Multi-stage crushing and division device for coal sampling

Abstract

The utility model relates to the technical field of coal sampling equipment, and particularly provides a multi-stage crushing and dividing device for coal sampling, which comprises a frame body and a screening unit, wherein the multiple screening units are installed on the frame body, and the screening units are sequentially arranged from top to bottom to form multi-stage screening; the screening unit comprises a hopper, a machine box, a crushing assembly and a separating assembly, the machine box is connected with the hopper, an inner cavity of the hopper communicates with an inner cavity of the machine box, and the machine box is further provided with a first discharging port and a second discharging port; the crushing assembly is arranged in the case; the separating assembly is provided with a first channel and a second channel, the separating assembly is arranged below the third discharging port and used for separating discharging of the third discharging port into two parts, one part is discharged into the first channel, and the other part is discharged into the second channel; and the materials in the first channel are discharged into the hopper below to be continuously shrunk. According to the utility model, the problems of non-uniformity and no representativeness of large-volume coal pile sampling in the prior art are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal sampling equipment, in particular to a multi-stage crushing and shrinking device for coal sampling. Background Art

[0002] In recent years, the coal market has been in short supply and relatively active. Therefore, it is of great significance to monitor and control the quality of coal mines. When sampling coal, it is necessary to be sufficient and representative so that the quality of coal can be objectively and truly reflected.

[0003] At present, there are two commonly used coal truck sampling devices: full-section type and point type. For large-tonnage coal trucks with uneven coal carrying capacity, sampling can only be carried out at a certain point using existing sampling machines; neither the full-section type nor the point type can sample evenly, so the coal samples are not representative, which leads to deviations in coal testing results. Utility Model Content

[0004] In response to the above problems, the present application provides a multi-stage crushing and reducing device for coal sampling, which solves the problem of uneven and unrepresentative sampling of large-volume coal piles in the prior art.

[0005] To achieve the purpose of this application, this application provides the following technical solutions:

[0006] The utility model provides a multi-stage crushing and reducing device for coal sampling, comprising:

[0007] Frame;

[0008] There are multiple screening units installed on the frame, and the screening units are arranged in sequence up and down to form multi-stage screening;

[0009] Wherein, the screening unit comprises:

[0010] hopper;

[0011] A chassis connected to the hopper, wherein the inner cavity of the hopper is in communication with the inner cavity of the chassis, and the chassis further comprises a first discharge port and a second discharge port;

[0012] A crushing assembly, disposed in the chassis, for crushing the feed from the hopper, the crushing assembly also having a third discharge port;

[0013] A partition component comprises a first channel and a second channel. The partition component is arranged below the third discharge port and is used to separate the discharge from the third discharge port into two parts, one part of which is discharged into the first channel and the other part is discharged into the second channel; the material in the first channel is discharged into the hopper below for further reduction.

[0014] According to the multi-stage crushing and shrinking device provided by the utility model, the crushing component includes: a roller component and a driving mechanism, the roller component is rotatably installed in the inner cavity of the chassis, and the driving mechanism is connected to the roller component for driving the roller component to rotate.

[0015] According to the multi-stage crushing and shrinking device provided by the utility model, the roller pressing assembly includes:

[0016] A first roller is rotatably mounted in the inner cavity of the chassis and has a plurality of protrusions on its surface;

[0017] A second roller is rotatably mounted in the inner cavity of the chassis and has a plurality of protrusions on its surface;

[0018] Wherein, the first roller and the second roller rotate in opposite directions under the action of the driving mechanism, and there is a first distance between the first roller and the second roller.

[0019] According to the multi-stage crushing and shrinking device provided by the utility model, the first spacing becomes smaller as the number of stages of the screening units increases.

[0020] According to the multi-stage crushing and shrinking device provided by the utility model, the partition assembly includes: a baffle and a partition plate, the baffles are at least two oppositely arranged to form a flow channel, and the partition plate is arranged between the baffles to divide the flow channel into two parts, one part of which is the first channel and the other part is the second channel.

[0021] According to the multi-stage crushing and shrinking device provided by the utility model, the partition plate is arranged at 1 / 4 of the distance between the baffles.

[0022] According to the multi-stage crushing and shrinking device provided by the utility model, the size of the screening unit decreases step by step as the number of stages of the screening unit increases.

