod and a pressure head, the pushing rod is fixedly connected to the base plate, the pressure head is slidably installed inside the positioning column, the pushing rod is fixedly connected to the pressure head, and the two ends of one side of the pressure head are relatively inclined and used to fit the middle part of the outer side of the extrusion plate, and a reset spring is arranged between one end of the upper surface of the pushing rod and the outer side of the positioning column.

[0014] Optionally, the rotating component includes a rotating rod and a transmission rod, a universal rod structure is provided between the rotating rod and the transmission rod, the rotating rod is in transmission connection with the first bevel gear ring, and one end of the transmission rod passes through the base plate and is fixedly connected to the grinding plate. A first driven bevel gear is fixedly mounted on one end of the rotating rod, the first driven bevel gear is rotatably mounted inside the positioning column, and the first driven bevel gear is meshed with the outer side of the first bevel gear ring.

[0015] Optionally, the auxiliary grinding assembly also includes a splint, which is fixedly connected to the transmission rod, so that the splint is rotatably connected to the base plate through the transmission rod, and the grinding plate is arranged on one side of the splint, and a through hole is opened in the center of the grinding plate, and the cleaning plate is located inside the through hole, and both ends of the through hole are slidably connected with a closing plate, and both sets of closing plates are transmission-connected to the switching assembly.

[0016] Optionally, the switching assembly includes an extrusion sleeve and two groups of pressure sleeves, the extrusion sleeve sliding sleeve is arranged on the outside of the transmission rod, one end of the inner circle of the two groups of pressure sleeves is inclined, and the extrusion sleeve and one end of the inner circle of the pressure sleeve are correspondingly arranged, and a control rod is fixedly installed on the same end of the two groups of pressure sleeves, and the control rod passes through the center of the base plate and the splint in turn and is fixedly connected to the closing plate, and an expansion mechanism is provided between the two groups of closing plates and the cleaning plate, so that the cleaning plate is arranged close to or away from the base plate through the two groups of closing plates cooperating with the expansion mechanism.

[0017] Optionally, multiple groups of the linkage components include moving seats, and multiple groups of moving seats at the same vertical level are fixed to each other, and a telescopic plate is fixedly installed on the bottom of the moving seat, and the telescopic plate is fixedly connected to the upper end of the outer side of the extrusion sleeve.

[0018] Optionally, the remaining multiple groups of linkage components also include a second driven bevel gear and a rotating rod, a threaded layer is provided at one end of the outer side of the rotating rod, and a threaded sleeve is threadedly connected to the outer side of the rotating rod through the threaded layer, the threaded sleeve is rotatably connected to the positioning column through the second driven bevel gear, and the fixed sleeve on the outer side of the rotating rod is provided with a positioning sleeve, the rotating rod is slidably connected to the positioning column through the positioning sleeve, the rotating rod is fixedly connected to the movable seat, and the upper end of the positioning column is rotatably connected to the second bevel gear ring, multiple groups of second driven bevel gears are meshed with the second bevel gear ring, a micro motor is provided inside the positioning column, and one end of the micro motor output shaft is fixedly connected to one of the groups of second driven bevel gears.

[0019] According to one embodiment of the present disclosure, the conical grinding plate can achieve repeated lifting and rotation of the grinding material sample by controlling the grinding mechanism and the drive assembly, achieving repeated punching and rotary grinding, making it more efficient than traditional rotary grinding. In addition, repeated punching can be omitted depending on the usage, and only single rotary grinding can be selected, thereby further improving the functional practicality of the material sample grinder.

[0020] At the same time, by setting up multiple sets of auxiliary grinding components, the friction force of the outer side of the conical grinding plate can be selected according to different material samples. If a greater friction force is required, the transmission protrusion component can be used to realize that the bottom plate drives the grinding plate to bulge a part of the outer side of the conical grinding plate, so that the outer side of the conical grinding plate is uneven, thereby increasing the friction force. If a greater friction force is not required, there is no need to control the transmission protrusion component. Therefore, the auxiliary grinding component can be used to make the grinder do not need to disassemble and replace the grinding surface, thereby further improving the practicality and working efficiency of the grinder.

