Mine ore crushing and sampling equipment

Abstract

The utility model relates to mine ore crushing and sampling equipment which comprises a supporting machine frame for supporting a crushing processing shell, and a primary crushing assembly located on the upper layer and a secondary crushing assembly located on the lower layer are arranged in the crushing processing shell in a partitioned mode. A screening assembly and a division sample collecting assembly for collecting screened ore particle samples are further arranged below the secondary crushing assembly, and a splash-proof feeding shell for ore input is further arranged at the top of the crushing processing shell; the screening assembly is installed at the bottom of the supporting and smashing machining shell in the mode that the ore which is continuously smashed twice can be screened and connected with the supporting rack, and a waste box capable of collecting remaining materials is further arranged below the screening assembly. According to the utility model, sufficient sample ore grains with standard granularity and mixing degree can be obtained in a manner of multiple crushing and multi-process integration, so that the sampling efficiency and the sampling quality are improved, and the later detection accuracy and effect are ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of ore sampling equipment, and in particular to a mining ore crushing and sampling equipment. Background Technology

[0002] During mining operations, ore sampling is necessary to analyze the composition and content of minerals. The purpose is to study mineral quality, the physical and chemical properties of the ore and surrounding rock, ore processing technology, and mining conditions. This allows for the acquisition of mineral reserves and geological data required for mine construction and design, facilitating investigations into the geological conditions of a specific area, including rocks, strata, structures, minerals, hydrology, and geomorphology. This data is then used to plan mineral resource development for relevant units. Ore sampling involves collecting a small portion of ore from an ore body or geological formation for analysis, testing, and identification. To ensure the accuracy of the test data, ore sample preparation involves steps such as crushing, sieving, blending, and reduction. Crushed ore fragments are then sieved to obtain ore blocks of a specific particle size, and the fragments are further mixed to ensure the sample contains both surface and internal ore particles, thereby improving sample homogeneity and reducing variability. In addition, it is necessary to collect smaller quantities of the mixed ore fragments to improve the representativeness of the ore samples.

[0003] Because mined ore is typically in large blocks that don't meet testing requirements, sampling personnel need to crush the large raw ore into appropriately sized fragments before sampling. However, current methods typically rely on manual crushing or general-purpose crushing equipment, which cannot effectively screen fragments with varying particle sizes after crushing. This affects the accuracy and effectiveness of subsequent testing. Furthermore, existing crushing methods are inefficient, failing to ensure a sufficient number of ore fragments meeting sampling standards, thus reducing sampling efficiency. In addition, existing crushing equipment cannot integrate the multiple pre-sampling processes, requiring repeated sample transfers between different devices, which easily leads to sample contamination and distortion of the ore sample, resulting in inaccurate ore testing data. Utility Model Content

[0004] The purpose of this invention is to provide a mining ore crushing and sampling device that can obtain sufficient standard particle size and mixing degree sample mineral particles through multiple crushing and multi-process integration, thereby improving sampling efficiency and quality while ensuring the accuracy and effect of subsequent testing. This addresses the problems of poor crushing effect, high crushing difficulty and small screening capacity of existing manual crushing and general crushing equipment, which are not conducive to efficiently obtaining sample mineral particles that are uniformly distributed in the raw ore, and the difficulty of subsequent screening, which affects the accuracy and effect of subsequent testing. It also addresses the problem that multiple processing steps before sampling require multiple transfers of ore samples, which can easily lead to ore sample contamination and make it impossible to guarantee the authenticity of the ore samples.

[0005] The technical solution adopted by this utility model is as follows: a mining ore crushing and sampling device, including a support frame supporting the crushing and processing shell, a primary crushing component in the upper layer and a secondary crushing component in the lower layer are arranged in the crushing and processing shell, and a screening component and a sample collection component for collecting the screened ore particles are arranged below the secondary crushing component. A splash-proof feed shell for ore input is also arranged at the top of the crushing and processing shell. The screening component is installed at the bottom of the supporting crushing and processing shell and connected to the support frame in a manner that enables the screening of ore after two consecutive crushings, and a waste bin for collecting residual material is arranged below the screening component.

