Coal sample preparation grinding device

Abstract

This invention relates to the field of coal technology, specifically to a coal sample preparation and grinding device. The device includes a main body and a grinding assembly. The grinding assembly includes a vibrating disc, a carrier disc, and a grinding bowl. The vibrating disc is disposed on the main body, the carrier disc on the carrier disc, and the grinding bowl on the side of the carrier disc facing away from the vibrating disc. A first limiting member is provided on one of the sides of the carrier disc facing the vibrating disc and the vibrating disc facing the carrier disc, and a second limiting member is provided on the other side. The carrier disc is movable relative to the vibrating disc in a vertical direction to allow the first and second limiting members to engage or disengage. The engagement of the first and second limiting members restricts the rotation of the carrier disc, while the disengagement allows the carrier disc to rotate relative to the vibrating disc in a vertical direction. This coal sample preparation and grinding device improves the efficiency of loading and unloading the grinding bowl, thereby increasing the sample preparation and grinding efficiency.

Description

Technical Field

[0001] This invention relates to the field of coal technology, and more specifically to a coal sample preparation and grinding device. Background Technology

[0002] In coal testing and analysis, coal samples must be prepared and ground before subsequent testing can be carried out. The sample preparation and grinding machine is the core equipment in the coal sample preparation and grinding process. The sample preparation and grinding machine consists of a main body, a vibrating plate, and a grinding bowl. The grinding bowl is installed on the vibrating plate, and the sample is placed inside the grinding bowl. The grinding bowl vibrates under the drive of the vibrating plate to grind the sample inside the grinding bowl.

[0003] However, in related technologies, the installation position of the mortar on the vibrating plate is fixed, which makes it inconvenient to operate when taking out and putting in the mortar, affecting the efficiency of taking out and putting in, and thus affecting the efficiency of sample preparation and grinding. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a coal sample preparation and grinding apparatus that can improve the efficiency of loading and unloading the feed bowl, thereby improving the sample preparation and grinding efficiency.

[0005] The coal sample grinding apparatus of this invention includes: a main body; and a grinding assembly, the grinding assembly including a vibrating disc, a carrier disc, and a grinding bowl. The vibrating disc is disposed on the main body, the carrier disc is disposed on the carrier disc, and the grinding bowl is disposed on the side of the carrier disc away from the vibrating disc. A first limiting member is provided on one of the sides of the carrier disc facing the vibrating disc and the side of the vibrating disc facing the carrier disc, and a second limiting member is provided on the other side of the sides of the carrier disc facing the vibrating disc and the side of the vibrating disc facing the carrier disc. The carrier disc is movable relative to the vibrating disc in a vertical direction so that the first limiting member and the second limiting member can engage or disengage. The first limiting member and the second limiting member engage to restrict the rotation of the carrier disc, and the first limiting member and the second limiting member disengage so that the carrier disc can rotate relative to the vibrating disc in a vertical direction.

[0006] The coal sample preparation and grinding device of this invention provides a first limiting member on one of the carrier plate and the vibrating plate, and a second limiting member on the other. The carrier plate moves relative to the vibrating plate in the vertical direction to separate the first limiting member from the second limiting member, thereby separating the carrier plate from the vibrating plate. This allows the carrier plate to rotate relative to the vibrating plate in the vertical direction. Since the mortar is mounted on the carrier plate, the rotation of the carrier plate relative to the vibrating plate in the vertical direction can synchronously change the position of the mortar, improving the efficiency of picking up and putting down the mortar, and thus improving the sample preparation and grinding efficiency.

[0007] In some embodiments, the coal sample preparation and grinding apparatus further includes a support assembly, which includes a support column, an elastic element, and a planar bearing. The support column is disposed on the vibrating plate, and an annular groove is provided on the outer peripheral surface of the support column. The elastic element is fitted to the outer periphery of the support column, and at least a portion of the elastic element is located within the annular groove. The planar bearing abuts between the elastic element and the carrier plate, and a portion of the carrier plate is embedded within the annular groove.