[0021] Secondly, the grinding plate can be selected by the rotating component. When the amount of material sample ground is too much and the material sample discharge efficiency is slow, the grinding plate can be controlled by the rotating component to be tilted, so that the grinding plate not only has a grinding effect, but also can rely on the characteristics of tilted rotation to quickly discharge the ground material sample powder, thereby further improving the practicality of the grinder;

[0022] Through the mutual cooperation of the linkage component, the switching component and the expansion mechanism, when the material sample is ground, the linkage component, the switching component and the expansion mechanism can be used to control the cleaning plate to protrude from the inside of the grinding plate, so that it replaces the grinding plate to contact the inner wall of the grinding box, and cooperate with the driving component to realize the rotation of the cleaning plate to scrape off the powder retained on the inner wall of the grinding box, thereby further avoiding the waste of powder material samples.

[0023] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0025] Figure 1 A schematic diagram of the overall structure of a multi-stage particle size adjustment grinder for preparing material samples in one embodiment;

[0026] Figure 2 A schematic diagram of the structure of a material storage tank of a multi-stage particle size adjustment grinder for material sample preparation in one embodiment;

[0027] Figure 3 A schematic diagram of the lifting plate structure of a multi-stage particle size adjustment grinder for material sample preparation in one embodiment;

[0028] Figure 4 For example, a multi-stage particle size adjustment grinder is used for preparing a material sample. Figure 3 A schematic diagram of the enlarged structure at point A;

[0029] Figure 5A schematic diagram of the transmission assembly structure of a multi-stage particle size adjustment grinder for material sample preparation in one embodiment;

[0030] Figure 6 A schematic diagram of the structure of a cover plate of a multi-stage particle size adjustment grinder for preparing material samples in one embodiment;

[0031] Figure 7 For example, a multi-stage particle size adjustment grinder is used for preparing a material sample. Figure 6 A schematic diagram of the enlarged structure at point B;

[0032] Figure 8 A schematic diagram of the structure of a grinding box of a multi-stage particle size adjustment grinder for preparing material samples in one embodiment;

[0033] Figure 9 A schematic diagram of the positioning column structure of a multi-stage particle size adjustment grinder for material sample preparation in one embodiment;

[0034] Figure 10 A schematic diagram of the structure of an extrusion plate of a multi-stage particle size adjustment grinder for preparing material samples in one embodiment;

[0035] Figure 11 For example, a multi-stage particle size adjustment grinder is used for preparing a material sample. Figure 10 Schematic diagram of the enlarged structure at C;

[0036] Figure 12 A schematic diagram of the structure of a movable base of a multi-stage particle size adjustment grinder for preparing material samples in one embodiment;

[0037] Figure 13 A schematic diagram of the bottom plate structure of a multi-stage particle size adjustment grinder for material sample preparation in one embodiment;

[0038] Figure 14 For example, a multi-stage particle size adjustment grinder is used for preparing a material sample. Figure 13 A schematic diagram of the enlarged structure at D;

[0039] Figure 15 For example, a multi-stage particle size adjustment grinder is used for preparing a material sample. Figure 13 A schematic diagram of the structure at E is enlarged;

[0040] Figure 16 This is a schematic diagram of the cross-sectional structure of the grinding plate of a multi-stage particle size adjustment grinder for preparing material samples in one embodiment.

[0041] The markings in the figure are as follows: 1. Grinding machine body; 2. Material storage tank; 3. Reciprocating lifting mechanism; 4. Mounting shell; 5. Closing assembly; 6. Lifting plate; 7. Guide plate; 8. Avoidance hole; 9. Transmission assembly; 901. First bevel gear ring; 902. Transmission column; 903. Extrusion plate; 10. Adjustment assembly; 11. Covering plate; 12. Drive assembly; 13. Conical grinding plate; 14. Grinding box; 15. Grinding chamber; 16. Positioning column; 17. Auxiliary grinding assembly; 18. Linkage assembly; 19. Switching assembly; 20. Deployment mechanism; 21. Electric telescopic rod; 101. Transmission protrusion component; 1011. Push rod; 1012. Pressure head; 1013. Return spring; 102. Rotating component; 1021. Rotating rod; 1022. First driven bevel gear; 1023. Universal rod structure ;1024, transmission rod;501, adjusting knob;502, fixed plate;503, transmission tooth plate;504, lifting block plate;505, transmission gear;1201, first servo motor;1202, second servo motor;1203, connecting plate;1701, bottom plate;1702, grinding plate;1703, clamping plate;1704, cleaning plate;1705, closing plate;1801, rotating rod;1802, positioning sleeve;1803, threaded layer;1804, threaded sleeve;1805, micro motor;1806, second bevel gear ring;1807, second driven bevel gear;1808, moving seat;1901, extrusion sleeve;1902, telescopic plate;1903, pressure sleeve;1904, control rod;2001, arc plate;2002, tooth groove;2003, micro gear. DETAILED DESCRIPTION