[0006] According to a preferred embodiment, the crushing and processing shell includes an upper crushing chamber, a lower crushing chamber, and a converging chamber. The upper crushing chamber, in which the primary crushing component is installed, is connected to the lower crushing chamber through the converging chamber, which is capable of collecting and guiding the pre-crushed ore. The lower crushing chamber is provided with the secondary crushing component.

[0007] According to a preferred embodiment, two side-by-side crushing rollers of the primary crushing assembly are rotatably mounted laterally in the upper crushing chamber, and one end of each of the two crushing rollers penetrates the cavity wall of the upper crushing chamber and is connected to a drive tooth. The two drive teeth are engaged in drive, and one of the drive teeth is also engaged in drive with a rotating tooth. The rotating tooth is connected in drive to a first crushing drive motor mounted on the outer wall of the upper crushing chamber.

[0008] According to a preferred embodiment, the secondary crushing assembly includes a crushing outer cylinder, a crushing rotating body, a transmission vertical shaft, and a second crushing drive motor. The crushing rotating body is disposed in the crushing outer cylinder. The transmission vertical shaft is coaxially inserted into the bottom surface of the crushing rotating body, and the lower axial end of the transmission vertical shaft is connected to the second crushing drive motor mounted on the bottom surface of the crushing outer cylinder.

[0009] According to a preferred embodiment, transverse support rods are provided circumferentially at intervals on the outer side of the crushing outer cylinder, and the radial outer end of the transverse support rods is connected to the inner wall surface of the lower crushing chamber; screening holes for discharging crushed mineral particles are also provided on the side wall of the crushing outer cylinder.

[0010] According to a preferred embodiment, the pulverizing rotary body includes a grinding frustum, a diversion cone, a rotating column, a positioning cylinder, and a cross positioning frame. The top of the grinding frustum is connected to the diversion cone, which guides the falling ore into the pulverizing gap between the grinding frustum and the outer pulverizing cylinder. The top of the diversion cone is provided with the rotating column, and the positioning cylinder is fitted on the rotating column. The positioning cylinder is suspended in the outer pulverizing cylinder by the cross positioning frame.

[0011] According to a preferred embodiment, the cover of the anti-splash feed shell is fastened to the upper port of the upper crushing chamber, and an inclined feed port is provided on the side of the cover; an anti-splash interception chain is also suspended in the inclined feed port.

[0012] According to a preferred embodiment, the screening assembly includes a first screening plate, a second inclined intercepting plate, a mounting frame, a screening vibration unit, and an extended guide trough plate. The first screening plate and the second inclined intercepting plate are both embedded in the mounting frame connected to the support frame. The screening vibration unit is disposed in the assembly gap between the first screening plate, the second inclined intercepting plate, and the mounting frame. The extended guide trough plate is also connected to the inclined lower edge of the second inclined intercepting plate.

[0013] According to a preferred embodiment, the sample collection trough of the sample reduction and collection assembly is supported on one side of the support frame by a support rod, and a discharge port is provided at the bottom of the sample collection trough.

[0014] The beneficial effects of this utility model are:

[0015] The crushing and processing shell, primary crushing component, and secondary crushing component configured in this application can cooperate to construct a two-stage crushing structure, thereby crushing the ore twice through different crushing methods, effectively improving the crushing effect and quality of the ore to obtain small mineral particles that meet the requirements. The secondary crushing component in this application limits the maximum size of its output mineral particles while performing secondary crushing of the ore, ensuring sufficient crushing, increasing the total amount of appropriately sized ore particles produced and sampling efficiency, and achieving preliminary screening of ore particles. The screening component in this application can obtain appropriately sized ore particles through a double-layer screening method while also directionally transferring ore particles, causing the ore particles to form a particle pile in the sample collection tank of the fractionation and collection component, improving the mixing degree of ore particles output from different areas, and improving the uniformity of the distribution of ore particles selected in later sampling within the original ore. By integrating crushing, screening, and fractionation and collection into a single unit, this application completes multiple different continuous processes on a single machine, improving processing efficiency and stability, reducing the risk of sample transfer contamination, ensuring the accuracy and effect of later detection, and facilitating the acquisition of accurate ore testing data. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a preferred mining ore crushing and sampling device proposed in this utility model;