[0008] In some embodiments, the elastic member has an extended state and a compressed state. In the extended state, the first limiting member is separated from the second limiting member, and in the compressed state, the first limiting member is engaged with the second limiting member.

[0009] In some embodiments, the coal sample preparation and grinding apparatus further includes a fixing component, which includes a hydraulic cylinder and a pressure rod. The support column has a central hole, the hydraulic cylinder is fitted into the central hole, one end of the pressure rod is connected to the hydraulic rod of the hydraulic cylinder, and the other end of the pressure rod is connected to the mortar.

[0010] In some embodiments, there are multiple material bowls and multiple pressure rods, with each pressure rod corresponding to one of the multiple material bowls.

[0011] In some embodiments, the carrier plate is provided with a mounting groove, and the inner wall surface of the mounting groove is provided with an anti-slip rubber pad, and the material bowl is installed in the mounting groove.

[0012] In some embodiments, the coal sample preparation and grinding device further includes a dust removal component, which includes a dust collection box and a negative pressure fan. The top of the main body is provided with an air suction groove, which is arranged around the carrier plate. The air suction groove is connected to the dust collection box through a pipe, and the dust collection box is connected to the negative pressure fan.

[0013] In some embodiments, the dust collection box includes a box body and a filter plate, the filter plate being detachably disposed within the box body, and the filter plate being located downstream of the air intake groove in the direction of airflow.

[0014] In some embodiments, the dust removal assembly further includes a filter screen disposed at the bottom of the air intake channel.

[0015] In some embodiments, there are multiple suction slots, which are evenly spaced apart in the circumferential direction of the carrier disk. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a coal sample preparation and grinding device according to an embodiment of the present invention.

[0017] Figure 2This is a cross-sectional view of the grinding component of the coal sample preparation and grinding device according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the support assembly of the coal sample preparation and grinding device according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the dust collection box of the coal sample preparation and grinding device according to an embodiment of the present invention.

[0020] Figure label:

[0021] Main body 1, air intake slot 11, Grinding assembly 2, vibratory plate 21, carrier plate 22, mounting groove 221, grinding bowl 23. First limiting member 31, second limiting member 32 Support component 4, support column 41, annular groove 411, center hole 412, Elastic element 42, plane bearing 43, Fixed component 5, hydraulic cylinder 51, pressure rod 52 Dust removal component 6, dust collection box 61, box body 611, filter plate 612, negative pressure fan 62. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] The following is in conjunction with the appendix Figures 1-4 The coal sample preparation and grinding apparatus of this invention will be described in detail.

[0024] The coal sample preparation and grinding device of this invention includes a main body 1 and a grinding assembly 2. The grinding assembly 2 includes a vibrating disc 21, a carrier disc 22, and a grinding bowl 23. The vibrating disc 21 is disposed on the main body 1, the carrier disc 22 is disposed on the carrier disc 22, and the grinding bowl 23 is disposed on the side of the carrier disc 22 away from the vibrating disc 21. A first limiting member 31 is provided on one of the side of the carrier disc 22 facing the vibrating disc 21 and the side of the vibrating disc 21 facing the carrier disc 22, and a second limiting member 32 is provided on the other of the side of the carrier disc 22 facing the vibrating disc 21 and the side of the vibrating disc 21 facing the carrier disc 22. The carrier disc 22 is movable relative to the vibrating disc 21 in the vertical direction so that the first limiting member 31 and the second limiting member 32 can engage or disengage. The first limiting member 31 and the second limiting member 32 engage to restrict the rotation of the carrier disc 22, and the first limiting member 31 and the second limiting member 32 disengage so that the carrier disc 22 can rotate relative to the vibrating disc 21 in the vertical direction.

[0025] The coal sample preparation and grinding apparatus of this invention provides a first limiting member 31 on one of the carrier plate 22 and the vibrating plate 21, and a second limiting member 32 on the other. By moving the carrier plate 22 relative to the vibrating plate 21 in the vertical direction, the first limiting member 31 and the second limiting member 32 are separated, thus separating the carrier plate 22 from the vibrating plate 21. This allows the carrier plate 22 to rotate relative to the vibrating plate 21 in the vertical direction. Since the mortar 23 is mounted on the carrier plate 22, the rotation of the carrier plate 22 relative to the vibrating plate 21 in the vertical direction can synchronously change the position of the mortar 23, improving the efficiency of picking up and putting down the mortar 23, and thus improving the sample preparation and grinding efficiency.