[0042] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0043] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0044] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0045] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0046] like Figures 1 to 16As shown, a multi-stage particle size adjustment grinder for material sample preparation includes a grinder body 1, a grinding box 14 and a conical grinding plate 13. The grinding box 14 is located inside the grinder body 1, and the conical grinding plate 13 is located inside the grinding line for grinding materials. The grinder also includes:

[0047] A control grinding mechanism is provided, wherein the control grinding mechanism is located on the upper surface of the grinding machine body 1, and the conical grinding plate 13 is rotated toward or away from the interior of the grinding box 14 by the control grinding mechanism;

[0048] Because the conical grinding plate 13 is designed to rotate closer to or away from the inside of the grinding box 14 by controlling the grinding mechanism, the conical grinding plate 13 can not only rotate to achieve grinding, but also improve its grinding efficiency by repeatedly lifting and lowering to impact the material sample, thereby improving its efficiency compared to the traditional grinding method using a single method (rotation or impact). In addition, the control of the grinding mechanism can also achieve that after the conical grinding plate 13 stays at the optimal grinding position, it does not use the method of repeated lifting and lowering. Therefore, the best grinding method can be selected according to the material sample used, thereby further improving the practicality of the material sample grinder.

[0049] Auxiliary grinding assemblies 17, which are provided in multiple groups. The multiple groups of auxiliary grinding assemblies 17 are arranged in a circular shape and equidistantly disposed outside the conical grinding plate 13, and the auxiliary grinding assemblies 17 include a grinding plate 1702, a cleaning plate 1704 and a bottom plate 1701;

[0050] Specifically, the outer surface of the conical grinding plate 13 is provided with multiple groups of movable holes, and the auxiliary grinding assembly 17 is arranged inside the movable holes.

[0051] The adjustment assembly 10 is provided with multiple groups. The adjustment assembly 10 is composed of a transmission protrusion component 101 and a rotating component 102. The grinding plate 1702 and the bottom plate 1701 are both moved closer to or away from the center of the conical grinding plate 13 through the transmission protrusion component 101, and the grinding plate 1702 is rotatably arranged on one side of the bottom plate 1701 through the rotating component 102;

[0052] like Figures 1 to 16 As shown, due to the design that the grinding plate 1702 is rotated on one side of the base plate 1701 through the rotating component 102, the grinding plate 1702 can switch states. When it is necessary to grind a material sample, it is only necessary to adjust the grinding plate 1702 to be placed vertically. When the amount of material sample to be ground is too much and the falling speed of the material sample is too slow to meet the requirements, the grinding plate 1702 can be tilted, so that the grinding plate 1702 can not only cooperate with the conical grinding plate 13 to grind the material sample, but also rely on the characteristics of tilted rotation to speed up the falling speed of the ground material sample, thereby further improving the practicality of the grinder.

[0053] The linkage assembly 18 and the switching assembly 19 are both provided with multiple groups, and the linkage assembly 18 and the switching assembly 19 are mutually transmitted and arranged, and the cleaning plate 1704 is arranged away from the bottom plate 1701 through the switching assembly 19.

[0054] like Figures 1 to 6 As shown, due to the design of the cleaning plate 1704 being set away from the bottom plate 1701 through the switching component 19, the cleaning plate 1704 can be hidden in the grinding plate 1702 or displayed for use through the linkage component 18 and the switching component 19. When grinding is in progress, the cleaning plate 1704 is hidden. When it is necessary to collect the powder material sample retained on the inner wall of the grinding box 14, the cleaning plate 1704 can be unfolded for use.

[0055] From the above description, the present invention has the ability to select the best grinding method according to different working conditions and when grinding different material samples, and avoid waste of powder material samples, thereby effectively improving the practicality of the grinder.

[0056] The upper end of the interior of the grinder body 1 is connected to a lifting plate 6 by controlling the lifting of the grinding mechanism. A driving assembly 12 is provided in the middle of the upper surface of the lifting plate 6, and the conical grinding plate 13 is rotatably set at the bottom of the lifting plate 6 through the driving assembly 12. Multiple groups of positioning columns 16 are provided inside the conical grinding plate 13, and the multiple groups of positioning columns 16 are fixed vertically to each other. A transmission assembly 9 is commonly provided inside the multiple groups of positioning columns 16, and the transmission assembly 9 is used to drive the transmission protrusion component 101 and the rotating component 102. The transmission assembly 9 is transmission-connected to the drive assembly 12.