[0023] According to the multi-stage crushing and shrinking device provided by the utility model, the number of stages of the screening unit is eight.

[0024] According to the multi-stage crushing and shrinking device provided by the utility model, the material of the hopper is stainless steel.

[0025] According to the multi-stage crushing and reducing device provided by the utility model, the material of the crushing components is wear-resistant material.

[0026] The utility model provides a multi-stage crushing and shrinking device for coal sampling. Through multiple screening units arranged from top to bottom, large quantities of coal can be evenly mixed and shrunk layer by layer through each screening unit, and sufficient and representative coal samples can be output at the screening unit of the last level, thereby effectively solving the problem of uneven and unrepresentative sampling of large-volume coal piles in the prior art.

[0027] Specifically, through the setting of the screening unit, the coal can be further crushed and reduced; through the setting of the hopper, the coal in the previous screening unit or the coal conveyor belt can be received; through the setting of the crushing component, the coal can be further crushed and evenly mixed; through the setting of the separation component, the crushed coal can be separated, part of the coal can be discharged through the second channel, and part of the coal can enter the next hopper through the first channel for further reduction.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application.

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a multi-stage crushing and shrinking device from a first viewing angle provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of the three-dimensional structure of a multi-stage crushing and shrinking device from a second viewing angle provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of the three-dimensional structure of a crushing assembly and a separation assembly provided in an embodiment of the present application;

[0033] Figure 4 A schematic diagram of the planar structure of a crushing assembly and a separation assembly provided in an embodiment of the present application;

[0034] Figure 5 A schematic diagram of the working process of the eight-stage crushing and reduction device provided in an embodiment of the present application.

[0035] Reference numerals:

[0036] 1. Screening unit; 101. Hopper; 102. Chassis;

[0037] 103, crushing assembly; 1031, first roller; 1032, second roller; 1033, driving mechanism; 1034, first spacing;

[0038] 104, partition assembly; 1041, baffle; 1042, partition plate; 1043, first channel; 1044, second channel;

[0039] 2. Frame;

[0040] 3. Conveyor belt. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of this application, unless otherwise specified, "plurality" means two or more.

[0043] In order to solve the above technical problems, the utility model proposes the following technical solutions and corresponding embodiments.

[0044] Combine the following Figures 1 to 5 The embodiment shown describes the technical solution of the utility model: wherein, Figure 1 and Figure 2 As shown:

[0045] The utility model provides a multi-stage crushing and shrinking device for coal sampling, comprising: a frame 2 and a screening unit 1; wherein the screening unit 1 has a plurality of units, which are installed on the frame 2, and the screening units 1 are arranged in sequence up and down to form a multi-stage screening;

[0046] The screening unit 1 includes: a hopper 101, a chassis 102, a crushing assembly 103 and a partition assembly 104. The chassis 102 is connected to the hopper 101, and the inner cavity of the hopper 101 is connected to the inner cavity of the chassis 102. The chassis 102 also has a first discharge port and a second discharge port; the crushing assembly 103 is arranged in the chassis 102, and is used to crush the feed from the hopper 101. The crushing assembly 103 also has a third discharge port; the partition assembly 104 has a first channel 1043 and a second channel 1044. The partition assembly 104 is arranged below the third discharge port, and is used to separate the discharge from the third discharge port into two parts, one part of which is discharged into the first channel 1043, and the other part is discharged into the second channel 1044; the material in the first channel 1043 is discharged into the hopper 101 below for further reduction.

[0047] In some embodiments, the screening units 1 may have 5 to 10 arranged in sequence up and down. Figure 1 and Figure 2 Only two-stage structural diagrams are given. In actual applications, the number of stages can be designed according to the amount of coal input. The more stages there are, the smaller the sample size will be. The crushing assembly 103 can be a roller crusher or a hammer crusher, as long as it can further crush the coal.

[0048] The embodiment of the utility model provides a multi-stage crushing and reducing device for coal sampling. Through multiple screening units 1 arranged from top to bottom, large quantities of coal can be evenly mixed and reduced layer by layer through each stage of screening unit 1, and sufficient and representative coal samples can be output at the last stage of screening unit 1, thereby effectively solving the problem of uneven and unrepresentative sampling of large-volume coal piles in the prior art.