[0026] Specifically, such as Figures 1-3 As shown, the vibratory plate 21 is mounted on the main body 1, the carrier plate 22 is mounted above the vibratory plate 21, and the mortar 23 is mounted above the carrier plate 22. The lower side of the carrier plate 22 is provided with a first limiting member 31, and the upper side of the vibratory plate 21 is provided with a second limiting member 32. When the carrier plate 22 moves downward relative to the vibratory plate 21, the first limiting member 31 and the second limiting member 32 can be engaged to limit the rotation of the carrier plate 22 relative to the vibratory plate 21 in the vertical direction. When the carrier plate 22 moves upward relative to the vibratory plate 21, the first limiting member 31 and the second limiting member 32 can be separated. The carrier plate 22 is separated from the vibratory plate 21, so that the carrier plate 22 can rotate relative to the vibratory plate 21 in the vertical direction, thereby adjusting the position of the mortar 23 above the carrier plate 22 and facilitating the picking up and putting down of the mortar 23.

[0027] Optionally, a first limiting member 31 is provided on the carrier plate 22, and a second limiting member 32 is provided on the vibrating plate 21. For example, the first limiting member 31 is an insert block, and the second limiting member 32 is an insertion hole.

[0028] Optionally, the bottom of the carrier plate 22 is provided with a plurality of insert blocks evenly arranged in the circumferential direction, and the top of the vibrating plate 21 is provided with a plurality of insertion holes that cooperate with the plurality of insert blocks evenly arranged in the circumferential direction.

[0029] In some embodiments, the coal sample preparation and grinding apparatus further includes a support assembly 4, which includes a support column 41, an elastic element 42, and a plane bearing 43. The support column 41 is disposed on the vibrating plate 21, and an annular groove 411 is provided on the outer peripheral surface of the support column 41. The elastic element 42 is fitted on the outer periphery of the support column 41, and at least a portion of the elastic element 42 is located in the annular groove 411. The plane bearing 43 abuts between the elastic element 42 and the carrier plate 22, and a portion of the carrier plate 22 is embedded in the annular groove 411.

[0030] Specifically, such as Figures 1-3As shown, the support column 41 is coaxially arranged with the carrier plate 22 and the vibrating plate 21. The annular groove 411 has an upper wall surface, a lower wall surface and a peripheral wall surface. The elastic element 42 is sleeved on the outer periphery of the peripheral wall surface, and the lower end of the elastic element 42 abuts against the lower wall surface. The planar bearing 43 is sleeved on the outer periphery of the peripheral wall surface and abuts against the upper end of the elastic element 42. The carrier plate 22 is fitted around the outer periphery of the peripheral wall surface, and the bottom of the carrier plate 22 is tightly fitted with the top of the planar bearing 43. The elastic element 42 provides support for the carrier plate 22, thereby allowing the first limiting element 31 on the carrier plate 22 to separate from the second limiting element 32 on the vibrating plate 21, which facilitates the rotation of the carrier plate 22 relative to the vibrating plate 21 in the up and down direction, and realizes the convenient picking and putting of the mortar 23.

[0031] Optionally, the inner ring of the carrier disk 22 is embedded inside the annular groove 411. The inner diameter of the carrier disk 22 is smaller than the outer diameter of the support column 41, and the inner diameter of the carrier disk 22 is larger than the outer diameter of the annular groove 411, so that a part of the carrier disk 22 is located inside the annular groove 411.

[0032] The annular groove 411 of the support column 41 provides a precise installation positioning reference for the carrier plate 22. The inner ring of the carrier plate 22 is embedded in the annular groove 411, realizing the assembly connection between the carrier plate 22 and the support column 41. The inner diameter of the carrier plate 22 is smaller than the outer diameter of the support column 41, which can prevent the carrier plate 22 from falling off the top of the support column 41 and play an axial limiting role. The inner diameter of the carrier plate 22 is larger than the outer diameter of the annular groove 411, providing sufficient room for the carrier plate 22 to rotate around the support column 41, ensuring that the carrier plate 22 can rotate flexibly, which not only ensures the stability of the assembly, but also does not affect the rotation adjustment function.

