Coal sampling and sample preparation device

Abstract

The utility model belongs to the technical field of sampling and sample preparation, and particularly relates to a coal sampling and sample preparation device which comprises a supporting base, auxiliary mounting frames, a sample preparation box, a sample division mechanism, an auxiliary screening mechanism and a positioning supporting mechanism, the auxiliary mounting frames are oppositely arranged on the outer wall of the top end of the supporting base, and the sample preparation box is arranged between the two sets of auxiliary mounting frames; the sample division mechanism comprises two groups of sample outlet partition grooves fixed in the sample preparation box and two groups of sample collection boxes mounted on the outer wall of the top end of the supporting base through a positioning and supporting mechanism, and the auxiliary screening mechanism is arranged above the sample division mechanism; comprising a positioning mounting frame, a driving motor, a transmission shaft, a limiting cam, a screening net plate, a protective partition plate, a limiting T-shaped block, a limiting T-shaped groove and a supporting spring. The coal sampling and sample preparation device can automatically screen and filter coal samples entering the device, so that the problem of coal particle blockage is avoided, and the coal sampling and sample preparation efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of sampling and preparation technology, specifically relating to a coal sampling and preparation device. Background Technology

[0002] A coal sampling device is a piece of equipment used to collect and prepare coal samples during coal mining, transportation, and storage. It helps users obtain representative samples of coal for quality analysis, compositional testing, and other research. A divider is a commonly used coal sampling device.

[0003] Because existing separators directly pour coal powder into the device for sample preparation, and the coal sample contains some larger particles during the initial crushing process, these larger particles can easily enter the separator and clog the discharge chute, affecting the sample preparation efficiency.

[0004] Patent CN212228529U discloses a divider, which uses a motor, a reciprocating screw and a storage bin to work together to make the process easier, less labor-intensive and more efficient; however, the above device does not address the problem of blockage in the divider's discharge chute, and its overall practical effect is not good. Utility Model Content

[0005] The purpose of this invention is to propose a coal sampling device to solve the above-mentioned problems, so as to improve the problem of blockage of the discharge chute caused by larger coal particles directly entering the separator when preparing coal powder samples.

[0006] Therefore, this utility model provides a coal sampling and preparation device, including a support base, an auxiliary mounting frame, a sample preparation box, a sample reduction mechanism, an auxiliary screening mechanism, and a positioning support mechanism, wherein:

[0007] Two sets of auxiliary mounting brackets are arranged opposite each other on the top outer wall of the support base, and the sample preparation box is arranged between the two sets of auxiliary mounting brackets. The side outer wall of the sample preparation box is fixedly connected to the auxiliary mounting brackets on both sides.

[0008] The sample reduction mechanism includes two sets of sample dispensing slots and two sets of sample collection boxes. The two sets of sample dispensing slots are fixed inside the sample preparation box, and the two sets of sample collection boxes are installed on the top outer wall of the support base through the positioning support mechanism. The top of the sample collection box is an open structure. One set of sample collection boxes is installed with its top opening located below the discharge port of one set of sample dispensing slots, and the other set of sample collection boxes is installed with its top opening located below the discharge port of the other set of sample dispensing slots.

[0009] The auxiliary sieving mechanism is located above the sample reduction mechanism. The auxiliary sieving mechanism includes a positioning mounting frame, a drive motor, a transmission shaft, a limiting cam, a sieving screen, a protective partition, a limiting T-block, a limiting T-slot, and a support spring. The positioning mounting frame is located on the outer side wall of the upper part of the sample preparation box. The drive motor is mounted on the positioning mounting frame, and the transmission shaft is installed inside the sample preparation box. One end of the transmission shaft is connected to the output end of the drive motor, and the other end of the transmission shaft is rotatably mounted to the... The inner side wall of the sample preparation box has multiple limiting cams on the drive shaft. The screening screen is located above the drive shaft. Protective partitions are provided on both outer sides of the screening screen. Limiting T-blocks are located on both outer sides of the protective partitions. Limiting T-grooves are formed on both inner sides of the sample preparation box. The limiting T-blocks and limiting T-grooves correspond one-to-one and slide with each other. The support spring is connected between the top outer wall of the limiting T-block and the upper inner wall of the limiting T-groove.