[0057] Specifically, such as Figures 1 to 16 As shown, the above-mentioned controlled grinding mechanism includes multiple groups of material storage tanks 2, a reciprocating lifting mechanism 3 and multiple groups of closing components 5. The multiple groups of material storage tanks 2 are arranged in a circular and equidistant manner. A grinding chamber 15 is formed between the conical grinding plate 13 and the grinding box 14. The material storage tanks 2 are communicated with the interior of the grinding chamber 15, and the closing components 5 are used to close the conveying area of the material storage tanks 2;

[0058] For example, the reciprocating lifting mechanism 3 adopts the traditional structure of converting a circular motion trajectory into a reciprocating linear motion trajectory for use. Those skilled in the art should know how to install and use the reciprocating lifting mechanism 3 to control the repeated lifting and lowering movement of the lifting plate 6, and when the reciprocating lifting mechanism 3 stops, the position of the lifting plate 6 can be guaranteed to be fixed. Therefore, the present invention will not be elaborated here.

[0059] Specifically, the above-mentioned closing component 5 includes a lifting plug plate 504 and a transmission tooth plate 503, the transmission tooth plate 503 is slidingly connected to the upper surface of the lifting plate 6, and one side of the transmission tooth plate 503 is rotatably connected to the adjusting knob 501, and the outer side of the adjusting knob 501 is threadedly sleeved with a fixed plate 502, and the fixed plate 502 is fixedly connected to the lifting plate 6, and the transmission tooth plate 503 and the lifting plug plate 504 are meshed with transmission gears 505 on opposite sides, and the two groups of transmission gears 505 are meshed with each other, and the two groups of transmission gears 505 are rotatably connected to the upper surface of the grinder body 1, and a telescopic hole is opened on the upper surface of the material storage tank 2 at the discharge port, and the lifting plug plate 504 is slidably installed inside the telescopic hole.

[0060] Through the design of the closing component 5, when the conical grinding plate 13 is rotated and repeatedly raised and lowered, the conical grinding plate 13 descends, and the transmission tooth plate 503 can drive the two sets of transmission gears 505 to control the lifting and lowering blocking plate 504 to descend, thereby blocking the material sample from entering the grinding chamber 15. If only the conical grinding plate 13 is required to be rotated for grinding, the knob 501 can be adjusted to control the transmission tooth plate 503 to move away from the transmission gear 505, so as to avoid the lifting and lowering blocking plate 504 from blocking the material sample.

[0061] It should be noted that the design of designing multiple groups of material storage tanks 2 can realize the storage of different material samples in multiple groups of material storage tanks 2, and the corresponding choice of whether to use the closing component 5 to seal the material storage tank 2 can be made, so as to facilitate the staff to quickly switch different material samples for grinding.

[0062] Furthermore, the driving assembly 12 includes a first servo motor 1201 and a second servo motor 1202. The first servo motor 1201 is arranged in the middle of the upper surface of the lifting plate 6, and the first servo motor 1201 is connected to the control grinding mechanism in a transmission manner. The bottom of the lifting plate 6 is rotatably connected to the cover plate 11, and the cover plate 11 is fixedly installed on the upper surface of the conical grinding plate 13. The output shaft of the first servo motor 1201 passes through the middle of the lifting plate 6. One end of the output shaft of the first servo motor 1201 is fixedly installed with an electric telescopic rod 21. A connecting plate 1203 is provided between the cover plate 11 and the electric telescopic rod 21, and the movable rod of the electric telescopic rod 21 passes through the center of the connecting plate 1203 and The second servo motor 1202 is fixedly connected, and the transmission assembly 9 is transmission-connected to the second servo motor 1202; the transmission assembly 9 includes multiple groups of extrusion plates 903, and the extrusion plates 903 are composed of two groups of conical columns relative to each other. A transmission column 902 is rotatably connected between two adjacent groups of extrusion plates 903. The second servo motor 1202 is used to drive the transmission column 902, and a first bevel gear ring 901 is provided on the outer sliding sleeve of the transmission column 902. The first bevel gear ring 901 is transmission-connected to the rotating component 102. The extrusion plate 903 is slidably installed inside the positioning column 16, and the first bevel gear ring 901 is rotatably installed inside the positioning column 16. The extrusion plate 903 is transmission-connected to the transmission protrusion component 101.

[0063] like Figures 1 to 16 As shown, through the design of the electric telescopic rod 21 , the second servo motor 1202 can not only drive the transmission column 902 to rotate, but also realize the lifting and rotation of the lifting column 902 through the electric telescopic rod 21 .