[0033] Optionally, the elastic element 42 is a spring.

[0034] In some embodiments, the elastic member 42 has an extended state and a compressed state. In the extended state, the first limiting member 31 is separated from the second limiting member 32, and in the compressed state, the first limiting member 31 is engaged with the second limiting member 32.

[0035] Specifically, during the material handling stage, the spring is in a naturally extended state, that is, the elasticity is in the extended state. The plane bearing 43 forms an upward supporting force on the carrier plate 22, causing the insert block at the bottom of the carrier plate 22 to disengage from the insertion hole on the vibrating plate 21. At this time, the operator pushes the carrier plate 22, and the plane bearing 43 can convert the sliding friction between the carrier plate 22 and the spring into rolling friction, greatly reducing the rotational resistance, allowing the carrier plate 22 to rotate flexibly around the support column 41, which facilitates the adjustment of the position of the material bowl 23.

[0036] Before grinding, press the spring down. The spring is compressed and in a compressed state. The carrier plate 22 moves the insert block down synchronously until the insert block is inserted into the corresponding insertion hole. The carrier plate 22 is fixed by the matching engagement of the insert block and the insertion hole, so as to prevent the carrier plate 22 from rotating or shifting during grinding. After grinding, release the carrier plate 22. The spring returns to its elastic state and pushes the carrier plate 22 up. The insert block disengages from the insertion hole again, making it easy for the operator to rotate the carrier plate 22 to take samples.

[0037] In some embodiments, the coal sample preparation and grinding apparatus further includes a fixing component 5, which includes a hydraulic cylinder 51 and a pressure rod 52. The support column 41 has a central hole 412, the hydraulic cylinder 51 is fitted into the central hole 412, one end of the pressure rod 52 is connected to the hydraulic rod 52 of the hydraulic cylinder 51, and the other end of the pressure rod 52 is connected to the mortar 23.

[0038] Specifically, such as Figures 1-3 As shown, the hydraulic cylinder 51 is inserted into the central hole 412, and the hydraulic rod 52 extends out of the hydraulic cylinder 51 and is connected to the pressure rod 52. The hydraulic cylinder 51 drives the hydraulic rod 52 to move up and down, thereby moving the pressure rod 52 up and down, so as to fix and release the material bowl 23.

[0039] After the coal sample is placed in the mortar 23 and mounted on the carrier plate 22, the hydraulic cylinder 51 is activated. The hydraulic rod 52 of the hydraulic cylinder 51 moves downward, causing the pressure rod 52 to move downward until the bottom of the pressure rod 52 is tightly fitted with the top of the mortar 23. This presses and positions the mortar 23 and the carrier plate 22. The carrier plate 22 moves downward synchronously as the pressure rod 52 presses down. The downward movement of the carrier plate 22 causes the plane bearing 43 to move downward. The downward movement of the plane bearing 43 compresses the elastic element 42, causing the insert block to move downward and insert into the insertion hole. This achieves the locking between the carrier plate 22 and the vibrating plate 21, preventing the carrier plate 22 from rotating during the grinding process, and thus achieving the limiting and fixing of the carrier plate 22.

[0040] In some embodiments, there are multiple material bowls 23 and multiple pressure rods 52, with each pressure rod 52 corresponding to one of the multiple material bowls 23.

[0041] Specifically, such as Figures 1-2 As shown, there are multiple material bowls 23, which are evenly spaced around the circumference of the carrier plate 22. Each material bowl 23 corresponds to one of the multiple pressure rods 52, allowing the hydraulic cylinder 51 to simultaneously press and fix the multiple material bowls 23 via the multiple pressure rods 52.