[0017] Figure 2 This is a partial lateral structural diagram of the primary crushing component of a preferred mining ore crushing and sampling device proposed in this utility model;

[0018] Figure 3 This is a plan view of the second inclined interceptor plate of a preferred mining ore crushing and sampling device proposed in this utility model.

[0019] List of reference numerals

[0020] 1: Support frame; 2: Crushing and processing shell; 3: Primary crushing assembly; 4: Secondary crushing assembly; 5: Screening assembly; 6: Sample collection and reduction assembly; 7: Anti-splash feed shell; 8: Waste bin; 21: Upper crushing chamber; 22: Lower crushing chamber; 23: Converging chamber; 31: Crushing roller; 32: Drive gear; 33: Rotating gear; 34: First crushing drive motor; 311: Crushing gear; 41: Crushing outer cylinder; 42: Crushing rotating body; 43: Drive vertical shaft; 44: Second crushing... 411: Drive motor for crushing; 412: Horizontal support rod; 421: Screening hole; 422: Grinding frustum; 423: Diverting cone; 424: Rotating column; 425: Positioning cylinder; 426: Cross positioning frame; 51: First screening plate; 52: Second inclined intercepting plate; 53: Mounting frame; 54: Screening vibration unit; 55: Extended guide trough plate; 61: Sample collection trough; 62: Support rod; 63: Discharge port; 71: Cover; 72: Inclined feed port; 73: Anti-splash intercepting chain. Detailed Implementation

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] The technical solutions provided by this utility model will be described in detail below with reference to the accompanying drawings and through embodiments. It should be noted that the descriptions of these embodiments are intended to aid in understanding this utility model, but do not constitute a limitation thereof. In some examples, because some implementation methods belong to existing or conventional technology, they are not described or are not described in detail.

[0023] The following is a detailed explanation with reference to the accompanying drawings.

[0024] Example 1

[0025] This application provides a mining ore crushing and sampling device, which includes a support frame 1, a crushing and processing shell 2, a primary crushing component 3, a secondary crushing component 4, a screening component 5, a sample reduction and collection component 6, a splash-proof feed shell 7, and a waste bin 8.

[0026] according to Figure 1-3In one specific embodiment, a crushing and processing shell 2 and a screening assembly 5 are suspended on a support frame 1. Within the crushing and processing shell 2, a primary crushing assembly 3 is arranged in an upper layer, and a secondary crushing assembly 4 is arranged in a lower layer. Below the secondary crushing assembly 4, a screening assembly 5 and a sample collection assembly 6 for collecting the screened ore particles are also provided. A splash-proof feed shell 7 for ore input is also provided at the top of the crushing and processing shell 2. The screening assembly 5 is installed at the bottom of the supporting crushing and processing shell 2 and connected to the support frame 1, in a manner capable of screening the ore after two consecutive crushing processes. Below the screening assembly 5, a waste bin 8 is provided for collecting residual material with excessively small particles. The crushing and processing shell 2, primary crushing assembly 3, and secondary crushing assembly 4 configured in this application can cooperate to construct a two-stage crushing structure, thereby effectively improving the crushing effect and quality of the ore through two crushing processes using different crushing methods, to obtain small ore particles that meet the requirements. The secondary crushing component 4 in this application limits the maximum size of the output mineral particles while performing secondary crushing of the ore, ensuring sufficient crushing, increasing the total output of appropriately sized mineral particles and sampling efficiency, and achieving preliminary screening of the mineral particles. The screening component 5 in this application can obtain appropriately sized mineral particles through a double-layer screening method while also directionally transferring the mineral particles, causing them to form a particle pile in the sample collection tank 61 of the reduction and collection component 6. This facilitates the subsequent acquisition of uniformly distributed sample mineral particles from the original ore by operators, improving the characterization effect and accuracy of the mineral particles. By integrating crushing, screening, and reduction and collection into a single unit, this application completes multiple different continuous processes on a single machine, improving processing efficiency and stability, reducing the risk of sample contamination during transfer, ensuring the accuracy and effectiveness of subsequent testing, and facilitating the acquisition of accurate data for ore testing.