[0010] Furthermore, in the aforementioned coal sampling device, the positioning support mechanism includes a limiting handle, an abutment strip, and an abutment groove. The limiting handle is located on the front outer wall of the sample collection box, the abutment strip is symmetrically arranged on the bottom outer wall of the sample collection box, and the abutment groove is opened on the top outer wall of the support base. The abutment strip and the abutment groove correspond one-to-one and are engaged with each other.

[0011] Furthermore, in the aforementioned coal sampling device, the middle part of the screening screen is configured as a plate structure, and the remaining parts of the screening screen are configured as a porous structure. The mesh size of the screening screen is designed to be equal to the required mesh size of the coal sample.

[0012] Furthermore, in the aforementioned coal sampling device, an auxiliary feeding box is provided at the top of the sampling box, and the opening area at the top of the auxiliary feeding box is designed to be smaller than the opening area at the bottom.

[0013] The coal sampling device of this utility model has the following advantages and beneficial effects:

[0014] 1. This coal sampling device, through the design of a vibrating screen plate built into the feeding channel, can automatically screen and filter the coal samples entering the device, so that larger coal particles will not enter the sample reduction mechanism. This greatly avoids the problem of the device being blocked by coal particles while ensuring that the mesh size of the reduced sample is qualified. The overall structure design is simple, the practical effect is good, and the efficiency of coal sampling is significantly improved.

[0015] 2. The coal sampling device uses a contact strip and contact groove to limit the position of the sample collection box. Compared with the existing technology where the sample collection box is placed manually without positioning, this design ensures the stable placement of the sample collection box and avoids the phenomenon of sample spillage outside the device due to placement deviation during coal sample preparation. It is also environmentally friendly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for further understanding of the embodiments of this utility model and constitute a part of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the coal sampling device of this utility model, viewed from the front.

[0018] Figure 2 This is a schematic diagram of the structure of the coal sampling device of this utility model, viewed from the back, showing the sample reduction mechanism in the coal sampling device, and the auxiliary feeding box is clearly removed.

[0019] Figure 3 This invention illustrates the auxiliary screening mechanism in the coal sampling device of this utility model.

[0020] Figure 4 for Figure 3 Enlarged diagram of section A in the middle;

[0021] Figure 5 This invention illustrates the positioning support mechanism in the coal sampling device of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Support base; 2. Auxiliary mounting frame; 3. Sample preparation box; 4. Sample reduction mechanism; 41. Sample discharge slot; 42. Sample collection box; 5. Auxiliary sieving mechanism; 51. Positioning mounting frame; 52. Drive motor; 53. Transmission shaft; 54. Limiting cam; 55. Sieving screen; 56. Protective partition; 57. Limiting T-block; 58. Limiting T-slot; 59. Supporting spring; 6. Positioning support mechanism; 61. Limiting handle; 62. Abutment strip; 63. Abutment slot; 7. Auxiliary feeding box. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, the coal sampling device of this utility model includes a support base 1, auxiliary mounting frames 2, a sample preparation box 3, a sample reduction mechanism 4, an auxiliary screening mechanism 5, and a positioning support mechanism 6. Two sets of auxiliary mounting frames 2 are arranged opposite each other on the top outer wall of the support base 1. The sample preparation box 3 is positioned between the two sets of auxiliary mounting frames 2, and the side outer walls of the sample preparation box 3 are fixedly connected to the auxiliary mounting frames 2 on both sides. The sample reduction mechanism 4 includes two sets of sample outlet slots 41 and two sets of sample collection boxes 42. The two sets of sample outlet slots 41 are fixed inside the sample preparation box 3, and the two sets of sample collection boxes 42 are installed on the top outer wall of the support base 1 via the positioning support mechanism 6. The top of the sample collection boxes 42 is an open structure. One set of sample collection boxes 42 is installed with its top opening located below the outlet of one set of sample outlet slots 41, and the other set of sample collection boxes 42 is installed with its top opening located below the outlet of the other set of sample outlet slots 41. The auxiliary sieving mechanism 5 is located above the sample reduction mechanism 4. The auxiliary sieving mechanism 5 includes a positioning mounting frame 51, a drive motor 52, a transmission shaft 53, a limiting cam 54, a sieving screen 55, a protective partition 56, a limiting T-block 57, a limiting T-slot 58, and a support spring 59. The positioning mounting frame 51 is located on the outer side wall of the upper part of the sample preparation box 3. The drive motor 52 is mounted on the positioning mounting frame 51. The transmission shaft 53 is installed inside the sample preparation box 3, with one end connected to the output end of the drive motor 52 and the other end rotatably mounted to the sample preparation box 4. On the inner side wall of sample box 3, multiple limiting cams 54 are provided on the drive shaft 53. The screening screen plate 55 is located above the drive shaft 53. Protective partitions 56 are provided on both outer walls of the screening screen plate 55. Limiting T-blocks 57 are located on both outer walls of the protective partitions 56. Limiting T-grooves 58 are opened on both inner walls of sample box 3. The limiting T-blocks 57 and the limiting T-grooves 58 correspond one-to-one and slide with each other. The support spring 59 is connected between the top outer wall of the limiting T-block 57 and the upper inner wall of the limiting T-grooves 58.