[0042] Optionally, there are four grinding bowls 23, and correspondingly, there are also four pressure rods 52. The arrangement of four grinding bowls 23 can meet the needs of grinding multiple samples at the same time, improve the efficiency of sample preparation, and the uniform distribution of the four grinding bowls 23 along the circumference of the carrier plate 22 can ensure that the carrier plate 22 is subjected to balanced force and rotates more smoothly.

[0043] This invention utilizes a rotating carrier plate 22 mounted on top of the vibratory plate 21, allowing the carrier plate 22 to rotate flexibly around the support column 41. Through the cooperation of a spring, a flat bearing 43, an insert block, and an insertion hole, the adjustable position of the grinding bowl 23 is achieved. During the placement or retrieval of the grinding bowl 23, the spring provides stable support, and the flat bearing 43 reduces rotational resistance. Operators can flexibly rotate the carrier plate 22 according to operational needs, easily avoiding operational dead angles, significantly improving the convenience of placing and disassembling the grinding bowl 23. During grinding operations, the precise cooperation of the insert block and insertion hole quickly locks the position of the carrier plate 22, ensuring the stability of the carrier plate 22 and the grinding bowl 23, preventing displacement of the grinding bowl 23 due to equipment vibration, ensuring the smooth progress of the grinding operation, and effectively improving the overall operational efficiency of coal sample preparation and grinding.

[0044] In some embodiments, such as Figures 1-2 As shown, the carrier plate 22 is provided with an installation groove 221, and the inner wall surface of the installation groove 221 is provided with an anti-slip rubber pad. The material bowl 23 is installed in the installation groove 221.

[0045] Specifically, each material bowl 23 is provided with an anti-slip rubber pad on the inner wall of the mounting groove 221. The elasticity of the rubber pad can buffer and protect the material bowl 23, preventing wear caused by hard contact between the material bowl 23 and the inner wall of the mounting groove 221.

[0046] In some embodiments, the coal sample preparation and grinding apparatus further includes a dust removal component 6, which includes a dust collection box 61 and a negative pressure fan 62. The top of the main body 1 is provided with an air suction groove 11, which is arranged around the carrier plate 22. The air suction groove 11 is connected to the dust collection box 61 through a pipe, and the dust collection box 61 is connected to the negative pressure fan 62.

[0047] Specifically, such as Figure 1 As shown, the top of the main body 1 is provided with suction grooves 11 evenly distributed along the circumference. A dust collection box 61 and a negative pressure fan 62 are installed on the outer shell of the main body 1. The suction grooves 11 are connected to the dust collection box 61 through pipes, and the dust collection box 61 is connected to the air inlet of the negative pressure fan 62.

[0048] Before the coal sample preparation and grinding operation, the operator can use the elastic element 42 in its extended state to support the carrier plate 22, causing the first limiting element 31 and the second limiting element 32 to separate. This facilitates the rotation of the carrier plate 22 around the support column 41, adjusting the mortars 23 on the carrier plate 22 to a position that is easy to pick up and put in. Then, the coal sample to be ground is loaded into each mortar 23. After the sample is loaded, the hydraulic cylinder 51 drives the hydraulic rod 52 to move downward, which in turn moves the pressure rod 52 downward, causing the carrier plate 22 to move downward. The first limiting element 31 and the second limiting element 32 cooperate to limit and fix the carrier plate 22, preventing the carrier plate 22 from rotating during the grinding process. When the main body 1 starts, the negative pressure fan 62 starts synchronously. The negative pressure fan 62 generates negative pressure suction, which is transmitted to the dust collection box 61 through the pipeline, so that the suction groove 11 connected to the dust collection box 61 forms a negative pressure environment. The main body 1 drives the vibrating plate 21 to vibrate, and the vibrating plate 21 drives the material bowl 23 to vibrate synchronously through the carrier plate 22, realizing the grinding operation of the coal sample in the material bowl 23. The coal powder generated during the grinding process is sucked into the pipeline through the suction groove 11 under the action of negative pressure suction, and then transported to the dust collection box 61. After passing through the dust collection box 61, it is discharged to the outside through the negative pressure fan 62. During the grinding process, the pressure rod 52 always presses on the material bowl 23 to keep the carrier plate 22 stable and prevent the material bowl 23 from shifting due to vibration. The dust removal component 6 can capture coal powder at the source and effectively prevent coal powder leakage.