[0027] Preferably, the crushing and processing shell 2 includes an upper crushing chamber 21, a lower crushing chamber 22, and a converging chamber 23. Preferably, the upper crushing chamber 21, which is equipped with the primary crushing component 3, is connected to the lower crushing chamber 22 through the converging chamber 23, which can collect and guide the pre-crushed ore. Preferably, a secondary crushing component 4 is provided in the lower crushing chamber 22 to further crush the pre-crushed ore and improve its particle size. Specifically, the converging chamber 23 is a cavity structure with an irregularly shaped cavity. Its upper end can be connected to the rectangular cavity opening of the upper crushing chamber 21, and its lower end can be connected to the circular cavity opening of the lower crushing chamber 22, which can effectively realize the transformation of the cavity cross-sectional shape. The upper crushing chamber 21 and lower crushing chamber 22 provided in this application can cooperate with the primary crushing component 3 and the secondary crushing component 4 respectively to realize two crushing processes and directional conveying of the ore. Thus, while achieving high-quality crushing, it can also achieve the transfer of ore particles without intervention, ensuring the purity of the ore particles and reducing the risk of contamination.

[0028] Preferably, the two parallel crushing rollers 31 of the primary crushing assembly 3 are rotatably mounted laterally in the upper crushing chamber 21. More preferably, crushing teeth 311, which enhance crushing and biting ability and thus improve ore crushing efficiency, are also provided on the surface of the crushing rollers 31. Specifically, the crushing teeth 311 on the two crushing rollers 31 are arranged in a staggered array. Preferably, one end of each of the two crushing rollers 31 penetrates the wall of the upper crushing chamber 21 and connects to a drive tooth 32. Preferably, the two drive teeth 32 engage in drive engagement. More preferably, at least one drive tooth 32 also engages in drive engagement with a rotating tooth 33 located below it. Specifically, as... Figure 1 The two crushing rollers 31 shown have a left-side drive tooth 32 that rotates clockwise under the drive of a right-side drive tooth 32 that rotates counterclockwise. Preferably, the rotating tooth 33 is connected to a first crushing drive motor 34 mounted on the outer wall of the upper crushing chamber 21. Specifically, the two crushing rollers 31 can rotate in opposite directions, so that the crushing teeth 311 approaching each other can apply shearing force to the ore above them, causing the ore to break and driving the broken ore downwards. Preferably, the first crushing drive motor 34 can be a Y200L series / YZR225M series motor commonly used in mining double-roll mills. The two crushing rollers 31 provided in this application can rotate in opposite directions to perform preliminary crushing of large-sized ore, effectively reducing the size of ore particles, thus facilitating further crushing processing. The crushing teeth 311 provided in this application can effectively shear the ore in a staggered arrangement, accelerating the crushing of the ore. This application achieves double-roller drive with a single drive component through an external transmission structure and drive component, which reduces manufacturing costs to a certain extent.