[0064] It should be noted that when the lifting column 902 rotates, it can drive the first bevel gear ring 901 to rotate. When the lifting column 902 descends, the lifting column 902 can drive the extrusion plate 903 to descend and squeeze and control the transmission protrusion component 101 to extend horizontally.

[0065] It should be noted that the first servo motor 1201 is used to drive the conical grinding plate 13 to rotate through the cover plate 11 to perform grinding work, while the second servo motor 1202 is used to drive the first bevel gear ring 901 to rotate and control the lifting of the extrusion plate 903.

[0066] Furthermore, the transmission protrusion component 101 includes a push rod 1011 and a pressure head 1012. The push rod 1011 is fixedly connected to the bottom plate 1701, and the pressure head 1012 is slidably installed inside the positioning column 16. The push rod 1011 and the pressure head 1012 are fixedly connected, and the two ends of one side of the pressure head 1012 are relatively inclined and are used to fit the middle part of the outer side of the extrusion plate 903. A return spring 1013 is provided between one end of the upper surface of the push rod 1011 and the outer side of the positioning column 16.

[0067] like Figures 1 to 16 As shown, through the design of the fixed connection between the push rod 1011 and the bottom plate 1701, when the extrusion plate 903 descends, relying on the characteristic of the middle inclination, the pressure head 1012 can be squeezed to extend horizontally, so that the pressure head 1012 drives the bottom plate 1701 to move through the push rod 1011, so that the bottom plate 1701 can drive the grinding plate 1702 to move a small distance, thereby changing the friction force on the outer surface of the conical grinding plate 13.

[0068] By the design of the reset spring 1013, when the extrusion plate 903 moves upward, the pressure head 1012 can be automatically reset under the pulling force of the reset spring 1013, so that the grinding plate 1702 is hidden inside the movable hole and can be moved from the bottom of the hole. Figure 5 It can be seen that the middle part of the outer surface of the extrusion plate 903 is concave through symmetrical inclination, so that when the extrusion plate 903 moves upward, the pressure head 1012 can be limited by the inclined part of the bottom outer side of the extrusion plate 903, so as to prevent the conical grinding plate 13 from shaking during the rotating grinding operation, causing the grinding plate 1702 to move out of the movable hole.

[0069] Furthermore, the rotating component 102 includes a rotating rod 1021 and a transmission rod 1024, and a universal rod structure 1023 is arranged between the rotating rod 1021 and the transmission rod 1024. The rotating rod 1021 is transmission-connected to the first bevel gear ring 901, and one end of the transmission rod 1024 passes through the base plate 1701 and is fixedly connected to the grinding plate 1702. A first driven bevel gear 1022 is fixedly installed at one end of the rotating rod 1021, and the first driven bevel gear 1022 is rotatably installed inside the positioning column 16, and the first driven bevel gear 1022 is meshed with the outer side of the first bevel gear ring 901.

[0070] like Figures 1 to 16 As shown, through the design of the universal rod structure 1023, when the second servo motor 1202 drives the first bevel gear ring 901 to rotate, the first bevel gear ring 901 drives the rotating rod 1021 to rotate through the first driven bevel gear 1022, and the rotating rod 1021 can control the rotation of the transmission rod 1024 through the universal rod structure 1023, and the transmission rod 1024 drives the grinding plate 1702 to rotate, thereby completing the angle adjustment of the grinding plate 1702.

[0071] Furthermore, the auxiliary grinding assembly 17 also includes a splint 1703, which is fixedly connected to the transmission rod 1024, so that the splint 1703 is rotatably connected to the base plate 1701 through the transmission rod 1024, and the grinding plate 1702 is arranged on one side of the splint 1703. A through hole is opened in the center of the grinding plate 1702, and the cleaning plate 1704 is located inside the through hole. Both ends of the through hole are slidably connected with a closing plate 1705, and the two sets of closing plates 1705 are both transmission-connected to the switching assembly 19. The switching assembly 19 includes an extrusion sleeve 1901 and two groups of pressure sleeves 1903. The extrusion sleeve 1901 is slidably sleeved on the outside of the transmission rod 1024. One end of the inner circle of the two groups of pressure sleeves 1903 is inclined, and the extrusion sleeve 1901 and one end of the inner circle of the pressure sleeve 1903 are correspondingly arranged. A control rod 1904 is fixedly installed on the same end of the two groups of pressure sleeves 1903. The control rod 1904 passes through the center of the bottom plate 1701 and the splint 1703 in sequence and is fixedly connected to the closing plate 1705. An expansion mechanism 20 is arranged between the two groups of closing plates 1705 and the cleaning plate 1704, so that the cleaning plate 1704 is arranged close to or away from the bottom plate 1701 through the two groups of closing plates 1705 in cooperation with the expansion mechanism 20.