[0049] Specifically, through the setting of the screening unit 1, the coal can be further crushed and reduced; through the setting of the hopper 101, the coal in the previous screening unit 1 or the coal conveyor belt can be received; through the setting of the crushing component 103, the coal can be further crushed and evenly mixed; through the setting of the separation component 104, the crushed coal can be separated, part of the coal is discharged through the second channel 1044, and part of the coal enters the next hopper 101 through the first channel 1043 for further reduction.

[0050] According to the multi-stage crushing and shrinking device provided in the embodiment of the utility model, Figure 3 and Figure 4 As shown, the crushing assembly 103 includes: a roller assembly and a driving mechanism 1033. The roller assembly is rotatably installed in the inner cavity of the chassis 102. The driving mechanism 1033 is connected to the roller assembly and is used to drive the roller assembly to rotate.

[0051] In some embodiments, the rolling assembly can be rolled toward each other by multiple rollers, or by two rollers arranged opposite to each other; the driving mechanism 1033 can be a combination of a motor and a reduction gear set, or a combination of a motor and a pulley, as long as it can drive the rolling assembly to rotate toward each other.

[0052] According to the multi-stage crushing and shrinking device provided in the embodiment of the utility model, Figure 3 and Figure 4 As shown, the rolling assembly includes: a first roller 1031 and a second roller 1032, wherein the first roller 1031 is rotatably installed in the inner cavity of the chassis 102, and has a plurality of protrusions on its surface; the second roller 1032 is rotatably installed in the inner cavity of the chassis 102, and has a plurality of protrusions on its surface; wherein the first roller 1031 and the second roller 1032 rotate in opposite directions under the action of the driving mechanism 1033, and there is a first spacing 1034 between the first roller 1031 and the second roller 1032.

[0053] In some embodiments, it is preferred that two first rollers 1031 and second rollers 1032 are disposed opposite to each other, and protrusions are disposed on their circular sides. The protrusions may be cones or triangular prisms disposed along the axial direction of the rollers. In this embodiment, a triangular prism structure is preferred, which can fully crush the coal in the axial direction.

[0054] According to the multi-stage crushing and shrinking device provided in the embodiment of the utility model, Figure 3 and Figure 4 As shown, the first spacing 1034 becomes smaller as the number of stages of the screening unit 1 increases.

[0055] In some embodiments, the first spacing 1034 is the distance between the vertices of the roller surfaces that are relatively set. Of course, the first spacing 1034 must be greater than the sum of the heights of the bilateral protrusions; only in this way can the coal flow out after being crushed into the separation component 104; for example, the first spacing 1034 of the first level can be set to 20 cm, the first spacing 1034 of the second level can be set to 18 cm, the first spacing 1034 of the third level can be set to 16 cm, and so on, until the eighth level, the coal particle size required for detection can be crushed.

[0056] According to the multi-stage crushing and shrinking device provided in the embodiment of the utility model, Figure 3 and Figure 4 As shown, the partition assembly 104 includes: a baffle 1041 and a partition plate 1042, the baffle 1041 has at least two oppositely arranged to form a flow channel, and the partition plate 1042 is arranged between the baffles 1041 to divide the flow channel into two parts, one part is the first channel 1043, and the other part is the second channel 1044.

[0057] In some embodiments, there are two baffles 1041 that are arranged opposite to each other with a certain distance between them, and are arranged directly below the crushing assembly 103. In this embodiment, the distance between the baffles 1041 is 40 cm. Of course, the distance between the baffles 1041 gradually decreases with the increase in the number of stages; the partition plate 1042 is parallel to the baffle 1041 and is arranged between the two baffles 1041, thereby dividing the coal discharged from the crushing assembly 103 into two parts, one part enters the first channel 1043 and is discharged into the hopper 101 of the next level, and the other part enters the second channel 1044 and is discharged to the conveyor belt 3.

[0058] According to the multi-stage crushing and shrinking device provided in the embodiment of the utility model, Figure 3 and Figure 4 As shown, the partition plate 1042 is disposed at 1 / 4 of the distance between the baffles 1041 .

[0059] In some embodiments, the partition plate 1042 is set at 1 / 4 of the distance between the baffles 1041, which can achieve a 1 / 4 reduction. Through eight levels of reduction processing, the coal sampling volume and particle size required by the laboratory can be met to the greatest extent.