[0049] In some embodiments, the dust collection box 61 includes a box body 611 and a filter plate 612. The filter plate 612 is detachably disposed inside the box body 611 and is located downstream of the suction groove 11 in the direction of airflow.

[0050] Specifically, such as Figure 1 and Figure 4 As shown, the housing 611 is equipped with a detachable filter plate 612. The coal dust passing through the housing 611 is intercepted on the filter plate 612 by the interception action of the filter plate 612, and the clean air after filtering the coal dust is discharged through the negative pressure fan 62.

[0051] Optionally, the filter plate 612 is an activated carbon filter plate 612. After the airflow containing coal powder enters the dust collection box 61, the activated carbon filter plate 612 can efficiently adsorb the fine coal powder particles in the airflow, improve the filtration effect, and ensure the cleanliness of the air discharged from the negative pressure fan 62.

[0052] In some embodiments, the dust removal assembly 6 further includes a filter screen disposed at the bottom of the air intake trough 11.

[0053] Specifically, a filter screen is fixedly installed at the bottom of the air intake trough 11. The filter screen at the bottom of the air intake trough 11 can perform preliminary filtration of the intake airflow, preventing large particles of impurities that have not been completely crushed during the coal sample grinding process from entering the pipeline, avoiding pipeline blockage due to impurity accumulation, and ensuring the stable operation of the dust removal component 6.

[0054] In some embodiments, there are multiple suction slots 11, which are evenly spaced in the circumferential direction of the carrier disk 22.

[0055] Specifically, such as Figure 1 As shown, there are a number of air intake slots 11, and the opening of the air intake slot 11 is a funnel-shaped structure.

[0056] Optionally, there are four suction slots 11, which are evenly arranged around the outer periphery of the vibrating plate 21. This allows for complete coverage of the working area above the main body 1, ensuring that the coal dust generated during grinding is captured without any blind spots, and improving the dust removal effect of the dust removal component 6. By setting the suction slots 11 as funnel-shaped openings, the suction area can be increased, improving the range and efficiency of negative pressure adsorption, making it easier for nearby coal dust to be sucked into the slots.

[0057] This invention forms a complete dust removal assembly 6 by uniformly opening multiple suction grooves 11 along the circumference on the top of the main body 1, and combining them with a negative pressure fan 62 and a dust collection box 61. It can perform active negative pressure dust collection, so that even if the sealing ring is slightly aged or worn due to long-term use, the device can quickly capture the coal dust generated during the grinding process through negative pressure adsorption, blocking the coal dust leakage path from the source, effectively preventing dust, and making it more practical.

[0058] When the coal sample preparation and grinding device of this embodiment of the invention is working, the spring of the support component 4 first provides an upward support force to the carrier plate 22, so that the insert block at the bottom of the carrier plate 22 disengages from the insertion hole of the vibrating plate 21. The operator pushes the carrier plate 22 to rotate around the support column 41, and uses the plane bearing 43 to reduce the rotational resistance. Each material bowl 23 is adjusted to a convenient position for picking up and putting in. After the coal sample to be ground is loaded into the material bowl 23 in sequence, the hydraulic cylinder 51 is started. The hydraulic rod 52 of the hydraulic cylinder 51 controls the pressure rod 52 to move down. The pressure rod 52 presses down on the material bowl 23 and simultaneously presses down on the carrier plate 22. The spring is compressed, and the insert block is inserted into the insertion hole, so that the carrier plate 22 and the material bowl 23 are fixed at the same time.