[0072] Specifically, such as Figures 1 to 16As shown, the above-mentioned unfolding mechanism 20 includes multiple groups of arc plates 2001 and multiple groups of micro gears 2003, unfolding grooves are opened on both sides of the through hole, and the closing plate 1705 is slidably installed inside the unfolding groove, and the micro gear 2003 is rotatably installed on one side of the closing plate 1705, the arc plate 2001 is fixedly connected to the micro gear 2003, and multiple groups of tooth grooves 2002 are opened inside the two groups of unfolding grooves, the micro gear 2003 is meshed and connected with the tooth grooves 2002, and the arc plate 2001 is rotatably connected to the cleaning plate 1704.

[0073] Through the design of the micro gear 2003, the tooth groove 2002 and the arc plate 2001, when the two groups of control rods 1904 respectively drive the two groups of closing plates 1705 to move away from each other, the two groups of closing plates 1705 drive the micro gear 2003 to roll in the tooth groove 2002 when moving, and the arc plate 2001 rotates. The arc plate 2001 pulls the cleaning plate 1704 to explore the inside of the through hole, completing the replacement of the grinding plate 1702 to contact the inner wall of the grinding box 14, so that the powder material sample can be scraped off.

[0074] Furthermore, the multiple linkage components 18 include a moving seat 1808, and the multiple groups of moving seats 1808 at the same vertical level are fixed to each other. A telescopic plate 1902 is fixedly installed at the bottom of the moving seat 1808, and the telescopic plate 1902 is fixedly connected to the upper end of the outer side of the extrusion sleeve 1901. The remaining multiple linkage components 18 also include a second driven bevel gear 1807 and a rotating rod 1801. A threaded layer 1803 is provided at one end of the outer side of the rotating rod 1801, and the outer side of the rotating rod 1801 is threadedly connected to a threaded sleeve 1804 through the threaded layer 1803. The threaded sleeve 1804 is threadedly connected to the second driven bevel gear 1807 through the threaded layer 1803. The bevel gear 1807 is rotatably connected to the positioning column 16, and a positioning sleeve 1802 is provided on the outer fixed sleeve of the rotating rod 1801. The rotating rod 1801 is slidingly connected to the positioning column 16 through the positioning sleeve 1802. The rotating rod 1801 is fixedly connected to the moving seat 1808. The upper end of the interior of the positioning column 16 is rotatably connected to the second bevel gear ring 1806. Multiple groups of second driven bevel gears 1807 are all meshed and connected with the second bevel gear ring 1806. A micro motor 1805 is provided inside the positioning column 16, and one end of the output shaft of the micro motor 1805 is fixedly connected to one of the groups of second driven bevel gears 1807.

[0075] like Figures 1 to 16As shown, through the design of the micro motor 1805, the user can control one group of the second driven bevel gears 1807 to rotate by controlling the micro motor 1805, and the second driven bevel gear 1807 controls the rotation of the remaining multiple groups of second driven bevel gears 1807 through the second bevel gear ring 1806, so that the threaded sleeve 1804 drives the rotating rod 1801 to move horizontally, and the rotating rod 1801 drives the moving seat 1808 to move horizontally, and the moving seat 1808 realizes the extrusion sleeve 1901 to approach and squeeze the two groups of pressure sleeves 1903 through the telescopic plate 1902, so that the pressure sleeve 1903 drives the two groups of control rods 1904 to control the movement of the closing plate 1705, and further realizes the automatic extension of the cleaning plate 1704 out of the through hole for use.

[0076] It should be noted that if Figure 13 and Figure 16 As shown, due to the through holes provided on the grinding plate 1702 and the presence of two sets of closing plates 1705, the grinding surface of the grinding plate 1702 is uneven, which can further enhance its own friction.

[0077] For example, the telescopic plate 1902 mentioned above uses a hollow larger plate shell to cover a smaller plate shell to achieve telescopic effect, and using a larger shell to cover a smaller shell to achieve the telescopic effect is already a mature structural technology. Those skilled in the art should know how to install and use the telescopic plate 1902 to achieve that when the movable seat 1808 moves, it drives the extrusion sleeve 1901 to slide down along the inclined transmission rod 1024 and squeeze the pressure sleeve 1903.