[0029] Preferably, the secondary crushing component 4 includes a crushing outer cylinder 41, a crushing rotating body 42, a transmission vertical shaft 43, and a second crushing drive motor 44. Preferably, the upper opening of the crushing outer cylinder 41 is connected to the lower discharge port of the receiving cavity 23. Preferably, the crushing rotating body 42 is coaxially arranged in the crushing outer cylinder 41. Preferably, the transmission vertical shaft 43, which rotatably penetrates the bottom wall of the crushing outer cylinder 41, is coaxially inserted into the bottom surface of the crushing rotating body 42. Specifically, the surface of the crushing rotating body 42 can be provided with several crushing and extrusion protrusions as needed, thereby accelerating the extrusion and crushing effect. The gap between the crushing rotating body 42 and the crushing outer cylinder 41 can be gradually narrowed downwards, thereby forcing the falling ore to be fully extruded and crushed into small particles, so that particles reaching a set threshold range can be discharged from the screening holes 412 of the crushing outer cylinder 41, realizing the secondary crushing and primary screening of the ore. Preferably, the lower axial end of the transmission vertical shaft 43 is connected to the second crushing drive motor 44 mounted on the bottom surface of the crushing outer cylinder 41. Specifically, the second crushing drive motor 44 is also fitted with an isolation cover that can prevent dust from entering the motor and damaging its internal components. Furthermore, this application is mainly used for small-batch ore crushing for sampling and testing, and there is no issue of long-term operation; therefore, the problem of heat dissipation from the isolation cover does not need to be considered. During short-term operation, the heat accumulation will not exceed the conventional design threshold. Preferably, the second crushing drive motor 44 can be an RY15P series variable frequency speed control motor with IP54 / IP55 protection rating and a water cooling system. The crushing outer cylinder 41 provided in this application can cooperate with the crushing rotating body 42 to define a gradually narrowing crushing gap, so that the ore falling in the gap can be squeezed and broken by the continuously rotating crushing rotating body 42, effectively breaking down the excessively large ore, so that it can fall further in the crushing gap, and the crushed ore particles that reach a certain size can be squeezed and discharged from the screening hole 412, thereby realizing the secondary crushing and screening of the ore.

[0030] Preferably, transverse support rods 411 are circumferentially spaced on the outer side of the outer crushing cylinder 41. More preferably, the radially outer ends of the transverse support rods 411 are connected to the inner wall of the lower crushing chamber 22. Preferably, screening holes 412 for discharging crushed mineral particles are also provided on the bottom cylinder wall of the outer crushing cylinder 41 not obstructed by the second crushing drive motor 44 and on the side cylinder wall below the transverse support rods 411. More preferably, the screening holes 412 can be configured as a hole structure with a downward inclination from the inside to the outside, so that the mineral particles entering the cavity can be discharged more effectively. More preferably, the screening holes 412 are also configured as an expanding hole structure that expands from the inside to the outside, so that the screened mineral particles can pass through the cavity more conveniently and continue to be transported.

[0031] Preferably, the grinding rotating body 42 includes a grinding frustum 421, a diversion cone 422, a rotating column 423, a positioning cylinder 424, and a cross positioning frame 425. Preferably, the grinding frustum 421, which is coaxially mounted in the outer grinding cylinder 41 and forms a grinding gap with the outer grinding cylinder 41, is connected at its top to a diversion cone 422 that guides falling ore into the grinding gap between the grinding frustum 421 and the outer grinding cylinder 41. Preferably, the top of the diversion cone 422 is provided with a rotating column 423 coaxial with it. Preferably, a positioning cylinder 424 that limits its rotation around its axis is fitted on the rotating column 423. More preferably, the positioning cylinder 424 is suspended in the outer grinding cylinder 41 by a cross positioning frame 425 connected to the inner wall of the outer grinding cylinder 41. The diversion cone 422 provided in this application can guide the falling ore, so that the ore is effectively collected in the grinding gap. The rotating column 423, positioning cylinder 424, and cross positioning frame 425 provided in this application can help improve the stability of the grinding table 421 when it rotates, avoid the problem of abnormal shaking when the grinding table 421 squeezes the ore and thus fail to achieve effective crushing, and improve the crushing effect.