[0059] During the grinding operation, the main body 1 and the negative pressure fan 62 are started. The main body 1 drives the vibrating plate 21 to vibrate, which is transmitted to the grinding bowl 23 through the carrier plate 22 to achieve coal sample grinding. At the same time, the negative pressure fan 62 generates negative pressure, which causes the funnel-shaped air intake groove 11 at the top of the main body 1 to form an adsorption force. The filter screen at the bottom of the air intake groove 11 intercepts large particles of impurities. The coal powder generated by grinding enters the dust collection box 61 through the air intake groove 11 and the pipeline. The activated carbon filter plate 612 adsorbs fine coal powder, and clean air is discharged through the negative pressure fan 62. The dust collection box 61 realizes centralized collection of coal powder. After grinding is completed, the main body 1 and the negative pressure fan 62 are turned off. The hydraulic cylinder 51 is started to control the pressure rod 52 to rise and reset. The spring elastic reset pushes the carrier plate 22 to move upward, and the insert block disengages from the insertion hole. The operator can easily take out the ground sample in each grinding bowl 23 by rotating the carrier plate 22. In the whole process, the coordinated cooperation of the dustproof component and the support component 4 not only solves the coal powder leakage problem, but also improves the convenience of operation and grinding stability, and efficiently completes the coal sample preparation and grinding operation.

[0060] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coal sample preparation grinding device, characterized by, include: ontology; A grinding assembly includes a vibrating disc, a carrier disc, and a grinding bowl. The vibrating disc is disposed on the main body, the carrier disc is disposed on the carrier disc, and the grinding bowl is disposed on the side of the carrier disc away from the vibrating disc. A first limiting member is provided on one of the sides of the carrier disc facing the vibrating disc and the side of the vibrating disc facing the carrier disc, and a second limiting member is provided on the other side of the sides of the carrier disc facing the vibrating disc. The carrier disc is movable relative to the vibrating disc in a vertical direction to allow the first limiting member to engage or disengage with the second limiting member. The engagement of the first limiting member with the second limiting member restricts the rotation of the carrier disc, and the disengagement of the first limiting member with the second limiting member allows the carrier disc to rotate relative to the vibrating disc in a vertical direction.

2. The coal sample preparation grinder according to claim 1, characterized in that, It also includes a support assembly, which includes a support column, an elastic element, and a plane bearing. The support column is disposed on the vibrating plate, and an annular groove is provided on the outer peripheral surface of the support column. The elastic element is fitted on the outer periphery of the support column, and at least a portion of the elastic element is located in the annular groove. The plane bearing abuts between the elastic element and the carrier plate, and a portion of the carrier plate is embedded in the annular groove.

3. The coal sample preparation grinding device according to claim 2, wherein, The elastic member has an extended state and a compressed state. In the extended state, the first limiting member and the second limiting member are separated. In the compressed state, the first limiting member and the second limiting member are engaged.

4. The coal sample preparation grinding device according to claim 3, characterized in that, It also includes a fixing component, which includes a hydraulic cylinder and a pressure rod. The support column has a central hole, the hydraulic cylinder is fitted into the central hole, one end of the pressure rod is connected to the hydraulic rod of the hydraulic cylinder, and the other end of the pressure rod is connected to the material bowl.

5. The coal sample preparation grinding device according to claim 4, wherein, There are multiple material bowls and multiple pressure rods, with each pressure rod corresponding to one of the multiple material bowls.

6. The coal sample preparation grinding device according to any one of claims 1-5, characterized in that, The carrier plate is provided with an installation groove, and the inner wall of the installation groove is provided with an anti-slip rubber pad. The material bowl is installed in the installation groove.

7. The coal sample preparation grinder according to claim 1, characterized in that, It also includes a dust removal component, which includes a dust collection box and a negative pressure fan. The top of the main body is provided with an air suction groove, which is arranged around the carrier plate. The air suction groove is connected to the dust collection box through a pipe, and the dust collection box is connected to the negative pressure fan.

8. The coal sample preparation grinding device according to claim 7, characterized in that, The dust collection box includes a box body and a filter plate. The filter plate is detachably disposed in the box body and is located downstream of the air intake groove in the direction of airflow.

9. The coal sample preparation grinding device according to claim 7, characterized in that, The dust removal assembly also includes a filter screen, which is located at the bottom of the air intake groove.

10. The coal sample preparation grinding device according to claim 9, wherein, There are multiple air suction slots, which are evenly spaced along the circumference of the carrier disk.

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