[0026] The positioning support mechanism 6 includes a limiting handle 61, an abutment strip 62, and an abutment groove 63. The limiting handle 61 is located on the front outer wall of the sample collection box 42. The abutment strips 62 are symmetrically arranged on the bottom outer wall of the sample collection box 42. The abutment groove 63 is located on the top outer wall of the support base 1. The abutment strips 62 and the abutment grooves 63 correspond one-to-one and engage with each other. When the sample collection box 42 needs to be installed on the support base 1, simply adjust the sample collection box 42 to a suitable position and push the abutment strip 62 at its bottom into the corresponding abutment groove 63 on the support base 1. When the sample collection box 42 needs to be removed, simply pull the limiting handle 61.

[0027] Preferably, the middle part of the screening screen plate 55 is configured as a plate structure, thereby preventing the limiting cam 54 from damaging the screening screen plate 55 when it abuts against it. The remaining parts of the screening screen plate 55 are configured as a porous structure, thereby ensuring the normal screening of coal powder. Furthermore, the mesh size of the screening screen plate 55 is designed to be equal to the required mesh size of the coal sample.

[0028] Preferably, an auxiliary feeding box 7 is provided at the top of the sample preparation box 3, and the opening area at the top of the auxiliary feeding box 7 is designed to be smaller than the opening area at the bottom; this design prevents coal dust from being scattered to the outside during the operation of the coal sampling device.

[0029] The working principle and process of the coal sampling device of this utility model are as follows:

[0030] Push the abutment strip 62 at the bottom of the sample collection box 42 into the corresponding abutment slot 63 on the support base 1, thereby installing the sample collection box 42 onto the support base 1;

[0031] When the drive motor 52 is started, the transmission shaft 53 is driven to rotate, and the limiting cam 54 rotates accordingly. When the limiting cam 54 contacts the screening screen plate 55 during rotation, the screening screen plate 55 moves upward automatically due to the resistance of the limiting cam 54, which drives the protective partition 56 to move upward. This causes the limiting T-block 57 to slide upward inside the limiting T-groove 58. At this time, the support spring 59 is in a contracted state due to the squeezing action of the limiting T-block 57. When the limiting cam 54 rotates and disengages from the screening screen plate 55, the squeezing action on the support spring 59 is released, and the screening screen plate 55 automatically resets under the action of its elastic restoring force. Thus, during the rotation of the limiting cam 54, the screening screen plate 55 is continuously in a state of up-and-down reciprocating motion, which generates a vibration effect.

[0032] The coal powder to be prepared is poured into the sample preparation box 3 through the auxiliary feed box 7 and laid on the sieve plate 55.

[0033] As described above, the sieve screen 55 vibrates due to its continuous up-and-down reciprocating motion, automatically sieving the coal powder accumulated above it. Coal powder smaller than the mesh size of the sieve screen 55 will automatically fall below the sample preparation box 3, while larger coal particles larger than the mesh size of the sieve screen 55 will be automatically isolated on the sieve screen 55. This completely prevents larger coal particles from entering the sample reduction mechanism 4 and causing blockage.

[0034] When the sieved coal powder falls into the two sets of sample outlet troughs 41, the coal powder is guided by the troughs to automatically fall into the corresponding sample collection box 42 for separate storage.