[0032] Preferably, the screening assembly 5 includes a first screening plate 51, a second inclined intercepting plate 52, a mounting frame 53, a screening vibration unit 54, and an extended guide trough plate 55. Preferably, both the first screening plate 51 and the second inclined intercepting plate 52 are embedded in the mounting frame 53 connected to the support frame 1. Preferably, the first screening plate 51 is suspended above the second inclined intercepting plate 52. More preferably, the frames of the first screening plate 51 and the second inclined intercepting plate 52 are provided with screens of different mesh sizes, thereby achieving the acquisition of mineral particles within a specific threshold range. Specifically, the mesh of the first screening plate 51 is larger, intercepting excessively large ore particles; the mesh of the second inclined intercepting plate 52 is smaller, filtering out excessively small ore particles to retain mineral particles of appropriate size. More preferably, a screening vibration unit 54, capable of forcing the first screening plate 51 and the second inclined intercepting plate 52 to vibrate, is provided in the assembly gap between the first screening plate 51 and the second inclined intercepting plate 52 and the mounting frame 53. Preferably, the screening vibration unit 54 can be a reciprocating vibrator of model NVG87. Preferably, the lower edge of the inclined plate of the second inclined intercepting plate 52 is also connected to a side plate that passes through the mounting frame 53 to guide the screened mineral particles with a particle size within a certain threshold range into the reduced sample collection assembly 6. The first screening plate 51 and the second inclined intercepting plate 52 provided in this application can reciprocate in the mounting frame 53 under the drive of the screening vibration unit 54, thereby realizing the screening of mineral particles. In this application, the second inclined intercepting plate 52 is inclined so that the screened mineral particles can roll along the inclined surface and move into the cavity of the extended guide plate 55, and then collect in the sample collection tank 61, forming a mineral particle pile in the sample collection tank 61.

[0033] Preferably, the sample collection trough 61 of the sample collection assembly 6 is supported on one side of the support frame 1 by a support rod 62. More preferably, a discharge port 63 is provided at the bottom of the sample collection trough 61. The discharge port 63 provided in this application is located directly below the center of the mineral particle pile, so that when the discharge port 63 is opened, the mineral particles in the central area can be discharged, so that the mineral particles in the central area of ​​the mineral particle pile can be used as samples, thereby ensuring the accuracy and effectiveness of the samples.

[0034] Preferably, the cover 71 of the anti-splash feed housing 7 is fastened to the upper port of the upper crushing chamber 21. More preferably, an inclined feed inlet 72 is provided on the side of the cover 71. Preferably, an anti-splash interception chain 73 is also suspended inside the inclined feed inlet 72. The anti-splash interception chain 73 can effectively prevent crushed and splashed mineral particles from flying out of the inclined feed inlet 72, thereby improving the safety during crushing and processing.

[0035] Preferably, the electrical components such as the first crushing drive motor 34, the second crushing drive motor 44, and the screening vibration unit 54 are all electrically connected to the controller and the power supply. The control method of this application is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is only used to protect the mechanical device and its mechanical structural features. Therefore, this utility model will not explain the control method and circuit connection in detail.

[0036] This utility model is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this utility model. However, regardless of any changes in shape or structure, any technical solution falling within the scope of the claims of this utility model is within the protection scope of this utility model. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A mining ore crushing and sampling device, comprising a support frame (1) supporting a crushing and processing shell (2), characterized in that, The crushing and processing shell (2) is divided into an upper primary crushing component (3) and a lower secondary crushing component (4). Below the secondary crushing component (4) are a screening component (5) and a sample collection component (6) for collecting the screened ore particles. At the top of the crushing and processing shell (2) is a splash-proof feed shell (7) for ore input. The screening component (5) is installed at the bottom of the supporting crushing and processing shell (2) and connected to the supporting frame (1) in a manner that enables screening of ore after two consecutive crushings. A waste bin (8) for collecting residual material is also provided below the screening component (5).