[0060] According to the multi-stage crushing and shrinking device provided in the embodiment of the utility model, the size of the screening unit 1 decreases step by step as the number of the screening units 1 increases.

[0061] Thus, the coal sample can be screened step by step, and the particle size becomes smaller and smaller. In some embodiments, the size and material of the hopper are shown in the following table:

[0062]

[0063]

[0064] It can be seen from the above table that after the setting of the eight-stage screening unit, the hopper size gradually decreases with the increase of the number of stages. This can not only save the production cost of the equipment, but also achieve the sample volume and particle size required for the experiment.

[0065] According to the multi-stage crushing and reducing device provided by the embodiment of the utility model, the material of the crushing components is wear-resistant material.

[0066] In some embodiments, the wear-resistant material used for the crushing component may preferably be high manganese steel, which has the following advantages:

[0067] 1. High hardness: High manganese steel is harder than ordinary metal materials and can resist the extrusion and friction of materials, thereby maintaining good wear resistance.

[0068] 2. Good toughness: In addition to hardness, the toughness of materials such as high manganese steel is also very important. During the operation of the double-roll crusher, the roller skin needs to be able to withstand extrusion while also being able to bend and deform appropriately to prevent the material from getting stuck inside. High-toughness materials can meet this requirement.

[0069] Figure 5 The schematic diagram of the working process of the eight-stage crushing and reducing device is shown in the following table. Specifically, under different feed amounts, after being processed by the eight-stage screening device, the final output amount is as shown in the following table:

[0070]

[0071]

[0072] The above embodiments are only used to illustrate the technical solution of the present application, but not to limit it. The present application is not limited to the exact structure described above and illustrated in the accompanying drawings, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be deemed to belong to the protection scope of the present application.

Claims

1. A multi-stage crushing and reducing device for coal sampling, characterized in that: include: Frame; There are multiple screening units installed on the frame, and the screening units are arranged in sequence up and down to form multi-stage screening; Wherein, the screening unit comprises: hopper; A chassis connected to the hopper, wherein the inner cavity of the hopper is in communication with the inner cavity of the chassis, and the chassis further comprises a first discharge port and a second discharge port; A crushing assembly, disposed in the chassis, for crushing the feed from the hopper, the crushing assembly also having a third discharge port; A partition component comprises a first channel and a second channel. The partition component is arranged below the third discharge port and is used to separate the discharge from the third discharge port into two parts, one part of which is discharged into the first channel and the other part is discharged into the second channel; the material in the first channel is discharged into the hopper below for further reduction.

2. The multi-stage crushing and shrinking device according to claim 1, characterized in that: The crushing assembly comprises: a roller assembly and a driving mechanism. The roller assembly is rotatably installed in the inner cavity of the chassis. The driving mechanism is connected to the roller assembly and is used to drive the roller assembly to rotate.

3. The multi-stage crushing and shrinking device according to claim 2, characterized in that: The rolling assembly comprises: A first roller is rotatably mounted in the inner cavity of the chassis and has a plurality of protrusions on its surface; A second roller is rotatably mounted in the inner cavity of the chassis and has a plurality of protrusions on its surface; Wherein, the first roller and the second roller rotate in opposite directions under the action of the driving mechanism, and there is a first distance between the first roller and the second roller.

4. The multi-stage crushing and shrinking device according to claim 3 is characterized in that: The first spacing becomes smaller as the number of stages of the screening units increases.

5. The multi-stage crushing and shrinking device according to claim 1, characterized in that: The partition assembly includes: a baffle and a partition plate, wherein at least two baffles are arranged opposite to each other and form a flow channel, and the partition plate is arranged between the baffles to divide the flow channel into two parts, one part of which is the first channel and the other part is the second channel.

6. The multi-stage crushing and shrinking device according to claim 5, characterized in that: The partition plate is arranged at 1 / 4 of the distance between the baffles.

7. The multi-stage crushing and shrinking device according to claim 1, characterized in that: The size of the screening unit decreases gradually as the number of stages of the screening unit increases.

8. The multi-stage crushing and shrinking device according to claim 1, characterized in that: The number of stages of the screening unit is eight.

9. The multi-stage crushing and shrinking device according to claim 1, characterized in that: The material of the hopper is stainless steel.

10. The multi-stage crushing and shrinking device according to claim 1, characterized in that: The material of the crushing component is wear-resistant material.

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