[0035] Repeat the above process, feeding and preparing samples multiple times until the number of coal samples reaches the required level. After completing the sampling operation for this batch of coal, pull the limit handle 61 to remove the sample collection box 42 from the support base 1.

[0036] It should be noted that the aforementioned drive motor 52 can be operated using existing operating techniques, whether by using a power supply unit or an external wire, both of which are conventional operating techniques and will not be described in detail here.

[0037] In summary, compared with the prior art, the coal sampling device of this utility model has the following advantages and beneficial effects:

[0038] 1. This coal sampling device, through the design of a vibrating screen plate built into the feeding channel, can automatically screen and filter the coal samples entering the device, so that larger coal particles will not enter the sample reduction mechanism. This greatly avoids the problem of the device being blocked by coal particles while ensuring that the mesh size of the reduced sample is qualified. The overall structure design is simple, the practical effect is good, and the efficiency of coal sampling is significantly improved.

[0039] 2. The coal sampling device uses a contact strip and contact groove to limit the position of the sample collection box. Compared with the existing technology where the sample collection box is placed manually without positioning, this design ensures the stable placement of the sample collection box and avoids the phenomenon of sample spillage outside the device due to placement deviation during coal sample preparation. It is also environmentally friendly.

[0040] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement state shown in the accompanying drawings.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A coal sampling device, characterized in that, Includes a support base, auxiliary mounting bracket, sample preparation box, sample reduction mechanism, auxiliary sieving mechanism, and positioning support mechanism, wherein: Two sets of auxiliary mounting brackets are arranged opposite each other on the top outer wall of the support base, and the sample preparation box is arranged between the two sets of auxiliary mounting brackets. The side outer wall of the sample preparation box is fixedly connected to the auxiliary mounting brackets on both sides. The sample reduction mechanism includes two sets of sample dispensing slots and two sets of sample collection boxes. The two sets of sample dispensing slots are fixed inside the sample preparation box, and the two sets of sample collection boxes are installed on the top outer wall of the support base through the positioning support mechanism. The top of the sample collection box is an open structure. One set of sample collection boxes is installed with its top opening located below the discharge port of one set of sample dispensing slots, and the other set of sample collection boxes is installed with its top opening located below the discharge port of the other set of sample dispensing slots. The auxiliary sieving mechanism is located above the sample reduction mechanism. The auxiliary sieving mechanism includes a positioning mounting frame, a drive motor, a transmission shaft, a limiting cam, a sieving screen, a protective partition, a limiting T-block, a limiting T-slot, and a support spring. The positioning mounting frame is located on the outer side wall of the upper part of the sample preparation box. The drive motor is mounted on the positioning mounting frame, and the transmission shaft is installed inside the sample preparation box. One end of the transmission shaft is connected to the output end of the drive motor, and the other end of the transmission shaft is rotatably mounted to the... The inner side wall of the sample preparation box has multiple limiting cams on the drive shaft. The screening screen is located above the drive shaft. Protective partitions are provided on both outer sides of the screening screen. Limiting T-blocks are located on both outer sides of the protective partitions. Limiting T-grooves are formed on both inner sides of the sample preparation box. The limiting T-blocks and limiting T-grooves correspond one-to-one and slide with each other. The support spring is connected between the top outer wall of the limiting T-block and the upper inner wall of the limiting T-groove.

2. The coal sampling device according to claim 1, characterized in that, The positioning support mechanism includes a limiting handle, an abutment strip, and an abutment slot. The limiting handle is located on the front outer wall of the sample collection box. The abutment strips are symmetrically arranged on the bottom outer wall of the sample collection box. The abutment slot is opened on the top outer wall of the support base. The abutment strips and the abutment slots correspond one-to-one and are engaged with each other.

3. The coal sampling device according to claim 1, characterized in that, The middle part of the screening screen is set as a plate structure, and the rest of the screening screen is set as a porous structure. The mesh size of the screening screen is designed to be equal to the required mesh size of the coal sample.

4. The coal sampling apparatus according to any one of claims 1 to 3, characterized in that, An auxiliary feeding box is provided at the top of the sample preparation box, and the opening area of ​​the top of the auxiliary feeding box is designed to be smaller than the opening area of ​​the bottom.

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