[0078] It should be noted that the cleaning plate 1704 needs to be unfolded and used when the grinding plate 1702 is in a vertical state, so that the cleaning plate 1704 can better scrape off the retained powder.

[0079] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A multi-stage particle size adjustment grinder for preparing material samples, comprising a grinder body (1), a grinding box (14) and a conical grinding plate (13), wherein the grinding box (14) is located inside the grinder body (1), and the conical grinding plate (13) is located inside the grinding line, and is used for grinding materials, characterized in that: Also includes: A controlled grinding mechanism, the controlled grinding mechanism being located on the upper surface of the grinding machine body (1), and the conical grinding plate (13) being rotated toward or away from the interior of the grinding box (14) by the controlled grinding mechanism; Auxiliary grinding components (17), wherein the auxiliary grinding components (17) are provided in multiple groups, and the multiple groups of auxiliary grinding components (17) are arranged in an annular manner and equidistantly on the outside of the conical grinding plate (13), and the auxiliary grinding components (17) include a grinding plate (1702), a cleaning plate (1704) and a bottom plate (1701); An adjustment assembly (10), wherein the adjustment assembly (10) is provided with multiple groups, the adjustment assembly (10) is composed of a transmission protrusion component (101) and a rotating component (102), the grinding plate (1702) and the bottom plate (1701) are both moved closer to or farther away from the center of the conical grinding plate (13) via the transmission protrusion component (101), and the grinding plate (1702) is rotatably arranged on one side of the bottom plate (1701) via the rotating component (102); A linkage assembly (18) and a switching assembly (19), wherein the linkage assembly (18) and the switching assembly (19) are both provided with a plurality of groups, and the linkage assembly (18) and the switching assembly (19) are mutually arranged for transmission, and the cleaning plate (1704) is arranged away from the bottom plate (1701) through the switching assembly (19).

2. The multi-stage particle size adjustment grinder for material sample preparation according to claim 1, characterized in that: The upper end of the grinding machine body (1) is connected to a lifting plate (6) by controlling the grinding mechanism to lift and lower. A driving assembly (12) is provided in the middle of the upper surface of the lifting plate (6), and the conical grinding plate (13) is rotatably arranged at the bottom of the lifting plate (6) through the driving assembly (12). A plurality of groups of positioning columns (16) are provided inside the conical grinding plate (13), and the plurality of groups of positioning columns (16) are fixedly arranged perpendicularly to each other. A transmission assembly (9) is commonly provided inside the plurality of groups of positioning columns (16), and the transmission assembly (9) is used to drive the transmission protrusion component (101) and the rotating component (102). The transmission assembly (9) is in transmission connection with the driving assembly (12).

3. The multi-stage particle size adjustment grinder for material sample preparation according to claim 2, characterized in that: The driving assembly (12) comprises a first servo motor (1201) and a second servo motor (1202), wherein the first servo motor (1201) is arranged in the middle of the upper surface of the lifting plate (6), and the first servo motor (1201) is connected to the control grinding mechanism in a transmission manner, the bottom of the lifting plate (6) is rotatably connected to a cover plate (11), the cover plate (11) is fixedly mounted on the upper surface of the conical grinding plate (13), and the output shaft of the first servo motor (1201) passes through the middle of the lifting plate (6), an electric telescopic rod (21) is fixedly mounted on one end of the output shaft of the first servo motor (1201), a connecting plate (1203) is arranged between the cover plate (11) and the electric telescopic rod (21), and a movable rod of the electric telescopic rod (21) passes through the center of the connecting plate (1203) and is fixedly connected to the second servo motor (1202), and the transmission assembly (9) is connected to the second servo motor (1202) in a transmission manner.

4. The multi-stage particle size adjustment grinder for material sample preparation according to claim 3, characterized in that: The transmission assembly (9) includes a plurality of extrusion plates (903), wherein the extrusion plates (903) are composed of two groups of tapered columns facing each other, and a transmission column (902) is rotatably connected between two adjacent groups of extrusion plates (903). The second servo motor (1202) is used to drive the transmission column (902), and a first conical gear ring (901) is provided on the outer side of the transmission column (902) for sliding. The first conical gear ring (901) is transmission-connected to the rotating component (102). The extrusion plates (903) are slidably mounted inside the positioning column (16), and the first conical gear ring (901) is rotationally mounted inside the positioning column (16). The extrusion plates (903) are transmission-connected to the transmission protrusion component (101).