2. The mining ore crushing and sampling equipment as described in claim 1, characterized in that, The crushing and processing shell (2) includes an upper crushing chamber (21), a lower crushing chamber (22), and a converging chamber (23), wherein, The upper crushing chamber (21) equipped with the primary crushing component (3) is connected to the lower crushing chamber (22) through the converging chamber (23) which can collect and guide the ore after preliminary crushing, and the secondary crushing component (4) is provided in the lower crushing chamber (22).

3. The mining ore crushing and sampling equipment as described in claim 2, characterized in that, The two side-by-side crushing rollers (31) of the primary crushing assembly (3) are rotatably mounted laterally in the upper crushing chamber (21), and one end of each of the two crushing rollers (31) penetrates the cavity wall of the upper crushing chamber (21) and is connected to the transmission gear (32). Two of the transmission teeth (32) engage in transmission, and one of the transmission teeth (32) also engages in transmission with a rotating tooth (33), which is connected in transmission to a first crushing drive motor (34) mounted on the outer wall of the upper crushing chamber (21).

4. The mining ore crushing and sampling equipment as described in claim 3, characterized in that, The secondary crushing assembly (4) includes a crushing outer cylinder (41), a crushing rotating body (42), a transmission vertical shaft (43), and a second crushing drive motor (44), wherein, The pulverizing rotating body (42) is provided in the outer pulverizing cylinder (41); The transmission vertical shaft (43) is coaxially inserted on the bottom surface of the crushing rotating body (42), and the lower axial end of the transmission vertical shaft (43) is connected to the second crushing drive motor (44) installed on the bottom surface of the crushing outer cylinder (41).

5. The mining ore crushing and sampling equipment as described in claim 4, characterized in that, The outer side of the crushing outer cylinder (41) is provided with transverse support rods (411) spaced circumferentially, and the radial outer end of the transverse support rods (411) is connected to the inner wall surface of the lower crushing chamber (22). The outer cylinder (41) of the crushing cylinder is also provided with a screening hole (412) for discharging crushed mineral particles.

6. The mining ore crushing and sampling equipment as described in claim 5, characterized in that, The grinding rotating body (42) includes a grinding frustum (421), a flow-dividing cone (422), a rotating column (423), a positioning cylinder (424), and a cross positioning frame (425), wherein, The top of the grinding frustum (421) is connected to a diversion cone (422) that guides the falling ore into the crushing gap between the grinding frustum (421) and the crushing outer cylinder (41). The top of the diversion cone (422) is provided with the rotating column (423), and the positioning cylinder (424) is fitted on the rotating column (423). The positioning cylinder (424) is suspended in the crushing outer cylinder (41) by the cross positioning frame (425).

7. The mining ore crushing and sampling equipment as described in claim 6, characterized in that, The cover (71) of the splash-proof feed shell (7) is fastened to the upper port of the upper crushing chamber (21), and the side of the cover (71) is provided with an inclined feed port (72); A splash-proof interception chain (73) is also installed inside the inclined feed inlet (72).

8. The mining ore crushing and sampling equipment as described in claim 7, characterized in that, The screening component (5) includes a first screening plate (51), a second inclined intercepting plate (52), a mounting frame (53), a screening vibration unit (54), and an extended guide trough plate (55), wherein, The first screening plate (51) and the second inclined intercepting plate (52) are both embedded in the mounting frame (53) connected to the support frame (1). The screening vibration unit (54) is provided in the assembly gap between the first screening plate (51), the second inclined intercepting plate (52) and the mounting frame (53). The extended guide trough plate (55) is also connected to the inclined lower edge of the second inclined intercepting plate (52).

9. The mining ore crushing and sampling equipment as described in claim 8, characterized in that, The sample collection trough (61) of the sample collection assembly (6) is supported on one side of the support frame (1) by a support rod (62), and a discharge port (63) is provided at the bottom of the sample collection trough (61).

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