5. The multi-stage particle size adjustment grinder for material sample preparation according to claim 4, characterized in that: The transmission protrusion component (101) includes a push rod (1011) and a pressure head (1012), wherein the push rod (1011) is fixedly connected to the bottom plate (1701), and the pressure head (1012) is slidably installed inside the positioning column (16). The push rod (1011) is fixedly connected to the pressure head (1012), and the two ends of one side of the pressure head (1012) are relatively inclined and are used to fit the middle part of the outer side of the extrusion plate (903). A return spring (1013) is provided between one end of the upper surface of the push rod (1011) and the outer side of the positioning column (16).

6. The multi-stage particle size adjustment grinder for material sample preparation according to claim 5, characterized in that: The rotating component (102) comprises a rotating rod (1021) and a transmission rod (1024); a universal rod structure (1023) is provided between the rotating rod (1021) and the transmission rod (1024); the rotating rod (1021) is in transmission connection with the first bevel gear ring (901); one end of the transmission rod (1024) passes through the bottom plate (1701) and is fixedly connected to the grinding plate (1702); a first driven bevel gear (1022) is fixedly mounted on one end of the rotating rod (1021); the first driven bevel gear (1022) is rotatably mounted inside the positioning column (16), and the first driven bevel gear (1022) is meshedly connected to the outside of the first bevel gear ring (901).

7. The multi-stage particle size adjustment grinder for material sample preparation according to claim 6, characterized in that: The auxiliary grinding assembly (17) further includes a clamping plate (1703), which is fixedly connected to the transmission rod (1024), so that the clamping plate (1703) is rotatably connected to the base plate (1701) via the transmission rod (1024), and the grinding plate (1702) is arranged on one side of the clamping plate (1703), and a through hole is opened in the center of the grinding plate (1702), and the cleaning plate (1704) is located inside the through hole, and both ends of the through hole are slidably connected to the closing plate (1705), and the two sets of closing plates (1705) are both transmission-connected to the switching assembly (19).

8. The multi-stage particle size adjustment grinder for material sample preparation according to claim 7, characterized in that: The switching assembly (19) includes an extrusion sleeve (1901) and two groups of pressure sleeves (1903), wherein the extrusion sleeve (1901) is slidably sleeved on the outside of the transmission rod (1024), and one end of the inner circle of the two groups of pressure sleeves (1903) is inclined, and the extrusion sleeve (1901) and one end of the inner circle of the pressure sleeve (1903) are correspondingly arranged. A control rod (1904) is fixedly installed on the same end of the two groups of pressure sleeves (1903), and the control rod (1904) passes through the center of the bottom plate (1701) and the clamping plate (1703) in sequence and is fixedly connected to the closing plate (1705). An expansion mechanism (20) is provided between the two groups of closing plates (1705) and the cleaning plate (1704), so that the cleaning plate (1704) is arranged close to or away from the bottom plate (1701) through the two groups of closing plates (1705) in cooperation with the expansion mechanism (20).

9. The multi-stage particle size adjustment grinder for material sample preparation according to claim 8, characterized in that: The plurality of linkage components (18) include movable seats (1808), and the plurality of movable seats (1808) at the same vertical level are fixedly arranged with each other. A telescopic plate (1902) is fixedly installed at the bottom of the movable seat (1808), and the telescopic plate (1902) is fixedly connected to the outer upper end of the extrusion sleeve (1901).

10. The multi-stage particle size adjustment grinder for material sample preparation according to claim 9, characterized in that: The remaining multiple linkage components (18) further include a second driven bevel gear (1807) and a rotating rod (1801), wherein one end of the outer side of the rotating rod (1801) is provided with a threaded layer (1803), and the outer side of the rotating rod (1801) is threadedly connected to a threaded sleeve (1804) through the threaded layer (1803), and the threaded sleeve (1804) is rotatably connected to the positioning column (16) through the second driven bevel gear (1807), and the outer fixed sleeve of the rotating rod (1801) is provided with a positioning sleeve (1802), and the rotating rod (1801) ) is slidably connected to the positioning column (16) through a positioning sleeve (1802), the rotating rod (1801) is fixedly connected to the movable seat (1808), the upper end of the interior of the positioning column (16) is rotatably connected to the second bevel gear ring (1806), and multiple groups of second driven bevel gears (1807) are all meshed and connected with the second bevel gear ring (1806), and a micro motor (1805) is provided inside the positioning column (16), and one end of the output shaft of the micro motor (1805) is fixedly connected to one group of the second driven bevel gears (1807).

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